1 //=============================================================================
7 //=============================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //=============================================================================
41 //#####DESCRIPTIONBEGIN####
44 // Contributors:msalter, gthomas
51 //####DESCRIPTIONEND####
53 //=============================================================================
55 #include <pkgconf/hal.h>
58 #include <pkgconf/redboot.h>
61 #if defined(CYGSEM_REDBOOT_BSP_SYSCALLS)
63 #include <cyg/hal/hal_stub.h> // Our header
64 #include <cyg/hal/hal_arch.h> // HAL_BREAKINST
65 #include <cyg/hal/hal_cache.h> // HAL_xCACHE_x
66 #include <cyg/hal/hal_intr.h> // interrupt disable/restore
68 #include <cyg/hal/hal_if.h> // ROM calling interface
69 #include <cyg/hal/hal_misc.h> // Helper functions
71 extern int __do_syscall(int func, // syscall function number
72 long arg1, long arg2, // up to four args.
74 int *retval, // syscall return value
75 int *sig); // signal to return (or 0)
78 #define SYS_interrupt 1000
81 hal_syscall_handler(void)
83 int func, arg1, arg2, arg3, arg4;
86 func = get_register(R7);
87 arg1 = get_register(R8);
88 arg2 = get_register(R9);
89 arg3 = get_register(R10);
90 arg4 = get_register(R11);
92 if (func == SYS_interrupt) {
93 // A console interrupt landed us here.
94 // Invoke the debug agent so as to cause a SIGINT.
98 if ((res = __do_syscall(func, arg1, arg2, arg3, arg4, &err, &sig)) != 0) {
99 // Skip over trap instruction
100 put_register(PC, get_register(PC)+4);
101 put_register(R8, err);
107 #endif // CYGSEM_REDBOOT_BSP_SYSCALLS