gdb/common/signals.c

   1 /* Target signal translation functions for GDB.
   2    Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   3    2000, 2001, 2002, 2003, 2006, 2007, 2008, 2009, 2010
   4    Free Software Foundation, Inc.
   5    Contributed by Cygnus Support.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #ifdef GDBSERVER
  23 #include "server.h"
  24 #else
  25 #include "defs.h"
  26 #include "gdb_string.h"
  27 #endif
  28
  29 #ifdef HAVE_SIGNAL_H
  30 #include <signal.h>
  31 #endif
  32
  33 #include "gdb_signals.h"
  34
  35 struct gdbarch;
  36
  37 /* Always use __SIGRTMIN if it's available.  SIGRTMIN is the lowest
  38    _available_ realtime signal, not the lowest supported; glibc takes
  39    several for its own use.  */
  40
  41 #ifndef REALTIME_LO
  42 # if defined(__SIGRTMIN)
  43 #  define REALTIME_LO __SIGRTMIN
  44 #  define REALTIME_HI (__SIGRTMAX + 1)
  45 # elif defined(SIGRTMIN)
  46 #  define REALTIME_LO SIGRTMIN
  47 #  define REALTIME_HI (SIGRTMAX + 1)
  48 # endif
  49 #endif
  50
  51 /* This table must match in order and size the signals in enum target_signal.  */
  52
  53 static const struct {
  54   const char *name;
  55   const char *string;
  56   } signals [] =
  57 {
  58 #define SET(symbol, constant, name, string) { name, string },
  59 #include "gdb/signals.def"
  60 #undef SET
  61 };
  62
  63
  64 /* Return the string for a signal.  */
  65 const char *
  66 target_signal_to_string (enum target_signal sig)
  67 {
  68   if ((int) sig >= TARGET_SIGNAL_FIRST && (int) sig <= TARGET_SIGNAL_LAST)
  69     return signals[sig].string;
  70   else
  71     return signals[TARGET_SIGNAL_UNKNOWN].string;
  72 }
  73
  74 /* Return the name for a signal.  */
  75 const char *
  76 target_signal_to_name (enum target_signal sig)
  77 {
  78   if ((int) sig >= TARGET_SIGNAL_FIRST && (int) sig <= TARGET_SIGNAL_LAST
  79       && signals[sig].name != NULL)
  80     return signals[sig].name;
  81   else
  82     /* I think the code which prints this will always print it along
  83        with the string, so no need to be verbose (very old comment).  */
  84     return "?";
  85 }
  86
  87 /* Given a name, return its signal.  */
  88 enum target_signal
  89 target_signal_from_name (const char *name)
  90 {
  91   enum target_signal sig;
  92
  93   /* It's possible we also should allow "SIGCLD" as well as "SIGCHLD"
  94      for TARGET_SIGNAL_SIGCHLD.  SIGIOT, on the other hand, is more
  95      questionable; seems like by now people should call it SIGABRT
  96      instead.  */
  97
  98   /* This ugly cast brought to you by the native VAX compiler.  */
  99   for (sig = TARGET_SIGNAL_HUP;
 100        sig < TARGET_SIGNAL_LAST;
 101        sig = (enum target_signal) ((int) sig + 1))
 102     if (signals[sig].name != NULL
 103         && strcmp (name, signals[sig].name) == 0)
 104       return sig;
 105   return TARGET_SIGNAL_UNKNOWN;
 106 }
 107 \f
 108 /* The following functions are to help certain targets deal
 109    with the signal/waitstatus stuff.  They could just as well be in
 110    a file called native-utils.c or unixwaitstatus-utils.c or whatever.  */
 111
 112 /* Convert host signal to our signals.  */
 113 enum target_signal
 114 target_signal_from_host (int hostsig)
 115 {
 116   /* A switch statement would make sense but would require special kludges
 117      to deal with the cases where more than one signal has the same number.  */
 118
 119   if (hostsig == 0)
 120     return TARGET_SIGNAL_0;
 121
 122 #if defined (SIGHUP)
 123   if (hostsig == SIGHUP)
 124     return TARGET_SIGNAL_HUP;
 125 #endif
 126 #if defined (SIGINT)
 127   if (hostsig == SIGINT)
 128     return TARGET_SIGNAL_INT;
 129 #endif
 130 #if defined (SIGQUIT)
 131   if (hostsig == SIGQUIT)
 132     return TARGET_SIGNAL_QUIT;
 133 #endif
 134 #if defined (SIGILL)
 135   if (hostsig == SIGILL)
 136     return TARGET_SIGNAL_ILL;
 137 #endif
 138 #if defined (SIGTRAP)
 139   if (hostsig == SIGTRAP)
 140     return TARGET_SIGNAL_TRAP;
 141 #endif
 142 #if defined (SIGABRT)
 143   if (hostsig == SIGABRT)
 144     return TARGET_SIGNAL_ABRT;
 145 #endif
 146 #if defined (SIGEMT)
 147   if (hostsig == SIGEMT)
 148     return TARGET_SIGNAL_EMT;
 149 #endif
 150 #if defined (SIGFPE)
 151   if (hostsig == SIGFPE)
 152     return TARGET_SIGNAL_FPE;
 153 #endif
 154 #if defined (SIGKILL)
 155   if (hostsig == SIGKILL)
 156     return TARGET_SIGNAL_KILL;
 157 #endif
 158 #if defined (SIGBUS)
 159   if (hostsig == SIGBUS)
 160     return TARGET_SIGNAL_BUS;
 161 #endif
 162 #if defined (SIGSEGV)
 163   if (hostsig == SIGSEGV)
 164     return TARGET_SIGNAL_SEGV;
 165 #endif
 166 #if defined (SIGSYS)
 167   if (hostsig == SIGSYS)
 168     return TARGET_SIGNAL_SYS;
 169 #endif
 170 #if defined (SIGPIPE)
 171   if (hostsig == SIGPIPE)
 172     return TARGET_SIGNAL_PIPE;
 173 #endif
 174 #if defined (SIGALRM)
 175   if (hostsig == SIGALRM)
 176     return TARGET_SIGNAL_ALRM;
 177 #endif
 178 #if defined (SIGTERM)
 179   if (hostsig == SIGTERM)
 180     return TARGET_SIGNAL_TERM;
 181 #endif
 182 #if defined (SIGUSR1)
 183   if (hostsig == SIGUSR1)
 184     return TARGET_SIGNAL_USR1;
 185 #endif
 186 #if defined (SIGUSR2)
 187   if (hostsig == SIGUSR2)
 188     return TARGET_SIGNAL_USR2;
 189 #endif
 190 #if defined (SIGCLD)
 191   if (hostsig == SIGCLD)
 192     return TARGET_SIGNAL_CHLD;
 193 #endif
 194 #if defined (SIGCHLD)
 195   if (hostsig == SIGCHLD)
 196     return TARGET_SIGNAL_CHLD;
 197 #endif
 198 #if defined (SIGPWR)
 199   if (hostsig == SIGPWR)
 200     return TARGET_SIGNAL_PWR;
 201 #endif
 202 #if defined (SIGWINCH)
 203   if (hostsig == SIGWINCH)
 204     return TARGET_SIGNAL_WINCH;
 205 #endif
 206 #if defined (SIGURG)
 207   if (hostsig == SIGURG)
 208     return TARGET_SIGNAL_URG;
 209 #endif
 210 #if defined (SIGIO)
 211   if (hostsig == SIGIO)
 212     return TARGET_SIGNAL_IO;
 213 #endif
 214 #if defined (SIGPOLL)
 215   if (hostsig == SIGPOLL)
 216     return TARGET_SIGNAL_POLL;
 217 #endif
 218 #if defined (SIGSTOP)
 219   if (hostsig == SIGSTOP)
 220     return TARGET_SIGNAL_STOP;
 221 #endif
 222 #if defined (SIGTSTP)
 223   if (hostsig == SIGTSTP)
 224     return TARGET_SIGNAL_TSTP;
 225 #endif
 226 #if defined (SIGCONT)
 227   if (hostsig == SIGCONT)
 228     return TARGET_SIGNAL_CONT;
 229 #endif
 230 #if defined (SIGTTIN)
 231   if (hostsig == SIGTTIN)
 232     return TARGET_SIGNAL_TTIN;
 233 #endif
 234 #if defined (SIGTTOU)
 235   if (hostsig == SIGTTOU)
 236     return TARGET_SIGNAL_TTOU;
 237 #endif
 238 #if defined (SIGVTALRM)
 239   if (hostsig == SIGVTALRM)
 240     return TARGET_SIGNAL_VTALRM;
 241 #endif
 242 #if defined (SIGPROF)
 243   if (hostsig == SIGPROF)
 244     return TARGET_SIGNAL_PROF;
 245 #endif
 246 #if defined (SIGXCPU)
 247   if (hostsig == SIGXCPU)
 248     return TARGET_SIGNAL_XCPU;
 249 #endif
 250 #if defined (SIGXFSZ)
 251   if (hostsig == SIGXFSZ)
 252     return TARGET_SIGNAL_XFSZ;
 253 #endif
 254 #if defined (SIGWIND)
 255   if (hostsig == SIGWIND)
 256     return TARGET_SIGNAL_WIND;
 257 #endif
 258 #if defined (SIGPHONE)
 259   if (hostsig == SIGPHONE)
 260     return TARGET_SIGNAL_PHONE;
 261 #endif
 262 #if defined (SIGLOST)
 263   if (hostsig == SIGLOST)
 264     return TARGET_SIGNAL_LOST;
 265 #endif
 266 #if defined (SIGWAITING)
 267   if (hostsig == SIGWAITING)
 268     return TARGET_SIGNAL_WAITING;
 269 #endif
 270 #if defined (SIGCANCEL)
 271   if (hostsig == SIGCANCEL)
 272     return TARGET_SIGNAL_CANCEL;
 273 #endif
 274 #if defined (SIGLWP)
 275   if (hostsig == SIGLWP)
 276     return TARGET_SIGNAL_LWP;
 277 #endif
 278 #if defined (SIGDANGER)
 279   if (hostsig == SIGDANGER)
 280     return TARGET_SIGNAL_DANGER;
 281 #endif
 282 #if defined (SIGGRANT)
 283   if (hostsig == SIGGRANT)
 284     return TARGET_SIGNAL_GRANT;
 285 #endif
 286 #if defined (SIGRETRACT)
 287   if (hostsig == SIGRETRACT)
 288     return TARGET_SIGNAL_RETRACT;
 289 #endif
 290 #if defined (SIGMSG)
 291   if (hostsig == SIGMSG)
 292     return TARGET_SIGNAL_MSG;
 293 #endif
 294 #if defined (SIGSOUND)
 295   if (hostsig == SIGSOUND)
 296     return TARGET_SIGNAL_SOUND;
 297 #endif
 298 #if defined (SIGSAK)
 299   if (hostsig == SIGSAK)
 300     return TARGET_SIGNAL_SAK;
 301 #endif
 302 #if defined (SIGPRIO)
 303   if (hostsig == SIGPRIO)
 304     return TARGET_SIGNAL_PRIO;
 305 #endif
 306
 307   /* Mach exceptions.  Assumes that the values for EXC_ are positive! */
 308 #if defined (EXC_BAD_ACCESS) && defined (_NSIG)
 309   if (hostsig == _NSIG + EXC_BAD_ACCESS)
 310     return TARGET_EXC_BAD_ACCESS;
 311 #endif
 312 #if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
 313   if (hostsig == _NSIG + EXC_BAD_INSTRUCTION)
 314     return TARGET_EXC_BAD_INSTRUCTION;
 315 #endif
 316 #if defined (EXC_ARITHMETIC) && defined (_NSIG)
 317   if (hostsig == _NSIG + EXC_ARITHMETIC)
 318     return TARGET_EXC_ARITHMETIC;
 319 #endif
 320 #if defined (EXC_EMULATION) && defined (_NSIG)
 321   if (hostsig == _NSIG + EXC_EMULATION)
 322     return TARGET_EXC_EMULATION;
 323 #endif
 324 #if defined (EXC_SOFTWARE) && defined (_NSIG)
 325   if (hostsig == _NSIG + EXC_SOFTWARE)
 326     return TARGET_EXC_SOFTWARE;
 327 #endif
 328 #if defined (EXC_BREAKPOINT) && defined (_NSIG)
 329   if (hostsig == _NSIG + EXC_BREAKPOINT)
 330     return TARGET_EXC_BREAKPOINT;
 331 #endif
 332
 333 #if defined (SIGINFO)
 334   if (hostsig == SIGINFO)
 335     return TARGET_SIGNAL_INFO;
 336 #endif
 337
 338 #if defined (REALTIME_LO)
 339   if (hostsig >= REALTIME_LO && hostsig < REALTIME_HI)
 340     {
 341       /* This block of TARGET_SIGNAL_REALTIME value is in order.  */
 342       if (33 <= hostsig && hostsig <= 63)
 343         return (enum target_signal)
 344           (hostsig - 33 + (int) TARGET_SIGNAL_REALTIME_33);
 345       else if (hostsig == 32)
 346         return TARGET_SIGNAL_REALTIME_32;
 347       else if (64 <= hostsig && hostsig <= 127)
 348         return (enum target_signal)
 349           (hostsig - 64 + (int) TARGET_SIGNAL_REALTIME_64);
 350       else
 351         error ("GDB bug: target.c (target_signal_from_host): unrecognized real-time signal");
 352     }
 353 #endif
 354
 355   return TARGET_SIGNAL_UNKNOWN;
 356 }
 357
 358 /* Convert a OURSIG (an enum target_signal) to the form used by the
 359    target operating system (refered to as the ``host'') or zero if the
 360    equivalent host signal is not available.  Set/clear OURSIG_OK
 361    accordingly. */
 362
 363 static int
 364 do_target_signal_to_host (enum target_signal oursig,
 365                           int *oursig_ok)
 366 {
 367   int retsig;
 368   /* Silence the 'not used' warning, for targets that
 369      do not support signals.  */
 370   (void) retsig;
 371
 372   *oursig_ok = 1;
 373   switch (oursig)
 374     {
 375     case TARGET_SIGNAL_0:
 376       return 0;
 377
 378 #if defined (SIGHUP)
 379     case TARGET_SIGNAL_HUP:
 380       return SIGHUP;
 381 #endif
 382 #if defined (SIGINT)
 383     case TARGET_SIGNAL_INT:
 384       return SIGINT;
 385 #endif
 386 #if defined (SIGQUIT)
 387     case TARGET_SIGNAL_QUIT:
 388       return SIGQUIT;
 389 #endif
 390 #if defined (SIGILL)
 391     case TARGET_SIGNAL_ILL:
 392       return SIGILL;
 393 #endif
 394 #if defined (SIGTRAP)
 395     case TARGET_SIGNAL_TRAP:
 396       return SIGTRAP;
 397 #endif
 398 #if defined (SIGABRT)
 399     case TARGET_SIGNAL_ABRT:
 400       return SIGABRT;
 401 #endif
 402 #if defined (SIGEMT)
 403     case TARGET_SIGNAL_EMT:
 404       return SIGEMT;
 405 #endif
 406 #if defined (SIGFPE)
 407     case TARGET_SIGNAL_FPE:
 408       return SIGFPE;
 409 #endif
 410 #if defined (SIGKILL)
 411     case TARGET_SIGNAL_KILL:
 412       return SIGKILL;
 413 #endif
 414 #if defined (SIGBUS)
 415     case TARGET_SIGNAL_BUS:
 416       return SIGBUS;
 417 #endif
 418 #if defined (SIGSEGV)
 419     case TARGET_SIGNAL_SEGV:
 420       return SIGSEGV;
 421 #endif
 422 #if defined (SIGSYS)
 423     case TARGET_SIGNAL_SYS:
 424       return SIGSYS;
 425 #endif
 426 #if defined (SIGPIPE)
 427     case TARGET_SIGNAL_PIPE:
 428       return SIGPIPE;
 429 #endif
 430 #if defined (SIGALRM)
 431     case TARGET_SIGNAL_ALRM:
 432       return SIGALRM;
 433 #endif
 434 #if defined (SIGTERM)
 435     case TARGET_SIGNAL_TERM:
 436       return SIGTERM;
 437 #endif
 438 #if defined (SIGUSR1)
 439     case TARGET_SIGNAL_USR1:
 440       return SIGUSR1;
 441 #endif
 442 #if defined (SIGUSR2)
 443     case TARGET_SIGNAL_USR2:
 444       return SIGUSR2;
 445 #endif
 446 #if defined (SIGCHLD) || defined (SIGCLD)
 447     case TARGET_SIGNAL_CHLD:
 448 #if defined (SIGCHLD)
 449       return SIGCHLD;
 450 #else
 451       return SIGCLD;
 452 #endif
 453 #endif /* SIGCLD or SIGCHLD */
 454 #if defined (SIGPWR)
 455     case TARGET_SIGNAL_PWR:
 456       return SIGPWR;
 457 #endif
 458 #if defined (SIGWINCH)
 459     case TARGET_SIGNAL_WINCH:
 460       return SIGWINCH;
 461 #endif
 462 #if defined (SIGURG)
 463     case TARGET_SIGNAL_URG:
 464       return SIGURG;
 465 #endif
 466 #if defined (SIGIO)
 467     case TARGET_SIGNAL_IO:
 468       return SIGIO;
 469 #endif
 470 #if defined (SIGPOLL)
 471     case TARGET_SIGNAL_POLL:
 472       return SIGPOLL;
 473 #endif
 474 #if defined (SIGSTOP)
 475     case TARGET_SIGNAL_STOP:
 476       return SIGSTOP;
 477 #endif
 478 #if defined (SIGTSTP)
 479     case TARGET_SIGNAL_TSTP:
 480       return SIGTSTP;
 481 #endif
 482 #if defined (SIGCONT)
 483     case TARGET_SIGNAL_CONT:
 484       return SIGCONT;
 485 #endif
 486 #if defined (SIGTTIN)
 487     case TARGET_SIGNAL_TTIN:
 488       return SIGTTIN;
 489 #endif
 490 #if defined (SIGTTOU)
 491     case TARGET_SIGNAL_TTOU:
 492       return SIGTTOU;
 493 #endif
 494 #if defined (SIGVTALRM)
 495     case TARGET_SIGNAL_VTALRM:
 496       return SIGVTALRM;
 497 #endif
 498 #if defined (SIGPROF)
 499     case TARGET_SIGNAL_PROF:
 500       return SIGPROF;
 501 #endif
 502 #if defined (SIGXCPU)
 503     case TARGET_SIGNAL_XCPU:
 504       return SIGXCPU;
 505 #endif
 506 #if defined (SIGXFSZ)
 507     case TARGET_SIGNAL_XFSZ:
 508       return SIGXFSZ;
 509 #endif
 510 #if defined (SIGWIND)
 511     case TARGET_SIGNAL_WIND:
 512       return SIGWIND;
 513 #endif
 514 #if defined (SIGPHONE)
 515     case TARGET_SIGNAL_PHONE:
 516       return SIGPHONE;
 517 #endif
 518 #if defined (SIGLOST)
 519     case TARGET_SIGNAL_LOST:
 520       return SIGLOST;
 521 #endif
 522 #if defined (SIGWAITING)
 523     case TARGET_SIGNAL_WAITING:
 524       return SIGWAITING;
 525 #endif
 526 #if defined (SIGCANCEL)
 527     case TARGET_SIGNAL_CANCEL:
 528       return SIGCANCEL;
 529 #endif
 530 #if defined (SIGLWP)
 531     case TARGET_SIGNAL_LWP:
 532       return SIGLWP;
 533 #endif
 534 #if defined (SIGDANGER)
 535     case TARGET_SIGNAL_DANGER:
 536       return SIGDANGER;
 537 #endif
 538 #if defined (SIGGRANT)
 539     case TARGET_SIGNAL_GRANT:
 540       return SIGGRANT;
 541 #endif
 542 #if defined (SIGRETRACT)
 543     case TARGET_SIGNAL_RETRACT:
 544       return SIGRETRACT;
 545 #endif
 546 #if defined (SIGMSG)
 547     case TARGET_SIGNAL_MSG:
 548       return SIGMSG;
 549 #endif
 550 #if defined (SIGSOUND)
 551     case TARGET_SIGNAL_SOUND:
 552       return SIGSOUND;
 553 #endif
 554 #if defined (SIGSAK)
 555     case TARGET_SIGNAL_SAK:
 556       return SIGSAK;
 557 #endif
 558 #if defined (SIGPRIO)
 559     case TARGET_SIGNAL_PRIO:
 560       return SIGPRIO;
 561 #endif
 562
 563       /* Mach exceptions.  Assumes that the values for EXC_ are positive! */
 564 #if defined (EXC_BAD_ACCESS) && defined (_NSIG)
 565     case TARGET_EXC_BAD_ACCESS:
 566       return _NSIG + EXC_BAD_ACCESS;
 567 #endif
 568 #if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
 569     case TARGET_EXC_BAD_INSTRUCTION:
 570       return _NSIG + EXC_BAD_INSTRUCTION;
 571 #endif
 572 #if defined (EXC_ARITHMETIC) && defined (_NSIG)
 573     case TARGET_EXC_ARITHMETIC:
 574       return _NSIG + EXC_ARITHMETIC;
 575 #endif
 576 #if defined (EXC_EMULATION) && defined (_NSIG)
 577     case TARGET_EXC_EMULATION:
 578       return _NSIG + EXC_EMULATION;
 579 #endif
 580 #if defined (EXC_SOFTWARE) && defined (_NSIG)
 581     case TARGET_EXC_SOFTWARE:
 582       return _NSIG + EXC_SOFTWARE;
 583 #endif
 584 #if defined (EXC_BREAKPOINT) && defined (_NSIG)
 585     case TARGET_EXC_BREAKPOINT:
 586       return _NSIG + EXC_BREAKPOINT;
 587 #endif
 588
 589 #if defined (SIGINFO)
 590     case TARGET_SIGNAL_INFO:
 591       return SIGINFO;
 592 #endif
 593
 594     default:
 595 #if defined (REALTIME_LO)
 596       retsig = 0;
 597
 598       if (oursig >= TARGET_SIGNAL_REALTIME_33
 599           && oursig <= TARGET_SIGNAL_REALTIME_63)
 600         {
 601           /* This block of signals is continuous, and
 602              TARGET_SIGNAL_REALTIME_33 is 33 by definition.  */
 603           retsig = (int) oursig - (int) TARGET_SIGNAL_REALTIME_33 + 33;
 604         }
 605       else if (oursig == TARGET_SIGNAL_REALTIME_32)
 606         {
 607           /* TARGET_SIGNAL_REALTIME_32 isn't contiguous with
 608              TARGET_SIGNAL_REALTIME_33.  It is 32 by definition.  */
 609           retsig = 32;
 610         }
 611       else if (oursig >= TARGET_SIGNAL_REALTIME_64
 612           && oursig <= TARGET_SIGNAL_REALTIME_127)
 613         {
 614           /* This block of signals is continuous, and
 615              TARGET_SIGNAL_REALTIME_64 is 64 by definition.  */
 616           retsig = (int) oursig - (int) TARGET_SIGNAL_REALTIME_64 + 64;
 617         }
 618
 619       if (retsig >= REALTIME_LO && retsig < REALTIME_HI)
 620         return retsig;
 621 #endif
 622
 623       *oursig_ok = 0;
 624       return 0;
 625     }
 626 }
 627
 628 int
 629 target_signal_to_host_p (enum target_signal oursig)
 630 {
 631   int oursig_ok;
 632   do_target_signal_to_host (oursig, &oursig_ok);
 633   return oursig_ok;
 634 }
 635
 636 int
 637 target_signal_to_host (enum target_signal oursig)
 638 {
 639   int oursig_ok;
 640   int targ_signo = do_target_signal_to_host (oursig, &oursig_ok);
 641   if (!oursig_ok)
 642     {
 643       /* The user might be trying to do "signal SIGSAK" where this system
 644          doesn't have SIGSAK.  */
 645       warning ("Signal %s does not exist on this system.\n",
 646                target_signal_to_name (oursig));
 647       return 0;
 648     }
 649   else
 650     return targ_signo;
 651 }
 652
 653 #ifndef GDBSERVER
 654
 655 /* In some circumstances we allow a command to specify a numeric
 656    signal.  The idea is to keep these circumstances limited so that
 657    users (and scripts) develop portable habits.  For comparison,
 658    POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a
 659    numeric signal at all is obsolescent.  We are slightly more
 660    lenient and allow 1-15 which should match host signal numbers on
 661    most systems.  Use of symbolic signal names is strongly encouraged.  */
 662
 663 enum target_signal
 664 target_signal_from_command (int num)
 665 {
 666   if (num >= 1 && num <= 15)
 667     return (enum target_signal) num;
 668   error ("Only signals 1-15 are valid as numeric signals.\n\
 669 Use \"info signals\" for a list of symbolic signals.");
 670 }
 671
 672 extern initialize_file_ftype _initialize_signals; /* -Wmissing-prototype */
 673
 674 void
 675 _initialize_signals (void)
 676 {
 677   if (strcmp (signals[TARGET_SIGNAL_LAST].string, "TARGET_SIGNAL_MAGIC") != 0)
 678     internal_error (__FILE__, __LINE__, "failed internal consistency check");
 679 }
 680
 681 int
 682 default_target_signal_to_host (struct gdbarch *gdbarch, enum target_signal ts)
 683 {
 684   return target_signal_to_host (ts);
 685 }
 686
 687 enum target_signal
 688 default_target_signal_from_host (struct gdbarch *gdbarch, int signo)
 689 {
 690   return target_signal_from_host (signo);
 691 }
 692
 693 #endif /* ! GDBSERVER */