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ntdll: Handle SIMD exceptions.

This commit is contained in:
Peter Beutner 2007-03-08 22:48:14 +01:00 committed by Alexandre Julliard
parent f09f9ef5e1
commit 4a831ec716
1 changed files with 15 additions and 1 deletions
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16
dlls/ntdll/signal_i386.c
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@ -324,7 +324,8 @@ enum i386_trap_code
TRAP_x86_ARITHTRAP = 16, /* Floating point exception */
TRAP_x86_ALIGNFLT = 17, /* Alignment check exception */
TRAP_x86_MCHK = 18, /* Machine check exception */
TRAP_x86_CACHEFLT = 19 /* Cache flush exception */
TRAP_x86_CACHEFLT = 19 /* SIMD exception (via SIGFPE) if CPU is SSE capable
otherwise Cache flush exception (via SIGSEV) */
#endif
};
@ -1210,6 +1211,19 @@ static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
case TRAP_x86_UNKNOWN: /* Unknown fault code */
rec->ExceptionCode = get_fpu_code( win_context );
break;
case TRAP_x86_CACHEFLT: /* SIMD exception */
/* TODO:
* Behaviour only tested for divide-by-zero exceptions
* Check for other SIMD exceptions as well */
if(siginfo->si_code != FPE_FLTDIV)
FIXME("untested SIMD exception: %#x. Might not work correctly\n",
siginfo->si_code);
rec->ExceptionCode = STATUS_FLOAT_MULTIPLE_TRAPS;
rec->NumberParameters = 1;
/* no idea what meaning is actually behind this but thats what native does */
rec->ExceptionInformation[0] = 0;
break;
default:
ERR( "Got unexpected trap %d\n", get_trap_code(context) );
rec->ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;