sim/common/sim-signal.c

   1 /* Simulator signal support
   2    Copyright (C) 1997-2013 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 3 of the License, or
  10 (at your option) 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
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include <signal.h>
  21 #include "sim-main.h"
  22
  23 /* Convert SIM_SIGFOO to SIGFOO.
  24    What to do when the host doesn't have SIGFOO is handled on a case by case
  25    basis.  Generally, in the case of passing a value back to gdb, we want gdb
  26    to not think the process has died (so it can be debugged at the point of
  27    failure).  */
  28
  29 #ifdef _WIN32
  30 #ifndef SIGTRAP
  31 #define SIGTRAP 5
  32 #endif
  33 #ifndef SIGBUS
  34 #define SIGBUS 10
  35 #endif
  36 #ifndef SIGQUIT
  37 #define SIGQUIT 3
  38 #endif
  39 #endif
  40
  41 int
  42 sim_signal_to_host (SIM_DESC sd, SIM_SIGNAL sig)
  43 {
  44   switch (sig)
  45     {
  46     case SIM_SIGINT :
  47       return SIGINT;
  48
  49     case SIM_SIGABRT :
  50       return SIGABRT;
  51
  52     case SIM_SIGILL :
  53 #ifdef SIGILL
  54       return SIGILL;
  55 #else
  56       return SIGSEGV;
  57 #endif
  58
  59     case SIM_SIGTRAP :
  60       return SIGTRAP;
  61
  62     case SIM_SIGBUS :
  63 #ifdef SIGBUS
  64       return SIGBUS;
  65 #else
  66       return SIGSEGV;
  67 #endif
  68
  69     case SIM_SIGSEGV :
  70       return SIGSEGV;
  71
  72     case SIM_SIGXCPU :
  73 #ifdef SIGXCPU
  74       return SIGXCPU;
  75 #endif
  76       break;
  77
  78     case SIM_SIGFPE:
  79 #ifdef SIGFPE
  80       return SIGFPE;
  81 #endif
  82       break;
  83
  84     case SIM_SIGNONE:
  85       return 0;
  86       break;
  87     }
  88
  89   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
  90 #ifdef SIGHUP
  91   return SIGHUP;  /* FIXME: Suggestions?  */
  92 #else
  93   return 1;
  94 #endif
  95 }
  96
  97 enum gdb_signal
  98 sim_signal_to_gdb_signal (SIM_DESC sd, SIM_SIGNAL sig)
  99 {
 100   switch (sig)
 101     {
 102     case SIM_SIGINT :
 103       return GDB_SIGNAL_INT;
 104
 105     case SIM_SIGABRT :
 106       return GDB_SIGNAL_ABRT;
 107
 108     case SIM_SIGILL :
 109       return GDB_SIGNAL_ILL;
 110
 111     case SIM_SIGTRAP :
 112       return GDB_SIGNAL_TRAP;
 113
 114     case SIM_SIGBUS :
 115       return GDB_SIGNAL_BUS;
 116
 117     case SIM_SIGSEGV :
 118       return GDB_SIGNAL_SEGV;
 119
 120     case SIM_SIGXCPU :
 121       return GDB_SIGNAL_XCPU;
 122
 123     case SIM_SIGFPE:
 124       return GDB_SIGNAL_FPE;
 125       break;
 126
 127     case SIM_SIGNONE:
 128       return GDB_SIGNAL_0;
 129       break;
 130     }
 131
 132   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
 133   return GDB_SIGNAL_HUP;
 134 }