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  1. /* Target signal numbers for GDB and the GDB remote protocol.
  2.    Copyright (C) 1986-2015 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 3 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, see <http://www.gnu.org/licenses/>.  */
  18.  
  19. #ifndef GDB_SIGNALS_H
  20. #define GDB_SIGNALS_H
  21.  
  22. /* The numbering of these signals is chosen to match traditional unix
  23.    signals (insofar as various unices use the same numbers, anyway).
  24.    It is also the numbering of the GDB remote protocol.  Other remote
  25.    protocols, if they use a different numbering, should make sure to
  26.    translate appropriately.
  27.  
  28.    Since these numbers have actually made it out into other software
  29.    (stubs, etc.), you mustn't disturb the assigned numbering.  If you
  30.    need to add new signals here, add them to the end of the explicitly
  31.    numbered signals, at the comment marker.  Add them unconditionally,
  32.    not within any #if or #ifdef.
  33.  
  34.    This is based strongly on Unix/POSIX signals for several reasons:
  35.    (1) This set of signals represents a widely-accepted attempt to
  36.    represent events of this sort in a portable fashion, (2) we want a
  37.    signal to make it from wait to child_wait to the user intact, (3) many
  38.    remote protocols use a similar encoding.  However, it is
  39.    recognized that this set of signals has limitations (such as not
  40.    distinguishing between various kinds of SIGSEGV, or not
  41.    distinguishing hitting a breakpoint from finishing a single step).
  42.    So in the future we may get around this either by adding additional
  43.    signals for breakpoint, single-step, etc., or by adding signal
  44.    codes; the latter seems more in the spirit of what BSD, System V,
  45.    etc. are doing to address these issues.  */
  46.  
  47. /* For an explanation of what each signal means, see
  48.    gdb_signal_to_string.  */
  49.  
  50. enum gdb_signal
  51.   {
  52. #define SET(symbol, constant, name, string) \
  53.     symbol = constant,
  54. #include "gdb/signals.def"
  55. #undef SET
  56.   };
  57.  
  58. #endif /* #ifndef GDB_SIGNALS_H */
  59.