sysdeps/mach/hurd/mips/init-fault.c

   1 /* Set up a thread_state for proc_handle_exceptions.  MIPS version.
   2 Copyright (C) 1994 Free Software Foundation, Inc.
   3 This file is part of the GNU C Library.
   4
   5 The GNU C Library is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU Library General Public License as
   7 published by the Free Software Foundation; either version 2 of the
   8 License, or (at your option) any later version.
   9
  10 The GNU C Library is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 Library General Public License for more details.
  14
  15 You should have received a copy of the GNU Library General Public
  16 License along with the GNU C Library; see the file COPYING.LIB.  If
  17 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  18 Cambridge, MA 02139, USA.  */
  19
  20 #include <hurd/signal.h>
  21 #include <mach/thread_status.h>
  22 #include <string.h>
  23 #include <setjmp.h>
  24
  25 extern jmp_buf _hurd_sigthread_fault_env;
  26
  27 static char fault_stack[32];
  28 static volatile void
  29 faulted (void)
  30 {
  31   __longjmp (_hurd_sigthread_fault_env, 1);
  32 }
  33
  34 void
  35 _hurd_initialize_fault_recovery_state (void *state)
  36 {
  37   struct mips_thread_state *ts = state;
  38   memset (ts, 0, sizeof (*ts));
  39   ts->r29 = (int) &fault_stack[sizeof (fault_stack)];
  40   ts->pc = (int) &faulted;
  41 }