gdb/signame.c

   1 /* Convert between signal names and numbers.
   2    Copyright (C) 1990 Free Software Foundation, Inc.
   3
   4 This program is free software; you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License as published by
   6 the Free Software Foundation; either version 1, or (at your option)
   7 any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program; see the file COPYING.  If not, write to
  16 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  17
  18 #include <stdio.h>
  19 #include <signal.h>
  20 #include "signame.h"
  21
  22 #ifdef __STDC__
  23 #define CONST const
  24 #else
  25 #define CONST
  26 #endif
  27
  28 #ifdef SYS_SIGLIST_MISSING
  29 /* There is too much variation in Sys V signal numbers and names, so
  30    we must initialize them at runtime.  */
  31
  32 static CONST char undoc[] = "unknown signal";
  33
  34 char *sys_siglist[NSIG];
  35 #endif /* SYS_SIGLIST_MISSING */
  36
  37 /* Table of abbreviations for signals.  Note:  A given number can
  38    appear more than once with different abbreviations.  */
  39 typedef struct
  40   {
  41     int number;
  42     CONST char *abbrev;
  43   } num_abbrev;
  44 static num_abbrev sig_table[NSIG*2];
  45 /* Number of elements of sig_table used.  */
  46 static int sig_table_nelts = 0;
  47
  48 /* Enter signal number NUMBER into the tables with ABBREV and NAME.  */
  49 static void
  50 init_sig (number, abbrev, name)
  51      int number;
  52      CONST char *abbrev;
  53      CONST char *name;
  54 {
  55 #ifdef SYS_SIGLIST_MISSING
  56   sys_siglist[number] = name;
  57 #endif
  58   sig_table[sig_table_nelts].number = number;
  59   sig_table[sig_table_nelts++].abbrev = abbrev;
  60 }
  61
  62 static void init_sigs ()
  63 {
  64 #ifdef SYS_SIGLIST_MISSING
  65   int i;
  66
  67   /* Initialize signal names.  */
  68         for (i = 0; i < NSIG; i++)
  69                 sys_siglist[i] = undoc;
  70 #endif /* SYS_SIGLIST_MISSING */
  71
  72   /* Initialize signal names.  */
  73 #if defined (SIGHUP)
  74   init_sig (SIGHUP, "HUP", "Hangup");
  75 #endif
  76 #if defined (SIGINT)
  77   init_sig (SIGINT, "INT", "Interrupt");
  78 #endif
  79 #if defined (SIGQUIT)
  80   init_sig (SIGQUIT, "QUIT", "Quit");
  81 #endif
  82 #if defined (SIGILL)
  83   init_sig (SIGILL, "ILL", "Illegal Instruction");
  84 #endif
  85 #if defined (SIGTRAP)
  86   init_sig (SIGTRAP, "TRAP", "Trace/breakpoint trap");
  87 #endif
  88   /* If SIGIOT == SIGABRT, we want to print it as SIGABRT because
  89      SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't.  */
  90 #if defined (SIGABRT)
  91   init_sig (SIGABRT, "ABRT", "Aborted");
  92 #endif
  93 #if defined (SIGIOT)
  94   init_sig (SIGIOT, "IOT", "IOT trap");
  95 #endif
  96 #if defined (SIGEMT)
  97   init_sig (SIGEMT, "EMT", "EMT trap");
  98 #endif
  99 #if defined (SIGFPE)
 100   init_sig (SIGFPE, "FPE", "Floating point exception");
 101 #endif
 102 #if defined (SIGKILL)
 103   init_sig (SIGKILL, "KILL", "Killed");
 104 #endif
 105 #if defined (SIGBUS)
 106   init_sig (SIGBUS, "BUS", "Bus error");
 107 #endif
 108 #if defined (SIGSEGV)
 109   init_sig (SIGSEGV, "SEGV", "Segmentation fault");
 110 #endif
 111 #if defined (SIGSYS)
 112   init_sig (SIGSYS, "SYS", "Bad system call");
 113 #endif
 114 #if defined (SIGPIPE)
 115   init_sig (SIGPIPE, "PIPE", "Broken pipe");
 116 #endif
 117 #if defined (SIGALRM)
 118   init_sig (SIGALRM, "ALRM", "Alarm clock");
 119 #endif
 120 #if defined (SIGTERM)
 121   init_sig (SIGTERM, "TERM", "Terminated");
 122 #endif
 123 #if defined (SIGUSR1)
 124   init_sig (SIGUSR1, "USR1", "User defined signal 1");
 125 #endif
 126 #if defined (SIGUSR2)
 127   init_sig (SIGUSR2, "USR2", "User defined signal 2");
 128 #endif
 129   /* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that
 130      is what is in POSIX.1.  */
 131 #if defined (SIGCHLD)
 132   init_sig (SIGCHLD, "CHLD", "Child exited");
 133 #endif
 134 #if defined (SIGCLD)
 135   init_sig (SIGCLD, "CLD", "Child exited");
 136 #endif
 137 #if defined (SIGPWR)
 138   init_sig (SIGPWR, "PWR", "Power failure");
 139 #endif
 140 #if defined (SIGTSTP)
 141   init_sig (SIGTSTP, "TSTP", "Stopped");
 142 #endif
 143 #if defined (SIGTTIN)
 144   init_sig (SIGTTIN, "TTIN", "Stopped (tty input)");
 145 #endif
 146 #if defined (SIGTTOU)
 147   init_sig (SIGTTOU, "TTOU", "Stopped (tty output)");
 148 #endif
 149 #if defined (SIGSTOP)
 150   init_sig (SIGSTOP, "STOP", "Stopped (signal)");
 151 #endif
 152 #if defined (SIGXCPU)
 153   init_sig (SIGXCPU, "XCPU", "CPU time limit exceeded");
 154 #endif
 155 #if defined (SIGXFSZ)
 156   init_sig (SIGXFSZ, "XFSZ", "File size limit exceeded");
 157 #endif
 158 #if defined (SIGVTALRM)
 159   init_sig (SIGVTALRM, "VTALRM", "Virtual timer expired");
 160 #endif
 161 #if defined (SIGPROF)
 162   init_sig (SIGPROF, "PROF", "Profiling timer expired");
 163 #endif
 164 #if defined (SIGWINCH)
 165   /* "Window size changed" might be more accurate, but even if that
 166      is all that it means now, perhaps in the future it will be
 167      extended to cover other kinds of window changes.  */
 168   init_sig (SIGWINCH, "WINCH", "Window changed");
 169 #endif
 170 #if defined (SIGCONT)
 171   init_sig (SIGCONT, "CONT", "Continued");
 172 #endif
 173 #if defined (SIGURG)
 174   init_sig (SIGURG, "URG", "Urgent I/O condition");
 175 #endif
 176 #if defined (SIGIO)
 177   /* "I/O pending" has also been suggested.  A disadvantage is
 178      that signal only happens when the process has
 179      asked for it, not everytime I/O is pending.  Another disadvantage
 180      is the confusion from giving it a different name than under Unix.  */
 181   init_sig (SIGIO, "IO", "I/O possible");
 182 #endif
 183 #if defined (SIGWIND)
 184   init_sig (SIGWIND, "WIND", "SIGWIND");
 185 #endif
 186 #if defined (SIGPHONE)
 187   init_sig (SIGPHONE, "PHONE", "SIGPHONE");
 188 #endif
 189 #if defined (SIGPOLL)
 190   init_sig (SIGPOLL, "POLL", "I/O possible");
 191 #endif
 192 #if defined (SIGLOST)
 193   init_sig (SIGLOST, "LOST", "Resource lost");
 194 #endif
 195 }
 196
 197 /* Return the abbreviation for signal NUMBER.  */
 198 char *
 199 sig_abbrev (number)
 200      int number;
 201 {
 202   int i;
 203
 204   for (i = 0; i < sig_table_nelts; i++)
 205     if (sig_table[i].number == number)
 206       return (char *)sig_table[i].abbrev;
 207   return NULL;
 208 }
 209
 210 /* Return the signal number for an ABBREV, or -1 if there is no
 211    signal by that name.  */
 212 int
 213 sig_number (abbrev)
 214      CONST char *abbrev;
 215 {
 216   int i;
 217
 218   /* Skip over "SIG" if present.  */
 219   if (abbrev[0] == 'S' && abbrev[1] == 'I' && abbrev[2] == 'G')
 220     abbrev += 3;
 221
 222   for (i = 0; i < sig_table_nelts; i++)
 223     if (abbrev[0] == sig_table[i].abbrev[0]
 224         && strcmp (abbrev, sig_table[i].abbrev) == 0)
 225       return sig_table[i].number;
 226   return -1;
 227 }
 228
 229 #if defined (SYS_SIGLIST_MISSING)
 230 /* Print to standard error the name of SIGNAL, preceded by MESSAGE and
 231    a colon, and followed by a newline.  */
 232 void
 233 psignal (signal, message)
 234      unsigned signal;
 235      CONST char *message;
 236 {
 237   if (signal <= 0 || signal >= NSIG)
 238     fprintf (stderr, "%s: unknown signal", message);
 239   else
 240     fprintf (stderr, "%s: %s\n", message, sys_siglist[signal]);
 241 }
 242 #endif
 243
 244 void
 245 _initialize_signame ()
 246 {
 247         init_sigs ();
 248 }