gdb/signame.c

   1 /* Convert between signal names and numbers.
   2    Copyright (C) 1990 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #include <stdio.h>
  21 #include <signal.h>
  22 #include "signame.h"
  23
  24 /* GDB-specific, FIXME.  (This is for the SYS_SIGLIST_MISSING define).  */
  25 #include "defs.h"
  26 #include "param.h"
  27
  28 #ifdef __STDC__
  29 #define CONST const
  30 #else
  31 #define CONST
  32 #endif
  33
  34 #if SYS_SIGLIST_MISSING
  35 /* There is too much variation in Sys V signal numbers and names, so
  36    we must initialize them at runtime.  */
  37
  38 static CONST char undoc[] = "unknown signal";
  39
  40 /* We'd like to make this const char*[], but whoever's using it might
  41    want to assign from it to a char*.  */
  42 char *sys_siglist[NSIG];
  43 #endif /* SYS_SIGLIST_MISSING */
  44
  45 /* Table of abbreviations for signals.  Note:  A given number can
  46    appear more than once with different abbreviations.  */
  47 typedef struct
  48   {
  49     int number;
  50     CONST char *abbrev;
  51   } num_abbrev;
  52 static num_abbrev sig_table[NSIG*2];
  53 /* Number of elements of sig_table used.  */
  54 static int sig_table_nelts = 0;
  55
  56 /* Enter signal number NUMBER into the tables with ABBREV and NAME.  */
  57 /* ARGSUSED */
  58 static void
  59 init_sig (number, abbrev, name)
  60      int number;
  61      CONST char *abbrev;
  62      CONST char *name;
  63 {
  64 #if SYS_SIGLIST_MISSING
  65   sys_siglist[number] = (char *) name;
  66 #endif
  67   sig_table[sig_table_nelts].number = number;
  68   sig_table[sig_table_nelts++].abbrev = abbrev;
  69 }
  70
  71 static void init_sigs ()
  72 {
  73 #if SYS_SIGLIST_MISSING
  74   int i;
  75
  76   /* Initialize signal names.  */
  77         for (i = 0; i < NSIG; i++)
  78                 sys_siglist[i] = (char *) undoc;
  79 #endif /* SYS_SIGLIST_MISSING */
  80
  81   /* Initialize signal names.  */
  82 #if defined (SIGHUP)
  83   init_sig (SIGHUP, "HUP", "Hangup");
  84 #endif
  85 #if defined (SIGINT)
  86   init_sig (SIGINT, "INT", "Interrupt");
  87 #endif
  88 #if defined (SIGQUIT)
  89   init_sig (SIGQUIT, "QUIT", "Quit");
  90 #endif
  91 #if defined (SIGILL)
  92   init_sig (SIGILL, "ILL", "Illegal Instruction");
  93 #endif
  94 #if defined (SIGTRAP)
  95   init_sig (SIGTRAP, "TRAP", "Trace/breakpoint trap");
  96 #endif
  97   /* If SIGIOT == SIGABRT, we want to print it as SIGABRT because
  98      SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't.  */
  99 #if defined (SIGABRT)
 100   init_sig (SIGABRT, "ABRT", "Aborted");
 101 #endif
 102 #if defined (SIGIOT)
 103   init_sig (SIGIOT, "IOT", "IOT trap");
 104 #endif
 105 #if defined (SIGEMT)
 106   init_sig (SIGEMT, "EMT", "EMT trap");
 107 #endif
 108 #if defined (SIGFPE)
 109   init_sig (SIGFPE, "FPE", "Floating point exception");
 110 #endif
 111 #if defined (SIGKILL)
 112   init_sig (SIGKILL, "KILL", "Killed");
 113 #endif
 114 #if defined (SIGBUS)
 115   init_sig (SIGBUS, "BUS", "Bus error");
 116 #endif
 117 #if defined (SIGSEGV)
 118   init_sig (SIGSEGV, "SEGV", "Segmentation fault");
 119 #endif
 120 #if defined (SIGSYS)
 121   init_sig (SIGSYS, "SYS", "Bad system call");
 122 #endif
 123 #if defined (SIGPIPE)
 124   init_sig (SIGPIPE, "PIPE", "Broken pipe");
 125 #endif
 126 #if defined (SIGALRM)
 127   init_sig (SIGALRM, "ALRM", "Alarm clock");
 128 #endif
 129 #if defined (SIGTERM)
 130   init_sig (SIGTERM, "TERM", "Terminated");
 131 #endif
 132 #if defined (SIGUSR1)
 133   init_sig (SIGUSR1, "USR1", "User defined signal 1");
 134 #endif
 135 #if defined (SIGUSR2)
 136   init_sig (SIGUSR2, "USR2", "User defined signal 2");
 137 #endif
 138   /* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that
 139      is what is in POSIX.1.  */
 140 #if defined (SIGCHLD)
 141   init_sig (SIGCHLD, "CHLD", "Child exited");
 142 #endif
 143 #if defined (SIGCLD)
 144   init_sig (SIGCLD, "CLD", "Child exited");
 145 #endif
 146 #if defined (SIGPWR)
 147   init_sig (SIGPWR, "PWR", "Power failure");
 148 #endif
 149 #if defined (SIGTSTP)
 150   init_sig (SIGTSTP, "TSTP", "Stopped");
 151 #endif
 152 #if defined (SIGTTIN)
 153   init_sig (SIGTTIN, "TTIN", "Stopped (tty input)");
 154 #endif
 155 #if defined (SIGTTOU)
 156   init_sig (SIGTTOU, "TTOU", "Stopped (tty output)");
 157 #endif
 158 #if defined (SIGSTOP)
 159   init_sig (SIGSTOP, "STOP", "Stopped (signal)");
 160 #endif
 161 #if defined (SIGXCPU)
 162   init_sig (SIGXCPU, "XCPU", "CPU time limit exceeded");
 163 #endif
 164 #if defined (SIGXFSZ)
 165   init_sig (SIGXFSZ, "XFSZ", "File size limit exceeded");
 166 #endif
 167 #if defined (SIGVTALRM)
 168   init_sig (SIGVTALRM, "VTALRM", "Virtual timer expired");
 169 #endif
 170 #if defined (SIGPROF)
 171   init_sig (SIGPROF, "PROF", "Profiling timer expired");
 172 #endif
 173 #if defined (SIGWINCH)
 174   /* "Window size changed" might be more accurate, but even if that
 175      is all that it means now, perhaps in the future it will be
 176      extended to cover other kinds of window changes.  */
 177   init_sig (SIGWINCH, "WINCH", "Window changed");
 178 #endif
 179 #if defined (SIGCONT)
 180   init_sig (SIGCONT, "CONT", "Continued");
 181 #endif
 182 #if defined (SIGURG)
 183   init_sig (SIGURG, "URG", "Urgent I/O condition");
 184 #endif
 185 #if defined (SIGIO)
 186   /* "I/O pending" has also been suggested.  A disadvantage is
 187      that signal only happens when the process has
 188      asked for it, not everytime I/O is pending.  Another disadvantage
 189      is the confusion from giving it a different name than under Unix.  */
 190   init_sig (SIGIO, "IO", "I/O possible");
 191 #endif
 192 #if defined (SIGWIND)
 193   init_sig (SIGWIND, "WIND", "SIGWIND");
 194 #endif
 195 #if defined (SIGPHONE)
 196   init_sig (SIGPHONE, "PHONE", "SIGPHONE");
 197 #endif
 198 #if defined (SIGPOLL)
 199   init_sig (SIGPOLL, "POLL", "I/O possible");
 200 #endif
 201 #if defined (SIGLOST)
 202   init_sig (SIGLOST, "LOST", "Resource lost");
 203 #endif
 204 }
 205
 206 /* Return the abbreviation for signal NUMBER.  */
 207 char *
 208 sig_abbrev (number)
 209      int number;
 210 {
 211   int i;
 212
 213   for (i = 0; i < sig_table_nelts; i++)
 214     if (sig_table[i].number == number)
 215       return (char *)sig_table[i].abbrev;
 216   return NULL;
 217 }
 218
 219 /* Return the signal number for an ABBREV, or -1 if there is no
 220    signal by that name.  */
 221 int
 222 sig_number (abbrev)
 223      CONST char *abbrev;
 224 {
 225   int i;
 226
 227   /* Skip over "SIG" if present.  */
 228   if (abbrev[0] == 'S' && abbrev[1] == 'I' && abbrev[2] == 'G')
 229     abbrev += 3;
 230
 231   for (i = 0; i < sig_table_nelts; i++)
 232     if (abbrev[0] == sig_table[i].abbrev[0]
 233         && strcmp (abbrev, sig_table[i].abbrev) == 0)
 234       return sig_table[i].number;
 235   return -1;
 236 }
 237
 238 #if SYS_SIGLIST_MISSING
 239 /* Print to standard error the name of SIGNAL, preceded by MESSAGE and
 240    a colon, and followed by a newline.  */
 241 void
 242 psignal (signal, message)
 243      unsigned signal;
 244      CONST char *message;
 245 {
 246   if (signal <= 0 || signal >= NSIG)
 247     fprintf (stderr, "%s: unknown signal", message);
 248   else
 249     fprintf (stderr, "%s: %s\n", message, sys_siglist[signal]);
 250 }
 251 #endif /* SYS_SIGLIST_MISSING */
 252
 253 void
 254 _initialize_signame ()
 255 {
 256         init_sigs ();
 257 }