sim/common/sim-signal.c

   1 /* Simulator signal support
   2    Copyright (C) 1997-2022 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-main.h"
  26 #include "sim-signal.h"
  27
  28 /* Convert SIM_SIGFOO to SIGFOO.
  29    What to do when the host doesn't have SIGFOO is handled on a case by case
  30    basis.  Generally, in the case of passing a value back to gdb, we want gdb
  31    to not think the process has died (so it can be debugged at the point of
  32    failure).  */
  33
  34 #ifdef _WIN32
  35 #ifndef SIGTRAP
  36 #define SIGTRAP 5
  37 #endif
  38 #ifndef SIGBUS
  39 #define SIGBUS 10
  40 #endif
  41 #ifndef SIGQUIT
  42 #define SIGQUIT 3
  43 #endif
  44 #endif
  45
  46 int
  47 sim_signal_to_host (SIM_DESC sd, SIM_SIGNAL sig)
  48 {
  49   switch (sig)
  50     {
  51     case SIM_SIGINT :
  52       return SIGINT;
  53
  54     case SIM_SIGABRT :
  55       return SIGABRT;
  56
  57     case SIM_SIGILL :
  58 #ifdef SIGILL
  59       return SIGILL;
  60 #else
  61       return SIGSEGV;
  62 #endif
  63
  64     case SIM_SIGTRAP :
  65       return SIGTRAP;
  66
  67     case SIM_SIGBUS :
  68 #ifdef SIGBUS
  69       return SIGBUS;
  70 #else
  71       return SIGSEGV;
  72 #endif
  73
  74     case SIM_SIGSEGV :
  75       return SIGSEGV;
  76
  77     case SIM_SIGXCPU :
  78 #ifdef SIGXCPU
  79       return SIGXCPU;
  80 #endif
  81       break;
  82
  83     case SIM_SIGFPE:
  84 #ifdef SIGFPE
  85       return SIGFPE;
  86 #endif
  87       break;
  88
  89     case SIM_SIGNONE:
  90       return 0;
  91       break;
  92     }
  93
  94   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
  95 #ifdef SIGHUP
  96   return SIGHUP;  /* FIXME: Suggestions?  */
  97 #else
  98   return 1;
  99 #endif
 100 }
 101
 102 enum gdb_signal
 103 sim_signal_to_gdb_signal (SIM_DESC sd, SIM_SIGNAL sig)
 104 {
 105   switch (sig)
 106     {
 107     case SIM_SIGINT :
 108       return GDB_SIGNAL_INT;
 109
 110     case SIM_SIGABRT :
 111       return GDB_SIGNAL_ABRT;
 112
 113     case SIM_SIGILL :
 114       return GDB_SIGNAL_ILL;
 115
 116     case SIM_SIGTRAP :
 117       return GDB_SIGNAL_TRAP;
 118
 119     case SIM_SIGBUS :
 120       return GDB_SIGNAL_BUS;
 121
 122     case SIM_SIGSEGV :
 123       return GDB_SIGNAL_SEGV;
 124
 125     case SIM_SIGXCPU :
 126       return GDB_SIGNAL_XCPU;
 127
 128     case SIM_SIGFPE:
 129       return GDB_SIGNAL_FPE;
 130       break;
 131
 132     case SIM_SIGNONE:
 133       return GDB_SIGNAL_0;
 134       break;
 135     }
 136
 137   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);
 138   return GDB_SIGNAL_HUP;
 139 }