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

   1 /* Set up a thread_state for proc_handle_exceptions.  MIPS version.
   2    Copyright (C) 1996, 1997 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 Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 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 }