diff options
Diffstat (limited to 'sysdeps/mach/hurd/mips/exc2signal.c')
-rw-r--r-- | sysdeps/mach/hurd/mips/exc2signal.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/mips/exc2signal.c b/sysdeps/mach/hurd/mips/exc2signal.c new file mode 100644 index 0000000..f907c89 --- /dev/null +++ b/sysdeps/mach/hurd/mips/exc2signal.c @@ -0,0 +1,98 @@ +/* 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; + } +} |