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/* Translate Mach exception codes into signal numbers. MIPS version.
Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <hurd.h>
#include <hurd/signal.h>
#include <mach/exception.h>
/* Translate the Mach exception codes, as received in an `exception_raise' RPC,
into a signal number and signal subcode. */
void
_hurd_exception2signal (int exception, int code, int subcode,
int *signo, long int *sigcode, int *error)
{
*error = 0;
switch (exception)
{
default:
*signo = SIGIOT;
*sigcode = exception;
break;
case EXC_BAD_ACCESS:
if (code == KERN_PROTECTION_FAILURE)
*signo = SIGSEGV;
else
*signo = SIGBUS;
*sigcode = subcode;
*error = code;
break;
case EXC_BAD_INSTRUCTION:
*signo = SIGILL;
if (code == EXC_MIPS_II)
*sigcode = code;
else
*sigcode = 0;
break;
case EXC_ARITHMETIC:
switch (code)
{
case EXC_MIPS_OV: /* integer overflow */
*signo = SIGFPE;
*sigcode = EXC_MIPS_FLT_OVERFLOW;
break;
default:
*signo = SIGFPE;
*sigcode = 0;
break;
case EXC_MIPS_INT:
/* Subcode is the fp_status word saved by the hardware.
Give an error code corresponding to the first bit set. */
if (subcode == EXC_MIPS_FLT_UNIMP)
*signo = SIGILL;
else
*signo = SIGFPE;
*sigcode = subcode;
break;
}
break;
case EXC_EMULATION:
/* 3.0 doesn't give this one, why, I don't know. */
*signo = SIGEMT;
*sigcode = 0;
break;
case EXC_SOFTWARE:
*signo = SIGEMT;
*sigcode = 0;
break;
case EXC_BREAKPOINT:
*signo = SIGTRAP;
*sigcode = code;
break;
}
}
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