98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/* Translate Mach exception codes into signal numbers. MIPS version.
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Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <hurd.h>
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#include <hurd/signal.h>
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#include <mach/exception.h>
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/* Translate the Mach exception codes, as received in an `exception_raise' RPC,
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into a signal number and signal subcode. */
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void
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_hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
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{
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detail->error = 0;
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switch (detail->exc)
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{
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default:
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*signo = SIGIOT;
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detail->code = detail->exc;
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break;
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case EXC_BAD_ACCESS:
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if (detail->exc_code == KERN_PROTECTION_FAILURE)
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*signo = SIGSEGV;
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else
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*signo = SIGBUS;
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detail->code = detail->exc_subcode;
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detail->error = detail->exc_code;
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break;
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case EXC_BAD_INSTRUCTION:
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*signo = SIGILL;
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if (detail->exc_code == EXC_MIPS_II)
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detail->code = detail->exc_subcode;
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else
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detail->code = 0;
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break;
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case EXC_ARITHMETIC:
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switch (detail->exc_code)
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{
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case EXC_MIPS_OV: /* integer overflow */
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*signo = SIGFPE;
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detail->code = detail->exc_subcode;
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break;
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default:
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*signo = SIGFPE;
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detail->code = 0;
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break;
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case EXC_MIPS_INT:
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/* Subcode is the fp_status word saved by the hardware.
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Give an error code corresponding to the first bit set. */
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if (detail->exc_subcode == EXC_MIPS_FLT_UNIMP)
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*signo = SIGILL;
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else
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*signo = SIGFPE;
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detail->code = detail->exc_subcode;
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break;
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}
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break;
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case EXC_EMULATION:
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/* 3.0 doesn't give this one, why, I don't know. */
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*signo = SIGEMT;
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detail->code = 0;
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break;
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case EXC_SOFTWARE:
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*signo = SIGEMT;
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detail->code = 0;
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break;
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case EXC_BREAKPOINT:
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*signo = SIGTRAP;
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detail->code = 0;
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break;
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}
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}
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