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 /* GDB-specific, FIXME.  (This is for the SYS_SIGLIST_MISSING define).  */
  23 #include "defs.h"
  24 #include "param.h"
  25
  26 #ifdef __STDC__
  27 #define CONST const
  28 #else
  29 #define CONST
  30 #endif
  31
  32 #if SYS_SIGLIST_MISSING
  33 /* There is too much variation in Sys V signal numbers and names, so
  34    we must initialize them at runtime.  */
  35
  36 static CONST char undoc[] = "unknown signal";
  37
  38 /* We'd like to make this const char*[], but whoever's using it might
  39    want to assign from it to a char*.  */
  40 char *sys_siglist[NSIG];
  41 #endif /* SYS_SIGLIST_MISSING */
  42
  43 /* Table of abbreviations for signals.  Note:  A given number can
  44    appear more than once with different abbreviations.  */
  45 typedef struct
  46   {
  47     int number;
  48     CONST char *abbrev;
  49   } num_abbrev;
  50 static num_abbrev sig_table[NSIG*2];
  51 /* Number of elements of sig_table used.  */
  52 static int sig_table_nelts = 0;
  53
  54 /* Enter signal number NUMBER into the tables with ABBREV and NAME.  */
  55 static void
  56 init_sig (number, abbrev, name)
  57      int number;
  58      CONST char *abbrev;
  59      CONST char *name;
  60 {
  61 #if SYS_SIGLIST_MISSING
  62   sys_siglist[number] = (char *) name;
  63 #endif
  64   sig_table[sig_table_nelts].number = number;
  65   sig_table[sig_table_nelts++].abbrev = abbrev;
  66 }
  67
  68 static void init_sigs ()
  69 {
  70 #if SYS_SIGLIST_MISSING
  71   int i;
  72
  73   /* Initialize signal names.  */
  74         for (i = 0; i < NSIG; i++)
  75                 sys_siglist[i] = (char *) undoc;
  76 #endif /* SYS_SIGLIST_MISSING */
  77
  78   /* Initialize signal names.  */
  79 #if defined (SIGHUP)
  80   init_sig (SIGHUP, "HUP", "Hangup");
  81 #endif
  82 #if defined (SIGINT)
  83   init_sig (SIGINT, "INT", "Interrupt");
  84 #endif
  85 #if defined (SIGQUIT)
  86   init_sig (SIGQUIT, "QUIT", "Quit");
  87 #endif
  88 #if defined (SIGILL)
  89   init_sig (SIGILL, "ILL", "Illegal Instruction");
  90 #endif
  91 #if defined (SIGTRAP)
  92   init_sig (SIGTRAP, "TRAP", "Trace/breakpoint trap");
  93 #endif
  94   /* If SIGIOT == SIGABRT, we want to print it as SIGABRT because
  95      SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't.  */
  96 #if defined (SIGABRT)
  97   init_sig (SIGABRT, "ABRT", "Aborted");
  98 #endif
  99 #if defined (SIGIOT)
 100   init_sig (SIGIOT, "IOT", "IOT trap");
 101 #endif
 102 #if defined (SIGEMT)
 103   init_sig (SIGEMT, "EMT", "EMT trap");
 104 #endif
 105 #if defined (SIGFPE)
 106   init_sig (SIGFPE, "FPE", "Floating point exception");
 107 #endif
 108 #if defined (SIGKILL)
 109   init_sig (SIGKILL, "KILL", "Killed");
 110 #endif
 111 #if defined (SIGBUS)
 112   init_sig (SIGBUS, "BUS", "Bus error");
 113 #endif
 114 #if defined (SIGSEGV)
 115   init_sig (SIGSEGV, "SEGV", "Segmentation fault");
 116 #endif
 117 #if defined (SIGSYS)
 118   init_sig (SIGSYS, "SYS", "Bad system call");
 119 #endif
 120 #if defined (SIGPIPE)
 121   init_sig (SIGPIPE, "PIPE", "Broken pipe");
 122 #endif
 123 #if defined (SIGALRM)
 124   init_sig (SIGALRM, "ALRM", "Alarm clock");
 125 #endif
 126 #if defined (SIGTERM)
 127   init_sig (SIGTERM, "TERM", "Terminated");
 128 #endif
 129 #if defined (SIGUSR1)
 130   init_sig (SIGUSR1, "USR1", "User defined signal 1");
 131 #endif
 132 #if defined (SIGUSR2)
 133   init_sig (SIGUSR2, "USR2", "User defined signal 2");
 134 #endif
 135   /* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that
 136      is what is in POSIX.1.  */
 137 #if defined (SIGCHLD)
 138   init_sig (SIGCHLD, "CHLD", "Child exited");
 139 #endif
 140 #if defined (SIGCLD)
 141   init_sig (SIGCLD, "CLD", "Child exited");
 142 #endif
 143 #if defined (SIGPWR)
 144   init_sig (SIGPWR, "PWR", "Power failure");
 145 #endif
 146 #if defined (SIGTSTP)
 147   init_sig (SIGTSTP, "TSTP", "Stopped");
 148 #endif
 149 #if defined (SIGTTIN)
 150   init_sig (SIGTTIN, "TTIN", "Stopped (tty input)");
 151 #endif
 152 #if defined (SIGTTOU)
 153   init_sig (SIGTTOU, "TTOU", "Stopped (tty output)");
 154 #endif
 155 #if defined (SIGSTOP)
 156   init_sig (SIGSTOP, "STOP", "Stopped (signal)");
 157 #endif
 158 #if defined (SIGXCPU)
 159   init_sig (SIGXCPU, "XCPU", "CPU time limit exceeded");
 160 #endif
 161 #if defined (SIGXFSZ)
 162   init_sig (SIGXFSZ, "XFSZ", "File size limit exceeded");
 163 #endif
 164 #if defined (SIGVTALRM)
 165   init_sig (SIGVTALRM, "VTALRM", "Virtual timer expired");
 166 #endif
 167 #if defined (SIGPROF)
 168   init_sig (SIGPROF, "PROF", "Profiling timer expired");
 169 #endif
 170 #if defined (SIGWINCH)
 171   /* "Window size changed" might be more accurate, but even if that
 172      is all that it means now, perhaps in the future it will be
 173      extended to cover other kinds of window changes.  */
 174   init_sig (SIGWINCH, "WINCH", "Window changed");
 175 #endif
 176 #if defined (SIGCONT)
 177   init_sig (SIGCONT, "CONT", "Continued");
 178 #endif
 179 #if defined (SIGURG)
 180   init_sig (SIGURG, "URG", "Urgent I/O condition");
 181 #endif
 182 #if defined (SIGIO)
 183   /* "I/O pending" has also been suggested.  A disadvantage is
 184      that signal only happens when the process has
 185      asked for it, not everytime I/O is pending.  Another disadvantage
 186      is the confusion from giving it a different name than under Unix.  */
 187   init_sig (SIGIO, "IO", "I/O possible");
 188 #endif
 189 #if defined (SIGWIND)
 190   init_sig (SIGWIND, "WIND", "SIGWIND");
 191 #endif
 192 #if defined (SIGPHONE)
 193   init_sig (SIGPHONE, "PHONE", "SIGPHONE");
 194 #endif
 195 #if defined (SIGPOLL)
 196   init_sig (SIGPOLL, "POLL", "I/O possible");
 197 #endif
 198 #if defined (SIGLOST)
 199   init_sig (SIGLOST, "LOST", "Resource lost");
 200 #endif
 201 }
 202
 203 /* Return the abbreviation for signal NUMBER.  */
 204 char *
 205 sig_abbrev (number)
 206      int number;
 207 {
 208   int i;
 209
 210   for (i = 0; i < sig_table_nelts; i++)
 211     if (sig_table[i].number == number)
 212       return (char *)sig_table[i].abbrev;
 213   return NULL;
 214 }
 215
 216 /* Return the signal number for an ABBREV, or -1 if there is no
 217    signal by that name.  */
 218 int
 219 sig_number (abbrev)
 220      CONST char *abbrev;
 221 {
 222   int i;
 223
 224   /* Skip over "SIG" if present.  */
 225   if (abbrev[0] == 'S' && abbrev[1] == 'I' && abbrev[2] == 'G')
 226     abbrev += 3;
 227
 228   for (i = 0; i < sig_table_nelts; i++)
 229     if (abbrev[0] == sig_table[i].abbrev[0]
 230         && strcmp (abbrev, sig_table[i].abbrev) == 0)
 231       return sig_table[i].number;
 232   return -1;
 233 }
 234
 235 #if SYS_SIGLIST_MISSING
 236 /* Print to standard error the name of SIGNAL, preceded by MESSAGE and
 237    a colon, and followed by a newline.  */
 238 void
 239 psignal (signal, message)
 240      unsigned signal;
 241      CONST char *message;
 242 {
 243   if (signal <= 0 || signal >= NSIG)
 244     fprintf (stderr, "%s: unknown signal", message);
 245   else
 246     fprintf (stderr, "%s: %s\n", message, sys_siglist[signal]);
 247 }
 248 #endif /* SYS_SIGLIST_MISSING */
 249
 250 void
 251 _initialize_signame ()
 252 {
 253         init_sigs ();
 254 }