sim/common/sim-signal.c

/* Simulator signal support
   Copyright (C) 1997, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   Contributed by Cygnus Support

This file is part of the GNU Simulators.

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 3 of the License, or
(at your option) any later version.

This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <signal.h>
#include "sim-main.h"

/* Convert SIM_SIGFOO to SIGFOO.
   What to do when the host doesn't have SIGFOO is handled on a case by case
   basis.  Generally, in the case of passing a value back to gdb, we want gdb
   to not think the process has died (so it can be debugged at the point of
   failure).  */

#ifdef _WIN32
#ifndef SIGTRAP
#define SIGTRAP 5
#endif
#ifndef SIGBUS
#define SIGBUS 10
#endif
#ifndef SIGQUIT
#define SIGQUIT 3
#endif
#endif

int
sim_signal_to_host (SIM_DESC sd, SIM_SIGNAL sig)
{
  switch (sig)
    {
    case SIM_SIGINT :
      return SIGINT;

    case SIM_SIGABRT :
      return SIGABRT;

    case SIM_SIGILL :
#ifdef SIGILL
      return SIGILL;
#else
      return SIGSEGV;
#endif

    case SIM_SIGTRAP :
      return SIGTRAP;

    case SIM_SIGBUS :
#ifdef SIGBUS
      return SIGBUS;
#else
      return SIGSEGV;
#endif

    case SIM_SIGSEGV :
      return SIGSEGV;

    case SIM_SIGXCPU :
#ifdef SIGXCPU
      return SIGXCPU;
#endif
      break;

    case SIM_SIGFPE:
#ifdef SIGFPE
      return SIGFPE;
#endif
      break;

    case SIM_SIGNONE:
      return 0;
      break;
    }

  sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
#ifdef SIGHUP
  return SIGHUP;  /* FIXME: Suggestions?  */
#else
  return 1;
#endif
}

enum target_signal 
sim_signal_to_target (SIM_DESC sd, SIM_SIGNAL sig)
{
  switch (sig)
    {
    case SIM_SIGINT :
      return TARGET_SIGNAL_INT;

    case SIM_SIGABRT :
      return TARGET_SIGNAL_ABRT;

    case SIM_SIGILL :
      return TARGET_SIGNAL_ILL;

    case SIM_SIGTRAP :
      return TARGET_SIGNAL_TRAP;

    case SIM_SIGBUS :
      return TARGET_SIGNAL_BUS;

    case SIM_SIGSEGV :
      return TARGET_SIGNAL_SEGV;

    case SIM_SIGXCPU :
      return TARGET_SIGNAL_XCPU;

    case SIM_SIGFPE:
      return TARGET_SIGNAL_FPE;
      break;

    case SIM_SIGNONE:
      return TARGET_SIGNAL_0;
      break;
    }

  sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
  return TARGET_SIGNAL_HUP;
}