hurd/exc2signal.c

   1 /* Translate Mach exception codes into signal numbers.  Stub version.
   2    Copyright (C) 1991, 1992, 1994, 1995, 1997 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 Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <hurd.h>
  21
  22 /* This file must be modified with machine-dependent details.  */
  23 #error "need to write sysdeps/mach/hurd/MACHINE/exc2signal.c"
  24
  25 /* Translate the Mach exception codes, as received in an `exception_raise' RPC,
  26    into a signal number and signal subcode.  */
  27
  28 void
  29 _hurd_exception2signal (int exception, int code, int subcode,
  30                         int *signo, int *sigcode, int *error)
  31 {
  32   *error = 0;
  33
  34   switch (exception)
  35     {
  36     default:
  37       *signo = SIGIOT;
  38       *sigcode = exception;
  39       break;
  40
  41     case EXC_BAD_ACCESS:
  42       if (code == KERN_PROTECTION_FAILURE)
  43         *signo = SIGSEGV;
  44       else
  45         *signo = SIGBUS;
  46       *sigcode = subcode;
  47       *error = code;
  48       break;
  49
  50     case EXC_BAD_INSTRUCTION:
  51       *signo = SIGILL;
  52       *sigcode = 0;
  53       break;
  54
  55     case EXC_ARITHMETIC:
  56       *signo = SIGFPE;
  57       *sigcode = 0;
  58       break;
  59
  60     case EXC_EMULATION:
  61     case EXC_SOFTWARE:
  62       *signo = SIGEMT;
  63       *sigcode = 0;
  64       break;
  65
  66     case EXC_BREAKPOINT:
  67       *signo = SIGTRAP;
  68       *sigcode = 0;
  69       break;
  70     }
  71 }