sim/common/sim-signal.c

   1 /* Simulator signal support
   2    Copyright (C) 1997-2021 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 /* This must come before any other includes.  */
  21 #include "defs.h"
  22
  23 #include <signal.h>
  24 #include "sim-main.h"
  25
  26 /* Convert SIM_SIGFOO to SIGFOO.
  27    What to do when the host doesn't have SIGFOO is handled on a case by case
  28    basis.  Generally, in the case of passing a value back to gdb, we want gdb
  29    to not think the process has died (so it can be debugged at the point of
  30    failure).  */
  31
  32 #ifdef _WIN32
  33 #ifndef SIGTRAP
  34 #define SIGTRAP 5
  35 #endif
  36 #ifndef SIGBUS
  37 #define SIGBUS 10
  38 #endif
  39 #ifndef SIGQUIT
  40 #define SIGQUIT 3
  41 #endif
  42 #endif
  43
  44 int
  45 sim_signal_to_host (SIM_DESC sd, SIM_SIGNAL sig)
  46 {
  47   switch (sig)
  48     {
  49     case SIM_SIGINT :
  50       return SIGINT;
  51
  52     case SIM_SIGABRT :
  53       return SIGABRT;
  54
  55     case SIM_SIGILL :
  56 #ifdef SIGILL
  57       return SIGILL;
  58 #else
  59       return SIGSEGV;
  60 #endif
  61
  62     case SIM_SIGTRAP :
  63       return SIGTRAP;
  64
  65     case SIM_SIGBUS :
  66 #ifdef SIGBUS
  67       return SIGBUS;
  68 #else
  69       return SIGSEGV;
  70 #endif
  71
  72     case SIM_SIGSEGV :
  73       return SIGSEGV;
  74
  75     case SIM_SIGXCPU :
  76 #ifdef SIGXCPU
  77       return SIGXCPU;
  78 #endif
  79       break;
  80
  81     case SIM_SIGFPE:
  82 #ifdef SIGFPE
  83       return SIGFPE;
  84 #endif
  85       break;
  86
  87     case SIM_SIGNONE:
  88       return 0;
  89       break;
  90     }
  91
  92   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
  93 #ifdef SIGHUP
  94   return SIGHUP;  /* FIXME: Suggestions?  */
  95 #else
  96   return 1;
  97 #endif
  98 }
  99
 100 enum gdb_signal
 101 sim_signal_to_gdb_signal (SIM_DESC sd, SIM_SIGNAL sig)
 102 {
 103   switch (sig)
 104     {
 105     case SIM_SIGINT :
 106       return GDB_SIGNAL_INT;
 107
 108     case SIM_SIGABRT :
 109       return GDB_SIGNAL_ABRT;
 110
 111     case SIM_SIGILL :
 112       return GDB_SIGNAL_ILL;
 113
 114     case SIM_SIGTRAP :
 115       return GDB_SIGNAL_TRAP;
 116
 117     case SIM_SIGBUS :
 118       return GDB_SIGNAL_BUS;
 119
 120     case SIM_SIGSEGV :
 121       return GDB_SIGNAL_SEGV;
 122
 123     case SIM_SIGXCPU :
 124       return GDB_SIGNAL_XCPU;
 125
 126     case SIM_SIGFPE:
 127       return GDB_SIGNAL_FPE;
 128       break;
 129
 130     case SIM_SIGNONE:
 131       return GDB_SIGNAL_0;
 132       break;
 133     }
 134
 135   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
 136   return GDB_SIGNAL_HUP;
 137 }