sim/common/sim-signal.c

   1 /* Simulator signal support
   2    Copyright (C) 1997-2024 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
  25 #include "sim/sim.h"
  26 #include "sim-io.h"
  27 #include "sim-signal.h"
  28
  29 /* Convert SIM_SIGFOO to SIGFOO.
  30    What to do when the host doesn't have SIGFOO is handled on a case by case
  31    basis.  Generally, in the case of passing a value back to gdb, we want gdb
  32    to not think the process has died (so it can be debugged at the point of
  33    failure).  */
  34
  35 #ifdef _WIN32
  36 #ifndef SIGTRAP
  37 #define SIGTRAP 5
  38 #endif
  39 #ifndef SIGBUS
  40 #define SIGBUS 10
  41 #endif
  42 #ifndef SIGQUIT
  43 #define SIGQUIT 3
  44 #endif
  45 #endif
  46
  47 int
  48 sim_signal_to_host (SIM_DESC sd, SIM_SIGNAL sig)
  49 {
  50   switch (sig)
  51     {
  52     case SIM_SIGINT :
  53       return SIGINT;
  54
  55     case SIM_SIGABRT :
  56       return SIGABRT;
  57
  58     case SIM_SIGILL :
  59 #ifdef SIGILL
  60       return SIGILL;
  61 #else
  62       return SIGSEGV;
  63 #endif
  64
  65     case SIM_SIGTRAP :
  66       return SIGTRAP;
  67
  68     case SIM_SIGBUS :
  69 #ifdef SIGBUS
  70       return SIGBUS;
  71 #else
  72       return SIGSEGV;
  73 #endif
  74
  75     case SIM_SIGSEGV :
  76       return SIGSEGV;
  77
  78     case SIM_SIGXCPU :
  79 #ifdef SIGXCPU
  80       return SIGXCPU;
  81 #endif
  82       break;
  83
  84     case SIM_SIGFPE:
  85 #ifdef SIGFPE
  86       return SIGFPE;
  87 #endif
  88       break;
  89
  90     case SIM_SIGNONE:
  91       return 0;
  92       break;
  93     }
  94
  95   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
  96 #ifdef SIGHUP
  97   return SIGHUP;  /* FIXME: Suggestions?  */
  98 #else
  99   return 1;
 100 #endif
 101 }
 102
 103 enum gdb_signal
 104 sim_signal_to_gdb_signal (SIM_DESC sd, SIM_SIGNAL sig)
 105 {
 106   switch (sig)
 107     {
 108     case SIM_SIGINT :
 109       return GDB_SIGNAL_INT;
 110
 111     case SIM_SIGABRT :
 112       return GDB_SIGNAL_ABRT;
 113
 114     case SIM_SIGILL :
 115       return GDB_SIGNAL_ILL;
 116
 117     case SIM_SIGTRAP :
 118       return GDB_SIGNAL_TRAP;
 119
 120     case SIM_SIGBUS :
 121       return GDB_SIGNAL_BUS;
 122
 123     case SIM_SIGSEGV :
 124       return GDB_SIGNAL_SEGV;
 125
 126     case SIM_SIGXCPU :
 127       return GDB_SIGNAL_XCPU;
 128
 129     case SIM_SIGFPE:
 130       return GDB_SIGNAL_FPE;
 131       break;
 132
 133     case SIM_SIGNONE:
 134       return GDB_SIGNAL_0;
 135       break;
 136     }
 137
 138   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
 139   return GDB_SIGNAL_HUP;
 140 }