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glibc  2.9
exc2signal.c
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00001 /* Translate Mach exception codes into signal numbers.  Alpha version.
00002    Copyright (C) 1994,97,2002 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <hurd.h>
00021 #include <hurd/signal.h>
00022 #include <mach/exception.h>
00023 
00024 /* Translate the Mach exception codes, as received in an `exception_raise' RPC,
00025    into a signal number and signal subcode.  */
00026 
00027 void
00028 _hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
00029 {
00030   detail->error = 0;
00031 
00032   switch (detail->exc)
00033     {
00034     default:
00035       *signo = SIGIOT;
00036       detail->code = detail->exc;
00037       break;
00038 
00039     case EXC_BAD_ACCESS:
00040       if (detail->exc_code == KERN_PROTECTION_FAILURE)
00041        *signo = SIGSEGV;
00042       else
00043        *signo = SIGBUS;
00044       detail->code = detail->exc_subcode;
00045       detail->error = detail->exc_code;
00046       break;
00047 
00048     case EXC_BAD_INSTRUCTION:
00049       *signo = SIGILL;
00050       detail->code = detail->exc_code;
00051       break;
00052 
00053     case EXC_ARITHMETIC:
00054       *signo = SIGFPE;
00055       detail->code = detail->exc_code;
00056       break;
00057       break;
00058 
00059     case EXC_EMULATION:
00060       /* 3.0 doesn't give this one, why, I don't know.  */
00061       *signo = SIGEMT;
00062       detail->code = detail->exc_code;
00063       break;
00064 
00065     case EXC_SOFTWARE:
00066       *signo = SIGEMT;
00067       detail->code = detail->exc_code;
00068       break;
00069 
00070     case EXC_BREAKPOINT:
00071       *signo = SIGTRAP;
00072       detail->code = detail->exc_code;
00073       break;
00074     }
00075 }