gnu/dist/gdb6/sim/common/sim-signal.c

   1 /* Simulator signal support
   2    Copyright (C) 1997 Free Software Foundation, Inc.
   3    Contributed by Cygnus Support
   4
   5 This file is part of the GNU Simulators.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License along
  18 with this program; if not, write to the Free Software Foundation, Inc.,
  19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include <signal.h>
  22 #include "sim-main.h"
  23
  24 /* Convert SIM_SIGFOO to SIGFOO.
  25    What to do when the host doesn't have SIGFOO is handled on a case by case
  26    basis.  Generally, in the case of passing a value back to gdb, we want gdb
  27    to not think the process has died (so it can be debugged at the point of
  28    failure).  */
  29
  30 #ifdef _MSC_VER
  31 #ifndef SIGTRAP
  32 #define SIGTRAP 5
  33 #endif
  34 #ifndef SIGBUS
  35 #define SIGBUS 10
  36 #endif
  37 #ifndef SIGQUIT
  38 #define SIGQUIT 3
  39 #endif
  40 #endif
  41
  42 int
  43 sim_signal_to_host (SIM_DESC sd, SIM_SIGNAL sig)
  44 {
  45   switch (sig)
  46     {
  47     case SIM_SIGINT :
  48       return SIGINT;
  49
  50     case SIM_SIGABRT :
  51       return SIGABRT;
  52
  53     case SIM_SIGILL :
  54 #ifdef SIGILL
  55       return SIGILL;
  56 #else
  57       return SIGSEGV;
  58 #endif
  59
  60     case SIM_SIGTRAP :
  61       return SIGTRAP;
  62
  63     case SIM_SIGBUS :
  64 #ifdef SIGBUS
  65       return SIGBUS;
  66 #else
  67       return SIGSEGV;
  68 #endif
  69
  70     case SIM_SIGSEGV :
  71       return SIGSEGV;
  72
  73     case SIM_SIGXCPU :
  74 #ifdef SIGXCPU
  75       return SIGXCPU;
  76 #endif
  77       break;
  78
  79     case SIM_SIGFPE:
  80 #ifdef SIGFPE
  81       return SIGFPE;
  82 #endif
  83       break;
  84
  85     case SIM_SIGNONE:
  86       return 0;
  87       break;
  88     }
  89
  90   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
  91 #ifdef SIGHUP
  92   return SIGHUP;  /* FIXME: Suggestions?  */
  93 #else
  94   return 1;
  95 #endif
  96 }
  97
  98 enum target_signal
  99 sim_signal_to_target (SIM_DESC sd, SIM_SIGNAL sig)
 100 {
 101   switch (sig)
 102     {
 103     case SIM_SIGINT :
 104       return TARGET_SIGNAL_INT;
 105
 106     case SIM_SIGABRT :
 107       return TARGET_SIGNAL_ABRT;
 108
 109     case SIM_SIGILL :
 110       return TARGET_SIGNAL_ILL;
 111
 112     case SIM_SIGTRAP :
 113       return TARGET_SIGNAL_TRAP;
 114
 115     case SIM_SIGBUS :
 116       return TARGET_SIGNAL_BUS;
 117
 118     case SIM_SIGSEGV :
 119       return TARGET_SIGNAL_SEGV;
 120
 121     case SIM_SIGXCPU :
 122       return TARGET_SIGNAL_XCPU;
 123
 124     case SIM_SIGFPE:
 125       return TARGET_SIGNAL_FPE;
 126       break;
 127
 128     case SIM_SIGNONE:
 129       return TARGET_SIGNAL_0;
 130       break;
 131     }
 132
 133   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
 134   return TARGET_SIGNAL_HUP;
 135 }