sysdeps/stub/exc2signal.c

   1 /* Translate Mach exception codes into signal numbers.  Stub version.
   2 Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
   3 This file is part of the GNU C Library.
   4
   5 The GNU C Library is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU Library General Public License as
   7 published by the Free Software Foundation; either version 2 of the
   8 License, or (at your option) any later version.
   9
  10 The GNU C Library is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 Library General Public License for more details.
  14
  15 You should have received a copy of the GNU Library General Public
  16 License along with the GNU C Library; see the file COPYING.LIB.  If
  17 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  18 Cambridge, MA 02139, USA.  */
  19
  20 #include <hurd.h>
  21
  22 /* Translate the Mach exception codes, as received in an `exception_raise' RPC,
  23    into a signal number and signal subcode.  */
  24
  25 void
  26 _hurd_exception2signal (int exception, int code, int subcode,
  27                         int *signo, int *sigcode, int *error)
  28 {
  29   *error = 0;
  30
  31   switch (exception)
  32     {
  33     default:
  34       *signo = SIGIOT;
  35       *sigcode = exception;
  36       break;
  37
  38     case EXC_BAD_ACCESS:
  39       if (code == KERN_PROTECTION_FAILURE)
  40         *signo = SIGSEGV;
  41       else
  42         *signo = SIGBUS;
  43       *sigcode = subcode;
  44       *error = code;
  45       break;
  46
  47     case EXC_BAD_INSTRUCTION:
  48       *signo = SIGILL;
  49       *sigcode = 0;
  50       break;
  51
  52     case EXC_ARITHMETIC:
  53       *signo = SIGFPE;
  54       *sigcode = 0;
  55       break;
  56
  57     case EXC_EMULATION:
  58     case EXC_SOFTWARE:
  59       *signo = SIGEMT;
  60       *sigcode = 0;
  61       break;
  62
  63     case EXC_BREAKPOINT:
  64       *signo = SIGTRAP;
  65       *sigcode = 0;
  66       break;
  67     }
  68 }