diff options
Diffstat (limited to 'sysdeps/mach/hurd/mips/exc2signal.c')
-rw-r--r-- | sysdeps/mach/hurd/mips/exc2signal.c | 97 |
1 files changed, 97 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..c505ae5 --- /dev/null +++ b/sysdeps/mach/hurd/mips/exc2signal.c @@ -0,0 +1,97 @@ +/* Translate Mach exception codes into signal numbers. MIPS version. + Copyright (C) 1996, 1997 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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 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 (struct hurd_signal_detail *detail, int *signo) +{ + detail->error = 0; + + switch (detail->exc) + { + default: + *signo = SIGIOT; + detail->code = detail->exc; + break; + + case EXC_BAD_ACCESS: + if (detail->exc_code == KERN_PROTECTION_FAILURE) + *signo = SIGSEGV; + else + *signo = SIGBUS; + detail->code = detail->exc_subcode; + detail->error = detail->exc_code; + break; + + case EXC_BAD_INSTRUCTION: + *signo = SIGILL; + if (detail->exc_code == EXC_MIPS_II) + detail->code = detail->exc_subcode; + else + detail->code = 0; + break; + + case EXC_ARITHMETIC: + switch (detail->exc_code) + { + case EXC_MIPS_OV: /* integer overflow */ + *signo = SIGFPE; + detail->code = detail->exc_subcode; + break; + + default: + *signo = SIGFPE; + detail->code = 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 (detail->exc_subcode == EXC_MIPS_FLT_UNIMP) + *signo = SIGILL; + else + *signo = SIGFPE; + detail->code = detail->exc_subcode; + break; + } + break; + + case EXC_EMULATION: + /* 3.0 doesn't give this one, why, I don't know. */ + *signo = SIGEMT; + detail->code = 0; + break; + + case EXC_SOFTWARE: + *signo = SIGEMT; + detail->code = 0; + break; + + case EXC_BREAKPOINT: + *signo = SIGTRAP; + detail->code = 0; + break; + } +} |