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use __try/__except mechanism for win32 to catch SSE sigillegal in win95

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koolsmoky
2003-07-24 13:13:03 +00:00
parent 285b967be2
commit babd8326bd
1 changed files with 24 additions and 1 deletions
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25
glide3x/h5/glide3/src/cpuid.c
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@@ -3,6 +3,9 @@
*
* $Header$
* $Log$
* Revision 1.1.2.5 2003/07/01 11:16:42 dborca
* fixed a bug in GNUC code when running Intel; also removed detritus
*
* Revision 1.1.2.3 2003/06/13 07:22:58 dborca
* more fixes to NASM sources
*
@@ -58,7 +61,7 @@ typedef unsigned long word32;
#endif
#ifndef __WIN32__
static jmp_buf j;
@@ -107,6 +110,7 @@ static int check_feature (int feature)
return feature;
}
}
#endif
@@ -119,6 +123,7 @@ static int check_feature (int feature)
*/
static int has_feature (int feature)
{
#ifndef __WIN32__
int rv;
/* register signal handlers */
@@ -129,6 +134,24 @@ static int has_feature (int feature)
/* restore the signal handlers */
signal(SIGILL, old_sigill);
return rv;
#else
/* Use the non-standard __try/__except mechanism because win95 fails to catch
* sigillegal for SSE using standard signal mechanism.
*/
#define _TRY() __try {
#define _EXCEPTION() } __except(1) { return 0; } /* EXCEPTION_EXECUTE_HANDLER=1 */
switch (feature) {
case _CPU_HAS_CPUID: _TRY() TEST_CPUID(0) _EXCEPTION() break;
case _CPU_FEATURE_SSE: _TRY() TEST_SSE() _EXCEPTION() break;
case _CPU_FEATURE_SSE2: _TRY() TEST_SSE2() _EXCEPTION() break;
case _CPU_FEATURE_3DNOW: _TRY() TEST_3DNOW() _EXCEPTION() break;
case _CPU_FEATURE_MMX: _TRY() TEST_MMX() _EXCEPTION() break;
case _CPU_FEATURE_3DNOWPLUS: _TRY() TEST_3DNOWPLUS() _EXCEPTION() break;
case _CPU_FEATURE_MMXPLUS: _TRY() TEST_MMXPLUS() _EXCEPTION() break;
default: return 0;
}
return feature;
#endif
}