That code is a relict from the early days of UML.
ppc support was never completed nor worked.
Let's rip it out.
Signed-off-by: Richard Weinberger <richard@nod.at>
+++ /dev/null
-ifeq ($(CONFIG_HOST_2G_2G), y)
-START_ADDR = 0x80000000
-else
-START_ADDR = 0xc0000000
-endif
-ARCH_CFLAGS = -U__powerpc__ -D__UM_PPC__
-
-# The arch is ppc, but the elf32 name is powerpc
-ELF_SUBARCH = powerpc
+++ /dev/null
-OBJ = built-in.o
-
-.S.o:
- $(CC) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
-
-OBJS = ptrace.o sigcontext.o checksum.o miscthings.o misc.o \
- ptrace_user.o sysrq.o
-
-asflags-y := -DCONFIG_PPC32 -I. -I$(srctree)/arch/ppc/kernel
-
-all: $(OBJ)
-
-$(OBJ): $(OBJS)
- rm -f $@
- $(LD) $(LINKFLAGS) --start-group $^ --end-group -o $@
-
-ptrace_user.o: ptrace_user.c
- $(CC) -D__KERNEL__ $(USER_CFLAGS) $(ccflags-y) -c -o $@ $<
-
-sigcontext.o: sigcontext.c
- $(CC) $(USER_CFLAGS) $(ccflags-y) -c -o $@ $<
-
-checksum.S:
- rm -f $@
- ln -s $(srctree)/arch/ppc/lib/$@ $@
-
-mk_defs.c:
- rm -f $@
- ln -s $(srctree)/arch/ppc/kernel/$@ $@
-
-ppc_defs.head:
- rm -f $@
- ln -s $(srctree)/arch/ppc/kernel/$@ $@
-
-ppc_defs.h: mk_defs.c ppc_defs.head \
- $(srctree)/include/asm-ppc/mmu.h \
- $(srctree)/include/asm-ppc/processor.h \
- $(srctree)/include/asm-ppc/pgtable.h \
- $(srctree)/include/asm-ppc/ptrace.h
-# $(CC) $(CFLAGS) -S mk_defs.c
- cp ppc_defs.head ppc_defs.h
-# for bk, this way we can write to the file even if it's not checked out
- echo '#define THREAD 608' >> ppc_defs.h
- echo '#define PT_REGS 8' >> ppc_defs.h
- echo '#define CLONE_VM 256' >> ppc_defs.h
-# chmod u+w ppc_defs.h
-# grep '^#define' mk_defs.s >> ppc_defs.h
-# rm mk_defs.s
-
-# the asm link is horrible, and breaks the other targets. This is also
-# not going to work with parallel makes.
-
-checksum.o: checksum.S
- rm -f asm
- ln -s $(srctree)/include/asm-ppc asm
- $(CC) $(asflags-y) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
- rm -f asm
-
-misc.o: misc.S ppc_defs.h
- rm -f asm
- ln -s $(srctree)/include/asm-ppc asm
- $(CC) $(asflags-y) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
- rm -f asm
-
-clean-files := $(OBJS) ppc_defs.h checksum.S mk_defs.c
+++ /dev/null
-#ifndef __UM_ARCHPARAM_PPC_H
-#define __UM_ARCHPARAM_PPC_H
-
-/********* Bits for asm-um/string.h **********/
-
-#define __HAVE_ARCH_STRRCHR
-
-#endif
+++ /dev/null
-#ifndef __UM_ELF_PPC_H
-#define __UM_ELF_PPC_H
-
-
-extern long elf_aux_hwcap;
-#define ELF_HWCAP (elf_aux_hwcap)
-
-#define SET_PERSONALITY(ex) do ; while(0)
-
-#define ELF_EXEC_PAGESIZE 4096
-
-#define elf_check_arch(x) (1)
-
-#ifdef CONFIG_64BIT
-#define ELF_CLASS ELFCLASS64
-#else
-#define ELF_CLASS ELFCLASS32
-#endif
-
-#define R_386_NONE 0
-#define R_386_32 1
-#define R_386_PC32 2
-#define R_386_GOT32 3
-#define R_386_PLT32 4
-#define R_386_COPY 5
-#define R_386_GLOB_DAT 6
-#define R_386_JMP_SLOT 7
-#define R_386_RELATIVE 8
-#define R_386_GOTOFF 9
-#define R_386_GOTPC 10
-#define R_386_NUM 11
-
-#define ELF_PLATFORM (0)
-
-#define ELF_ET_DYN_BASE (0x08000000)
-
-/* the following stolen from asm-ppc/elf.h */
-#define ELF_NGREG 48 /* includes nip, msr, lr, etc. */
-#define ELF_NFPREG 33 /* includes fpscr */
-/* General registers */
-typedef unsigned long elf_greg_t;
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-/* Floating point registers */
-typedef double elf_fpreg_t;
-typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
-
-#define ELF_DATA ELFDATA2MSB
-#define ELF_ARCH EM_PPC
-
-#endif
+++ /dev/null
-#ifndef __UM_PROCESSOR_PPC_H
-#define __UM_PROCESSOR_PPC_H
-
-#if defined(__ASSEMBLY__)
-
-#define CONFIG_PPC_MULTIPLATFORM
-#include "arch/processor.h"
-
-#else
-
-#include "asm/processor-generic.h"
-
-#endif
-
-#endif
+++ /dev/null
-/*
- * This file contains miscellaneous low-level functions.
- * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
- * and Paul Mackerras.
- *
- * A couple of functions stolen from arch/ppc/kernel/misc.S for UML
- * by Chris Emerson.
- *
- * 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.
- *
- */
-
-#include <asm/processor.h>
-#include "ppc_asm.h"
-
-#if defined(CONFIG_4xx) || defined(CONFIG_8xx)
-#define CACHE_LINE_SIZE 16
-#define LG_CACHE_LINE_SIZE 4
-#define MAX_COPY_PREFETCH 1
-#else
-#define CACHE_LINE_SIZE 32
-#define LG_CACHE_LINE_SIZE 5
-#define MAX_COPY_PREFETCH 4
-#endif /* CONFIG_4xx || CONFIG_8xx */
-
- .text
-
-/*
- * Clear a page using the dcbz instruction, which doesn't cause any
- * memory traffic (except to write out any cache lines which get
- * displaced). This only works on cacheable memory.
- */
-_GLOBAL(clear_page)
- li r0,4096/CACHE_LINE_SIZE
- mtctr r0
-#ifdef CONFIG_8xx
- li r4, 0
-1: stw r4, 0(r3)
- stw r4, 4(r3)
- stw r4, 8(r3)
- stw r4, 12(r3)
-#else
-1: dcbz 0,r3
-#endif
- addi r3,r3,CACHE_LINE_SIZE
- bdnz 1b
- blr
-
-/*
- * Copy a whole page. We use the dcbz instruction on the destination
- * to reduce memory traffic (it eliminates the unnecessary reads of
- * the destination into cache). This requires that the destination
- * is cacheable.
- */
-#define COPY_16_BYTES \
- lwz r6,4(r4); \
- lwz r7,8(r4); \
- lwz r8,12(r4); \
- lwzu r9,16(r4); \
- stw r6,4(r3); \
- stw r7,8(r3); \
- stw r8,12(r3); \
- stwu r9,16(r3)
-
-_GLOBAL(copy_page)
- addi r3,r3,-4
- addi r4,r4,-4
- li r5,4
-
-#ifndef CONFIG_8xx
-#if MAX_COPY_PREFETCH > 1
- li r0,MAX_COPY_PREFETCH
- li r11,4
- mtctr r0
-11: dcbt r11,r4
- addi r11,r11,CACHE_LINE_SIZE
- bdnz 11b
-#else /* MAX_COPY_PREFETCH == 1 */
- dcbt r5,r4
- li r11,CACHE_LINE_SIZE+4
-#endif /* MAX_COPY_PREFETCH */
-#endif /* CONFIG_8xx */
-
- li r0,4096/CACHE_LINE_SIZE
- mtctr r0
-1:
-#ifndef CONFIG_8xx
- dcbt r11,r4
- dcbz r5,r3
-#endif
- COPY_16_BYTES
-#if CACHE_LINE_SIZE >= 32
- COPY_16_BYTES
-#if CACHE_LINE_SIZE >= 64
- COPY_16_BYTES
- COPY_16_BYTES
-#if CACHE_LINE_SIZE >= 128
- COPY_16_BYTES
- COPY_16_BYTES
- COPY_16_BYTES
- COPY_16_BYTES
-#endif
-#endif
-#endif
- bdnz 1b
- blr
+++ /dev/null
-#include <linux/threads.h>
-#include <linux/stddef.h> // for NULL
-#include <linux/elf.h> // for AT_NULL
-
-/* The following function nicked from arch/ppc/kernel/process.c and
- * adapted slightly */
-/*
- * XXX ld.so expects the auxiliary table to start on
- * a 16-byte boundary, so we have to find it and
- * move it up. :-(
- */
-void shove_aux_table(unsigned long sp)
-{
- int argc;
- char *p;
- unsigned long e;
- unsigned long aux_start, offset;
-
- argc = *(int *)sp;
- sp += sizeof(int) + (argc + 1) * sizeof(char *);
- /* skip over the environment pointers */
- do {
- p = *(char **)sp;
- sp += sizeof(char *);
- } while (p != NULL);
- aux_start = sp;
- /* skip to the end of the auxiliary table */
- do {
- e = *(unsigned long *)sp;
- sp += 2 * sizeof(unsigned long);
- } while (e != AT_NULL);
- offset = ((aux_start + 15) & ~15) - aux_start;
- if (offset != 0) {
- do {
- sp -= sizeof(unsigned long);
- e = *(unsigned long *)sp;
- *(unsigned long *)(sp + offset) = e;
- } while (sp > aux_start);
- }
-}
-/* END stuff taken from arch/ppc/kernel/process.c */
-
+++ /dev/null
-#include <linux/sched.h>
-#include "asm/ptrace.h"
-
-int putreg(struct task_struct *child, unsigned long regno,
- unsigned long value)
-{
- child->thread.process_regs.regs[regno >> 2] = value;
- return 0;
-}
-
-int poke_user(struct task_struct *child, long addr, long data)
-{
- if ((addr & 3) || addr < 0)
- return -EIO;
-
- if (addr < MAX_REG_OFFSET)
- return putreg(child, addr, data);
-
- else if((addr >= offsetof(struct user, u_debugreg[0])) &&
- (addr <= offsetof(struct user, u_debugreg[7]))){
- addr -= offsetof(struct user, u_debugreg[0]);
- addr = addr >> 2;
- if((addr == 4) || (addr == 5)) return -EIO;
- child->thread.arch.debugregs[addr] = data;
- return 0;
- }
- return -EIO;
-}
-
-unsigned long getreg(struct task_struct *child, unsigned long regno)
-{
- unsigned long retval = ~0UL;
-
- retval &= child->thread.process_regs.regs[regno >> 2];
- return retval;
-}
-
-int peek_user(struct task_struct *child, long addr, long data)
-{
- /* read the word at location addr in the USER area. */
- unsigned long tmp;
-
- if ((addr & 3) || addr < 0)
- return -EIO;
-
- tmp = 0; /* Default return condition */
- if(addr < MAX_REG_OFFSET){
- tmp = getreg(child, addr);
- }
- else if((addr >= offsetof(struct user, u_debugreg[0])) &&
- (addr <= offsetof(struct user, u_debugreg[7]))){
- addr -= offsetof(struct user, u_debugreg[0]);
- addr = addr >> 2;
- tmp = child->thread.arch.debugregs[addr];
- }
- return put_user(tmp, (unsigned long *) data);
-}
-
+++ /dev/null
-#include <errno.h>
-#include <asm/ptrace.h>
-#include <sysdep/ptrace.h>
-
-int ptrace_getregs(long pid, unsigned long *regs_out)
-{
- int i;
- for (i=0; i < sizeof(struct sys_pt_regs)/sizeof(PPC_REG); ++i) {
- errno = 0;
- regs_out->regs[i] = ptrace(PTRACE_PEEKUSR, pid, i*4, 0);
- if (errno) {
- return -errno;
- }
- }
- return 0;
-}
-
-int ptrace_setregs(long pid, unsigned long *regs_in)
-{
- int i;
- for (i=0; i < sizeof(struct sys_pt_regs)/sizeof(PPC_REG); ++i) {
- if (i != 34 /* FIXME: PT_ORIG_R3 */ && i <= PT_MQ) {
- if (ptrace(PTRACE_POKEUSR, pid, i*4, regs_in->regs[i]) < 0) {
- return -errno;
- }
- }
- }
- return 0;
-}
+++ /dev/null
-/*
- * Licensed under the GPL
- */
-
-#ifndef __SYS_PTRACE_PPC_H
-#define __SYS_PTRACE_PPC_H
-
-#include <linux/types.h>
-
-/* the following taken from <asm-ppc/ptrace.h> */
-
-#ifdef CONFIG_PPC64
-#define PPC_REG unsigned long /*long*/
-#else
-#define PPC_REG unsigned long
-#endif
-struct sys_pt_regs_s {
- PPC_REG gpr[32];
- PPC_REG nip;
- PPC_REG msr;
- PPC_REG orig_gpr3; /* Used for restarting system calls */
- PPC_REG ctr;
- PPC_REG link;
- PPC_REG xer;
- PPC_REG ccr;
- PPC_REG mq; /* 601 only (not used at present) */
- /* Used on APUS to hold IPL value. */
- PPC_REG trap; /* Reason for being here */
- PPC_REG dar; /* Fault registers */
- PPC_REG dsisr;
- PPC_REG result; /* Result of a system call */
-};
-
-#define NUM_REGS (sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG))
-
-struct sys_pt_regs {
- PPC_REG regs[sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG)];
-};
-
-#define UM_MAX_REG (PT_FPR0)
-#define UM_MAX_REG_OFFSET (UM_MAX_REG * sizeof(PPC_REG))
-
-#define EMPTY_REGS { { [ 0 ... NUM_REGS - 1] = 0 } }
-
-#define UM_REG(r, n) ((r)->regs[n])
-
-#define UM_SYSCALL_RET(r) UM_REG(r, PT_R3)
-#define UM_SP(r) UM_REG(r, PT_R1)
-#define UM_IP(r) UM_REG(r, PT_NIP)
-#define UM_ELF_ZERO(r) UM_REG(r, PT_FPSCR)
-#define UM_SYSCALL_NR(r) UM_REG(r, PT_R0)
-#define UM_SYSCALL_ARG1(r) UM_REG(r, PT_ORIG_R3)
-#define UM_SYSCALL_ARG2(r) UM_REG(r, PT_R4)
-#define UM_SYSCALL_ARG3(r) UM_REG(r, PT_R5)
-#define UM_SYSCALL_ARG4(r) UM_REG(r, PT_R6)
-#define UM_SYSCALL_ARG5(r) UM_REG(r, PT_R7)
-#define UM_SYSCALL_ARG6(r) UM_REG(r, PT_R8)
-
-#define UM_SYSCALL_NR_OFFSET (PT_R0 * sizeof(PPC_REG))
-#define UM_SYSCALL_RET_OFFSET (PT_R3 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG1_OFFSET (PT_R3 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG2_OFFSET (PT_R4 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG3_OFFSET (PT_R5 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG4_OFFSET (PT_R6 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG5_OFFSET (PT_R7 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG6_OFFSET (PT_R8 * sizeof(PPC_REG))
-#define UM_SP_OFFSET (PT_R1 * sizeof(PPC_REG))
-#define UM_IP_OFFSET (PT_NIP * sizeof(PPC_REG))
-#define UM_ELF_ZERO_OFFSET (PT_R3 * sizeof(PPC_REG))
-
-#define UM_SET_SYSCALL_RETURN(_regs, result) \
-do { \
- if (result < 0) { \
- (_regs)->regs[PT_CCR] |= 0x10000000; \
- UM_SYSCALL_RET((_regs)) = -result; \
- } else { \
- UM_SYSCALL_RET((_regs)) = result; \
- } \
-} while(0)
-
-extern void shove_aux_table(unsigned long sp);
-#define UM_FIX_EXEC_STACK(sp) shove_aux_table(sp);
-
-/* These aren't actually defined. The undefs are just to make sure
- * everyone's clear on the concept.
- */
-#undef UML_HAVE_GETREGS
-#undef UML_HAVE_GETFPREGS
-#undef UML_HAVE_SETREGS
-#undef UML_HAVE_SETFPREGS
-
-#endif
-
+++ /dev/null
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SYS_SIGCONTEXT_PPC_H
-#define __SYS_SIGCONTEXT_PPC_H
-
-#define DSISR_WRITE 0x02000000
-
-#define SC_FAULT_ADDR(sc) ({ \
- struct sigcontext *_sc = (sc); \
- long retval = -1; \
- switch (_sc->regs->trap) { \
- case 0x300: \
- /* data exception */ \
- retval = _sc->regs->dar; \
- break; \
- case 0x400: \
- /* instruction exception */ \
- retval = _sc->regs->nip; \
- break; \
- default: \
- panic("SC_FAULT_ADDR: unhandled trap type\n"); \
- } \
- retval; \
- })
-
-#define SC_FAULT_WRITE(sc) ({ \
- struct sigcontext *_sc = (sc); \
- long retval = -1; \
- switch (_sc->regs->trap) { \
- case 0x300: \
- /* data exception */ \
- retval = !!(_sc->regs->dsisr & DSISR_WRITE); \
- break; \
- case 0x400: \
- /* instruction exception: not a write */ \
- retval = 0; \
- break; \
- default: \
- panic("SC_FAULT_ADDR: unhandled trap type\n"); \
- } \
- retval; \
- })
-
-#define SC_IP(sc) ((sc)->regs->nip)
-#define SC_SP(sc) ((sc)->regs->gpr[1])
-#define SEGV_IS_FIXABLE(sc) (1)
-
-#endif
-
+++ /dev/null
-/*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SYSDEP_PPC_SKAS_PTRACE_H
-#define __SYSDEP_PPC_SKAS_PTRACE_H
-
-struct ptrace_faultinfo {
- int is_write;
- unsigned long addr;
-};
-
-struct ptrace_ldt {
- int func;
- void *ptr;
- unsigned long bytecount;
-};
-
-#define PTRACE_LDT 54
-
-#endif
+++ /dev/null
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-typedef long syscall_handler_t(unsigned long arg1, unsigned long arg2,
- unsigned long arg3, unsigned long arg4,
- unsigned long arg5, unsigned long arg6);
-
-#define EXECUTE_SYSCALL(syscall, regs) \
- (*sys_call_table[syscall])(UM_SYSCALL_ARG1(®s), \
- UM_SYSCALL_ARG2(®s), \
- UM_SYSCALL_ARG3(®s), \
- UM_SYSCALL_ARG4(®s), \
- UM_SYSCALL_ARG5(®s), \
- UM_SYSCALL_ARG6(®s))
-
-extern syscall_handler_t sys_mincore;
-extern syscall_handler_t sys_madvise;
-
-/* old_mmap needs the correct prototype since syscall_kern.c includes
- * this file.
- */
-int old_mmap(unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long offset);
-
-#define ARCH_SYSCALLS \
- [ __NR_modify_ldt ] = sys_ni_syscall, \
- [ __NR_pciconfig_read ] = sys_ni_syscall, \
- [ __NR_pciconfig_write ] = sys_ni_syscall, \
- [ __NR_pciconfig_iobase ] = sys_ni_syscall, \
- [ __NR_pivot_root ] = sys_ni_syscall, \
- [ __NR_multiplexer ] = sys_ni_syscall, \
- [ __NR_mmap ] = old_mmap, \
- [ __NR_madvise ] = sys_madvise, \
- [ __NR_mincore ] = sys_mincore, \
- [ __NR_iopl ] = (syscall_handler_t *) sys_ni_syscall, \
- [ __NR_utimes ] = (syscall_handler_t *) sys_utimes, \
- [ __NR_fadvise64 ] = (syscall_handler_t *) sys_fadvise64,
-
-#define LAST_ARCH_SYSCALL __NR_fadvise64
-
+++ /dev/null
-#include "asm/ptrace.h"
-#include "asm/sigcontext.h"
-#include <sysdep/ptrace.h>
-
+++ /dev/null
-/*
- * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
- * Licensed under the GPL
- */
-
-#include <linux/kernel.h>
-#include <linux/smp.h>
-#include "asm/ptrace.h"
-#include "sysrq.h"
-
-void show_regs(struct pt_regs_subarch *regs)
-{
- printk("\n");
- show_regs_print_info(KERN_DEFAULT);
-
- printk("show_regs(): insert regs here.\n");
-#if 0
- printk("\n");
- printk("EIP: %04x:[<%08lx>] CPU: %d",0xffff & regs->xcs, regs->eip,
- smp_processor_id());
- if (regs->xcs & 3)
- printk(" ESP: %04x:%08lx",0xffff & regs->xss, regs->esp);
- printk(" EFLAGS: %08lx\n", regs->eflags);
- printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
- regs->eax, regs->ebx, regs->ecx, regs->edx);
- printk("ESI: %08lx EDI: %08lx EBP: %08lx",
- regs->esi, regs->edi, regs->ebp);
- printk(" DS: %04x ES: %04x\n",
- 0xffff & regs->xds, 0xffff & regs->xes);
-#endif
-
- show_trace(current, ®s->gpr[1]);
-}
projects / linux-beck.git / commitdiff