]> git.karo-electronics.de Git - linux-beck.git/commitdiff
m68k: merge m68k and m68knommu arch directories
authorGreg Ungerer <gerg@uclinux.org>
Tue, 22 Mar 2011 03:39:27 +0000 (13:39 +1000)
committerGreg Ungerer <gerg@uclinux.org>
Fri, 25 Mar 2011 04:05:13 +0000 (14:05 +1000)
There is a lot of common code that could be shared between the m68k
and m68knommu arch branches. It makes sense to merge the two branches
into a single directory structure so that we can more easily share
that common code.

This is a brute force merge, based on a script from Stephen King
<sfking@fdwdc.com>, which was originally written by Arnd Bergmann
<arnd@arndb.de>.

> The script was inspired by the script Sam Ravnborg used to merge the
> includes from m68knommu. For those files common to both arches but
> differing in content, the m68k version of the file is renamed to
> <file>_mm.<ext> and the m68knommu version of the file is moved into the
> corresponding m68k directory and renamed <file>_no.<ext> and a small
> wrapper file <file>.<ext> is used to select between the two version. Files
> that are common to both but don't differ are removed from the m68knommu
> tree and files and directories that are unique to the m68knommu tree are
> moved to the m68k tree. Finally, the arch/m68knommu tree is removed.
>
> To select between the the versions of the files, the wrapper uses
>
> #ifdef CONFIG_MMU
> #include <file>_mm.<ext>
> #else
> #include <file>_no.<ext>
> #endif

On top of this file merge I have done a simplistic merge of m68k and
m68knommu Kconfig, which primarily attempts to keep existing options and
menus in place. Other than a handful of options being moved it produces
identical .config outputs on m68k and m68knommu targets I tested it on.

With this in place there is now quite a bit of scope for merge cleanups
in future patches.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
170 files changed:
arch/m68k/Kconfig
arch/m68k/Kconfig.debug
arch/m68k/Kconfig.mmu [new file with mode: 0644]
arch/m68k/Kconfig.nommu [moved from arch/m68knommu/Kconfig with 93% similarity]
arch/m68k/Makefile
arch/m68k/Makefile_mm [new file with mode: 0644]
arch/m68k/Makefile_no [moved from arch/m68knommu/Makefile with 92% similarity]
arch/m68k/configs/m5208evb_defconfig [moved from arch/m68knommu/configs/m5208evb_defconfig with 97% similarity]
arch/m68k/configs/m5249evb_defconfig [moved from arch/m68knommu/configs/m5249evb_defconfig with 97% similarity]
arch/m68k/configs/m5272c3_defconfig [moved from arch/m68knommu/configs/m5272c3_defconfig with 96% similarity]
arch/m68k/configs/m5275evb_defconfig [moved from arch/m68knommu/configs/m5275evb_defconfig with 97% similarity]
arch/m68k/configs/m5307c3_defconfig [moved from arch/m68knommu/configs/m5307c3_defconfig with 97% similarity]
arch/m68k/configs/m5407c3_defconfig [moved from arch/m68knommu/configs/m5407c3_defconfig with 97% similarity]
arch/m68k/kernel/Makefile
arch/m68k/kernel/Makefile_mm [new file with mode: 0644]
arch/m68k/kernel/Makefile_no [moved from arch/m68knommu/kernel/Makefile with 100% similarity]
arch/m68k/kernel/asm-offsets.c
arch/m68k/kernel/asm-offsets_mm.c [new file with mode: 0644]
arch/m68k/kernel/asm-offsets_no.c [moved from arch/m68knommu/kernel/asm-offsets.c with 100% similarity]
arch/m68k/kernel/dma.c
arch/m68k/kernel/dma_mm.c [new file with mode: 0644]
arch/m68k/kernel/dma_no.c [moved from arch/m68knommu/kernel/dma.c with 100% similarity]
arch/m68k/kernel/entry.S
arch/m68k/kernel/entry_mm.S [new file with mode: 0644]
arch/m68k/kernel/entry_no.S [moved from arch/m68knommu/kernel/entry.S with 100% similarity]
arch/m68k/kernel/init_task.c [moved from arch/m68knommu/kernel/init_task.c with 100% similarity]
arch/m68k/kernel/irq.c [moved from arch/m68knommu/kernel/irq.c with 100% similarity]
arch/m68k/kernel/m68k_ksyms.c
arch/m68k/kernel/m68k_ksyms_mm.c [new file with mode: 0644]
arch/m68k/kernel/m68k_ksyms_no.c [moved from arch/m68knommu/kernel/m68k_ksyms.c with 100% similarity]
arch/m68k/kernel/module.c
arch/m68k/kernel/module_mm.c [new file with mode: 0644]
arch/m68k/kernel/module_no.c [moved from arch/m68knommu/kernel/module.c with 100% similarity]
arch/m68k/kernel/process.c
arch/m68k/kernel/process_mm.c [new file with mode: 0644]
arch/m68k/kernel/process_no.c [moved from arch/m68knommu/kernel/process.c with 100% similarity]
arch/m68k/kernel/ptrace.c
arch/m68k/kernel/ptrace_mm.c [new file with mode: 0644]
arch/m68k/kernel/ptrace_no.c [moved from arch/m68knommu/kernel/ptrace.c with 100% similarity]
arch/m68k/kernel/setup.c
arch/m68k/kernel/setup_mm.c [new file with mode: 0644]
arch/m68k/kernel/setup_no.c [moved from arch/m68knommu/kernel/setup.c with 100% similarity]
arch/m68k/kernel/signal.c
arch/m68k/kernel/signal_mm.c [new file with mode: 0644]
arch/m68k/kernel/signal_no.c [moved from arch/m68knommu/kernel/signal.c with 100% similarity]
arch/m68k/kernel/sys_m68k.c
arch/m68k/kernel/sys_m68k_mm.c [new file with mode: 0644]
arch/m68k/kernel/sys_m68k_no.c [moved from arch/m68knommu/kernel/sys_m68k.c with 100% similarity]
arch/m68k/kernel/syscalltable.S [moved from arch/m68knommu/kernel/syscalltable.S with 100% similarity]
arch/m68k/kernel/time.c
arch/m68k/kernel/time_mm.c [new file with mode: 0644]
arch/m68k/kernel/time_no.c [moved from arch/m68knommu/kernel/time.c with 100% similarity]
arch/m68k/kernel/traps.c
arch/m68k/kernel/traps_mm.c [new file with mode: 0644]
arch/m68k/kernel/traps_no.c [moved from arch/m68knommu/kernel/traps.c with 100% similarity]
arch/m68k/kernel/vmlinux.lds.S
arch/m68k/kernel/vmlinux.lds_mm.S [new file with mode: 0644]
arch/m68k/kernel/vmlinux.lds_no.S [moved from arch/m68knommu/kernel/vmlinux.lds.S with 100% similarity]
arch/m68k/lib/Makefile
arch/m68k/lib/Makefile_mm [new file with mode: 0644]
arch/m68k/lib/Makefile_no [moved from arch/m68knommu/lib/Makefile with 100% similarity]
arch/m68k/lib/checksum.c
arch/m68k/lib/checksum_mm.c [new file with mode: 0644]
arch/m68k/lib/checksum_no.c [moved from arch/m68knommu/lib/checksum.c with 100% similarity]
arch/m68k/lib/delay.c [moved from arch/m68knommu/lib/delay.c with 100% similarity]
arch/m68k/lib/divsi3.S [moved from arch/m68knommu/lib/divsi3.S with 100% similarity]
arch/m68k/lib/memcpy.c [moved from arch/m68knommu/lib/memcpy.c with 100% similarity]
arch/m68k/lib/memmove.c [moved from arch/m68knommu/lib/memmove.c with 100% similarity]
arch/m68k/lib/memset.c [moved from arch/m68knommu/lib/memset.c with 100% similarity]
arch/m68k/lib/modsi3.S [moved from arch/m68knommu/lib/modsi3.S with 100% similarity]
arch/m68k/lib/muldi3.c
arch/m68k/lib/muldi3_mm.c [moved from arch/m68knommu/lib/ashrdi3.c with 60% similarity]
arch/m68k/lib/muldi3_no.c [moved from arch/m68knommu/lib/muldi3.c with 100% similarity]
arch/m68k/lib/mulsi3.S [moved from arch/m68knommu/lib/mulsi3.S with 100% similarity]
arch/m68k/lib/udivsi3.S [moved from arch/m68knommu/lib/udivsi3.S with 100% similarity]
arch/m68k/lib/umodsi3.S [moved from arch/m68knommu/lib/umodsi3.S with 100% similarity]
arch/m68k/mm/Makefile
arch/m68k/mm/Makefile_mm [new file with mode: 0644]
arch/m68k/mm/Makefile_no [moved from arch/m68knommu/mm/Makefile with 100% similarity]
arch/m68k/mm/init.c
arch/m68k/mm/init_mm.c [new file with mode: 0644]
arch/m68k/mm/init_no.c [moved from arch/m68knommu/mm/init.c with 100% similarity]
arch/m68k/mm/kmap.c
arch/m68k/mm/kmap_mm.c [new file with mode: 0644]
arch/m68k/mm/kmap_no.c [moved from arch/m68knommu/mm/kmap.c with 100% similarity]
arch/m68k/platform/5206/Makefile [moved from arch/m68knommu/platform/5206/Makefile with 100% similarity]
arch/m68k/platform/5206/config.c [moved from arch/m68knommu/platform/5206/config.c with 100% similarity]
arch/m68k/platform/5206/gpio.c [moved from arch/m68knommu/platform/5206/gpio.c with 100% similarity]
arch/m68k/platform/5206e/Makefile [moved from arch/m68knommu/platform/5206e/Makefile with 100% similarity]
arch/m68k/platform/5206e/config.c [moved from arch/m68knommu/platform/5206e/config.c with 100% similarity]
arch/m68k/platform/5206e/gpio.c [moved from arch/m68knommu/platform/5206e/gpio.c with 100% similarity]
arch/m68k/platform/520x/Makefile [moved from arch/m68knommu/platform/520x/Makefile with 100% similarity]
arch/m68k/platform/520x/config.c [moved from arch/m68knommu/platform/520x/config.c with 100% similarity]
arch/m68k/platform/520x/gpio.c [moved from arch/m68knommu/platform/520x/gpio.c with 100% similarity]
arch/m68k/platform/523x/Makefile [moved from arch/m68knommu/platform/523x/Makefile with 100% similarity]
arch/m68k/platform/523x/config.c [moved from arch/m68knommu/platform/523x/config.c with 100% similarity]
arch/m68k/platform/523x/gpio.c [moved from arch/m68knommu/platform/523x/gpio.c with 100% similarity]
arch/m68k/platform/5249/Makefile [moved from arch/m68knommu/platform/5249/Makefile with 100% similarity]
arch/m68k/platform/5249/config.c [moved from arch/m68knommu/platform/5249/config.c with 100% similarity]
arch/m68k/platform/5249/gpio.c [moved from arch/m68knommu/platform/5249/gpio.c with 100% similarity]
arch/m68k/platform/5249/intc2.c [moved from arch/m68knommu/platform/5249/intc2.c with 100% similarity]
arch/m68k/platform/5272/Makefile [moved from arch/m68knommu/platform/5272/Makefile with 100% similarity]
arch/m68k/platform/5272/config.c [moved from arch/m68knommu/platform/5272/config.c with 100% similarity]
arch/m68k/platform/5272/gpio.c [moved from arch/m68knommu/platform/5272/gpio.c with 100% similarity]
arch/m68k/platform/5272/intc.c [moved from arch/m68knommu/platform/5272/intc.c with 100% similarity]
arch/m68k/platform/527x/Makefile [moved from arch/m68knommu/platform/527x/Makefile with 100% similarity]
arch/m68k/platform/527x/config.c [moved from arch/m68knommu/platform/527x/config.c with 100% similarity]
arch/m68k/platform/527x/gpio.c [moved from arch/m68knommu/platform/527x/gpio.c with 100% similarity]
arch/m68k/platform/528x/Makefile [moved from arch/m68knommu/platform/528x/Makefile with 100% similarity]
arch/m68k/platform/528x/config.c [moved from arch/m68knommu/platform/528x/config.c with 100% similarity]
arch/m68k/platform/528x/gpio.c [moved from arch/m68knommu/platform/528x/gpio.c with 100% similarity]
arch/m68k/platform/5307/Makefile [moved from arch/m68knommu/platform/5307/Makefile with 100% similarity]
arch/m68k/platform/5307/config.c [moved from arch/m68knommu/platform/5307/config.c with 100% similarity]
arch/m68k/platform/5307/gpio.c [moved from arch/m68knommu/platform/5307/gpio.c with 100% similarity]
arch/m68k/platform/5307/nettel.c [moved from arch/m68knommu/platform/5307/nettel.c with 100% similarity]
arch/m68k/platform/532x/Makefile [moved from arch/m68knommu/platform/532x/Makefile with 100% similarity]
arch/m68k/platform/532x/config.c [moved from arch/m68knommu/platform/532x/config.c with 100% similarity]
arch/m68k/platform/532x/gpio.c [moved from arch/m68knommu/platform/532x/gpio.c with 100% similarity]
arch/m68k/platform/5407/Makefile [moved from arch/m68knommu/platform/5407/Makefile with 100% similarity]
arch/m68k/platform/5407/config.c [moved from arch/m68knommu/platform/5407/config.c with 100% similarity]
arch/m68k/platform/5407/gpio.c [moved from arch/m68knommu/platform/5407/gpio.c with 100% similarity]
arch/m68k/platform/54xx/Makefile [moved from arch/m68knommu/platform/54xx/Makefile with 100% similarity]
arch/m68k/platform/54xx/config.c [moved from arch/m68knommu/platform/54xx/config.c with 100% similarity]
arch/m68k/platform/54xx/firebee.c [moved from arch/m68knommu/platform/54xx/firebee.c with 100% similarity]
arch/m68k/platform/68328/Makefile [moved from arch/m68knommu/platform/68328/Makefile with 100% similarity]
arch/m68k/platform/68328/bootlogo.h [moved from arch/m68knommu/platform/68328/bootlogo.h with 100% similarity]
arch/m68k/platform/68328/bootlogo.pl [moved from arch/m68knommu/platform/68328/bootlogo.pl with 100% similarity]
arch/m68k/platform/68328/config.c [moved from arch/m68knommu/platform/68328/config.c with 100% similarity]
arch/m68k/platform/68328/entry.S [moved from arch/m68knommu/platform/68328/entry.S with 100% similarity]
arch/m68k/platform/68328/head-de2.S [moved from arch/m68knommu/platform/68328/head-de2.S with 100% similarity]
arch/m68k/platform/68328/head-pilot.S [moved from arch/m68knommu/platform/68328/head-pilot.S with 100% similarity]
arch/m68k/platform/68328/head-ram.S [moved from arch/m68knommu/platform/68328/head-ram.S with 100% similarity]
arch/m68k/platform/68328/head-rom.S [moved from arch/m68knommu/platform/68328/head-rom.S with 100% similarity]
arch/m68k/platform/68328/ints.c [moved from arch/m68knommu/platform/68328/ints.c with 100% similarity]
arch/m68k/platform/68328/romvec.S [moved from arch/m68knommu/platform/68328/romvec.S with 100% similarity]
arch/m68k/platform/68328/timers.c [moved from arch/m68knommu/platform/68328/timers.c with 100% similarity]
arch/m68k/platform/68360/Makefile [moved from arch/m68knommu/platform/68360/Makefile with 100% similarity]
arch/m68k/platform/68360/commproc.c [moved from arch/m68knommu/platform/68360/commproc.c with 100% similarity]
arch/m68k/platform/68360/config.c [moved from arch/m68knommu/platform/68360/config.c with 100% similarity]
arch/m68k/platform/68360/entry.S [moved from arch/m68knommu/platform/68360/entry.S with 100% similarity]
arch/m68k/platform/68360/head-ram.S [moved from arch/m68knommu/platform/68360/head-ram.S with 100% similarity]
arch/m68k/platform/68360/head-rom.S [moved from arch/m68knommu/platform/68360/head-rom.S with 100% similarity]
arch/m68k/platform/68360/ints.c [moved from arch/m68knommu/platform/68360/ints.c with 100% similarity]
arch/m68k/platform/68EZ328/Makefile [moved from arch/m68knommu/platform/68EZ328/Makefile with 100% similarity]
arch/m68k/platform/68EZ328/bootlogo.h [moved from arch/m68knommu/platform/68EZ328/bootlogo.h with 100% similarity]
arch/m68k/platform/68EZ328/config.c [moved from arch/m68knommu/platform/68EZ328/config.c with 100% similarity]
arch/m68k/platform/68VZ328/Makefile [moved from arch/m68knommu/platform/68VZ328/Makefile with 100% similarity]
arch/m68k/platform/68VZ328/config.c [moved from arch/m68knommu/platform/68VZ328/config.c with 100% similarity]
arch/m68k/platform/Makefile [moved from arch/m68knommu/platform/Makefile with 100% similarity]
arch/m68k/platform/coldfire/Makefile [moved from arch/m68knommu/platform/coldfire/Makefile with 100% similarity]
arch/m68k/platform/coldfire/cache.c [moved from arch/m68knommu/platform/coldfire/cache.c with 100% similarity]
arch/m68k/platform/coldfire/clk.c [moved from arch/m68knommu/platform/coldfire/clk.c with 100% similarity]
arch/m68k/platform/coldfire/dma.c [moved from arch/m68knommu/platform/coldfire/dma.c with 100% similarity]
arch/m68k/platform/coldfire/dma_timer.c [moved from arch/m68knommu/platform/coldfire/dma_timer.c with 100% similarity]
arch/m68k/platform/coldfire/entry.S [moved from arch/m68knommu/platform/coldfire/entry.S with 100% similarity]
arch/m68k/platform/coldfire/gpio.c [moved from arch/m68knommu/platform/coldfire/gpio.c with 100% similarity]
arch/m68k/platform/coldfire/head.S [moved from arch/m68knommu/platform/coldfire/head.S with 100% similarity]
arch/m68k/platform/coldfire/intc-2.c [moved from arch/m68knommu/platform/coldfire/intc-2.c with 100% similarity]
arch/m68k/platform/coldfire/intc-simr.c [moved from arch/m68knommu/platform/coldfire/intc-simr.c with 100% similarity]
arch/m68k/platform/coldfire/intc.c [moved from arch/m68knommu/platform/coldfire/intc.c with 100% similarity]
arch/m68k/platform/coldfire/pinmux.c [moved from arch/m68knommu/platform/coldfire/pinmux.c with 100% similarity]
arch/m68k/platform/coldfire/pit.c [moved from arch/m68knommu/platform/coldfire/pit.c with 100% similarity]
arch/m68k/platform/coldfire/sltimers.c [moved from arch/m68knommu/platform/coldfire/sltimers.c with 100% similarity]
arch/m68k/platform/coldfire/timers.c [moved from arch/m68knommu/platform/coldfire/timers.c with 100% similarity]
arch/m68k/platform/coldfire/vectors.c [moved from arch/m68knommu/platform/coldfire/vectors.c with 100% similarity]
arch/m68knommu/Kconfig.debug [deleted file]
arch/m68knommu/defconfig [deleted file]
arch/m68knommu/kernel/.gitignore [deleted file]
arch/m68knommu/lib/ashldi3.c [deleted file]
arch/m68knommu/lib/lshrdi3.c [deleted file]

index 525174d4167953cd7b14a770f2fc6ba0fbd3775a..6e056d3c5d01a3f7edfabcb99ff5f370f6f6be2c 100644 (file)
@@ -1,13 +1,11 @@
 config M68K
        bool
        default y
-       select HAVE_AOUT
        select HAVE_IDE
-       select GENERIC_ATOMIC64
-
-config MMU
-       bool
-       default y
+       select HAVE_AOUT if MMU
+       select GENERIC_ATOMIC64 if MMU
+       select HAVE_GENERIC_HARDIRQS if !MMU
+       select GENERIC_HARDIRQS_NO_DEPRECATED if !MMU
 
 config RWSEM_GENERIC_SPINLOCK
        bool
@@ -34,457 +32,67 @@ config TIME_LOW_RES
        bool
        default y
 
-config GENERIC_IOMAP
-       bool
-       default y
-
-config ARCH_MAY_HAVE_PC_FDC
-       bool
-       depends on BROKEN && (Q40 || SUN3X)
-       default y
-
 config NO_IOPORT
        def_bool y
 
 config NO_DMA
-       def_bool SUN3
+       def_bool (MMU && SUN3) || (!MMU && !COLDFIRE)
 
+config ZONE_DMA
+       bool
+       default y
 config HZ
        int
+       default 1000 if CLEOPATRA
        default 100
 
-config ARCH_USES_GETTIMEOFFSET
-       def_bool y
-
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"
 
-menu "Platform dependent setup"
-
-config EISA
-       bool
-       ---help---
-         The Extended Industry Standard Architecture (EISA) bus was
-         developed as an open alternative to the IBM MicroChannel bus.
-
-         The EISA bus provided some of the features of the IBM MicroChannel
-         bus while maintaining backward compatibility with cards made for
-         the older ISA bus.  The EISA bus saw limited use between 1988 and
-         1995 when it was made obsolete by the PCI bus.
-
-         Say Y here if you are building a kernel for an EISA-based machine.
-
-         Otherwise, say N.
-
-config MCA
-       bool
-       help
-         MicroChannel Architecture is found in some IBM PS/2 machines and
-         laptops.  It is a bus system similar to PCI or ISA. See
-         <file:Documentation/mca.txt> (and especially the web page given
-         there) before attempting to build an MCA bus kernel.
-
-config PCMCIA
-       tristate
-       ---help---
-         Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
-         computer.  These are credit-card size devices such as network cards,
-         modems or hard drives often used with laptops computers.  There are
-         actually two varieties of these cards: the older 16 bit PCMCIA cards
-         and the newer 32 bit CardBus cards.  If you want to use CardBus
-         cards, you need to say Y here and also to "CardBus support" below.
-
-         To use your PC-cards, you will need supporting software from David
-         Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
-         for location).  Please also read the PCMCIA-HOWTO, available from
-         <http://www.tldp.org/docs.html#howto>.
-
-         To compile this driver as modules, choose M here: the
-         modules will be called pcmcia_core and ds.
-
-config AMIGA
-       bool "Amiga support"
-       select MMU_MOTOROLA if MMU
-       help
-         This option enables support for the Amiga series of computers. If
-         you plan to use this kernel on an Amiga, say Y here and browse the
-         material available in <file:Documentation/m68k>; otherwise say N.
-
-config ATARI
-       bool "Atari support"
-       select MMU_MOTOROLA if MMU
-       help
-         This option enables support for the 68000-based Atari series of
-         computers (including the TT, Falcon and Medusa). If you plan to use
-         this kernel on an Atari, say Y here and browse the material
-         available in <file:Documentation/m68k>; otherwise say N.
-
-config MAC
-       bool "Macintosh support"
-       select MMU_MOTOROLA if MMU
-       help
-         This option enables support for the Apple Macintosh series of
-         computers (yes, there is experimental support now, at least for part
-         of the series).
-
-         Say N unless you're willing to code the remaining necessary support.
-         ;)
-
-config NUBUS
-       bool
-       depends on MAC
-       default y
-
-config M68K_L2_CACHE
-       bool
-       depends on MAC
-       default y
-
-config APOLLO
-       bool "Apollo support"
-       select MMU_MOTOROLA if MMU
-       help
-         Say Y here if you want to run Linux on an MC680x0-based Apollo
-         Domain workstation such as the DN3500.
-
-config VME
-       bool "VME (Motorola and BVM) support"
-       select MMU_MOTOROLA if MMU
-       help
-         Say Y here if you want to build a kernel for a 680x0 based VME
-         board.  Boards currently supported include Motorola boards MVME147,
-         MVME162, MVME166, MVME167, MVME172, and MVME177.  BVME4000 and
-         BVME6000 boards from BVM Ltd are also supported.
-
-config MVME147
-       bool "MVME147 support"
-       depends on VME
-       help
-         Say Y to include support for early Motorola VME boards.  This will
-         build a kernel which can run on MVME147 single-board computers.  If
-         you select this option you will have to select the appropriate
-         drivers for SCSI, Ethernet and serial ports later on.
-
-config MVME16x
-       bool "MVME162, 166 and 167 support"
-       depends on VME
-       help
-         Say Y to include support for Motorola VME boards.  This will build a
-         kernel which can run on MVME162, MVME166, MVME167, MVME172, and
-         MVME177 boards.  If you select this option you will have to select
-         the appropriate drivers for SCSI, Ethernet and serial ports later
-         on.
-
-config BVME6000
-       bool "BVME4000 and BVME6000 support"
-       depends on VME
-       help
-         Say Y to include support for VME boards from BVM Ltd.  This will
-         build a kernel which can run on BVME4000 and BVME6000 boards.  If
-         you select this option you will have to select the appropriate
-         drivers for SCSI, Ethernet and serial ports later on.
-
-config HP300
-       bool "HP9000/300 and HP9000/400 support"
-       select MMU_MOTOROLA if MMU
-       help
-         This option enables support for the HP9000/300 and HP9000/400 series
-         of workstations. Support for these machines is still somewhat
-         experimental. If you plan to try to use the kernel on such a machine
-         say Y here.
-         Everybody else says N.
-
-config DIO
-       bool "DIO bus support"
-       depends on HP300
+config MMU
+       bool "MMU-based Paged Memory Management Support"
        default y
        help
-         Say Y here to enable support for the "DIO" expansion bus used in
-         HP300 machines. If you are using such a system you almost certainly
-         want this.
-
-config SUN3X
-       bool "Sun3x support"
-       select MMU_MOTOROLA if MMU
-       select M68030
-       help
-         This option enables support for the Sun 3x series of workstations.
-         Be warned that this support is very experimental.
-         Note that Sun 3x kernels are not compatible with Sun 3 hardware.
-         General Linux information on the Sun 3x series (now discontinued)
-         is at <http://www.angelfire.com/ca2/tech68k/sun3.html>.
-
-         If you don't want to compile a kernel for a Sun 3x, say N.
-
-config Q40
-       bool "Q40/Q60 support"
-       select MMU_MOTOROLA if MMU
-       help
-         The Q40 is a Motorola 68040-based successor to the Sinclair QL
-         manufactured in Germany.  There is an official Q40 home page at
-         <http://www.q40.de/>.  This option enables support for the Q40 and
-         Q60. Select your CPU below.  For 68LC060 don't forget to enable FPU
-         emulation.
-
-config SUN3
-       bool "Sun3 support"
-       depends on !MMU_MOTOROLA
-       select MMU_SUN3 if MMU
-       select M68020
-       help
-         This option enables support for the Sun 3 series of workstations
-         (3/50, 3/60, 3/1xx, 3/2xx systems). Enabling this option requires
-         that all other hardware types must be disabled, as Sun 3 kernels
-         are incompatible with all other m68k targets (including Sun 3x!).
-
-         If you don't want to compile a kernel exclusively for a Sun 3, say N.
-
-config NATFEAT
-       bool "ARAnyM emulator support"
-       depends on ATARI
-       help
-         This option enables support for ARAnyM native features, such as
-         access to a disk image as /dev/hda.
-
-config NFBLOCK
-       tristate "NatFeat block device support"
-       depends on BLOCK && NATFEAT
-       help
-         Say Y to include support for the ARAnyM NatFeat block device
-         which allows direct access to the hard drives without using
-         the hardware emulation.
-
-config NFCON
-       tristate "NatFeat console driver"
-       depends on NATFEAT
-       help
-         Say Y to include support for the ARAnyM NatFeat console driver
-         which allows the console output to be redirected to the stderr
-         output of ARAnyM.
-
-config NFETH
-       tristate "NatFeat Ethernet support"
-       depends on NET_ETHERNET && NATFEAT
-       help
-         Say Y to include support for the ARAnyM NatFeat network device
-         which will emulate a regular ethernet device while presenting an
-         ethertap device to the host system.
-
-comment "Processor type"
-
-config M68020
-       bool "68020 support"
-       help
-         If you anticipate running this kernel on a computer with a MC68020
-         processor, say Y. Otherwise, say N. Note that the 68020 requires a
-         68851 MMU (Memory Management Unit) to run Linux/m68k, except on the
-         Sun 3, which provides its own version.
-
-config M68030
-       bool "68030 support"
-       depends on !MMU_SUN3
-       help
-         If you anticipate running this kernel on a computer with a MC68030
-         processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
-         work, as it does not include an MMU (Memory Management Unit).
-
-config M68040
-       bool "68040 support"
-       depends on !MMU_SUN3
-       help
-         If you anticipate running this kernel on a computer with a MC68LC040
-         or MC68040 processor, say Y. Otherwise, say N. Note that an
-         MC68EC040 will not work, as it does not include an MMU (Memory
-         Management Unit).
-
-config M68060
-       bool "68060 support"
-       depends on !MMU_SUN3
-       help
-         If you anticipate running this kernel on a computer with a MC68060
-         processor, say Y. Otherwise, say N.
-
-config MMU_MOTOROLA
-       bool
-
-config MMU_SUN3
-       bool
-       depends on MMU && !MMU_MOTOROLA
-
-config M68KFPU_EMU
-       bool "Math emulation support (EXPERIMENTAL)"
-       depends on EXPERIMENTAL
-       help
-         At some point in the future, this will cause floating-point math
-         instructions to be emulated by the kernel on machines that lack a
-         floating-point math coprocessor.  Thrill-seekers and chronically
-         sleep-deprived psychotic hacker types can say Y now, everyone else
-         should probably wait a while.
-
-config M68KFPU_EMU_EXTRAPREC
-       bool "Math emulation extra precision"
-       depends on M68KFPU_EMU
-       help
-         The fpu uses normally a few bit more during calculations for
-         correct rounding, the emulator can (often) do the same but this
-         extra calculation can cost quite some time, so you can disable
-         it here. The emulator will then "only" calculate with a 64 bit
-         mantissa and round slightly incorrect, what is more than enough
-         for normal usage.
-
-config M68KFPU_EMU_ONLY
-       bool "Math emulation only kernel"
-       depends on M68KFPU_EMU
-       help
-         This option prevents any floating-point instructions from being
-         compiled into the kernel, thereby the kernel doesn't save any
-         floating point context anymore during task switches, so this
-         kernel will only be usable on machines without a floating-point
-         math coprocessor. This makes the kernel a bit faster as no tests
-         needs to be executed whether a floating-point instruction in the
-         kernel should be executed or not.
-
-config ADVANCED
-       bool "Advanced configuration options"
-       ---help---
-         This gives you access to some advanced options for the CPU. The
-         defaults should be fine for most users, but these options may make
-         it possible for you to improve performance somewhat if you know what
-         you are doing.
-
-         Note that the answer to this question won't directly affect the
-         kernel: saying N will just cause the configurator to skip all
-         the questions about these options.
+         Select if you want MMU-based virtualised addressing space
+         support by paged memory management. If unsure, say 'Y'.
 
-         Most users should say N to this question.
-
-config RMW_INSNS
-       bool "Use read-modify-write instructions"
-       depends on ADVANCED
-       ---help---
-         This allows to use certain instructions that work with indivisible
-         read-modify-write bus cycles. While this is faster than the
-         workaround of disabling interrupts, it can conflict with DMA
-         ( = direct memory access) on many Amiga systems, and it is also said
-         to destabilize other machines. It is very likely that this will
-         cause serious problems on any Amiga or Atari Medusa if set. The only
-         configuration where it should work are 68030-based Ataris, where it
-         apparently improves performance. But you've been warned! Unless you
-         really know what you are doing, say N. Try Y only if you're quite
-         adventurous.
-
-config SINGLE_MEMORY_CHUNK
-       bool "Use one physical chunk of memory only" if ADVANCED && !SUN3
-       default y if SUN3
-       select NEED_MULTIPLE_NODES
-       help
-         Ignore all but the first contiguous chunk of physical memory for VM
-         purposes.  This will save a few bytes kernel size and may speed up
-         some operations.  Say N if not sure.
+menu "Platform dependent setup"
 
-config 060_WRITETHROUGH
-       bool "Use write-through caching for 68060 supervisor accesses"
-       depends on ADVANCED && M68060
-       ---help---
-         The 68060 generally uses copyback caching of recently accessed data.
-         Copyback caching means that memory writes will be held in an on-chip
-         cache and only written back to memory some time later.  Saying Y
-         here will force supervisor (kernel) accesses to use writethrough
-         caching.  Writethrough caching means that data is written to memory
-         straight away, so that cache and memory data always agree.
-         Writethrough caching is less efficient, but is needed for some
-         drivers on 68060 based systems where the 68060 bus snooping signal
-         is hardwired on.  The 53c710 SCSI driver is known to suffer from
-         this problem.
-
-config ARCH_DISCONTIGMEM_ENABLE
-       def_bool !SINGLE_MEMORY_CHUNK
-
-config NODES_SHIFT
-       int
-       default "3"
-       depends on !SINGLE_MEMORY_CHUNK
+if MMU
+source arch/m68k/Kconfig.mmu
+endif
+if !MMU
+source arch/m68k/Kconfig.nommu
+endif
 
 source "mm/Kconfig"
 
 endmenu
 
-menu "General setup"
+menu "Executable file formats"
 
 source "fs/Kconfig.binfmt"
 
-config ZORRO
-       bool "Amiga Zorro (AutoConfig) bus support"
-       depends on AMIGA
-       help
-         This enables support for the Zorro bus in the Amiga. If you have
-         expansion cards in your Amiga that conform to the Amiga
-         AutoConfig(tm) specification, say Y, otherwise N. Note that even
-         expansion cards that do not fit in the Zorro slots but fit in e.g.
-         the CPU slot may fall in this category, so you have to say Y to let
-         Linux use these.
-
-config AMIGA_PCMCIA
-       bool "Amiga 1200/600 PCMCIA support (EXPERIMENTAL)"
-       depends on AMIGA && EXPERIMENTAL
-       help
-         Include support in the kernel for pcmcia on Amiga 1200 and Amiga
-         600. If you intend to use pcmcia cards say Y; otherwise say N.
-
-config STRAM_PROC
-       bool "ST-RAM statistics in /proc"
-       depends on ATARI
-       help
-         Say Y here to report ST-RAM usage statistics in /proc/stram.
-
-config HEARTBEAT
-       bool "Use power LED as a heartbeat" if AMIGA || APOLLO || ATARI || MAC ||Q40
-       default y if !AMIGA && !APOLLO && !ATARI && !MAC && !Q40 && HP300
-       help
-         Use the power-on LED on your machine as a load meter.  The exact
-         behavior is platform-dependent, but normally the flash frequency is
-         a hyperbolic function of the 5-minute load average.
-
-# We have a dedicated heartbeat LED. :-)
-config PROC_HARDWARE
-       bool "/proc/hardware support"
-       help
-         Say Y here to support the /proc/hardware file, which gives you
-         access to information about the machine you're running on,
-         including the model, CPU, MMU, clock speed, BogoMIPS rating,
-         and memory size.
-
-config ISA
-       bool
-       depends on Q40 || AMIGA_PCMCIA
-       default y
-       help
-         Find out whether you have ISA slots on your motherboard.  ISA is the
-         name of a bus system, i.e. the way the CPU talks to the other stuff
-         inside your box.  Other bus systems are PCI, EISA, MicroChannel
-         (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
-         newer boards don't support it.  If you have ISA, say Y, otherwise N.
-
-config GENERIC_ISA_DMA
-       bool
-       depends on Q40 || AMIGA_PCMCIA
-       default y
-
-config ZONE_DMA
-       bool
-       default y
+endmenu
 
-source "drivers/pci/Kconfig"
+if !MMU
+menu "Power management options"
 
-source "drivers/zorro/Kconfig"
+config PM
+        bool "Power Management support"
+        help
+          Support processor power management modes
 
 endmenu
+endif
 
 source "net/Kconfig"
 
 source "drivers/Kconfig"
 
+if MMU
+
 menu "Character devices"
 
 config ATARI_MFPSER
@@ -627,6 +235,8 @@ config SERIAL_CONSOLE
 
 endmenu
 
+endif
+
 source "fs/Kconfig"
 
 source "arch/m68k/Kconfig.debug"
index f53b6d5300e579f49fc20942b89f4385712ea3d4..2bdb1b01115c24f93a21e9e095918a3d44ab89ea 100644 (file)
@@ -2,4 +2,38 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
+if !MMU
+
+config FULLDEBUG
+       bool "Full Symbolic/Source Debugging support"
+       help
+         Enable debugging symbols on kernel build.
+
+config HIGHPROFILE
+       bool "Use fast second timer for profiling"
+       depends on COLDFIRE
+       help
+         Use a fast secondary clock to produce profiling information.
+
+config BOOTPARAM
+       bool 'Compiled-in Kernel Boot Parameter'
+
+config BOOTPARAM_STRING
+       string 'Kernel Boot Parameter'
+       default 'console=ttyS0,19200'
+       depends on BOOTPARAM
+
+config NO_KERNEL_MSG
+       bool "Suppress Kernel BUG Messages"
+       help
+         Do not output any debug BUG messages within the kernel.
+
+config BDM_DISABLE
+       bool "Disable BDM signals"
+       depends on (EXPERIMENTAL && COLDFIRE)
+       help
+         Disable the ColdFire CPU's BDM signals.
+
+endif
+
 endmenu
diff --git a/arch/m68k/Kconfig.mmu b/arch/m68k/Kconfig.mmu
new file mode 100644 (file)
index 0000000..16539b1
--- /dev/null
@@ -0,0 +1,417 @@
+config GENERIC_IOMAP
+       bool
+       default y
+
+config ARCH_MAY_HAVE_PC_FDC
+       bool
+       depends on BROKEN && (Q40 || SUN3X)
+       default y
+
+config ARCH_USES_GETTIMEOFFSET
+       def_bool y
+
+config EISA
+       bool
+       ---help---
+         The Extended Industry Standard Architecture (EISA) bus was
+         developed as an open alternative to the IBM MicroChannel bus.
+
+         The EISA bus provided some of the features of the IBM MicroChannel
+         bus while maintaining backward compatibility with cards made for
+         the older ISA bus.  The EISA bus saw limited use between 1988 and
+         1995 when it was made obsolete by the PCI bus.
+
+         Say Y here if you are building a kernel for an EISA-based machine.
+
+         Otherwise, say N.
+
+config MCA
+       bool
+       help
+         MicroChannel Architecture is found in some IBM PS/2 machines and
+         laptops.  It is a bus system similar to PCI or ISA. See
+         <file:Documentation/mca.txt> (and especially the web page given
+         there) before attempting to build an MCA bus kernel.
+
+config PCMCIA
+       tristate
+       ---help---
+         Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
+         computer.  These are credit-card size devices such as network cards,
+         modems or hard drives often used with laptops computers.  There are
+         actually two varieties of these cards: the older 16 bit PCMCIA cards
+         and the newer 32 bit CardBus cards.  If you want to use CardBus
+         cards, you need to say Y here and also to "CardBus support" below.
+
+         To use your PC-cards, you will need supporting software from David
+         Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
+         for location).  Please also read the PCMCIA-HOWTO, available from
+         <http://www.tldp.org/docs.html#howto>.
+
+         To compile this driver as modules, choose M here: the
+         modules will be called pcmcia_core and ds.
+
+config AMIGA
+       bool "Amiga support"
+       select MMU_MOTOROLA if MMU
+       help
+         This option enables support for the Amiga series of computers. If
+         you plan to use this kernel on an Amiga, say Y here and browse the
+         material available in <file:Documentation/m68k>; otherwise say N.
+
+config ATARI
+       bool "Atari support"
+       select MMU_MOTOROLA if MMU
+       help
+         This option enables support for the 68000-based Atari series of
+         computers (including the TT, Falcon and Medusa). If you plan to use
+         this kernel on an Atari, say Y here and browse the material
+         available in <file:Documentation/m68k>; otherwise say N.
+
+config MAC
+       bool "Macintosh support"
+       select MMU_MOTOROLA if MMU
+       help
+         This option enables support for the Apple Macintosh series of
+         computers (yes, there is experimental support now, at least for part
+         of the series).
+
+         Say N unless you're willing to code the remaining necessary support.
+         ;)
+
+config NUBUS
+       bool
+       depends on MAC
+       default y
+
+config M68K_L2_CACHE
+       bool
+       depends on MAC
+       default y
+
+config APOLLO
+       bool "Apollo support"
+       select MMU_MOTOROLA if MMU
+       help
+         Say Y here if you want to run Linux on an MC680x0-based Apollo
+         Domain workstation such as the DN3500.
+
+config VME
+       bool "VME (Motorola and BVM) support"
+       select MMU_MOTOROLA if MMU
+       help
+         Say Y here if you want to build a kernel for a 680x0 based VME
+         board.  Boards currently supported include Motorola boards MVME147,
+         MVME162, MVME166, MVME167, MVME172, and MVME177.  BVME4000 and
+         BVME6000 boards from BVM Ltd are also supported.
+
+config MVME147
+       bool "MVME147 support"
+       depends on VME
+       help
+         Say Y to include support for early Motorola VME boards.  This will
+         build a kernel which can run on MVME147 single-board computers.  If
+         you select this option you will have to select the appropriate
+         drivers for SCSI, Ethernet and serial ports later on.
+
+config MVME16x
+       bool "MVME162, 166 and 167 support"
+       depends on VME
+       help
+         Say Y to include support for Motorola VME boards.  This will build a
+         kernel which can run on MVME162, MVME166, MVME167, MVME172, and
+         MVME177 boards.  If you select this option you will have to select
+         the appropriate drivers for SCSI, Ethernet and serial ports later
+         on.
+
+config BVME6000
+       bool "BVME4000 and BVME6000 support"
+       depends on VME
+       help
+         Say Y to include support for VME boards from BVM Ltd.  This will
+         build a kernel which can run on BVME4000 and BVME6000 boards.  If
+         you select this option you will have to select the appropriate
+         drivers for SCSI, Ethernet and serial ports later on.
+
+config HP300
+       bool "HP9000/300 and HP9000/400 support"
+       select MMU_MOTOROLA if MMU
+       help
+         This option enables support for the HP9000/300 and HP9000/400 series
+         of workstations. Support for these machines is still somewhat
+         experimental. If you plan to try to use the kernel on such a machine
+         say Y here.
+         Everybody else says N.
+
+config DIO
+       bool "DIO bus support"
+       depends on HP300
+       default y
+       help
+         Say Y here to enable support for the "DIO" expansion bus used in
+         HP300 machines. If you are using such a system you almost certainly
+         want this.
+
+config SUN3X
+       bool "Sun3x support"
+       select MMU_MOTOROLA if MMU
+       select M68030
+       help
+         This option enables support for the Sun 3x series of workstations.
+         Be warned that this support is very experimental.
+         Note that Sun 3x kernels are not compatible with Sun 3 hardware.
+         General Linux information on the Sun 3x series (now discontinued)
+         is at <http://www.angelfire.com/ca2/tech68k/sun3.html>.
+
+         If you don't want to compile a kernel for a Sun 3x, say N.
+
+config Q40
+       bool "Q40/Q60 support"
+       select MMU_MOTOROLA if MMU
+       help
+         The Q40 is a Motorola 68040-based successor to the Sinclair QL
+         manufactured in Germany.  There is an official Q40 home page at
+         <http://www.q40.de/>.  This option enables support for the Q40 and
+         Q60. Select your CPU below.  For 68LC060 don't forget to enable FPU
+         emulation.
+
+config SUN3
+       bool "Sun3 support"
+       depends on !MMU_MOTOROLA
+       select MMU_SUN3 if MMU
+       select M68020
+       help
+         This option enables support for the Sun 3 series of workstations
+         (3/50, 3/60, 3/1xx, 3/2xx systems). Enabling this option requires
+         that all other hardware types must be disabled, as Sun 3 kernels
+         are incompatible with all other m68k targets (including Sun 3x!).
+
+         If you don't want to compile a kernel exclusively for a Sun 3, say N.
+
+config NATFEAT
+       bool "ARAnyM emulator support"
+       depends on ATARI
+       help
+         This option enables support for ARAnyM native features, such as
+         access to a disk image as /dev/hda.
+
+config NFBLOCK
+       tristate "NatFeat block device support"
+       depends on BLOCK && NATFEAT
+       help
+         Say Y to include support for the ARAnyM NatFeat block device
+         which allows direct access to the hard drives without using
+         the hardware emulation.
+
+config NFCON
+       tristate "NatFeat console driver"
+       depends on NATFEAT
+       help
+         Say Y to include support for the ARAnyM NatFeat console driver
+         which allows the console output to be redirected to the stderr
+         output of ARAnyM.
+
+config NFETH
+       tristate "NatFeat Ethernet support"
+       depends on NET_ETHERNET && NATFEAT
+       help
+         Say Y to include support for the ARAnyM NatFeat network device
+         which will emulate a regular ethernet device while presenting an
+         ethertap device to the host system.
+
+comment "Processor type"
+
+config M68020
+       bool "68020 support"
+       help
+         If you anticipate running this kernel on a computer with a MC68020
+         processor, say Y. Otherwise, say N. Note that the 68020 requires a
+         68851 MMU (Memory Management Unit) to run Linux/m68k, except on the
+         Sun 3, which provides its own version.
+
+config M68030
+       bool "68030 support"
+       depends on !MMU_SUN3
+       help
+         If you anticipate running this kernel on a computer with a MC68030
+         processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
+         work, as it does not include an MMU (Memory Management Unit).
+
+config M68040
+       bool "68040 support"
+       depends on !MMU_SUN3
+       help
+         If you anticipate running this kernel on a computer with a MC68LC040
+         or MC68040 processor, say Y. Otherwise, say N. Note that an
+         MC68EC040 will not work, as it does not include an MMU (Memory
+         Management Unit).
+
+config M68060
+       bool "68060 support"
+       depends on !MMU_SUN3
+       help
+         If you anticipate running this kernel on a computer with a MC68060
+         processor, say Y. Otherwise, say N.
+
+config MMU_MOTOROLA
+       bool
+
+config MMU_SUN3
+       bool
+       depends on MMU && !MMU_MOTOROLA
+
+config M68KFPU_EMU
+       bool "Math emulation support (EXPERIMENTAL)"
+       depends on EXPERIMENTAL
+       help
+         At some point in the future, this will cause floating-point math
+         instructions to be emulated by the kernel on machines that lack a
+         floating-point math coprocessor.  Thrill-seekers and chronically
+         sleep-deprived psychotic hacker types can say Y now, everyone else
+         should probably wait a while.
+
+config M68KFPU_EMU_EXTRAPREC
+       bool "Math emulation extra precision"
+       depends on M68KFPU_EMU
+       help
+         The fpu uses normally a few bit more during calculations for
+         correct rounding, the emulator can (often) do the same but this
+         extra calculation can cost quite some time, so you can disable
+         it here. The emulator will then "only" calculate with a 64 bit
+         mantissa and round slightly incorrect, what is more than enough
+         for normal usage.
+
+config M68KFPU_EMU_ONLY
+       bool "Math emulation only kernel"
+       depends on M68KFPU_EMU
+       help
+         This option prevents any floating-point instructions from being
+         compiled into the kernel, thereby the kernel doesn't save any
+         floating point context anymore during task switches, so this
+         kernel will only be usable on machines without a floating-point
+         math coprocessor. This makes the kernel a bit faster as no tests
+         needs to be executed whether a floating-point instruction in the
+         kernel should be executed or not.
+
+config ADVANCED
+       bool "Advanced configuration options"
+       ---help---
+         This gives you access to some advanced options for the CPU. The
+         defaults should be fine for most users, but these options may make
+         it possible for you to improve performance somewhat if you know what
+         you are doing.
+
+         Note that the answer to this question won't directly affect the
+         kernel: saying N will just cause the configurator to skip all
+         the questions about these options.
+
+         Most users should say N to this question.
+
+config RMW_INSNS
+       bool "Use read-modify-write instructions"
+       depends on ADVANCED
+       ---help---
+         This allows to use certain instructions that work with indivisible
+         read-modify-write bus cycles. While this is faster than the
+         workaround of disabling interrupts, it can conflict with DMA
+         ( = direct memory access) on many Amiga systems, and it is also said
+         to destabilize other machines. It is very likely that this will
+         cause serious problems on any Amiga or Atari Medusa if set. The only
+         configuration where it should work are 68030-based Ataris, where it
+         apparently improves performance. But you've been warned! Unless you
+         really know what you are doing, say N. Try Y only if you're quite
+         adventurous.
+
+config SINGLE_MEMORY_CHUNK
+       bool "Use one physical chunk of memory only" if ADVANCED && !SUN3
+       default y if SUN3
+       select NEED_MULTIPLE_NODES
+       help
+         Ignore all but the first contiguous chunk of physical memory for VM
+         purposes.  This will save a few bytes kernel size and may speed up
+         some operations.  Say N if not sure.
+
+config 060_WRITETHROUGH
+       bool "Use write-through caching for 68060 supervisor accesses"
+       depends on ADVANCED && M68060
+       ---help---
+         The 68060 generally uses copyback caching of recently accessed data.
+         Copyback caching means that memory writes will be held in an on-chip
+         cache and only written back to memory some time later.  Saying Y
+         here will force supervisor (kernel) accesses to use writethrough
+         caching.  Writethrough caching means that data is written to memory
+         straight away, so that cache and memory data always agree.
+         Writethrough caching is less efficient, but is needed for some
+         drivers on 68060 based systems where the 68060 bus snooping signal
+         is hardwired on.  The 53c710 SCSI driver is known to suffer from
+         this problem.
+
+config ARCH_DISCONTIGMEM_ENABLE
+       def_bool !SINGLE_MEMORY_CHUNK
+
+config NODES_SHIFT
+       int
+       default "3"
+       depends on !SINGLE_MEMORY_CHUNK
+
+config ZORRO
+       bool "Amiga Zorro (AutoConfig) bus support"
+       depends on AMIGA
+       help
+         This enables support for the Zorro bus in the Amiga. If you have
+         expansion cards in your Amiga that conform to the Amiga
+         AutoConfig(tm) specification, say Y, otherwise N. Note that even
+         expansion cards that do not fit in the Zorro slots but fit in e.g.
+         the CPU slot may fall in this category, so you have to say Y to let
+         Linux use these.
+
+config AMIGA_PCMCIA
+       bool "Amiga 1200/600 PCMCIA support (EXPERIMENTAL)"
+       depends on AMIGA && EXPERIMENTAL
+       help
+         Include support in the kernel for pcmcia on Amiga 1200 and Amiga
+         600. If you intend to use pcmcia cards say Y; otherwise say N.
+
+config STRAM_PROC
+       bool "ST-RAM statistics in /proc"
+       depends on ATARI
+       help
+         Say Y here to report ST-RAM usage statistics in /proc/stram.
+
+config HEARTBEAT
+       bool "Use power LED as a heartbeat" if AMIGA || APOLLO || ATARI || MAC ||Q40
+       default y if !AMIGA && !APOLLO && !ATARI && !MAC && !Q40 && HP300
+       help
+         Use the power-on LED on your machine as a load meter.  The exact
+         behavior is platform-dependent, but normally the flash frequency is
+         a hyperbolic function of the 5-minute load average.
+
+# We have a dedicated heartbeat LED. :-)
+config PROC_HARDWARE
+       bool "/proc/hardware support"
+       help
+         Say Y here to support the /proc/hardware file, which gives you
+         access to information about the machine you're running on,
+         including the model, CPU, MMU, clock speed, BogoMIPS rating,
+         and memory size.
+
+config ISA
+       bool
+       depends on Q40 || AMIGA_PCMCIA
+       default y
+       help
+         Find out whether you have ISA slots on your motherboard.  ISA is the
+         name of a bus system, i.e. the way the CPU talks to the other stuff
+         inside your box.  Other bus systems are PCI, EISA, MicroChannel
+         (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
+         newer boards don't support it.  If you have ISA, say Y, otherwise N.
+
+config GENERIC_ISA_DMA
+       bool
+       depends on Q40 || AMIGA_PCMCIA
+       default y
+
+source "drivers/pci/Kconfig"
+
+source "drivers/zorro/Kconfig"
+
similarity index 93%
rename from arch/m68knommu/Kconfig
rename to arch/m68k/Kconfig.nommu
index b5424cf948e64430ccdd635c17c1fdfa892e42b8..273bccab9517c719fa893d58c5f6631ba9f1f15e 100644 (file)
@@ -1,43 +1,7 @@
-config M68K
-       bool
-       default y
-       select HAVE_IDE
-       select HAVE_GENERIC_HARDIRQS
-       select GENERIC_HARDIRQS_NO_DEPRECATED
-
-config MMU
-       bool
-       default n
-
-config NO_DMA
-       bool
-       depends on !COLDFIRE
-       default y
-
 config FPU
        bool
        default n
 
-config ZONE_DMA
-       bool
-       default y
-
-config RWSEM_GENERIC_SPINLOCK
-       bool
-       default y
-
-config RWSEM_XCHGADD_ALGORITHM
-       bool
-       default n
-
-config ARCH_HAS_ILOG2_U32
-       bool
-       default n
-
-config ARCH_HAS_ILOG2_U64
-       bool
-       default n
-
 config GENERIC_FIND_NEXT_BIT
        bool
        default y
@@ -46,29 +10,14 @@ config GENERIC_GPIO
        bool
        default n
 
-config GENERIC_HWEIGHT
-       bool
-       default y
-
-config GENERIC_CALIBRATE_DELAY
-       bool
-       default y
-
 config GENERIC_CMOS_UPDATE
        bool
        default y
 
-config TIME_LOW_RES
-       bool
-       default y
-
 config GENERIC_CLOCKEVENTS
        bool
        default n
 
-config NO_IOPORT
-       def_bool y
-
 config COLDFIRE_SW_A7
        bool
        default n
@@ -85,12 +34,6 @@ config HAVE_MBAR
 config HAVE_IPSBAR
        bool
 
-source "init/Kconfig"
-
-source "kernel/Kconfig.freezer"
-
-menu "Processor type and features"
-
 choice
        prompt "CPU"
        default M68EZ328
@@ -630,11 +573,6 @@ config 4KSTACKS
          running more threads on a system and also reduces the pressure
          on the VM subsystem for higher order allocations.
 
-config HZ
-       int
-       default 1000 if CLEOPATRA
-       default 100
-
 comment "RAM configuration"
 
 config RAMBASE
@@ -803,10 +741,6 @@ endif
 
 source "kernel/time/Kconfig"
 
-source "mm/Kconfig"
-
-endmenu
-
 config ISA_DMA_API
        bool
        depends on !M5272
@@ -814,31 +748,3 @@ config ISA_DMA_API
 
 source "drivers/pcmcia/Kconfig"
 
-menu "Executable file formats"
-
-source "fs/Kconfig.binfmt"
-
-endmenu
-
-menu "Power management options"
-
-config PM
-       bool "Power Management support"
-       help
-         Support processor power management modes
-
-endmenu
-
-source "net/Kconfig"
-
-source "drivers/Kconfig"
-
-source "fs/Kconfig"
-
-source "arch/m68knommu/Kconfig.debug"
-
-source "security/Kconfig"
-
-source "crypto/Kconfig"
-
-source "lib/Kconfig"
index b793163abc610212618f38a2c1680d6048b41322..be46cadd401781b6796a3888e18085b864080e0b 100644 (file)
@@ -1,123 +1,7 @@
-#
-# m68k/Makefile
-#
-# This file is included by the global makefile so that you can add your own
-# architecture-specific flags and dependencies. Remember to do have actions
-# for "archclean" and "archdep" for cleaning up and making dependencies for
-# this architecture
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 1994 by Hamish Macdonald
-#
-
 KBUILD_DEFCONFIG := multi_defconfig
 
-# override top level makefile
-AS += -m68020
-LDFLAGS := -m m68kelf
-KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/m68k/kernel/module.lds
-ifneq ($(SUBARCH),$(ARCH))
-       ifeq ($(CROSS_COMPILE),)
-               CROSS_COMPILE := $(call cc-cross-prefix, \
-                       m68k-linux-gnu- m68k-linux- m68k-unknown-linux-gnu-)
-       endif
-endif
-
-ifdef CONFIG_SUN3
-LDFLAGS_vmlinux = -N
-endif
-
-CHECKFLAGS += -D__mc68000__
-
-# without -fno-strength-reduce the 53c7xx.c driver fails ;-(
-KBUILD_CFLAGS += -pipe -fno-strength-reduce -ffixed-a2
-
-# enable processor switch if compiled only for a single cpu
-ifndef CONFIG_M68020
-ifndef CONFIG_M68030
-
-ifndef CONFIG_M68060
-KBUILD_CFLAGS += -m68040
-endif
-
-ifndef CONFIG_M68040
-KBUILD_CFLAGS += -m68060
-endif
-
-endif
-endif
-
-ifdef CONFIG_KGDB
-# If configured for kgdb support, include debugging infos and keep the
-# frame pointer
-KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g
-endif
-
-ifndef CONFIG_SUN3
-head-y := arch/m68k/kernel/head.o
+ifdef CONFIG_MMU
+include $(srctree)/arch/m68k/Makefile_mm
 else
-head-y := arch/m68k/kernel/sun3-head.o
+include $(srctree)/arch/m68k/Makefile_no
 endif
-
-core-y                         += arch/m68k/kernel/    arch/m68k/mm/
-libs-y                         += arch/m68k/lib/
-
-core-$(CONFIG_Q40)             += arch/m68k/q40/
-core-$(CONFIG_AMIGA)           += arch/m68k/amiga/
-core-$(CONFIG_ATARI)           += arch/m68k/atari/
-core-$(CONFIG_MAC)             += arch/m68k/mac/
-core-$(CONFIG_HP300)           += arch/m68k/hp300/
-core-$(CONFIG_APOLLO)          += arch/m68k/apollo/
-core-$(CONFIG_MVME147)         += arch/m68k/mvme147/
-core-$(CONFIG_MVME16x)         += arch/m68k/mvme16x/
-core-$(CONFIG_BVME6000)                += arch/m68k/bvme6000/
-core-$(CONFIG_SUN3X)           += arch/m68k/sun3x/     arch/m68k/sun3/
-core-$(CONFIG_SUN3)            += arch/m68k/sun3/      arch/m68k/sun3/prom/
-core-$(CONFIG_NATFEAT)         += arch/m68k/emu/
-core-$(CONFIG_M68040)          += arch/m68k/fpsp040/
-core-$(CONFIG_M68060)          += arch/m68k/ifpsp060/
-core-$(CONFIG_M68KFPU_EMU)     += arch/m68k/math-emu/
-
-all:   zImage
-
-lilo:  vmlinux
-       if [ -f $(INSTALL_PATH)/vmlinux ]; then mv -f $(INSTALL_PATH)/vmlinux $(INSTALL_PATH)/vmlinux.old; fi
-       if [ -f $(INSTALL_PATH)/System.map ]; then mv -f $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
-       cat vmlinux > $(INSTALL_PATH)/vmlinux
-       cp System.map $(INSTALL_PATH)/System.map
-       if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
-
-zImage compressed: vmlinux.gz
-
-vmlinux.gz: vmlinux
-
-ifndef CONFIG_KGDB
-       cp vmlinux vmlinux.tmp
-       $(STRIP) vmlinux.tmp
-       gzip -9c vmlinux.tmp >vmlinux.gz
-       rm vmlinux.tmp
-else
-       gzip -9c vmlinux >vmlinux.gz
-endif
-
-bzImage: vmlinux.bz2
-
-vmlinux.bz2: vmlinux
-
-ifndef CONFIG_KGDB
-       cp vmlinux vmlinux.tmp
-       $(STRIP) vmlinux.tmp
-       bzip2 -1c vmlinux.tmp >vmlinux.bz2
-       rm vmlinux.tmp
-else
-       bzip2 -1c vmlinux >vmlinux.bz2
-endif
-
-archclean:
-       rm -f vmlinux.gz vmlinux.bz2
-
-install:
-       sh $(srctree)/arch/m68k/install.sh $(KERNELRELEASE) vmlinux.gz System.map "$(INSTALL_PATH)"
diff --git a/arch/m68k/Makefile_mm b/arch/m68k/Makefile_mm
new file mode 100644 (file)
index 0000000..d449b6d
--- /dev/null
@@ -0,0 +1,121 @@
+#
+# m68k/Makefile
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies. Remember to do have actions
+# for "archclean" and "archdep" for cleaning up and making dependencies for
+# this architecture
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 1994 by Hamish Macdonald
+#
+
+# override top level makefile
+AS += -m68020
+LDFLAGS := -m m68kelf
+KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/m68k/kernel/module.lds
+ifneq ($(SUBARCH),$(ARCH))
+       ifeq ($(CROSS_COMPILE),)
+               CROSS_COMPILE := $(call cc-cross-prefix, \
+                       m68k-linux-gnu- m68k-linux- m68k-unknown-linux-gnu-)
+       endif
+endif
+
+ifdef CONFIG_SUN3
+LDFLAGS_vmlinux = -N
+endif
+
+CHECKFLAGS += -D__mc68000__
+
+# without -fno-strength-reduce the 53c7xx.c driver fails ;-(
+KBUILD_CFLAGS += -pipe -fno-strength-reduce -ffixed-a2
+
+# enable processor switch if compiled only for a single cpu
+ifndef CONFIG_M68020
+ifndef CONFIG_M68030
+
+ifndef CONFIG_M68060
+KBUILD_CFLAGS += -m68040
+endif
+
+ifndef CONFIG_M68040
+KBUILD_CFLAGS += -m68060
+endif
+
+endif
+endif
+
+ifdef CONFIG_KGDB
+# If configured for kgdb support, include debugging infos and keep the
+# frame pointer
+KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g
+endif
+
+ifndef CONFIG_SUN3
+head-y := arch/m68k/kernel/head.o
+else
+head-y := arch/m68k/kernel/sun3-head.o
+endif
+
+core-y                         += arch/m68k/kernel/    arch/m68k/mm/
+libs-y                         += arch/m68k/lib/
+
+core-$(CONFIG_Q40)             += arch/m68k/q40/
+core-$(CONFIG_AMIGA)           += arch/m68k/amiga/
+core-$(CONFIG_ATARI)           += arch/m68k/atari/
+core-$(CONFIG_MAC)             += arch/m68k/mac/
+core-$(CONFIG_HP300)           += arch/m68k/hp300/
+core-$(CONFIG_APOLLO)          += arch/m68k/apollo/
+core-$(CONFIG_MVME147)         += arch/m68k/mvme147/
+core-$(CONFIG_MVME16x)         += arch/m68k/mvme16x/
+core-$(CONFIG_BVME6000)                += arch/m68k/bvme6000/
+core-$(CONFIG_SUN3X)           += arch/m68k/sun3x/     arch/m68k/sun3/
+core-$(CONFIG_SUN3)            += arch/m68k/sun3/      arch/m68k/sun3/prom/
+core-$(CONFIG_NATFEAT)         += arch/m68k/emu/
+core-$(CONFIG_M68040)          += arch/m68k/fpsp040/
+core-$(CONFIG_M68060)          += arch/m68k/ifpsp060/
+core-$(CONFIG_M68KFPU_EMU)     += arch/m68k/math-emu/
+
+all:   zImage
+
+lilo:  vmlinux
+       if [ -f $(INSTALL_PATH)/vmlinux ]; then mv -f $(INSTALL_PATH)/vmlinux $(INSTALL_PATH)/vmlinux.old; fi
+       if [ -f $(INSTALL_PATH)/System.map ]; then mv -f $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
+       cat vmlinux > $(INSTALL_PATH)/vmlinux
+       cp System.map $(INSTALL_PATH)/System.map
+       if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
+
+zImage compressed: vmlinux.gz
+
+vmlinux.gz: vmlinux
+
+ifndef CONFIG_KGDB
+       cp vmlinux vmlinux.tmp
+       $(STRIP) vmlinux.tmp
+       gzip -9c vmlinux.tmp >vmlinux.gz
+       rm vmlinux.tmp
+else
+       gzip -9c vmlinux >vmlinux.gz
+endif
+
+bzImage: vmlinux.bz2
+
+vmlinux.bz2: vmlinux
+
+ifndef CONFIG_KGDB
+       cp vmlinux vmlinux.tmp
+       $(STRIP) vmlinux.tmp
+       bzip2 -1c vmlinux.tmp >vmlinux.bz2
+       rm vmlinux.tmp
+else
+       bzip2 -1c vmlinux >vmlinux.bz2
+endif
+
+archclean:
+       rm -f vmlinux.gz vmlinux.bz2
+
+install:
+       sh $(srctree)/arch/m68k/install.sh $(KERNELRELEASE) vmlinux.gz System.map "$(INSTALL_PATH)"
similarity index 92%
rename from arch/m68knommu/Makefile
rename to arch/m68k/Makefile_no
index 589613fed31d9535ee432541e9b73490c5436c79..81652ab893e130d2c13a6e18646421fa776dfb45 100644 (file)
@@ -1,5 +1,5 @@
 #
-# arch/m68knommu/Makefile
+# arch/m68k/Makefile
 #
 # This file is subject to the terms and conditions of the GNU General Public
 # License.  See the file "COPYING" in the main directory of this archive
@@ -8,8 +8,6 @@
 # (C) Copyright 2002, Greg Ungerer <gerg@snapgear.com>
 #
 
-KBUILD_DEFCONFIG := m5208evb_defconfig
-
 platform-$(CONFIG_M68328)      := 68328
 platform-$(CONFIG_M68EZ328)    := 68EZ328
 platform-$(CONFIG_M68VZ328)    := 68VZ328
@@ -82,7 +80,7 @@ cpuclass-$(CONFIG_M68360)     := 68360
 CPUCLASS := $(cpuclass-y)
 
 ifneq ($(CPUCLASS),$(PLATFORM))
-CLASSDIR := arch/m68knommu/platform/$(cpuclass-y)/
+CLASSDIR := arch/m68k/platform/$(cpuclass-y)/
 endif
 
 export PLATFORM BOARD MODEL CPUCLASS
@@ -114,13 +112,13 @@ KBUILD_CFLAGS += $(cflags-y)
 KBUILD_CFLAGS += -D__linux__
 KBUILD_CFLAGS += -DUTS_SYSNAME=\"uClinux\"
 
-head-y := arch/m68knommu/platform/$(cpuclass-y)/head.o
+head-y := arch/m68k/platform/$(cpuclass-y)/head.o
 
-core-y += arch/m68knommu/kernel/ \
-          arch/m68knommu/mm/ \
+core-y += arch/m68k/kernel/ \
+          arch/m68k/mm/ \
           $(CLASSDIR) \
-          arch/m68knommu/platform/$(PLATFORM)/
-libs-y += arch/m68knommu/lib/
+          arch/m68k/platform/$(PLATFORM)/
+libs-y += arch/m68k/lib/
 
 archclean:
 
similarity index 97%
rename from arch/m68knommu/configs/m5208evb_defconfig
rename to arch/m68k/configs/m5208evb_defconfig
index 2f5655c577affcd1d486b5b7cbd1e5f096b5780e..c1616824e201f0e8e53605226dae70cf4feb692a 100644 (file)
@@ -1,3 +1,4 @@
+# CONFIG_MMU is not set
 CONFIG_EXPERIMENTAL=y
 CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
@@ -37,6 +38,7 @@ CONFIG_INET=y
 # CONFIG_INET_LRO is not set
 # CONFIG_INET_DIAG is not set
 # CONFIG_IPV6 is not set
+# CONFIG_FW_LOADER is not set
 CONFIG_MTD=y
 CONFIG_MTD_PARTITIONS=y
 CONFIG_MTD_CHAR=y
similarity index 97%
rename from arch/m68knommu/configs/m5249evb_defconfig
rename to arch/m68k/configs/m5249evb_defconfig
index 16df72bfbd45d0d493e1ea124282315b8ee53dd4..a6599e42facfb8cefb1062f7be679366a4ef5210 100644 (file)
@@ -1,3 +1,4 @@
+# CONFIG_MMU is not set
 CONFIG_EXPERIMENTAL=y
 CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
@@ -35,6 +36,7 @@ CONFIG_INET=y
 # CONFIG_INET_LRO is not set
 # CONFIG_INET_DIAG is not set
 # CONFIG_IPV6 is not set
+# CONFIG_FW_LOADER is not set
 CONFIG_MTD=y
 CONFIG_MTD_PARTITIONS=y
 CONFIG_MTD_CHAR=y
similarity index 96%
rename from arch/m68knommu/configs/m5272c3_defconfig
rename to arch/m68k/configs/m5272c3_defconfig
index 4e6ea50c7f33f75c84f916efe1d8835d189304b2..3fa60a57a0f9a19eab0872db442251c87f65f606 100644 (file)
@@ -1,3 +1,4 @@
+# CONFIG_MMU is not set
 CONFIG_EXPERIMENTAL=y
 CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
@@ -33,6 +34,7 @@ CONFIG_INET=y
 # CONFIG_INET_LRO is not set
 # CONFIG_INET_DIAG is not set
 # CONFIG_IPV6 is not set
+# CONFIG_FW_LOADER is not set
 CONFIG_MTD=y
 CONFIG_MTD_PARTITIONS=y
 CONFIG_MTD_CHAR=y
similarity index 97%
rename from arch/m68knommu/configs/m5275evb_defconfig
rename to arch/m68k/configs/m5275evb_defconfig
index f3dd74115a348de03e8caf7d70e7861f1e250e29..33c32aeca12beb418955260a4f83a127ef900960 100644 (file)
@@ -1,3 +1,4 @@
+# CONFIG_MMU is not set
 CONFIG_EXPERIMENTAL=y
 CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
@@ -36,6 +37,7 @@ CONFIG_INET=y
 # CONFIG_INET_LRO is not set
 # CONFIG_INET_DIAG is not set
 # CONFIG_IPV6 is not set
+# CONFIG_FW_LOADER is not set
 CONFIG_MTD=y
 CONFIG_MTD_PARTITIONS=y
 CONFIG_MTD_CHAR=y
similarity index 97%
rename from arch/m68knommu/configs/m5307c3_defconfig
rename to arch/m68k/configs/m5307c3_defconfig
index bce0a20c37371dc806237ce6ea5c2d803fc0f89b..43795f41f7c7b1da1267c8c5bef183cde4e97257 100644 (file)
@@ -1,3 +1,4 @@
+# CONFIG_MMU is not set
 CONFIG_EXPERIMENTAL=y
 CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
@@ -35,6 +36,7 @@ CONFIG_INET=y
 # CONFIG_INET_LRO is not set
 # CONFIG_INET_DIAG is not set
 # CONFIG_IPV6 is not set
+# CONFIG_FW_LOADER is not set
 CONFIG_MTD=y
 CONFIG_MTD_PARTITIONS=y
 CONFIG_MTD_CHAR=y
similarity index 97%
rename from arch/m68knommu/configs/m5407c3_defconfig
rename to arch/m68k/configs/m5407c3_defconfig
index 618cc32691f244b8cd1da01251312e027fb2d31f..72746c57a571312b47b4b2989bd05d08ffa9180c 100644 (file)
@@ -1,3 +1,4 @@
+# CONFIG_MMU is not set
 CONFIG_EXPERIMENTAL=y
 CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
@@ -35,6 +36,7 @@ CONFIG_INET=y
 # CONFIG_INET_LRO is not set
 # CONFIG_INET_DIAG is not set
 # CONFIG_IPV6 is not set
+# CONFIG_FW_LOADER is not set
 CONFIG_MTD=y
 CONFIG_MTD_PARTITIONS=y
 CONFIG_MTD_CHAR=y
index 55d5d6b680a211376390499ee2aee7d2e5d41b61..c482ebc9dd543515b1d413653a2f88616d1722f2 100644 (file)
@@ -1,17 +1,5 @@
-#
-# Makefile for the linux kernel.
-#
-
-ifndef CONFIG_SUN3
-  extra-y := head.o
+ifdef CONFIG_MMU
+include arch/m68k/kernel/Makefile_mm
 else
-  extra-y := sun3-head.o
+include arch/m68k/kernel/Makefile_no
 endif
-extra-y        += vmlinux.lds
-
-obj-y  := entry.o process.o traps.o ints.o signal.o ptrace.o module.o \
-          sys_m68k.o time.o setup.o m68k_ksyms.o devres.o
-
-devres-y = ../../../kernel/irq/devres.o
-
-obj-y$(CONFIG_MMU_SUN3) += dma.o       # no, it's not a typo
diff --git a/arch/m68k/kernel/Makefile_mm b/arch/m68k/kernel/Makefile_mm
new file mode 100644 (file)
index 0000000..55d5d6b
--- /dev/null
@@ -0,0 +1,17 @@
+#
+# Makefile for the linux kernel.
+#
+
+ifndef CONFIG_SUN3
+  extra-y := head.o
+else
+  extra-y := sun3-head.o
+endif
+extra-y        += vmlinux.lds
+
+obj-y  := entry.o process.o traps.o ints.o signal.o ptrace.o module.o \
+          sys_m68k.o time.o setup.o m68k_ksyms.o devres.o
+
+devres-y = ../../../kernel/irq/devres.o
+
+obj-y$(CONFIG_MMU_SUN3) += dma.o       # no, it's not a typo
index 78e59b82ebc397ca8f1f4f0df0878aaeb3083be2..59a69a5c62f25243bb9ddbb3195ee1b3d1469bf8 100644 (file)
@@ -1,100 +1,5 @@
-/*
- * This program is used to generate definitions needed by
- * assembly language modules.
- *
- * We use the technique used in the OSF Mach kernel code:
- * generate asm statements containing #defines,
- * compile this file to assembler, and then extract the
- * #defines from the assembly-language output.
- */
-
-#define ASM_OFFSETS_C
-
-#include <linux/stddef.h>
-#include <linux/sched.h>
-#include <linux/kernel_stat.h>
-#include <linux/kbuild.h>
-#include <asm/bootinfo.h>
-#include <asm/irq.h>
-#include <asm/amigahw.h>
-#include <linux/font.h>
-
-int main(void)
-{
-       /* offsets into the task struct */
-       DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
-       DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info));
-       DEFINE(TASK_MM, offsetof(struct task_struct, mm));
 #ifdef CONFIG_MMU
-       DEFINE(TASK_TINFO, offsetof(struct task_struct, thread.info));
+#include "asm-offsets_mm.c"
+#else
+#include "asm-offsets_no.c"
 #endif
-
-       /* offsets into the thread struct */
-       DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
-       DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));
-       DEFINE(THREAD_SR, offsetof(struct thread_struct, sr));
-       DEFINE(THREAD_FS, offsetof(struct thread_struct, fs));
-       DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp));
-       DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0));
-       DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp));
-       DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl));
-       DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate));
-
-       /* offsets into the thread_info struct */
-       DEFINE(TINFO_PREEMPT, offsetof(struct thread_info, preempt_count));
-       DEFINE(TINFO_FLAGS, offsetof(struct thread_info, flags));
-
-       /* offsets into the pt_regs */
-       DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0));
-       DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0));
-       DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1));
-       DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2));
-       DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3));
-       DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4));
-       DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5));
-       DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0));
-       DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1));
-       DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2));
-       DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc));
-       DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr));
-       /* bitfields are a bit difficult */
-       DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4);
-
-       /* offsets into the irq_cpustat_t struct */
-       DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending));
-
-       /* offsets into the bi_record struct */
-       DEFINE(BIR_TAG, offsetof(struct bi_record, tag));
-       DEFINE(BIR_SIZE, offsetof(struct bi_record, size));
-       DEFINE(BIR_DATA, offsetof(struct bi_record, data));
-
-       /* offsets into font_desc (drivers/video/console/font.h) */
-       DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx));
-       DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name));
-       DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width));
-       DEFINE(FONT_DESC_HEIGHT, offsetof(struct font_desc, height));
-       DEFINE(FONT_DESC_DATA, offsetof(struct font_desc, data));
-       DEFINE(FONT_DESC_PREF, offsetof(struct font_desc, pref));
-
-       /* signal defines */
-       DEFINE(LSIGSEGV, SIGSEGV);
-       DEFINE(LSEGV_MAPERR, SEGV_MAPERR);
-       DEFINE(LSIGTRAP, SIGTRAP);
-       DEFINE(LTRAP_TRACE, TRAP_TRACE);
-
-       /* offsets into the custom struct */
-       DEFINE(CUSTOMBASE, &amiga_custom);
-       DEFINE(C_INTENAR, offsetof(struct CUSTOM, intenar));
-       DEFINE(C_INTREQR, offsetof(struct CUSTOM, intreqr));
-       DEFINE(C_INTENA, offsetof(struct CUSTOM, intena));
-       DEFINE(C_INTREQ, offsetof(struct CUSTOM, intreq));
-       DEFINE(C_SERDATR, offsetof(struct CUSTOM, serdatr));
-       DEFINE(C_SERDAT, offsetof(struct CUSTOM, serdat));
-       DEFINE(C_SERPER, offsetof(struct CUSTOM, serper));
-       DEFINE(CIAABASE, &ciaa);
-       DEFINE(CIABBASE, &ciab);
-       DEFINE(C_PRA, offsetof(struct CIA, pra));
-       DEFINE(ZTWOBASE, zTwoBase);
-
-       return 0;
-}
diff --git a/arch/m68k/kernel/asm-offsets_mm.c b/arch/m68k/kernel/asm-offsets_mm.c
new file mode 100644 (file)
index 0000000..78e59b8
--- /dev/null
@@ -0,0 +1,100 @@
+/*
+ * This program is used to generate definitions needed by
+ * assembly language modules.
+ *
+ * We use the technique used in the OSF Mach kernel code:
+ * generate asm statements containing #defines,
+ * compile this file to assembler, and then extract the
+ * #defines from the assembly-language output.
+ */
+
+#define ASM_OFFSETS_C
+
+#include <linux/stddef.h>
+#include <linux/sched.h>
+#include <linux/kernel_stat.h>
+#include <linux/kbuild.h>
+#include <asm/bootinfo.h>
+#include <asm/irq.h>
+#include <asm/amigahw.h>
+#include <linux/font.h>
+
+int main(void)
+{
+       /* offsets into the task struct */
+       DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
+       DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info));
+       DEFINE(TASK_MM, offsetof(struct task_struct, mm));
+#ifdef CONFIG_MMU
+       DEFINE(TASK_TINFO, offsetof(struct task_struct, thread.info));
+#endif
+
+       /* offsets into the thread struct */
+       DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
+       DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));
+       DEFINE(THREAD_SR, offsetof(struct thread_struct, sr));
+       DEFINE(THREAD_FS, offsetof(struct thread_struct, fs));
+       DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp));
+       DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0));
+       DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp));
+       DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl));
+       DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate));
+
+       /* offsets into the thread_info struct */
+       DEFINE(TINFO_PREEMPT, offsetof(struct thread_info, preempt_count));
+       DEFINE(TINFO_FLAGS, offsetof(struct thread_info, flags));
+
+       /* offsets into the pt_regs */
+       DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0));
+       DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0));
+       DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1));
+       DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2));
+       DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3));
+       DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4));
+       DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5));
+       DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0));
+       DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1));
+       DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2));
+       DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc));
+       DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr));
+       /* bitfields are a bit difficult */
+       DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4);
+
+       /* offsets into the irq_cpustat_t struct */
+       DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending));
+
+       /* offsets into the bi_record struct */
+       DEFINE(BIR_TAG, offsetof(struct bi_record, tag));
+       DEFINE(BIR_SIZE, offsetof(struct bi_record, size));
+       DEFINE(BIR_DATA, offsetof(struct bi_record, data));
+
+       /* offsets into font_desc (drivers/video/console/font.h) */
+       DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx));
+       DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name));
+       DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width));
+       DEFINE(FONT_DESC_HEIGHT, offsetof(struct font_desc, height));
+       DEFINE(FONT_DESC_DATA, offsetof(struct font_desc, data));
+       DEFINE(FONT_DESC_PREF, offsetof(struct font_desc, pref));
+
+       /* signal defines */
+       DEFINE(LSIGSEGV, SIGSEGV);
+       DEFINE(LSEGV_MAPERR, SEGV_MAPERR);
+       DEFINE(LSIGTRAP, SIGTRAP);
+       DEFINE(LTRAP_TRACE, TRAP_TRACE);
+
+       /* offsets into the custom struct */
+       DEFINE(CUSTOMBASE, &amiga_custom);
+       DEFINE(C_INTENAR, offsetof(struct CUSTOM, intenar));
+       DEFINE(C_INTREQR, offsetof(struct CUSTOM, intreqr));
+       DEFINE(C_INTENA, offsetof(struct CUSTOM, intena));
+       DEFINE(C_INTREQ, offsetof(struct CUSTOM, intreq));
+       DEFINE(C_SERDATR, offsetof(struct CUSTOM, serdatr));
+       DEFINE(C_SERDAT, offsetof(struct CUSTOM, serdat));
+       DEFINE(C_SERPER, offsetof(struct CUSTOM, serper));
+       DEFINE(CIAABASE, &ciaa);
+       DEFINE(CIABBASE, &ciab);
+       DEFINE(C_PRA, offsetof(struct CIA, pra));
+       DEFINE(ZTWOBASE, zTwoBase);
+
+       return 0;
+}
index 4bbb3c2a888057e93c264c76e029909dc7bd8884..90e8cb726c8ca25bdfaa31178672ee8a99af6f4f 100644 (file)
@@ -1,130 +1,5 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file COPYING in the main directory of this archive
- * for more details.
- */
-
-#undef DEBUG
-
-#include <linux/dma-mapping.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-
-#include <asm/pgalloc.h>
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
-                        dma_addr_t *handle, gfp_t flag)
-{
-       struct page *page, **map;
-       pgprot_t pgprot;
-       void *addr;
-       int i, order;
-
-       pr_debug("dma_alloc_coherent: %d,%x\n", size, flag);
-
-       size = PAGE_ALIGN(size);
-       order = get_order(size);
-
-       page = alloc_pages(flag, order);
-       if (!page)
-               return NULL;
-
-       *handle = page_to_phys(page);
-       map = kmalloc(sizeof(struct page *) << order, flag & ~__GFP_DMA);
-       if (!map) {
-               __free_pages(page, order);
-               return NULL;
-       }
-       split_page(page, order);
-
-       order = 1 << order;
-       size >>= PAGE_SHIFT;
-       map[0] = page;
-       for (i = 1; i < size; i++)
-               map[i] = page + i;
-       for (; i < order; i++)
-               __free_page(page + i);
-       pgprot = __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY);
-       if (CPU_IS_040_OR_060)
-               pgprot_val(pgprot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S;
-       else
-               pgprot_val(pgprot) |= _PAGE_NOCACHE030;
-       addr = vmap(map, size, VM_MAP, pgprot);
-       kfree(map);
-
-       return addr;
-}
-EXPORT_SYMBOL(dma_alloc_coherent);
-
-void dma_free_coherent(struct device *dev, size_t size,
-                      void *addr, dma_addr_t handle)
-{
-       pr_debug("dma_free_coherent: %p, %x\n", addr, handle);
-       vfree(addr);
-}
-EXPORT_SYMBOL(dma_free_coherent);
-
-void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
-                               size_t size, enum dma_data_direction dir)
-{
-       switch (dir) {
-       case DMA_TO_DEVICE:
-               cache_push(handle, size);
-               break;
-       case DMA_FROM_DEVICE:
-               cache_clear(handle, size);
-               break;
-       default:
-               if (printk_ratelimit())
-                       printk("dma_sync_single_for_device: unsupported dir %u\n", dir);
-               break;
-       }
-}
-EXPORT_SYMBOL(dma_sync_single_for_device);
-
-void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
-                           enum dma_data_direction dir)
-{
-       int i;
-
-       for (i = 0; i < nents; sg++, i++)
-               dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir);
-}
-EXPORT_SYMBOL(dma_sync_sg_for_device);
-
-dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size,
-                         enum dma_data_direction dir)
-{
-       dma_addr_t handle = virt_to_bus(addr);
-
-       dma_sync_single_for_device(dev, handle, size, dir);
-       return handle;
-}
-EXPORT_SYMBOL(dma_map_single);
-
-dma_addr_t dma_map_page(struct device *dev, struct page *page,
-                       unsigned long offset, size_t size,
-                       enum dma_data_direction dir)
-{
-       dma_addr_t handle = page_to_phys(page) + offset;
-
-       dma_sync_single_for_device(dev, handle, size, dir);
-       return handle;
-}
-EXPORT_SYMBOL(dma_map_page);
-
-int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
-              enum dma_data_direction dir)
-{
-       int i;
-
-       for (i = 0; i < nents; sg++, i++) {
-               sg->dma_address = sg_phys(sg);
-               dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir);
-       }
-       return nents;
-}
-EXPORT_SYMBOL(dma_map_sg);
+#ifdef CONFIG_MMU
+#include "dma_mm.c"
+#else
+#include "dma_no.c"
+#endif
diff --git a/arch/m68k/kernel/dma_mm.c b/arch/m68k/kernel/dma_mm.c
new file mode 100644 (file)
index 0000000..4bbb3c2
--- /dev/null
@@ -0,0 +1,130 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#undef DEBUG
+
+#include <linux/dma-mapping.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/scatterlist.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+
+#include <asm/pgalloc.h>
+
+void *dma_alloc_coherent(struct device *dev, size_t size,
+                        dma_addr_t *handle, gfp_t flag)
+{
+       struct page *page, **map;
+       pgprot_t pgprot;
+       void *addr;
+       int i, order;
+
+       pr_debug("dma_alloc_coherent: %d,%x\n", size, flag);
+
+       size = PAGE_ALIGN(size);
+       order = get_order(size);
+
+       page = alloc_pages(flag, order);
+       if (!page)
+               return NULL;
+
+       *handle = page_to_phys(page);
+       map = kmalloc(sizeof(struct page *) << order, flag & ~__GFP_DMA);
+       if (!map) {
+               __free_pages(page, order);
+               return NULL;
+       }
+       split_page(page, order);
+
+       order = 1 << order;
+       size >>= PAGE_SHIFT;
+       map[0] = page;
+       for (i = 1; i < size; i++)
+               map[i] = page + i;
+       for (; i < order; i++)
+               __free_page(page + i);
+       pgprot = __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY);
+       if (CPU_IS_040_OR_060)
+               pgprot_val(pgprot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S;
+       else
+               pgprot_val(pgprot) |= _PAGE_NOCACHE030;
+       addr = vmap(map, size, VM_MAP, pgprot);
+       kfree(map);
+
+       return addr;
+}
+EXPORT_SYMBOL(dma_alloc_coherent);
+
+void dma_free_coherent(struct device *dev, size_t size,
+                      void *addr, dma_addr_t handle)
+{
+       pr_debug("dma_free_coherent: %p, %x\n", addr, handle);
+       vfree(addr);
+}
+EXPORT_SYMBOL(dma_free_coherent);
+
+void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
+                               size_t size, enum dma_data_direction dir)
+{
+       switch (dir) {
+       case DMA_TO_DEVICE:
+               cache_push(handle, size);
+               break;
+       case DMA_FROM_DEVICE:
+               cache_clear(handle, size);
+               break;
+       default:
+               if (printk_ratelimit())
+                       printk("dma_sync_single_for_device: unsupported dir %u\n", dir);
+               break;
+       }
+}
+EXPORT_SYMBOL(dma_sync_single_for_device);
+
+void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
+                           enum dma_data_direction dir)
+{
+       int i;
+
+       for (i = 0; i < nents; sg++, i++)
+               dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir);
+}
+EXPORT_SYMBOL(dma_sync_sg_for_device);
+
+dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size,
+                         enum dma_data_direction dir)
+{
+       dma_addr_t handle = virt_to_bus(addr);
+
+       dma_sync_single_for_device(dev, handle, size, dir);
+       return handle;
+}
+EXPORT_SYMBOL(dma_map_single);
+
+dma_addr_t dma_map_page(struct device *dev, struct page *page,
+                       unsigned long offset, size_t size,
+                       enum dma_data_direction dir)
+{
+       dma_addr_t handle = page_to_phys(page) + offset;
+
+       dma_sync_single_for_device(dev, handle, size, dir);
+       return handle;
+}
+EXPORT_SYMBOL(dma_map_page);
+
+int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+              enum dma_data_direction dir)
+{
+       int i;
+
+       for (i = 0; i < nents; sg++, i++) {
+               sg->dma_address = sg_phys(sg);
+               dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir);
+       }
+       return nents;
+}
+EXPORT_SYMBOL(dma_map_sg);
index 1559dea36e5581f62bf2d8b4b1fe6c6da37308f4..081cf96f243b01ee4cbea14b415f7364c08fd0fe 100644 (file)
@@ -1,753 +1,5 @@
-/* -*- mode: asm -*-
- *
- *  linux/arch/m68k/kernel/entry.S
- *
- *  Copyright (C) 1991, 1992  Linus Torvalds
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file README.legal in the main directory of this archive
- * for more details.
- *
- * Linux/m68k support by Hamish Macdonald
- *
- * 68060 fixes by Jesper Skov
- *
- */
-
-/*
- * entry.S  contains the system-call and fault low-level handling routines.
- * This also contains the timer-interrupt handler, as well as all interrupts
- * and faults that can result in a task-switch.
- *
- * NOTE: This code handles signal-recognition, which happens every time
- * after a timer-interrupt and after each system call.
- *
- */
-
-/*
- * 12/03/96 Jes: Currently we only support m68k single-cpu systems, so
- *               all pointers that used to be 'current' are now entry
- *               number 0 in the 'current_set' list.
- *
- *  6/05/00 RZ:         addedd writeback completion after return from sighandler
- *              for 68040
- */
-
-#include <linux/linkage.h>
-#include <asm/entry.h>
-#include <asm/errno.h>
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/traps.h>
-#include <asm/unistd.h>
-
-#include <asm/asm-offsets.h>
-
-.globl system_call, buserr, trap, resume
-.globl sys_call_table
-.globl sys_fork, sys_clone, sys_vfork
-.globl ret_from_interrupt, bad_interrupt
-.globl auto_irqhandler_fixup
-.globl user_irqvec_fixup, user_irqhandler_fixup
-
-.text
-ENTRY(buserr)
-       SAVE_ALL_INT
-       GET_CURRENT(%d0)
-       movel   %sp,%sp@-               | stack frame pointer argument
-       bsrl    buserr_c
-       addql   #4,%sp
-       jra     .Lret_from_exception
-
-ENTRY(trap)
-       SAVE_ALL_INT
-       GET_CURRENT(%d0)
-       movel   %sp,%sp@-               | stack frame pointer argument
-       bsrl    trap_c
-       addql   #4,%sp
-       jra     .Lret_from_exception
-
-       | After a fork we jump here directly from resume,
-       | so that %d1 contains the previous task
-       | schedule_tail now used regardless of CONFIG_SMP
-ENTRY(ret_from_fork)
-       movel   %d1,%sp@-
-       jsr     schedule_tail
-       addql   #4,%sp
-       jra     .Lret_from_exception
-
-do_trace_entry:
-       movel   #-ENOSYS,%sp@(PT_OFF_D0)| needed for strace
-       subql   #4,%sp
-       SAVE_SWITCH_STACK
-       jbsr    syscall_trace
-       RESTORE_SWITCH_STACK
-       addql   #4,%sp
-       movel   %sp@(PT_OFF_ORIG_D0),%d0
-       cmpl    #NR_syscalls,%d0
-       jcs     syscall
-badsys:
-       movel   #-ENOSYS,%sp@(PT_OFF_D0)
-       jra     ret_from_syscall
-
-do_trace_exit:
-       subql   #4,%sp
-       SAVE_SWITCH_STACK
-       jbsr    syscall_trace
-       RESTORE_SWITCH_STACK
-       addql   #4,%sp
-       jra     .Lret_from_exception
-
-ENTRY(ret_from_signal)
-       tstb    %curptr@(TASK_INFO+TINFO_FLAGS+2)
-       jge     1f
-       jbsr    syscall_trace
-1:     RESTORE_SWITCH_STACK
-       addql   #4,%sp
-/* on 68040 complete pending writebacks if any */
-#ifdef CONFIG_M68040
-       bfextu  %sp@(PT_OFF_FORMATVEC){#0,#4},%d0
-       subql   #7,%d0                          | bus error frame ?
-       jbne    1f
-       movel   %sp,%sp@-
-       jbsr    berr_040cleanup
-       addql   #4,%sp
-1:
+#ifdef CONFIG_MMU
+#include "entry_mm.S"
+#else
+#include "entry_no.S"
 #endif
-       jra     .Lret_from_exception
-
-ENTRY(system_call)
-       SAVE_ALL_SYS
-
-       GET_CURRENT(%d1)
-       | save top of frame
-       movel   %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
-
-       | syscall trace?
-       tstb    %curptr@(TASK_INFO+TINFO_FLAGS+2)
-       jmi     do_trace_entry
-       cmpl    #NR_syscalls,%d0
-       jcc     badsys
-syscall:
-       jbsr    @(sys_call_table,%d0:l:4)@(0)
-       movel   %d0,%sp@(PT_OFF_D0)     | save the return value
-ret_from_syscall:
-       |oriw   #0x0700,%sr
-       movew   %curptr@(TASK_INFO+TINFO_FLAGS+2),%d0
-       jne     syscall_exit_work
-1:     RESTORE_ALL
-
-syscall_exit_work:
-       btst    #5,%sp@(PT_OFF_SR)      | check if returning to kernel
-       bnes    1b                      | if so, skip resched, signals
-       lslw    #1,%d0
-       jcs     do_trace_exit
-       jmi     do_delayed_trace
-       lslw    #8,%d0
-       jmi     do_signal_return
-       pea     resume_userspace
-       jra     schedule
-
-
-ENTRY(ret_from_exception)
-.Lret_from_exception:
-       btst    #5,%sp@(PT_OFF_SR)      | check if returning to kernel
-       bnes    1f                      | if so, skip resched, signals
-       | only allow interrupts when we are really the last one on the
-       | kernel stack, otherwise stack overflow can occur during
-       | heavy interrupt load
-       andw    #ALLOWINT,%sr
-
-resume_userspace:
-       moveb   %curptr@(TASK_INFO+TINFO_FLAGS+3),%d0
-       jne     exit_work
-1:     RESTORE_ALL
-
-exit_work:
-       | save top of frame
-       movel   %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
-       lslb    #1,%d0
-       jmi     do_signal_return
-       pea     resume_userspace
-       jra     schedule
-
-
-do_signal_return:
-       |andw   #ALLOWINT,%sr
-       subql   #4,%sp                  | dummy return address
-       SAVE_SWITCH_STACK
-       pea     %sp@(SWITCH_STACK_SIZE)
-       bsrl    do_signal
-       addql   #4,%sp
-       RESTORE_SWITCH_STACK
-       addql   #4,%sp
-       jbra    resume_userspace
-
-do_delayed_trace:
-       bclr    #7,%sp@(PT_OFF_SR)      | clear trace bit in SR
-       pea     1                       | send SIGTRAP
-       movel   %curptr,%sp@-
-       pea     LSIGTRAP
-       jbsr    send_sig
-       addql   #8,%sp
-       addql   #4,%sp
-       jbra    resume_userspace
-
-
-/* This is the main interrupt handler for autovector interrupts */
-
-ENTRY(auto_inthandler)
-       SAVE_ALL_INT
-       GET_CURRENT(%d0)
-       addqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
-                                       |  put exception # in d0
-       bfextu  %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
-       subw    #VEC_SPUR,%d0
-
-       movel   %sp,%sp@-
-       movel   %d0,%sp@-               |  put vector # on stack
-auto_irqhandler_fixup = . + 2
-       jsr     __m68k_handle_int       |  process the IRQ
-       addql   #8,%sp                  |  pop parameters off stack
-
-ret_from_interrupt:
-       subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
-       jeq     ret_from_last_interrupt
-2:     RESTORE_ALL
-
-       ALIGN
-ret_from_last_interrupt:
-       moveq   #(~ALLOWINT>>8)&0xff,%d0
-       andb    %sp@(PT_OFF_SR),%d0
-       jne     2b
-
-       /* check if we need to do software interrupts */
-       tstl    irq_stat+CPUSTAT_SOFTIRQ_PENDING
-       jeq     .Lret_from_exception
-       pea     ret_from_exception
-       jra     do_softirq
-
-/* Handler for user defined interrupt vectors */
-
-ENTRY(user_inthandler)
-       SAVE_ALL_INT
-       GET_CURRENT(%d0)
-       addqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
-                                       |  put exception # in d0
-       bfextu  %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
-user_irqvec_fixup = . + 2
-       subw    #VEC_USER,%d0
-
-       movel   %sp,%sp@-
-       movel   %d0,%sp@-               |  put vector # on stack
-user_irqhandler_fixup = . + 2
-       jsr     __m68k_handle_int       |  process the IRQ
-       addql   #8,%sp                  |  pop parameters off stack
-
-       subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
-       jeq     ret_from_last_interrupt
-       RESTORE_ALL
-
-/* Handler for uninitialized and spurious interrupts */
-
-ENTRY(bad_inthandler)
-       SAVE_ALL_INT
-       GET_CURRENT(%d0)
-       addqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
-
-       movel   %sp,%sp@-
-       jsr     handle_badint
-       addql   #4,%sp
-
-       subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
-       jeq     ret_from_last_interrupt
-       RESTORE_ALL
-
-
-ENTRY(sys_fork)
-       SAVE_SWITCH_STACK
-       pea     %sp@(SWITCH_STACK_SIZE)
-       jbsr    m68k_fork
-       addql   #4,%sp
-       RESTORE_SWITCH_STACK
-       rts
-
-ENTRY(sys_clone)
-       SAVE_SWITCH_STACK
-       pea     %sp@(SWITCH_STACK_SIZE)
-       jbsr    m68k_clone
-       addql   #4,%sp
-       RESTORE_SWITCH_STACK
-       rts
-
-ENTRY(sys_vfork)
-       SAVE_SWITCH_STACK
-       pea     %sp@(SWITCH_STACK_SIZE)
-       jbsr    m68k_vfork
-       addql   #4,%sp
-       RESTORE_SWITCH_STACK
-       rts
-
-ENTRY(sys_sigreturn)
-       SAVE_SWITCH_STACK
-       jbsr    do_sigreturn
-       RESTORE_SWITCH_STACK
-       rts
-
-ENTRY(sys_rt_sigreturn)
-       SAVE_SWITCH_STACK
-       jbsr    do_rt_sigreturn
-       RESTORE_SWITCH_STACK
-       rts
-
-resume:
-       /*
-        * Beware - when entering resume, prev (the current task) is
-        * in a0, next (the new task) is in a1,so don't change these
-        * registers until their contents are no longer needed.
-        */
-
-       /* save sr */
-       movew   %sr,%a0@(TASK_THREAD+THREAD_SR)
-
-       /* save fs (sfc,%dfc) (may be pointing to kernel memory) */
-       movec   %sfc,%d0
-       movew   %d0,%a0@(TASK_THREAD+THREAD_FS)
-
-       /* save usp */
-       /* it is better to use a movel here instead of a movew 8*) */
-       movec   %usp,%d0
-       movel   %d0,%a0@(TASK_THREAD+THREAD_USP)
-
-       /* save non-scratch registers on stack */
-       SAVE_SWITCH_STACK
-
-       /* save current kernel stack pointer */
-       movel   %sp,%a0@(TASK_THREAD+THREAD_KSP)
-
-       /* save floating point context */
-#ifndef CONFIG_M68KFPU_EMU_ONLY
-#ifdef CONFIG_M68KFPU_EMU
-       tstl    m68k_fputype
-       jeq     3f
-#endif
-       fsave   %a0@(TASK_THREAD+THREAD_FPSTATE)
-
-#if defined(CONFIG_M68060)
-#if !defined(CPU_M68060_ONLY)
-       btst    #3,m68k_cputype+3
-       beqs    1f
-#endif
-       /* The 060 FPU keeps status in bits 15-8 of the first longword */
-       tstb    %a0@(TASK_THREAD+THREAD_FPSTATE+2)
-       jeq     3f
-#if !defined(CPU_M68060_ONLY)
-       jra     2f
-#endif
-#endif /* CONFIG_M68060 */
-#if !defined(CPU_M68060_ONLY)
-1:     tstb    %a0@(TASK_THREAD+THREAD_FPSTATE)
-       jeq     3f
-#endif
-2:     fmovemx %fp0-%fp7,%a0@(TASK_THREAD+THREAD_FPREG)
-       fmoveml %fpcr/%fpsr/%fpiar,%a0@(TASK_THREAD+THREAD_FPCNTL)
-3:
-#endif /* CONFIG_M68KFPU_EMU_ONLY */
-       /* Return previous task in %d1 */
-       movel   %curptr,%d1
-
-       /* switch to new task (a1 contains new task) */
-       movel   %a1,%curptr
-
-       /* restore floating point context */
-#ifndef CONFIG_M68KFPU_EMU_ONLY
-#ifdef CONFIG_M68KFPU_EMU
-       tstl    m68k_fputype
-       jeq     4f
-#endif
-#if defined(CONFIG_M68060)
-#if !defined(CPU_M68060_ONLY)
-       btst    #3,m68k_cputype+3
-       beqs    1f
-#endif
-       /* The 060 FPU keeps status in bits 15-8 of the first longword */
-       tstb    %a1@(TASK_THREAD+THREAD_FPSTATE+2)
-       jeq     3f
-#if !defined(CPU_M68060_ONLY)
-       jra     2f
-#endif
-#endif /* CONFIG_M68060 */
-#if !defined(CPU_M68060_ONLY)
-1:     tstb    %a1@(TASK_THREAD+THREAD_FPSTATE)
-       jeq     3f
-#endif
-2:     fmovemx %a1@(TASK_THREAD+THREAD_FPREG),%fp0-%fp7
-       fmoveml %a1@(TASK_THREAD+THREAD_FPCNTL),%fpcr/%fpsr/%fpiar
-3:     frestore %a1@(TASK_THREAD+THREAD_FPSTATE)
-4:
-#endif /* CONFIG_M68KFPU_EMU_ONLY */
-
-       /* restore the kernel stack pointer */
-       movel   %a1@(TASK_THREAD+THREAD_KSP),%sp
-
-       /* restore non-scratch registers */
-       RESTORE_SWITCH_STACK
-
-       /* restore user stack pointer */
-       movel   %a1@(TASK_THREAD+THREAD_USP),%a0
-       movel   %a0,%usp
-
-       /* restore fs (sfc,%dfc) */
-       movew   %a1@(TASK_THREAD+THREAD_FS),%a0
-       movec   %a0,%sfc
-       movec   %a0,%dfc
-
-       /* restore status register */
-       movew   %a1@(TASK_THREAD+THREAD_SR),%sr
-
-       rts
-
-.data
-ALIGN
-sys_call_table:
-       .long sys_restart_syscall       /* 0 - old "setup()" system call, used for restarting */
-       .long sys_exit
-       .long sys_fork
-       .long sys_read
-       .long sys_write
-       .long sys_open          /* 5 */
-       .long sys_close
-       .long sys_waitpid
-       .long sys_creat
-       .long sys_link
-       .long sys_unlink        /* 10 */
-       .long sys_execve
-       .long sys_chdir
-       .long sys_time
-       .long sys_mknod
-       .long sys_chmod         /* 15 */
-       .long sys_chown16
-       .long sys_ni_syscall                            /* old break syscall holder */
-       .long sys_stat
-       .long sys_lseek
-       .long sys_getpid        /* 20 */
-       .long sys_mount
-       .long sys_oldumount
-       .long sys_setuid16
-       .long sys_getuid16
-       .long sys_stime         /* 25 */
-       .long sys_ptrace
-       .long sys_alarm
-       .long sys_fstat
-       .long sys_pause
-       .long sys_utime         /* 30 */
-       .long sys_ni_syscall                            /* old stty syscall holder */
-       .long sys_ni_syscall                            /* old gtty syscall holder */
-       .long sys_access
-       .long sys_nice
-       .long sys_ni_syscall    /* 35 */        /* old ftime syscall holder */
-       .long sys_sync
-       .long sys_kill
-       .long sys_rename
-       .long sys_mkdir
-       .long sys_rmdir         /* 40 */
-       .long sys_dup
-       .long sys_pipe
-       .long sys_times
-       .long sys_ni_syscall                            /* old prof syscall holder */
-       .long sys_brk           /* 45 */
-       .long sys_setgid16
-       .long sys_getgid16
-       .long sys_signal
-       .long sys_geteuid16
-       .long sys_getegid16     /* 50 */
-       .long sys_acct
-       .long sys_umount                                /* recycled never used phys() */
-       .long sys_ni_syscall                            /* old lock syscall holder */
-       .long sys_ioctl
-       .long sys_fcntl         /* 55 */
-       .long sys_ni_syscall                            /* old mpx syscall holder */
-       .long sys_setpgid
-       .long sys_ni_syscall                            /* old ulimit syscall holder */
-       .long sys_ni_syscall
-       .long sys_umask         /* 60 */
-       .long sys_chroot
-       .long sys_ustat
-       .long sys_dup2
-       .long sys_getppid
-       .long sys_getpgrp       /* 65 */
-       .long sys_setsid
-       .long sys_sigaction
-       .long sys_sgetmask
-       .long sys_ssetmask
-       .long sys_setreuid16    /* 70 */
-       .long sys_setregid16
-       .long sys_sigsuspend
-       .long sys_sigpending
-       .long sys_sethostname
-       .long sys_setrlimit     /* 75 */
-       .long sys_old_getrlimit
-       .long sys_getrusage
-       .long sys_gettimeofday
-       .long sys_settimeofday
-       .long sys_getgroups16   /* 80 */
-       .long sys_setgroups16
-       .long sys_old_select
-       .long sys_symlink
-       .long sys_lstat
-       .long sys_readlink      /* 85 */
-       .long sys_uselib
-       .long sys_swapon
-       .long sys_reboot
-       .long sys_old_readdir
-       .long sys_old_mmap      /* 90 */
-       .long sys_munmap
-       .long sys_truncate
-       .long sys_ftruncate
-       .long sys_fchmod
-       .long sys_fchown16      /* 95 */
-       .long sys_getpriority
-       .long sys_setpriority
-       .long sys_ni_syscall                            /* old profil syscall holder */
-       .long sys_statfs
-       .long sys_fstatfs       /* 100 */
-       .long sys_ni_syscall                            /* ioperm for i386 */
-       .long sys_socketcall
-       .long sys_syslog
-       .long sys_setitimer
-       .long sys_getitimer     /* 105 */
-       .long sys_newstat
-       .long sys_newlstat
-       .long sys_newfstat
-       .long sys_ni_syscall
-       .long sys_ni_syscall    /* 110 */       /* iopl for i386 */
-       .long sys_vhangup
-       .long sys_ni_syscall                            /* obsolete idle() syscall */
-       .long sys_ni_syscall                            /* vm86old for i386 */
-       .long sys_wait4
-       .long sys_swapoff       /* 115 */
-       .long sys_sysinfo
-       .long sys_ipc
-       .long sys_fsync
-       .long sys_sigreturn
-       .long sys_clone         /* 120 */
-       .long sys_setdomainname
-       .long sys_newuname
-       .long sys_cacheflush                            /* modify_ldt for i386 */
-       .long sys_adjtimex
-       .long sys_mprotect      /* 125 */
-       .long sys_sigprocmask
-       .long sys_ni_syscall            /* old "create_module" */
-       .long sys_init_module
-       .long sys_delete_module
-       .long sys_ni_syscall    /* 130 - old "get_kernel_syms" */
-       .long sys_quotactl
-       .long sys_getpgid
-       .long sys_fchdir
-       .long sys_bdflush
-       .long sys_sysfs         /* 135 */
-       .long sys_personality
-       .long sys_ni_syscall                            /* for afs_syscall */
-       .long sys_setfsuid16
-       .long sys_setfsgid16
-       .long sys_llseek        /* 140 */
-       .long sys_getdents
-       .long sys_select
-       .long sys_flock
-       .long sys_msync
-       .long sys_readv         /* 145 */
-       .long sys_writev
-       .long sys_getsid
-       .long sys_fdatasync
-       .long sys_sysctl
-       .long sys_mlock         /* 150 */
-       .long sys_munlock
-       .long sys_mlockall
-       .long sys_munlockall
-       .long sys_sched_setparam
-       .long sys_sched_getparam        /* 155 */
-       .long sys_sched_setscheduler
-       .long sys_sched_getscheduler
-       .long sys_sched_yield
-       .long sys_sched_get_priority_max
-       .long sys_sched_get_priority_min  /* 160 */
-       .long sys_sched_rr_get_interval
-       .long sys_nanosleep
-       .long sys_mremap
-       .long sys_setresuid16
-       .long sys_getresuid16   /* 165 */
-       .long sys_getpagesize
-       .long sys_ni_syscall            /* old sys_query_module */
-       .long sys_poll
-       .long sys_nfsservctl
-       .long sys_setresgid16   /* 170 */
-       .long sys_getresgid16
-       .long sys_prctl
-       .long sys_rt_sigreturn
-       .long sys_rt_sigaction
-       .long sys_rt_sigprocmask        /* 175 */
-       .long sys_rt_sigpending
-       .long sys_rt_sigtimedwait
-       .long sys_rt_sigqueueinfo
-       .long sys_rt_sigsuspend
-       .long sys_pread64       /* 180 */
-       .long sys_pwrite64
-       .long sys_lchown16;
-       .long sys_getcwd
-       .long sys_capget
-       .long sys_capset        /* 185 */
-       .long sys_sigaltstack
-       .long sys_sendfile
-       .long sys_ni_syscall                            /* streams1 */
-       .long sys_ni_syscall                            /* streams2 */
-       .long sys_vfork         /* 190 */
-       .long sys_getrlimit
-       .long sys_mmap2
-       .long sys_truncate64
-       .long sys_ftruncate64
-       .long sys_stat64        /* 195 */
-       .long sys_lstat64
-       .long sys_fstat64
-       .long sys_chown
-       .long sys_getuid
-       .long sys_getgid        /* 200 */
-       .long sys_geteuid
-       .long sys_getegid
-       .long sys_setreuid
-       .long sys_setregid
-       .long sys_getgroups     /* 205 */
-       .long sys_setgroups
-       .long sys_fchown
-       .long sys_setresuid
-       .long sys_getresuid
-       .long sys_setresgid     /* 210 */
-       .long sys_getresgid
-       .long sys_lchown
-       .long sys_setuid
-       .long sys_setgid
-       .long sys_setfsuid      /* 215 */
-       .long sys_setfsgid
-       .long sys_pivot_root
-       .long sys_ni_syscall
-       .long sys_ni_syscall
-       .long sys_getdents64    /* 220 */
-       .long sys_gettid
-       .long sys_tkill
-       .long sys_setxattr
-       .long sys_lsetxattr
-       .long sys_fsetxattr     /* 225 */
-       .long sys_getxattr
-       .long sys_lgetxattr
-       .long sys_fgetxattr
-       .long sys_listxattr
-       .long sys_llistxattr    /* 230 */
-       .long sys_flistxattr
-       .long sys_removexattr
-       .long sys_lremovexattr
-       .long sys_fremovexattr
-       .long sys_futex         /* 235 */
-       .long sys_sendfile64
-       .long sys_mincore
-       .long sys_madvise
-       .long sys_fcntl64
-       .long sys_readahead     /* 240 */
-       .long sys_io_setup
-       .long sys_io_destroy
-       .long sys_io_getevents
-       .long sys_io_submit
-       .long sys_io_cancel     /* 245 */
-       .long sys_fadvise64
-       .long sys_exit_group
-       .long sys_lookup_dcookie
-       .long sys_epoll_create
-       .long sys_epoll_ctl     /* 250 */
-       .long sys_epoll_wait
-       .long sys_remap_file_pages
-       .long sys_set_tid_address
-       .long sys_timer_create
-       .long sys_timer_settime /* 255 */
-       .long sys_timer_gettime
-       .long sys_timer_getoverrun
-       .long sys_timer_delete
-       .long sys_clock_settime
-       .long sys_clock_gettime /* 260 */
-       .long sys_clock_getres
-       .long sys_clock_nanosleep
-       .long sys_statfs64
-       .long sys_fstatfs64
-       .long sys_tgkill        /* 265 */
-       .long sys_utimes
-       .long sys_fadvise64_64
-       .long sys_mbind
-       .long sys_get_mempolicy
-       .long sys_set_mempolicy /* 270 */
-       .long sys_mq_open
-       .long sys_mq_unlink
-       .long sys_mq_timedsend
-       .long sys_mq_timedreceive
-       .long sys_mq_notify     /* 275 */
-       .long sys_mq_getsetattr
-       .long sys_waitid
-       .long sys_ni_syscall    /* for sys_vserver */
-       .long sys_add_key
-       .long sys_request_key   /* 280 */
-       .long sys_keyctl
-       .long sys_ioprio_set
-       .long sys_ioprio_get
-       .long sys_inotify_init
-       .long sys_inotify_add_watch     /* 285 */
-       .long sys_inotify_rm_watch
-       .long sys_migrate_pages
-       .long sys_openat
-       .long sys_mkdirat
-       .long sys_mknodat               /* 290 */
-       .long sys_fchownat
-       .long sys_futimesat
-       .long sys_fstatat64
-       .long sys_unlinkat
-       .long sys_renameat              /* 295 */
-       .long sys_linkat
-       .long sys_symlinkat
-       .long sys_readlinkat
-       .long sys_fchmodat
-       .long sys_faccessat             /* 300 */
-       .long sys_ni_syscall            /* Reserved for pselect6 */
-       .long sys_ni_syscall            /* Reserved for ppoll */
-       .long sys_unshare
-       .long sys_set_robust_list
-       .long sys_get_robust_list       /* 305 */
-       .long sys_splice
-       .long sys_sync_file_range
-       .long sys_tee
-       .long sys_vmsplice
-       .long sys_move_pages            /* 310 */
-       .long sys_sched_setaffinity
-       .long sys_sched_getaffinity
-       .long sys_kexec_load
-       .long sys_getcpu
-       .long sys_epoll_pwait           /* 315 */
-       .long sys_utimensat
-       .long sys_signalfd
-       .long sys_timerfd_create
-       .long sys_eventfd
-       .long sys_fallocate             /* 320 */
-       .long sys_timerfd_settime
-       .long sys_timerfd_gettime
-       .long sys_signalfd4
-       .long sys_eventfd2
-       .long sys_epoll_create1         /* 325 */
-       .long sys_dup3
-       .long sys_pipe2
-       .long sys_inotify_init1
-       .long sys_preadv
-       .long sys_pwritev               /* 330 */
-       .long sys_rt_tgsigqueueinfo
-       .long sys_perf_event_open
-       .long sys_get_thread_area
-       .long sys_set_thread_area
-       .long sys_atomic_cmpxchg_32     /* 335 */
-       .long sys_atomic_barrier
-       .long sys_fanotify_init
-       .long sys_fanotify_mark
-       .long sys_prlimit64
-
diff --git a/arch/m68k/kernel/entry_mm.S b/arch/m68k/kernel/entry_mm.S
new file mode 100644 (file)
index 0000000..1559dea
--- /dev/null
@@ -0,0 +1,753 @@
+/* -*- mode: asm -*-
+ *
+ *  linux/arch/m68k/kernel/entry.S
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file README.legal in the main directory of this archive
+ * for more details.
+ *
+ * Linux/m68k support by Hamish Macdonald
+ *
+ * 68060 fixes by Jesper Skov
+ *
+ */
+
+/*
+ * entry.S  contains the system-call and fault low-level handling routines.
+ * This also contains the timer-interrupt handler, as well as all interrupts
+ * and faults that can result in a task-switch.
+ *
+ * NOTE: This code handles signal-recognition, which happens every time
+ * after a timer-interrupt and after each system call.
+ *
+ */
+
+/*
+ * 12/03/96 Jes: Currently we only support m68k single-cpu systems, so
+ *               all pointers that used to be 'current' are now entry
+ *               number 0 in the 'current_set' list.
+ *
+ *  6/05/00 RZ:         addedd writeback completion after return from sighandler
+ *              for 68040
+ */
+
+#include <linux/linkage.h>
+#include <asm/entry.h>
+#include <asm/errno.h>
+#include <asm/setup.h>
+#include <asm/segment.h>
+#include <asm/traps.h>
+#include <asm/unistd.h>
+
+#include <asm/asm-offsets.h>
+
+.globl system_call, buserr, trap, resume
+.globl sys_call_table
+.globl sys_fork, sys_clone, sys_vfork
+.globl ret_from_interrupt, bad_interrupt
+.globl auto_irqhandler_fixup
+.globl user_irqvec_fixup, user_irqhandler_fixup
+
+.text
+ENTRY(buserr)
+       SAVE_ALL_INT
+       GET_CURRENT(%d0)
+       movel   %sp,%sp@-               | stack frame pointer argument
+       bsrl    buserr_c
+       addql   #4,%sp
+       jra     .Lret_from_exception
+
+ENTRY(trap)
+       SAVE_ALL_INT
+       GET_CURRENT(%d0)
+       movel   %sp,%sp@-               | stack frame pointer argument
+       bsrl    trap_c
+       addql   #4,%sp
+       jra     .Lret_from_exception
+
+       | After a fork we jump here directly from resume,
+       | so that %d1 contains the previous task
+       | schedule_tail now used regardless of CONFIG_SMP
+ENTRY(ret_from_fork)
+       movel   %d1,%sp@-
+       jsr     schedule_tail
+       addql   #4,%sp
+       jra     .Lret_from_exception
+
+do_trace_entry:
+       movel   #-ENOSYS,%sp@(PT_OFF_D0)| needed for strace
+       subql   #4,%sp
+       SAVE_SWITCH_STACK
+       jbsr    syscall_trace
+       RESTORE_SWITCH_STACK
+       addql   #4,%sp
+       movel   %sp@(PT_OFF_ORIG_D0),%d0
+       cmpl    #NR_syscalls,%d0
+       jcs     syscall
+badsys:
+       movel   #-ENOSYS,%sp@(PT_OFF_D0)
+       jra     ret_from_syscall
+
+do_trace_exit:
+       subql   #4,%sp
+       SAVE_SWITCH_STACK
+       jbsr    syscall_trace
+       RESTORE_SWITCH_STACK
+       addql   #4,%sp
+       jra     .Lret_from_exception
+
+ENTRY(ret_from_signal)
+       tstb    %curptr@(TASK_INFO+TINFO_FLAGS+2)
+       jge     1f
+       jbsr    syscall_trace
+1:     RESTORE_SWITCH_STACK
+       addql   #4,%sp
+/* on 68040 complete pending writebacks if any */
+#ifdef CONFIG_M68040
+       bfextu  %sp@(PT_OFF_FORMATVEC){#0,#4},%d0
+       subql   #7,%d0                          | bus error frame ?
+       jbne    1f
+       movel   %sp,%sp@-
+       jbsr    berr_040cleanup
+       addql   #4,%sp
+1:
+#endif
+       jra     .Lret_from_exception
+
+ENTRY(system_call)
+       SAVE_ALL_SYS
+
+       GET_CURRENT(%d1)
+       | save top of frame
+       movel   %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
+
+       | syscall trace?
+       tstb    %curptr@(TASK_INFO+TINFO_FLAGS+2)
+       jmi     do_trace_entry
+       cmpl    #NR_syscalls,%d0
+       jcc     badsys
+syscall:
+       jbsr    @(sys_call_table,%d0:l:4)@(0)
+       movel   %d0,%sp@(PT_OFF_D0)     | save the return value
+ret_from_syscall:
+       |oriw   #0x0700,%sr
+       movew   %curptr@(TASK_INFO+TINFO_FLAGS+2),%d0
+       jne     syscall_exit_work
+1:     RESTORE_ALL
+
+syscall_exit_work:
+       btst    #5,%sp@(PT_OFF_SR)      | check if returning to kernel
+       bnes    1b                      | if so, skip resched, signals
+       lslw    #1,%d0
+       jcs     do_trace_exit
+       jmi     do_delayed_trace
+       lslw    #8,%d0
+       jmi     do_signal_return
+       pea     resume_userspace
+       jra     schedule
+
+
+ENTRY(ret_from_exception)
+.Lret_from_exception:
+       btst    #5,%sp@(PT_OFF_SR)      | check if returning to kernel
+       bnes    1f                      | if so, skip resched, signals
+       | only allow interrupts when we are really the last one on the
+       | kernel stack, otherwise stack overflow can occur during
+       | heavy interrupt load
+       andw    #ALLOWINT,%sr
+
+resume_userspace:
+       moveb   %curptr@(TASK_INFO+TINFO_FLAGS+3),%d0
+       jne     exit_work
+1:     RESTORE_ALL
+
+exit_work:
+       | save top of frame
+       movel   %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
+       lslb    #1,%d0
+       jmi     do_signal_return
+       pea     resume_userspace
+       jra     schedule
+
+
+do_signal_return:
+       |andw   #ALLOWINT,%sr
+       subql   #4,%sp                  | dummy return address
+       SAVE_SWITCH_STACK
+       pea     %sp@(SWITCH_STACK_SIZE)
+       bsrl    do_signal
+       addql   #4,%sp
+       RESTORE_SWITCH_STACK
+       addql   #4,%sp
+       jbra    resume_userspace
+
+do_delayed_trace:
+       bclr    #7,%sp@(PT_OFF_SR)      | clear trace bit in SR
+       pea     1                       | send SIGTRAP
+       movel   %curptr,%sp@-
+       pea     LSIGTRAP
+       jbsr    send_sig
+       addql   #8,%sp
+       addql   #4,%sp
+       jbra    resume_userspace
+
+
+/* This is the main interrupt handler for autovector interrupts */
+
+ENTRY(auto_inthandler)
+       SAVE_ALL_INT
+       GET_CURRENT(%d0)
+       addqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+                                       |  put exception # in d0
+       bfextu  %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
+       subw    #VEC_SPUR,%d0
+
+       movel   %sp,%sp@-
+       movel   %d0,%sp@-               |  put vector # on stack
+auto_irqhandler_fixup = . + 2
+       jsr     __m68k_handle_int       |  process the IRQ
+       addql   #8,%sp                  |  pop parameters off stack
+
+ret_from_interrupt:
+       subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+       jeq     ret_from_last_interrupt
+2:     RESTORE_ALL
+
+       ALIGN
+ret_from_last_interrupt:
+       moveq   #(~ALLOWINT>>8)&0xff,%d0
+       andb    %sp@(PT_OFF_SR),%d0
+       jne     2b
+
+       /* check if we need to do software interrupts */
+       tstl    irq_stat+CPUSTAT_SOFTIRQ_PENDING
+       jeq     .Lret_from_exception
+       pea     ret_from_exception
+       jra     do_softirq
+
+/* Handler for user defined interrupt vectors */
+
+ENTRY(user_inthandler)
+       SAVE_ALL_INT
+       GET_CURRENT(%d0)
+       addqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+                                       |  put exception # in d0
+       bfextu  %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
+user_irqvec_fixup = . + 2
+       subw    #VEC_USER,%d0
+
+       movel   %sp,%sp@-
+       movel   %d0,%sp@-               |  put vector # on stack
+user_irqhandler_fixup = . + 2
+       jsr     __m68k_handle_int       |  process the IRQ
+       addql   #8,%sp                  |  pop parameters off stack
+
+       subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+       jeq     ret_from_last_interrupt
+       RESTORE_ALL
+
+/* Handler for uninitialized and spurious interrupts */
+
+ENTRY(bad_inthandler)
+       SAVE_ALL_INT
+       GET_CURRENT(%d0)
+       addqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+
+       movel   %sp,%sp@-
+       jsr     handle_badint
+       addql   #4,%sp
+
+       subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+       jeq     ret_from_last_interrupt
+       RESTORE_ALL
+
+
+ENTRY(sys_fork)
+       SAVE_SWITCH_STACK
+       pea     %sp@(SWITCH_STACK_SIZE)
+       jbsr    m68k_fork
+       addql   #4,%sp
+       RESTORE_SWITCH_STACK
+       rts
+
+ENTRY(sys_clone)
+       SAVE_SWITCH_STACK
+       pea     %sp@(SWITCH_STACK_SIZE)
+       jbsr    m68k_clone
+       addql   #4,%sp
+       RESTORE_SWITCH_STACK
+       rts
+
+ENTRY(sys_vfork)
+       SAVE_SWITCH_STACK
+       pea     %sp@(SWITCH_STACK_SIZE)
+       jbsr    m68k_vfork
+       addql   #4,%sp
+       RESTORE_SWITCH_STACK
+       rts
+
+ENTRY(sys_sigreturn)
+       SAVE_SWITCH_STACK
+       jbsr    do_sigreturn
+       RESTORE_SWITCH_STACK
+       rts
+
+ENTRY(sys_rt_sigreturn)
+       SAVE_SWITCH_STACK
+       jbsr    do_rt_sigreturn
+       RESTORE_SWITCH_STACK
+       rts
+
+resume:
+       /*
+        * Beware - when entering resume, prev (the current task) is
+        * in a0, next (the new task) is in a1,so don't change these
+        * registers until their contents are no longer needed.
+        */
+
+       /* save sr */
+       movew   %sr,%a0@(TASK_THREAD+THREAD_SR)
+
+       /* save fs (sfc,%dfc) (may be pointing to kernel memory) */
+       movec   %sfc,%d0
+       movew   %d0,%a0@(TASK_THREAD+THREAD_FS)
+
+       /* save usp */
+       /* it is better to use a movel here instead of a movew 8*) */
+       movec   %usp,%d0
+       movel   %d0,%a0@(TASK_THREAD+THREAD_USP)
+
+       /* save non-scratch registers on stack */
+       SAVE_SWITCH_STACK
+
+       /* save current kernel stack pointer */
+       movel   %sp,%a0@(TASK_THREAD+THREAD_KSP)
+
+       /* save floating point context */
+#ifndef CONFIG_M68KFPU_EMU_ONLY
+#ifdef CONFIG_M68KFPU_EMU
+       tstl    m68k_fputype
+       jeq     3f
+#endif
+       fsave   %a0@(TASK_THREAD+THREAD_FPSTATE)
+
+#if defined(CONFIG_M68060)
+#if !defined(CPU_M68060_ONLY)
+       btst    #3,m68k_cputype+3
+       beqs    1f
+#endif
+       /* The 060 FPU keeps status in bits 15-8 of the first longword */
+       tstb    %a0@(TASK_THREAD+THREAD_FPSTATE+2)
+       jeq     3f
+#if !defined(CPU_M68060_ONLY)
+       jra     2f
+#endif
+#endif /* CONFIG_M68060 */
+#if !defined(CPU_M68060_ONLY)
+1:     tstb    %a0@(TASK_THREAD+THREAD_FPSTATE)
+       jeq     3f
+#endif
+2:     fmovemx %fp0-%fp7,%a0@(TASK_THREAD+THREAD_FPREG)
+       fmoveml %fpcr/%fpsr/%fpiar,%a0@(TASK_THREAD+THREAD_FPCNTL)
+3:
+#endif /* CONFIG_M68KFPU_EMU_ONLY */
+       /* Return previous task in %d1 */
+       movel   %curptr,%d1
+
+       /* switch to new task (a1 contains new task) */
+       movel   %a1,%curptr
+
+       /* restore floating point context */
+#ifndef CONFIG_M68KFPU_EMU_ONLY
+#ifdef CONFIG_M68KFPU_EMU
+       tstl    m68k_fputype
+       jeq     4f
+#endif
+#if defined(CONFIG_M68060)
+#if !defined(CPU_M68060_ONLY)
+       btst    #3,m68k_cputype+3
+       beqs    1f
+#endif
+       /* The 060 FPU keeps status in bits 15-8 of the first longword */
+       tstb    %a1@(TASK_THREAD+THREAD_FPSTATE+2)
+       jeq     3f
+#if !defined(CPU_M68060_ONLY)
+       jra     2f
+#endif
+#endif /* CONFIG_M68060 */
+#if !defined(CPU_M68060_ONLY)
+1:     tstb    %a1@(TASK_THREAD+THREAD_FPSTATE)
+       jeq     3f
+#endif
+2:     fmovemx %a1@(TASK_THREAD+THREAD_FPREG),%fp0-%fp7
+       fmoveml %a1@(TASK_THREAD+THREAD_FPCNTL),%fpcr/%fpsr/%fpiar
+3:     frestore %a1@(TASK_THREAD+THREAD_FPSTATE)
+4:
+#endif /* CONFIG_M68KFPU_EMU_ONLY */
+
+       /* restore the kernel stack pointer */
+       movel   %a1@(TASK_THREAD+THREAD_KSP),%sp
+
+       /* restore non-scratch registers */
+       RESTORE_SWITCH_STACK
+
+       /* restore user stack pointer */
+       movel   %a1@(TASK_THREAD+THREAD_USP),%a0
+       movel   %a0,%usp
+
+       /* restore fs (sfc,%dfc) */
+       movew   %a1@(TASK_THREAD+THREAD_FS),%a0
+       movec   %a0,%sfc
+       movec   %a0,%dfc
+
+       /* restore status register */
+       movew   %a1@(TASK_THREAD+THREAD_SR),%sr
+
+       rts
+
+.data
+ALIGN
+sys_call_table:
+       .long sys_restart_syscall       /* 0 - old "setup()" system call, used for restarting */
+       .long sys_exit
+       .long sys_fork
+       .long sys_read
+       .long sys_write
+       .long sys_open          /* 5 */
+       .long sys_close
+       .long sys_waitpid
+       .long sys_creat
+       .long sys_link
+       .long sys_unlink        /* 10 */
+       .long sys_execve
+       .long sys_chdir
+       .long sys_time
+       .long sys_mknod
+       .long sys_chmod         /* 15 */
+       .long sys_chown16
+       .long sys_ni_syscall                            /* old break syscall holder */
+       .long sys_stat
+       .long sys_lseek
+       .long sys_getpid        /* 20 */
+       .long sys_mount
+       .long sys_oldumount
+       .long sys_setuid16
+       .long sys_getuid16
+       .long sys_stime         /* 25 */
+       .long sys_ptrace
+       .long sys_alarm
+       .long sys_fstat
+       .long sys_pause
+       .long sys_utime         /* 30 */
+       .long sys_ni_syscall                            /* old stty syscall holder */
+       .long sys_ni_syscall                            /* old gtty syscall holder */
+       .long sys_access
+       .long sys_nice
+       .long sys_ni_syscall    /* 35 */        /* old ftime syscall holder */
+       .long sys_sync
+       .long sys_kill
+       .long sys_rename
+       .long sys_mkdir
+       .long sys_rmdir         /* 40 */
+       .long sys_dup
+       .long sys_pipe
+       .long sys_times
+       .long sys_ni_syscall                            /* old prof syscall holder */
+       .long sys_brk           /* 45 */
+       .long sys_setgid16
+       .long sys_getgid16
+       .long sys_signal
+       .long sys_geteuid16
+       .long sys_getegid16     /* 50 */
+       .long sys_acct
+       .long sys_umount                                /* recycled never used phys() */
+       .long sys_ni_syscall                            /* old lock syscall holder */
+       .long sys_ioctl
+       .long sys_fcntl         /* 55 */
+       .long sys_ni_syscall                            /* old mpx syscall holder */
+       .long sys_setpgid
+       .long sys_ni_syscall                            /* old ulimit syscall holder */
+       .long sys_ni_syscall
+       .long sys_umask         /* 60 */
+       .long sys_chroot
+       .long sys_ustat
+       .long sys_dup2
+       .long sys_getppid
+       .long sys_getpgrp       /* 65 */
+       .long sys_setsid
+       .long sys_sigaction
+       .long sys_sgetmask
+       .long sys_ssetmask
+       .long sys_setreuid16    /* 70 */
+       .long sys_setregid16
+       .long sys_sigsuspend
+       .long sys_sigpending
+       .long sys_sethostname
+       .long sys_setrlimit     /* 75 */
+       .long sys_old_getrlimit
+       .long sys_getrusage
+       .long sys_gettimeofday
+       .long sys_settimeofday
+       .long sys_getgroups16   /* 80 */
+       .long sys_setgroups16
+       .long sys_old_select
+       .long sys_symlink
+       .long sys_lstat
+       .long sys_readlink      /* 85 */
+       .long sys_uselib
+       .long sys_swapon
+       .long sys_reboot
+       .long sys_old_readdir
+       .long sys_old_mmap      /* 90 */
+       .long sys_munmap
+       .long sys_truncate
+       .long sys_ftruncate
+       .long sys_fchmod
+       .long sys_fchown16      /* 95 */
+       .long sys_getpriority
+       .long sys_setpriority
+       .long sys_ni_syscall                            /* old profil syscall holder */
+       .long sys_statfs
+       .long sys_fstatfs       /* 100 */
+       .long sys_ni_syscall                            /* ioperm for i386 */
+       .long sys_socketcall
+       .long sys_syslog
+       .long sys_setitimer
+       .long sys_getitimer     /* 105 */
+       .long sys_newstat
+       .long sys_newlstat
+       .long sys_newfstat
+       .long sys_ni_syscall
+       .long sys_ni_syscall    /* 110 */       /* iopl for i386 */
+       .long sys_vhangup
+       .long sys_ni_syscall                            /* obsolete idle() syscall */
+       .long sys_ni_syscall                            /* vm86old for i386 */
+       .long sys_wait4
+       .long sys_swapoff       /* 115 */
+       .long sys_sysinfo
+       .long sys_ipc
+       .long sys_fsync
+       .long sys_sigreturn
+       .long sys_clone         /* 120 */
+       .long sys_setdomainname
+       .long sys_newuname
+       .long sys_cacheflush                            /* modify_ldt for i386 */
+       .long sys_adjtimex
+       .long sys_mprotect      /* 125 */
+       .long sys_sigprocmask
+       .long sys_ni_syscall            /* old "create_module" */
+       .long sys_init_module
+       .long sys_delete_module
+       .long sys_ni_syscall    /* 130 - old "get_kernel_syms" */
+       .long sys_quotactl
+       .long sys_getpgid
+       .long sys_fchdir
+       .long sys_bdflush
+       .long sys_sysfs         /* 135 */
+       .long sys_personality
+       .long sys_ni_syscall                            /* for afs_syscall */
+       .long sys_setfsuid16
+       .long sys_setfsgid16
+       .long sys_llseek        /* 140 */
+       .long sys_getdents
+       .long sys_select
+       .long sys_flock
+       .long sys_msync
+       .long sys_readv         /* 145 */
+       .long sys_writev
+       .long sys_getsid
+       .long sys_fdatasync
+       .long sys_sysctl
+       .long sys_mlock         /* 150 */
+       .long sys_munlock
+       .long sys_mlockall
+       .long sys_munlockall
+       .long sys_sched_setparam
+       .long sys_sched_getparam        /* 155 */
+       .long sys_sched_setscheduler
+       .long sys_sched_getscheduler
+       .long sys_sched_yield
+       .long sys_sched_get_priority_max
+       .long sys_sched_get_priority_min  /* 160 */
+       .long sys_sched_rr_get_interval
+       .long sys_nanosleep
+       .long sys_mremap
+       .long sys_setresuid16
+       .long sys_getresuid16   /* 165 */
+       .long sys_getpagesize
+       .long sys_ni_syscall            /* old sys_query_module */
+       .long sys_poll
+       .long sys_nfsservctl
+       .long sys_setresgid16   /* 170 */
+       .long sys_getresgid16
+       .long sys_prctl
+       .long sys_rt_sigreturn
+       .long sys_rt_sigaction
+       .long sys_rt_sigprocmask        /* 175 */
+       .long sys_rt_sigpending
+       .long sys_rt_sigtimedwait
+       .long sys_rt_sigqueueinfo
+       .long sys_rt_sigsuspend
+       .long sys_pread64       /* 180 */
+       .long sys_pwrite64
+       .long sys_lchown16;
+       .long sys_getcwd
+       .long sys_capget
+       .long sys_capset        /* 185 */
+       .long sys_sigaltstack
+       .long sys_sendfile
+       .long sys_ni_syscall                            /* streams1 */
+       .long sys_ni_syscall                            /* streams2 */
+       .long sys_vfork         /* 190 */
+       .long sys_getrlimit
+       .long sys_mmap2
+       .long sys_truncate64
+       .long sys_ftruncate64
+       .long sys_stat64        /* 195 */
+       .long sys_lstat64
+       .long sys_fstat64
+       .long sys_chown
+       .long sys_getuid
+       .long sys_getgid        /* 200 */
+       .long sys_geteuid
+       .long sys_getegid
+       .long sys_setreuid
+       .long sys_setregid
+       .long sys_getgroups     /* 205 */
+       .long sys_setgroups
+       .long sys_fchown
+       .long sys_setresuid
+       .long sys_getresuid
+       .long sys_setresgid     /* 210 */
+       .long sys_getresgid
+       .long sys_lchown
+       .long sys_setuid
+       .long sys_setgid
+       .long sys_setfsuid      /* 215 */
+       .long sys_setfsgid
+       .long sys_pivot_root
+       .long sys_ni_syscall
+       .long sys_ni_syscall
+       .long sys_getdents64    /* 220 */
+       .long sys_gettid
+       .long sys_tkill
+       .long sys_setxattr
+       .long sys_lsetxattr
+       .long sys_fsetxattr     /* 225 */
+       .long sys_getxattr
+       .long sys_lgetxattr
+       .long sys_fgetxattr
+       .long sys_listxattr
+       .long sys_llistxattr    /* 230 */
+       .long sys_flistxattr
+       .long sys_removexattr
+       .long sys_lremovexattr
+       .long sys_fremovexattr
+       .long sys_futex         /* 235 */
+       .long sys_sendfile64
+       .long sys_mincore
+       .long sys_madvise
+       .long sys_fcntl64
+       .long sys_readahead     /* 240 */
+       .long sys_io_setup
+       .long sys_io_destroy
+       .long sys_io_getevents
+       .long sys_io_submit
+       .long sys_io_cancel     /* 245 */
+       .long sys_fadvise64
+       .long sys_exit_group
+       .long sys_lookup_dcookie
+       .long sys_epoll_create
+       .long sys_epoll_ctl     /* 250 */
+       .long sys_epoll_wait
+       .long sys_remap_file_pages
+       .long sys_set_tid_address
+       .long sys_timer_create
+       .long sys_timer_settime /* 255 */
+       .long sys_timer_gettime
+       .long sys_timer_getoverrun
+       .long sys_timer_delete
+       .long sys_clock_settime
+       .long sys_clock_gettime /* 260 */
+       .long sys_clock_getres
+       .long sys_clock_nanosleep
+       .long sys_statfs64
+       .long sys_fstatfs64
+       .long sys_tgkill        /* 265 */
+       .long sys_utimes
+       .long sys_fadvise64_64
+       .long sys_mbind
+       .long sys_get_mempolicy
+       .long sys_set_mempolicy /* 270 */
+       .long sys_mq_open
+       .long sys_mq_unlink
+       .long sys_mq_timedsend
+       .long sys_mq_timedreceive
+       .long sys_mq_notify     /* 275 */
+       .long sys_mq_getsetattr
+       .long sys_waitid
+       .long sys_ni_syscall    /* for sys_vserver */
+       .long sys_add_key
+       .long sys_request_key   /* 280 */
+       .long sys_keyctl
+       .long sys_ioprio_set
+       .long sys_ioprio_get
+       .long sys_inotify_init
+       .long sys_inotify_add_watch     /* 285 */
+       .long sys_inotify_rm_watch
+       .long sys_migrate_pages
+       .long sys_openat
+       .long sys_mkdirat
+       .long sys_mknodat               /* 290 */
+       .long sys_fchownat
+       .long sys_futimesat
+       .long sys_fstatat64
+       .long sys_unlinkat
+       .long sys_renameat              /* 295 */
+       .long sys_linkat
+       .long sys_symlinkat
+       .long sys_readlinkat
+       .long sys_fchmodat
+       .long sys_faccessat             /* 300 */
+       .long sys_ni_syscall            /* Reserved for pselect6 */
+       .long sys_ni_syscall            /* Reserved for ppoll */
+       .long sys_unshare
+       .long sys_set_robust_list
+       .long sys_get_robust_list       /* 305 */
+       .long sys_splice
+       .long sys_sync_file_range
+       .long sys_tee
+       .long sys_vmsplice
+       .long sys_move_pages            /* 310 */
+       .long sys_sched_setaffinity
+       .long sys_sched_getaffinity
+       .long sys_kexec_load
+       .long sys_getcpu
+       .long sys_epoll_pwait           /* 315 */
+       .long sys_utimensat
+       .long sys_signalfd
+       .long sys_timerfd_create
+       .long sys_eventfd
+       .long sys_fallocate             /* 320 */
+       .long sys_timerfd_settime
+       .long sys_timerfd_gettime
+       .long sys_signalfd4
+       .long sys_eventfd2
+       .long sys_epoll_create1         /* 325 */
+       .long sys_dup3
+       .long sys_pipe2
+       .long sys_inotify_init1
+       .long sys_preadv
+       .long sys_pwritev               /* 330 */
+       .long sys_rt_tgsigqueueinfo
+       .long sys_perf_event_open
+       .long sys_get_thread_area
+       .long sys_set_thread_area
+       .long sys_atomic_cmpxchg_32     /* 335 */
+       .long sys_atomic_barrier
+       .long sys_fanotify_init
+       .long sys_fanotify_mark
+       .long sys_prlimit64
+
index d900e77e53632fd28b734245842d735a1e3323b7..4752c28ce0acefbb42a3f374db1636d425fcda07 100644 (file)
@@ -1,16 +1,5 @@
-#include <linux/module.h>
-
-asmlinkage long long __ashldi3 (long long, int);
-asmlinkage long long __ashrdi3 (long long, int);
-asmlinkage long long __lshrdi3 (long long, int);
-asmlinkage long long __muldi3 (long long, long long);
-
-/* The following are special because they're not called
-   explicitly (the C compiler generates them).  Fortunately,
-   their interface isn't gonna change any time soon now, so
-   it's OK to leave it out of version control.  */
-EXPORT_SYMBOL(__ashldi3);
-EXPORT_SYMBOL(__ashrdi3);
-EXPORT_SYMBOL(__lshrdi3);
-EXPORT_SYMBOL(__muldi3);
-
+#ifdef CONFIG_MMU
+#include "m68k_ksyms_mm.c"
+#else
+#include "m68k_ksyms_no.c"
+#endif
diff --git a/arch/m68k/kernel/m68k_ksyms_mm.c b/arch/m68k/kernel/m68k_ksyms_mm.c
new file mode 100644 (file)
index 0000000..d900e77
--- /dev/null
@@ -0,0 +1,16 @@
+#include <linux/module.h>
+
+asmlinkage long long __ashldi3 (long long, int);
+asmlinkage long long __ashrdi3 (long long, int);
+asmlinkage long long __lshrdi3 (long long, int);
+asmlinkage long long __muldi3 (long long, long long);
+
+/* The following are special because they're not called
+   explicitly (the C compiler generates them).  Fortunately,
+   their interface isn't gonna change any time soon now, so
+   it's OK to leave it out of version control.  */
+EXPORT_SYMBOL(__ashldi3);
+EXPORT_SYMBOL(__ashrdi3);
+EXPORT_SYMBOL(__lshrdi3);
+EXPORT_SYMBOL(__muldi3);
+
index cd6bcb1c957e925c55583a0249961f09e395b74d..7ea203ce6b1a35321ae4229cb14cd626c1417841 100644 (file)
@@ -1,155 +1,5 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file COPYING in the main directory of this archive
- * for more details.
- */
-
-#include <linux/moduleloader.h>
-#include <linux/elf.h>
-#include <linux/vmalloc.h>
-#include <linux/fs.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-
-#if 0
-#define DEBUGP printk
+#ifdef CONFIG_MMU
+#include "module_mm.c"
 #else
-#define DEBUGP(fmt...)
+#include "module_no.c"
 #endif
-
-#ifdef CONFIG_MODULES
-
-void *module_alloc(unsigned long size)
-{
-       if (size == 0)
-               return NULL;
-       return vmalloc(size);
-}
-
-
-/* Free memory returned from module_alloc */
-void module_free(struct module *mod, void *module_region)
-{
-       vfree(module_region);
-}
-
-/* We don't need anything special. */
-int module_frob_arch_sections(Elf_Ehdr *hdr,
-                             Elf_Shdr *sechdrs,
-                             char *secstrings,
-                             struct module *mod)
-{
-       return 0;
-}
-
-int apply_relocate(Elf32_Shdr *sechdrs,
-                  const char *strtab,
-                  unsigned int symindex,
-                  unsigned int relsec,
-                  struct module *me)
-{
-       unsigned int i;
-       Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
-       Elf32_Sym *sym;
-       uint32_t *location;
-
-       DEBUGP("Applying relocate section %u to %u\n", relsec,
-              sechdrs[relsec].sh_info);
-       for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
-               /* This is where to make the change */
-               location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
-                       + rel[i].r_offset;
-               /* This is the symbol it is referring to.  Note that all
-                  undefined symbols have been resolved.  */
-               sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
-                       + ELF32_R_SYM(rel[i].r_info);
-
-               switch (ELF32_R_TYPE(rel[i].r_info)) {
-               case R_68K_32:
-                       /* We add the value into the location given */
-                       *location += sym->st_value;
-                       break;
-               case R_68K_PC32:
-                       /* Add the value, subtract its postition */
-                       *location += sym->st_value - (uint32_t)location;
-                       break;
-               default:
-                       printk(KERN_ERR "module %s: Unknown relocation: %u\n",
-                              me->name, ELF32_R_TYPE(rel[i].r_info));
-                       return -ENOEXEC;
-               }
-       }
-       return 0;
-}
-
-int apply_relocate_add(Elf32_Shdr *sechdrs,
-                      const char *strtab,
-                      unsigned int symindex,
-                      unsigned int relsec,
-                      struct module *me)
-{
-       unsigned int i;
-       Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
-       Elf32_Sym *sym;
-       uint32_t *location;
-
-       DEBUGP("Applying relocate_add section %u to %u\n", relsec,
-              sechdrs[relsec].sh_info);
-       for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
-               /* This is where to make the change */
-               location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
-                       + rel[i].r_offset;
-               /* This is the symbol it is referring to.  Note that all
-                  undefined symbols have been resolved.  */
-               sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
-                       + ELF32_R_SYM(rel[i].r_info);
-
-               switch (ELF32_R_TYPE(rel[i].r_info)) {
-               case R_68K_32:
-                       /* We add the value into the location given */
-                       *location = rel[i].r_addend + sym->st_value;
-                       break;
-               case R_68K_PC32:
-                       /* Add the value, subtract its postition */
-                       *location = rel[i].r_addend + sym->st_value - (uint32_t)location;
-                       break;
-               default:
-                       printk(KERN_ERR "module %s: Unknown relocation: %u\n",
-                              me->name, ELF32_R_TYPE(rel[i].r_info));
-                       return -ENOEXEC;
-               }
-       }
-       return 0;
-}
-
-int module_finalize(const Elf_Ehdr *hdr,
-                   const Elf_Shdr *sechdrs,
-                   struct module *mod)
-{
-       module_fixup(mod, mod->arch.fixup_start, mod->arch.fixup_end);
-
-       return 0;
-}
-
-void module_arch_cleanup(struct module *mod)
-{
-}
-
-#endif /* CONFIG_MODULES */
-
-void module_fixup(struct module *mod, struct m68k_fixup_info *start,
-                 struct m68k_fixup_info *end)
-{
-       struct m68k_fixup_info *fixup;
-
-       for (fixup = start; fixup < end; fixup++) {
-               switch (fixup->type) {
-               case m68k_fixup_memoffset:
-                       *(u32 *)fixup->addr = m68k_memoffset;
-                       break;
-               case m68k_fixup_vnode_shift:
-                       *(u16 *)fixup->addr += m68k_virt_to_node_shift;
-                       break;
-               }
-       }
-}
diff --git a/arch/m68k/kernel/module_mm.c b/arch/m68k/kernel/module_mm.c
new file mode 100644 (file)
index 0000000..cd6bcb1
--- /dev/null
@@ -0,0 +1,155 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/moduleloader.h>
+#include <linux/elf.h>
+#include <linux/vmalloc.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+
+#if 0
+#define DEBUGP printk
+#else
+#define DEBUGP(fmt...)
+#endif
+
+#ifdef CONFIG_MODULES
+
+void *module_alloc(unsigned long size)
+{
+       if (size == 0)
+               return NULL;
+       return vmalloc(size);
+}
+
+
+/* Free memory returned from module_alloc */
+void module_free(struct module *mod, void *module_region)
+{
+       vfree(module_region);
+}
+
+/* We don't need anything special. */
+int module_frob_arch_sections(Elf_Ehdr *hdr,
+                             Elf_Shdr *sechdrs,
+                             char *secstrings,
+                             struct module *mod)
+{
+       return 0;
+}
+
+int apply_relocate(Elf32_Shdr *sechdrs,
+                  const char *strtab,
+                  unsigned int symindex,
+                  unsigned int relsec,
+                  struct module *me)
+{
+       unsigned int i;
+       Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
+       Elf32_Sym *sym;
+       uint32_t *location;
+
+       DEBUGP("Applying relocate section %u to %u\n", relsec,
+              sechdrs[relsec].sh_info);
+       for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
+               /* This is where to make the change */
+               location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+                       + rel[i].r_offset;
+               /* This is the symbol it is referring to.  Note that all
+                  undefined symbols have been resolved.  */
+               sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
+                       + ELF32_R_SYM(rel[i].r_info);
+
+               switch (ELF32_R_TYPE(rel[i].r_info)) {
+               case R_68K_32:
+                       /* We add the value into the location given */
+                       *location += sym->st_value;
+                       break;
+               case R_68K_PC32:
+                       /* Add the value, subtract its postition */
+                       *location += sym->st_value - (uint32_t)location;
+                       break;
+               default:
+                       printk(KERN_ERR "module %s: Unknown relocation: %u\n",
+                              me->name, ELF32_R_TYPE(rel[i].r_info));
+                       return -ENOEXEC;
+               }
+       }
+       return 0;
+}
+
+int apply_relocate_add(Elf32_Shdr *sechdrs,
+                      const char *strtab,
+                      unsigned int symindex,
+                      unsigned int relsec,
+                      struct module *me)
+{
+       unsigned int i;
+       Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
+       Elf32_Sym *sym;
+       uint32_t *location;
+
+       DEBUGP("Applying relocate_add section %u to %u\n", relsec,
+              sechdrs[relsec].sh_info);
+       for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
+               /* This is where to make the change */
+               location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+                       + rel[i].r_offset;
+               /* This is the symbol it is referring to.  Note that all
+                  undefined symbols have been resolved.  */
+               sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
+                       + ELF32_R_SYM(rel[i].r_info);
+
+               switch (ELF32_R_TYPE(rel[i].r_info)) {
+               case R_68K_32:
+                       /* We add the value into the location given */
+                       *location = rel[i].r_addend + sym->st_value;
+                       break;
+               case R_68K_PC32:
+                       /* Add the value, subtract its postition */
+                       *location = rel[i].r_addend + sym->st_value - (uint32_t)location;
+                       break;
+               default:
+                       printk(KERN_ERR "module %s: Unknown relocation: %u\n",
+                              me->name, ELF32_R_TYPE(rel[i].r_info));
+                       return -ENOEXEC;
+               }
+       }
+       return 0;
+}
+
+int module_finalize(const Elf_Ehdr *hdr,
+                   const Elf_Shdr *sechdrs,
+                   struct module *mod)
+{
+       module_fixup(mod, mod->arch.fixup_start, mod->arch.fixup_end);
+
+       return 0;
+}
+
+void module_arch_cleanup(struct module *mod)
+{
+}
+
+#endif /* CONFIG_MODULES */
+
+void module_fixup(struct module *mod, struct m68k_fixup_info *start,
+                 struct m68k_fixup_info *end)
+{
+       struct m68k_fixup_info *fixup;
+
+       for (fixup = start; fixup < end; fixup++) {
+               switch (fixup->type) {
+               case m68k_fixup_memoffset:
+                       *(u32 *)fixup->addr = m68k_memoffset;
+                       break;
+               case m68k_fixup_vnode_shift:
+                       *(u16 *)fixup->addr += m68k_virt_to_node_shift;
+                       break;
+               }
+       }
+}
index c2a1fc23dd758e69a49bb45d6e62247f4adf68ce..6cf4bd6e34f8c80641697de7dd8d37c5c9bc0c14 100644 (file)
@@ -1,354 +1,5 @@
-/*
- *  linux/arch/m68k/kernel/process.c
- *
- *  Copyright (C) 1995  Hamish Macdonald
- *
- *  68060 fixes by Jesper Skov
- */
-
-/*
- * This file handles the architecture-dependent parts of process handling..
- */
-
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/smp.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/reboot.h>
-#include <linux/init_task.h>
-#include <linux/mqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/traps.h>
-#include <asm/machdep.h>
-#include <asm/setup.h>
-#include <asm/pgtable.h>
-
-/*
- * Initial task/thread structure. Make this a per-architecture thing,
- * because different architectures tend to have different
- * alignment requirements and potentially different initial
- * setup.
- */
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-union thread_union init_thread_union __init_task_data
-       __attribute__((aligned(THREAD_SIZE))) =
-               { INIT_THREAD_INFO(init_task) };
-
-/* initial task structure */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
-
-asmlinkage void ret_from_fork(void);
-
-
-/*
- * Return saved PC from a blocked thread
- */
-unsigned long thread_saved_pc(struct task_struct *tsk)
-{
-       struct switch_stack *sw = (struct switch_stack *)tsk->thread.ksp;
-       /* Check whether the thread is blocked in resume() */
-       if (in_sched_functions(sw->retpc))
-               return ((unsigned long *)sw->a6)[1];
-       else
-               return sw->retpc;
-}
-
-/*
- * The idle loop on an m68k..
- */
-static void default_idle(void)
-{
-       if (!need_resched())
-#if defined(MACH_ATARI_ONLY)
-               /* block out HSYNC on the atari (falcon) */
-               __asm__("stop #0x2200" : : : "cc");
+#ifdef CONFIG_MMU
+#include "process_mm.c"
 #else
-               __asm__("stop #0x2000" : : : "cc");
+#include "process_no.c"
 #endif
-}
-
-void (*idle)(void) = default_idle;
-
-/*
- * The idle thread. There's no useful work to be
- * done, so just try to conserve power and have a
- * low exit latency (ie sit in a loop waiting for
- * somebody to say that they'd like to reschedule)
- */
-void cpu_idle(void)
-{
-       /* endless idle loop with no priority at all */
-       while (1) {
-               while (!need_resched())
-                       idle();
-               preempt_enable_no_resched();
-               schedule();
-               preempt_disable();
-       }
-}
-
-void machine_restart(char * __unused)
-{
-       if (mach_reset)
-               mach_reset();
-       for (;;);
-}
-
-void machine_halt(void)
-{
-       if (mach_halt)
-               mach_halt();
-       for (;;);
-}
-
-void machine_power_off(void)
-{
-       if (mach_power_off)
-               mach_power_off();
-       for (;;);
-}
-
-void (*pm_power_off)(void) = machine_power_off;
-EXPORT_SYMBOL(pm_power_off);
-
-void show_regs(struct pt_regs * regs)
-{
-       printk("\n");
-       printk("Format %02x  Vector: %04x  PC: %08lx  Status: %04x    %s\n",
-              regs->format, regs->vector, regs->pc, regs->sr, print_tainted());
-       printk("ORIG_D0: %08lx  D0: %08lx  A2: %08lx  A1: %08lx\n",
-              regs->orig_d0, regs->d0, regs->a2, regs->a1);
-       printk("A0: %08lx  D5: %08lx  D4: %08lx\n",
-              regs->a0, regs->d5, regs->d4);
-       printk("D3: %08lx  D2: %08lx  D1: %08lx\n",
-              regs->d3, regs->d2, regs->d1);
-       if (!(regs->sr & PS_S))
-               printk("USP: %08lx\n", rdusp());
-}
-
-/*
- * Create a kernel thread
- */
-int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
-{
-       int pid;
-       mm_segment_t fs;
-
-       fs = get_fs();
-       set_fs (KERNEL_DS);
-
-       {
-       register long retval __asm__ ("d0");
-       register long clone_arg __asm__ ("d1") = flags | CLONE_VM | CLONE_UNTRACED;
-
-       retval = __NR_clone;
-       __asm__ __volatile__
-         ("clrl %%d2\n\t"
-          "trap #0\n\t"                /* Linux/m68k system call */
-          "tstl %0\n\t"                /* child or parent */
-          "jne 1f\n\t"                 /* parent - jump */
-          "lea %%sp@(%c7),%6\n\t"      /* reload current */
-          "movel %6@,%6\n\t"
-          "movel %3,%%sp@-\n\t"        /* push argument */
-          "jsr %4@\n\t"                /* call fn */
-          "movel %0,%%d1\n\t"          /* pass exit value */
-          "movel %2,%%d0\n\t"          /* exit */
-          "trap #0\n"
-          "1:"
-          : "+d" (retval)
-          : "i" (__NR_clone), "i" (__NR_exit),
-            "r" (arg), "a" (fn), "d" (clone_arg), "r" (current),
-            "i" (-THREAD_SIZE)
-          : "d2");
-
-       pid = retval;
-       }
-
-       set_fs (fs);
-       return pid;
-}
-EXPORT_SYMBOL(kernel_thread);
-
-void flush_thread(void)
-{
-       unsigned long zero = 0;
-       set_fs(USER_DS);
-       current->thread.fs = __USER_DS;
-       if (!FPU_IS_EMU)
-               asm volatile (".chip 68k/68881\n\t"
-                             "frestore %0@\n\t"
-                             ".chip 68k" : : "a" (&zero));
-}
-
-/*
- * "m68k_fork()".. By the time we get here, the
- * non-volatile registers have also been saved on the
- * stack. We do some ugly pointer stuff here.. (see
- * also copy_thread)
- */
-
-asmlinkage int m68k_fork(struct pt_regs *regs)
-{
-       return do_fork(SIGCHLD, rdusp(), regs, 0, NULL, NULL);
-}
-
-asmlinkage int m68k_vfork(struct pt_regs *regs)
-{
-       return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0,
-                      NULL, NULL);
-}
-
-asmlinkage int m68k_clone(struct pt_regs *regs)
-{
-       unsigned long clone_flags;
-       unsigned long newsp;
-       int __user *parent_tidptr, *child_tidptr;
-
-       /* syscall2 puts clone_flags in d1 and usp in d2 */
-       clone_flags = regs->d1;
-       newsp = regs->d2;
-       parent_tidptr = (int __user *)regs->d3;
-       child_tidptr = (int __user *)regs->d4;
-       if (!newsp)
-               newsp = rdusp();
-       return do_fork(clone_flags, newsp, regs, 0,
-                      parent_tidptr, child_tidptr);
-}
-
-int copy_thread(unsigned long clone_flags, unsigned long usp,
-                unsigned long unused,
-                struct task_struct * p, struct pt_regs * regs)
-{
-       struct pt_regs * childregs;
-       struct switch_stack * childstack, *stack;
-       unsigned long *retp;
-
-       childregs = (struct pt_regs *) (task_stack_page(p) + THREAD_SIZE) - 1;
-
-       *childregs = *regs;
-       childregs->d0 = 0;
-
-       retp = ((unsigned long *) regs);
-       stack = ((struct switch_stack *) retp) - 1;
-
-       childstack = ((struct switch_stack *) childregs) - 1;
-       *childstack = *stack;
-       childstack->retpc = (unsigned long)ret_from_fork;
-
-       p->thread.usp = usp;
-       p->thread.ksp = (unsigned long)childstack;
-
-       if (clone_flags & CLONE_SETTLS)
-               task_thread_info(p)->tp_value = regs->d5;
-
-       /*
-        * Must save the current SFC/DFC value, NOT the value when
-        * the parent was last descheduled - RGH  10-08-96
-        */
-       p->thread.fs = get_fs().seg;
-
-       if (!FPU_IS_EMU) {
-               /* Copy the current fpu state */
-               asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory");
-
-               if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2])
-                 asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t"
-                               "fmoveml %/fpiar/%/fpcr/%/fpsr,%1"
-                               : : "m" (p->thread.fp[0]), "m" (p->thread.fpcntl[0])
-                               : "memory");
-               /* Restore the state in case the fpu was busy */
-               asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0]));
-       }
-
-       return 0;
-}
-
-/* Fill in the fpu structure for a core dump.  */
-
-int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu)
-{
-       char fpustate[216];
-
-       if (FPU_IS_EMU) {
-               int i;
-
-               memcpy(fpu->fpcntl, current->thread.fpcntl, 12);
-               memcpy(fpu->fpregs, current->thread.fp, 96);
-               /* Convert internal fpu reg representation
-                * into long double format
-                */
-               for (i = 0; i < 24; i += 3)
-                       fpu->fpregs[i] = ((fpu->fpregs[i] & 0xffff0000) << 15) |
-                                        ((fpu->fpregs[i] & 0x0000ffff) << 16);
-               return 1;
-       }
-
-       /* First dump the fpu context to avoid protocol violation.  */
-       asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory");
-       if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2])
-               return 0;
-
-       asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0"
-               :: "m" (fpu->fpcntl[0])
-               : "memory");
-       asm volatile ("fmovemx %/fp0-%/fp7,%0"
-               :: "m" (fpu->fpregs[0])
-               : "memory");
-       return 1;
-}
-EXPORT_SYMBOL(dump_fpu);
-
-/*
- * sys_execve() executes a new program.
- */
-asmlinkage int sys_execve(const char __user *name,
-                         const char __user *const __user *argv,
-                         const char __user *const __user *envp)
-{
-       int error;
-       char * filename;
-       struct pt_regs *regs = (struct pt_regs *) &name;
-
-       filename = getname(name);
-       error = PTR_ERR(filename);
-       if (IS_ERR(filename))
-               return error;
-       error = do_execve(filename, argv, envp, regs);
-       putname(filename);
-       return error;
-}
-
-unsigned long get_wchan(struct task_struct *p)
-{
-       unsigned long fp, pc;
-       unsigned long stack_page;
-       int count = 0;
-       if (!p || p == current || p->state == TASK_RUNNING)
-               return 0;
-
-       stack_page = (unsigned long)task_stack_page(p);
-       fp = ((struct switch_stack *)p->thread.ksp)->a6;
-       do {
-               if (fp < stack_page+sizeof(struct thread_info) ||
-                   fp >= 8184+stack_page)
-                       return 0;
-               pc = ((unsigned long *)fp)[1];
-               if (!in_sched_functions(pc))
-                       return pc;
-               fp = *(unsigned long *) fp;
-       } while (count++ < 16);
-       return 0;
-}
diff --git a/arch/m68k/kernel/process_mm.c b/arch/m68k/kernel/process_mm.c
new file mode 100644 (file)
index 0000000..c2a1fc2
--- /dev/null
@@ -0,0 +1,354 @@
+/*
+ *  linux/arch/m68k/kernel/process.c
+ *
+ *  Copyright (C) 1995  Hamish Macdonald
+ *
+ *  68060 fixes by Jesper Skov
+ */
+
+/*
+ * This file handles the architecture-dependent parts of process handling..
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/smp.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+#include <linux/reboot.h>
+#include <linux/init_task.h>
+#include <linux/mqueue.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/traps.h>
+#include <asm/machdep.h>
+#include <asm/setup.h>
+#include <asm/pgtable.h>
+
+/*
+ * Initial task/thread structure. Make this a per-architecture thing,
+ * because different architectures tend to have different
+ * alignment requirements and potentially different initial
+ * setup.
+ */
+static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
+static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
+union thread_union init_thread_union __init_task_data
+       __attribute__((aligned(THREAD_SIZE))) =
+               { INIT_THREAD_INFO(init_task) };
+
+/* initial task structure */
+struct task_struct init_task = INIT_TASK(init_task);
+
+EXPORT_SYMBOL(init_task);
+
+asmlinkage void ret_from_fork(void);
+
+
+/*
+ * Return saved PC from a blocked thread
+ */
+unsigned long thread_saved_pc(struct task_struct *tsk)
+{
+       struct switch_stack *sw = (struct switch_stack *)tsk->thread.ksp;
+       /* Check whether the thread is blocked in resume() */
+       if (in_sched_functions(sw->retpc))
+               return ((unsigned long *)sw->a6)[1];
+       else
+               return sw->retpc;
+}
+
+/*
+ * The idle loop on an m68k..
+ */
+static void default_idle(void)
+{
+       if (!need_resched())
+#if defined(MACH_ATARI_ONLY)
+               /* block out HSYNC on the atari (falcon) */
+               __asm__("stop #0x2200" : : : "cc");
+#else
+               __asm__("stop #0x2000" : : : "cc");
+#endif
+}
+
+void (*idle)(void) = default_idle;
+
+/*
+ * The idle thread. There's no useful work to be
+ * done, so just try to conserve power and have a
+ * low exit latency (ie sit in a loop waiting for
+ * somebody to say that they'd like to reschedule)
+ */
+void cpu_idle(void)
+{
+       /* endless idle loop with no priority at all */
+       while (1) {
+               while (!need_resched())
+                       idle();
+               preempt_enable_no_resched();
+               schedule();
+               preempt_disable();
+       }
+}
+
+void machine_restart(char * __unused)
+{
+       if (mach_reset)
+               mach_reset();
+       for (;;);
+}
+
+void machine_halt(void)
+{
+       if (mach_halt)
+               mach_halt();
+       for (;;);
+}
+
+void machine_power_off(void)
+{
+       if (mach_power_off)
+               mach_power_off();
+       for (;;);
+}
+
+void (*pm_power_off)(void) = machine_power_off;
+EXPORT_SYMBOL(pm_power_off);
+
+void show_regs(struct pt_regs * regs)
+{
+       printk("\n");
+       printk("Format %02x  Vector: %04x  PC: %08lx  Status: %04x    %s\n",
+              regs->format, regs->vector, regs->pc, regs->sr, print_tainted());
+       printk("ORIG_D0: %08lx  D0: %08lx  A2: %08lx  A1: %08lx\n",
+              regs->orig_d0, regs->d0, regs->a2, regs->a1);
+       printk("A0: %08lx  D5: %08lx  D4: %08lx\n",
+              regs->a0, regs->d5, regs->d4);
+       printk("D3: %08lx  D2: %08lx  D1: %08lx\n",
+              regs->d3, regs->d2, regs->d1);
+       if (!(regs->sr & PS_S))
+               printk("USP: %08lx\n", rdusp());
+}
+
+/*
+ * Create a kernel thread
+ */
+int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
+{
+       int pid;
+       mm_segment_t fs;
+
+       fs = get_fs();
+       set_fs (KERNEL_DS);
+
+       {
+       register long retval __asm__ ("d0");
+       register long clone_arg __asm__ ("d1") = flags | CLONE_VM | CLONE_UNTRACED;
+
+       retval = __NR_clone;
+       __asm__ __volatile__
+         ("clrl %%d2\n\t"
+          "trap #0\n\t"                /* Linux/m68k system call */
+          "tstl %0\n\t"                /* child or parent */
+          "jne 1f\n\t"                 /* parent - jump */
+          "lea %%sp@(%c7),%6\n\t"      /* reload current */
+          "movel %6@,%6\n\t"
+          "movel %3,%%sp@-\n\t"        /* push argument */
+          "jsr %4@\n\t"                /* call fn */
+          "movel %0,%%d1\n\t"          /* pass exit value */
+          "movel %2,%%d0\n\t"          /* exit */
+          "trap #0\n"
+          "1:"
+          : "+d" (retval)
+          : "i" (__NR_clone), "i" (__NR_exit),
+            "r" (arg), "a" (fn), "d" (clone_arg), "r" (current),
+            "i" (-THREAD_SIZE)
+          : "d2");
+
+       pid = retval;
+       }
+
+       set_fs (fs);
+       return pid;
+}
+EXPORT_SYMBOL(kernel_thread);
+
+void flush_thread(void)
+{
+       unsigned long zero = 0;
+       set_fs(USER_DS);
+       current->thread.fs = __USER_DS;
+       if (!FPU_IS_EMU)
+               asm volatile (".chip 68k/68881\n\t"
+                             "frestore %0@\n\t"
+                             ".chip 68k" : : "a" (&zero));
+}
+
+/*
+ * "m68k_fork()".. By the time we get here, the
+ * non-volatile registers have also been saved on the
+ * stack. We do some ugly pointer stuff here.. (see
+ * also copy_thread)
+ */
+
+asmlinkage int m68k_fork(struct pt_regs *regs)
+{
+       return do_fork(SIGCHLD, rdusp(), regs, 0, NULL, NULL);
+}
+
+asmlinkage int m68k_vfork(struct pt_regs *regs)
+{
+       return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0,
+                      NULL, NULL);
+}
+
+asmlinkage int m68k_clone(struct pt_regs *regs)
+{
+       unsigned long clone_flags;
+       unsigned long newsp;
+       int __user *parent_tidptr, *child_tidptr;
+
+       /* syscall2 puts clone_flags in d1 and usp in d2 */
+       clone_flags = regs->d1;
+       newsp = regs->d2;
+       parent_tidptr = (int __user *)regs->d3;
+       child_tidptr = (int __user *)regs->d4;
+       if (!newsp)
+               newsp = rdusp();
+       return do_fork(clone_flags, newsp, regs, 0,
+                      parent_tidptr, child_tidptr);
+}
+
+int copy_thread(unsigned long clone_flags, unsigned long usp,
+                unsigned long unused,
+                struct task_struct * p, struct pt_regs * regs)
+{
+       struct pt_regs * childregs;
+       struct switch_stack * childstack, *stack;
+       unsigned long *retp;
+
+       childregs = (struct pt_regs *) (task_stack_page(p) + THREAD_SIZE) - 1;
+
+       *childregs = *regs;
+       childregs->d0 = 0;
+
+       retp = ((unsigned long *) regs);
+       stack = ((struct switch_stack *) retp) - 1;
+
+       childstack = ((struct switch_stack *) childregs) - 1;
+       *childstack = *stack;
+       childstack->retpc = (unsigned long)ret_from_fork;
+
+       p->thread.usp = usp;
+       p->thread.ksp = (unsigned long)childstack;
+
+       if (clone_flags & CLONE_SETTLS)
+               task_thread_info(p)->tp_value = regs->d5;
+
+       /*
+        * Must save the current SFC/DFC value, NOT the value when
+        * the parent was last descheduled - RGH  10-08-96
+        */
+       p->thread.fs = get_fs().seg;
+
+       if (!FPU_IS_EMU) {
+               /* Copy the current fpu state */
+               asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory");
+
+               if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2])
+                 asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t"
+                               "fmoveml %/fpiar/%/fpcr/%/fpsr,%1"
+                               : : "m" (p->thread.fp[0]), "m" (p->thread.fpcntl[0])
+                               : "memory");
+               /* Restore the state in case the fpu was busy */
+               asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0]));
+       }
+
+       return 0;
+}
+
+/* Fill in the fpu structure for a core dump.  */
+
+int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu)
+{
+       char fpustate[216];
+
+       if (FPU_IS_EMU) {
+               int i;
+
+               memcpy(fpu->fpcntl, current->thread.fpcntl, 12);
+               memcpy(fpu->fpregs, current->thread.fp, 96);
+               /* Convert internal fpu reg representation
+                * into long double format
+                */
+               for (i = 0; i < 24; i += 3)
+                       fpu->fpregs[i] = ((fpu->fpregs[i] & 0xffff0000) << 15) |
+                                        ((fpu->fpregs[i] & 0x0000ffff) << 16);
+               return 1;
+       }
+
+       /* First dump the fpu context to avoid protocol violation.  */
+       asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory");
+       if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2])
+               return 0;
+
+       asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0"
+               :: "m" (fpu->fpcntl[0])
+               : "memory");
+       asm volatile ("fmovemx %/fp0-%/fp7,%0"
+               :: "m" (fpu->fpregs[0])
+               : "memory");
+       return 1;
+}
+EXPORT_SYMBOL(dump_fpu);
+
+/*
+ * sys_execve() executes a new program.
+ */
+asmlinkage int sys_execve(const char __user *name,
+                         const char __user *const __user *argv,
+                         const char __user *const __user *envp)
+{
+       int error;
+       char * filename;
+       struct pt_regs *regs = (struct pt_regs *) &name;
+
+       filename = getname(name);
+       error = PTR_ERR(filename);
+       if (IS_ERR(filename))
+               return error;
+       error = do_execve(filename, argv, envp, regs);
+       putname(filename);
+       return error;
+}
+
+unsigned long get_wchan(struct task_struct *p)
+{
+       unsigned long fp, pc;
+       unsigned long stack_page;
+       int count = 0;
+       if (!p || p == current || p->state == TASK_RUNNING)
+               return 0;
+
+       stack_page = (unsigned long)task_stack_page(p);
+       fp = ((struct switch_stack *)p->thread.ksp)->a6;
+       do {
+               if (fp < stack_page+sizeof(struct thread_info) ||
+                   fp >= 8184+stack_page)
+                       return 0;
+               pc = ((unsigned long *)fp)[1];
+               if (!in_sched_functions(pc))
+                       return pc;
+               fp = *(unsigned long *) fp;
+       } while (count++ < 16);
+       return 0;
+}
index 0b252683cefb21a3d057987833a22ce1ea8b17be..07a417550e9421156be8636088a3ea3ce7c265c0 100644 (file)
@@ -1,277 +1,5 @@
-/*
- *  linux/arch/m68k/kernel/ptrace.c
- *
- *  Copyright (C) 1994 by Hamish Macdonald
- *  Taken from linux/kernel/ptrace.c and modified for M680x0.
- *  linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License.  See the file COPYING in the main directory of
- * this archive for more details.
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/signal.h>
-
-#include <asm/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/processor.h>
-
-/*
- * does not yet catch signals sent when the child dies.
- * in exit.c or in signal.c.
- */
-
-/* determines which bits in the SR the user has access to. */
-/* 1 = access 0 = no access */
-#define SR_MASK 0x001f
-
-/* sets the trace bits. */
-#define TRACE_BITS 0xC000
-#define T1_BIT 0x8000
-#define T0_BIT 0x4000
-
-/* Find the stack offset for a register, relative to thread.esp0. */
-#define PT_REG(reg)    ((long)&((struct pt_regs *)0)->reg)
-#define SW_REG(reg)    ((long)&((struct switch_stack *)0)->reg \
-                        - sizeof(struct switch_stack))
-/* Mapping from PT_xxx to the stack offset at which the register is
-   saved.  Notice that usp has no stack-slot and needs to be treated
-   specially (see get_reg/put_reg below). */
-static const int regoff[] = {
-       [0]     = PT_REG(d1),
-       [1]     = PT_REG(d2),
-       [2]     = PT_REG(d3),
-       [3]     = PT_REG(d4),
-       [4]     = PT_REG(d5),
-       [5]     = SW_REG(d6),
-       [6]     = SW_REG(d7),
-       [7]     = PT_REG(a0),
-       [8]     = PT_REG(a1),
-       [9]     = PT_REG(a2),
-       [10]    = SW_REG(a3),
-       [11]    = SW_REG(a4),
-       [12]    = SW_REG(a5),
-       [13]    = SW_REG(a6),
-       [14]    = PT_REG(d0),
-       [15]    = -1,
-       [16]    = PT_REG(orig_d0),
-       [17]    = PT_REG(sr),
-       [18]    = PT_REG(pc),
-};
-
-/*
- * Get contents of register REGNO in task TASK.
- */
-static inline long get_reg(struct task_struct *task, int regno)
-{
-       unsigned long *addr;
-
-       if (regno == PT_USP)
-               addr = &task->thread.usp;
-       else if (regno < ARRAY_SIZE(regoff))
-               addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
-       else
-               return 0;
-       /* Need to take stkadj into account. */
-       if (regno == PT_SR || regno == PT_PC) {
-               long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj));
-               addr = (unsigned long *) ((unsigned long)addr + stkadj);
-               /* The sr is actually a 16 bit register.  */
-               if (regno == PT_SR)
-                       return *(unsigned short *)addr;
-       }
-       return *addr;
-}
-
-/*
- * Write contents of register REGNO in task TASK.
- */
-static inline int put_reg(struct task_struct *task, int regno,
-                         unsigned long data)
-{
-       unsigned long *addr;
-
-       if (regno == PT_USP)
-               addr = &task->thread.usp;
-       else if (regno < ARRAY_SIZE(regoff))
-               addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
-       else
-               return -1;
-       /* Need to take stkadj into account. */
-       if (regno == PT_SR || regno == PT_PC) {
-               long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj));
-               addr = (unsigned long *) ((unsigned long)addr + stkadj);
-               /* The sr is actually a 16 bit register.  */
-               if (regno == PT_SR) {
-                       *(unsigned short *)addr = data;
-                       return 0;
-               }
-       }
-       *addr = data;
-       return 0;
-}
-
-/*
- * Make sure the single step bit is not set.
- */
-static inline void singlestep_disable(struct task_struct *child)
-{
-       unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
-       put_reg(child, PT_SR, tmp);
-       clear_tsk_thread_flag(child, TIF_DELAYED_TRACE);
-}
-
-/*
- * Called by kernel/ptrace.c when detaching..
- */
-void ptrace_disable(struct task_struct *child)
-{
-       singlestep_disable(child);
-}
-
-void user_enable_single_step(struct task_struct *child)
-{
-       unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
-       put_reg(child, PT_SR, tmp | T1_BIT);
-       set_tsk_thread_flag(child, TIF_DELAYED_TRACE);
-}
-
-void user_enable_block_step(struct task_struct *child)
-{
-       unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
-       put_reg(child, PT_SR, tmp | T0_BIT);
-}
-
-void user_disable_single_step(struct task_struct *child)
-{
-       singlestep_disable(child);
-}
-
-long arch_ptrace(struct task_struct *child, long request,
-                unsigned long addr, unsigned long data)
-{
-       unsigned long tmp;
-       int i, ret = 0;
-       int regno = addr >> 2; /* temporary hack. */
-       unsigned long __user *datap = (unsigned long __user *) data;
-
-       switch (request) {
-       /* read the word at location addr in the USER area. */
-       case PTRACE_PEEKUSR:
-               if (addr & 3)
-                       goto out_eio;
-
-               if (regno >= 0 && regno < 19) {
-                       tmp = get_reg(child, regno);
-               } else if (regno >= 21 && regno < 49) {
-                       tmp = child->thread.fp[regno - 21];
-                       /* Convert internal fpu reg representation
-                        * into long double format
-                        */
-                       if (FPU_IS_EMU && (regno < 45) && !(regno % 3))
-                               tmp = ((tmp & 0xffff0000) << 15) |
-                                     ((tmp & 0x0000ffff) << 16);
-               } else
-                       goto out_eio;
-               ret = put_user(tmp, datap);
-               break;
-
-       case PTRACE_POKEUSR:
-       /* write the word at location addr in the USER area */
-               if (addr & 3)
-                       goto out_eio;
-
-               if (regno == PT_SR) {
-                       data &= SR_MASK;
-                       data |= get_reg(child, PT_SR) & ~SR_MASK;
-               }
-               if (regno >= 0 && regno < 19) {
-                       if (put_reg(child, regno, data))
-                               goto out_eio;
-               } else if (regno >= 21 && regno < 48) {
-                       /* Convert long double format
-                        * into internal fpu reg representation
-                        */
-                       if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) {
-                               data <<= 15;
-                               data = (data & 0xffff0000) |
-                                      ((data & 0x0000ffff) >> 1);
-                       }
-                       child->thread.fp[regno - 21] = data;
-               } else
-                       goto out_eio;
-               break;
-
-       case PTRACE_GETREGS:    /* Get all gp regs from the child. */
-               for (i = 0; i < 19; i++) {
-                       tmp = get_reg(child, i);
-                       ret = put_user(tmp, datap);
-                       if (ret)
-                               break;
-                       datap++;
-               }
-               break;
-
-       case PTRACE_SETREGS:    /* Set all gp regs in the child. */
-               for (i = 0; i < 19; i++) {
-                       ret = get_user(tmp, datap);
-                       if (ret)
-                               break;
-                       if (i == PT_SR) {
-                               tmp &= SR_MASK;
-                               tmp |= get_reg(child, PT_SR) & ~SR_MASK;
-                       }
-                       put_reg(child, i, tmp);
-                       datap++;
-               }
-               break;
-
-       case PTRACE_GETFPREGS:  /* Get the child FPU state. */
-               if (copy_to_user(datap, &child->thread.fp,
-                                sizeof(struct user_m68kfp_struct)))
-                       ret = -EFAULT;
-               break;
-
-       case PTRACE_SETFPREGS:  /* Set the child FPU state. */
-               if (copy_from_user(&child->thread.fp, datap,
-                                  sizeof(struct user_m68kfp_struct)))
-                       ret = -EFAULT;
-               break;
-
-       case PTRACE_GET_THREAD_AREA:
-               ret = put_user(task_thread_info(child)->tp_value, datap);
-               break;
-
-       default:
-               ret = ptrace_request(child, request, addr, data);
-               break;
-       }
-
-       return ret;
-out_eio:
-       return -EIO;
-}
-
-asmlinkage void syscall_trace(void)
-{
-       ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
-                                ? 0x80 : 0));
-       /*
-        * this isn't the same as continuing with a signal, but it will do
-        * for normal use.  strace only continues with a signal if the
-        * stopping signal is not SIGTRAP.  -brl
-        */
-       if (current->exit_code) {
-               send_sig(current->exit_code, current, 1);
-               current->exit_code = 0;
-       }
-}
+#ifdef CONFIG_MMU
+#include "ptrace_mm.c"
+#else
+#include "ptrace_no.c"
+#endif
diff --git a/arch/m68k/kernel/ptrace_mm.c b/arch/m68k/kernel/ptrace_mm.c
new file mode 100644 (file)
index 0000000..0b25268
--- /dev/null
@@ -0,0 +1,277 @@
+/*
+ *  linux/arch/m68k/kernel/ptrace.c
+ *
+ *  Copyright (C) 1994 by Hamish Macdonald
+ *  Taken from linux/kernel/ptrace.c and modified for M680x0.
+ *  linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of
+ * this archive for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+#include <linux/signal.h>
+
+#include <asm/uaccess.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+
+/*
+ * does not yet catch signals sent when the child dies.
+ * in exit.c or in signal.c.
+ */
+
+/* determines which bits in the SR the user has access to. */
+/* 1 = access 0 = no access */
+#define SR_MASK 0x001f
+
+/* sets the trace bits. */
+#define TRACE_BITS 0xC000
+#define T1_BIT 0x8000
+#define T0_BIT 0x4000
+
+/* Find the stack offset for a register, relative to thread.esp0. */
+#define PT_REG(reg)    ((long)&((struct pt_regs *)0)->reg)
+#define SW_REG(reg)    ((long)&((struct switch_stack *)0)->reg \
+                        - sizeof(struct switch_stack))
+/* Mapping from PT_xxx to the stack offset at which the register is
+   saved.  Notice that usp has no stack-slot and needs to be treated
+   specially (see get_reg/put_reg below). */
+static const int regoff[] = {
+       [0]     = PT_REG(d1),
+       [1]     = PT_REG(d2),
+       [2]     = PT_REG(d3),
+       [3]     = PT_REG(d4),
+       [4]     = PT_REG(d5),
+       [5]     = SW_REG(d6),
+       [6]     = SW_REG(d7),
+       [7]     = PT_REG(a0),
+       [8]     = PT_REG(a1),
+       [9]     = PT_REG(a2),
+       [10]    = SW_REG(a3),
+       [11]    = SW_REG(a4),
+       [12]    = SW_REG(a5),
+       [13]    = SW_REG(a6),
+       [14]    = PT_REG(d0),
+       [15]    = -1,
+       [16]    = PT_REG(orig_d0),
+       [17]    = PT_REG(sr),
+       [18]    = PT_REG(pc),
+};
+
+/*
+ * Get contents of register REGNO in task TASK.
+ */
+static inline long get_reg(struct task_struct *task, int regno)
+{
+       unsigned long *addr;
+
+       if (regno == PT_USP)
+               addr = &task->thread.usp;
+       else if (regno < ARRAY_SIZE(regoff))
+               addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
+       else
+               return 0;
+       /* Need to take stkadj into account. */
+       if (regno == PT_SR || regno == PT_PC) {
+               long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj));
+               addr = (unsigned long *) ((unsigned long)addr + stkadj);
+               /* The sr is actually a 16 bit register.  */
+               if (regno == PT_SR)
+                       return *(unsigned short *)addr;
+       }
+       return *addr;
+}
+
+/*
+ * Write contents of register REGNO in task TASK.
+ */
+static inline int put_reg(struct task_struct *task, int regno,
+                         unsigned long data)
+{
+       unsigned long *addr;
+
+       if (regno == PT_USP)
+               addr = &task->thread.usp;
+       else if (regno < ARRAY_SIZE(regoff))
+               addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
+       else
+               return -1;
+       /* Need to take stkadj into account. */
+       if (regno == PT_SR || regno == PT_PC) {
+               long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj));
+               addr = (unsigned long *) ((unsigned long)addr + stkadj);
+               /* The sr is actually a 16 bit register.  */
+               if (regno == PT_SR) {
+                       *(unsigned short *)addr = data;
+                       return 0;
+               }
+       }
+       *addr = data;
+       return 0;
+}
+
+/*
+ * Make sure the single step bit is not set.
+ */
+static inline void singlestep_disable(struct task_struct *child)
+{
+       unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
+       put_reg(child, PT_SR, tmp);
+       clear_tsk_thread_flag(child, TIF_DELAYED_TRACE);
+}
+
+/*
+ * Called by kernel/ptrace.c when detaching..
+ */
+void ptrace_disable(struct task_struct *child)
+{
+       singlestep_disable(child);
+}
+
+void user_enable_single_step(struct task_struct *child)
+{
+       unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
+       put_reg(child, PT_SR, tmp | T1_BIT);
+       set_tsk_thread_flag(child, TIF_DELAYED_TRACE);
+}
+
+void user_enable_block_step(struct task_struct *child)
+{
+       unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
+       put_reg(child, PT_SR, tmp | T0_BIT);
+}
+
+void user_disable_single_step(struct task_struct *child)
+{
+       singlestep_disable(child);
+}
+
+long arch_ptrace(struct task_struct *child, long request,
+                unsigned long addr, unsigned long data)
+{
+       unsigned long tmp;
+       int i, ret = 0;
+       int regno = addr >> 2; /* temporary hack. */
+       unsigned long __user *datap = (unsigned long __user *) data;
+
+       switch (request) {
+       /* read the word at location addr in the USER area. */
+       case PTRACE_PEEKUSR:
+               if (addr & 3)
+                       goto out_eio;
+
+               if (regno >= 0 && regno < 19) {
+                       tmp = get_reg(child, regno);
+               } else if (regno >= 21 && regno < 49) {
+                       tmp = child->thread.fp[regno - 21];
+                       /* Convert internal fpu reg representation
+                        * into long double format
+                        */
+                       if (FPU_IS_EMU && (regno < 45) && !(regno % 3))
+                               tmp = ((tmp & 0xffff0000) << 15) |
+                                     ((tmp & 0x0000ffff) << 16);
+               } else
+                       goto out_eio;
+               ret = put_user(tmp, datap);
+               break;
+
+       case PTRACE_POKEUSR:
+       /* write the word at location addr in the USER area */
+               if (addr & 3)
+                       goto out_eio;
+
+               if (regno == PT_SR) {
+                       data &= SR_MASK;
+                       data |= get_reg(child, PT_SR) & ~SR_MASK;
+               }
+               if (regno >= 0 && regno < 19) {
+                       if (put_reg(child, regno, data))
+                               goto out_eio;
+               } else if (regno >= 21 && regno < 48) {
+                       /* Convert long double format
+                        * into internal fpu reg representation
+                        */
+                       if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) {
+                               data <<= 15;
+                               data = (data & 0xffff0000) |
+                                      ((data & 0x0000ffff) >> 1);
+                       }
+                       child->thread.fp[regno - 21] = data;
+               } else
+                       goto out_eio;
+               break;
+
+       case PTRACE_GETREGS:    /* Get all gp regs from the child. */
+               for (i = 0; i < 19; i++) {
+                       tmp = get_reg(child, i);
+                       ret = put_user(tmp, datap);
+                       if (ret)
+                               break;
+                       datap++;
+               }
+               break;
+
+       case PTRACE_SETREGS:    /* Set all gp regs in the child. */
+               for (i = 0; i < 19; i++) {
+                       ret = get_user(tmp, datap);
+                       if (ret)
+                               break;
+                       if (i == PT_SR) {
+                               tmp &= SR_MASK;
+                               tmp |= get_reg(child, PT_SR) & ~SR_MASK;
+                       }
+                       put_reg(child, i, tmp);
+                       datap++;
+               }
+               break;
+
+       case PTRACE_GETFPREGS:  /* Get the child FPU state. */
+               if (copy_to_user(datap, &child->thread.fp,
+                                sizeof(struct user_m68kfp_struct)))
+                       ret = -EFAULT;
+               break;
+
+       case PTRACE_SETFPREGS:  /* Set the child FPU state. */
+               if (copy_from_user(&child->thread.fp, datap,
+                                  sizeof(struct user_m68kfp_struct)))
+                       ret = -EFAULT;
+               break;
+
+       case PTRACE_GET_THREAD_AREA:
+               ret = put_user(task_thread_info(child)->tp_value, datap);
+               break;
+
+       default:
+               ret = ptrace_request(child, request, addr, data);
+               break;
+       }
+
+       return ret;
+out_eio:
+       return -EIO;
+}
+
+asmlinkage void syscall_trace(void)
+{
+       ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+                                ? 0x80 : 0));
+       /*
+        * this isn't the same as continuing with a signal, but it will do
+        * for normal use.  strace only continues with a signal if the
+        * stopping signal is not SIGTRAP.  -brl
+        */
+       if (current->exit_code) {
+               send_sig(current->exit_code, current, 1);
+               current->exit_code = 0;
+       }
+}
index 334d83640376762b058a7a4010e2878fffe21439..4bf129f1d2e2f83a7c9a86d5c5d129a9ba03b382 100644 (file)
@@ -1,533 +1,5 @@
-/*
- *  linux/arch/m68k/kernel/setup.c
- *
- *  Copyright (C) 1995  Hamish Macdonald
- */
-
-/*
- * This file handles the architecture-dependent parts of system setup
- */
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/fs.h>
-#include <linux/console.h>
-#include <linux/genhd.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/module.h>
-#include <linux/initrd.h>
-
-#include <asm/bootinfo.h>
-#include <asm/sections.h>
-#include <asm/setup.h>
-#include <asm/fpu.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/machdep.h>
-#ifdef CONFIG_AMIGA
-#include <asm/amigahw.h>
-#endif
-#ifdef CONFIG_ATARI
-#include <asm/atarihw.h>
-#include <asm/atari_stram.h>
-#endif
-#ifdef CONFIG_SUN3X
-#include <asm/dvma.h>
-#endif
-#include <asm/natfeat.h>
-
-#if !FPSTATESIZE || !NR_IRQS
-#warning No CPU/platform type selected, your kernel will not work!
-#warning Are you building an allnoconfig kernel?
-#endif
-
-unsigned long m68k_machtype;
-EXPORT_SYMBOL(m68k_machtype);
-unsigned long m68k_cputype;
-EXPORT_SYMBOL(m68k_cputype);
-unsigned long m68k_fputype;
-unsigned long m68k_mmutype;
-EXPORT_SYMBOL(m68k_mmutype);
-#ifdef CONFIG_VME
-unsigned long vme_brdtype;
-EXPORT_SYMBOL(vme_brdtype);
-#endif
-
-int m68k_is040or060;
-EXPORT_SYMBOL(m68k_is040or060);
-
-extern unsigned long availmem;
-
-int m68k_num_memory;
-EXPORT_SYMBOL(m68k_num_memory);
-int m68k_realnum_memory;
-EXPORT_SYMBOL(m68k_realnum_memory);
-unsigned long m68k_memoffset;
-struct mem_info m68k_memory[NUM_MEMINFO];
-EXPORT_SYMBOL(m68k_memory);
-
-struct mem_info m68k_ramdisk;
-
-static char m68k_command_line[CL_SIZE];
-
-void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
-/* machine dependent irq functions */
-void (*mach_init_IRQ) (void) __initdata = NULL;
-void (*mach_get_model) (char *model);
-void (*mach_get_hardware_list) (struct seq_file *m);
-/* machine dependent timer functions */
-unsigned long (*mach_gettimeoffset) (void);
-int (*mach_hwclk) (int, struct rtc_time*);
-EXPORT_SYMBOL(mach_hwclk);
-int (*mach_set_clock_mmss) (unsigned long);
-unsigned int (*mach_get_ss)(void);
-int (*mach_get_rtc_pll)(struct rtc_pll_info *);
-int (*mach_set_rtc_pll)(struct rtc_pll_info *);
-EXPORT_SYMBOL(mach_get_ss);
-EXPORT_SYMBOL(mach_get_rtc_pll);
-EXPORT_SYMBOL(mach_set_rtc_pll);
-void (*mach_reset)( void );
-void (*mach_halt)( void );
-void (*mach_power_off)( void );
-long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
-#ifdef CONFIG_HEARTBEAT
-void (*mach_heartbeat) (int);
-EXPORT_SYMBOL(mach_heartbeat);
-#endif
-#ifdef CONFIG_M68K_L2_CACHE
-void (*mach_l2_flush) (int);
-#endif
-#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
-void (*mach_beep)(unsigned int, unsigned int);
-EXPORT_SYMBOL(mach_beep);
-#endif
-#if defined(CONFIG_ISA) && defined(MULTI_ISA)
-int isa_type;
-int isa_sex;
-EXPORT_SYMBOL(isa_type);
-EXPORT_SYMBOL(isa_sex);
-#endif
-
-extern int amiga_parse_bootinfo(const struct bi_record *);
-extern int atari_parse_bootinfo(const struct bi_record *);
-extern int mac_parse_bootinfo(const struct bi_record *);
-extern int q40_parse_bootinfo(const struct bi_record *);
-extern int bvme6000_parse_bootinfo(const struct bi_record *);
-extern int mvme16x_parse_bootinfo(const struct bi_record *);
-extern int mvme147_parse_bootinfo(const struct bi_record *);
-extern int hp300_parse_bootinfo(const struct bi_record *);
-extern int apollo_parse_bootinfo(const struct bi_record *);
-
-extern void config_amiga(void);
-extern void config_atari(void);
-extern void config_mac(void);
-extern void config_sun3(void);
-extern void config_apollo(void);
-extern void config_mvme147(void);
-extern void config_mvme16x(void);
-extern void config_bvme6000(void);
-extern void config_hp300(void);
-extern void config_q40(void);
-extern void config_sun3x(void);
-
-#define MASK_256K 0xfffc0000
-
-extern void paging_init(void);
-
-static void __init m68k_parse_bootinfo(const struct bi_record *record)
-{
-       while (record->tag != BI_LAST) {
-               int unknown = 0;
-               const unsigned long *data = record->data;
-
-               switch (record->tag) {
-               case BI_MACHTYPE:
-               case BI_CPUTYPE:
-               case BI_FPUTYPE:
-               case BI_MMUTYPE:
-                       /* Already set up by head.S */
-                       break;
-
-               case BI_MEMCHUNK:
-                       if (m68k_num_memory < NUM_MEMINFO) {
-                               m68k_memory[m68k_num_memory].addr = data[0];
-                               m68k_memory[m68k_num_memory].size = data[1];
-                               m68k_num_memory++;
-                       } else
-                               printk("m68k_parse_bootinfo: too many memory chunks\n");
-                       break;
-
-               case BI_RAMDISK:
-                       m68k_ramdisk.addr = data[0];
-                       m68k_ramdisk.size = data[1];
-                       break;
-
-               case BI_COMMAND_LINE:
-                       strlcpy(m68k_command_line, (const char *)data,
-                               sizeof(m68k_command_line));
-                       break;
-
-               default:
-                       if (MACH_IS_AMIGA)
-                               unknown = amiga_parse_bootinfo(record);
-                       else if (MACH_IS_ATARI)
-                               unknown = atari_parse_bootinfo(record);
-                       else if (MACH_IS_MAC)
-                               unknown = mac_parse_bootinfo(record);
-                       else if (MACH_IS_Q40)
-                               unknown = q40_parse_bootinfo(record);
-                       else if (MACH_IS_BVME6000)
-                               unknown = bvme6000_parse_bootinfo(record);
-                       else if (MACH_IS_MVME16x)
-                               unknown = mvme16x_parse_bootinfo(record);
-                       else if (MACH_IS_MVME147)
-                               unknown = mvme147_parse_bootinfo(record);
-                       else if (MACH_IS_HP300)
-                               unknown = hp300_parse_bootinfo(record);
-                       else if (MACH_IS_APOLLO)
-                               unknown = apollo_parse_bootinfo(record);
-                       else
-                               unknown = 1;
-               }
-               if (unknown)
-                       printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n",
-                              record->tag);
-               record = (struct bi_record *)((unsigned long)record +
-                                             record->size);
-       }
-
-       m68k_realnum_memory = m68k_num_memory;
-#ifdef CONFIG_SINGLE_MEMORY_CHUNK
-       if (m68k_num_memory > 1) {
-               printk("Ignoring last %i chunks of physical memory\n",
-                      (m68k_num_memory - 1));
-               m68k_num_memory = 1;
-       }
-#endif
-}
-
-void __init setup_arch(char **cmdline_p)
-{
-       int i;
-
-       /* The bootinfo is located right after the kernel bss */
-       m68k_parse_bootinfo((const struct bi_record *)_end);
-
-       if (CPU_IS_040)
-               m68k_is040or060 = 4;
-       else if (CPU_IS_060)
-               m68k_is040or060 = 6;
-
-       /* FIXME: m68k_fputype is passed in by Penguin booter, which can
-        * be confused by software FPU emulation. BEWARE.
-        * We should really do our own FPU check at startup.
-        * [what do we do with buggy 68LC040s? if we have problems
-        *  with them, we should add a test to check_bugs() below] */
-#ifndef CONFIG_M68KFPU_EMU_ONLY
-       /* clear the fpu if we have one */
-       if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
-               volatile int zero = 0;
-               asm volatile ("frestore %0" : : "m" (zero));
-       }
-#endif
-
-       if (CPU_IS_060) {
-               u32 pcr;
-
-               asm (".chip 68060; movec %%pcr,%0; .chip 68k"
-                    : "=d" (pcr));
-               if (((pcr >> 8) & 0xff) <= 5) {
-                       printk("Enabling workaround for errata I14\n");
-                       asm (".chip 68060; movec %0,%%pcr; .chip 68k"
-                            : : "d" (pcr | 0x20));
-               }
-       }
-
-       init_mm.start_code = PAGE_OFFSET;
-       init_mm.end_code = (unsigned long)_etext;
-       init_mm.end_data = (unsigned long)_edata;
-       init_mm.brk = (unsigned long)_end;
-
-       *cmdline_p = m68k_command_line;
-       memcpy(boot_command_line, *cmdline_p, CL_SIZE);
-
-       parse_early_param();
-
-#ifdef CONFIG_DUMMY_CONSOLE
-       conswitchp = &dummy_con;
-#endif
-
-       switch (m68k_machtype) {
-#ifdef CONFIG_AMIGA
-       case MACH_AMIGA:
-               config_amiga();
-               break;
-#endif
-#ifdef CONFIG_ATARI
-       case MACH_ATARI:
-               config_atari();
-               break;
-#endif
-#ifdef CONFIG_MAC
-       case MACH_MAC:
-               config_mac();
-               break;
-#endif
-#ifdef CONFIG_SUN3
-       case MACH_SUN3:
-               config_sun3();
-               break;
-#endif
-#ifdef CONFIG_APOLLO
-       case MACH_APOLLO:
-               config_apollo();
-               break;
-#endif
-#ifdef CONFIG_MVME147
-       case MACH_MVME147:
-               config_mvme147();
-               break;
-#endif
-#ifdef CONFIG_MVME16x
-       case MACH_MVME16x:
-               config_mvme16x();
-               break;
-#endif
-#ifdef CONFIG_BVME6000
-       case MACH_BVME6000:
-               config_bvme6000();
-               break;
-#endif
-#ifdef CONFIG_HP300
-       case MACH_HP300:
-               config_hp300();
-               break;
-#endif
-#ifdef CONFIG_Q40
-       case MACH_Q40:
-               config_q40();
-               break;
-#endif
-#ifdef CONFIG_SUN3X
-       case MACH_SUN3X:
-               config_sun3x();
-               break;
-#endif
-       default:
-               panic("No configuration setup");
-       }
-
-#ifdef CONFIG_NATFEAT
-       nf_init();
-#endif
-
-       paging_init();
-
-#ifndef CONFIG_SUN3
-       for (i = 1; i < m68k_num_memory; i++)
-               free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
-                                 m68k_memory[i].size);
-#ifdef CONFIG_BLK_DEV_INITRD
-       if (m68k_ramdisk.size) {
-               reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
-                                    m68k_ramdisk.addr, m68k_ramdisk.size,
-                                    BOOTMEM_DEFAULT);
-               initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
-               initrd_end = initrd_start + m68k_ramdisk.size;
-               printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
-       }
-#endif
-
-#ifdef CONFIG_ATARI
-       if (MACH_IS_ATARI)
-               atari_stram_reserve_pages((void *)availmem);
-#endif
-#ifdef CONFIG_SUN3X
-       if (MACH_IS_SUN3X) {
-               dvma_init();
-       }
-#endif
-
-#endif /* !CONFIG_SUN3 */
-
-/* set ISA defs early as possible */
-#if defined(CONFIG_ISA) && defined(MULTI_ISA)
-       if (MACH_IS_Q40) {
-               isa_type = ISA_TYPE_Q40;
-               isa_sex = 0;
-       }
-#ifdef CONFIG_AMIGA_PCMCIA
-       if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
-               isa_type = ISA_TYPE_AG;
-               isa_sex = 1;
-       }
-#endif
-#endif
-}
-
-static int show_cpuinfo(struct seq_file *m, void *v)
-{
-       const char *cpu, *mmu, *fpu;
-       unsigned long clockfreq, clockfactor;
-
-#define LOOP_CYCLES_68020      (8)
-#define LOOP_CYCLES_68030      (8)
-#define LOOP_CYCLES_68040      (3)
-#define LOOP_CYCLES_68060      (1)
-
-       if (CPU_IS_020) {
-               cpu = "68020";
-               clockfactor = LOOP_CYCLES_68020;
-       } else if (CPU_IS_030) {
-               cpu = "68030";
-               clockfactor = LOOP_CYCLES_68030;
-       } else if (CPU_IS_040) {
-               cpu = "68040";
-               clockfactor = LOOP_CYCLES_68040;
-       } else if (CPU_IS_060) {
-               cpu = "68060";
-               clockfactor = LOOP_CYCLES_68060;
-       } else {
-               cpu = "680x0";
-               clockfactor = 0;
-       }
-
-#ifdef CONFIG_M68KFPU_EMU_ONLY
-       fpu = "none(soft float)";
+#ifdef CONFIG_MMU
+#include "setup_mm.c"
 #else
-       if (m68k_fputype & FPU_68881)
-               fpu = "68881";
-       else if (m68k_fputype & FPU_68882)
-               fpu = "68882";
-       else if (m68k_fputype & FPU_68040)
-               fpu = "68040";
-       else if (m68k_fputype & FPU_68060)
-               fpu = "68060";
-       else if (m68k_fputype & FPU_SUNFPA)
-               fpu = "Sun FPA";
-       else
-               fpu = "none";
-#endif
-
-       if (m68k_mmutype & MMU_68851)
-               mmu = "68851";
-       else if (m68k_mmutype & MMU_68030)
-               mmu = "68030";
-       else if (m68k_mmutype & MMU_68040)
-               mmu = "68040";
-       else if (m68k_mmutype & MMU_68060)
-               mmu = "68060";
-       else if (m68k_mmutype & MMU_SUN3)
-               mmu = "Sun-3";
-       else if (m68k_mmutype & MMU_APOLLO)
-               mmu = "Apollo";
-       else
-               mmu = "unknown";
-
-       clockfreq = loops_per_jiffy * HZ * clockfactor;
-
-       seq_printf(m, "CPU:\t\t%s\n"
-                  "MMU:\t\t%s\n"
-                  "FPU:\t\t%s\n"
-                  "Clocking:\t%lu.%1luMHz\n"
-                  "BogoMips:\t%lu.%02lu\n"
-                  "Calibration:\t%lu loops\n",
-                  cpu, mmu, fpu,
-                  clockfreq/1000000,(clockfreq/100000)%10,
-                  loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
-                  loops_per_jiffy);
-       return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
-       return *pos < 1 ? (void *)1 : NULL;
-}
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
-       ++*pos;
-       return NULL;
-}
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-const struct seq_operations cpuinfo_op = {
-       .start  = c_start,
-       .next   = c_next,
-       .stop   = c_stop,
-       .show   = show_cpuinfo,
-};
-
-#ifdef CONFIG_PROC_HARDWARE
-static int hardware_proc_show(struct seq_file *m, void *v)
-{
-       char model[80];
-       unsigned long mem;
-       int i;
-
-       if (mach_get_model)
-               mach_get_model(model);
-       else
-               strcpy(model, "Unknown m68k");
-
-       seq_printf(m, "Model:\t\t%s\n", model);
-       for (mem = 0, i = 0; i < m68k_num_memory; i++)
-               mem += m68k_memory[i].size;
-       seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
-
-       if (mach_get_hardware_list)
-               mach_get_hardware_list(m);
-
-       return 0;
-}
-
-static int hardware_proc_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, hardware_proc_show, NULL);
-}
-
-static const struct file_operations hardware_proc_fops = {
-       .open           = hardware_proc_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
-
-static int __init proc_hardware_init(void)
-{
-       proc_create("hardware", 0, NULL, &hardware_proc_fops);
-       return 0;
-}
-module_init(proc_hardware_init);
+#include "setup_no.c"
 #endif
-
-void check_bugs(void)
-{
-#ifndef CONFIG_M68KFPU_EMU
-       if (m68k_fputype == 0) {
-               printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
-                       "WHICH IS REQUIRED BY LINUX/M68K ***\n");
-               printk(KERN_EMERG "Upgrade your hardware or join the FPU "
-                       "emulation project\n");
-               panic("no FPU");
-       }
-#endif /* !CONFIG_M68KFPU_EMU */
-}
-
-#ifdef CONFIG_ADB
-static int __init adb_probe_sync_enable (char *str) {
-       extern int __adb_probe_sync;
-       __adb_probe_sync = 1;
-       return 1;
-}
-
-__setup("adb_sync", adb_probe_sync_enable);
-#endif /* CONFIG_ADB */
diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
new file mode 100644 (file)
index 0000000..334d836
--- /dev/null
@@ -0,0 +1,533 @@
+/*
+ *  linux/arch/m68k/kernel/setup.c
+ *
+ *  Copyright (C) 1995  Hamish Macdonald
+ */
+
+/*
+ * This file handles the architecture-dependent parts of system setup
+ */
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/fs.h>
+#include <linux/console.h>
+#include <linux/genhd.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/module.h>
+#include <linux/initrd.h>
+
+#include <asm/bootinfo.h>
+#include <asm/sections.h>
+#include <asm/setup.h>
+#include <asm/fpu.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#ifdef CONFIG_AMIGA
+#include <asm/amigahw.h>
+#endif
+#ifdef CONFIG_ATARI
+#include <asm/atarihw.h>
+#include <asm/atari_stram.h>
+#endif
+#ifdef CONFIG_SUN3X
+#include <asm/dvma.h>
+#endif
+#include <asm/natfeat.h>
+
+#if !FPSTATESIZE || !NR_IRQS
+#warning No CPU/platform type selected, your kernel will not work!
+#warning Are you building an allnoconfig kernel?
+#endif
+
+unsigned long m68k_machtype;
+EXPORT_SYMBOL(m68k_machtype);
+unsigned long m68k_cputype;
+EXPORT_SYMBOL(m68k_cputype);
+unsigned long m68k_fputype;
+unsigned long m68k_mmutype;
+EXPORT_SYMBOL(m68k_mmutype);
+#ifdef CONFIG_VME
+unsigned long vme_brdtype;
+EXPORT_SYMBOL(vme_brdtype);
+#endif
+
+int m68k_is040or060;
+EXPORT_SYMBOL(m68k_is040or060);
+
+extern unsigned long availmem;
+
+int m68k_num_memory;
+EXPORT_SYMBOL(m68k_num_memory);
+int m68k_realnum_memory;
+EXPORT_SYMBOL(m68k_realnum_memory);
+unsigned long m68k_memoffset;
+struct mem_info m68k_memory[NUM_MEMINFO];
+EXPORT_SYMBOL(m68k_memory);
+
+struct mem_info m68k_ramdisk;
+
+static char m68k_command_line[CL_SIZE];
+
+void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
+/* machine dependent irq functions */
+void (*mach_init_IRQ) (void) __initdata = NULL;
+void (*mach_get_model) (char *model);
+void (*mach_get_hardware_list) (struct seq_file *m);
+/* machine dependent timer functions */
+unsigned long (*mach_gettimeoffset) (void);
+int (*mach_hwclk) (int, struct rtc_time*);
+EXPORT_SYMBOL(mach_hwclk);
+int (*mach_set_clock_mmss) (unsigned long);
+unsigned int (*mach_get_ss)(void);
+int (*mach_get_rtc_pll)(struct rtc_pll_info *);
+int (*mach_set_rtc_pll)(struct rtc_pll_info *);
+EXPORT_SYMBOL(mach_get_ss);
+EXPORT_SYMBOL(mach_get_rtc_pll);
+EXPORT_SYMBOL(mach_set_rtc_pll);
+void (*mach_reset)( void );
+void (*mach_halt)( void );
+void (*mach_power_off)( void );
+long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
+#ifdef CONFIG_HEARTBEAT
+void (*mach_heartbeat) (int);
+EXPORT_SYMBOL(mach_heartbeat);
+#endif
+#ifdef CONFIG_M68K_L2_CACHE
+void (*mach_l2_flush) (int);
+#endif
+#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
+void (*mach_beep)(unsigned int, unsigned int);
+EXPORT_SYMBOL(mach_beep);
+#endif
+#if defined(CONFIG_ISA) && defined(MULTI_ISA)
+int isa_type;
+int isa_sex;
+EXPORT_SYMBOL(isa_type);
+EXPORT_SYMBOL(isa_sex);
+#endif
+
+extern int amiga_parse_bootinfo(const struct bi_record *);
+extern int atari_parse_bootinfo(const struct bi_record *);
+extern int mac_parse_bootinfo(const struct bi_record *);
+extern int q40_parse_bootinfo(const struct bi_record *);
+extern int bvme6000_parse_bootinfo(const struct bi_record *);
+extern int mvme16x_parse_bootinfo(const struct bi_record *);
+extern int mvme147_parse_bootinfo(const struct bi_record *);
+extern int hp300_parse_bootinfo(const struct bi_record *);
+extern int apollo_parse_bootinfo(const struct bi_record *);
+
+extern void config_amiga(void);
+extern void config_atari(void);
+extern void config_mac(void);
+extern void config_sun3(void);
+extern void config_apollo(void);
+extern void config_mvme147(void);
+extern void config_mvme16x(void);
+extern void config_bvme6000(void);
+extern void config_hp300(void);
+extern void config_q40(void);
+extern void config_sun3x(void);
+
+#define MASK_256K 0xfffc0000
+
+extern void paging_init(void);
+
+static void __init m68k_parse_bootinfo(const struct bi_record *record)
+{
+       while (record->tag != BI_LAST) {
+               int unknown = 0;
+               const unsigned long *data = record->data;
+
+               switch (record->tag) {
+               case BI_MACHTYPE:
+               case BI_CPUTYPE:
+               case BI_FPUTYPE:
+               case BI_MMUTYPE:
+                       /* Already set up by head.S */
+                       break;
+
+               case BI_MEMCHUNK:
+                       if (m68k_num_memory < NUM_MEMINFO) {
+                               m68k_memory[m68k_num_memory].addr = data[0];
+                               m68k_memory[m68k_num_memory].size = data[1];
+                               m68k_num_memory++;
+                       } else
+                               printk("m68k_parse_bootinfo: too many memory chunks\n");
+                       break;
+
+               case BI_RAMDISK:
+                       m68k_ramdisk.addr = data[0];
+                       m68k_ramdisk.size = data[1];
+                       break;
+
+               case BI_COMMAND_LINE:
+                       strlcpy(m68k_command_line, (const char *)data,
+                               sizeof(m68k_command_line));
+                       break;
+
+               default:
+                       if (MACH_IS_AMIGA)
+                               unknown = amiga_parse_bootinfo(record);
+                       else if (MACH_IS_ATARI)
+                               unknown = atari_parse_bootinfo(record);
+                       else if (MACH_IS_MAC)
+                               unknown = mac_parse_bootinfo(record);
+                       else if (MACH_IS_Q40)
+                               unknown = q40_parse_bootinfo(record);
+                       else if (MACH_IS_BVME6000)
+                               unknown = bvme6000_parse_bootinfo(record);
+                       else if (MACH_IS_MVME16x)
+                               unknown = mvme16x_parse_bootinfo(record);
+                       else if (MACH_IS_MVME147)
+                               unknown = mvme147_parse_bootinfo(record);
+                       else if (MACH_IS_HP300)
+                               unknown = hp300_parse_bootinfo(record);
+                       else if (MACH_IS_APOLLO)
+                               unknown = apollo_parse_bootinfo(record);
+                       else
+                               unknown = 1;
+               }
+               if (unknown)
+                       printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n",
+                              record->tag);
+               record = (struct bi_record *)((unsigned long)record +
+                                             record->size);
+       }
+
+       m68k_realnum_memory = m68k_num_memory;
+#ifdef CONFIG_SINGLE_MEMORY_CHUNK
+       if (m68k_num_memory > 1) {
+               printk("Ignoring last %i chunks of physical memory\n",
+                      (m68k_num_memory - 1));
+               m68k_num_memory = 1;
+       }
+#endif
+}
+
+void __init setup_arch(char **cmdline_p)
+{
+       int i;
+
+       /* The bootinfo is located right after the kernel bss */
+       m68k_parse_bootinfo((const struct bi_record *)_end);
+
+       if (CPU_IS_040)
+               m68k_is040or060 = 4;
+       else if (CPU_IS_060)
+               m68k_is040or060 = 6;
+
+       /* FIXME: m68k_fputype is passed in by Penguin booter, which can
+        * be confused by software FPU emulation. BEWARE.
+        * We should really do our own FPU check at startup.
+        * [what do we do with buggy 68LC040s? if we have problems
+        *  with them, we should add a test to check_bugs() below] */
+#ifndef CONFIG_M68KFPU_EMU_ONLY
+       /* clear the fpu if we have one */
+       if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
+               volatile int zero = 0;
+               asm volatile ("frestore %0" : : "m" (zero));
+       }
+#endif
+
+       if (CPU_IS_060) {
+               u32 pcr;
+
+               asm (".chip 68060; movec %%pcr,%0; .chip 68k"
+                    : "=d" (pcr));
+               if (((pcr >> 8) & 0xff) <= 5) {
+                       printk("Enabling workaround for errata I14\n");
+                       asm (".chip 68060; movec %0,%%pcr; .chip 68k"
+                            : : "d" (pcr | 0x20));
+               }
+       }
+
+       init_mm.start_code = PAGE_OFFSET;
+       init_mm.end_code = (unsigned long)_etext;
+       init_mm.end_data = (unsigned long)_edata;
+       init_mm.brk = (unsigned long)_end;
+
+       *cmdline_p = m68k_command_line;
+       memcpy(boot_command_line, *cmdline_p, CL_SIZE);
+
+       parse_early_param();
+
+#ifdef CONFIG_DUMMY_CONSOLE
+       conswitchp = &dummy_con;
+#endif
+
+       switch (m68k_machtype) {
+#ifdef CONFIG_AMIGA
+       case MACH_AMIGA:
+               config_amiga();
+               break;
+#endif
+#ifdef CONFIG_ATARI
+       case MACH_ATARI:
+               config_atari();
+               break;
+#endif
+#ifdef CONFIG_MAC
+       case MACH_MAC:
+               config_mac();
+               break;
+#endif
+#ifdef CONFIG_SUN3
+       case MACH_SUN3:
+               config_sun3();
+               break;
+#endif
+#ifdef CONFIG_APOLLO
+       case MACH_APOLLO:
+               config_apollo();
+               break;
+#endif
+#ifdef CONFIG_MVME147
+       case MACH_MVME147:
+               config_mvme147();
+               break;
+#endif
+#ifdef CONFIG_MVME16x
+       case MACH_MVME16x:
+               config_mvme16x();
+               break;
+#endif
+#ifdef CONFIG_BVME6000
+       case MACH_BVME6000:
+               config_bvme6000();
+               break;
+#endif
+#ifdef CONFIG_HP300
+       case MACH_HP300:
+               config_hp300();
+               break;
+#endif
+#ifdef CONFIG_Q40
+       case MACH_Q40:
+               config_q40();
+               break;
+#endif
+#ifdef CONFIG_SUN3X
+       case MACH_SUN3X:
+               config_sun3x();
+               break;
+#endif
+       default:
+               panic("No configuration setup");
+       }
+
+#ifdef CONFIG_NATFEAT
+       nf_init();
+#endif
+
+       paging_init();
+
+#ifndef CONFIG_SUN3
+       for (i = 1; i < m68k_num_memory; i++)
+               free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
+                                 m68k_memory[i].size);
+#ifdef CONFIG_BLK_DEV_INITRD
+       if (m68k_ramdisk.size) {
+               reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
+                                    m68k_ramdisk.addr, m68k_ramdisk.size,
+                                    BOOTMEM_DEFAULT);
+               initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
+               initrd_end = initrd_start + m68k_ramdisk.size;
+               printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
+       }
+#endif
+
+#ifdef CONFIG_ATARI
+       if (MACH_IS_ATARI)
+               atari_stram_reserve_pages((void *)availmem);
+#endif
+#ifdef CONFIG_SUN3X
+       if (MACH_IS_SUN3X) {
+               dvma_init();
+       }
+#endif
+
+#endif /* !CONFIG_SUN3 */
+
+/* set ISA defs early as possible */
+#if defined(CONFIG_ISA) && defined(MULTI_ISA)
+       if (MACH_IS_Q40) {
+               isa_type = ISA_TYPE_Q40;
+               isa_sex = 0;
+       }
+#ifdef CONFIG_AMIGA_PCMCIA
+       if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
+               isa_type = ISA_TYPE_AG;
+               isa_sex = 1;
+       }
+#endif
+#endif
+}
+
+static int show_cpuinfo(struct seq_file *m, void *v)
+{
+       const char *cpu, *mmu, *fpu;
+       unsigned long clockfreq, clockfactor;
+
+#define LOOP_CYCLES_68020      (8)
+#define LOOP_CYCLES_68030      (8)
+#define LOOP_CYCLES_68040      (3)
+#define LOOP_CYCLES_68060      (1)
+
+       if (CPU_IS_020) {
+               cpu = "68020";
+               clockfactor = LOOP_CYCLES_68020;
+       } else if (CPU_IS_030) {
+               cpu = "68030";
+               clockfactor = LOOP_CYCLES_68030;
+       } else if (CPU_IS_040) {
+               cpu = "68040";
+               clockfactor = LOOP_CYCLES_68040;
+       } else if (CPU_IS_060) {
+               cpu = "68060";
+               clockfactor = LOOP_CYCLES_68060;
+       } else {
+               cpu = "680x0";
+               clockfactor = 0;
+       }
+
+#ifdef CONFIG_M68KFPU_EMU_ONLY
+       fpu = "none(soft float)";
+#else
+       if (m68k_fputype & FPU_68881)
+               fpu = "68881";
+       else if (m68k_fputype & FPU_68882)
+               fpu = "68882";
+       else if (m68k_fputype & FPU_68040)
+               fpu = "68040";
+       else if (m68k_fputype & FPU_68060)
+               fpu = "68060";
+       else if (m68k_fputype & FPU_SUNFPA)
+               fpu = "Sun FPA";
+       else
+               fpu = "none";
+#endif
+
+       if (m68k_mmutype & MMU_68851)
+               mmu = "68851";
+       else if (m68k_mmutype & MMU_68030)
+               mmu = "68030";
+       else if (m68k_mmutype & MMU_68040)
+               mmu = "68040";
+       else if (m68k_mmutype & MMU_68060)
+               mmu = "68060";
+       else if (m68k_mmutype & MMU_SUN3)
+               mmu = "Sun-3";
+       else if (m68k_mmutype & MMU_APOLLO)
+               mmu = "Apollo";
+       else
+               mmu = "unknown";
+
+       clockfreq = loops_per_jiffy * HZ * clockfactor;
+
+       seq_printf(m, "CPU:\t\t%s\n"
+                  "MMU:\t\t%s\n"
+                  "FPU:\t\t%s\n"
+                  "Clocking:\t%lu.%1luMHz\n"
+                  "BogoMips:\t%lu.%02lu\n"
+                  "Calibration:\t%lu loops\n",
+                  cpu, mmu, fpu,
+                  clockfreq/1000000,(clockfreq/100000)%10,
+                  loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
+                  loops_per_jiffy);
+       return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+       return *pos < 1 ? (void *)1 : NULL;
+}
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
+{
+       ++*pos;
+       return NULL;
+}
+static void c_stop(struct seq_file *m, void *v)
+{
+}
+const struct seq_operations cpuinfo_op = {
+       .start  = c_start,
+       .next   = c_next,
+       .stop   = c_stop,
+       .show   = show_cpuinfo,
+};
+
+#ifdef CONFIG_PROC_HARDWARE
+static int hardware_proc_show(struct seq_file *m, void *v)
+{
+       char model[80];
+       unsigned long mem;
+       int i;
+
+       if (mach_get_model)
+               mach_get_model(model);
+       else
+               strcpy(model, "Unknown m68k");
+
+       seq_printf(m, "Model:\t\t%s\n", model);
+       for (mem = 0, i = 0; i < m68k_num_memory; i++)
+               mem += m68k_memory[i].size;
+       seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
+
+       if (mach_get_hardware_list)
+               mach_get_hardware_list(m);
+
+       return 0;
+}
+
+static int hardware_proc_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, hardware_proc_show, NULL);
+}
+
+static const struct file_operations hardware_proc_fops = {
+       .open           = hardware_proc_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+};
+
+static int __init proc_hardware_init(void)
+{
+       proc_create("hardware", 0, NULL, &hardware_proc_fops);
+       return 0;
+}
+module_init(proc_hardware_init);
+#endif
+
+void check_bugs(void)
+{
+#ifndef CONFIG_M68KFPU_EMU
+       if (m68k_fputype == 0) {
+               printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
+                       "WHICH IS REQUIRED BY LINUX/M68K ***\n");
+               printk(KERN_EMERG "Upgrade your hardware or join the FPU "
+                       "emulation project\n");
+               panic("no FPU");
+       }
+#endif /* !CONFIG_M68KFPU_EMU */
+}
+
+#ifdef CONFIG_ADB
+static int __init adb_probe_sync_enable (char *str) {
+       extern int __adb_probe_sync;
+       __adb_probe_sync = 1;
+       return 1;
+}
+
+__setup("adb_sync", adb_probe_sync_enable);
+#endif /* CONFIG_ADB */
index a0afc239304eb9eb40fcbcbffdf21c005cced264..2e25713e2eadf104dd7fcb9c6c2024c4302fbc97 100644 (file)
-/*
- *  linux/arch/m68k/kernel/signal.c
- *
- *  Copyright (C) 1991, 1992  Linus Torvalds
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file COPYING in the main directory of this archive
- * for more details.
- */
-
-/*
- * Linux/m68k support by Hamish Macdonald
- *
- * 68060 fixes by Jesper Skov
- *
- * 1997-12-01  Modified for POSIX.1b signals by Andreas Schwab
- *
- * mathemu support by Roman Zippel
- *  (Note: fpstate in the signal context is completely ignored for the emulator
- *         and the internal floating point format is put on stack)
- */
-
-/*
- * ++roman (07/09/96): implemented signal stacks (specially for tosemu on
- * Atari :-) Current limitation: Only one sigstack can be active at one time.
- * If a second signal with SA_ONSTACK set arrives while working on a sigstack,
- * SA_ONSTACK is ignored. This behaviour avoids lots of trouble with nested
- * signal handlers!
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/syscalls.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/ptrace.h>
-#include <linux/unistd.h>
-#include <linux/stddef.h>
-#include <linux/highuid.h>
-#include <linux/personality.h>
-#include <linux/tty.h>
-#include <linux/binfmts.h>
-#include <linux/module.h>
-
-#include <asm/setup.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/traps.h>
-#include <asm/ucontext.h>
-
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
-static const int frame_extra_sizes[16] = {
-  [1]  = -1, /* sizeof(((struct frame *)0)->un.fmt1), */
-  [2]  = sizeof(((struct frame *)0)->un.fmt2),
-  [3]  = sizeof(((struct frame *)0)->un.fmt3),
-  [4]  = sizeof(((struct frame *)0)->un.fmt4),
-  [5]  = -1, /* sizeof(((struct frame *)0)->un.fmt5), */
-  [6]  = -1, /* sizeof(((struct frame *)0)->un.fmt6), */
-  [7]  = sizeof(((struct frame *)0)->un.fmt7),
-  [8]  = -1, /* sizeof(((struct frame *)0)->un.fmt8), */
-  [9]  = sizeof(((struct frame *)0)->un.fmt9),
-  [10] = sizeof(((struct frame *)0)->un.fmta),
-  [11] = sizeof(((struct frame *)0)->un.fmtb),
-  [12] = -1, /* sizeof(((struct frame *)0)->un.fmtc), */
-  [13] = -1, /* sizeof(((struct frame *)0)->un.fmtd), */
-  [14] = -1, /* sizeof(((struct frame *)0)->un.fmte), */
-  [15] = -1, /* sizeof(((struct frame *)0)->un.fmtf), */
-};
-
-int handle_kernel_fault(struct pt_regs *regs)
-{
-       const struct exception_table_entry *fixup;
-       struct pt_regs *tregs;
-
-       /* Are we prepared to handle this kernel fault? */
-       fixup = search_exception_tables(regs->pc);
-       if (!fixup)
-               return 0;
-
-       /* Create a new four word stack frame, discarding the old one. */
-       regs->stkadj = frame_extra_sizes[regs->format];
-       tregs = (struct pt_regs *)((long)regs + regs->stkadj);
-       tregs->vector = regs->vector;
-       tregs->format = 0;
-       tregs->pc = fixup->fixup;
-       tregs->sr = regs->sr;
-
-       return 1;
-}
-
-/*
- * Atomically swap in the new signal mask, and wait for a signal.
- */
-asmlinkage int
-sys_sigsuspend(int unused0, int unused1, old_sigset_t mask)
-{
-       mask &= _BLOCKABLE;
-       spin_lock_irq(&current->sighand->siglock);
-       current->saved_sigmask = current->blocked;
-       siginitset(&current->blocked, mask);
-       recalc_sigpending();
-       spin_unlock_irq(&current->sighand->siglock);
-
-       current->state = TASK_INTERRUPTIBLE;
-       schedule();
-       set_restore_sigmask();
-
-       return -ERESTARTNOHAND;
-}
-
-asmlinkage int
-sys_sigaction(int sig, const struct old_sigaction __user *act,
-             struct old_sigaction __user *oact)
-{
-       struct k_sigaction new_ka, old_ka;
-       int ret;
-
-       if (act) {
-               old_sigset_t mask;
-               if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
-                   __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
-                   __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) ||
-                   __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
-                   __get_user(mask, &act->sa_mask))
-                       return -EFAULT;
-               siginitset(&new_ka.sa.sa_mask, mask);
-       }
-
-       ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
-       if (!ret && oact) {
-               if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
-                   __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
-                   __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) ||
-                   __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
-                   __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
-                       return -EFAULT;
-       }
-
-       return ret;
-}
-
-asmlinkage int
-sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
-{
-       return do_sigaltstack(uss, uoss, rdusp());
-}
-
-
-/*
- * Do a signal return; undo the signal stack.
- *
- * Keep the return code on the stack quadword aligned!
- * That makes the cache flush below easier.
- */
-
-struct sigframe
-{
-       char __user *pretcode;
-       int sig;
-       int code;
-       struct sigcontext __user *psc;
-       char retcode[8];
-       unsigned long extramask[_NSIG_WORDS-1];
-       struct sigcontext sc;
-};
-
-struct rt_sigframe
-{
-       char __user *pretcode;
-       int sig;
-       struct siginfo __user *pinfo;
-       void __user *puc;
-       char retcode[8];
-       struct siginfo info;
-       struct ucontext uc;
-};
-
-
-static unsigned char fpu_version;      /* version number of fpu, set by setup_frame */
-
-static inline int restore_fpu_state(struct sigcontext *sc)
-{
-       int err = 1;
-
-       if (FPU_IS_EMU) {
-           /* restore registers */
-           memcpy(current->thread.fpcntl, sc->sc_fpcntl, 12);
-           memcpy(current->thread.fp, sc->sc_fpregs, 24);
-           return 0;
-       }
-
-       if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
-           /* Verify the frame format.  */
-           if (!CPU_IS_060 && (sc->sc_fpstate[0] != fpu_version))
-               goto out;
-           if (CPU_IS_020_OR_030) {
-               if (m68k_fputype & FPU_68881 &&
-                   !(sc->sc_fpstate[1] == 0x18 || sc->sc_fpstate[1] == 0xb4))
-                   goto out;
-               if (m68k_fputype & FPU_68882 &&
-                   !(sc->sc_fpstate[1] == 0x38 || sc->sc_fpstate[1] == 0xd4))
-                   goto out;
-           } else if (CPU_IS_040) {
-               if (!(sc->sc_fpstate[1] == 0x00 ||
-                      sc->sc_fpstate[1] == 0x28 ||
-                      sc->sc_fpstate[1] == 0x60))
-                   goto out;
-           } else if (CPU_IS_060) {
-               if (!(sc->sc_fpstate[3] == 0x00 ||
-                      sc->sc_fpstate[3] == 0x60 ||
-                     sc->sc_fpstate[3] == 0xe0))
-                   goto out;
-           } else
-               goto out;
-
-           __asm__ volatile (".chip 68k/68881\n\t"
-                             "fmovemx %0,%%fp0-%%fp1\n\t"
-                             "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
-                             ".chip 68k"
-                             : /* no outputs */
-                             : "m" (*sc->sc_fpregs), "m" (*sc->sc_fpcntl));
-       }
-       __asm__ volatile (".chip 68k/68881\n\t"
-                         "frestore %0\n\t"
-                         ".chip 68k" : : "m" (*sc->sc_fpstate));
-       err = 0;
-
-out:
-       return err;
-}
-
-#define FPCONTEXT_SIZE 216
-#define uc_fpstate     uc_filler[0]
-#define uc_formatvec   uc_filler[FPCONTEXT_SIZE/4]
-#define uc_extra       uc_filler[FPCONTEXT_SIZE/4+1]
-
-static inline int rt_restore_fpu_state(struct ucontext __user *uc)
-{
-       unsigned char fpstate[FPCONTEXT_SIZE];
-       int context_size = CPU_IS_060 ? 8 : 0;
-       fpregset_t fpregs;
-       int err = 1;
-
-       if (FPU_IS_EMU) {
-               /* restore fpu control register */
-               if (__copy_from_user(current->thread.fpcntl,
-                               uc->uc_mcontext.fpregs.f_fpcntl, 12))
-                       goto out;
-               /* restore all other fpu register */
-               if (__copy_from_user(current->thread.fp,
-                               uc->uc_mcontext.fpregs.f_fpregs, 96))
-                       goto out;
-               return 0;
-       }
-
-       if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate))
-               goto out;
-       if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
-               if (!CPU_IS_060)
-                       context_size = fpstate[1];
-               /* Verify the frame format.  */
-               if (!CPU_IS_060 && (fpstate[0] != fpu_version))
-                       goto out;
-               if (CPU_IS_020_OR_030) {
-                       if (m68k_fputype & FPU_68881 &&
-                           !(context_size == 0x18 || context_size == 0xb4))
-                               goto out;
-                       if (m68k_fputype & FPU_68882 &&
-                           !(context_size == 0x38 || context_size == 0xd4))
-                               goto out;
-               } else if (CPU_IS_040) {
-                       if (!(context_size == 0x00 ||
-                             context_size == 0x28 ||
-                             context_size == 0x60))
-                               goto out;
-               } else if (CPU_IS_060) {
-                       if (!(fpstate[3] == 0x00 ||
-                             fpstate[3] == 0x60 ||
-                             fpstate[3] == 0xe0))
-                               goto out;
-               } else
-                       goto out;
-               if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs,
-                                    sizeof(fpregs)))
-                       goto out;
-               __asm__ volatile (".chip 68k/68881\n\t"
-                                 "fmovemx %0,%%fp0-%%fp7\n\t"
-                                 "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
-                                 ".chip 68k"
-                                 : /* no outputs */
-                                 : "m" (*fpregs.f_fpregs),
-                                   "m" (*fpregs.f_fpcntl));
-       }
-       if (context_size &&
-           __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1,
-                            context_size))
-               goto out;
-       __asm__ volatile (".chip 68k/68881\n\t"
-                         "frestore %0\n\t"
-                         ".chip 68k" : : "m" (*fpstate));
-       err = 0;
-
-out:
-       return err;
-}
-
-static int mangle_kernel_stack(struct pt_regs *regs, int formatvec,
-                              void __user *fp)
-{
-       int fsize = frame_extra_sizes[formatvec >> 12];
-       if (fsize < 0) {
-               /*
-                * user process trying to return with weird frame format
-                */
-#ifdef DEBUG
-               printk("user process returning with weird frame format\n");
-#endif
-               return 1;
-       }
-       if (!fsize) {
-               regs->format = formatvec >> 12;
-               regs->vector = formatvec & 0xfff;
-       } else {
-               struct switch_stack *sw = (struct switch_stack *)regs - 1;
-               unsigned long buf[fsize / 2]; /* yes, twice as much */
-
-               /* that'll make sure that expansion won't crap over data */
-               if (copy_from_user(buf + fsize / 4, fp, fsize))
-                       return 1;
-
-               /* point of no return */
-               regs->format = formatvec >> 12;
-               regs->vector = formatvec & 0xfff;
-#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack))
-               __asm__ __volatile__
-                       ("   movel %0,%/a0\n\t"
-                        "   subl %1,%/a0\n\t"     /* make room on stack */
-                        "   movel %/a0,%/sp\n\t"  /* set stack pointer */
-                        /* move switch_stack and pt_regs */
-                        "1: movel %0@+,%/a0@+\n\t"
-                        "   dbra %2,1b\n\t"
-                        "   lea %/sp@(%c3),%/a0\n\t" /* add offset of fmt */
-                        "   lsrl  #2,%1\n\t"
-                        "   subql #1,%1\n\t"
-                        /* copy to the gap we'd made */
-                        "2: movel %4@+,%/a0@+\n\t"
-                        "   dbra %1,2b\n\t"
-                        "   bral ret_from_signal\n"
-                        : /* no outputs, it doesn't ever return */
-                        : "a" (sw), "d" (fsize), "d" (frame_offset/4-1),
-                          "n" (frame_offset), "a" (buf + fsize/4)
-                        : "a0");
-#undef frame_offset
-       }
-       return 0;
-}
-
-static inline int
-restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __user *fp)
-{
-       int formatvec;
-       struct sigcontext context;
-       int err;
-
-       /* Always make any pending restarted system calls return -EINTR */
-       current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
-       /* get previous context */
-       if (copy_from_user(&context, usc, sizeof(context)))
-               goto badframe;
-
-       /* restore passed registers */
-       regs->d0 = context.sc_d0;
-       regs->d1 = context.sc_d1;
-       regs->a0 = context.sc_a0;
-       regs->a1 = context.sc_a1;
-       regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff);
-       regs->pc = context.sc_pc;
-       regs->orig_d0 = -1;             /* disable syscall checks */
-       wrusp(context.sc_usp);
-       formatvec = context.sc_formatvec;
-
-       err = restore_fpu_state(&context);
-
-       if (err || mangle_kernel_stack(regs, formatvec, fp))
-               goto badframe;
-
-       return 0;
-
-badframe:
-       return 1;
-}
-
-static inline int
-rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw,
-                   struct ucontext __user *uc)
-{
-       int temp;
-       greg_t __user *gregs = uc->uc_mcontext.gregs;
-       unsigned long usp;
-       int err;
-
-       /* Always make any pending restarted system calls return -EINTR */
-       current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
-       err = __get_user(temp, &uc->uc_mcontext.version);
-       if (temp != MCONTEXT_VERSION)
-               goto badframe;
-       /* restore passed registers */
-       err |= __get_user(regs->d0, &gregs[0]);
-       err |= __get_user(regs->d1, &gregs[1]);
-       err |= __get_user(regs->d2, &gregs[2]);
-       err |= __get_user(regs->d3, &gregs[3]);
-       err |= __get_user(regs->d4, &gregs[4]);
-       err |= __get_user(regs->d5, &gregs[5]);
-       err |= __get_user(sw->d6, &gregs[6]);
-       err |= __get_user(sw->d7, &gregs[7]);
-       err |= __get_user(regs->a0, &gregs[8]);
-       err |= __get_user(regs->a1, &gregs[9]);
-       err |= __get_user(regs->a2, &gregs[10]);
-       err |= __get_user(sw->a3, &gregs[11]);
-       err |= __get_user(sw->a4, &gregs[12]);
-       err |= __get_user(sw->a5, &gregs[13]);
-       err |= __get_user(sw->a6, &gregs[14]);
-       err |= __get_user(usp, &gregs[15]);
-       wrusp(usp);
-       err |= __get_user(regs->pc, &gregs[16]);
-       err |= __get_user(temp, &gregs[17]);
-       regs->sr = (regs->sr & 0xff00) | (temp & 0xff);
-       regs->orig_d0 = -1;             /* disable syscall checks */
-       err |= __get_user(temp, &uc->uc_formatvec);
-
-       err |= rt_restore_fpu_state(uc);
-
-       if (err || do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT)
-               goto badframe;
-
-       if (mangle_kernel_stack(regs, temp, &uc->uc_extra))
-               goto badframe;
-
-       return 0;
-
-badframe:
-       return 1;
-}
-
-asmlinkage int do_sigreturn(unsigned long __unused)
-{
-       struct switch_stack *sw = (struct switch_stack *) &__unused;
-       struct pt_regs *regs = (struct pt_regs *) (sw + 1);
-       unsigned long usp = rdusp();
-       struct sigframe __user *frame = (struct sigframe __user *)(usp - 4);
-       sigset_t set;
-
-       if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
-               goto badframe;
-       if (__get_user(set.sig[0], &frame->sc.sc_mask) ||
-           (_NSIG_WORDS > 1 &&
-            __copy_from_user(&set.sig[1], &frame->extramask,
-                             sizeof(frame->extramask))))
-               goto badframe;
-
-       sigdelsetmask(&set, ~_BLOCKABLE);
-       current->blocked = set;
-       recalc_sigpending();
-
-       if (restore_sigcontext(regs, &frame->sc, frame + 1))
-               goto badframe;
-       return regs->d0;
-
-badframe:
-       force_sig(SIGSEGV, current);
-       return 0;
-}
-
-asmlinkage int do_rt_sigreturn(unsigned long __unused)
-{
-       struct switch_stack *sw = (struct switch_stack *) &__unused;
-       struct pt_regs *regs = (struct pt_regs *) (sw + 1);
-       unsigned long usp = rdusp();
-       struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4);
-       sigset_t set;
-
-       if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
-               goto badframe;
-       if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
-               goto badframe;
-
-       sigdelsetmask(&set, ~_BLOCKABLE);
-       current->blocked = set;
-       recalc_sigpending();
-
-       if (rt_restore_ucontext(regs, sw, &frame->uc))
-               goto badframe;
-       return regs->d0;
-
-badframe:
-       force_sig(SIGSEGV, current);
-       return 0;
-}
-
-/*
- * Set up a signal frame.
- */
-
-static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)
-{
-       if (FPU_IS_EMU) {
-               /* save registers */
-               memcpy(sc->sc_fpcntl, current->thread.fpcntl, 12);
-               memcpy(sc->sc_fpregs, current->thread.fp, 24);
-               return;
-       }
-
-       __asm__ volatile (".chip 68k/68881\n\t"
-                         "fsave %0\n\t"
-                         ".chip 68k"
-                         : : "m" (*sc->sc_fpstate) : "memory");
-
-       if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
-               fpu_version = sc->sc_fpstate[0];
-               if (CPU_IS_020_OR_030 &&
-                   regs->vector >= (VEC_FPBRUC * 4) &&
-                   regs->vector <= (VEC_FPNAN * 4)) {
-                       /* Clear pending exception in 68882 idle frame */
-                       if (*(unsigned short *) sc->sc_fpstate == 0x1f38)
-                               sc->sc_fpstate[0x38] |= 1 << 3;
-               }
-               __asm__ volatile (".chip 68k/68881\n\t"
-                                 "fmovemx %%fp0-%%fp1,%0\n\t"
-                                 "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
-                                 ".chip 68k"
-                                 : "=m" (*sc->sc_fpregs),
-                                   "=m" (*sc->sc_fpcntl)
-                                 : /* no inputs */
-                                 : "memory");
-       }
-}
-
-static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs)
-{
-       unsigned char fpstate[FPCONTEXT_SIZE];
-       int context_size = CPU_IS_060 ? 8 : 0;
-       int err = 0;
-
-       if (FPU_IS_EMU) {
-               /* save fpu control register */
-               err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpcntl,
-                               current->thread.fpcntl, 12);
-               /* save all other fpu register */
-               err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpregs,
-                               current->thread.fp, 96);
-               return err;
-       }
-
-       __asm__ volatile (".chip 68k/68881\n\t"
-                         "fsave %0\n\t"
-                         ".chip 68k"
-                         : : "m" (*fpstate) : "memory");
-
-       err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate);
-       if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
-               fpregset_t fpregs;
-               if (!CPU_IS_060)
-                       context_size = fpstate[1];
-               fpu_version = fpstate[0];
-               if (CPU_IS_020_OR_030 &&
-                   regs->vector >= (VEC_FPBRUC * 4) &&
-                   regs->vector <= (VEC_FPNAN * 4)) {
-                       /* Clear pending exception in 68882 idle frame */
-                       if (*(unsigned short *) fpstate == 0x1f38)
-                               fpstate[0x38] |= 1 << 3;
-               }
-               __asm__ volatile (".chip 68k/68881\n\t"
-                                 "fmovemx %%fp0-%%fp7,%0\n\t"
-                                 "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
-                                 ".chip 68k"
-                                 : "=m" (*fpregs.f_fpregs),
-                                   "=m" (*fpregs.f_fpcntl)
-                                 : /* no inputs */
-                                 : "memory");
-               err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs,
-                                   sizeof(fpregs));
-       }
-       if (context_size)
-               err |= copy_to_user((long __user *)&uc->uc_fpstate + 1, fpstate + 4,
-                                   context_size);
-       return err;
-}
-
-static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
-                            unsigned long mask)
-{
-       sc->sc_mask = mask;
-       sc->sc_usp = rdusp();
-       sc->sc_d0 = regs->d0;
-       sc->sc_d1 = regs->d1;
-       sc->sc_a0 = regs->a0;
-       sc->sc_a1 = regs->a1;
-       sc->sc_sr = regs->sr;
-       sc->sc_pc = regs->pc;
-       sc->sc_formatvec = regs->format << 12 | regs->vector;
-       save_fpu_state(sc, regs);
-}
-
-static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs)
-{
-       struct switch_stack *sw = (struct switch_stack *)regs - 1;
-       greg_t __user *gregs = uc->uc_mcontext.gregs;
-       int err = 0;
-
-       err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version);
-       err |= __put_user(regs->d0, &gregs[0]);
-       err |= __put_user(regs->d1, &gregs[1]);
-       err |= __put_user(regs->d2, &gregs[2]);
-       err |= __put_user(regs->d3, &gregs[3]);
-       err |= __put_user(regs->d4, &gregs[4]);
-       err |= __put_user(regs->d5, &gregs[5]);
-       err |= __put_user(sw->d6, &gregs[6]);
-       err |= __put_user(sw->d7, &gregs[7]);
-       err |= __put_user(regs->a0, &gregs[8]);
-       err |= __put_user(regs->a1, &gregs[9]);
-       err |= __put_user(regs->a2, &gregs[10]);
-       err |= __put_user(sw->a3, &gregs[11]);
-       err |= __put_user(sw->a4, &gregs[12]);
-       err |= __put_user(sw->a5, &gregs[13]);
-       err |= __put_user(sw->a6, &gregs[14]);
-       err |= __put_user(rdusp(), &gregs[15]);
-       err |= __put_user(regs->pc, &gregs[16]);
-       err |= __put_user(regs->sr, &gregs[17]);
-       err |= __put_user((regs->format << 12) | regs->vector, &uc->uc_formatvec);
-       err |= rt_save_fpu_state(uc, regs);
-       return err;
-}
-
-static inline void push_cache (unsigned long vaddr)
-{
-       /*
-        * Using the old cache_push_v() was really a big waste.
-        *
-        * What we are trying to do is to flush 8 bytes to ram.
-        * Flushing 2 cache lines of 16 bytes is much cheaper than
-        * flushing 1 or 2 pages, as previously done in
-        * cache_push_v().
-        *                                                     Jes
-        */
-       if (CPU_IS_040) {
-               unsigned long temp;
-
-               __asm__ __volatile__ (".chip 68040\n\t"
-                                     "nop\n\t"
-                                     "ptestr (%1)\n\t"
-                                     "movec %%mmusr,%0\n\t"
-                                     ".chip 68k"
-                                     : "=r" (temp)
-                                     : "a" (vaddr));
-
-               temp &= PAGE_MASK;
-               temp |= vaddr & ~PAGE_MASK;
-
-               __asm__ __volatile__ (".chip 68040\n\t"
-                                     "nop\n\t"
-                                     "cpushl %%bc,(%0)\n\t"
-                                     ".chip 68k"
-                                     : : "a" (temp));
-       }
-       else if (CPU_IS_060) {
-               unsigned long temp;
-               __asm__ __volatile__ (".chip 68060\n\t"
-                                     "plpar (%0)\n\t"
-                                     ".chip 68k"
-                                     : "=a" (temp)
-                                     : "0" (vaddr));
-               __asm__ __volatile__ (".chip 68060\n\t"
-                                     "cpushl %%bc,(%0)\n\t"
-                                     ".chip 68k"
-                                     : : "a" (temp));
-       }
-       else {
-               /*
-                * 68030/68020 have no writeback cache;
-                * still need to clear icache.
-                * Note that vaddr is guaranteed to be long word aligned.
-                */
-               unsigned long temp;
-               asm volatile ("movec %%cacr,%0" : "=r" (temp));
-               temp += 4;
-               asm volatile ("movec %0,%%caar\n\t"
-                             "movec %1,%%cacr"
-                             : : "r" (vaddr), "r" (temp));
-               asm volatile ("movec %0,%%caar\n\t"
-                             "movec %1,%%cacr"
-                             : : "r" (vaddr + 4), "r" (temp));
-       }
-}
-
-static inline void __user *
-get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
-{
-       unsigned long usp;
-
-       /* Default to using normal stack.  */
-       usp = rdusp();
-
-       /* This is the X/Open sanctioned signal stack switching.  */
-       if (ka->sa.sa_flags & SA_ONSTACK) {
-               if (!sas_ss_flags(usp))
-                       usp = current->sas_ss_sp + current->sas_ss_size;
-       }
-       return (void __user *)((usp - frame_size) & -8UL);
-}
-
-static int setup_frame (int sig, struct k_sigaction *ka,
-                        sigset_t *set, struct pt_regs *regs)
-{
-       struct sigframe __user *frame;
-       int fsize = frame_extra_sizes[regs->format];
-       struct sigcontext context;
-       int err = 0;
-
-       if (fsize < 0) {
-#ifdef DEBUG
-               printk ("setup_frame: Unknown frame format %#x\n",
-                       regs->format);
-#endif
-               goto give_sigsegv;
-       }
-
-       frame = get_sigframe(ka, regs, sizeof(*frame) + fsize);
-
-       if (fsize)
-               err |= copy_to_user (frame + 1, regs + 1, fsize);
-
-       err |= __put_user((current_thread_info()->exec_domain
-                          && current_thread_info()->exec_domain->signal_invmap
-                          && sig < 32
-                          ? current_thread_info()->exec_domain->signal_invmap[sig]
-                          : sig),
-                         &frame->sig);
-
-       err |= __put_user(regs->vector, &frame->code);
-       err |= __put_user(&frame->sc, &frame->psc);
-
-       if (_NSIG_WORDS > 1)
-               err |= copy_to_user(frame->extramask, &set->sig[1],
-                                   sizeof(frame->extramask));
-
-       setup_sigcontext(&context, regs, set->sig[0]);
-       err |= copy_to_user (&frame->sc, &context, sizeof(context));
-
-       /* Set up to return from userspace.  */
-       err |= __put_user(frame->retcode, &frame->pretcode);
-       /* moveq #,d0; trap #0 */
-       err |= __put_user(0x70004e40 + (__NR_sigreturn << 16),
-                         (long __user *)(frame->retcode));
-
-       if (err)
-               goto give_sigsegv;
-
-       push_cache ((unsigned long) &frame->retcode);
-
-       /*
-        * Set up registers for signal handler.  All the state we are about
-        * to destroy is successfully copied to sigframe.
-        */
-       wrusp ((unsigned long) frame);
-       regs->pc = (unsigned long) ka->sa.sa_handler;
-
-       /*
-        * This is subtle; if we build more than one sigframe, all but the
-        * first one will see frame format 0 and have fsize == 0, so we won't
-        * screw stkadj.
-        */
-       if (fsize)
-               regs->stkadj = fsize;
-
-       /* Prepare to skip over the extra stuff in the exception frame.  */
-       if (regs->stkadj) {
-               struct pt_regs *tregs =
-                       (struct pt_regs *)((ulong)regs + regs->stkadj);
-#ifdef DEBUG
-               printk("Performing stackadjust=%04x\n", regs->stkadj);
-#endif
-               /* This must be copied with decreasing addresses to
-                   handle overlaps.  */
-               tregs->vector = 0;
-               tregs->format = 0;
-               tregs->pc = regs->pc;
-               tregs->sr = regs->sr;
-       }
-       return 0;
-
-give_sigsegv:
-       force_sigsegv(sig, current);
-       return err;
-}
-
-static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
-                           sigset_t *set, struct pt_regs *regs)
-{
-       struct rt_sigframe __user *frame;
-       int fsize = frame_extra_sizes[regs->format];
-       int err = 0;
-
-       if (fsize < 0) {
-#ifdef DEBUG
-               printk ("setup_frame: Unknown frame format %#x\n",
-                       regs->format);
-#endif
-               goto give_sigsegv;
-       }
-
-       frame = get_sigframe(ka, regs, sizeof(*frame));
-
-       if (fsize)
-               err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize);
-
-       err |= __put_user((current_thread_info()->exec_domain
-                          && current_thread_info()->exec_domain->signal_invmap
-                          && sig < 32
-                          ? current_thread_info()->exec_domain->signal_invmap[sig]
-                          : sig),
-                         &frame->sig);
-       err |= __put_user(&frame->info, &frame->pinfo);
-       err |= __put_user(&frame->uc, &frame->puc);
-       err |= copy_siginfo_to_user(&frame->info, info);
-
-       /* Create the ucontext.  */
-       err |= __put_user(0, &frame->uc.uc_flags);
-       err |= __put_user(NULL, &frame->uc.uc_link);
-       err |= __put_user((void __user *)current->sas_ss_sp,
-                         &frame->uc.uc_stack.ss_sp);
-       err |= __put_user(sas_ss_flags(rdusp()),
-                         &frame->uc.uc_stack.ss_flags);
-       err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
-       err |= rt_setup_ucontext(&frame->uc, regs);
-       err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set));
-
-       /* Set up to return from userspace.  */
-       err |= __put_user(frame->retcode, &frame->pretcode);
-#ifdef __mcoldfire__
-       /* movel #__NR_rt_sigreturn,d0; trap #0 */
-       err |= __put_user(0x203c0000, (long __user *)(frame->retcode + 0));
-       err |= __put_user(0x00004e40 + (__NR_rt_sigreturn << 16),
-                         (long __user *)(frame->retcode + 4));
+#ifdef CONFIG_MMU
+#include "signal_mm.c"
 #else
-       /* moveq #,d0; notb d0; trap #0 */
-       err |= __put_user(0x70004600 + ((__NR_rt_sigreturn ^ 0xff) << 16),
-                         (long __user *)(frame->retcode + 0));
-       err |= __put_user(0x4e40, (short __user *)(frame->retcode + 4));
-#endif
-
-       if (err)
-               goto give_sigsegv;
-
-       push_cache ((unsigned long) &frame->retcode);
-
-       /*
-        * Set up registers for signal handler.  All the state we are about
-        * to destroy is successfully copied to sigframe.
-        */
-       wrusp ((unsigned long) frame);
-       regs->pc = (unsigned long) ka->sa.sa_handler;
-
-       /*
-        * This is subtle; if we build more than one sigframe, all but the
-        * first one will see frame format 0 and have fsize == 0, so we won't
-        * screw stkadj.
-        */
-       if (fsize)
-               regs->stkadj = fsize;
-
-       /* Prepare to skip over the extra stuff in the exception frame.  */
-       if (regs->stkadj) {
-               struct pt_regs *tregs =
-                       (struct pt_regs *)((ulong)regs + regs->stkadj);
-#ifdef DEBUG
-               printk("Performing stackadjust=%04x\n", regs->stkadj);
+#include "signal_no.c"
 #endif
-               /* This must be copied with decreasing addresses to
-                   handle overlaps.  */
-               tregs->vector = 0;
-               tregs->format = 0;
-               tregs->pc = regs->pc;
-               tregs->sr = regs->sr;
-       }
-       return 0;
-
-give_sigsegv:
-       force_sigsegv(sig, current);
-       return err;
-}
-
-static inline void
-handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
-{
-       switch (regs->d0) {
-       case -ERESTARTNOHAND:
-               if (!has_handler)
-                       goto do_restart;
-               regs->d0 = -EINTR;
-               break;
-
-       case -ERESTART_RESTARTBLOCK:
-               if (!has_handler) {
-                       regs->d0 = __NR_restart_syscall;
-                       regs->pc -= 2;
-                       break;
-               }
-               regs->d0 = -EINTR;
-               break;
-
-       case -ERESTARTSYS:
-               if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) {
-                       regs->d0 = -EINTR;
-                       break;
-               }
-       /* fallthrough */
-       case -ERESTARTNOINTR:
-       do_restart:
-               regs->d0 = regs->orig_d0;
-               regs->pc -= 2;
-               break;
-       }
-}
-
-void ptrace_signal_deliver(struct pt_regs *regs, void *cookie)
-{
-       if (regs->orig_d0 < 0)
-               return;
-       switch (regs->d0) {
-       case -ERESTARTNOHAND:
-       case -ERESTARTSYS:
-       case -ERESTARTNOINTR:
-               regs->d0 = regs->orig_d0;
-               regs->orig_d0 = -1;
-               regs->pc -= 2;
-               break;
-       }
-}
-
-/*
- * OK, we're invoking a handler
- */
-static void
-handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
-             sigset_t *oldset, struct pt_regs *regs)
-{
-       int err;
-       /* are we from a system call? */
-       if (regs->orig_d0 >= 0)
-               /* If so, check system call restarting.. */
-               handle_restart(regs, ka, 1);
-
-       /* set up the stack frame */
-       if (ka->sa.sa_flags & SA_SIGINFO)
-               err = setup_rt_frame(sig, ka, info, oldset, regs);
-       else
-               err = setup_frame(sig, ka, oldset, regs);
-
-       if (err)
-               return;
-
-       sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
-       if (!(ka->sa.sa_flags & SA_NODEFER))
-               sigaddset(&current->blocked,sig);
-       recalc_sigpending();
-
-       if (test_thread_flag(TIF_DELAYED_TRACE)) {
-               regs->sr &= ~0x8000;
-               send_sig(SIGTRAP, current, 1);
-       }
-
-       clear_thread_flag(TIF_RESTORE_SIGMASK);
-}
-
-/*
- * Note that 'init' is a special process: it doesn't get signals it doesn't
- * want to handle. Thus you cannot kill init even with a SIGKILL even by
- * mistake.
- */
-asmlinkage void do_signal(struct pt_regs *regs)
-{
-       siginfo_t info;
-       struct k_sigaction ka;
-       int signr;
-       sigset_t *oldset;
-
-       current->thread.esp0 = (unsigned long) regs;
-
-       if (test_thread_flag(TIF_RESTORE_SIGMASK))
-               oldset = &current->saved_sigmask;
-       else
-               oldset = &current->blocked;
-
-       signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-       if (signr > 0) {
-               /* Whee!  Actually deliver the signal.  */
-               handle_signal(signr, &ka, &info, oldset, regs);
-               return;
-       }
-
-       /* Did we come from a system call? */
-       if (regs->orig_d0 >= 0)
-               /* Restart the system call - no handlers present */
-               handle_restart(regs, NULL, 0);
-
-       /* If there's no signal to deliver, we just restore the saved mask.  */
-       if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-               clear_thread_flag(TIF_RESTORE_SIGMASK);
-               sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
-       }
-}
diff --git a/arch/m68k/kernel/signal_mm.c b/arch/m68k/kernel/signal_mm.c
new file mode 100644 (file)
index 0000000..a0afc23
--- /dev/null
@@ -0,0 +1,1017 @@
+/*
+ *  linux/arch/m68k/kernel/signal.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+/*
+ * Linux/m68k support by Hamish Macdonald
+ *
+ * 68060 fixes by Jesper Skov
+ *
+ * 1997-12-01  Modified for POSIX.1b signals by Andreas Schwab
+ *
+ * mathemu support by Roman Zippel
+ *  (Note: fpstate in the signal context is completely ignored for the emulator
+ *         and the internal floating point format is put on stack)
+ */
+
+/*
+ * ++roman (07/09/96): implemented signal stacks (specially for tosemu on
+ * Atari :-) Current limitation: Only one sigstack can be active at one time.
+ * If a second signal with SA_ONSTACK set arrives while working on a sigstack,
+ * SA_ONSTACK is ignored. This behaviour avoids lots of trouble with nested
+ * signal handlers!
+ */
+
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/syscalls.h>
+#include <linux/errno.h>
+#include <linux/wait.h>
+#include <linux/ptrace.h>
+#include <linux/unistd.h>
+#include <linux/stddef.h>
+#include <linux/highuid.h>
+#include <linux/personality.h>
+#include <linux/tty.h>
+#include <linux/binfmts.h>
+#include <linux/module.h>
+
+#include <asm/setup.h>
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/traps.h>
+#include <asm/ucontext.h>
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+static const int frame_extra_sizes[16] = {
+  [1]  = -1, /* sizeof(((struct frame *)0)->un.fmt1), */
+  [2]  = sizeof(((struct frame *)0)->un.fmt2),
+  [3]  = sizeof(((struct frame *)0)->un.fmt3),
+  [4]  = sizeof(((struct frame *)0)->un.fmt4),
+  [5]  = -1, /* sizeof(((struct frame *)0)->un.fmt5), */
+  [6]  = -1, /* sizeof(((struct frame *)0)->un.fmt6), */
+  [7]  = sizeof(((struct frame *)0)->un.fmt7),
+  [8]  = -1, /* sizeof(((struct frame *)0)->un.fmt8), */
+  [9]  = sizeof(((struct frame *)0)->un.fmt9),
+  [10] = sizeof(((struct frame *)0)->un.fmta),
+  [11] = sizeof(((struct frame *)0)->un.fmtb),
+  [12] = -1, /* sizeof(((struct frame *)0)->un.fmtc), */
+  [13] = -1, /* sizeof(((struct frame *)0)->un.fmtd), */
+  [14] = -1, /* sizeof(((struct frame *)0)->un.fmte), */
+  [15] = -1, /* sizeof(((struct frame *)0)->un.fmtf), */
+};
+
+int handle_kernel_fault(struct pt_regs *regs)
+{
+       const struct exception_table_entry *fixup;
+       struct pt_regs *tregs;
+
+       /* Are we prepared to handle this kernel fault? */
+       fixup = search_exception_tables(regs->pc);
+       if (!fixup)
+               return 0;
+
+       /* Create a new four word stack frame, discarding the old one. */
+       regs->stkadj = frame_extra_sizes[regs->format];
+       tregs = (struct pt_regs *)((long)regs + regs->stkadj);
+       tregs->vector = regs->vector;
+       tregs->format = 0;
+       tregs->pc = fixup->fixup;
+       tregs->sr = regs->sr;
+
+       return 1;
+}
+
+/*
+ * Atomically swap in the new signal mask, and wait for a signal.
+ */
+asmlinkage int
+sys_sigsuspend(int unused0, int unused1, old_sigset_t mask)
+{
+       mask &= _BLOCKABLE;
+       spin_lock_irq(&current->sighand->siglock);
+       current->saved_sigmask = current->blocked;
+       siginitset(&current->blocked, mask);
+       recalc_sigpending();
+       spin_unlock_irq(&current->sighand->siglock);
+
+       current->state = TASK_INTERRUPTIBLE;
+       schedule();
+       set_restore_sigmask();
+
+       return -ERESTARTNOHAND;
+}
+
+asmlinkage int
+sys_sigaction(int sig, const struct old_sigaction __user *act,
+             struct old_sigaction __user *oact)
+{
+       struct k_sigaction new_ka, old_ka;
+       int ret;
+
+       if (act) {
+               old_sigset_t mask;
+               if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+                   __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+                   __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) ||
+                   __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+                   __get_user(mask, &act->sa_mask))
+                       return -EFAULT;
+               siginitset(&new_ka.sa.sa_mask, mask);
+       }
+
+       ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+       if (!ret && oact) {
+               if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+                   __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+                   __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) ||
+                   __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
+                   __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
+                       return -EFAULT;
+       }
+
+       return ret;
+}
+
+asmlinkage int
+sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
+{
+       return do_sigaltstack(uss, uoss, rdusp());
+}
+
+
+/*
+ * Do a signal return; undo the signal stack.
+ *
+ * Keep the return code on the stack quadword aligned!
+ * That makes the cache flush below easier.
+ */
+
+struct sigframe
+{
+       char __user *pretcode;
+       int sig;
+       int code;
+       struct sigcontext __user *psc;
+       char retcode[8];
+       unsigned long extramask[_NSIG_WORDS-1];
+       struct sigcontext sc;
+};
+
+struct rt_sigframe
+{
+       char __user *pretcode;
+       int sig;
+       struct siginfo __user *pinfo;
+       void __user *puc;
+       char retcode[8];
+       struct siginfo info;
+       struct ucontext uc;
+};
+
+
+static unsigned char fpu_version;      /* version number of fpu, set by setup_frame */
+
+static inline int restore_fpu_state(struct sigcontext *sc)
+{
+       int err = 1;
+
+       if (FPU_IS_EMU) {
+           /* restore registers */
+           memcpy(current->thread.fpcntl, sc->sc_fpcntl, 12);
+           memcpy(current->thread.fp, sc->sc_fpregs, 24);
+           return 0;
+       }
+
+       if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
+           /* Verify the frame format.  */
+           if (!CPU_IS_060 && (sc->sc_fpstate[0] != fpu_version))
+               goto out;
+           if (CPU_IS_020_OR_030) {
+               if (m68k_fputype & FPU_68881 &&
+                   !(sc->sc_fpstate[1] == 0x18 || sc->sc_fpstate[1] == 0xb4))
+                   goto out;
+               if (m68k_fputype & FPU_68882 &&
+                   !(sc->sc_fpstate[1] == 0x38 || sc->sc_fpstate[1] == 0xd4))
+                   goto out;
+           } else if (CPU_IS_040) {
+               if (!(sc->sc_fpstate[1] == 0x00 ||
+                      sc->sc_fpstate[1] == 0x28 ||
+                      sc->sc_fpstate[1] == 0x60))
+                   goto out;
+           } else if (CPU_IS_060) {
+               if (!(sc->sc_fpstate[3] == 0x00 ||
+                      sc->sc_fpstate[3] == 0x60 ||
+                     sc->sc_fpstate[3] == 0xe0))
+                   goto out;
+           } else
+               goto out;
+
+           __asm__ volatile (".chip 68k/68881\n\t"
+                             "fmovemx %0,%%fp0-%%fp1\n\t"
+                             "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
+                             ".chip 68k"
+                             : /* no outputs */
+                             : "m" (*sc->sc_fpregs), "m" (*sc->sc_fpcntl));
+       }
+       __asm__ volatile (".chip 68k/68881\n\t"
+                         "frestore %0\n\t"
+                         ".chip 68k" : : "m" (*sc->sc_fpstate));
+       err = 0;
+
+out:
+       return err;
+}
+
+#define FPCONTEXT_SIZE 216
+#define uc_fpstate     uc_filler[0]
+#define uc_formatvec   uc_filler[FPCONTEXT_SIZE/4]
+#define uc_extra       uc_filler[FPCONTEXT_SIZE/4+1]
+
+static inline int rt_restore_fpu_state(struct ucontext __user *uc)
+{
+       unsigned char fpstate[FPCONTEXT_SIZE];
+       int context_size = CPU_IS_060 ? 8 : 0;
+       fpregset_t fpregs;
+       int err = 1;
+
+       if (FPU_IS_EMU) {
+               /* restore fpu control register */
+               if (__copy_from_user(current->thread.fpcntl,
+                               uc->uc_mcontext.fpregs.f_fpcntl, 12))
+                       goto out;
+               /* restore all other fpu register */
+               if (__copy_from_user(current->thread.fp,
+                               uc->uc_mcontext.fpregs.f_fpregs, 96))
+                       goto out;
+               return 0;
+       }
+
+       if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate))
+               goto out;
+       if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
+               if (!CPU_IS_060)
+                       context_size = fpstate[1];
+               /* Verify the frame format.  */
+               if (!CPU_IS_060 && (fpstate[0] != fpu_version))
+                       goto out;
+               if (CPU_IS_020_OR_030) {
+                       if (m68k_fputype & FPU_68881 &&
+                           !(context_size == 0x18 || context_size == 0xb4))
+                               goto out;
+                       if (m68k_fputype & FPU_68882 &&
+                           !(context_size == 0x38 || context_size == 0xd4))
+                               goto out;
+               } else if (CPU_IS_040) {
+                       if (!(context_size == 0x00 ||
+                             context_size == 0x28 ||
+                             context_size == 0x60))
+                               goto out;
+               } else if (CPU_IS_060) {
+                       if (!(fpstate[3] == 0x00 ||
+                             fpstate[3] == 0x60 ||
+                             fpstate[3] == 0xe0))
+                               goto out;
+               } else
+                       goto out;
+               if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs,
+                                    sizeof(fpregs)))
+                       goto out;
+               __asm__ volatile (".chip 68k/68881\n\t"
+                                 "fmovemx %0,%%fp0-%%fp7\n\t"
+                                 "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
+                                 ".chip 68k"
+                                 : /* no outputs */
+                                 : "m" (*fpregs.f_fpregs),
+                                   "m" (*fpregs.f_fpcntl));
+       }
+       if (context_size &&
+           __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1,
+                            context_size))
+               goto out;
+       __asm__ volatile (".chip 68k/68881\n\t"
+                         "frestore %0\n\t"
+                         ".chip 68k" : : "m" (*fpstate));
+       err = 0;
+
+out:
+       return err;
+}
+
+static int mangle_kernel_stack(struct pt_regs *regs, int formatvec,
+                              void __user *fp)
+{
+       int fsize = frame_extra_sizes[formatvec >> 12];
+       if (fsize < 0) {
+               /*
+                * user process trying to return with weird frame format
+                */
+#ifdef DEBUG
+               printk("user process returning with weird frame format\n");
+#endif
+               return 1;
+       }
+       if (!fsize) {
+               regs->format = formatvec >> 12;
+               regs->vector = formatvec & 0xfff;
+       } else {
+               struct switch_stack *sw = (struct switch_stack *)regs - 1;
+               unsigned long buf[fsize / 2]; /* yes, twice as much */
+
+               /* that'll make sure that expansion won't crap over data */
+               if (copy_from_user(buf + fsize / 4, fp, fsize))
+                       return 1;
+
+               /* point of no return */
+               regs->format = formatvec >> 12;
+               regs->vector = formatvec & 0xfff;
+#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack))
+               __asm__ __volatile__
+                       ("   movel %0,%/a0\n\t"
+                        "   subl %1,%/a0\n\t"     /* make room on stack */
+                        "   movel %/a0,%/sp\n\t"  /* set stack pointer */
+                        /* move switch_stack and pt_regs */
+                        "1: movel %0@+,%/a0@+\n\t"
+                        "   dbra %2,1b\n\t"
+                        "   lea %/sp@(%c3),%/a0\n\t" /* add offset of fmt */
+                        "   lsrl  #2,%1\n\t"
+                        "   subql #1,%1\n\t"
+                        /* copy to the gap we'd made */
+                        "2: movel %4@+,%/a0@+\n\t"
+                        "   dbra %1,2b\n\t"
+                        "   bral ret_from_signal\n"
+                        : /* no outputs, it doesn't ever return */
+                        : "a" (sw), "d" (fsize), "d" (frame_offset/4-1),
+                          "n" (frame_offset), "a" (buf + fsize/4)
+                        : "a0");
+#undef frame_offset
+       }
+       return 0;
+}
+
+static inline int
+restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __user *fp)
+{
+       int formatvec;
+       struct sigcontext context;
+       int err;
+
+       /* Always make any pending restarted system calls return -EINTR */
+       current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+       /* get previous context */
+       if (copy_from_user(&context, usc, sizeof(context)))
+               goto badframe;
+
+       /* restore passed registers */
+       regs->d0 = context.sc_d0;
+       regs->d1 = context.sc_d1;
+       regs->a0 = context.sc_a0;
+       regs->a1 = context.sc_a1;
+       regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff);
+       regs->pc = context.sc_pc;
+       regs->orig_d0 = -1;             /* disable syscall checks */
+       wrusp(context.sc_usp);
+       formatvec = context.sc_formatvec;
+
+       err = restore_fpu_state(&context);
+
+       if (err || mangle_kernel_stack(regs, formatvec, fp))
+               goto badframe;
+
+       return 0;
+
+badframe:
+       return 1;
+}
+
+static inline int
+rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw,
+                   struct ucontext __user *uc)
+{
+       int temp;
+       greg_t __user *gregs = uc->uc_mcontext.gregs;
+       unsigned long usp;
+       int err;
+
+       /* Always make any pending restarted system calls return -EINTR */
+       current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+       err = __get_user(temp, &uc->uc_mcontext.version);
+       if (temp != MCONTEXT_VERSION)
+               goto badframe;
+       /* restore passed registers */
+       err |= __get_user(regs->d0, &gregs[0]);
+       err |= __get_user(regs->d1, &gregs[1]);
+       err |= __get_user(regs->d2, &gregs[2]);
+       err |= __get_user(regs->d3, &gregs[3]);
+       err |= __get_user(regs->d4, &gregs[4]);
+       err |= __get_user(regs->d5, &gregs[5]);
+       err |= __get_user(sw->d6, &gregs[6]);
+       err |= __get_user(sw->d7, &gregs[7]);
+       err |= __get_user(regs->a0, &gregs[8]);
+       err |= __get_user(regs->a1, &gregs[9]);
+       err |= __get_user(regs->a2, &gregs[10]);
+       err |= __get_user(sw->a3, &gregs[11]);
+       err |= __get_user(sw->a4, &gregs[12]);
+       err |= __get_user(sw->a5, &gregs[13]);
+       err |= __get_user(sw->a6, &gregs[14]);
+       err |= __get_user(usp, &gregs[15]);
+       wrusp(usp);
+       err |= __get_user(regs->pc, &gregs[16]);
+       err |= __get_user(temp, &gregs[17]);
+       regs->sr = (regs->sr & 0xff00) | (temp & 0xff);
+       regs->orig_d0 = -1;             /* disable syscall checks */
+       err |= __get_user(temp, &uc->uc_formatvec);
+
+       err |= rt_restore_fpu_state(uc);
+
+       if (err || do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT)
+               goto badframe;
+
+       if (mangle_kernel_stack(regs, temp, &uc->uc_extra))
+               goto badframe;
+
+       return 0;
+
+badframe:
+       return 1;
+}
+
+asmlinkage int do_sigreturn(unsigned long __unused)
+{
+       struct switch_stack *sw = (struct switch_stack *) &__unused;
+       struct pt_regs *regs = (struct pt_regs *) (sw + 1);
+       unsigned long usp = rdusp();
+       struct sigframe __user *frame = (struct sigframe __user *)(usp - 4);
+       sigset_t set;
+
+       if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+               goto badframe;
+       if (__get_user(set.sig[0], &frame->sc.sc_mask) ||
+           (_NSIG_WORDS > 1 &&
+            __copy_from_user(&set.sig[1], &frame->extramask,
+                             sizeof(frame->extramask))))
+               goto badframe;
+
+       sigdelsetmask(&set, ~_BLOCKABLE);
+       current->blocked = set;
+       recalc_sigpending();
+
+       if (restore_sigcontext(regs, &frame->sc, frame + 1))
+               goto badframe;
+       return regs->d0;
+
+badframe:
+       force_sig(SIGSEGV, current);
+       return 0;
+}
+
+asmlinkage int do_rt_sigreturn(unsigned long __unused)
+{
+       struct switch_stack *sw = (struct switch_stack *) &__unused;
+       struct pt_regs *regs = (struct pt_regs *) (sw + 1);
+       unsigned long usp = rdusp();
+       struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4);
+       sigset_t set;
+
+       if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+               goto badframe;
+       if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
+               goto badframe;
+
+       sigdelsetmask(&set, ~_BLOCKABLE);
+       current->blocked = set;
+       recalc_sigpending();
+
+       if (rt_restore_ucontext(regs, sw, &frame->uc))
+               goto badframe;
+       return regs->d0;
+
+badframe:
+       force_sig(SIGSEGV, current);
+       return 0;
+}
+
+/*
+ * Set up a signal frame.
+ */
+
+static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)
+{
+       if (FPU_IS_EMU) {
+               /* save registers */
+               memcpy(sc->sc_fpcntl, current->thread.fpcntl, 12);
+               memcpy(sc->sc_fpregs, current->thread.fp, 24);
+               return;
+       }
+
+       __asm__ volatile (".chip 68k/68881\n\t"
+                         "fsave %0\n\t"
+                         ".chip 68k"
+                         : : "m" (*sc->sc_fpstate) : "memory");
+
+       if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
+               fpu_version = sc->sc_fpstate[0];
+               if (CPU_IS_020_OR_030 &&
+                   regs->vector >= (VEC_FPBRUC * 4) &&
+                   regs->vector <= (VEC_FPNAN * 4)) {
+                       /* Clear pending exception in 68882 idle frame */
+                       if (*(unsigned short *) sc->sc_fpstate == 0x1f38)
+                               sc->sc_fpstate[0x38] |= 1 << 3;
+               }
+               __asm__ volatile (".chip 68k/68881\n\t"
+                                 "fmovemx %%fp0-%%fp1,%0\n\t"
+                                 "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
+                                 ".chip 68k"
+                                 : "=m" (*sc->sc_fpregs),
+                                   "=m" (*sc->sc_fpcntl)
+                                 : /* no inputs */
+                                 : "memory");
+       }
+}
+
+static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs)
+{
+       unsigned char fpstate[FPCONTEXT_SIZE];
+       int context_size = CPU_IS_060 ? 8 : 0;
+       int err = 0;
+
+       if (FPU_IS_EMU) {
+               /* save fpu control register */
+               err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpcntl,
+                               current->thread.fpcntl, 12);
+               /* save all other fpu register */
+               err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpregs,
+                               current->thread.fp, 96);
+               return err;
+       }
+
+       __asm__ volatile (".chip 68k/68881\n\t"
+                         "fsave %0\n\t"
+                         ".chip 68k"
+                         : : "m" (*fpstate) : "memory");
+
+       err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate);
+       if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
+               fpregset_t fpregs;
+               if (!CPU_IS_060)
+                       context_size = fpstate[1];
+               fpu_version = fpstate[0];
+               if (CPU_IS_020_OR_030 &&
+                   regs->vector >= (VEC_FPBRUC * 4) &&
+                   regs->vector <= (VEC_FPNAN * 4)) {
+                       /* Clear pending exception in 68882 idle frame */
+                       if (*(unsigned short *) fpstate == 0x1f38)
+                               fpstate[0x38] |= 1 << 3;
+               }
+               __asm__ volatile (".chip 68k/68881\n\t"
+                                 "fmovemx %%fp0-%%fp7,%0\n\t"
+                                 "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
+                                 ".chip 68k"
+                                 : "=m" (*fpregs.f_fpregs),
+                                   "=m" (*fpregs.f_fpcntl)
+                                 : /* no inputs */
+                                 : "memory");
+               err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs,
+                                   sizeof(fpregs));
+       }
+       if (context_size)
+               err |= copy_to_user((long __user *)&uc->uc_fpstate + 1, fpstate + 4,
+                                   context_size);
+       return err;
+}
+
+static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
+                            unsigned long mask)
+{
+       sc->sc_mask = mask;
+       sc->sc_usp = rdusp();
+       sc->sc_d0 = regs->d0;
+       sc->sc_d1 = regs->d1;
+       sc->sc_a0 = regs->a0;
+       sc->sc_a1 = regs->a1;
+       sc->sc_sr = regs->sr;
+       sc->sc_pc = regs->pc;
+       sc->sc_formatvec = regs->format << 12 | regs->vector;
+       save_fpu_state(sc, regs);
+}
+
+static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs)
+{
+       struct switch_stack *sw = (struct switch_stack *)regs - 1;
+       greg_t __user *gregs = uc->uc_mcontext.gregs;
+       int err = 0;
+
+       err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version);
+       err |= __put_user(regs->d0, &gregs[0]);
+       err |= __put_user(regs->d1, &gregs[1]);
+       err |= __put_user(regs->d2, &gregs[2]);
+       err |= __put_user(regs->d3, &gregs[3]);
+       err |= __put_user(regs->d4, &gregs[4]);
+       err |= __put_user(regs->d5, &gregs[5]);
+       err |= __put_user(sw->d6, &gregs[6]);
+       err |= __put_user(sw->d7, &gregs[7]);
+       err |= __put_user(regs->a0, &gregs[8]);
+       err |= __put_user(regs->a1, &gregs[9]);
+       err |= __put_user(regs->a2, &gregs[10]);
+       err |= __put_user(sw->a3, &gregs[11]);
+       err |= __put_user(sw->a4, &gregs[12]);
+       err |= __put_user(sw->a5, &gregs[13]);
+       err |= __put_user(sw->a6, &gregs[14]);
+       err |= __put_user(rdusp(), &gregs[15]);
+       err |= __put_user(regs->pc, &gregs[16]);
+       err |= __put_user(regs->sr, &gregs[17]);
+       err |= __put_user((regs->format << 12) | regs->vector, &uc->uc_formatvec);
+       err |= rt_save_fpu_state(uc, regs);
+       return err;
+}
+
+static inline void push_cache (unsigned long vaddr)
+{
+       /*
+        * Using the old cache_push_v() was really a big waste.
+        *
+        * What we are trying to do is to flush 8 bytes to ram.
+        * Flushing 2 cache lines of 16 bytes is much cheaper than
+        * flushing 1 or 2 pages, as previously done in
+        * cache_push_v().
+        *                                                     Jes
+        */
+       if (CPU_IS_040) {
+               unsigned long temp;
+
+               __asm__ __volatile__ (".chip 68040\n\t"
+                                     "nop\n\t"
+                                     "ptestr (%1)\n\t"
+                                     "movec %%mmusr,%0\n\t"
+                                     ".chip 68k"
+                                     : "=r" (temp)
+                                     : "a" (vaddr));
+
+               temp &= PAGE_MASK;
+               temp |= vaddr & ~PAGE_MASK;
+
+               __asm__ __volatile__ (".chip 68040\n\t"
+                                     "nop\n\t"
+                                     "cpushl %%bc,(%0)\n\t"
+                                     ".chip 68k"
+                                     : : "a" (temp));
+       }
+       else if (CPU_IS_060) {
+               unsigned long temp;
+               __asm__ __volatile__ (".chip 68060\n\t"
+                                     "plpar (%0)\n\t"
+                                     ".chip 68k"
+                                     : "=a" (temp)
+                                     : "0" (vaddr));
+               __asm__ __volatile__ (".chip 68060\n\t"
+                                     "cpushl %%bc,(%0)\n\t"
+                                     ".chip 68k"
+                                     : : "a" (temp));
+       }
+       else {
+               /*
+                * 68030/68020 have no writeback cache;
+                * still need to clear icache.
+                * Note that vaddr is guaranteed to be long word aligned.
+                */
+               unsigned long temp;
+               asm volatile ("movec %%cacr,%0" : "=r" (temp));
+               temp += 4;
+               asm volatile ("movec %0,%%caar\n\t"
+                             "movec %1,%%cacr"
+                             : : "r" (vaddr), "r" (temp));
+               asm volatile ("movec %0,%%caar\n\t"
+                             "movec %1,%%cacr"
+                             : : "r" (vaddr + 4), "r" (temp));
+       }
+}
+
+static inline void __user *
+get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
+{
+       unsigned long usp;
+
+       /* Default to using normal stack.  */
+       usp = rdusp();
+
+       /* This is the X/Open sanctioned signal stack switching.  */
+       if (ka->sa.sa_flags & SA_ONSTACK) {
+               if (!sas_ss_flags(usp))
+                       usp = current->sas_ss_sp + current->sas_ss_size;
+       }
+       return (void __user *)((usp - frame_size) & -8UL);
+}
+
+static int setup_frame (int sig, struct k_sigaction *ka,
+                        sigset_t *set, struct pt_regs *regs)
+{
+       struct sigframe __user *frame;
+       int fsize = frame_extra_sizes[regs->format];
+       struct sigcontext context;
+       int err = 0;
+
+       if (fsize < 0) {
+#ifdef DEBUG
+               printk ("setup_frame: Unknown frame format %#x\n",
+                       regs->format);
+#endif
+               goto give_sigsegv;
+       }
+
+       frame = get_sigframe(ka, regs, sizeof(*frame) + fsize);
+
+       if (fsize)
+               err |= copy_to_user (frame + 1, regs + 1, fsize);
+
+       err |= __put_user((current_thread_info()->exec_domain
+                          && current_thread_info()->exec_domain->signal_invmap
+                          && sig < 32
+                          ? current_thread_info()->exec_domain->signal_invmap[sig]
+                          : sig),
+                         &frame->sig);
+
+       err |= __put_user(regs->vector, &frame->code);
+       err |= __put_user(&frame->sc, &frame->psc);
+
+       if (_NSIG_WORDS > 1)
+               err |= copy_to_user(frame->extramask, &set->sig[1],
+                                   sizeof(frame->extramask));
+
+       setup_sigcontext(&context, regs, set->sig[0]);
+       err |= copy_to_user (&frame->sc, &context, sizeof(context));
+
+       /* Set up to return from userspace.  */
+       err |= __put_user(frame->retcode, &frame->pretcode);
+       /* moveq #,d0; trap #0 */
+       err |= __put_user(0x70004e40 + (__NR_sigreturn << 16),
+                         (long __user *)(frame->retcode));
+
+       if (err)
+               goto give_sigsegv;
+
+       push_cache ((unsigned long) &frame->retcode);
+
+       /*
+        * Set up registers for signal handler.  All the state we are about
+        * to destroy is successfully copied to sigframe.
+        */
+       wrusp ((unsigned long) frame);
+       regs->pc = (unsigned long) ka->sa.sa_handler;
+
+       /*
+        * This is subtle; if we build more than one sigframe, all but the
+        * first one will see frame format 0 and have fsize == 0, so we won't
+        * screw stkadj.
+        */
+       if (fsize)
+               regs->stkadj = fsize;
+
+       /* Prepare to skip over the extra stuff in the exception frame.  */
+       if (regs->stkadj) {
+               struct pt_regs *tregs =
+                       (struct pt_regs *)((ulong)regs + regs->stkadj);
+#ifdef DEBUG
+               printk("Performing stackadjust=%04x\n", regs->stkadj);
+#endif
+               /* This must be copied with decreasing addresses to
+                   handle overlaps.  */
+               tregs->vector = 0;
+               tregs->format = 0;
+               tregs->pc = regs->pc;
+               tregs->sr = regs->sr;
+       }
+       return 0;
+
+give_sigsegv:
+       force_sigsegv(sig, current);
+       return err;
+}
+
+static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
+                           sigset_t *set, struct pt_regs *regs)
+{
+       struct rt_sigframe __user *frame;
+       int fsize = frame_extra_sizes[regs->format];
+       int err = 0;
+
+       if (fsize < 0) {
+#ifdef DEBUG
+               printk ("setup_frame: Unknown frame format %#x\n",
+                       regs->format);
+#endif
+               goto give_sigsegv;
+       }
+
+       frame = get_sigframe(ka, regs, sizeof(*frame));
+
+       if (fsize)
+               err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize);
+
+       err |= __put_user((current_thread_info()->exec_domain
+                          && current_thread_info()->exec_domain->signal_invmap
+                          && sig < 32
+                          ? current_thread_info()->exec_domain->signal_invmap[sig]
+                          : sig),
+                         &frame->sig);
+       err |= __put_user(&frame->info, &frame->pinfo);
+       err |= __put_user(&frame->uc, &frame->puc);
+       err |= copy_siginfo_to_user(&frame->info, info);
+
+       /* Create the ucontext.  */
+       err |= __put_user(0, &frame->uc.uc_flags);
+       err |= __put_user(NULL, &frame->uc.uc_link);
+       err |= __put_user((void __user *)current->sas_ss_sp,
+                         &frame->uc.uc_stack.ss_sp);
+       err |= __put_user(sas_ss_flags(rdusp()),
+                         &frame->uc.uc_stack.ss_flags);
+       err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+       err |= rt_setup_ucontext(&frame->uc, regs);
+       err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set));
+
+       /* Set up to return from userspace.  */
+       err |= __put_user(frame->retcode, &frame->pretcode);
+#ifdef __mcoldfire__
+       /* movel #__NR_rt_sigreturn,d0; trap #0 */
+       err |= __put_user(0x203c0000, (long __user *)(frame->retcode + 0));
+       err |= __put_user(0x00004e40 + (__NR_rt_sigreturn << 16),
+                         (long __user *)(frame->retcode + 4));
+#else
+       /* moveq #,d0; notb d0; trap #0 */
+       err |= __put_user(0x70004600 + ((__NR_rt_sigreturn ^ 0xff) << 16),
+                         (long __user *)(frame->retcode + 0));
+       err |= __put_user(0x4e40, (short __user *)(frame->retcode + 4));
+#endif
+
+       if (err)
+               goto give_sigsegv;
+
+       push_cache ((unsigned long) &frame->retcode);
+
+       /*
+        * Set up registers for signal handler.  All the state we are about
+        * to destroy is successfully copied to sigframe.
+        */
+       wrusp ((unsigned long) frame);
+       regs->pc = (unsigned long) ka->sa.sa_handler;
+
+       /*
+        * This is subtle; if we build more than one sigframe, all but the
+        * first one will see frame format 0 and have fsize == 0, so we won't
+        * screw stkadj.
+        */
+       if (fsize)
+               regs->stkadj = fsize;
+
+       /* Prepare to skip over the extra stuff in the exception frame.  */
+       if (regs->stkadj) {
+               struct pt_regs *tregs =
+                       (struct pt_regs *)((ulong)regs + regs->stkadj);
+#ifdef DEBUG
+               printk("Performing stackadjust=%04x\n", regs->stkadj);
+#endif
+               /* This must be copied with decreasing addresses to
+                   handle overlaps.  */
+               tregs->vector = 0;
+               tregs->format = 0;
+               tregs->pc = regs->pc;
+               tregs->sr = regs->sr;
+       }
+       return 0;
+
+give_sigsegv:
+       force_sigsegv(sig, current);
+       return err;
+}
+
+static inline void
+handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
+{
+       switch (regs->d0) {
+       case -ERESTARTNOHAND:
+               if (!has_handler)
+                       goto do_restart;
+               regs->d0 = -EINTR;
+               break;
+
+       case -ERESTART_RESTARTBLOCK:
+               if (!has_handler) {
+                       regs->d0 = __NR_restart_syscall;
+                       regs->pc -= 2;
+                       break;
+               }
+               regs->d0 = -EINTR;
+               break;
+
+       case -ERESTARTSYS:
+               if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) {
+                       regs->d0 = -EINTR;
+                       break;
+               }
+       /* fallthrough */
+       case -ERESTARTNOINTR:
+       do_restart:
+               regs->d0 = regs->orig_d0;
+               regs->pc -= 2;
+               break;
+       }
+}
+
+void ptrace_signal_deliver(struct pt_regs *regs, void *cookie)
+{
+       if (regs->orig_d0 < 0)
+               return;
+       switch (regs->d0) {
+       case -ERESTARTNOHAND:
+       case -ERESTARTSYS:
+       case -ERESTARTNOINTR:
+               regs->d0 = regs->orig_d0;
+               regs->orig_d0 = -1;
+               regs->pc -= 2;
+               break;
+       }
+}
+
+/*
+ * OK, we're invoking a handler
+ */
+static void
+handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
+             sigset_t *oldset, struct pt_regs *regs)
+{
+       int err;
+       /* are we from a system call? */
+       if (regs->orig_d0 >= 0)
+               /* If so, check system call restarting.. */
+               handle_restart(regs, ka, 1);
+
+       /* set up the stack frame */
+       if (ka->sa.sa_flags & SA_SIGINFO)
+               err = setup_rt_frame(sig, ka, info, oldset, regs);
+       else
+               err = setup_frame(sig, ka, oldset, regs);
+
+       if (err)
+               return;
+
+       sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
+       if (!(ka->sa.sa_flags & SA_NODEFER))
+               sigaddset(&current->blocked,sig);
+       recalc_sigpending();
+
+       if (test_thread_flag(TIF_DELAYED_TRACE)) {
+               regs->sr &= ~0x8000;
+               send_sig(SIGTRAP, current, 1);
+       }
+
+       clear_thread_flag(TIF_RESTORE_SIGMASK);
+}
+
+/*
+ * Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ */
+asmlinkage void do_signal(struct pt_regs *regs)
+{
+       siginfo_t info;
+       struct k_sigaction ka;
+       int signr;
+       sigset_t *oldset;
+
+       current->thread.esp0 = (unsigned long) regs;
+
+       if (test_thread_flag(TIF_RESTORE_SIGMASK))
+               oldset = &current->saved_sigmask;
+       else
+               oldset = &current->blocked;
+
+       signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+       if (signr > 0) {
+               /* Whee!  Actually deliver the signal.  */
+               handle_signal(signr, &ka, &info, oldset, regs);
+               return;
+       }
+
+       /* Did we come from a system call? */
+       if (regs->orig_d0 >= 0)
+               /* Restart the system call - no handlers present */
+               handle_restart(regs, NULL, 0);
+
+       /* If there's no signal to deliver, we just restore the saved mask.  */
+       if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+               clear_thread_flag(TIF_RESTORE_SIGMASK);
+               sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+       }
+}
index 3db2e7f902aae8edb79209df2352800112f26028..63013df33584d79a8047f623d7f93814b1a31626 100644 (file)
@@ -1,546 +1,5 @@
-/*
- * linux/arch/m68k/kernel/sys_m68k.c
- *
- * This file contains various random system calls that
- * have a non-standard calling sequence on the Linux/m68k
- * platform.
- */
-
-#include <linux/capability.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/smp.h>
-#include <linux/sem.h>
-#include <linux/msg.h>
-#include <linux/shm.h>
-#include <linux/stat.h>
-#include <linux/syscalls.h>
-#include <linux/mman.h>
-#include <linux/file.h>
-#include <linux/ipc.h>
-
-#include <asm/setup.h>
-#include <asm/uaccess.h>
-#include <asm/cachectl.h>
-#include <asm/traps.h>
-#include <asm/page.h>
-#include <asm/unistd.h>
-#include <linux/elf.h>
-#include <asm/tlb.h>
-
-asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address,
-                            unsigned long error_code);
-
-asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
-       unsigned long prot, unsigned long flags,
-       unsigned long fd, unsigned long pgoff)
-{
-       /*
-        * This is wrong for sun3 - there PAGE_SIZE is 8Kb,
-        * so we need to shift the argument down by 1; m68k mmap64(3)
-        * (in libc) expects the last argument of mmap2 in 4Kb units.
-        */
-       return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
-}
-
-/* Convert virtual (user) address VADDR to physical address PADDR */
-#define virt_to_phys_040(vaddr)                                                \
-({                                                                     \
-  unsigned long _mmusr, _paddr;                                                \
-                                                                       \
-  __asm__ __volatile__ (".chip 68040\n\t"                              \
-                       "ptestr (%1)\n\t"                               \
-                       "movec %%mmusr,%0\n\t"                          \
-                       ".chip 68k"                                     \
-                       : "=r" (_mmusr)                                 \
-                       : "a" (vaddr));                                 \
-  _paddr = (_mmusr & MMU_R_040) ? (_mmusr & PAGE_MASK) : 0;            \
-  _paddr;                                                              \
-})
-
-static inline int
-cache_flush_040 (unsigned long addr, int scope, int cache, unsigned long len)
-{
-  unsigned long paddr, i;
-
-  switch (scope)
-    {
-    case FLUSH_SCOPE_ALL:
-      switch (cache)
-       {
-       case FLUSH_CACHE_DATA:
-         /* This nop is needed for some broken versions of the 68040.  */
-         __asm__ __volatile__ ("nop\n\t"
-                               ".chip 68040\n\t"
-                               "cpusha %dc\n\t"
-                               ".chip 68k");
-         break;
-       case FLUSH_CACHE_INSN:
-         __asm__ __volatile__ ("nop\n\t"
-                               ".chip 68040\n\t"
-                               "cpusha %ic\n\t"
-                               ".chip 68k");
-         break;
-       default:
-       case FLUSH_CACHE_BOTH:
-         __asm__ __volatile__ ("nop\n\t"
-                               ".chip 68040\n\t"
-                               "cpusha %bc\n\t"
-                               ".chip 68k");
-         break;
-       }
-      break;
-
-    case FLUSH_SCOPE_LINE:
-      /* Find the physical address of the first mapped page in the
-        address range.  */
-      if ((paddr = virt_to_phys_040(addr))) {
-        paddr += addr & ~(PAGE_MASK | 15);
-        len = (len + (addr & 15) + 15) >> 4;
-      } else {
-       unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK);
-
-       if (len <= tmp)
-         return 0;
-       addr += tmp;
-       len -= tmp;
-       tmp = PAGE_SIZE;
-       for (;;)
-         {
-           if ((paddr = virt_to_phys_040(addr)))
-             break;
-           if (len <= tmp)
-             return 0;
-           addr += tmp;
-           len -= tmp;
-         }
-       len = (len + 15) >> 4;
-      }
-      i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4;
-      while (len--)
-       {
-         switch (cache)
-           {
-           case FLUSH_CACHE_DATA:
-             __asm__ __volatile__ ("nop\n\t"
-                                   ".chip 68040\n\t"
-                                   "cpushl %%dc,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           case FLUSH_CACHE_INSN:
-             __asm__ __volatile__ ("nop\n\t"
-                                   ".chip 68040\n\t"
-                                   "cpushl %%ic,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           default:
-           case FLUSH_CACHE_BOTH:
-             __asm__ __volatile__ ("nop\n\t"
-                                   ".chip 68040\n\t"
-                                   "cpushl %%bc,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           }
-         if (!--i && len)
-           {
-             /*
-              * No need to page align here since it is done by
-              * virt_to_phys_040().
-              */
-             addr += PAGE_SIZE;
-             i = PAGE_SIZE / 16;
-             /* Recompute physical address when crossing a page
-                boundary. */
-             for (;;)
-               {
-                 if ((paddr = virt_to_phys_040(addr)))
-                   break;
-                 if (len <= i)
-                   return 0;
-                 len -= i;
-                 addr += PAGE_SIZE;
-               }
-           }
-         else
-           paddr += 16;
-       }
-      break;
-
-    default:
-    case FLUSH_SCOPE_PAGE:
-      len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1);
-      for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)
-       {
-         if (!(paddr = virt_to_phys_040(addr)))
-           continue;
-         switch (cache)
-           {
-           case FLUSH_CACHE_DATA:
-             __asm__ __volatile__ ("nop\n\t"
-                                   ".chip 68040\n\t"
-                                   "cpushp %%dc,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           case FLUSH_CACHE_INSN:
-             __asm__ __volatile__ ("nop\n\t"
-                                   ".chip 68040\n\t"
-                                   "cpushp %%ic,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           default:
-           case FLUSH_CACHE_BOTH:
-             __asm__ __volatile__ ("nop\n\t"
-                                   ".chip 68040\n\t"
-                                   "cpushp %%bc,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           }
-       }
-      break;
-    }
-  return 0;
-}
-
-#define virt_to_phys_060(vaddr)                                \
-({                                                     \
-  unsigned long paddr;                                 \
-  __asm__ __volatile__ (".chip 68060\n\t"              \
-                       "plpar (%0)\n\t"                \
-                       ".chip 68k"                     \
-                       : "=a" (paddr)                  \
-                       : "0" (vaddr));                 \
-  (paddr); /* XXX */                                   \
-})
-
-static inline int
-cache_flush_060 (unsigned long addr, int scope, int cache, unsigned long len)
-{
-  unsigned long paddr, i;
-
-  /*
-   * 68060 manual says:
-   *  cpush %dc : flush DC, remains valid (with our %cacr setup)
-   *  cpush %ic : invalidate IC
-   *  cpush %bc : flush DC + invalidate IC
-   */
-  switch (scope)
-    {
-    case FLUSH_SCOPE_ALL:
-      switch (cache)
-       {
-       case FLUSH_CACHE_DATA:
-         __asm__ __volatile__ (".chip 68060\n\t"
-                               "cpusha %dc\n\t"
-                               ".chip 68k");
-         break;
-       case FLUSH_CACHE_INSN:
-         __asm__ __volatile__ (".chip 68060\n\t"
-                               "cpusha %ic\n\t"
-                               ".chip 68k");
-         break;
-       default:
-       case FLUSH_CACHE_BOTH:
-         __asm__ __volatile__ (".chip 68060\n\t"
-                               "cpusha %bc\n\t"
-                               ".chip 68k");
-         break;
-       }
-      break;
-
-    case FLUSH_SCOPE_LINE:
-      /* Find the physical address of the first mapped page in the
-        address range.  */
-      len += addr & 15;
-      addr &= -16;
-      if (!(paddr = virt_to_phys_060(addr))) {
-       unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK);
-
-       if (len <= tmp)
-         return 0;
-       addr += tmp;
-       len -= tmp;
-       tmp = PAGE_SIZE;
-       for (;;)
-         {
-           if ((paddr = virt_to_phys_060(addr)))
-             break;
-           if (len <= tmp)
-             return 0;
-           addr += tmp;
-           len -= tmp;
-         }
-      }
-      len = (len + 15) >> 4;
-      i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4;
-      while (len--)
-       {
-         switch (cache)
-           {
-           case FLUSH_CACHE_DATA:
-             __asm__ __volatile__ (".chip 68060\n\t"
-                                   "cpushl %%dc,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           case FLUSH_CACHE_INSN:
-             __asm__ __volatile__ (".chip 68060\n\t"
-                                   "cpushl %%ic,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           default:
-           case FLUSH_CACHE_BOTH:
-             __asm__ __volatile__ (".chip 68060\n\t"
-                                   "cpushl %%bc,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           }
-         if (!--i && len)
-           {
-
-             /*
-              * We just want to jump to the first cache line
-              * in the next page.
-              */
-             addr += PAGE_SIZE;
-             addr &= PAGE_MASK;
-
-             i = PAGE_SIZE / 16;
-             /* Recompute physical address when crossing a page
-                boundary. */
-             for (;;)
-               {
-                 if ((paddr = virt_to_phys_060(addr)))
-                   break;
-                 if (len <= i)
-                   return 0;
-                 len -= i;
-                 addr += PAGE_SIZE;
-               }
-           }
-         else
-           paddr += 16;
-       }
-      break;
-
-    default:
-    case FLUSH_SCOPE_PAGE:
-      len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1);
-      addr &= PAGE_MASK;       /* Workaround for bug in some
-                                  revisions of the 68060 */
-      for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)
-       {
-         if (!(paddr = virt_to_phys_060(addr)))
-           continue;
-         switch (cache)
-           {
-           case FLUSH_CACHE_DATA:
-             __asm__ __volatile__ (".chip 68060\n\t"
-                                   "cpushp %%dc,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           case FLUSH_CACHE_INSN:
-             __asm__ __volatile__ (".chip 68060\n\t"
-                                   "cpushp %%ic,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           default:
-           case FLUSH_CACHE_BOTH:
-             __asm__ __volatile__ (".chip 68060\n\t"
-                                   "cpushp %%bc,(%0)\n\t"
-                                   ".chip 68k"
-                                   : : "a" (paddr));
-             break;
-           }
-       }
-      break;
-    }
-  return 0;
-}
-
-/* sys_cacheflush -- flush (part of) the processor cache.  */
-asmlinkage int
-sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
-{
-       struct vm_area_struct *vma;
-       int ret = -EINVAL;
-
-       if (scope < FLUSH_SCOPE_LINE || scope > FLUSH_SCOPE_ALL ||
-           cache & ~FLUSH_CACHE_BOTH)
-               goto out;
-
-       if (scope == FLUSH_SCOPE_ALL) {
-               /* Only the superuser may explicitly flush the whole cache. */
-               ret = -EPERM;
-               if (!capable(CAP_SYS_ADMIN))
-                       goto out;
-       } else {
-               /*
-                * Verify that the specified address region actually belongs
-                * to this process.
-                */
-               vma = find_vma (current->mm, addr);
-               ret = -EINVAL;
-               /* Check for overflow.  */
-               if (addr + len < addr)
-                       goto out;
-               if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end)
-                       goto out;
-       }
-
-       if (CPU_IS_020_OR_030) {
-               if (scope == FLUSH_SCOPE_LINE && len < 256) {
-                       unsigned long cacr;
-                       __asm__ ("movec %%cacr, %0" : "=r" (cacr));
-                       if (cache & FLUSH_CACHE_INSN)
-                               cacr |= 4;
-                       if (cache & FLUSH_CACHE_DATA)
-                               cacr |= 0x400;
-                       len >>= 2;
-                       while (len--) {
-                               __asm__ __volatile__ ("movec %1, %%caar\n\t"
-                                                     "movec %0, %%cacr"
-                                                     : /* no outputs */
-                                                     : "r" (cacr), "r" (addr));
-                               addr += 4;
-                       }
-               } else {
-                       /* Flush the whole cache, even if page granularity requested. */
-                       unsigned long cacr;
-                       __asm__ ("movec %%cacr, %0" : "=r" (cacr));
-                       if (cache & FLUSH_CACHE_INSN)
-                               cacr |= 8;
-                       if (cache & FLUSH_CACHE_DATA)
-                               cacr |= 0x800;
-                       __asm__ __volatile__ ("movec %0, %%cacr" : : "r" (cacr));
-               }
-               ret = 0;
-               goto out;
-       } else {
-           /*
-            * 040 or 060: don't blindly trust 'scope', someone could
-            * try to flush a few megs of memory.
-            */
-
-           if (len>=3*PAGE_SIZE && scope<FLUSH_SCOPE_PAGE)
-               scope=FLUSH_SCOPE_PAGE;
-           if (len>=10*PAGE_SIZE && scope<FLUSH_SCOPE_ALL)
-               scope=FLUSH_SCOPE_ALL;
-           if (CPU_IS_040) {
-               ret = cache_flush_040 (addr, scope, cache, len);
-           } else if (CPU_IS_060) {
-               ret = cache_flush_060 (addr, scope, cache, len);
-           }
-       }
-out:
-       return ret;
-}
-
-asmlinkage int sys_getpagesize(void)
-{
-       return PAGE_SIZE;
-}
-
-/*
- * Do a system call from kernel instead of calling sys_execve so we
- * end up with proper pt_regs.
- */
-int kernel_execve(const char *filename,
-                 const char *const argv[],
-                 const char *const envp[])
-{
-       register long __res asm ("%d0") = __NR_execve;
-       register long __a asm ("%d1") = (long)(filename);
-       register long __b asm ("%d2") = (long)(argv);
-       register long __c asm ("%d3") = (long)(envp);
-       asm volatile ("trap  #0" : "+d" (__res)
-                       : "d" (__a), "d" (__b), "d" (__c));
-       return __res;
-}
-
-asmlinkage unsigned long sys_get_thread_area(void)
-{
-       return current_thread_info()->tp_value;
-}
-
-asmlinkage int sys_set_thread_area(unsigned long tp)
-{
-       current_thread_info()->tp_value = tp;
-       return 0;
-}
-
-/* This syscall gets its arguments in A0 (mem), D2 (oldval) and
-   D1 (newval).  */
-asmlinkage int
-sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5,
-                     unsigned long __user * mem)
-{
-       /* This was borrowed from ARM's implementation.  */
-       for (;;) {
-               struct mm_struct *mm = current->mm;
-               pgd_t *pgd;
-               pmd_t *pmd;
-               pte_t *pte;
-               spinlock_t *ptl;
-               unsigned long mem_value;
-
-               down_read(&mm->mmap_sem);
-               pgd = pgd_offset(mm, (unsigned long)mem);
-               if (!pgd_present(*pgd))
-                       goto bad_access;
-               pmd = pmd_offset(pgd, (unsigned long)mem);
-               if (!pmd_present(*pmd))
-                       goto bad_access;
-               pte = pte_offset_map_lock(mm, pmd, (unsigned long)mem, &ptl);
-               if (!pte_present(*pte) || !pte_dirty(*pte)
-                   || !pte_write(*pte)) {
-                       pte_unmap_unlock(pte, ptl);
-                       goto bad_access;
-               }
-
-               mem_value = *mem;
-               if (mem_value == oldval)
-                       *mem = newval;
-
-               pte_unmap_unlock(pte, ptl);
-               up_read(&mm->mmap_sem);
-               return mem_value;
-
-             bad_access:
-               up_read(&mm->mmap_sem);
-               /* This is not necessarily a bad access, we can get here if
-                  a memory we're trying to write to should be copied-on-write.
-                  Make the kernel do the necessary page stuff, then re-iterate.
-                  Simulate a write access fault to do that.  */
-               {
-                       /* The first argument of the function corresponds to
-                          D1, which is the first field of struct pt_regs.  */
-                       struct pt_regs *fp = (struct pt_regs *)&newval;
-
-                       /* '3' is an RMW flag.  */
-                       if (do_page_fault(fp, (unsigned long)mem, 3))
-                               /* If the do_page_fault() failed, we don't
-                                  have anything meaningful to return.
-                                  There should be a SIGSEGV pending for
-                                  the process.  */
-                               return 0xdeadbeef;
-               }
-       }
-}
-
-asmlinkage int sys_atomic_barrier(void)
-{
-       /* no code needed for uniprocs */
-       return 0;
-}
+#ifdef CONFIG_MMU
+#include "sys_m68k_mm.c"
+#else
+#include "sys_m68k_no.c"
+#endif
diff --git a/arch/m68k/kernel/sys_m68k_mm.c b/arch/m68k/kernel/sys_m68k_mm.c
new file mode 100644 (file)
index 0000000..3db2e7f
--- /dev/null
@@ -0,0 +1,546 @@
+/*
+ * linux/arch/m68k/kernel/sys_m68k.c
+ *
+ * This file contains various random system calls that
+ * have a non-standard calling sequence on the Linux/m68k
+ * platform.
+ */
+
+#include <linux/capability.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/smp.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/stat.h>
+#include <linux/syscalls.h>
+#include <linux/mman.h>
+#include <linux/file.h>
+#include <linux/ipc.h>
+
+#include <asm/setup.h>
+#include <asm/uaccess.h>
+#include <asm/cachectl.h>
+#include <asm/traps.h>
+#include <asm/page.h>
+#include <asm/unistd.h>
+#include <linux/elf.h>
+#include <asm/tlb.h>
+
+asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address,
+                            unsigned long error_code);
+
+asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
+       unsigned long prot, unsigned long flags,
+       unsigned long fd, unsigned long pgoff)
+{
+       /*
+        * This is wrong for sun3 - there PAGE_SIZE is 8Kb,
+        * so we need to shift the argument down by 1; m68k mmap64(3)
+        * (in libc) expects the last argument of mmap2 in 4Kb units.
+        */
+       return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
+}
+
+/* Convert virtual (user) address VADDR to physical address PADDR */
+#define virt_to_phys_040(vaddr)                                                \
+({                                                                     \
+  unsigned long _mmusr, _paddr;                                                \
+                                                                       \
+  __asm__ __volatile__ (".chip 68040\n\t"                              \
+                       "ptestr (%1)\n\t"                               \
+                       "movec %%mmusr,%0\n\t"                          \
+                       ".chip 68k"                                     \
+                       : "=r" (_mmusr)                                 \
+                       : "a" (vaddr));                                 \
+  _paddr = (_mmusr & MMU_R_040) ? (_mmusr & PAGE_MASK) : 0;            \
+  _paddr;                                                              \
+})
+
+static inline int
+cache_flush_040 (unsigned long addr, int scope, int cache, unsigned long len)
+{
+  unsigned long paddr, i;
+
+  switch (scope)
+    {
+    case FLUSH_SCOPE_ALL:
+      switch (cache)
+       {
+       case FLUSH_CACHE_DATA:
+         /* This nop is needed for some broken versions of the 68040.  */
+         __asm__ __volatile__ ("nop\n\t"
+                               ".chip 68040\n\t"
+                               "cpusha %dc\n\t"
+                               ".chip 68k");
+         break;
+       case FLUSH_CACHE_INSN:
+         __asm__ __volatile__ ("nop\n\t"
+                               ".chip 68040\n\t"
+                               "cpusha %ic\n\t"
+                               ".chip 68k");
+         break;
+       default:
+       case FLUSH_CACHE_BOTH:
+         __asm__ __volatile__ ("nop\n\t"
+                               ".chip 68040\n\t"
+                               "cpusha %bc\n\t"
+                               ".chip 68k");
+         break;
+       }
+      break;
+
+    case FLUSH_SCOPE_LINE:
+      /* Find the physical address of the first mapped page in the
+        address range.  */
+      if ((paddr = virt_to_phys_040(addr))) {
+        paddr += addr & ~(PAGE_MASK | 15);
+        len = (len + (addr & 15) + 15) >> 4;
+      } else {
+       unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK);
+
+       if (len <= tmp)
+         return 0;
+       addr += tmp;
+       len -= tmp;
+       tmp = PAGE_SIZE;
+       for (;;)
+         {
+           if ((paddr = virt_to_phys_040(addr)))
+             break;
+           if (len <= tmp)
+             return 0;
+           addr += tmp;
+           len -= tmp;
+         }
+       len = (len + 15) >> 4;
+      }
+      i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4;
+      while (len--)
+       {
+         switch (cache)
+           {
+           case FLUSH_CACHE_DATA:
+             __asm__ __volatile__ ("nop\n\t"
+                                   ".chip 68040\n\t"
+                                   "cpushl %%dc,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           case FLUSH_CACHE_INSN:
+             __asm__ __volatile__ ("nop\n\t"
+                                   ".chip 68040\n\t"
+                                   "cpushl %%ic,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           default:
+           case FLUSH_CACHE_BOTH:
+             __asm__ __volatile__ ("nop\n\t"
+                                   ".chip 68040\n\t"
+                                   "cpushl %%bc,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           }
+         if (!--i && len)
+           {
+             /*
+              * No need to page align here since it is done by
+              * virt_to_phys_040().
+              */
+             addr += PAGE_SIZE;
+             i = PAGE_SIZE / 16;
+             /* Recompute physical address when crossing a page
+                boundary. */
+             for (;;)
+               {
+                 if ((paddr = virt_to_phys_040(addr)))
+                   break;
+                 if (len <= i)
+                   return 0;
+                 len -= i;
+                 addr += PAGE_SIZE;
+               }
+           }
+         else
+           paddr += 16;
+       }
+      break;
+
+    default:
+    case FLUSH_SCOPE_PAGE:
+      len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1);
+      for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)
+       {
+         if (!(paddr = virt_to_phys_040(addr)))
+           continue;
+         switch (cache)
+           {
+           case FLUSH_CACHE_DATA:
+             __asm__ __volatile__ ("nop\n\t"
+                                   ".chip 68040\n\t"
+                                   "cpushp %%dc,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           case FLUSH_CACHE_INSN:
+             __asm__ __volatile__ ("nop\n\t"
+                                   ".chip 68040\n\t"
+                                   "cpushp %%ic,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           default:
+           case FLUSH_CACHE_BOTH:
+             __asm__ __volatile__ ("nop\n\t"
+                                   ".chip 68040\n\t"
+                                   "cpushp %%bc,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           }
+       }
+      break;
+    }
+  return 0;
+}
+
+#define virt_to_phys_060(vaddr)                                \
+({                                                     \
+  unsigned long paddr;                                 \
+  __asm__ __volatile__ (".chip 68060\n\t"              \
+                       "plpar (%0)\n\t"                \
+                       ".chip 68k"                     \
+                       : "=a" (paddr)                  \
+                       : "0" (vaddr));                 \
+  (paddr); /* XXX */                                   \
+})
+
+static inline int
+cache_flush_060 (unsigned long addr, int scope, int cache, unsigned long len)
+{
+  unsigned long paddr, i;
+
+  /*
+   * 68060 manual says:
+   *  cpush %dc : flush DC, remains valid (with our %cacr setup)
+   *  cpush %ic : invalidate IC
+   *  cpush %bc : flush DC + invalidate IC
+   */
+  switch (scope)
+    {
+    case FLUSH_SCOPE_ALL:
+      switch (cache)
+       {
+       case FLUSH_CACHE_DATA:
+         __asm__ __volatile__ (".chip 68060\n\t"
+                               "cpusha %dc\n\t"
+                               ".chip 68k");
+         break;
+       case FLUSH_CACHE_INSN:
+         __asm__ __volatile__ (".chip 68060\n\t"
+                               "cpusha %ic\n\t"
+                               ".chip 68k");
+         break;
+       default:
+       case FLUSH_CACHE_BOTH:
+         __asm__ __volatile__ (".chip 68060\n\t"
+                               "cpusha %bc\n\t"
+                               ".chip 68k");
+         break;
+       }
+      break;
+
+    case FLUSH_SCOPE_LINE:
+      /* Find the physical address of the first mapped page in the
+        address range.  */
+      len += addr & 15;
+      addr &= -16;
+      if (!(paddr = virt_to_phys_060(addr))) {
+       unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK);
+
+       if (len <= tmp)
+         return 0;
+       addr += tmp;
+       len -= tmp;
+       tmp = PAGE_SIZE;
+       for (;;)
+         {
+           if ((paddr = virt_to_phys_060(addr)))
+             break;
+           if (len <= tmp)
+             return 0;
+           addr += tmp;
+           len -= tmp;
+         }
+      }
+      len = (len + 15) >> 4;
+      i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4;
+      while (len--)
+       {
+         switch (cache)
+           {
+           case FLUSH_CACHE_DATA:
+             __asm__ __volatile__ (".chip 68060\n\t"
+                                   "cpushl %%dc,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           case FLUSH_CACHE_INSN:
+             __asm__ __volatile__ (".chip 68060\n\t"
+                                   "cpushl %%ic,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           default:
+           case FLUSH_CACHE_BOTH:
+             __asm__ __volatile__ (".chip 68060\n\t"
+                                   "cpushl %%bc,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           }
+         if (!--i && len)
+           {
+
+             /*
+              * We just want to jump to the first cache line
+              * in the next page.
+              */
+             addr += PAGE_SIZE;
+             addr &= PAGE_MASK;
+
+             i = PAGE_SIZE / 16;
+             /* Recompute physical address when crossing a page
+                boundary. */
+             for (;;)
+               {
+                 if ((paddr = virt_to_phys_060(addr)))
+                   break;
+                 if (len <= i)
+                   return 0;
+                 len -= i;
+                 addr += PAGE_SIZE;
+               }
+           }
+         else
+           paddr += 16;
+       }
+      break;
+
+    default:
+    case FLUSH_SCOPE_PAGE:
+      len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1);
+      addr &= PAGE_MASK;       /* Workaround for bug in some
+                                  revisions of the 68060 */
+      for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE)
+       {
+         if (!(paddr = virt_to_phys_060(addr)))
+           continue;
+         switch (cache)
+           {
+           case FLUSH_CACHE_DATA:
+             __asm__ __volatile__ (".chip 68060\n\t"
+                                   "cpushp %%dc,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           case FLUSH_CACHE_INSN:
+             __asm__ __volatile__ (".chip 68060\n\t"
+                                   "cpushp %%ic,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           default:
+           case FLUSH_CACHE_BOTH:
+             __asm__ __volatile__ (".chip 68060\n\t"
+                                   "cpushp %%bc,(%0)\n\t"
+                                   ".chip 68k"
+                                   : : "a" (paddr));
+             break;
+           }
+       }
+      break;
+    }
+  return 0;
+}
+
+/* sys_cacheflush -- flush (part of) the processor cache.  */
+asmlinkage int
+sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
+{
+       struct vm_area_struct *vma;
+       int ret = -EINVAL;
+
+       if (scope < FLUSH_SCOPE_LINE || scope > FLUSH_SCOPE_ALL ||
+           cache & ~FLUSH_CACHE_BOTH)
+               goto out;
+
+       if (scope == FLUSH_SCOPE_ALL) {
+               /* Only the superuser may explicitly flush the whole cache. */
+               ret = -EPERM;
+               if (!capable(CAP_SYS_ADMIN))
+                       goto out;
+       } else {
+               /*
+                * Verify that the specified address region actually belongs
+                * to this process.
+                */
+               vma = find_vma (current->mm, addr);
+               ret = -EINVAL;
+               /* Check for overflow.  */
+               if (addr + len < addr)
+                       goto out;
+               if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end)
+                       goto out;
+       }
+
+       if (CPU_IS_020_OR_030) {
+               if (scope == FLUSH_SCOPE_LINE && len < 256) {
+                       unsigned long cacr;
+                       __asm__ ("movec %%cacr, %0" : "=r" (cacr));
+                       if (cache & FLUSH_CACHE_INSN)
+                               cacr |= 4;
+                       if (cache & FLUSH_CACHE_DATA)
+                               cacr |= 0x400;
+                       len >>= 2;
+                       while (len--) {
+                               __asm__ __volatile__ ("movec %1, %%caar\n\t"
+                                                     "movec %0, %%cacr"
+                                                     : /* no outputs */
+                                                     : "r" (cacr), "r" (addr));
+                               addr += 4;
+                       }
+               } else {
+                       /* Flush the whole cache, even if page granularity requested. */
+                       unsigned long cacr;
+                       __asm__ ("movec %%cacr, %0" : "=r" (cacr));
+                       if (cache & FLUSH_CACHE_INSN)
+                               cacr |= 8;
+                       if (cache & FLUSH_CACHE_DATA)
+                               cacr |= 0x800;
+                       __asm__ __volatile__ ("movec %0, %%cacr" : : "r" (cacr));
+               }
+               ret = 0;
+               goto out;
+       } else {
+           /*
+            * 040 or 060: don't blindly trust 'scope', someone could
+            * try to flush a few megs of memory.
+            */
+
+           if (len>=3*PAGE_SIZE && scope<FLUSH_SCOPE_PAGE)
+               scope=FLUSH_SCOPE_PAGE;
+           if (len>=10*PAGE_SIZE && scope<FLUSH_SCOPE_ALL)
+               scope=FLUSH_SCOPE_ALL;
+           if (CPU_IS_040) {
+               ret = cache_flush_040 (addr, scope, cache, len);
+           } else if (CPU_IS_060) {
+               ret = cache_flush_060 (addr, scope, cache, len);
+           }
+       }
+out:
+       return ret;
+}
+
+asmlinkage int sys_getpagesize(void)
+{
+       return PAGE_SIZE;
+}
+
+/*
+ * Do a system call from kernel instead of calling sys_execve so we
+ * end up with proper pt_regs.
+ */
+int kernel_execve(const char *filename,
+                 const char *const argv[],
+                 const char *const envp[])
+{
+       register long __res asm ("%d0") = __NR_execve;
+       register long __a asm ("%d1") = (long)(filename);
+       register long __b asm ("%d2") = (long)(argv);
+       register long __c asm ("%d3") = (long)(envp);
+       asm volatile ("trap  #0" : "+d" (__res)
+                       : "d" (__a), "d" (__b), "d" (__c));
+       return __res;
+}
+
+asmlinkage unsigned long sys_get_thread_area(void)
+{
+       return current_thread_info()->tp_value;
+}
+
+asmlinkage int sys_set_thread_area(unsigned long tp)
+{
+       current_thread_info()->tp_value = tp;
+       return 0;
+}
+
+/* This syscall gets its arguments in A0 (mem), D2 (oldval) and
+   D1 (newval).  */
+asmlinkage int
+sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5,
+                     unsigned long __user * mem)
+{
+       /* This was borrowed from ARM's implementation.  */
+       for (;;) {
+               struct mm_struct *mm = current->mm;
+               pgd_t *pgd;
+               pmd_t *pmd;
+               pte_t *pte;
+               spinlock_t *ptl;
+               unsigned long mem_value;
+
+               down_read(&mm->mmap_sem);
+               pgd = pgd_offset(mm, (unsigned long)mem);
+               if (!pgd_present(*pgd))
+                       goto bad_access;
+               pmd = pmd_offset(pgd, (unsigned long)mem);
+               if (!pmd_present(*pmd))
+                       goto bad_access;
+               pte = pte_offset_map_lock(mm, pmd, (unsigned long)mem, &ptl);
+               if (!pte_present(*pte) || !pte_dirty(*pte)
+                   || !pte_write(*pte)) {
+                       pte_unmap_unlock(pte, ptl);
+                       goto bad_access;
+               }
+
+               mem_value = *mem;
+               if (mem_value == oldval)
+                       *mem = newval;
+
+               pte_unmap_unlock(pte, ptl);
+               up_read(&mm->mmap_sem);
+               return mem_value;
+
+             bad_access:
+               up_read(&mm->mmap_sem);
+               /* This is not necessarily a bad access, we can get here if
+                  a memory we're trying to write to should be copied-on-write.
+                  Make the kernel do the necessary page stuff, then re-iterate.
+                  Simulate a write access fault to do that.  */
+               {
+                       /* The first argument of the function corresponds to
+                          D1, which is the first field of struct pt_regs.  */
+                       struct pt_regs *fp = (struct pt_regs *)&newval;
+
+                       /* '3' is an RMW flag.  */
+                       if (do_page_fault(fp, (unsigned long)mem, 3))
+                               /* If the do_page_fault() failed, we don't
+                                  have anything meaningful to return.
+                                  There should be a SIGSEGV pending for
+                                  the process.  */
+                               return 0xdeadbeef;
+               }
+       }
+}
+
+asmlinkage int sys_atomic_barrier(void)
+{
+       /* no code needed for uniprocs */
+       return 0;
+}
index 18b34ee5db3bb94f9fadd5d5e2935a3056dc39e5..a5cf40c26de58abc6c89caa9d800e51ed0095c07 100644 (file)
@@ -1,114 +1,5 @@
-/*
- *  linux/arch/m68k/kernel/time.c
- *
- *  Copyright (C) 1991, 1992, 1995  Linus Torvalds
- *
- * This file contains the m68k-specific time handling details.
- * Most of the stuff is located in the machine specific files.
- *
- * 1997-09-10  Updated NTP code according to technical memorandum Jan '96
- *             "A Kernel Model for Precision Timekeeping" by Dave Mills
- */
-
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/rtc.h>
-#include <linux/platform_device.h>
-
-#include <asm/machdep.h>
-#include <asm/io.h>
-#include <asm/irq_regs.h>
-
-#include <linux/time.h>
-#include <linux/timex.h>
-#include <linux/profile.h>
-
-static inline int set_rtc_mmss(unsigned long nowtime)
-{
-  if (mach_set_clock_mmss)
-    return mach_set_clock_mmss (nowtime);
-  return -1;
-}
-
-/*
- * timer_interrupt() needs to keep up the real-time clock,
- * as well as call the "xtime_update()" routine every clocktick
- */
-static irqreturn_t timer_interrupt(int irq, void *dummy)
-{
-       xtime_update(1);
-       update_process_times(user_mode(get_irq_regs()));
-       profile_tick(CPU_PROFILING);
-
-#ifdef CONFIG_HEARTBEAT
-       /* use power LED as a heartbeat instead -- much more useful
-          for debugging -- based on the version for PReP by Cort */
-       /* acts like an actual heart beat -- ie thump-thump-pause... */
-       if (mach_heartbeat) {
-           static unsigned cnt = 0, period = 0, dist = 0;
-
-           if (cnt == 0 || cnt == dist)
-               mach_heartbeat( 1 );
-           else if (cnt == 7 || cnt == dist+7)
-               mach_heartbeat( 0 );
-
-           if (++cnt > period) {
-               cnt = 0;
-               /* The hyperbolic function below modifies the heartbeat period
-                * length in dependency of the current (5min) load. It goes
-                * through the points f(0)=126, f(1)=86, f(5)=51,
-                * f(inf)->30. */
-               period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30;
-               dist = period / 4;
-           }
-       }
-#endif /* CONFIG_HEARTBEAT */
-       return IRQ_HANDLED;
-}
-
-void read_persistent_clock(struct timespec *ts)
-{
-       struct rtc_time time;
-       ts->tv_sec = 0;
-       ts->tv_nsec = 0;
-
-       if (mach_hwclk) {
-               mach_hwclk(0, &time);
-
-               if ((time.tm_year += 1900) < 1970)
-                       time.tm_year += 100;
-               ts->tv_sec = mktime(time.tm_year, time.tm_mon, time.tm_mday,
-                                     time.tm_hour, time.tm_min, time.tm_sec);
-       }
-}
-
-void __init time_init(void)
-{
-       mach_sched_init(timer_interrupt);
-}
-
-u32 arch_gettimeoffset(void)
-{
-       return mach_gettimeoffset() * 1000;
-}
-
-static int __init rtc_init(void)
-{
-       struct platform_device *pdev;
-
-       if (!mach_hwclk)
-               return -ENODEV;
-
-       pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
-       if (IS_ERR(pdev))
-               return PTR_ERR(pdev);
-
-       return 0;
-}
-
-module_init(rtc_init);
+#ifdef CONFIG_MMU
+#include "time_mm.c"
+#else
+#include "time_no.c"
+#endif
diff --git a/arch/m68k/kernel/time_mm.c b/arch/m68k/kernel/time_mm.c
new file mode 100644 (file)
index 0000000..18b34ee
--- /dev/null
@@ -0,0 +1,114 @@
+/*
+ *  linux/arch/m68k/kernel/time.c
+ *
+ *  Copyright (C) 1991, 1992, 1995  Linus Torvalds
+ *
+ * This file contains the m68k-specific time handling details.
+ * Most of the stuff is located in the machine specific files.
+ *
+ * 1997-09-10  Updated NTP code according to technical memorandum Jan '96
+ *             "A Kernel Model for Precision Timekeeping" by Dave Mills
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/rtc.h>
+#include <linux/platform_device.h>
+
+#include <asm/machdep.h>
+#include <asm/io.h>
+#include <asm/irq_regs.h>
+
+#include <linux/time.h>
+#include <linux/timex.h>
+#include <linux/profile.h>
+
+static inline int set_rtc_mmss(unsigned long nowtime)
+{
+  if (mach_set_clock_mmss)
+    return mach_set_clock_mmss (nowtime);
+  return -1;
+}
+
+/*
+ * timer_interrupt() needs to keep up the real-time clock,
+ * as well as call the "xtime_update()" routine every clocktick
+ */
+static irqreturn_t timer_interrupt(int irq, void *dummy)
+{
+       xtime_update(1);
+       update_process_times(user_mode(get_irq_regs()));
+       profile_tick(CPU_PROFILING);
+
+#ifdef CONFIG_HEARTBEAT
+       /* use power LED as a heartbeat instead -- much more useful
+          for debugging -- based on the version for PReP by Cort */
+       /* acts like an actual heart beat -- ie thump-thump-pause... */
+       if (mach_heartbeat) {
+           static unsigned cnt = 0, period = 0, dist = 0;
+
+           if (cnt == 0 || cnt == dist)
+               mach_heartbeat( 1 );
+           else if (cnt == 7 || cnt == dist+7)
+               mach_heartbeat( 0 );
+
+           if (++cnt > period) {
+               cnt = 0;
+               /* The hyperbolic function below modifies the heartbeat period
+                * length in dependency of the current (5min) load. It goes
+                * through the points f(0)=126, f(1)=86, f(5)=51,
+                * f(inf)->30. */
+               period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30;
+               dist = period / 4;
+           }
+       }
+#endif /* CONFIG_HEARTBEAT */
+       return IRQ_HANDLED;
+}
+
+void read_persistent_clock(struct timespec *ts)
+{
+       struct rtc_time time;
+       ts->tv_sec = 0;
+       ts->tv_nsec = 0;
+
+       if (mach_hwclk) {
+               mach_hwclk(0, &time);
+
+               if ((time.tm_year += 1900) < 1970)
+                       time.tm_year += 100;
+               ts->tv_sec = mktime(time.tm_year, time.tm_mon, time.tm_mday,
+                                     time.tm_hour, time.tm_min, time.tm_sec);
+       }
+}
+
+void __init time_init(void)
+{
+       mach_sched_init(timer_interrupt);
+}
+
+u32 arch_gettimeoffset(void)
+{
+       return mach_gettimeoffset() * 1000;
+}
+
+static int __init rtc_init(void)
+{
+       struct platform_device *pdev;
+
+       if (!mach_hwclk)
+               return -ENODEV;
+
+       pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
+       if (IS_ERR(pdev))
+               return PTR_ERR(pdev);
+
+       return 0;
+}
+
+module_init(rtc_init);
index 4022bbc288782357fa339c17e2254d6462ca6327..c98add3f5f0f45b106925a4f79be435ee83443c2 100644 (file)
-/*
- *  linux/arch/m68k/kernel/traps.c
- *
- *  Copyright (C) 1993, 1994 by Hamish Macdonald
- *
- *  68040 fixes by Michael Rausch
- *  68040 fixes by Martin Apel
- *  68040 fixes and writeback by Richard Zidlicky
- *  68060 fixes by Roman Hodek
- *  68060 fixes by Jesper Skov
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file COPYING in the main directory of this archive
- * for more details.
- */
-
-/*
- * Sets up all exception vectors
- */
-
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/user.h>
-#include <linux/string.h>
-#include <linux/linkage.h>
-#include <linux/init.h>
-#include <linux/ptrace.h>
-#include <linux/kallsyms.h>
-
-#include <asm/setup.h>
-#include <asm/fpu.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/traps.h>
-#include <asm/pgalloc.h>
-#include <asm/machdep.h>
-#include <asm/siginfo.h>
-
-/* assembler routines */
-asmlinkage void system_call(void);
-asmlinkage void buserr(void);
-asmlinkage void trap(void);
-asmlinkage void nmihandler(void);
-#ifdef CONFIG_M68KFPU_EMU
-asmlinkage void fpu_emu(void);
-#endif
-
-e_vector vectors[256];
-
-/* nmi handler for the Amiga */
-asm(".text\n"
-    __ALIGN_STR "\n"
-    "nmihandler: rte");
-
-/*
- * this must be called very early as the kernel might
- * use some instruction that are emulated on the 060
- * and so we're prepared for early probe attempts (e.g. nf_init).
- */
-void __init base_trap_init(void)
-{
-       if (MACH_IS_SUN3X) {
-               extern e_vector *sun3x_prom_vbr;
-
-               __asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr));
-       }
-
-       /* setup the exception vector table */
-       __asm__ volatile ("movec %0,%%vbr" : : "r" ((void*)vectors));
-
-       if (CPU_IS_060) {
-               /* set up ISP entry points */
-               asmlinkage void unimp_vec(void) asm ("_060_isp_unimp");
-
-               vectors[VEC_UNIMPII] = unimp_vec;
-       }
-
-       vectors[VEC_BUSERR] = buserr;
-       vectors[VEC_ILLEGAL] = trap;
-       vectors[VEC_SYS] = system_call;
-}
-
-void __init trap_init (void)
-{
-       int i;
-
-       for (i = VEC_SPUR; i <= VEC_INT7; i++)
-               vectors[i] = bad_inthandler;
-
-       for (i = 0; i < VEC_USER; i++)
-               if (!vectors[i])
-                       vectors[i] = trap;
-
-       for (i = VEC_USER; i < 256; i++)
-               vectors[i] = bad_inthandler;
-
-#ifdef CONFIG_M68KFPU_EMU
-       if (FPU_IS_EMU)
-               vectors[VEC_LINE11] = fpu_emu;
-#endif
-
-       if (CPU_IS_040 && !FPU_IS_EMU) {
-               /* set up FPSP entry points */
-               asmlinkage void dz_vec(void) asm ("dz");
-               asmlinkage void inex_vec(void) asm ("inex");
-               asmlinkage void ovfl_vec(void) asm ("ovfl");
-               asmlinkage void unfl_vec(void) asm ("unfl");
-               asmlinkage void snan_vec(void) asm ("snan");
-               asmlinkage void operr_vec(void) asm ("operr");
-               asmlinkage void bsun_vec(void) asm ("bsun");
-               asmlinkage void fline_vec(void) asm ("fline");
-               asmlinkage void unsupp_vec(void) asm ("unsupp");
-
-               vectors[VEC_FPDIVZ] = dz_vec;
-               vectors[VEC_FPIR] = inex_vec;
-               vectors[VEC_FPOVER] = ovfl_vec;
-               vectors[VEC_FPUNDER] = unfl_vec;
-               vectors[VEC_FPNAN] = snan_vec;
-               vectors[VEC_FPOE] = operr_vec;
-               vectors[VEC_FPBRUC] = bsun_vec;
-               vectors[VEC_LINE11] = fline_vec;
-               vectors[VEC_FPUNSUP] = unsupp_vec;
-       }
-
-       if (CPU_IS_060 && !FPU_IS_EMU) {
-               /* set up IFPSP entry points */
-               asmlinkage void snan_vec6(void) asm ("_060_fpsp_snan");
-               asmlinkage void operr_vec6(void) asm ("_060_fpsp_operr");
-               asmlinkage void ovfl_vec6(void) asm ("_060_fpsp_ovfl");
-               asmlinkage void unfl_vec6(void) asm ("_060_fpsp_unfl");
-               asmlinkage void dz_vec6(void) asm ("_060_fpsp_dz");
-               asmlinkage void inex_vec6(void) asm ("_060_fpsp_inex");
-               asmlinkage void fline_vec6(void) asm ("_060_fpsp_fline");
-               asmlinkage void unsupp_vec6(void) asm ("_060_fpsp_unsupp");
-               asmlinkage void effadd_vec6(void) asm ("_060_fpsp_effadd");
-
-               vectors[VEC_FPNAN] = snan_vec6;
-               vectors[VEC_FPOE] = operr_vec6;
-               vectors[VEC_FPOVER] = ovfl_vec6;
-               vectors[VEC_FPUNDER] = unfl_vec6;
-               vectors[VEC_FPDIVZ] = dz_vec6;
-               vectors[VEC_FPIR] = inex_vec6;
-               vectors[VEC_LINE11] = fline_vec6;
-               vectors[VEC_FPUNSUP] = unsupp_vec6;
-               vectors[VEC_UNIMPEA] = effadd_vec6;
-       }
-
-        /* if running on an amiga, make the NMI interrupt do nothing */
-       if (MACH_IS_AMIGA) {
-               vectors[VEC_INT7] = nmihandler;
-       }
-}
-
-
-static const char *vec_names[] = {
-       [VEC_RESETSP]   = "RESET SP",
-       [VEC_RESETPC]   = "RESET PC",
-       [VEC_BUSERR]    = "BUS ERROR",
-       [VEC_ADDRERR]   = "ADDRESS ERROR",
-       [VEC_ILLEGAL]   = "ILLEGAL INSTRUCTION",
-       [VEC_ZERODIV]   = "ZERO DIVIDE",
-       [VEC_CHK]       = "CHK",
-       [VEC_TRAP]      = "TRAPcc",
-       [VEC_PRIV]      = "PRIVILEGE VIOLATION",
-       [VEC_TRACE]     = "TRACE",
-       [VEC_LINE10]    = "LINE 1010",
-       [VEC_LINE11]    = "LINE 1111",
-       [VEC_RESV12]    = "UNASSIGNED RESERVED 12",
-       [VEC_COPROC]    = "COPROCESSOR PROTOCOL VIOLATION",
-       [VEC_FORMAT]    = "FORMAT ERROR",
-       [VEC_UNINT]     = "UNINITIALIZED INTERRUPT",
-       [VEC_RESV16]    = "UNASSIGNED RESERVED 16",
-       [VEC_RESV17]    = "UNASSIGNED RESERVED 17",
-       [VEC_RESV18]    = "UNASSIGNED RESERVED 18",
-       [VEC_RESV19]    = "UNASSIGNED RESERVED 19",
-       [VEC_RESV20]    = "UNASSIGNED RESERVED 20",
-       [VEC_RESV21]    = "UNASSIGNED RESERVED 21",
-       [VEC_RESV22]    = "UNASSIGNED RESERVED 22",
-       [VEC_RESV23]    = "UNASSIGNED RESERVED 23",
-       [VEC_SPUR]      = "SPURIOUS INTERRUPT",
-       [VEC_INT1]      = "LEVEL 1 INT",
-       [VEC_INT2]      = "LEVEL 2 INT",
-       [VEC_INT3]      = "LEVEL 3 INT",
-       [VEC_INT4]      = "LEVEL 4 INT",
-       [VEC_INT5]      = "LEVEL 5 INT",
-       [VEC_INT6]      = "LEVEL 6 INT",
-       [VEC_INT7]      = "LEVEL 7 INT",
-       [VEC_SYS]       = "SYSCALL",
-       [VEC_TRAP1]     = "TRAP #1",
-       [VEC_TRAP2]     = "TRAP #2",
-       [VEC_TRAP3]     = "TRAP #3",
-       [VEC_TRAP4]     = "TRAP #4",
-       [VEC_TRAP5]     = "TRAP #5",
-       [VEC_TRAP6]     = "TRAP #6",
-       [VEC_TRAP7]     = "TRAP #7",
-       [VEC_TRAP8]     = "TRAP #8",
-       [VEC_TRAP9]     = "TRAP #9",
-       [VEC_TRAP10]    = "TRAP #10",
-       [VEC_TRAP11]    = "TRAP #11",
-       [VEC_TRAP12]    = "TRAP #12",
-       [VEC_TRAP13]    = "TRAP #13",
-       [VEC_TRAP14]    = "TRAP #14",
-       [VEC_TRAP15]    = "TRAP #15",
-       [VEC_FPBRUC]    = "FPCP BSUN",
-       [VEC_FPIR]      = "FPCP INEXACT",
-       [VEC_FPDIVZ]    = "FPCP DIV BY 0",
-       [VEC_FPUNDER]   = "FPCP UNDERFLOW",
-       [VEC_FPOE]      = "FPCP OPERAND ERROR",
-       [VEC_FPOVER]    = "FPCP OVERFLOW",
-       [VEC_FPNAN]     = "FPCP SNAN",
-       [VEC_FPUNSUP]   = "FPCP UNSUPPORTED OPERATION",
-       [VEC_MMUCFG]    = "MMU CONFIGURATION ERROR",
-       [VEC_MMUILL]    = "MMU ILLEGAL OPERATION ERROR",
-       [VEC_MMUACC]    = "MMU ACCESS LEVEL VIOLATION ERROR",
-       [VEC_RESV59]    = "UNASSIGNED RESERVED 59",
-       [VEC_UNIMPEA]   = "UNASSIGNED RESERVED 60",
-       [VEC_UNIMPII]   = "UNASSIGNED RESERVED 61",
-       [VEC_RESV62]    = "UNASSIGNED RESERVED 62",
-       [VEC_RESV63]    = "UNASSIGNED RESERVED 63",
-};
-
-static const char *space_names[] = {
-       [0]             = "Space 0",
-       [USER_DATA]     = "User Data",
-       [USER_PROGRAM]  = "User Program",
-#ifndef CONFIG_SUN3
-       [3]             = "Space 3",
+#ifdef CONFIG_MMU
+#include "traps_mm.c"
 #else
-       [FC_CONTROL]    = "Control",
-#endif
-       [4]             = "Space 4",
-       [SUPER_DATA]    = "Super Data",
-       [SUPER_PROGRAM] = "Super Program",
-       [CPU_SPACE]     = "CPU"
-};
-
-void die_if_kernel(char *,struct pt_regs *,int);
-asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address,
-                             unsigned long error_code);
-int send_fault_sig(struct pt_regs *regs);
-
-asmlinkage void trap_c(struct frame *fp);
-
-#if defined (CONFIG_M68060)
-static inline void access_error060 (struct frame *fp)
-{
-       unsigned long fslw = fp->un.fmt4.pc; /* is really FSLW for access error */
-
-#ifdef DEBUG
-       printk("fslw=%#lx, fa=%#lx\n", fslw, fp->un.fmt4.effaddr);
-#endif
-
-       if (fslw & MMU060_BPE) {
-               /* branch prediction error -> clear branch cache */
-               __asm__ __volatile__ ("movec %/cacr,%/d0\n\t"
-                                     "orl   #0x00400000,%/d0\n\t"
-                                     "movec %/d0,%/cacr"
-                                     : : : "d0" );
-               /* return if there's no other error */
-               if (!(fslw & MMU060_ERR_BITS) && !(fslw & MMU060_SEE))
-                       return;
-       }
-
-       if (fslw & (MMU060_DESC_ERR | MMU060_WP | MMU060_SP)) {
-               unsigned long errorcode;
-               unsigned long addr = fp->un.fmt4.effaddr;
-
-               if (fslw & MMU060_MA)
-                       addr = (addr + PAGE_SIZE - 1) & PAGE_MASK;
-
-               errorcode = 1;
-               if (fslw & MMU060_DESC_ERR) {
-                       __flush_tlb040_one(addr);
-                       errorcode = 0;
-               }
-               if (fslw & MMU060_W)
-                       errorcode |= 2;
-#ifdef DEBUG
-               printk("errorcode = %d\n", errorcode );
-#endif
-               do_page_fault(&fp->ptregs, addr, errorcode);
-       } else if (fslw & (MMU060_SEE)){
-               /* Software Emulation Error.
-                * fault during mem_read/mem_write in ifpsp060/os.S
-                */
-               send_fault_sig(&fp->ptregs);
-       } else if (!(fslw & (MMU060_RE|MMU060_WE)) ||
-                  send_fault_sig(&fp->ptregs) > 0) {
-               printk("pc=%#lx, fa=%#lx\n", fp->ptregs.pc, fp->un.fmt4.effaddr);
-               printk( "68060 access error, fslw=%lx\n", fslw );
-               trap_c( fp );
-       }
-}
-#endif /* CONFIG_M68060 */
-
-#if defined (CONFIG_M68040)
-static inline unsigned long probe040(int iswrite, unsigned long addr, int wbs)
-{
-       unsigned long mmusr;
-       mm_segment_t old_fs = get_fs();
-
-       set_fs(MAKE_MM_SEG(wbs));
-
-       if (iswrite)
-               asm volatile (".chip 68040; ptestw (%0); .chip 68k" : : "a" (addr));
-       else
-               asm volatile (".chip 68040; ptestr (%0); .chip 68k" : : "a" (addr));
-
-       asm volatile (".chip 68040; movec %%mmusr,%0; .chip 68k" : "=r" (mmusr));
-
-       set_fs(old_fs);
-
-       return mmusr;
-}
-
-static inline int do_040writeback1(unsigned short wbs, unsigned long wba,
-                                  unsigned long wbd)
-{
-       int res = 0;
-       mm_segment_t old_fs = get_fs();
-
-       /* set_fs can not be moved, otherwise put_user() may oops */
-       set_fs(MAKE_MM_SEG(wbs));
-
-       switch (wbs & WBSIZ_040) {
-       case BA_SIZE_BYTE:
-               res = put_user(wbd & 0xff, (char __user *)wba);
-               break;
-       case BA_SIZE_WORD:
-               res = put_user(wbd & 0xffff, (short __user *)wba);
-               break;
-       case BA_SIZE_LONG:
-               res = put_user(wbd, (int __user *)wba);
-               break;
-       }
-
-       /* set_fs can not be moved, otherwise put_user() may oops */
-       set_fs(old_fs);
-
-
-#ifdef DEBUG
-       printk("do_040writeback1, res=%d\n",res);
-#endif
-
-       return res;
-}
-
-/* after an exception in a writeback the stack frame corresponding
- * to that exception is discarded, set a few bits in the old frame
- * to simulate what it should look like
- */
-static inline void fix_xframe040(struct frame *fp, unsigned long wba, unsigned short wbs)
-{
-       fp->un.fmt7.faddr = wba;
-       fp->un.fmt7.ssw = wbs & 0xff;
-       if (wba != current->thread.faddr)
-           fp->un.fmt7.ssw |= MA_040;
-}
-
-static inline void do_040writebacks(struct frame *fp)
-{
-       int res = 0;
-#if 0
-       if (fp->un.fmt7.wb1s & WBV_040)
-               printk("access_error040: cannot handle 1st writeback. oops.\n");
-#endif
-
-       if ((fp->un.fmt7.wb2s & WBV_040) &&
-           !(fp->un.fmt7.wb2s & WBTT_040)) {
-               res = do_040writeback1(fp->un.fmt7.wb2s, fp->un.fmt7.wb2a,
-                                      fp->un.fmt7.wb2d);
-               if (res)
-                       fix_xframe040(fp, fp->un.fmt7.wb2a, fp->un.fmt7.wb2s);
-               else
-                       fp->un.fmt7.wb2s = 0;
-       }
-
-       /* do the 2nd wb only if the first one was successful (except for a kernel wb) */
-       if (fp->un.fmt7.wb3s & WBV_040 && (!res || fp->un.fmt7.wb3s & 4)) {
-               res = do_040writeback1(fp->un.fmt7.wb3s, fp->un.fmt7.wb3a,
-                                      fp->un.fmt7.wb3d);
-               if (res)
-                   {
-                       fix_xframe040(fp, fp->un.fmt7.wb3a, fp->un.fmt7.wb3s);
-
-                       fp->un.fmt7.wb2s = fp->un.fmt7.wb3s;
-                       fp->un.fmt7.wb3s &= (~WBV_040);
-                       fp->un.fmt7.wb2a = fp->un.fmt7.wb3a;
-                       fp->un.fmt7.wb2d = fp->un.fmt7.wb3d;
-                   }
-               else
-                       fp->un.fmt7.wb3s = 0;
-       }
-
-       if (res)
-               send_fault_sig(&fp->ptregs);
-}
-
-/*
- * called from sigreturn(), must ensure userspace code didn't
- * manipulate exception frame to circumvent protection, then complete
- * pending writebacks
- * we just clear TM2 to turn it into a userspace access
- */
-asmlinkage void berr_040cleanup(struct frame *fp)
-{
-       fp->un.fmt7.wb2s &= ~4;
-       fp->un.fmt7.wb3s &= ~4;
-
-       do_040writebacks(fp);
-}
-
-static inline void access_error040(struct frame *fp)
-{
-       unsigned short ssw = fp->un.fmt7.ssw;
-       unsigned long mmusr;
-
-#ifdef DEBUG
-       printk("ssw=%#x, fa=%#lx\n", ssw, fp->un.fmt7.faddr);
-        printk("wb1s=%#x, wb2s=%#x, wb3s=%#x\n", fp->un.fmt7.wb1s,
-               fp->un.fmt7.wb2s, fp->un.fmt7.wb3s);
-       printk ("wb2a=%lx, wb3a=%lx, wb2d=%lx, wb3d=%lx\n",
-               fp->un.fmt7.wb2a, fp->un.fmt7.wb3a,
-               fp->un.fmt7.wb2d, fp->un.fmt7.wb3d);
-#endif
-
-       if (ssw & ATC_040) {
-               unsigned long addr = fp->un.fmt7.faddr;
-               unsigned long errorcode;
-
-               /*
-                * The MMU status has to be determined AFTER the address
-                * has been corrected if there was a misaligned access (MA).
-                */
-               if (ssw & MA_040)
-                       addr = (addr + 7) & -8;
-
-               /* MMU error, get the MMUSR info for this access */
-               mmusr = probe040(!(ssw & RW_040), addr, ssw);
-#ifdef DEBUG
-               printk("mmusr = %lx\n", mmusr);
-#endif
-               errorcode = 1;
-               if (!(mmusr & MMU_R_040)) {
-                       /* clear the invalid atc entry */
-                       __flush_tlb040_one(addr);
-                       errorcode = 0;
-               }
-
-               /* despite what documentation seems to say, RMW
-                * accesses have always both the LK and RW bits set */
-               if (!(ssw & RW_040) || (ssw & LK_040))
-                       errorcode |= 2;
-
-               if (do_page_fault(&fp->ptregs, addr, errorcode)) {
-#ifdef DEBUG
-                       printk("do_page_fault() !=0\n");
-#endif
-                       if (user_mode(&fp->ptregs)){
-                               /* delay writebacks after signal delivery */
-#ifdef DEBUG
-                               printk(".. was usermode - return\n");
-#endif
-                               return;
-                       }
-                       /* disable writeback into user space from kernel
-                        * (if do_page_fault didn't fix the mapping,
-                         * the writeback won't do good)
-                        */
-disable_wb:
-#ifdef DEBUG
-                       printk(".. disabling wb2\n");
-#endif
-                       if (fp->un.fmt7.wb2a == fp->un.fmt7.faddr)
-                               fp->un.fmt7.wb2s &= ~WBV_040;
-                       if (fp->un.fmt7.wb3a == fp->un.fmt7.faddr)
-                               fp->un.fmt7.wb3s &= ~WBV_040;
-               }
-       } else {
-               /* In case of a bus error we either kill the process or expect
-                * the kernel to catch the fault, which then is also responsible
-                * for cleaning up the mess.
-                */
-               current->thread.signo = SIGBUS;
-               current->thread.faddr = fp->un.fmt7.faddr;
-               if (send_fault_sig(&fp->ptregs) >= 0)
-                       printk("68040 bus error (ssw=%x, faddr=%lx)\n", ssw,
-                              fp->un.fmt7.faddr);
-               goto disable_wb;
-       }
-
-       do_040writebacks(fp);
-}
-#endif /* CONFIG_M68040 */
-
-#if defined(CONFIG_SUN3)
-#include <asm/sun3mmu.h>
-
-extern int mmu_emu_handle_fault (unsigned long, int, int);
-
-/* sun3 version of bus_error030 */
-
-static inline void bus_error030 (struct frame *fp)
-{
-       unsigned char buserr_type = sun3_get_buserr ();
-       unsigned long addr, errorcode;
-       unsigned short ssw = fp->un.fmtb.ssw;
-       extern unsigned long _sun3_map_test_start, _sun3_map_test_end;
-
-#ifdef DEBUG
-       if (ssw & (FC | FB))
-               printk ("Instruction fault at %#010lx\n",
-                       ssw & FC ?
-                       fp->ptregs.format == 0xa ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2
-                       :
-                       fp->ptregs.format == 0xa ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr);
-       if (ssw & DF)
-               printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n",
-                       ssw & RW ? "read" : "write",
-                       fp->un.fmtb.daddr,
-                       space_names[ssw & DFC], fp->ptregs.pc);
-#endif
-
-       /*
-        * Check if this page should be demand-mapped. This needs to go before
-        * the testing for a bad kernel-space access (demand-mapping applies
-        * to kernel accesses too).
-        */
-
-       if ((ssw & DF)
-           && (buserr_type & (SUN3_BUSERR_PROTERR | SUN3_BUSERR_INVALID))) {
-               if (mmu_emu_handle_fault (fp->un.fmtb.daddr, ssw & RW, 0))
-                       return;
-       }
-
-       /* Check for kernel-space pagefault (BAD). */
-       if (fp->ptregs.sr & PS_S) {
-               /* kernel fault must be a data fault to user space */
-               if (! ((ssw & DF) && ((ssw & DFC) == USER_DATA))) {
-                    // try checking the kernel mappings before surrender
-                    if (mmu_emu_handle_fault (fp->un.fmtb.daddr, ssw & RW, 1))
-                         return;
-                       /* instruction fault or kernel data fault! */
-                       if (ssw & (FC | FB))
-                               printk ("Instruction fault at %#010lx\n",
-                                       fp->ptregs.pc);
-                       if (ssw & DF) {
-                               /* was this fault incurred testing bus mappings? */
-                               if((fp->ptregs.pc >= (unsigned long)&_sun3_map_test_start) &&
-                                  (fp->ptregs.pc <= (unsigned long)&_sun3_map_test_end)) {
-                                       send_fault_sig(&fp->ptregs);
-                                       return;
-                               }
-
-                               printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n",
-                                       ssw & RW ? "read" : "write",
-                                       fp->un.fmtb.daddr,
-                                       space_names[ssw & DFC], fp->ptregs.pc);
-                       }
-                       printk ("BAD KERNEL BUSERR\n");
-
-                       die_if_kernel("Oops", &fp->ptregs,0);
-                       force_sig(SIGKILL, current);
-                       return;
-               }
-       } else {
-               /* user fault */
-               if (!(ssw & (FC | FB)) && !(ssw & DF))
-                       /* not an instruction fault or data fault! BAD */
-                       panic ("USER BUSERR w/o instruction or data fault");
-       }
-
-
-       /* First handle the data fault, if any.  */
-       if (ssw & DF) {
-               addr = fp->un.fmtb.daddr;
-
-// errorcode bit 0:    0 -> no page            1 -> protection fault
-// errorcode bit 1:    0 -> read fault         1 -> write fault
-
-// (buserr_type & SUN3_BUSERR_PROTERR) -> protection fault
-// (buserr_type & SUN3_BUSERR_INVALID) -> invalid page fault
-
-               if (buserr_type & SUN3_BUSERR_PROTERR)
-                       errorcode = 0x01;
-               else if (buserr_type & SUN3_BUSERR_INVALID)
-                       errorcode = 0x00;
-               else {
-#ifdef DEBUG
-                       printk ("*** unexpected busfault type=%#04x\n", buserr_type);
-                       printk ("invalid %s access at %#lx from pc %#lx\n",
-                               !(ssw & RW) ? "write" : "read", addr,
-                               fp->ptregs.pc);
-#endif
-                       die_if_kernel ("Oops", &fp->ptregs, buserr_type);
-                       force_sig (SIGBUS, current);
-                       return;
-               }
-
-//todo: wtf is RM bit? --m
-               if (!(ssw & RW) || ssw & RM)
-                       errorcode |= 0x02;
-
-               /* Handle page fault. */
-               do_page_fault (&fp->ptregs, addr, errorcode);
-
-               /* Retry the data fault now. */
-               return;
-       }
-
-       /* Now handle the instruction fault. */
-
-       /* Get the fault address. */
-       if (fp->ptregs.format == 0xA)
-               addr = fp->ptregs.pc + 4;
-       else
-               addr = fp->un.fmtb.baddr;
-       if (ssw & FC)
-               addr -= 2;
-
-       if (buserr_type & SUN3_BUSERR_INVALID) {
-               if (!mmu_emu_handle_fault (fp->un.fmtb.daddr, 1, 0))
-                       do_page_fault (&fp->ptregs, addr, 0);
-       } else {
-#ifdef DEBUG
-               printk ("protection fault on insn access (segv).\n");
-#endif
-               force_sig (SIGSEGV, current);
-       }
-}
-#else
-#if defined(CPU_M68020_OR_M68030)
-static inline void bus_error030 (struct frame *fp)
-{
-       volatile unsigned short temp;
-       unsigned short mmusr;
-       unsigned long addr, errorcode;
-       unsigned short ssw = fp->un.fmtb.ssw;
-#ifdef DEBUG
-       unsigned long desc;
-
-       printk ("pid = %x  ", current->pid);
-       printk ("SSW=%#06x  ", ssw);
-
-       if (ssw & (FC | FB))
-               printk ("Instruction fault at %#010lx\n",
-                       ssw & FC ?
-                       fp->ptregs.format == 0xa ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2
-                       :
-                       fp->ptregs.format == 0xa ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr);
-       if (ssw & DF)
-               printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n",
-                       ssw & RW ? "read" : "write",
-                       fp->un.fmtb.daddr,
-                       space_names[ssw & DFC], fp->ptregs.pc);
-#endif
-
-       /* ++andreas: If a data fault and an instruction fault happen
-          at the same time map in both pages.  */
-
-       /* First handle the data fault, if any.  */
-       if (ssw & DF) {
-               addr = fp->un.fmtb.daddr;
-
-#ifdef DEBUG
-               asm volatile ("ptestr %3,%2@,#7,%0\n\t"
-                             "pmove %%psr,%1@"
-                             : "=a&" (desc)
-                             : "a" (&temp), "a" (addr), "d" (ssw));
-#else
-               asm volatile ("ptestr %2,%1@,#7\n\t"
-                             "pmove %%psr,%0@"
-                             : : "a" (&temp), "a" (addr), "d" (ssw));
-#endif
-               mmusr = temp;
-
-#ifdef DEBUG
-               printk("mmusr is %#x for addr %#lx in task %p\n",
-                      mmusr, addr, current);
-               printk("descriptor address is %#lx, contents %#lx\n",
-                      __va(desc), *(unsigned long *)__va(desc));
-#endif
-
-               errorcode = (mmusr & MMU_I) ? 0 : 1;
-               if (!(ssw & RW) || (ssw & RM))
-                       errorcode |= 2;
-
-               if (mmusr & (MMU_I | MMU_WP)) {
-                       if (ssw & 4) {
-                               printk("Data %s fault at %#010lx in %s (pc=%#lx)\n",
-                                      ssw & RW ? "read" : "write",
-                                      fp->un.fmtb.daddr,
-                                      space_names[ssw & DFC], fp->ptregs.pc);
-                               goto buserr;
-                       }
-                       /* Don't try to do anything further if an exception was
-                          handled. */
-                       if (do_page_fault (&fp->ptregs, addr, errorcode) < 0)
-                               return;
-               } else if (!(mmusr & MMU_I)) {
-                       /* probably a 020 cas fault */
-                       if (!(ssw & RM) && send_fault_sig(&fp->ptregs) > 0)
-                               printk("unexpected bus error (%#x,%#x)\n", ssw, mmusr);
-               } else if (mmusr & (MMU_B|MMU_L|MMU_S)) {
-                       printk("invalid %s access at %#lx from pc %#lx\n",
-                              !(ssw & RW) ? "write" : "read", addr,
-                              fp->ptregs.pc);
-                       die_if_kernel("Oops",&fp->ptregs,mmusr);
-                       force_sig(SIGSEGV, current);
-                       return;
-               } else {
-#if 0
-                       static volatile long tlong;
-#endif
-
-                       printk("weird %s access at %#lx from pc %#lx (ssw is %#x)\n",
-                              !(ssw & RW) ? "write" : "read", addr,
-                              fp->ptregs.pc, ssw);
-                       asm volatile ("ptestr #1,%1@,#0\n\t"
-                                     "pmove %%psr,%0@"
-                                     : /* no outputs */
-                                     : "a" (&temp), "a" (addr));
-                       mmusr = temp;
-
-                       printk ("level 0 mmusr is %#x\n", mmusr);
-#if 0
-                       asm volatile ("pmove %%tt0,%0@"
-                                     : /* no outputs */
-                                     : "a" (&tlong));
-                       printk("tt0 is %#lx, ", tlong);
-                       asm volatile ("pmove %%tt1,%0@"
-                                     : /* no outputs */
-                                     : "a" (&tlong));
-                       printk("tt1 is %#lx\n", tlong);
-#endif
-#ifdef DEBUG
-                       printk("Unknown SIGSEGV - 1\n");
-#endif
-                       die_if_kernel("Oops",&fp->ptregs,mmusr);
-                       force_sig(SIGSEGV, current);
-                       return;
-               }
-
-               /* setup an ATC entry for the access about to be retried */
-               if (!(ssw & RW) || (ssw & RM))
-                       asm volatile ("ploadw %1,%0@" : /* no outputs */
-                                     : "a" (addr), "d" (ssw));
-               else
-                       asm volatile ("ploadr %1,%0@" : /* no outputs */
-                                     : "a" (addr), "d" (ssw));
-       }
-
-       /* Now handle the instruction fault. */
-
-       if (!(ssw & (FC|FB)))
-               return;
-
-       if (fp->ptregs.sr & PS_S) {
-               printk("Instruction fault at %#010lx\n",
-                       fp->ptregs.pc);
-       buserr:
-               printk ("BAD KERNEL BUSERR\n");
-               die_if_kernel("Oops",&fp->ptregs,0);
-               force_sig(SIGKILL, current);
-               return;
-       }
-
-       /* get the fault address */
-       if (fp->ptregs.format == 10)
-               addr = fp->ptregs.pc + 4;
-       else
-               addr = fp->un.fmtb.baddr;
-       if (ssw & FC)
-               addr -= 2;
-
-       if ((ssw & DF) && ((addr ^ fp->un.fmtb.daddr) & PAGE_MASK) == 0)
-               /* Insn fault on same page as data fault.  But we
-                  should still create the ATC entry.  */
-               goto create_atc_entry;
-
-#ifdef DEBUG
-       asm volatile ("ptestr #1,%2@,#7,%0\n\t"
-                     "pmove %%psr,%1@"
-                     : "=a&" (desc)
-                     : "a" (&temp), "a" (addr));
-#else
-       asm volatile ("ptestr #1,%1@,#7\n\t"
-                     "pmove %%psr,%0@"
-                     : : "a" (&temp), "a" (addr));
-#endif
-       mmusr = temp;
-
-#ifdef DEBUG
-       printk ("mmusr is %#x for addr %#lx in task %p\n",
-               mmusr, addr, current);
-       printk ("descriptor address is %#lx, contents %#lx\n",
-               __va(desc), *(unsigned long *)__va(desc));
-#endif
-
-       if (mmusr & MMU_I)
-               do_page_fault (&fp->ptregs, addr, 0);
-       else if (mmusr & (MMU_B|MMU_L|MMU_S)) {
-               printk ("invalid insn access at %#lx from pc %#lx\n",
-                       addr, fp->ptregs.pc);
-#ifdef DEBUG
-               printk("Unknown SIGSEGV - 2\n");
-#endif
-               die_if_kernel("Oops",&fp->ptregs,mmusr);
-               force_sig(SIGSEGV, current);
-               return;
-       }
-
-create_atc_entry:
-       /* setup an ATC entry for the access about to be retried */
-       asm volatile ("ploadr #2,%0@" : /* no outputs */
-                     : "a" (addr));
-}
-#endif /* CPU_M68020_OR_M68030 */
-#endif /* !CONFIG_SUN3 */
-
-asmlinkage void buserr_c(struct frame *fp)
-{
-       /* Only set esp0 if coming from user mode */
-       if (user_mode(&fp->ptregs))
-               current->thread.esp0 = (unsigned long) fp;
-
-#ifdef DEBUG
-       printk ("*** Bus Error *** Format is %x\n", fp->ptregs.format);
-#endif
-
-       switch (fp->ptregs.format) {
-#if defined (CONFIG_M68060)
-       case 4:                         /* 68060 access error */
-         access_error060 (fp);
-         break;
-#endif
-#if defined (CONFIG_M68040)
-       case 0x7:                       /* 68040 access error */
-         access_error040 (fp);
-         break;
-#endif
-#if defined (CPU_M68020_OR_M68030)
-       case 0xa:
-       case 0xb:
-         bus_error030 (fp);
-         break;
-#endif
-       default:
-         die_if_kernel("bad frame format",&fp->ptregs,0);
-#ifdef DEBUG
-         printk("Unknown SIGSEGV - 4\n");
-#endif
-         force_sig(SIGSEGV, current);
-       }
-}
-
-
-static int kstack_depth_to_print = 48;
-
-void show_trace(unsigned long *stack)
-{
-       unsigned long *endstack;
-       unsigned long addr;
-       int i;
-
-       printk("Call Trace:");
-       addr = (unsigned long)stack + THREAD_SIZE - 1;
-       endstack = (unsigned long *)(addr & -THREAD_SIZE);
-       i = 0;
-       while (stack + 1 <= endstack) {
-               addr = *stack++;
-               /*
-                * If the address is either in the text segment of the
-                * kernel, or in the region which contains vmalloc'ed
-                * memory, it *may* be the address of a calling
-                * routine; if so, print it so that someone tracing
-                * down the cause of the crash will be able to figure
-                * out the call path that was taken.
-                */
-               if (__kernel_text_address(addr)) {
-#ifndef CONFIG_KALLSYMS
-                       if (i % 5 == 0)
-                               printk("\n       ");
-#endif
-                       printk(" [<%08lx>] %pS\n", addr, (void *)addr);
-                       i++;
-               }
-       }
-       printk("\n");
-}
-
-void show_registers(struct pt_regs *regs)
-{
-       struct frame *fp = (struct frame *)regs;
-       mm_segment_t old_fs = get_fs();
-       u16 c, *cp;
-       unsigned long addr;
-       int i;
-
-       print_modules();
-       printk("PC: [<%08lx>] %pS\n", regs->pc, (void *)regs->pc);
-       printk("SR: %04x  SP: %p  a2: %08lx\n", regs->sr, regs, regs->a2);
-       printk("d0: %08lx    d1: %08lx    d2: %08lx    d3: %08lx\n",
-              regs->d0, regs->d1, regs->d2, regs->d3);
-       printk("d4: %08lx    d5: %08lx    a0: %08lx    a1: %08lx\n",
-              regs->d4, regs->d5, regs->a0, regs->a1);
-
-       printk("Process %s (pid: %d, task=%p)\n",
-               current->comm, task_pid_nr(current), current);
-       addr = (unsigned long)&fp->un;
-       printk("Frame format=%X ", regs->format);
-       switch (regs->format) {
-       case 0x2:
-               printk("instr addr=%08lx\n", fp->un.fmt2.iaddr);
-               addr += sizeof(fp->un.fmt2);
-               break;
-       case 0x3:
-               printk("eff addr=%08lx\n", fp->un.fmt3.effaddr);
-               addr += sizeof(fp->un.fmt3);
-               break;
-       case 0x4:
-               printk((CPU_IS_060 ? "fault addr=%08lx fslw=%08lx\n"
-                       : "eff addr=%08lx pc=%08lx\n"),
-                       fp->un.fmt4.effaddr, fp->un.fmt4.pc);
-               addr += sizeof(fp->un.fmt4);
-               break;
-       case 0x7:
-               printk("eff addr=%08lx ssw=%04x faddr=%08lx\n",
-                       fp->un.fmt7.effaddr, fp->un.fmt7.ssw, fp->un.fmt7.faddr);
-               printk("wb 1 stat/addr/data: %04x %08lx %08lx\n",
-                       fp->un.fmt7.wb1s, fp->un.fmt7.wb1a, fp->un.fmt7.wb1dpd0);
-               printk("wb 2 stat/addr/data: %04x %08lx %08lx\n",
-                       fp->un.fmt7.wb2s, fp->un.fmt7.wb2a, fp->un.fmt7.wb2d);
-               printk("wb 3 stat/addr/data: %04x %08lx %08lx\n",
-                       fp->un.fmt7.wb3s, fp->un.fmt7.wb3a, fp->un.fmt7.wb3d);
-               printk("push data: %08lx %08lx %08lx %08lx\n",
-                       fp->un.fmt7.wb1dpd0, fp->un.fmt7.pd1, fp->un.fmt7.pd2,
-                       fp->un.fmt7.pd3);
-               addr += sizeof(fp->un.fmt7);
-               break;
-       case 0x9:
-               printk("instr addr=%08lx\n", fp->un.fmt9.iaddr);
-               addr += sizeof(fp->un.fmt9);
-               break;
-       case 0xa:
-               printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n",
-                       fp->un.fmta.ssw, fp->un.fmta.isc, fp->un.fmta.isb,
-                       fp->un.fmta.daddr, fp->un.fmta.dobuf);
-               addr += sizeof(fp->un.fmta);
-               break;
-       case 0xb:
-               printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n",
-                       fp->un.fmtb.ssw, fp->un.fmtb.isc, fp->un.fmtb.isb,
-                       fp->un.fmtb.daddr, fp->un.fmtb.dobuf);
-               printk("baddr=%08lx dibuf=%08lx ver=%x\n",
-                       fp->un.fmtb.baddr, fp->un.fmtb.dibuf, fp->un.fmtb.ver);
-               addr += sizeof(fp->un.fmtb);
-               break;
-       default:
-               printk("\n");
-       }
-       show_stack(NULL, (unsigned long *)addr);
-
-       printk("Code:");
-       set_fs(KERNEL_DS);
-       cp = (u16 *)regs->pc;
-       for (i = -8; i < 16; i++) {
-               if (get_user(c, cp + i) && i >= 0) {
-                       printk(" Bad PC value.");
-                       break;
-               }
-               printk(i ? " %04x" : " <%04x>", c);
-       }
-       set_fs(old_fs);
-       printk ("\n");
-}
-
-void show_stack(struct task_struct *task, unsigned long *stack)
-{
-       unsigned long *p;
-       unsigned long *endstack;
-       int i;
-
-       if (!stack) {
-               if (task)
-                       stack = (unsigned long *)task->thread.esp0;
-               else
-                       stack = (unsigned long *)&stack;
-       }
-       endstack = (unsigned long *)(((unsigned long)stack + THREAD_SIZE - 1) & -THREAD_SIZE);
-
-       printk("Stack from %08lx:", (unsigned long)stack);
-       p = stack;
-       for (i = 0; i < kstack_depth_to_print; i++) {
-               if (p + 1 > endstack)
-                       break;
-               if (i % 8 == 0)
-                       printk("\n       ");
-               printk(" %08lx", *p++);
-       }
-       printk("\n");
-       show_trace(stack);
-}
-
-/*
- * The architecture-independent backtrace generator
- */
-void dump_stack(void)
-{
-       unsigned long stack;
-
-       show_trace(&stack);
-}
-
-EXPORT_SYMBOL(dump_stack);
-
-void bad_super_trap (struct frame *fp)
-{
-       console_verbose();
-       if (fp->ptregs.vector < 4 * ARRAY_SIZE(vec_names))
-               printk ("*** %s ***   FORMAT=%X\n",
-                       vec_names[(fp->ptregs.vector) >> 2],
-                       fp->ptregs.format);
-       else
-               printk ("*** Exception %d ***   FORMAT=%X\n",
-                       (fp->ptregs.vector) >> 2,
-                       fp->ptregs.format);
-       if (fp->ptregs.vector >> 2 == VEC_ADDRERR && CPU_IS_020_OR_030) {
-               unsigned short ssw = fp->un.fmtb.ssw;
-
-               printk ("SSW=%#06x  ", ssw);
-
-               if (ssw & RC)
-                       printk ("Pipe stage C instruction fault at %#010lx\n",
-                               (fp->ptregs.format) == 0xA ?
-                               fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2);
-               if (ssw & RB)
-                       printk ("Pipe stage B instruction fault at %#010lx\n",
-                               (fp->ptregs.format) == 0xA ?
-                               fp->ptregs.pc + 4 : fp->un.fmtb.baddr);
-               if (ssw & DF)
-                       printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n",
-                               ssw & RW ? "read" : "write",
-                               fp->un.fmtb.daddr, space_names[ssw & DFC],
-                               fp->ptregs.pc);
-       }
-       printk ("Current process id is %d\n", task_pid_nr(current));
-       die_if_kernel("BAD KERNEL TRAP", &fp->ptregs, 0);
-}
-
-asmlinkage void trap_c(struct frame *fp)
-{
-       int sig;
-       siginfo_t info;
-
-       if (fp->ptregs.sr & PS_S) {
-               if (fp->ptregs.vector == VEC_TRACE << 2) {
-                       /* traced a trapping instruction on a 68020/30,
-                        * real exception will be executed afterwards.
-                        */
-               } else if (!handle_kernel_fault(&fp->ptregs))
-                       bad_super_trap(fp);
-               return;
-       }
-
-       /* send the appropriate signal to the user program */
-       switch ((fp->ptregs.vector) >> 2) {
-           case VEC_ADDRERR:
-               info.si_code = BUS_ADRALN;
-               sig = SIGBUS;
-               break;
-           case VEC_ILLEGAL:
-           case VEC_LINE10:
-           case VEC_LINE11:
-               info.si_code = ILL_ILLOPC;
-               sig = SIGILL;
-               break;
-           case VEC_PRIV:
-               info.si_code = ILL_PRVOPC;
-               sig = SIGILL;
-               break;
-           case VEC_COPROC:
-               info.si_code = ILL_COPROC;
-               sig = SIGILL;
-               break;
-           case VEC_TRAP1:
-           case VEC_TRAP2:
-           case VEC_TRAP3:
-           case VEC_TRAP4:
-           case VEC_TRAP5:
-           case VEC_TRAP6:
-           case VEC_TRAP7:
-           case VEC_TRAP8:
-           case VEC_TRAP9:
-           case VEC_TRAP10:
-           case VEC_TRAP11:
-           case VEC_TRAP12:
-           case VEC_TRAP13:
-           case VEC_TRAP14:
-               info.si_code = ILL_ILLTRP;
-               sig = SIGILL;
-               break;
-           case VEC_FPBRUC:
-           case VEC_FPOE:
-           case VEC_FPNAN:
-               info.si_code = FPE_FLTINV;
-               sig = SIGFPE;
-               break;
-           case VEC_FPIR:
-               info.si_code = FPE_FLTRES;
-               sig = SIGFPE;
-               break;
-           case VEC_FPDIVZ:
-               info.si_code = FPE_FLTDIV;
-               sig = SIGFPE;
-               break;
-           case VEC_FPUNDER:
-               info.si_code = FPE_FLTUND;
-               sig = SIGFPE;
-               break;
-           case VEC_FPOVER:
-               info.si_code = FPE_FLTOVF;
-               sig = SIGFPE;
-               break;
-           case VEC_ZERODIV:
-               info.si_code = FPE_INTDIV;
-               sig = SIGFPE;
-               break;
-           case VEC_CHK:
-           case VEC_TRAP:
-               info.si_code = FPE_INTOVF;
-               sig = SIGFPE;
-               break;
-           case VEC_TRACE:             /* ptrace single step */
-               info.si_code = TRAP_TRACE;
-               sig = SIGTRAP;
-               break;
-           case VEC_TRAP15:            /* breakpoint */
-               info.si_code = TRAP_BRKPT;
-               sig = SIGTRAP;
-               break;
-           default:
-               info.si_code = ILL_ILLOPC;
-               sig = SIGILL;
-               break;
-       }
-       info.si_signo = sig;
-       info.si_errno = 0;
-       switch (fp->ptregs.format) {
-           default:
-               info.si_addr = (void *) fp->ptregs.pc;
-               break;
-           case 2:
-               info.si_addr = (void *) fp->un.fmt2.iaddr;
-               break;
-           case 7:
-               info.si_addr = (void *) fp->un.fmt7.effaddr;
-               break;
-           case 9:
-               info.si_addr = (void *) fp->un.fmt9.iaddr;
-               break;
-           case 10:
-               info.si_addr = (void *) fp->un.fmta.daddr;
-               break;
-           case 11:
-               info.si_addr = (void *) fp->un.fmtb.daddr;
-               break;
-       }
-       force_sig_info (sig, &info, current);
-}
-
-void die_if_kernel (char *str, struct pt_regs *fp, int nr)
-{
-       if (!(fp->sr & PS_S))
-               return;
-
-       console_verbose();
-       printk("%s: %08x\n",str,nr);
-       show_registers(fp);
-       add_taint(TAINT_DIE);
-       do_exit(SIGSEGV);
-}
-
-/*
- * This function is called if an error occur while accessing
- * user-space from the fpsp040 code.
- */
-asmlinkage void fpsp040_die(void)
-{
-       do_exit(SIGSEGV);
-}
-
-#ifdef CONFIG_M68KFPU_EMU
-asmlinkage void fpemu_signal(int signal, int code, void *addr)
-{
-       siginfo_t info;
-
-       info.si_signo = signal;
-       info.si_errno = 0;
-       info.si_code = code;
-       info.si_addr = addr;
-       force_sig_info(signal, &info, current);
-}
+#include "traps_no.c"
 #endif
diff --git a/arch/m68k/kernel/traps_mm.c b/arch/m68k/kernel/traps_mm.c
new file mode 100644 (file)
index 0000000..4022bbc
--- /dev/null
@@ -0,0 +1,1207 @@
+/*
+ *  linux/arch/m68k/kernel/traps.c
+ *
+ *  Copyright (C) 1993, 1994 by Hamish Macdonald
+ *
+ *  68040 fixes by Michael Rausch
+ *  68040 fixes by Martin Apel
+ *  68040 fixes and writeback by Richard Zidlicky
+ *  68060 fixes by Roman Hodek
+ *  68060 fixes by Jesper Skov
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+/*
+ * Sets up all exception vectors
+ */
+
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/user.h>
+#include <linux/string.h>
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <linux/ptrace.h>
+#include <linux/kallsyms.h>
+
+#include <asm/setup.h>
+#include <asm/fpu.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/traps.h>
+#include <asm/pgalloc.h>
+#include <asm/machdep.h>
+#include <asm/siginfo.h>
+
+/* assembler routines */
+asmlinkage void system_call(void);
+asmlinkage void buserr(void);
+asmlinkage void trap(void);
+asmlinkage void nmihandler(void);
+#ifdef CONFIG_M68KFPU_EMU
+asmlinkage void fpu_emu(void);
+#endif
+
+e_vector vectors[256];
+
+/* nmi handler for the Amiga */
+asm(".text\n"
+    __ALIGN_STR "\n"
+    "nmihandler: rte");
+
+/*
+ * this must be called very early as the kernel might
+ * use some instruction that are emulated on the 060
+ * and so we're prepared for early probe attempts (e.g. nf_init).
+ */
+void __init base_trap_init(void)
+{
+       if (MACH_IS_SUN3X) {
+               extern e_vector *sun3x_prom_vbr;
+
+               __asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr));
+       }
+
+       /* setup the exception vector table */
+       __asm__ volatile ("movec %0,%%vbr" : : "r" ((void*)vectors));
+
+       if (CPU_IS_060) {
+               /* set up ISP entry points */
+               asmlinkage void unimp_vec(void) asm ("_060_isp_unimp");
+
+               vectors[VEC_UNIMPII] = unimp_vec;
+       }
+
+       vectors[VEC_BUSERR] = buserr;
+       vectors[VEC_ILLEGAL] = trap;
+       vectors[VEC_SYS] = system_call;
+}
+
+void __init trap_init (void)
+{
+       int i;
+
+       for (i = VEC_SPUR; i <= VEC_INT7; i++)
+               vectors[i] = bad_inthandler;
+
+       for (i = 0; i < VEC_USER; i++)
+               if (!vectors[i])
+                       vectors[i] = trap;
+
+       for (i = VEC_USER; i < 256; i++)
+               vectors[i] = bad_inthandler;
+
+#ifdef CONFIG_M68KFPU_EMU
+       if (FPU_IS_EMU)
+               vectors[VEC_LINE11] = fpu_emu;
+#endif
+
+       if (CPU_IS_040 && !FPU_IS_EMU) {
+               /* set up FPSP entry points */
+               asmlinkage void dz_vec(void) asm ("dz");
+               asmlinkage void inex_vec(void) asm ("inex");
+               asmlinkage void ovfl_vec(void) asm ("ovfl");
+               asmlinkage void unfl_vec(void) asm ("unfl");
+               asmlinkage void snan_vec(void) asm ("snan");
+               asmlinkage void operr_vec(void) asm ("operr");
+               asmlinkage void bsun_vec(void) asm ("bsun");
+               asmlinkage void fline_vec(void) asm ("fline");
+               asmlinkage void unsupp_vec(void) asm ("unsupp");
+
+               vectors[VEC_FPDIVZ] = dz_vec;
+               vectors[VEC_FPIR] = inex_vec;
+               vectors[VEC_FPOVER] = ovfl_vec;
+               vectors[VEC_FPUNDER] = unfl_vec;
+               vectors[VEC_FPNAN] = snan_vec;
+               vectors[VEC_FPOE] = operr_vec;
+               vectors[VEC_FPBRUC] = bsun_vec;
+               vectors[VEC_LINE11] = fline_vec;
+               vectors[VEC_FPUNSUP] = unsupp_vec;
+       }
+
+       if (CPU_IS_060 && !FPU_IS_EMU) {
+               /* set up IFPSP entry points */
+               asmlinkage void snan_vec6(void) asm ("_060_fpsp_snan");
+               asmlinkage void operr_vec6(void) asm ("_060_fpsp_operr");
+               asmlinkage void ovfl_vec6(void) asm ("_060_fpsp_ovfl");
+               asmlinkage void unfl_vec6(void) asm ("_060_fpsp_unfl");
+               asmlinkage void dz_vec6(void) asm ("_060_fpsp_dz");
+               asmlinkage void inex_vec6(void) asm ("_060_fpsp_inex");
+               asmlinkage void fline_vec6(void) asm ("_060_fpsp_fline");
+               asmlinkage void unsupp_vec6(void) asm ("_060_fpsp_unsupp");
+               asmlinkage void effadd_vec6(void) asm ("_060_fpsp_effadd");
+
+               vectors[VEC_FPNAN] = snan_vec6;
+               vectors[VEC_FPOE] = operr_vec6;
+               vectors[VEC_FPOVER] = ovfl_vec6;
+               vectors[VEC_FPUNDER] = unfl_vec6;
+               vectors[VEC_FPDIVZ] = dz_vec6;
+               vectors[VEC_FPIR] = inex_vec6;
+               vectors[VEC_LINE11] = fline_vec6;
+               vectors[VEC_FPUNSUP] = unsupp_vec6;
+               vectors[VEC_UNIMPEA] = effadd_vec6;
+       }
+
+        /* if running on an amiga, make the NMI interrupt do nothing */
+       if (MACH_IS_AMIGA) {
+               vectors[VEC_INT7] = nmihandler;
+       }
+}
+
+
+static const char *vec_names[] = {
+       [VEC_RESETSP]   = "RESET SP",
+       [VEC_RESETPC]   = "RESET PC",
+       [VEC_BUSERR]    = "BUS ERROR",
+       [VEC_ADDRERR]   = "ADDRESS ERROR",
+       [VEC_ILLEGAL]   = "ILLEGAL INSTRUCTION",
+       [VEC_ZERODIV]   = "ZERO DIVIDE",
+       [VEC_CHK]       = "CHK",
+       [VEC_TRAP]      = "TRAPcc",
+       [VEC_PRIV]      = "PRIVILEGE VIOLATION",
+       [VEC_TRACE]     = "TRACE",
+       [VEC_LINE10]    = "LINE 1010",
+       [VEC_LINE11]    = "LINE 1111",
+       [VEC_RESV12]    = "UNASSIGNED RESERVED 12",
+       [VEC_COPROC]    = "COPROCESSOR PROTOCOL VIOLATION",
+       [VEC_FORMAT]    = "FORMAT ERROR",
+       [VEC_UNINT]     = "UNINITIALIZED INTERRUPT",
+       [VEC_RESV16]    = "UNASSIGNED RESERVED 16",
+       [VEC_RESV17]    = "UNASSIGNED RESERVED 17",
+       [VEC_RESV18]    = "UNASSIGNED RESERVED 18",
+       [VEC_RESV19]    = "UNASSIGNED RESERVED 19",
+       [VEC_RESV20]    = "UNASSIGNED RESERVED 20",
+       [VEC_RESV21]    = "UNASSIGNED RESERVED 21",
+       [VEC_RESV22]    = "UNASSIGNED RESERVED 22",
+       [VEC_RESV23]    = "UNASSIGNED RESERVED 23",
+       [VEC_SPUR]      = "SPURIOUS INTERRUPT",
+       [VEC_INT1]      = "LEVEL 1 INT",
+       [VEC_INT2]      = "LEVEL 2 INT",
+       [VEC_INT3]      = "LEVEL 3 INT",
+       [VEC_INT4]      = "LEVEL 4 INT",
+       [VEC_INT5]      = "LEVEL 5 INT",
+       [VEC_INT6]      = "LEVEL 6 INT",
+       [VEC_INT7]      = "LEVEL 7 INT",
+       [VEC_SYS]       = "SYSCALL",
+       [VEC_TRAP1]     = "TRAP #1",
+       [VEC_TRAP2]     = "TRAP #2",
+       [VEC_TRAP3]     = "TRAP #3",
+       [VEC_TRAP4]     = "TRAP #4",
+       [VEC_TRAP5]     = "TRAP #5",
+       [VEC_TRAP6]     = "TRAP #6",
+       [VEC_TRAP7]     = "TRAP #7",
+       [VEC_TRAP8]     = "TRAP #8",
+       [VEC_TRAP9]     = "TRAP #9",
+       [VEC_TRAP10]    = "TRAP #10",
+       [VEC_TRAP11]    = "TRAP #11",
+       [VEC_TRAP12]    = "TRAP #12",
+       [VEC_TRAP13]    = "TRAP #13",
+       [VEC_TRAP14]    = "TRAP #14",
+       [VEC_TRAP15]    = "TRAP #15",
+       [VEC_FPBRUC]    = "FPCP BSUN",
+       [VEC_FPIR]      = "FPCP INEXACT",
+       [VEC_FPDIVZ]    = "FPCP DIV BY 0",
+       [VEC_FPUNDER]   = "FPCP UNDERFLOW",
+       [VEC_FPOE]      = "FPCP OPERAND ERROR",
+       [VEC_FPOVER]    = "FPCP OVERFLOW",
+       [VEC_FPNAN]     = "FPCP SNAN",
+       [VEC_FPUNSUP]   = "FPCP UNSUPPORTED OPERATION",
+       [VEC_MMUCFG]    = "MMU CONFIGURATION ERROR",
+       [VEC_MMUILL]    = "MMU ILLEGAL OPERATION ERROR",
+       [VEC_MMUACC]    = "MMU ACCESS LEVEL VIOLATION ERROR",
+       [VEC_RESV59]    = "UNASSIGNED RESERVED 59",
+       [VEC_UNIMPEA]   = "UNASSIGNED RESERVED 60",
+       [VEC_UNIMPII]   = "UNASSIGNED RESERVED 61",
+       [VEC_RESV62]    = "UNASSIGNED RESERVED 62",
+       [VEC_RESV63]    = "UNASSIGNED RESERVED 63",
+};
+
+static const char *space_names[] = {
+       [0]             = "Space 0",
+       [USER_DATA]     = "User Data",
+       [USER_PROGRAM]  = "User Program",
+#ifndef CONFIG_SUN3
+       [3]             = "Space 3",
+#else
+       [FC_CONTROL]    = "Control",
+#endif
+       [4]             = "Space 4",
+       [SUPER_DATA]    = "Super Data",
+       [SUPER_PROGRAM] = "Super Program",
+       [CPU_SPACE]     = "CPU"
+};
+
+void die_if_kernel(char *,struct pt_regs *,int);
+asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address,
+                             unsigned long error_code);
+int send_fault_sig(struct pt_regs *regs);
+
+asmlinkage void trap_c(struct frame *fp);
+
+#if defined (CONFIG_M68060)
+static inline void access_error060 (struct frame *fp)
+{
+       unsigned long fslw = fp->un.fmt4.pc; /* is really FSLW for access error */
+
+#ifdef DEBUG
+       printk("fslw=%#lx, fa=%#lx\n", fslw, fp->un.fmt4.effaddr);
+#endif
+
+       if (fslw & MMU060_BPE) {
+               /* branch prediction error -> clear branch cache */
+               __asm__ __volatile__ ("movec %/cacr,%/d0\n\t"
+                                     "orl   #0x00400000,%/d0\n\t"
+                                     "movec %/d0,%/cacr"
+                                     : : : "d0" );
+               /* return if there's no other error */
+               if (!(fslw & MMU060_ERR_BITS) && !(fslw & MMU060_SEE))
+                       return;
+       }
+
+       if (fslw & (MMU060_DESC_ERR | MMU060_WP | MMU060_SP)) {
+               unsigned long errorcode;
+               unsigned long addr = fp->un.fmt4.effaddr;
+
+               if (fslw & MMU060_MA)
+                       addr = (addr + PAGE_SIZE - 1) & PAGE_MASK;
+
+               errorcode = 1;
+               if (fslw & MMU060_DESC_ERR) {
+                       __flush_tlb040_one(addr);
+                       errorcode = 0;
+               }
+               if (fslw & MMU060_W)
+                       errorcode |= 2;
+#ifdef DEBUG
+               printk("errorcode = %d\n", errorcode );
+#endif
+               do_page_fault(&fp->ptregs, addr, errorcode);
+       } else if (fslw & (MMU060_SEE)){
+               /* Software Emulation Error.
+                * fault during mem_read/mem_write in ifpsp060/os.S
+                */
+               send_fault_sig(&fp->ptregs);
+       } else if (!(fslw & (MMU060_RE|MMU060_WE)) ||
+                  send_fault_sig(&fp->ptregs) > 0) {
+               printk("pc=%#lx, fa=%#lx\n", fp->ptregs.pc, fp->un.fmt4.effaddr);
+               printk( "68060 access error, fslw=%lx\n", fslw );
+               trap_c( fp );
+       }
+}
+#endif /* CONFIG_M68060 */
+
+#if defined (CONFIG_M68040)
+static inline unsigned long probe040(int iswrite, unsigned long addr, int wbs)
+{
+       unsigned long mmusr;
+       mm_segment_t old_fs = get_fs();
+
+       set_fs(MAKE_MM_SEG(wbs));
+
+       if (iswrite)
+               asm volatile (".chip 68040; ptestw (%0); .chip 68k" : : "a" (addr));
+       else
+               asm volatile (".chip 68040; ptestr (%0); .chip 68k" : : "a" (addr));
+
+       asm volatile (".chip 68040; movec %%mmusr,%0; .chip 68k" : "=r" (mmusr));
+
+       set_fs(old_fs);
+
+       return mmusr;
+}
+
+static inline int do_040writeback1(unsigned short wbs, unsigned long wba,
+                                  unsigned long wbd)
+{
+       int res = 0;
+       mm_segment_t old_fs = get_fs();
+
+       /* set_fs can not be moved, otherwise put_user() may oops */
+       set_fs(MAKE_MM_SEG(wbs));
+
+       switch (wbs & WBSIZ_040) {
+       case BA_SIZE_BYTE:
+               res = put_user(wbd & 0xff, (char __user *)wba);
+               break;
+       case BA_SIZE_WORD:
+               res = put_user(wbd & 0xffff, (short __user *)wba);
+               break;
+       case BA_SIZE_LONG:
+               res = put_user(wbd, (int __user *)wba);
+               break;
+       }
+
+       /* set_fs can not be moved, otherwise put_user() may oops */
+       set_fs(old_fs);
+
+
+#ifdef DEBUG
+       printk("do_040writeback1, res=%d\n",res);
+#endif
+
+       return res;
+}
+
+/* after an exception in a writeback the stack frame corresponding
+ * to that exception is discarded, set a few bits in the old frame
+ * to simulate what it should look like
+ */
+static inline void fix_xframe040(struct frame *fp, unsigned long wba, unsigned short wbs)
+{
+       fp->un.fmt7.faddr = wba;
+       fp->un.fmt7.ssw = wbs & 0xff;
+       if (wba != current->thread.faddr)
+           fp->un.fmt7.ssw |= MA_040;
+}
+
+static inline void do_040writebacks(struct frame *fp)
+{
+       int res = 0;
+#if 0
+       if (fp->un.fmt7.wb1s & WBV_040)
+               printk("access_error040: cannot handle 1st writeback. oops.\n");
+#endif
+
+       if ((fp->un.fmt7.wb2s & WBV_040) &&
+           !(fp->un.fmt7.wb2s & WBTT_040)) {
+               res = do_040writeback1(fp->un.fmt7.wb2s, fp->un.fmt7.wb2a,
+                                      fp->un.fmt7.wb2d);
+               if (res)
+                       fix_xframe040(fp, fp->un.fmt7.wb2a, fp->un.fmt7.wb2s);
+               else
+                       fp->un.fmt7.wb2s = 0;
+       }
+
+       /* do the 2nd wb only if the first one was successful (except for a kernel wb) */
+       if (fp->un.fmt7.wb3s & WBV_040 && (!res || fp->un.fmt7.wb3s & 4)) {
+               res = do_040writeback1(fp->un.fmt7.wb3s, fp->un.fmt7.wb3a,
+                                      fp->un.fmt7.wb3d);
+               if (res)
+                   {
+                       fix_xframe040(fp, fp->un.fmt7.wb3a, fp->un.fmt7.wb3s);
+
+                       fp->un.fmt7.wb2s = fp->un.fmt7.wb3s;
+                       fp->un.fmt7.wb3s &= (~WBV_040);
+                       fp->un.fmt7.wb2a = fp->un.fmt7.wb3a;
+                       fp->un.fmt7.wb2d = fp->un.fmt7.wb3d;
+                   }
+               else
+                       fp->un.fmt7.wb3s = 0;
+       }
+
+       if (res)
+               send_fault_sig(&fp->ptregs);
+}
+
+/*
+ * called from sigreturn(), must ensure userspace code didn't
+ * manipulate exception frame to circumvent protection, then complete
+ * pending writebacks
+ * we just clear TM2 to turn it into a userspace access
+ */
+asmlinkage void berr_040cleanup(struct frame *fp)
+{
+       fp->un.fmt7.wb2s &= ~4;
+       fp->un.fmt7.wb3s &= ~4;
+
+       do_040writebacks(fp);
+}
+
+static inline void access_error040(struct frame *fp)
+{
+       unsigned short ssw = fp->un.fmt7.ssw;
+       unsigned long mmusr;
+
+#ifdef DEBUG
+       printk("ssw=%#x, fa=%#lx\n", ssw, fp->un.fmt7.faddr);
+        printk("wb1s=%#x, wb2s=%#x, wb3s=%#x\n", fp->un.fmt7.wb1s,
+               fp->un.fmt7.wb2s, fp->un.fmt7.wb3s);
+       printk ("wb2a=%lx, wb3a=%lx, wb2d=%lx, wb3d=%lx\n",
+               fp->un.fmt7.wb2a, fp->un.fmt7.wb3a,
+               fp->un.fmt7.wb2d, fp->un.fmt7.wb3d);
+#endif
+
+       if (ssw & ATC_040) {
+               unsigned long addr = fp->un.fmt7.faddr;
+               unsigned long errorcode;
+
+               /*
+                * The MMU status has to be determined AFTER the address
+                * has been corrected if there was a misaligned access (MA).
+                */
+               if (ssw & MA_040)
+                       addr = (addr + 7) & -8;
+
+               /* MMU error, get the MMUSR info for this access */
+               mmusr = probe040(!(ssw & RW_040), addr, ssw);
+#ifdef DEBUG
+               printk("mmusr = %lx\n", mmusr);
+#endif
+               errorcode = 1;
+               if (!(mmusr & MMU_R_040)) {
+                       /* clear the invalid atc entry */
+                       __flush_tlb040_one(addr);
+                       errorcode = 0;
+               }
+
+               /* despite what documentation seems to say, RMW
+                * accesses have always both the LK and RW bits set */
+               if (!(ssw & RW_040) || (ssw & LK_040))
+                       errorcode |= 2;
+
+               if (do_page_fault(&fp->ptregs, addr, errorcode)) {
+#ifdef DEBUG
+                       printk("do_page_fault() !=0\n");
+#endif
+                       if (user_mode(&fp->ptregs)){
+                               /* delay writebacks after signal delivery */
+#ifdef DEBUG
+                               printk(".. was usermode - return\n");
+#endif
+                               return;
+                       }
+                       /* disable writeback into user space from kernel
+                        * (if do_page_fault didn't fix the mapping,
+                         * the writeback won't do good)
+                        */
+disable_wb:
+#ifdef DEBUG
+                       printk(".. disabling wb2\n");
+#endif
+                       if (fp->un.fmt7.wb2a == fp->un.fmt7.faddr)
+                               fp->un.fmt7.wb2s &= ~WBV_040;
+                       if (fp->un.fmt7.wb3a == fp->un.fmt7.faddr)
+                               fp->un.fmt7.wb3s &= ~WBV_040;
+               }
+       } else {
+               /* In case of a bus error we either kill the process or expect
+                * the kernel to catch the fault, which then is also responsible
+                * for cleaning up the mess.
+                */
+               current->thread.signo = SIGBUS;
+               current->thread.faddr = fp->un.fmt7.faddr;
+               if (send_fault_sig(&fp->ptregs) >= 0)
+                       printk("68040 bus error (ssw=%x, faddr=%lx)\n", ssw,
+                              fp->un.fmt7.faddr);
+               goto disable_wb;
+       }
+
+       do_040writebacks(fp);
+}
+#endif /* CONFIG_M68040 */
+
+#if defined(CONFIG_SUN3)
+#include <asm/sun3mmu.h>
+
+extern int mmu_emu_handle_fault (unsigned long, int, int);
+
+/* sun3 version of bus_error030 */
+
+static inline void bus_error030 (struct frame *fp)
+{
+       unsigned char buserr_type = sun3_get_buserr ();
+       unsigned long addr, errorcode;
+       unsigned short ssw = fp->un.fmtb.ssw;
+       extern unsigned long _sun3_map_test_start, _sun3_map_test_end;
+
+#ifdef DEBUG
+       if (ssw & (FC | FB))
+               printk ("Instruction fault at %#010lx\n",
+                       ssw & FC ?
+                       fp->ptregs.format == 0xa ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2
+                       :
+                       fp->ptregs.format == 0xa ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr);
+       if (ssw & DF)
+               printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n",
+                       ssw & RW ? "read" : "write",
+                       fp->un.fmtb.daddr,
+                       space_names[ssw & DFC], fp->ptregs.pc);
+#endif
+
+       /*
+        * Check if this page should be demand-mapped. This needs to go before
+        * the testing for a bad kernel-space access (demand-mapping applies
+        * to kernel accesses too).
+        */
+
+       if ((ssw & DF)
+           && (buserr_type & (SUN3_BUSERR_PROTERR | SUN3_BUSERR_INVALID))) {
+               if (mmu_emu_handle_fault (fp->un.fmtb.daddr, ssw & RW, 0))
+                       return;
+       }
+
+       /* Check for kernel-space pagefault (BAD). */
+       if (fp->ptregs.sr & PS_S) {
+               /* kernel fault must be a data fault to user space */
+               if (! ((ssw & DF) && ((ssw & DFC) == USER_DATA))) {
+                    // try checking the kernel mappings before surrender
+                    if (mmu_emu_handle_fault (fp->un.fmtb.daddr, ssw & RW, 1))
+                         return;
+                       /* instruction fault or kernel data fault! */
+                       if (ssw & (FC | FB))
+                               printk ("Instruction fault at %#010lx\n",
+                                       fp->ptregs.pc);
+                       if (ssw & DF) {
+                               /* was this fault incurred testing bus mappings? */
+                               if((fp->ptregs.pc >= (unsigned long)&_sun3_map_test_start) &&
+                                  (fp->ptregs.pc <= (unsigned long)&_sun3_map_test_end)) {
+                                       send_fault_sig(&fp->ptregs);
+                                       return;
+                               }
+
+                               printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n",
+                                       ssw & RW ? "read" : "write",
+                                       fp->un.fmtb.daddr,
+                                       space_names[ssw & DFC], fp->ptregs.pc);
+                       }
+                       printk ("BAD KERNEL BUSERR\n");
+
+                       die_if_kernel("Oops", &fp->ptregs,0);
+                       force_sig(SIGKILL, current);
+                       return;
+               }
+       } else {
+               /* user fault */
+               if (!(ssw & (FC | FB)) && !(ssw & DF))
+                       /* not an instruction fault or data fault! BAD */
+                       panic ("USER BUSERR w/o instruction or data fault");
+       }
+
+
+       /* First handle the data fault, if any.  */
+       if (ssw & DF) {
+               addr = fp->un.fmtb.daddr;
+
+// errorcode bit 0:    0 -> no page            1 -> protection fault
+// errorcode bit 1:    0 -> read fault         1 -> write fault
+
+// (buserr_type & SUN3_BUSERR_PROTERR) -> protection fault
+// (buserr_type & SUN3_BUSERR_INVALID) -> invalid page fault
+
+               if (buserr_type & SUN3_BUSERR_PROTERR)
+                       errorcode = 0x01;
+               else if (buserr_type & SUN3_BUSERR_INVALID)
+                       errorcode = 0x00;
+               else {
+#ifdef DEBUG
+                       printk ("*** unexpected busfault type=%#04x\n", buserr_type);
+                       printk ("invalid %s access at %#lx from pc %#lx\n",
+                               !(ssw & RW) ? "write" : "read", addr,
+                               fp->ptregs.pc);
+#endif
+                       die_if_kernel ("Oops", &fp->ptregs, buserr_type);
+                       force_sig (SIGBUS, current);
+                       return;
+               }
+
+//todo: wtf is RM bit? --m
+               if (!(ssw & RW) || ssw & RM)
+                       errorcode |= 0x02;
+
+               /* Handle page fault. */
+               do_page_fault (&fp->ptregs, addr, errorcode);
+
+               /* Retry the data fault now. */
+               return;
+       }
+
+       /* Now handle the instruction fault. */
+
+       /* Get the fault address. */
+       if (fp->ptregs.format == 0xA)
+               addr = fp->ptregs.pc + 4;
+       else
+               addr = fp->un.fmtb.baddr;
+       if (ssw & FC)
+               addr -= 2;
+
+       if (buserr_type & SUN3_BUSERR_INVALID) {
+               if (!mmu_emu_handle_fault (fp->un.fmtb.daddr, 1, 0))
+                       do_page_fault (&fp->ptregs, addr, 0);
+       } else {
+#ifdef DEBUG
+               printk ("protection fault on insn access (segv).\n");
+#endif
+               force_sig (SIGSEGV, current);
+       }
+}
+#else
+#if defined(CPU_M68020_OR_M68030)
+static inline void bus_error030 (struct frame *fp)
+{
+       volatile unsigned short temp;
+       unsigned short mmusr;
+       unsigned long addr, errorcode;
+       unsigned short ssw = fp->un.fmtb.ssw;
+#ifdef DEBUG
+       unsigned long desc;
+
+       printk ("pid = %x  ", current->pid);
+       printk ("SSW=%#06x  ", ssw);
+
+       if (ssw & (FC | FB))
+               printk ("Instruction fault at %#010lx\n",
+                       ssw & FC ?
+                       fp->ptregs.format == 0xa ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2
+                       :
+                       fp->ptregs.format == 0xa ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr);
+       if (ssw & DF)
+               printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n",
+                       ssw & RW ? "read" : "write",
+                       fp->un.fmtb.daddr,
+                       space_names[ssw & DFC], fp->ptregs.pc);
+#endif
+
+       /* ++andreas: If a data fault and an instruction fault happen
+          at the same time map in both pages.  */
+
+       /* First handle the data fault, if any.  */
+       if (ssw & DF) {
+               addr = fp->un.fmtb.daddr;
+
+#ifdef DEBUG
+               asm volatile ("ptestr %3,%2@,#7,%0\n\t"
+                             "pmove %%psr,%1@"
+                             : "=a&" (desc)
+                             : "a" (&temp), "a" (addr), "d" (ssw));
+#else
+               asm volatile ("ptestr %2,%1@,#7\n\t"
+                             "pmove %%psr,%0@"
+                             : : "a" (&temp), "a" (addr), "d" (ssw));
+#endif
+               mmusr = temp;
+
+#ifdef DEBUG
+               printk("mmusr is %#x for addr %#lx in task %p\n",
+                      mmusr, addr, current);
+               printk("descriptor address is %#lx, contents %#lx\n",
+                      __va(desc), *(unsigned long *)__va(desc));
+#endif
+
+               errorcode = (mmusr & MMU_I) ? 0 : 1;
+               if (!(ssw & RW) || (ssw & RM))
+                       errorcode |= 2;
+
+               if (mmusr & (MMU_I | MMU_WP)) {
+                       if (ssw & 4) {
+                               printk("Data %s fault at %#010lx in %s (pc=%#lx)\n",
+                                      ssw & RW ? "read" : "write",
+                                      fp->un.fmtb.daddr,
+                                      space_names[ssw & DFC], fp->ptregs.pc);
+                               goto buserr;
+                       }
+                       /* Don't try to do anything further if an exception was
+                          handled. */
+                       if (do_page_fault (&fp->ptregs, addr, errorcode) < 0)
+                               return;
+               } else if (!(mmusr & MMU_I)) {
+                       /* probably a 020 cas fault */
+                       if (!(ssw & RM) && send_fault_sig(&fp->ptregs) > 0)
+                               printk("unexpected bus error (%#x,%#x)\n", ssw, mmusr);
+               } else if (mmusr & (MMU_B|MMU_L|MMU_S)) {
+                       printk("invalid %s access at %#lx from pc %#lx\n",
+                              !(ssw & RW) ? "write" : "read", addr,
+                              fp->ptregs.pc);
+                       die_if_kernel("Oops",&fp->ptregs,mmusr);
+                       force_sig(SIGSEGV, current);
+                       return;
+               } else {
+#if 0
+                       static volatile long tlong;
+#endif
+
+                       printk("weird %s access at %#lx from pc %#lx (ssw is %#x)\n",
+                              !(ssw & RW) ? "write" : "read", addr,
+                              fp->ptregs.pc, ssw);
+                       asm volatile ("ptestr #1,%1@,#0\n\t"
+                                     "pmove %%psr,%0@"
+                                     : /* no outputs */
+                                     : "a" (&temp), "a" (addr));
+                       mmusr = temp;
+
+                       printk ("level 0 mmusr is %#x\n", mmusr);
+#if 0
+                       asm volatile ("pmove %%tt0,%0@"
+                                     : /* no outputs */
+                                     : "a" (&tlong));
+                       printk("tt0 is %#lx, ", tlong);
+                       asm volatile ("pmove %%tt1,%0@"
+                                     : /* no outputs */
+                                     : "a" (&tlong));
+                       printk("tt1 is %#lx\n", tlong);
+#endif
+#ifdef DEBUG
+                       printk("Unknown SIGSEGV - 1\n");
+#endif
+                       die_if_kernel("Oops",&fp->ptregs,mmusr);
+                       force_sig(SIGSEGV, current);
+                       return;
+               }
+
+               /* setup an ATC entry for the access about to be retried */
+               if (!(ssw & RW) || (ssw & RM))
+                       asm volatile ("ploadw %1,%0@" : /* no outputs */
+                                     : "a" (addr), "d" (ssw));
+               else
+                       asm volatile ("ploadr %1,%0@" : /* no outputs */
+                                     : "a" (addr), "d" (ssw));
+       }
+
+       /* Now handle the instruction fault. */
+
+       if (!(ssw & (FC|FB)))
+               return;
+
+       if (fp->ptregs.sr & PS_S) {
+               printk("Instruction fault at %#010lx\n",
+                       fp->ptregs.pc);
+       buserr:
+               printk ("BAD KERNEL BUSERR\n");
+               die_if_kernel("Oops",&fp->ptregs,0);
+               force_sig(SIGKILL, current);
+               return;
+       }
+
+       /* get the fault address */
+       if (fp->ptregs.format == 10)
+               addr = fp->ptregs.pc + 4;
+       else
+               addr = fp->un.fmtb.baddr;
+       if (ssw & FC)
+               addr -= 2;
+
+       if ((ssw & DF) && ((addr ^ fp->un.fmtb.daddr) & PAGE_MASK) == 0)
+               /* Insn fault on same page as data fault.  But we
+                  should still create the ATC entry.  */
+               goto create_atc_entry;
+
+#ifdef DEBUG
+       asm volatile ("ptestr #1,%2@,#7,%0\n\t"
+                     "pmove %%psr,%1@"
+                     : "=a&" (desc)
+                     : "a" (&temp), "a" (addr));
+#else
+       asm volatile ("ptestr #1,%1@,#7\n\t"
+                     "pmove %%psr,%0@"
+                     : : "a" (&temp), "a" (addr));
+#endif
+       mmusr = temp;
+
+#ifdef DEBUG
+       printk ("mmusr is %#x for addr %#lx in task %p\n",
+               mmusr, addr, current);
+       printk ("descriptor address is %#lx, contents %#lx\n",
+               __va(desc), *(unsigned long *)__va(desc));
+#endif
+
+       if (mmusr & MMU_I)
+               do_page_fault (&fp->ptregs, addr, 0);
+       else if (mmusr & (MMU_B|MMU_L|MMU_S)) {
+               printk ("invalid insn access at %#lx from pc %#lx\n",
+                       addr, fp->ptregs.pc);
+#ifdef DEBUG
+               printk("Unknown SIGSEGV - 2\n");
+#endif
+               die_if_kernel("Oops",&fp->ptregs,mmusr);
+               force_sig(SIGSEGV, current);
+               return;
+       }
+
+create_atc_entry:
+       /* setup an ATC entry for the access about to be retried */
+       asm volatile ("ploadr #2,%0@" : /* no outputs */
+                     : "a" (addr));
+}
+#endif /* CPU_M68020_OR_M68030 */
+#endif /* !CONFIG_SUN3 */
+
+asmlinkage void buserr_c(struct frame *fp)
+{
+       /* Only set esp0 if coming from user mode */
+       if (user_mode(&fp->ptregs))
+               current->thread.esp0 = (unsigned long) fp;
+
+#ifdef DEBUG
+       printk ("*** Bus Error *** Format is %x\n", fp->ptregs.format);
+#endif
+
+       switch (fp->ptregs.format) {
+#if defined (CONFIG_M68060)
+       case 4:                         /* 68060 access error */
+         access_error060 (fp);
+         break;
+#endif
+#if defined (CONFIG_M68040)
+       case 0x7:                       /* 68040 access error */
+         access_error040 (fp);
+         break;
+#endif
+#if defined (CPU_M68020_OR_M68030)
+       case 0xa:
+       case 0xb:
+         bus_error030 (fp);
+         break;
+#endif
+       default:
+         die_if_kernel("bad frame format",&fp->ptregs,0);
+#ifdef DEBUG
+         printk("Unknown SIGSEGV - 4\n");
+#endif
+         force_sig(SIGSEGV, current);
+       }
+}
+
+
+static int kstack_depth_to_print = 48;
+
+void show_trace(unsigned long *stack)
+{
+       unsigned long *endstack;
+       unsigned long addr;
+       int i;
+
+       printk("Call Trace:");
+       addr = (unsigned long)stack + THREAD_SIZE - 1;
+       endstack = (unsigned long *)(addr & -THREAD_SIZE);
+       i = 0;
+       while (stack + 1 <= endstack) {
+               addr = *stack++;
+               /*
+                * If the address is either in the text segment of the
+                * kernel, or in the region which contains vmalloc'ed
+                * memory, it *may* be the address of a calling
+                * routine; if so, print it so that someone tracing
+                * down the cause of the crash will be able to figure
+                * out the call path that was taken.
+                */
+               if (__kernel_text_address(addr)) {
+#ifndef CONFIG_KALLSYMS
+                       if (i % 5 == 0)
+                               printk("\n       ");
+#endif
+                       printk(" [<%08lx>] %pS\n", addr, (void *)addr);
+                       i++;
+               }
+       }
+       printk("\n");
+}
+
+void show_registers(struct pt_regs *regs)
+{
+       struct frame *fp = (struct frame *)regs;
+       mm_segment_t old_fs = get_fs();
+       u16 c, *cp;
+       unsigned long addr;
+       int i;
+
+       print_modules();
+       printk("PC: [<%08lx>] %pS\n", regs->pc, (void *)regs->pc);
+       printk("SR: %04x  SP: %p  a2: %08lx\n", regs->sr, regs, regs->a2);
+       printk("d0: %08lx    d1: %08lx    d2: %08lx    d3: %08lx\n",
+              regs->d0, regs->d1, regs->d2, regs->d3);
+       printk("d4: %08lx    d5: %08lx    a0: %08lx    a1: %08lx\n",
+              regs->d4, regs->d5, regs->a0, regs->a1);
+
+       printk("Process %s (pid: %d, task=%p)\n",
+               current->comm, task_pid_nr(current), current);
+       addr = (unsigned long)&fp->un;
+       printk("Frame format=%X ", regs->format);
+       switch (regs->format) {
+       case 0x2:
+               printk("instr addr=%08lx\n", fp->un.fmt2.iaddr);
+               addr += sizeof(fp->un.fmt2);
+               break;
+       case 0x3:
+               printk("eff addr=%08lx\n", fp->un.fmt3.effaddr);
+               addr += sizeof(fp->un.fmt3);
+               break;
+       case 0x4:
+               printk((CPU_IS_060 ? "fault addr=%08lx fslw=%08lx\n"
+                       : "eff addr=%08lx pc=%08lx\n"),
+                       fp->un.fmt4.effaddr, fp->un.fmt4.pc);
+               addr += sizeof(fp->un.fmt4);
+               break;
+       case 0x7:
+               printk("eff addr=%08lx ssw=%04x faddr=%08lx\n",
+                       fp->un.fmt7.effaddr, fp->un.fmt7.ssw, fp->un.fmt7.faddr);
+               printk("wb 1 stat/addr/data: %04x %08lx %08lx\n",
+                       fp->un.fmt7.wb1s, fp->un.fmt7.wb1a, fp->un.fmt7.wb1dpd0);
+               printk("wb 2 stat/addr/data: %04x %08lx %08lx\n",
+                       fp->un.fmt7.wb2s, fp->un.fmt7.wb2a, fp->un.fmt7.wb2d);
+               printk("wb 3 stat/addr/data: %04x %08lx %08lx\n",
+                       fp->un.fmt7.wb3s, fp->un.fmt7.wb3a, fp->un.fmt7.wb3d);
+               printk("push data: %08lx %08lx %08lx %08lx\n",
+                       fp->un.fmt7.wb1dpd0, fp->un.fmt7.pd1, fp->un.fmt7.pd2,
+                       fp->un.fmt7.pd3);
+               addr += sizeof(fp->un.fmt7);
+               break;
+       case 0x9:
+               printk("instr addr=%08lx\n", fp->un.fmt9.iaddr);
+               addr += sizeof(fp->un.fmt9);
+               break;
+       case 0xa:
+               printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n",
+                       fp->un.fmta.ssw, fp->un.fmta.isc, fp->un.fmta.isb,
+                       fp->un.fmta.daddr, fp->un.fmta.dobuf);
+               addr += sizeof(fp->un.fmta);
+               break;
+       case 0xb:
+               printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n",
+                       fp->un.fmtb.ssw, fp->un.fmtb.isc, fp->un.fmtb.isb,
+                       fp->un.fmtb.daddr, fp->un.fmtb.dobuf);
+               printk("baddr=%08lx dibuf=%08lx ver=%x\n",
+                       fp->un.fmtb.baddr, fp->un.fmtb.dibuf, fp->un.fmtb.ver);
+               addr += sizeof(fp->un.fmtb);
+               break;
+       default:
+               printk("\n");
+       }
+       show_stack(NULL, (unsigned long *)addr);
+
+       printk("Code:");
+       set_fs(KERNEL_DS);
+       cp = (u16 *)regs->pc;
+       for (i = -8; i < 16; i++) {
+               if (get_user(c, cp + i) && i >= 0) {
+                       printk(" Bad PC value.");
+                       break;
+               }
+               printk(i ? " %04x" : " <%04x>", c);
+       }
+       set_fs(old_fs);
+       printk ("\n");
+}
+
+void show_stack(struct task_struct *task, unsigned long *stack)
+{
+       unsigned long *p;
+       unsigned long *endstack;
+       int i;
+
+       if (!stack) {
+               if (task)
+                       stack = (unsigned long *)task->thread.esp0;
+               else
+                       stack = (unsigned long *)&stack;
+       }
+       endstack = (unsigned long *)(((unsigned long)stack + THREAD_SIZE - 1) & -THREAD_SIZE);
+
+       printk("Stack from %08lx:", (unsigned long)stack);
+       p = stack;
+       for (i = 0; i < kstack_depth_to_print; i++) {
+               if (p + 1 > endstack)
+                       break;
+               if (i % 8 == 0)
+                       printk("\n       ");
+               printk(" %08lx", *p++);
+       }
+       printk("\n");
+       show_trace(stack);
+}
+
+/*
+ * The architecture-independent backtrace generator
+ */
+void dump_stack(void)
+{
+       unsigned long stack;
+
+       show_trace(&stack);
+}
+
+EXPORT_SYMBOL(dump_stack);
+
+void bad_super_trap (struct frame *fp)
+{
+       console_verbose();
+       if (fp->ptregs.vector < 4 * ARRAY_SIZE(vec_names))
+               printk ("*** %s ***   FORMAT=%X\n",
+                       vec_names[(fp->ptregs.vector) >> 2],
+                       fp->ptregs.format);
+       else
+               printk ("*** Exception %d ***   FORMAT=%X\n",
+                       (fp->ptregs.vector) >> 2,
+                       fp->ptregs.format);
+       if (fp->ptregs.vector >> 2 == VEC_ADDRERR && CPU_IS_020_OR_030) {
+               unsigned short ssw = fp->un.fmtb.ssw;
+
+               printk ("SSW=%#06x  ", ssw);
+
+               if (ssw & RC)
+                       printk ("Pipe stage C instruction fault at %#010lx\n",
+                               (fp->ptregs.format) == 0xA ?
+                               fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2);
+               if (ssw & RB)
+                       printk ("Pipe stage B instruction fault at %#010lx\n",
+                               (fp->ptregs.format) == 0xA ?
+                               fp->ptregs.pc + 4 : fp->un.fmtb.baddr);
+               if (ssw & DF)
+                       printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n",
+                               ssw & RW ? "read" : "write",
+                               fp->un.fmtb.daddr, space_names[ssw & DFC],
+                               fp->ptregs.pc);
+       }
+       printk ("Current process id is %d\n", task_pid_nr(current));
+       die_if_kernel("BAD KERNEL TRAP", &fp->ptregs, 0);
+}
+
+asmlinkage void trap_c(struct frame *fp)
+{
+       int sig;
+       siginfo_t info;
+
+       if (fp->ptregs.sr & PS_S) {
+               if (fp->ptregs.vector == VEC_TRACE << 2) {
+                       /* traced a trapping instruction on a 68020/30,
+                        * real exception will be executed afterwards.
+                        */
+               } else if (!handle_kernel_fault(&fp->ptregs))
+                       bad_super_trap(fp);
+               return;
+       }
+
+       /* send the appropriate signal to the user program */
+       switch ((fp->ptregs.vector) >> 2) {
+           case VEC_ADDRERR:
+               info.si_code = BUS_ADRALN;
+               sig = SIGBUS;
+               break;
+           case VEC_ILLEGAL:
+           case VEC_LINE10:
+           case VEC_LINE11:
+               info.si_code = ILL_ILLOPC;
+               sig = SIGILL;
+               break;
+           case VEC_PRIV:
+               info.si_code = ILL_PRVOPC;
+               sig = SIGILL;
+               break;
+           case VEC_COPROC:
+               info.si_code = ILL_COPROC;
+               sig = SIGILL;
+               break;
+           case VEC_TRAP1:
+           case VEC_TRAP2:
+           case VEC_TRAP3:
+           case VEC_TRAP4:
+           case VEC_TRAP5:
+           case VEC_TRAP6:
+           case VEC_TRAP7:
+           case VEC_TRAP8:
+           case VEC_TRAP9:
+           case VEC_TRAP10:
+           case VEC_TRAP11:
+           case VEC_TRAP12:
+           case VEC_TRAP13:
+           case VEC_TRAP14:
+               info.si_code = ILL_ILLTRP;
+               sig = SIGILL;
+               break;
+           case VEC_FPBRUC:
+           case VEC_FPOE:
+           case VEC_FPNAN:
+               info.si_code = FPE_FLTINV;
+               sig = SIGFPE;
+               break;
+           case VEC_FPIR:
+               info.si_code = FPE_FLTRES;
+               sig = SIGFPE;
+               break;
+           case VEC_FPDIVZ:
+               info.si_code = FPE_FLTDIV;
+               sig = SIGFPE;
+               break;
+           case VEC_FPUNDER:
+               info.si_code = FPE_FLTUND;
+               sig = SIGFPE;
+               break;
+           case VEC_FPOVER:
+               info.si_code = FPE_FLTOVF;
+               sig = SIGFPE;
+               break;
+           case VEC_ZERODIV:
+               info.si_code = FPE_INTDIV;
+               sig = SIGFPE;
+               break;
+           case VEC_CHK:
+           case VEC_TRAP:
+               info.si_code = FPE_INTOVF;
+               sig = SIGFPE;
+               break;
+           case VEC_TRACE:             /* ptrace single step */
+               info.si_code = TRAP_TRACE;
+               sig = SIGTRAP;
+               break;
+           case VEC_TRAP15:            /* breakpoint */
+               info.si_code = TRAP_BRKPT;
+               sig = SIGTRAP;
+               break;
+           default:
+               info.si_code = ILL_ILLOPC;
+               sig = SIGILL;
+               break;
+       }
+       info.si_signo = sig;
+       info.si_errno = 0;
+       switch (fp->ptregs.format) {
+           default:
+               info.si_addr = (void *) fp->ptregs.pc;
+               break;
+           case 2:
+               info.si_addr = (void *) fp->un.fmt2.iaddr;
+               break;
+           case 7:
+               info.si_addr = (void *) fp->un.fmt7.effaddr;
+               break;
+           case 9:
+               info.si_addr = (void *) fp->un.fmt9.iaddr;
+               break;
+           case 10:
+               info.si_addr = (void *) fp->un.fmta.daddr;
+               break;
+           case 11:
+               info.si_addr = (void *) fp->un.fmtb.daddr;
+               break;
+       }
+       force_sig_info (sig, &info, current);
+}
+
+void die_if_kernel (char *str, struct pt_regs *fp, int nr)
+{
+       if (!(fp->sr & PS_S))
+               return;
+
+       console_verbose();
+       printk("%s: %08x\n",str,nr);
+       show_registers(fp);
+       add_taint(TAINT_DIE);
+       do_exit(SIGSEGV);
+}
+
+/*
+ * This function is called if an error occur while accessing
+ * user-space from the fpsp040 code.
+ */
+asmlinkage void fpsp040_die(void)
+{
+       do_exit(SIGSEGV);
+}
+
+#ifdef CONFIG_M68KFPU_EMU
+asmlinkage void fpemu_signal(int signal, int code, void *addr)
+{
+       siginfo_t info;
+
+       info.si_signo = signal;
+       info.si_errno = 0;
+       info.si_code = code;
+       info.si_addr = addr;
+       force_sig_info(signal, &info, current);
+}
+#endif
index 99ba315bd0a857a884dd017fc7a3c42027b78879..030dabf0bc538ddca7fd7ba6bdee96432f2bde56 100644 (file)
@@ -1,10 +1,5 @@
-PHDRS
-{
-  text PT_LOAD FILEHDR PHDRS FLAGS (7);
-  data PT_LOAD FLAGS (7);
-}
-#ifdef CONFIG_SUN3
-#include "vmlinux-sun3.lds"
+#ifdef CONFIG_MMU
+#include "vmlinux.lds_mm.S"
 #else
-#include "vmlinux-std.lds"
+#include "vmlinux.lds_no.S"
 #endif
diff --git a/arch/m68k/kernel/vmlinux.lds_mm.S b/arch/m68k/kernel/vmlinux.lds_mm.S
new file mode 100644 (file)
index 0000000..99ba315
--- /dev/null
@@ -0,0 +1,10 @@
+PHDRS
+{
+  text PT_LOAD FILEHDR PHDRS FLAGS (7);
+  data PT_LOAD FLAGS (7);
+}
+#ifdef CONFIG_SUN3
+#include "vmlinux-sun3.lds"
+#else
+#include "vmlinux-std.lds"
+#endif
index af9abf8d9d98921458ed7ee5ef71c2ad1712befa..1f95881d843732f1abed9b0186687d793e59ecdc 100644 (file)
@@ -1,6 +1,5 @@
-#
-# Makefile for m68k-specific library files..
-#
-
-lib-y  := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
-          checksum.o string.o uaccess.o
+ifdef CONFIG_MMU
+include arch/m68k/lib/Makefile_mm
+else
+include arch/m68k/lib/Makefile_no
+endif
diff --git a/arch/m68k/lib/Makefile_mm b/arch/m68k/lib/Makefile_mm
new file mode 100644 (file)
index 0000000..af9abf8
--- /dev/null
@@ -0,0 +1,6 @@
+#
+# Makefile for m68k-specific library files..
+#
+
+lib-y  := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
+          checksum.o string.o uaccess.o
index 6216f12a756b56121361639116794e35d8356ad2..1297536060de6089b8d65dddc834655a83f9b3dc 100644 (file)
@@ -1,425 +1,5 @@
-/*
- * INET                An implementation of the TCP/IP protocol suite for the LINUX
- *             operating system.  INET is implemented using the  BSD Socket
- *             interface as the means of communication with the user level.
- *
- *             IP/TCP/UDP checksumming routines
- *
- * Authors:    Jorge Cwik, <jorge@laser.satlink.net>
- *             Arnt Gulbrandsen, <agulbra@nvg.unit.no>
- *             Tom May, <ftom@netcom.com>
- *             Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de>
- *             Lots of code moved from tcp.c and ip.c; see those files
- *             for more names.
- *
- * 03/02/96    Jes Sorensen, Andreas Schwab, Roman Hodek:
- *             Fixed some nasty bugs, causing some horrible crashes.
- *             A: At some points, the sum (%0) was used as
- *             length-counter instead of the length counter
- *             (%1). Thanks to Roman Hodek for pointing this out.
- *             B: GCC seems to mess up if one uses too many
- *             data-registers to hold input values and one tries to
- *             specify d0 and d1 as scratch registers. Letting gcc
- *             choose these registers itself solves the problem.
- *
- *             This program is free software; you can redistribute it and/or
- *             modify it under the terms of the GNU General Public License
- *             as published by the Free Software Foundation; either version
- *             2 of the License, or (at your option) any later version.
- *
- * 1998/8/31   Andreas Schwab:
- *             Zero out rest of buffer on exception in
- *             csum_partial_copy_from_user.
- */
-
-#include <linux/module.h>
-#include <net/checksum.h>
-
-/*
- * computes a partial checksum, e.g. for TCP/UDP fragments
- */
-
-__wsum csum_partial(const void *buff, int len, __wsum sum)
-{
-       unsigned long tmp1, tmp2;
-         /*
-          * Experiments with ethernet and slip connections show that buff
-          * is aligned on either a 2-byte or 4-byte boundary.
-          */
-       __asm__("movel %2,%3\n\t"
-               "btst #1,%3\n\t"        /* Check alignment */
-               "jeq 2f\n\t"
-               "subql #2,%1\n\t"       /* buff%4==2: treat first word */
-               "jgt 1f\n\t"
-               "addql #2,%1\n\t"       /* len was == 2, treat only rest */
-               "jra 4f\n"
-            "1:\t"
-               "addw %2@+,%0\n\t"      /* add first word to sum */
-               "clrl %3\n\t"
-               "addxl %3,%0\n"         /* add X bit */
-            "2:\t"
-               /* unrolled loop for the main part: do 8 longs at once */
-               "movel %1,%3\n\t"       /* save len in tmp1 */
-               "lsrl #5,%1\n\t"        /* len/32 */
-               "jeq 2f\n\t"            /* not enough... */
-               "subql #1,%1\n"
-            "1:\t"
-               "movel %2@+,%4\n\t"
-               "addxl %4,%0\n\t"
-               "movel %2@+,%4\n\t"
-               "addxl %4,%0\n\t"
-               "movel %2@+,%4\n\t"
-               "addxl %4,%0\n\t"
-               "movel %2@+,%4\n\t"
-               "addxl %4,%0\n\t"
-               "movel %2@+,%4\n\t"
-               "addxl %4,%0\n\t"
-               "movel %2@+,%4\n\t"
-               "addxl %4,%0\n\t"
-               "movel %2@+,%4\n\t"
-               "addxl %4,%0\n\t"
-               "movel %2@+,%4\n\t"
-               "addxl %4,%0\n\t"
-               "dbra %1,1b\n\t"
-               "clrl %4\n\t"
-               "addxl %4,%0\n\t"       /* add X bit */
-               "clrw %1\n\t"
-               "subql #1,%1\n\t"
-               "jcc 1b\n"
-            "2:\t"
-               "movel %3,%1\n\t"       /* restore len from tmp1 */
-               "andw #0x1c,%3\n\t"     /* number of rest longs */
-               "jeq 4f\n\t"
-               "lsrw #2,%3\n\t"
-               "subqw #1,%3\n"
-            "3:\t"
-               /* loop for rest longs */
-               "movel %2@+,%4\n\t"
-               "addxl %4,%0\n\t"
-               "dbra %3,3b\n\t"
-               "clrl %4\n\t"
-               "addxl %4,%0\n"         /* add X bit */
-            "4:\t"
-               /* now check for rest bytes that do not fit into longs */
-               "andw #3,%1\n\t"
-               "jeq 7f\n\t"
-               "clrl %4\n\t"           /* clear tmp2 for rest bytes */
-               "subqw #2,%1\n\t"
-               "jlt 5f\n\t"
-               "movew %2@+,%4\n\t"     /* have rest >= 2: get word */
-               "swap %4\n\t"           /* into bits 16..31 */
-               "tstw %1\n\t"           /* another byte? */
-               "jeq 6f\n"
-            "5:\t"
-               "moveb %2@,%4\n\t"      /* have odd rest: get byte */
-               "lslw #8,%4\n\t"        /* into bits 8..15; 16..31 untouched */
-            "6:\t"
-               "addl %4,%0\n\t"        /* now add rest long to sum */
-               "clrl %4\n\t"
-               "addxl %4,%0\n"         /* add X bit */
-            "7:\t"
-               : "=d" (sum), "=d" (len), "=a" (buff),
-                 "=&d" (tmp1), "=&d" (tmp2)
-               : "0" (sum), "1" (len), "2" (buff)
-           );
-       return(sum);
-}
-
-EXPORT_SYMBOL(csum_partial);
-
-
-/*
- * copy from user space while checksumming, with exception handling.
- */
-
-__wsum
-csum_partial_copy_from_user(const void __user *src, void *dst,
-                           int len, __wsum sum, int *csum_err)
-{
-       /*
-        * GCC doesn't like more than 10 operands for the asm
-        * statements so we have to use tmp2 for the error
-        * code.
-        */
-       unsigned long tmp1, tmp2;
-
-       __asm__("movel %2,%4\n\t"
-               "btst #1,%4\n\t"        /* Check alignment */
-               "jeq 2f\n\t"
-               "subql #2,%1\n\t"       /* buff%4==2: treat first word */
-               "jgt 1f\n\t"
-               "addql #2,%1\n\t"       /* len was == 2, treat only rest */
-               "jra 4f\n"
-            "1:\n"
-            "10:\t"
-               "movesw %2@+,%4\n\t"    /* add first word to sum */
-               "addw %4,%0\n\t"
-               "movew %4,%3@+\n\t"
-               "clrl %4\n\t"
-               "addxl %4,%0\n"         /* add X bit */
-            "2:\t"
-               /* unrolled loop for the main part: do 8 longs at once */
-               "movel %1,%4\n\t"       /* save len in tmp1 */
-               "lsrl #5,%1\n\t"        /* len/32 */
-               "jeq 2f\n\t"            /* not enough... */
-               "subql #1,%1\n"
-            "1:\n"
-            "11:\t"
-               "movesl %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-            "12:\t"
-               "movesl %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-            "13:\t"
-               "movesl %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-            "14:\t"
-               "movesl %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-            "15:\t"
-               "movesl %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-            "16:\t"
-               "movesl %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-            "17:\t"
-               "movesl %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-            "18:\t"
-               "movesl %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "dbra %1,1b\n\t"
-               "clrl %5\n\t"
-               "addxl %5,%0\n\t"       /* add X bit */
-               "clrw %1\n\t"
-               "subql #1,%1\n\t"
-               "jcc 1b\n"
-            "2:\t"
-               "movel %4,%1\n\t"       /* restore len from tmp1 */
-               "andw #0x1c,%4\n\t"     /* number of rest longs */
-               "jeq 4f\n\t"
-               "lsrw #2,%4\n\t"
-               "subqw #1,%4\n"
-            "3:\n"
-               /* loop for rest longs */
-            "19:\t"
-               "movesl %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "dbra %4,3b\n\t"
-               "clrl %5\n\t"
-               "addxl %5,%0\n"         /* add X bit */
-            "4:\t"
-               /* now check for rest bytes that do not fit into longs */
-               "andw #3,%1\n\t"
-               "jeq 7f\n\t"
-               "clrl %5\n\t"           /* clear tmp2 for rest bytes */
-               "subqw #2,%1\n\t"
-               "jlt 5f\n\t"
-            "20:\t"
-               "movesw %2@+,%5\n\t"    /* have rest >= 2: get word */
-               "movew %5,%3@+\n\t"
-               "swap %5\n\t"           /* into bits 16..31 */
-               "tstw %1\n\t"           /* another byte? */
-               "jeq 6f\n"
-            "5:\n"
-            "21:\t"
-               "movesb %2@,%5\n\t"     /* have odd rest: get byte */
-               "moveb %5,%3@+\n\t"
-               "lslw #8,%5\n\t"        /* into bits 8..15; 16..31 untouched */
-            "6:\t"
-               "addl %5,%0\n\t"        /* now add rest long to sum */
-               "clrl %5\n\t"
-               "addxl %5,%0\n\t"       /* add X bit */
-            "7:\t"
-               "clrl %5\n"             /* no error - clear return value */
-            "8:\n"
-               ".section .fixup,\"ax\"\n"
-               ".even\n"
-               /* If any exception occurs zero out the rest.
-                  Similarities with the code above are intentional :-) */
-            "90:\t"
-               "clrw %3@+\n\t"
-               "movel %1,%4\n\t"
-               "lsrl #5,%1\n\t"
-               "jeq 1f\n\t"
-               "subql #1,%1\n"
-            "91:\t"
-               "clrl %3@+\n"
-            "92:\t"
-               "clrl %3@+\n"
-            "93:\t"
-               "clrl %3@+\n"
-            "94:\t"
-               "clrl %3@+\n"
-            "95:\t"
-               "clrl %3@+\n"
-            "96:\t"
-               "clrl %3@+\n"
-            "97:\t"
-               "clrl %3@+\n"
-            "98:\t"
-               "clrl %3@+\n\t"
-               "dbra %1,91b\n\t"
-               "clrw %1\n\t"
-               "subql #1,%1\n\t"
-               "jcc 91b\n"
-            "1:\t"
-               "movel %4,%1\n\t"
-               "andw #0x1c,%4\n\t"
-               "jeq 1f\n\t"
-               "lsrw #2,%4\n\t"
-               "subqw #1,%4\n"
-            "99:\t"
-               "clrl %3@+\n\t"
-               "dbra %4,99b\n\t"
-            "1:\t"
-               "andw #3,%1\n\t"
-               "jeq 9f\n"
-            "100:\t"
-               "clrw %3@+\n\t"
-               "tstw %1\n\t"
-               "jeq 9f\n"
-            "101:\t"
-               "clrb %3@+\n"
-            "9:\t"
-#define STR(X) STR1(X)
-#define STR1(X) #X
-               "moveq #-" STR(EFAULT) ",%5\n\t"
-               "jra 8b\n"
-               ".previous\n"
-               ".section __ex_table,\"a\"\n"
-               ".long 10b,90b\n"
-               ".long 11b,91b\n"
-               ".long 12b,92b\n"
-               ".long 13b,93b\n"
-               ".long 14b,94b\n"
-               ".long 15b,95b\n"
-               ".long 16b,96b\n"
-               ".long 17b,97b\n"
-               ".long 18b,98b\n"
-               ".long 19b,99b\n"
-               ".long 20b,100b\n"
-               ".long 21b,101b\n"
-               ".previous"
-               : "=d" (sum), "=d" (len), "=a" (src), "=a" (dst),
-                 "=&d" (tmp1), "=d" (tmp2)
-               : "0" (sum), "1" (len), "2" (src), "3" (dst)
-           );
-
-       *csum_err = tmp2;
-
-       return(sum);
-}
-
-EXPORT_SYMBOL(csum_partial_copy_from_user);
-
-
-/*
- * copy from kernel space while checksumming, otherwise like csum_partial
- */
-
-__wsum
-csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
-{
-       unsigned long tmp1, tmp2;
-       __asm__("movel %2,%4\n\t"
-               "btst #1,%4\n\t"        /* Check alignment */
-               "jeq 2f\n\t"
-               "subql #2,%1\n\t"       /* buff%4==2: treat first word */
-               "jgt 1f\n\t"
-               "addql #2,%1\n\t"       /* len was == 2, treat only rest */
-               "jra 4f\n"
-            "1:\t"
-               "movew %2@+,%4\n\t"     /* add first word to sum */
-               "addw %4,%0\n\t"
-               "movew %4,%3@+\n\t"
-               "clrl %4\n\t"
-               "addxl %4,%0\n"         /* add X bit */
-            "2:\t"
-               /* unrolled loop for the main part: do 8 longs at once */
-               "movel %1,%4\n\t"       /* save len in tmp1 */
-               "lsrl #5,%1\n\t"        /* len/32 */
-               "jeq 2f\n\t"            /* not enough... */
-               "subql #1,%1\n"
-            "1:\t"
-               "movel %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "movel %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "movel %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "movel %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "movel %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "movel %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "movel %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "movel %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "dbra %1,1b\n\t"
-               "clrl %5\n\t"
-               "addxl %5,%0\n\t"       /* add X bit */
-               "clrw %1\n\t"
-               "subql #1,%1\n\t"
-               "jcc 1b\n"
-            "2:\t"
-               "movel %4,%1\n\t"       /* restore len from tmp1 */
-               "andw #0x1c,%4\n\t"     /* number of rest longs */
-               "jeq 4f\n\t"
-               "lsrw #2,%4\n\t"
-               "subqw #1,%4\n"
-            "3:\t"
-               /* loop for rest longs */
-               "movel %2@+,%5\n\t"
-               "addxl %5,%0\n\t"
-               "movel %5,%3@+\n\t"
-               "dbra %4,3b\n\t"
-               "clrl %5\n\t"
-               "addxl %5,%0\n"         /* add X bit */
-            "4:\t"
-               /* now check for rest bytes that do not fit into longs */
-               "andw #3,%1\n\t"
-               "jeq 7f\n\t"
-               "clrl %5\n\t"           /* clear tmp2 for rest bytes */
-               "subqw #2,%1\n\t"
-               "jlt 5f\n\t"
-               "movew %2@+,%5\n\t"     /* have rest >= 2: get word */
-               "movew %5,%3@+\n\t"
-               "swap %5\n\t"           /* into bits 16..31 */
-               "tstw %1\n\t"           /* another byte? */
-               "jeq 6f\n"
-            "5:\t"
-               "moveb %2@,%5\n\t"      /* have odd rest: get byte */
-               "moveb %5,%3@+\n\t"
-               "lslw #8,%5\n"          /* into bits 8..15; 16..31 untouched */
-            "6:\t"
-               "addl %5,%0\n\t"        /* now add rest long to sum */
-               "clrl %5\n\t"
-               "addxl %5,%0\n"         /* add X bit */
-            "7:\t"
-               : "=d" (sum), "=d" (len), "=a" (src), "=a" (dst),
-                 "=&d" (tmp1), "=&d" (tmp2)
-               : "0" (sum), "1" (len), "2" (src), "3" (dst)
-           );
-    return(sum);
-}
-EXPORT_SYMBOL(csum_partial_copy_nocheck);
+#ifdef CONFIG_MMU
+#include "checksum_mm.c"
+#else
+#include "checksum_no.c"
+#endif
diff --git a/arch/m68k/lib/checksum_mm.c b/arch/m68k/lib/checksum_mm.c
new file mode 100644 (file)
index 0000000..6216f12
--- /dev/null
@@ -0,0 +1,425 @@
+/*
+ * INET                An implementation of the TCP/IP protocol suite for the LINUX
+ *             operating system.  INET is implemented using the  BSD Socket
+ *             interface as the means of communication with the user level.
+ *
+ *             IP/TCP/UDP checksumming routines
+ *
+ * Authors:    Jorge Cwik, <jorge@laser.satlink.net>
+ *             Arnt Gulbrandsen, <agulbra@nvg.unit.no>
+ *             Tom May, <ftom@netcom.com>
+ *             Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de>
+ *             Lots of code moved from tcp.c and ip.c; see those files
+ *             for more names.
+ *
+ * 03/02/96    Jes Sorensen, Andreas Schwab, Roman Hodek:
+ *             Fixed some nasty bugs, causing some horrible crashes.
+ *             A: At some points, the sum (%0) was used as
+ *             length-counter instead of the length counter
+ *             (%1). Thanks to Roman Hodek for pointing this out.
+ *             B: GCC seems to mess up if one uses too many
+ *             data-registers to hold input values and one tries to
+ *             specify d0 and d1 as scratch registers. Letting gcc
+ *             choose these registers itself solves the problem.
+ *
+ *             This program is free software; you can redistribute it and/or
+ *             modify it under the terms of the GNU General Public License
+ *             as published by the Free Software Foundation; either version
+ *             2 of the License, or (at your option) any later version.
+ *
+ * 1998/8/31   Andreas Schwab:
+ *             Zero out rest of buffer on exception in
+ *             csum_partial_copy_from_user.
+ */
+
+#include <linux/module.h>
+#include <net/checksum.h>
+
+/*
+ * computes a partial checksum, e.g. for TCP/UDP fragments
+ */
+
+__wsum csum_partial(const void *buff, int len, __wsum sum)
+{
+       unsigned long tmp1, tmp2;
+         /*
+          * Experiments with ethernet and slip connections show that buff
+          * is aligned on either a 2-byte or 4-byte boundary.
+          */
+       __asm__("movel %2,%3\n\t"
+               "btst #1,%3\n\t"        /* Check alignment */
+               "jeq 2f\n\t"
+               "subql #2,%1\n\t"       /* buff%4==2: treat first word */
+               "jgt 1f\n\t"
+               "addql #2,%1\n\t"       /* len was == 2, treat only rest */
+               "jra 4f\n"
+            "1:\t"
+               "addw %2@+,%0\n\t"      /* add first word to sum */
+               "clrl %3\n\t"
+               "addxl %3,%0\n"         /* add X bit */
+            "2:\t"
+               /* unrolled loop for the main part: do 8 longs at once */
+               "movel %1,%3\n\t"       /* save len in tmp1 */
+               "lsrl #5,%1\n\t"        /* len/32 */
+               "jeq 2f\n\t"            /* not enough... */
+               "subql #1,%1\n"
+            "1:\t"
+               "movel %2@+,%4\n\t"
+               "addxl %4,%0\n\t"
+               "movel %2@+,%4\n\t"
+               "addxl %4,%0\n\t"
+               "movel %2@+,%4\n\t"
+               "addxl %4,%0\n\t"
+               "movel %2@+,%4\n\t"
+               "addxl %4,%0\n\t"
+               "movel %2@+,%4\n\t"
+               "addxl %4,%0\n\t"
+               "movel %2@+,%4\n\t"
+               "addxl %4,%0\n\t"
+               "movel %2@+,%4\n\t"
+               "addxl %4,%0\n\t"
+               "movel %2@+,%4\n\t"
+               "addxl %4,%0\n\t"
+               "dbra %1,1b\n\t"
+               "clrl %4\n\t"
+               "addxl %4,%0\n\t"       /* add X bit */
+               "clrw %1\n\t"
+               "subql #1,%1\n\t"
+               "jcc 1b\n"
+            "2:\t"
+               "movel %3,%1\n\t"       /* restore len from tmp1 */
+               "andw #0x1c,%3\n\t"     /* number of rest longs */
+               "jeq 4f\n\t"
+               "lsrw #2,%3\n\t"
+               "subqw #1,%3\n"
+            "3:\t"
+               /* loop for rest longs */
+               "movel %2@+,%4\n\t"
+               "addxl %4,%0\n\t"
+               "dbra %3,3b\n\t"
+               "clrl %4\n\t"
+               "addxl %4,%0\n"         /* add X bit */
+            "4:\t"
+               /* now check for rest bytes that do not fit into longs */
+               "andw #3,%1\n\t"
+               "jeq 7f\n\t"
+               "clrl %4\n\t"           /* clear tmp2 for rest bytes */
+               "subqw #2,%1\n\t"
+               "jlt 5f\n\t"
+               "movew %2@+,%4\n\t"     /* have rest >= 2: get word */
+               "swap %4\n\t"           /* into bits 16..31 */
+               "tstw %1\n\t"           /* another byte? */
+               "jeq 6f\n"
+            "5:\t"
+               "moveb %2@,%4\n\t"      /* have odd rest: get byte */
+               "lslw #8,%4\n\t"        /* into bits 8..15; 16..31 untouched */
+            "6:\t"
+               "addl %4,%0\n\t"        /* now add rest long to sum */
+               "clrl %4\n\t"
+               "addxl %4,%0\n"         /* add X bit */
+            "7:\t"
+               : "=d" (sum), "=d" (len), "=a" (buff),
+                 "=&d" (tmp1), "=&d" (tmp2)
+               : "0" (sum), "1" (len), "2" (buff)
+           );
+       return(sum);
+}
+
+EXPORT_SYMBOL(csum_partial);
+
+
+/*
+ * copy from user space while checksumming, with exception handling.
+ */
+
+__wsum
+csum_partial_copy_from_user(const void __user *src, void *dst,
+                           int len, __wsum sum, int *csum_err)
+{
+       /*
+        * GCC doesn't like more than 10 operands for the asm
+        * statements so we have to use tmp2 for the error
+        * code.
+        */
+       unsigned long tmp1, tmp2;
+
+       __asm__("movel %2,%4\n\t"
+               "btst #1,%4\n\t"        /* Check alignment */
+               "jeq 2f\n\t"
+               "subql #2,%1\n\t"       /* buff%4==2: treat first word */
+               "jgt 1f\n\t"
+               "addql #2,%1\n\t"       /* len was == 2, treat only rest */
+               "jra 4f\n"
+            "1:\n"
+            "10:\t"
+               "movesw %2@+,%4\n\t"    /* add first word to sum */
+               "addw %4,%0\n\t"
+               "movew %4,%3@+\n\t"
+               "clrl %4\n\t"
+               "addxl %4,%0\n"         /* add X bit */
+            "2:\t"
+               /* unrolled loop for the main part: do 8 longs at once */
+               "movel %1,%4\n\t"       /* save len in tmp1 */
+               "lsrl #5,%1\n\t"        /* len/32 */
+               "jeq 2f\n\t"            /* not enough... */
+               "subql #1,%1\n"
+            "1:\n"
+            "11:\t"
+               "movesl %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+            "12:\t"
+               "movesl %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+            "13:\t"
+               "movesl %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+            "14:\t"
+               "movesl %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+            "15:\t"
+               "movesl %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+            "16:\t"
+               "movesl %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+            "17:\t"
+               "movesl %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+            "18:\t"
+               "movesl %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "dbra %1,1b\n\t"
+               "clrl %5\n\t"
+               "addxl %5,%0\n\t"       /* add X bit */
+               "clrw %1\n\t"
+               "subql #1,%1\n\t"
+               "jcc 1b\n"
+            "2:\t"
+               "movel %4,%1\n\t"       /* restore len from tmp1 */
+               "andw #0x1c,%4\n\t"     /* number of rest longs */
+               "jeq 4f\n\t"
+               "lsrw #2,%4\n\t"
+               "subqw #1,%4\n"
+            "3:\n"
+               /* loop for rest longs */
+            "19:\t"
+               "movesl %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "dbra %4,3b\n\t"
+               "clrl %5\n\t"
+               "addxl %5,%0\n"         /* add X bit */
+            "4:\t"
+               /* now check for rest bytes that do not fit into longs */
+               "andw #3,%1\n\t"
+               "jeq 7f\n\t"
+               "clrl %5\n\t"           /* clear tmp2 for rest bytes */
+               "subqw #2,%1\n\t"
+               "jlt 5f\n\t"
+            "20:\t"
+               "movesw %2@+,%5\n\t"    /* have rest >= 2: get word */
+               "movew %5,%3@+\n\t"
+               "swap %5\n\t"           /* into bits 16..31 */
+               "tstw %1\n\t"           /* another byte? */
+               "jeq 6f\n"
+            "5:\n"
+            "21:\t"
+               "movesb %2@,%5\n\t"     /* have odd rest: get byte */
+               "moveb %5,%3@+\n\t"
+               "lslw #8,%5\n\t"        /* into bits 8..15; 16..31 untouched */
+            "6:\t"
+               "addl %5,%0\n\t"        /* now add rest long to sum */
+               "clrl %5\n\t"
+               "addxl %5,%0\n\t"       /* add X bit */
+            "7:\t"
+               "clrl %5\n"             /* no error - clear return value */
+            "8:\n"
+               ".section .fixup,\"ax\"\n"
+               ".even\n"
+               /* If any exception occurs zero out the rest.
+                  Similarities with the code above are intentional :-) */
+            "90:\t"
+               "clrw %3@+\n\t"
+               "movel %1,%4\n\t"
+               "lsrl #5,%1\n\t"
+               "jeq 1f\n\t"
+               "subql #1,%1\n"
+            "91:\t"
+               "clrl %3@+\n"
+            "92:\t"
+               "clrl %3@+\n"
+            "93:\t"
+               "clrl %3@+\n"
+            "94:\t"
+               "clrl %3@+\n"
+            "95:\t"
+               "clrl %3@+\n"
+            "96:\t"
+               "clrl %3@+\n"
+            "97:\t"
+               "clrl %3@+\n"
+            "98:\t"
+               "clrl %3@+\n\t"
+               "dbra %1,91b\n\t"
+               "clrw %1\n\t"
+               "subql #1,%1\n\t"
+               "jcc 91b\n"
+            "1:\t"
+               "movel %4,%1\n\t"
+               "andw #0x1c,%4\n\t"
+               "jeq 1f\n\t"
+               "lsrw #2,%4\n\t"
+               "subqw #1,%4\n"
+            "99:\t"
+               "clrl %3@+\n\t"
+               "dbra %4,99b\n\t"
+            "1:\t"
+               "andw #3,%1\n\t"
+               "jeq 9f\n"
+            "100:\t"
+               "clrw %3@+\n\t"
+               "tstw %1\n\t"
+               "jeq 9f\n"
+            "101:\t"
+               "clrb %3@+\n"
+            "9:\t"
+#define STR(X) STR1(X)
+#define STR1(X) #X
+               "moveq #-" STR(EFAULT) ",%5\n\t"
+               "jra 8b\n"
+               ".previous\n"
+               ".section __ex_table,\"a\"\n"
+               ".long 10b,90b\n"
+               ".long 11b,91b\n"
+               ".long 12b,92b\n"
+               ".long 13b,93b\n"
+               ".long 14b,94b\n"
+               ".long 15b,95b\n"
+               ".long 16b,96b\n"
+               ".long 17b,97b\n"
+               ".long 18b,98b\n"
+               ".long 19b,99b\n"
+               ".long 20b,100b\n"
+               ".long 21b,101b\n"
+               ".previous"
+               : "=d" (sum), "=d" (len), "=a" (src), "=a" (dst),
+                 "=&d" (tmp1), "=d" (tmp2)
+               : "0" (sum), "1" (len), "2" (src), "3" (dst)
+           );
+
+       *csum_err = tmp2;
+
+       return(sum);
+}
+
+EXPORT_SYMBOL(csum_partial_copy_from_user);
+
+
+/*
+ * copy from kernel space while checksumming, otherwise like csum_partial
+ */
+
+__wsum
+csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
+{
+       unsigned long tmp1, tmp2;
+       __asm__("movel %2,%4\n\t"
+               "btst #1,%4\n\t"        /* Check alignment */
+               "jeq 2f\n\t"
+               "subql #2,%1\n\t"       /* buff%4==2: treat first word */
+               "jgt 1f\n\t"
+               "addql #2,%1\n\t"       /* len was == 2, treat only rest */
+               "jra 4f\n"
+            "1:\t"
+               "movew %2@+,%4\n\t"     /* add first word to sum */
+               "addw %4,%0\n\t"
+               "movew %4,%3@+\n\t"
+               "clrl %4\n\t"
+               "addxl %4,%0\n"         /* add X bit */
+            "2:\t"
+               /* unrolled loop for the main part: do 8 longs at once */
+               "movel %1,%4\n\t"       /* save len in tmp1 */
+               "lsrl #5,%1\n\t"        /* len/32 */
+               "jeq 2f\n\t"            /* not enough... */
+               "subql #1,%1\n"
+            "1:\t"
+               "movel %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "movel %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "movel %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "movel %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "movel %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "movel %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "movel %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "movel %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "dbra %1,1b\n\t"
+               "clrl %5\n\t"
+               "addxl %5,%0\n\t"       /* add X bit */
+               "clrw %1\n\t"
+               "subql #1,%1\n\t"
+               "jcc 1b\n"
+            "2:\t"
+               "movel %4,%1\n\t"       /* restore len from tmp1 */
+               "andw #0x1c,%4\n\t"     /* number of rest longs */
+               "jeq 4f\n\t"
+               "lsrw #2,%4\n\t"
+               "subqw #1,%4\n"
+            "3:\t"
+               /* loop for rest longs */
+               "movel %2@+,%5\n\t"
+               "addxl %5,%0\n\t"
+               "movel %5,%3@+\n\t"
+               "dbra %4,3b\n\t"
+               "clrl %5\n\t"
+               "addxl %5,%0\n"         /* add X bit */
+            "4:\t"
+               /* now check for rest bytes that do not fit into longs */
+               "andw #3,%1\n\t"
+               "jeq 7f\n\t"
+               "clrl %5\n\t"           /* clear tmp2 for rest bytes */
+               "subqw #2,%1\n\t"
+               "jlt 5f\n\t"
+               "movew %2@+,%5\n\t"     /* have rest >= 2: get word */
+               "movew %5,%3@+\n\t"
+               "swap %5\n\t"           /* into bits 16..31 */
+               "tstw %1\n\t"           /* another byte? */
+               "jeq 6f\n"
+            "5:\t"
+               "moveb %2@,%5\n\t"      /* have odd rest: get byte */
+               "moveb %5,%3@+\n\t"
+               "lslw #8,%5\n"          /* into bits 8..15; 16..31 untouched */
+            "6:\t"
+               "addl %5,%0\n\t"        /* now add rest long to sum */
+               "clrl %5\n\t"
+               "addxl %5,%0\n"         /* add X bit */
+            "7:\t"
+               : "=d" (sum), "=d" (len), "=a" (src), "=a" (dst),
+                 "=&d" (tmp1), "=&d" (tmp2)
+               : "0" (sum), "1" (len), "2" (src), "3" (dst)
+           );
+    return(sum);
+}
+EXPORT_SYMBOL(csum_partial_copy_nocheck);
index be4f275649e317a8ae10301d0ffec76c8b4f5441..16e0eb338ee0e5303a44fa3180f0bcdcd08e3d0d 100644 (file)
@@ -1,63 +1,5 @@
-/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and
-                          gcc-2.7.2.3/longlong.h which is: */
-/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
-
-#define BITS_PER_UNIT 8
-
-#define umul_ppmm(w1, w0, u, v) \
-  __asm__ ("mulu%.l %3,%1:%0"                                          \
-           : "=d" ((USItype)(w0)),                                     \
-             "=d" ((USItype)(w1))                                      \
-           : "%0" ((USItype)(u)),                                      \
-             "dmi" ((USItype)(v)))
-
-#define __umulsidi3(u, v) \
-  ({DIunion __w;                                                       \
-    umul_ppmm (__w.s.high, __w.s.low, u, v);                           \
-    __w.ll; })
-
-typedef                 int SItype     __attribute__ ((mode (SI)));
-typedef unsigned int USItype   __attribute__ ((mode (SI)));
-typedef                 int DItype     __attribute__ ((mode (DI)));
-typedef int word_type __attribute__ ((mode (__word__)));
-
-struct DIstruct {SItype high, low;};
-
-typedef union
-{
-  struct DIstruct s;
-  DItype ll;
-} DIunion;
-
-DItype
-__muldi3 (DItype u, DItype v)
-{
-  DIunion w;
-  DIunion uu, vv;
-
-  uu.ll = u,
-  vv.ll = v;
-
-  w.ll = __umulsidi3 (uu.s.low, vv.s.low);
-  w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high
-              + (USItype) uu.s.high * (USItype) vv.s.low);
-
-  return w.ll;
-}
+#ifdef CONFIG_MMU
+#include "muldi3_mm.c"
+#else
+#include "muldi3_no.c"
+#endif
similarity index 60%
rename from arch/m68knommu/lib/ashrdi3.c
rename to arch/m68k/lib/muldi3_mm.c
index 78efb65e315a94bfe5009f45498febd5a6f7ce33..be4f275649e317a8ae10301d0ffec76c8b4f5441 100644 (file)
@@ -1,4 +1,5 @@
-/* ashrdi3.c extracted from gcc-2.7.2/libgcc2.c which is: */
+/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and
+                          gcc-2.7.2.3/longlong.h which is: */
 /* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
@@ -20,7 +21,19 @@ Boston, MA 02111-1307, USA.  */
 
 #define BITS_PER_UNIT 8
 
-typedef         int SItype     __attribute__ ((mode (SI)));
+#define umul_ppmm(w1, w0, u, v) \
+  __asm__ ("mulu%.l %3,%1:%0"                                          \
+           : "=d" ((USItype)(w0)),                                     \
+             "=d" ((USItype)(w1))                                      \
+           : "%0" ((USItype)(u)),                                      \
+             "dmi" ((USItype)(v)))
+
+#define __umulsidi3(u, v) \
+  ({DIunion __w;                                                       \
+    umul_ppmm (__w.s.high, __w.s.low, u, v);                           \
+    __w.ll; })
+
+typedef                 int SItype     __attribute__ ((mode (SI)));
 typedef unsigned int USItype   __attribute__ ((mode (SI)));
 typedef                 int DItype     __attribute__ ((mode (DI)));
 typedef int word_type __attribute__ ((mode (__word__)));
@@ -34,30 +47,17 @@ typedef union
 } DIunion;
 
 DItype
-__ashrdi3 (DItype u, word_type b)
+__muldi3 (DItype u, DItype v)
 {
   DIunion w;
-  word_type bm;
-  DIunion uu;
-
-  if (b == 0)
-    return u;
-
-  uu.ll = u;
-
-  bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
-  if (bm <= 0)
-    {
-      /* w.s.high = 1..1 or 0..0 */
-      w.s.high = uu.s.high >> (sizeof (SItype) * BITS_PER_UNIT - 1);
-      w.s.low = uu.s.high >> -bm;
-    }
-  else
-    {
-      USItype carries = (USItype)uu.s.high << bm;
-      w.s.high = uu.s.high >> b;
-      w.s.low = ((USItype)uu.s.low >> b) | carries;
-    }
+  DIunion uu, vv;
+
+  uu.ll = u,
+  vv.ll = v;
+
+  w.ll = __umulsidi3 (uu.s.low, vv.s.low);
+  w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high
+              + (USItype) uu.s.high * (USItype) vv.s.low);
 
   return w.ll;
 }
index 5eaa43c4cb3c81c02317ad162c5404ad76f96b81..b60270e4954bb256e17ca0af97341d3d1766efec 100644 (file)
@@ -1,8 +1,5 @@
-#
-# Makefile for the linux m68k-specific parts of the memory manager.
-#
-
-obj-y          := cache.o init.o fault.o hwtest.o
-
-obj-$(CONFIG_MMU_MOTOROLA)     += kmap.o memory.o motorola.o
-obj-$(CONFIG_MMU_SUN3)         += sun3kmap.o sun3mmu.o
+ifdef CONFIG_MMU
+include arch/m68k/mm/Makefile_mm
+else
+include arch/m68k/mm/Makefile_no
+endif
diff --git a/arch/m68k/mm/Makefile_mm b/arch/m68k/mm/Makefile_mm
new file mode 100644 (file)
index 0000000..5eaa43c
--- /dev/null
@@ -0,0 +1,8 @@
+#
+# Makefile for the linux m68k-specific parts of the memory manager.
+#
+
+obj-y          := cache.o init.o fault.o hwtest.o
+
+obj-$(CONFIG_MMU_MOTOROLA)     += kmap.o memory.o motorola.o
+obj-$(CONFIG_MMU_SUN3)         += sun3kmap.o sun3mmu.o
index 8bc842554e5b4618ad3e77208dc5872cd184fef2..27b5ce089a34f5e33afae745490f3462311482e2 100644 (file)
@@ -1,150 +1,5 @@
-/*
- *  linux/arch/m68k/mm/init.c
- *
- *  Copyright (C) 1995  Hamish Macdonald
- *
- *  Contains common initialization routines, specific init code moved
- *  to motorola.c and sun3mmu.c
- */
-
-#include <linux/module.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/gfp.h>
-
-#include <asm/setup.h>
-#include <asm/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/system.h>
-#include <asm/machdep.h>
-#include <asm/io.h>
-#ifdef CONFIG_ATARI
-#include <asm/atari_stram.h>
-#endif
-#include <asm/sections.h>
-#include <asm/tlb.h>
-
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-
-pg_data_t pg_data_map[MAX_NUMNODES];
-EXPORT_SYMBOL(pg_data_map);
-
-int m68k_virt_to_node_shift;
-
-#ifndef CONFIG_SINGLE_MEMORY_CHUNK
-pg_data_t *pg_data_table[65];
-EXPORT_SYMBOL(pg_data_table);
-#endif
-
-void __init m68k_setup_node(int node)
-{
-#ifndef CONFIG_SINGLE_MEMORY_CHUNK
-       struct mem_info *info = m68k_memory + node;
-       int i, end;
-
-       i = (unsigned long)phys_to_virt(info->addr) >> __virt_to_node_shift();
-       end = (unsigned long)phys_to_virt(info->addr + info->size - 1) >> __virt_to_node_shift();
-       for (; i <= end; i++) {
-               if (pg_data_table[i])
-                       printk("overlap at %u for chunk %u\n", i, node);
-               pg_data_table[i] = pg_data_map + node;
-       }
-#endif
-       pg_data_map[node].bdata = bootmem_node_data + node;
-       node_set_online(node);
-}
-
-
-/*
- * ZERO_PAGE is a special page that is used for zero-initialized
- * data and COW.
- */
-
-void *empty_zero_page;
-EXPORT_SYMBOL(empty_zero_page);
-
-extern void init_pointer_table(unsigned long ptable);
-
-/* References to section boundaries */
-
-extern pmd_t *zero_pgtable;
-
-void __init mem_init(void)
-{
-       pg_data_t *pgdat;
-       int codepages = 0;
-       int datapages = 0;
-       int initpages = 0;
-       int i;
-
-#ifdef CONFIG_ATARI
-       if (MACH_IS_ATARI)
-               atari_stram_mem_init_hook();
-#endif
-
-       /* this will put all memory onto the freelists */
-       totalram_pages = num_physpages = 0;
-       for_each_online_pgdat(pgdat) {
-               num_physpages += pgdat->node_present_pages;
-
-               totalram_pages += free_all_bootmem_node(pgdat);
-               for (i = 0; i < pgdat->node_spanned_pages; i++) {
-                       struct page *page = pgdat->node_mem_map + i;
-                       char *addr = page_to_virt(page);
-
-                       if (!PageReserved(page))
-                               continue;
-                       if (addr >= _text &&
-                           addr < _etext)
-                               codepages++;
-                       else if (addr >= __init_begin &&
-                                addr < __init_end)
-                               initpages++;
-                       else
-                               datapages++;
-               }
-       }
-
-#ifndef CONFIG_SUN3
-       /* insert pointer tables allocated so far into the tablelist */
-       init_pointer_table((unsigned long)kernel_pg_dir);
-       for (i = 0; i < PTRS_PER_PGD; i++) {
-               if (pgd_present(kernel_pg_dir[i]))
-                       init_pointer_table(__pgd_page(kernel_pg_dir[i]));
-       }
-
-       /* insert also pointer table that we used to unmap the zero page */
-       if (zero_pgtable)
-               init_pointer_table((unsigned long)zero_pgtable);
-#endif
-
-       printk("Memory: %luk/%luk available (%dk kernel code, %dk data, %dk init)\n",
-              nr_free_pages() << (PAGE_SHIFT-10),
-              totalram_pages << (PAGE_SHIFT-10),
-              codepages << (PAGE_SHIFT-10),
-              datapages << (PAGE_SHIFT-10),
-              initpages << (PAGE_SHIFT-10));
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-       int pages = 0;
-       for (; start < end; start += PAGE_SIZE) {
-               ClearPageReserved(virt_to_page(start));
-               init_page_count(virt_to_page(start));
-               free_page(start);
-               totalram_pages++;
-               pages++;
-       }
-       printk ("Freeing initrd memory: %dk freed\n", pages);
-}
+#ifdef CONFIG_MMU
+#include "init_mm.c"
+#else
+#include "init_no.c"
 #endif
diff --git a/arch/m68k/mm/init_mm.c b/arch/m68k/mm/init_mm.c
new file mode 100644 (file)
index 0000000..8bc8425
--- /dev/null
@@ -0,0 +1,150 @@
+/*
+ *  linux/arch/m68k/mm/init.c
+ *
+ *  Copyright (C) 1995  Hamish Macdonald
+ *
+ *  Contains common initialization routines, specific init code moved
+ *  to motorola.c and sun3mmu.c
+ */
+
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <linux/gfp.h>
+
+#include <asm/setup.h>
+#include <asm/uaccess.h>
+#include <asm/page.h>
+#include <asm/pgalloc.h>
+#include <asm/system.h>
+#include <asm/machdep.h>
+#include <asm/io.h>
+#ifdef CONFIG_ATARI
+#include <asm/atari_stram.h>
+#endif
+#include <asm/sections.h>
+#include <asm/tlb.h>
+
+DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
+
+pg_data_t pg_data_map[MAX_NUMNODES];
+EXPORT_SYMBOL(pg_data_map);
+
+int m68k_virt_to_node_shift;
+
+#ifndef CONFIG_SINGLE_MEMORY_CHUNK
+pg_data_t *pg_data_table[65];
+EXPORT_SYMBOL(pg_data_table);
+#endif
+
+void __init m68k_setup_node(int node)
+{
+#ifndef CONFIG_SINGLE_MEMORY_CHUNK
+       struct mem_info *info = m68k_memory + node;
+       int i, end;
+
+       i = (unsigned long)phys_to_virt(info->addr) >> __virt_to_node_shift();
+       end = (unsigned long)phys_to_virt(info->addr + info->size - 1) >> __virt_to_node_shift();
+       for (; i <= end; i++) {
+               if (pg_data_table[i])
+                       printk("overlap at %u for chunk %u\n", i, node);
+               pg_data_table[i] = pg_data_map + node;
+       }
+#endif
+       pg_data_map[node].bdata = bootmem_node_data + node;
+       node_set_online(node);
+}
+
+
+/*
+ * ZERO_PAGE is a special page that is used for zero-initialized
+ * data and COW.
+ */
+
+void *empty_zero_page;
+EXPORT_SYMBOL(empty_zero_page);
+
+extern void init_pointer_table(unsigned long ptable);
+
+/* References to section boundaries */
+
+extern pmd_t *zero_pgtable;
+
+void __init mem_init(void)
+{
+       pg_data_t *pgdat;
+       int codepages = 0;
+       int datapages = 0;
+       int initpages = 0;
+       int i;
+
+#ifdef CONFIG_ATARI
+       if (MACH_IS_ATARI)
+               atari_stram_mem_init_hook();
+#endif
+
+       /* this will put all memory onto the freelists */
+       totalram_pages = num_physpages = 0;
+       for_each_online_pgdat(pgdat) {
+               num_physpages += pgdat->node_present_pages;
+
+               totalram_pages += free_all_bootmem_node(pgdat);
+               for (i = 0; i < pgdat->node_spanned_pages; i++) {
+                       struct page *page = pgdat->node_mem_map + i;
+                       char *addr = page_to_virt(page);
+
+                       if (!PageReserved(page))
+                               continue;
+                       if (addr >= _text &&
+                           addr < _etext)
+                               codepages++;
+                       else if (addr >= __init_begin &&
+                                addr < __init_end)
+                               initpages++;
+                       else
+                               datapages++;
+               }
+       }
+
+#ifndef CONFIG_SUN3
+       /* insert pointer tables allocated so far into the tablelist */
+       init_pointer_table((unsigned long)kernel_pg_dir);
+       for (i = 0; i < PTRS_PER_PGD; i++) {
+               if (pgd_present(kernel_pg_dir[i]))
+                       init_pointer_table(__pgd_page(kernel_pg_dir[i]));
+       }
+
+       /* insert also pointer table that we used to unmap the zero page */
+       if (zero_pgtable)
+               init_pointer_table((unsigned long)zero_pgtable);
+#endif
+
+       printk("Memory: %luk/%luk available (%dk kernel code, %dk data, %dk init)\n",
+              nr_free_pages() << (PAGE_SHIFT-10),
+              totalram_pages << (PAGE_SHIFT-10),
+              codepages << (PAGE_SHIFT-10),
+              datapages << (PAGE_SHIFT-10),
+              initpages << (PAGE_SHIFT-10));
+}
+
+#ifdef CONFIG_BLK_DEV_INITRD
+void free_initrd_mem(unsigned long start, unsigned long end)
+{
+       int pages = 0;
+       for (; start < end; start += PAGE_SIZE) {
+               ClearPageReserved(virt_to_page(start));
+               init_page_count(virt_to_page(start));
+               free_page(start);
+               totalram_pages++;
+               pages++;
+       }
+       printk ("Freeing initrd memory: %dk freed\n", pages);
+}
+#endif
index 69345849454b9c03991258aa1eff409472896e2b..a373d136b2b28547421a276b2789bc0d1f93b97d 100644 (file)
@@ -1,367 +1,5 @@
-/*
- *  linux/arch/m68k/mm/kmap.c
- *
- *  Copyright (C) 1997 Roman Hodek
- *
- *  10/01/99 cleaned up the code and changing to the same interface
- *          used by other architectures                /Roman Zippel
- */
-
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/io.h>
-#include <asm/system.h>
-
-#undef DEBUG
-
-#define PTRTREESIZE    (256*1024)
-
-/*
- * For 040/060 we can use the virtual memory area like other architectures,
- * but for 020/030 we want to use early termination page descriptor and we
- * can't mix this with normal page descriptors, so we have to copy that code
- * (mm/vmalloc.c) and return appriorate aligned addresses.
- */
-
-#ifdef CPU_M68040_OR_M68060_ONLY
-
-#define IO_SIZE                PAGE_SIZE
-
-static inline struct vm_struct *get_io_area(unsigned long size)
-{
-       return get_vm_area(size, VM_IOREMAP);
-}
-
-
-static inline void free_io_area(void *addr)
-{
-       vfree((void *)(PAGE_MASK & (unsigned long)addr));
-}
-
+#ifdef CONFIG_MMU
+#include "kmap_mm.c"
 #else
-
-#define IO_SIZE                (256*1024)
-
-static struct vm_struct *iolist;
-
-static struct vm_struct *get_io_area(unsigned long size)
-{
-       unsigned long addr;
-       struct vm_struct **p, *tmp, *area;
-
-       area = kmalloc(sizeof(*area), GFP_KERNEL);
-       if (!area)
-               return NULL;
-       addr = KMAP_START;
-       for (p = &iolist; (tmp = *p) ; p = &tmp->next) {
-               if (size + addr < (unsigned long)tmp->addr)
-                       break;
-               if (addr > KMAP_END-size) {
-                       kfree(area);
-                       return NULL;
-               }
-               addr = tmp->size + (unsigned long)tmp->addr;
-       }
-       area->addr = (void *)addr;
-       area->size = size + IO_SIZE;
-       area->next = *p;
-       *p = area;
-       return area;
-}
-
-static inline void free_io_area(void *addr)
-{
-       struct vm_struct **p, *tmp;
-
-       if (!addr)
-               return;
-       addr = (void *)((unsigned long)addr & -IO_SIZE);
-       for (p = &iolist ; (tmp = *p) ; p = &tmp->next) {
-               if (tmp->addr == addr) {
-                       *p = tmp->next;
-                       __iounmap(tmp->addr, tmp->size);
-                       kfree(tmp);
-                       return;
-               }
-       }
-}
-
+#include "kmap_no.c"
 #endif
-
-/*
- * Map some physical address range into the kernel address space.
- */
-/* Rewritten by Andreas Schwab to remove all races. */
-
-void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
-{
-       struct vm_struct *area;
-       unsigned long virtaddr, retaddr;
-       long offset;
-       pgd_t *pgd_dir;
-       pmd_t *pmd_dir;
-       pte_t *pte_dir;
-
-       /*
-        * Don't allow mappings that wrap..
-        */
-       if (!size || physaddr > (unsigned long)(-size))
-               return NULL;
-
-#ifdef CONFIG_AMIGA
-       if (MACH_IS_AMIGA) {
-               if ((physaddr >= 0x40000000) && (physaddr + size < 0x60000000)
-                   && (cacheflag == IOMAP_NOCACHE_SER))
-                       return (void __iomem *)physaddr;
-       }
-#endif
-
-#ifdef DEBUG
-       printk("ioremap: 0x%lx,0x%lx(%d) - ", physaddr, size, cacheflag);
-#endif
-       /*
-        * Mappings have to be aligned
-        */
-       offset = physaddr & (IO_SIZE - 1);
-       physaddr &= -IO_SIZE;
-       size = (size + offset + IO_SIZE - 1) & -IO_SIZE;
-
-       /*
-        * Ok, go for it..
-        */
-       area = get_io_area(size);
-       if (!area)
-               return NULL;
-
-       virtaddr = (unsigned long)area->addr;
-       retaddr = virtaddr + offset;
-#ifdef DEBUG
-       printk("0x%lx,0x%lx,0x%lx", physaddr, virtaddr, retaddr);
-#endif
-
-       /*
-        * add cache and table flags to physical address
-        */
-       if (CPU_IS_040_OR_060) {
-               physaddr |= (_PAGE_PRESENT | _PAGE_GLOBAL040 |
-                            _PAGE_ACCESSED | _PAGE_DIRTY);
-               switch (cacheflag) {
-               case IOMAP_FULL_CACHING:
-                       physaddr |= _PAGE_CACHE040;
-                       break;
-               case IOMAP_NOCACHE_SER:
-               default:
-                       physaddr |= _PAGE_NOCACHE_S;
-                       break;
-               case IOMAP_NOCACHE_NONSER:
-                       physaddr |= _PAGE_NOCACHE;
-                       break;
-               case IOMAP_WRITETHROUGH:
-                       physaddr |= _PAGE_CACHE040W;
-                       break;
-               }
-       } else {
-               physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY);
-               switch (cacheflag) {
-               case IOMAP_NOCACHE_SER:
-               case IOMAP_NOCACHE_NONSER:
-               default:
-                       physaddr |= _PAGE_NOCACHE030;
-                       break;
-               case IOMAP_FULL_CACHING:
-               case IOMAP_WRITETHROUGH:
-                       break;
-               }
-       }
-
-       while ((long)size > 0) {
-#ifdef DEBUG
-               if (!(virtaddr & (PTRTREESIZE-1)))
-                       printk ("\npa=%#lx va=%#lx ", physaddr, virtaddr);
-#endif
-               pgd_dir = pgd_offset_k(virtaddr);
-               pmd_dir = pmd_alloc(&init_mm, pgd_dir, virtaddr);
-               if (!pmd_dir) {
-                       printk("ioremap: no mem for pmd_dir\n");
-                       return NULL;
-               }
-
-               if (CPU_IS_020_OR_030) {
-                       pmd_dir->pmd[(virtaddr/PTRTREESIZE) & 15] = physaddr;
-                       physaddr += PTRTREESIZE;
-                       virtaddr += PTRTREESIZE;
-                       size -= PTRTREESIZE;
-               } else {
-                       pte_dir = pte_alloc_kernel(pmd_dir, virtaddr);
-                       if (!pte_dir) {
-                               printk("ioremap: no mem for pte_dir\n");
-                               return NULL;
-                       }
-
-                       pte_val(*pte_dir) = physaddr;
-                       virtaddr += PAGE_SIZE;
-                       physaddr += PAGE_SIZE;
-                       size -= PAGE_SIZE;
-               }
-       }
-#ifdef DEBUG
-       printk("\n");
-#endif
-       flush_tlb_all();
-
-       return (void __iomem *)retaddr;
-}
-EXPORT_SYMBOL(__ioremap);
-
-/*
- * Unmap a ioremap()ed region again
- */
-void iounmap(void __iomem *addr)
-{
-#ifdef CONFIG_AMIGA
-       if ((!MACH_IS_AMIGA) ||
-           (((unsigned long)addr < 0x40000000) ||
-            ((unsigned long)addr > 0x60000000)))
-                       free_io_area((__force void *)addr);
-#else
-       free_io_area((__force void *)addr);
-#endif
-}
-EXPORT_SYMBOL(iounmap);
-
-/*
- * __iounmap unmaps nearly everything, so be careful
- * it doesn't free currently pointer/page tables anymore but it
- * wans't used anyway and might be added later.
- */
-void __iounmap(void *addr, unsigned long size)
-{
-       unsigned long virtaddr = (unsigned long)addr;
-       pgd_t *pgd_dir;
-       pmd_t *pmd_dir;
-       pte_t *pte_dir;
-
-       while ((long)size > 0) {
-               pgd_dir = pgd_offset_k(virtaddr);
-               if (pgd_bad(*pgd_dir)) {
-                       printk("iounmap: bad pgd(%08lx)\n", pgd_val(*pgd_dir));
-                       pgd_clear(pgd_dir);
-                       return;
-               }
-               pmd_dir = pmd_offset(pgd_dir, virtaddr);
-
-               if (CPU_IS_020_OR_030) {
-                       int pmd_off = (virtaddr/PTRTREESIZE) & 15;
-                       int pmd_type = pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK;
-
-                       if (pmd_type == _PAGE_PRESENT) {
-                               pmd_dir->pmd[pmd_off] = 0;
-                               virtaddr += PTRTREESIZE;
-                               size -= PTRTREESIZE;
-                               continue;
-                       } else if (pmd_type == 0)
-                               continue;
-               }
-
-               if (pmd_bad(*pmd_dir)) {
-                       printk("iounmap: bad pmd (%08lx)\n", pmd_val(*pmd_dir));
-                       pmd_clear(pmd_dir);
-                       return;
-               }
-               pte_dir = pte_offset_kernel(pmd_dir, virtaddr);
-
-               pte_val(*pte_dir) = 0;
-               virtaddr += PAGE_SIZE;
-               size -= PAGE_SIZE;
-       }
-
-       flush_tlb_all();
-}
-
-/*
- * Set new cache mode for some kernel address space.
- * The caller must push data for that range itself, if such data may already
- * be in the cache.
- */
-void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
-{
-       unsigned long virtaddr = (unsigned long)addr;
-       pgd_t *pgd_dir;
-       pmd_t *pmd_dir;
-       pte_t *pte_dir;
-
-       if (CPU_IS_040_OR_060) {
-               switch (cmode) {
-               case IOMAP_FULL_CACHING:
-                       cmode = _PAGE_CACHE040;
-                       break;
-               case IOMAP_NOCACHE_SER:
-               default:
-                       cmode = _PAGE_NOCACHE_S;
-                       break;
-               case IOMAP_NOCACHE_NONSER:
-                       cmode = _PAGE_NOCACHE;
-                       break;
-               case IOMAP_WRITETHROUGH:
-                       cmode = _PAGE_CACHE040W;
-                       break;
-               }
-       } else {
-               switch (cmode) {
-               case IOMAP_NOCACHE_SER:
-               case IOMAP_NOCACHE_NONSER:
-               default:
-                       cmode = _PAGE_NOCACHE030;
-                       break;
-               case IOMAP_FULL_CACHING:
-               case IOMAP_WRITETHROUGH:
-                       cmode = 0;
-               }
-       }
-
-       while ((long)size > 0) {
-               pgd_dir = pgd_offset_k(virtaddr);
-               if (pgd_bad(*pgd_dir)) {
-                       printk("iocachemode: bad pgd(%08lx)\n", pgd_val(*pgd_dir));
-                       pgd_clear(pgd_dir);
-                       return;
-               }
-               pmd_dir = pmd_offset(pgd_dir, virtaddr);
-
-               if (CPU_IS_020_OR_030) {
-                       int pmd_off = (virtaddr/PTRTREESIZE) & 15;
-
-                       if ((pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK) == _PAGE_PRESENT) {
-                               pmd_dir->pmd[pmd_off] = (pmd_dir->pmd[pmd_off] &
-                                                        _CACHEMASK040) | cmode;
-                               virtaddr += PTRTREESIZE;
-                               size -= PTRTREESIZE;
-                               continue;
-                       }
-               }
-
-               if (pmd_bad(*pmd_dir)) {
-                       printk("iocachemode: bad pmd (%08lx)\n", pmd_val(*pmd_dir));
-                       pmd_clear(pmd_dir);
-                       return;
-               }
-               pte_dir = pte_offset_kernel(pmd_dir, virtaddr);
-
-               pte_val(*pte_dir) = (pte_val(*pte_dir) & _CACHEMASK040) | cmode;
-               virtaddr += PAGE_SIZE;
-               size -= PAGE_SIZE;
-       }
-
-       flush_tlb_all();
-}
-EXPORT_SYMBOL(kernel_set_cachemode);
diff --git a/arch/m68k/mm/kmap_mm.c b/arch/m68k/mm/kmap_mm.c
new file mode 100644 (file)
index 0000000..6934584
--- /dev/null
@@ -0,0 +1,367 @@
+/*
+ *  linux/arch/m68k/mm/kmap.c
+ *
+ *  Copyright (C) 1997 Roman Hodek
+ *
+ *  10/01/99 cleaned up the code and changing to the same interface
+ *          used by other architectures                /Roman Zippel
+ */
+
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+
+#include <asm/setup.h>
+#include <asm/segment.h>
+#include <asm/page.h>
+#include <asm/pgalloc.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+#undef DEBUG
+
+#define PTRTREESIZE    (256*1024)
+
+/*
+ * For 040/060 we can use the virtual memory area like other architectures,
+ * but for 020/030 we want to use early termination page descriptor and we
+ * can't mix this with normal page descriptors, so we have to copy that code
+ * (mm/vmalloc.c) and return appriorate aligned addresses.
+ */
+
+#ifdef CPU_M68040_OR_M68060_ONLY
+
+#define IO_SIZE                PAGE_SIZE
+
+static inline struct vm_struct *get_io_area(unsigned long size)
+{
+       return get_vm_area(size, VM_IOREMAP);
+}
+
+
+static inline void free_io_area(void *addr)
+{
+       vfree((void *)(PAGE_MASK & (unsigned long)addr));
+}
+
+#else
+
+#define IO_SIZE                (256*1024)
+
+static struct vm_struct *iolist;
+
+static struct vm_struct *get_io_area(unsigned long size)
+{
+       unsigned long addr;
+       struct vm_struct **p, *tmp, *area;
+
+       area = kmalloc(sizeof(*area), GFP_KERNEL);
+       if (!area)
+               return NULL;
+       addr = KMAP_START;
+       for (p = &iolist; (tmp = *p) ; p = &tmp->next) {
+               if (size + addr < (unsigned long)tmp->addr)
+                       break;
+               if (addr > KMAP_END-size) {
+                       kfree(area);
+                       return NULL;
+               }
+               addr = tmp->size + (unsigned long)tmp->addr;
+       }
+       area->addr = (void *)addr;
+       area->size = size + IO_SIZE;
+       area->next = *p;
+       *p = area;
+       return area;
+}
+
+static inline void free_io_area(void *addr)
+{
+       struct vm_struct **p, *tmp;
+
+       if (!addr)
+               return;
+       addr = (void *)((unsigned long)addr & -IO_SIZE);
+       for (p = &iolist ; (tmp = *p) ; p = &tmp->next) {
+               if (tmp->addr == addr) {
+                       *p = tmp->next;
+                       __iounmap(tmp->addr, tmp->size);
+                       kfree(tmp);
+                       return;
+               }
+       }
+}
+
+#endif
+
+/*
+ * Map some physical address range into the kernel address space.
+ */
+/* Rewritten by Andreas Schwab to remove all races. */
+
+void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
+{
+       struct vm_struct *area;
+       unsigned long virtaddr, retaddr;
+       long offset;
+       pgd_t *pgd_dir;
+       pmd_t *pmd_dir;
+       pte_t *pte_dir;
+
+       /*
+        * Don't allow mappings that wrap..
+        */
+       if (!size || physaddr > (unsigned long)(-size))
+               return NULL;
+
+#ifdef CONFIG_AMIGA
+       if (MACH_IS_AMIGA) {
+               if ((physaddr >= 0x40000000) && (physaddr + size < 0x60000000)
+                   && (cacheflag == IOMAP_NOCACHE_SER))
+                       return (void __iomem *)physaddr;
+       }
+#endif
+
+#ifdef DEBUG
+       printk("ioremap: 0x%lx,0x%lx(%d) - ", physaddr, size, cacheflag);
+#endif
+       /*
+        * Mappings have to be aligned
+        */
+       offset = physaddr & (IO_SIZE - 1);
+       physaddr &= -IO_SIZE;
+       size = (size + offset + IO_SIZE - 1) & -IO_SIZE;
+
+       /*
+        * Ok, go for it..
+        */
+       area = get_io_area(size);
+       if (!area)
+               return NULL;
+
+       virtaddr = (unsigned long)area->addr;
+       retaddr = virtaddr + offset;
+#ifdef DEBUG
+       printk("0x%lx,0x%lx,0x%lx", physaddr, virtaddr, retaddr);
+#endif
+
+       /*
+        * add cache and table flags to physical address
+        */
+       if (CPU_IS_040_OR_060) {
+               physaddr |= (_PAGE_PRESENT | _PAGE_GLOBAL040 |
+                            _PAGE_ACCESSED | _PAGE_DIRTY);
+               switch (cacheflag) {
+               case IOMAP_FULL_CACHING:
+                       physaddr |= _PAGE_CACHE040;
+                       break;
+               case IOMAP_NOCACHE_SER:
+               default:
+                       physaddr |= _PAGE_NOCACHE_S;
+                       break;
+               case IOMAP_NOCACHE_NONSER:
+                       physaddr |= _PAGE_NOCACHE;
+                       break;
+               case IOMAP_WRITETHROUGH:
+                       physaddr |= _PAGE_CACHE040W;
+                       break;
+               }
+       } else {
+               physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY);
+               switch (cacheflag) {
+               case IOMAP_NOCACHE_SER:
+               case IOMAP_NOCACHE_NONSER:
+               default:
+                       physaddr |= _PAGE_NOCACHE030;
+                       break;
+               case IOMAP_FULL_CACHING:
+               case IOMAP_WRITETHROUGH:
+                       break;
+               }
+       }
+
+       while ((long)size > 0) {
+#ifdef DEBUG
+               if (!(virtaddr & (PTRTREESIZE-1)))
+                       printk ("\npa=%#lx va=%#lx ", physaddr, virtaddr);
+#endif
+               pgd_dir = pgd_offset_k(virtaddr);
+               pmd_dir = pmd_alloc(&init_mm, pgd_dir, virtaddr);
+               if (!pmd_dir) {
+                       printk("ioremap: no mem for pmd_dir\n");
+                       return NULL;
+               }
+
+               if (CPU_IS_020_OR_030) {
+                       pmd_dir->pmd[(virtaddr/PTRTREESIZE) & 15] = physaddr;
+                       physaddr += PTRTREESIZE;
+                       virtaddr += PTRTREESIZE;
+                       size -= PTRTREESIZE;
+               } else {
+                       pte_dir = pte_alloc_kernel(pmd_dir, virtaddr);
+                       if (!pte_dir) {
+                               printk("ioremap: no mem for pte_dir\n");
+                               return NULL;
+                       }
+
+                       pte_val(*pte_dir) = physaddr;
+                       virtaddr += PAGE_SIZE;
+                       physaddr += PAGE_SIZE;
+                       size -= PAGE_SIZE;
+               }
+       }
+#ifdef DEBUG
+       printk("\n");
+#endif
+       flush_tlb_all();
+
+       return (void __iomem *)retaddr;
+}
+EXPORT_SYMBOL(__ioremap);
+
+/*
+ * Unmap a ioremap()ed region again
+ */
+void iounmap(void __iomem *addr)
+{
+#ifdef CONFIG_AMIGA
+       if ((!MACH_IS_AMIGA) ||
+           (((unsigned long)addr < 0x40000000) ||
+            ((unsigned long)addr > 0x60000000)))
+                       free_io_area((__force void *)addr);
+#else
+       free_io_area((__force void *)addr);
+#endif
+}
+EXPORT_SYMBOL(iounmap);
+
+/*
+ * __iounmap unmaps nearly everything, so be careful
+ * it doesn't free currently pointer/page tables anymore but it
+ * wans't used anyway and might be added later.
+ */
+void __iounmap(void *addr, unsigned long size)
+{
+       unsigned long virtaddr = (unsigned long)addr;
+       pgd_t *pgd_dir;
+       pmd_t *pmd_dir;
+       pte_t *pte_dir;
+
+       while ((long)size > 0) {
+               pgd_dir = pgd_offset_k(virtaddr);
+               if (pgd_bad(*pgd_dir)) {
+                       printk("iounmap: bad pgd(%08lx)\n", pgd_val(*pgd_dir));
+                       pgd_clear(pgd_dir);
+                       return;
+               }
+               pmd_dir = pmd_offset(pgd_dir, virtaddr);
+
+               if (CPU_IS_020_OR_030) {
+                       int pmd_off = (virtaddr/PTRTREESIZE) & 15;
+                       int pmd_type = pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK;
+
+                       if (pmd_type == _PAGE_PRESENT) {
+                               pmd_dir->pmd[pmd_off] = 0;
+                               virtaddr += PTRTREESIZE;
+                               size -= PTRTREESIZE;
+                               continue;
+                       } else if (pmd_type == 0)
+                               continue;
+               }
+
+               if (pmd_bad(*pmd_dir)) {
+                       printk("iounmap: bad pmd (%08lx)\n", pmd_val(*pmd_dir));
+                       pmd_clear(pmd_dir);
+                       return;
+               }
+               pte_dir = pte_offset_kernel(pmd_dir, virtaddr);
+
+               pte_val(*pte_dir) = 0;
+               virtaddr += PAGE_SIZE;
+               size -= PAGE_SIZE;
+       }
+
+       flush_tlb_all();
+}
+
+/*
+ * Set new cache mode for some kernel address space.
+ * The caller must push data for that range itself, if such data may already
+ * be in the cache.
+ */
+void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
+{
+       unsigned long virtaddr = (unsigned long)addr;
+       pgd_t *pgd_dir;
+       pmd_t *pmd_dir;
+       pte_t *pte_dir;
+
+       if (CPU_IS_040_OR_060) {
+               switch (cmode) {
+               case IOMAP_FULL_CACHING:
+                       cmode = _PAGE_CACHE040;
+                       break;
+               case IOMAP_NOCACHE_SER:
+               default:
+                       cmode = _PAGE_NOCACHE_S;
+                       break;
+               case IOMAP_NOCACHE_NONSER:
+                       cmode = _PAGE_NOCACHE;
+                       break;
+               case IOMAP_WRITETHROUGH:
+                       cmode = _PAGE_CACHE040W;
+                       break;
+               }
+       } else {
+               switch (cmode) {
+               case IOMAP_NOCACHE_SER:
+               case IOMAP_NOCACHE_NONSER:
+               default:
+                       cmode = _PAGE_NOCACHE030;
+                       break;
+               case IOMAP_FULL_CACHING:
+               case IOMAP_WRITETHROUGH:
+                       cmode = 0;
+               }
+       }
+
+       while ((long)size > 0) {
+               pgd_dir = pgd_offset_k(virtaddr);
+               if (pgd_bad(*pgd_dir)) {
+                       printk("iocachemode: bad pgd(%08lx)\n", pgd_val(*pgd_dir));
+                       pgd_clear(pgd_dir);
+                       return;
+               }
+               pmd_dir = pmd_offset(pgd_dir, virtaddr);
+
+               if (CPU_IS_020_OR_030) {
+                       int pmd_off = (virtaddr/PTRTREESIZE) & 15;
+
+                       if ((pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK) == _PAGE_PRESENT) {
+                               pmd_dir->pmd[pmd_off] = (pmd_dir->pmd[pmd_off] &
+                                                        _CACHEMASK040) | cmode;
+                               virtaddr += PTRTREESIZE;
+                               size -= PTRTREESIZE;
+                               continue;
+                       }
+               }
+
+               if (pmd_bad(*pmd_dir)) {
+                       printk("iocachemode: bad pmd (%08lx)\n", pmd_val(*pmd_dir));
+                       pmd_clear(pmd_dir);
+                       return;
+               }
+               pte_dir = pte_offset_kernel(pmd_dir, virtaddr);
+
+               pte_val(*pte_dir) = (pte_val(*pte_dir) & _CACHEMASK040) | cmode;
+               virtaddr += PAGE_SIZE;
+               size -= PAGE_SIZE;
+       }
+
+       flush_tlb_all();
+}
+EXPORT_SYMBOL(kernel_set_cachemode);
diff --git a/arch/m68knommu/Kconfig.debug b/arch/m68knommu/Kconfig.debug
deleted file mode 100644 (file)
index ed6d9a8..0000000
+++ /dev/null
@@ -1,35 +0,0 @@
-menu "Kernel hacking"
-
-source "lib/Kconfig.debug"
-
-config FULLDEBUG
-       bool "Full Symbolic/Source Debugging support"
-       help
-         Enable debugging symbols on kernel build.
-
-config HIGHPROFILE
-       bool "Use fast second timer for profiling"
-       depends on COLDFIRE
-       help
-         Use a fast secondary clock to produce profiling information.
-
-config BOOTPARAM
-       bool 'Compiled-in Kernel Boot Parameter'
-
-config BOOTPARAM_STRING
-       string 'Kernel Boot Parameter'
-       default 'console=ttyS0,19200'
-       depends on BOOTPARAM
-
-config NO_KERNEL_MSG
-       bool "Suppress Kernel BUG Messages"
-       help
-         Do not output any debug BUG messages within the kernel.
-
-config BDM_DISABLE
-       bool "Disable BDM signals"
-       depends on (EXPERIMENTAL && COLDFIRE)
-       help
-         Disable the ColdFire CPU's BDM signals.
-
-endmenu
diff --git a/arch/m68knommu/defconfig b/arch/m68knommu/defconfig
deleted file mode 100644 (file)
index 2f5655c..0000000
+++ /dev/null
@@ -1,74 +0,0 @@
-CONFIG_EXPERIMENTAL=y
-CONFIG_LOG_BUF_SHIFT=14
-# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
-CONFIG_EXPERT=y
-# CONFIG_KALLSYMS is not set
-# CONFIG_HOTPLUG is not set
-# CONFIG_FUTEX is not set
-# CONFIG_EPOLL is not set
-# CONFIG_SIGNALFD is not set
-# CONFIG_TIMERFD is not set
-# CONFIG_EVENTFD is not set
-# CONFIG_AIO is not set
-# CONFIG_VM_EVENT_COUNTERS is not set
-# CONFIG_COMPAT_BRK is not set
-# CONFIG_BLK_DEV_BSG is not set
-# CONFIG_IOSCHED_DEADLINE is not set
-# CONFIG_IOSCHED_CFQ is not set
-CONFIG_M520x=y
-CONFIG_CLOCK_SET=y
-CONFIG_CLOCK_FREQ=166666666
-CONFIG_CLOCK_DIV=2
-CONFIG_M5208EVB=y
-# CONFIG_4KSTACKS is not set
-CONFIG_RAMBASE=0x40000000
-CONFIG_RAMSIZE=0x2000000
-CONFIG_VECTORBASE=0x40000000
-CONFIG_KERNELBASE=0x40020000
-CONFIG_RAM16BIT=y
-CONFIG_BINFMT_FLAT=y
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_INET=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
-# CONFIG_INET_LRO is not set
-# CONFIG_INET_DIAG is not set
-# CONFIG_IPV6 is not set
-CONFIG_MTD=y
-CONFIG_MTD_PARTITIONS=y
-CONFIG_MTD_CHAR=y
-CONFIG_MTD_BLOCK=y
-CONFIG_MTD_RAM=y
-CONFIG_MTD_UCLINUX=y
-CONFIG_BLK_DEV_RAM=y
-# CONFIG_MISC_DEVICES is not set
-CONFIG_NETDEVICES=y
-CONFIG_NET_ETHERNET=y
-CONFIG_FEC=y
-# CONFIG_NETDEV_1000 is not set
-# CONFIG_NETDEV_10000 is not set
-# CONFIG_INPUT is not set
-# CONFIG_SERIO is not set
-# CONFIG_VT is not set
-CONFIG_SERIAL_MCF=y
-CONFIG_SERIAL_MCF_BAUDRATE=115200
-CONFIG_SERIAL_MCF_CONSOLE=y
-# CONFIG_UNIX98_PTYS is not set
-# CONFIG_HW_RANDOM is not set
-# CONFIG_HWMON is not set
-# CONFIG_USB_SUPPORT is not set
-CONFIG_EXT2_FS=y
-# CONFIG_FILE_LOCKING is not set
-# CONFIG_DNOTIFY is not set
-# CONFIG_SYSFS is not set
-CONFIG_ROMFS_FS=y
-CONFIG_ROMFS_BACKED_BY_MTD=y
-# CONFIG_NETWORK_FILESYSTEMS is not set
-# CONFIG_RCU_CPU_STALL_DETECTOR is not set
-CONFIG_SYSCTL_SYSCALL_CHECK=y
-CONFIG_FULLDEBUG=y
-CONFIG_BOOTPARAM=y
-CONFIG_BOOTPARAM_STRING="root=/dev/mtdblock0"
diff --git a/arch/m68knommu/kernel/.gitignore b/arch/m68knommu/kernel/.gitignore
deleted file mode 100644 (file)
index c5f676c..0000000
+++ /dev/null
@@ -1 +0,0 @@
-vmlinux.lds
diff --git a/arch/m68knommu/lib/ashldi3.c b/arch/m68knommu/lib/ashldi3.c
deleted file mode 100644 (file)
index 008403e..0000000
+++ /dev/null
@@ -1,62 +0,0 @@
-/* ashrdi3.c extracted from gcc-2.95.2/libgcc2.c which is: */
-/* Copyright (C) 1989, 92-98, 1999 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
-
-#define BITS_PER_UNIT 8
-
-typedef         int SItype     __attribute__ ((mode (SI)));
-typedef unsigned int USItype   __attribute__ ((mode (SI)));
-typedef                 int DItype     __attribute__ ((mode (DI)));
-typedef int word_type __attribute__ ((mode (__word__)));
-
-struct DIstruct {SItype high, low;};
-
-typedef union
-{
-  struct DIstruct s;
-  DItype ll;
-} DIunion;
-
-DItype
-__ashldi3 (DItype u, word_type b)
-{
-  DIunion w;
-  word_type bm;
-  DIunion uu;
-
-  if (b == 0)
-    return u;
-
-  uu.ll = u;
-
-  bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
-  if (bm <= 0)
-    {
-      w.s.low = 0;
-      w.s.high = (USItype)uu.s.low << -bm;
-    }
-  else
-    {
-      USItype carries = (USItype)uu.s.low >> bm;
-      w.s.low = (USItype)uu.s.low << b;
-      w.s.high = ((USItype)uu.s.high << b) | carries;
-    }
-
-  return w.ll;
-}
diff --git a/arch/m68knommu/lib/lshrdi3.c b/arch/m68knommu/lib/lshrdi3.c
deleted file mode 100644 (file)
index 93b1cb6..0000000
+++ /dev/null
@@ -1,62 +0,0 @@
-/* lshrdi3.c extracted from gcc-2.7.2/libgcc2.c which is: */
-/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
-
-#define BITS_PER_UNIT 8
-
-typedef         int SItype     __attribute__ ((mode (SI)));
-typedef unsigned int USItype   __attribute__ ((mode (SI)));
-typedef                 int DItype     __attribute__ ((mode (DI)));
-typedef int word_type __attribute__ ((mode (__word__)));
-
-struct DIstruct {SItype high, low;};
-
-typedef union
-{
-  struct DIstruct s;
-  DItype ll;
-} DIunion;
-
-DItype
-__lshrdi3 (DItype u, word_type b)
-{
-  DIunion w;
-  word_type bm;
-  DIunion uu;
-
-  if (b == 0)
-    return u;
-
-  uu.ll = u;
-
-  bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
-  if (bm <= 0)
-    {
-      w.s.high = 0;
-      w.s.low = (USItype)uu.s.high >> -bm;
-    }
-  else
-    {
-      USItype carries = (USItype)uu.s.high << bm;
-      w.s.high = (USItype)uu.s.high >> b;
-      w.s.low = ((USItype)uu.s.low >> b) | carries;
-    }
-
-  return w.ll;
-}