gdb/signame.c

   1 /* Convert between signal names and numbers, for GDB.
   2    Copyright 1990, 1991, 1992 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 /* GDB-specific, FIXME.  (This is for the SYS_SIGLIST_MISSING define).  */
  21 #include "defs.h"
  22 #include <signal.h>
  23 #include "signame.h"
  24
  25 static void
  26 init_sig PARAMS ((int, const char *, const char *));
  27
  28 static void
  29 init_sigs PARAMS ((void));
  30
  31 #if SYS_SIGLIST_MISSING
  32 /* There is too much variation in Sys V signal numbers and names, so
  33    we must initialize them at runtime.  */
  34
  35 static const char undoc[] = "unknown signal";
  36
  37 /* We'd like to make this const char*[], but whoever's using it might
  38    want to assign from it to a char*.  */
  39 char *sys_siglist[NSIG];
  40 #endif /* SYS_SIGLIST_MISSING */
  41
  42 /* Table of abbreviations for signals.  Note:  A given number can
  43    appear more than once with different abbreviations.  */
  44 typedef struct
  45   {
  46     int number;
  47     const char *abbrev;
  48   } num_abbrev;
  49 static num_abbrev sig_table[NSIG*2];
  50 /* Number of elements of sig_table used.  */
  51 static int sig_table_nelts = 0;
  52
  53 /* Enter signal number NUMBER into the tables with ABBREV and NAME.  */
  54 /* ARGSUSED */
  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 #if defined (SIGWAITING)
 202   init_sig (SIGWAITING, "WAITING", "Process's LWPs are blocked");  /* FIXME */
 203 #endif
 204 #if defined (SIGLWP)
 205   init_sig (SIGLWP, "LWP", "Signal LWP");               /* FIXME description */
 206 #endif
 207 }
 208
 209 /* Return the abbreviation for signal NUMBER.  */
 210 char *
 211 sig_abbrev (number)
 212      int number;
 213 {
 214   int i;
 215
 216   for (i = 0; i < sig_table_nelts; i++)
 217     if (sig_table[i].number == number)
 218       return (char *)sig_table[i].abbrev;
 219   return NULL;
 220 }
 221
 222 /* Return the signal number for an ABBREV, or -1 if there is no
 223    signal by that name.  */
 224 int
 225 sig_number (abbrev)
 226      const char *abbrev;
 227 {
 228   int i;
 229
 230   /* Skip over "SIG" if present.  */
 231   if (abbrev[0] == 'S' && abbrev[1] == 'I' && abbrev[2] == 'G')
 232     abbrev += 3;
 233
 234   for (i = 0; i < sig_table_nelts; i++)
 235     if (abbrev[0] == sig_table[i].abbrev[0]
 236         && strcmp (abbrev, sig_table[i].abbrev) == 0)
 237       return sig_table[i].number;
 238   return -1;
 239 }
 240
 241 #if SYS_SIGLIST_MISSING
 242 /* Print to standard error the name of SIGNAL, preceded by MESSAGE and
 243    a colon, and followed by a newline.  */
 244 void
 245 psignal (signal, message)
 246      unsigned signal;
 247      const char *message;
 248 {
 249   if (signal <= 0 || signal >= NSIG)
 250     fprintf (stderr, "%s: unknown signal", message);
 251   else
 252     fprintf (stderr, "%s: %s\n", message, sys_siglist[signal]);
 253 }
 254 #endif /* SYS_SIGLIST_MISSING */
 255
 256 void
 257 _initialize_signame ()
 258 {
 259         init_sigs ();
 260 }