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Windows/ReactOS patch (Gregor Anich)

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This commit is contained in:
Brian Paul 2005-01-10 16:23:21 +00:00
parent 574f3c7daf
commit eaf2b170ff
1 changed files with 69 additions and 0 deletions
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69
src/mesa/x86/common_x86.c
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@ -142,6 +142,37 @@ static void sigfpe_handler( int signal, struct sigcontext sc )
}
#endif /* __linux__ && _POSIX_SOURCE && X86_FXSR_MAGIC */
#if defined(WIN32)
#ifndef STATUS_FLOAT_MULTIPLE_TRAPS
# define STATUS_FLOAT_MULTIPLE_TRAPS (0xC00002B5L)
#endif
static LONG WINAPI ExceptionFilter(LPEXCEPTION_POINTERS exp)
{
PEXCEPTION_RECORD rec = exp->ExceptionRecord;
PCONTEXT ctx = exp->ContextRecord;
if ( rec->ExceptionCode == EXCEPTION_ILLEGAL_INSTRUCTION ) {
message( "EXCEPTION_ILLEGAL_INSTRUCTION, " );
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
} else if ( rec->ExceptionCode == STATUS_FLOAT_MULTIPLE_TRAPS ) {
message( "STATUS_FLOAT_MULTIPLE_TRAPS, " );
/* Windows seems to clear the exception flag itself, we just have to increment Eip */
} else {
message( "UNEXPECTED EXCEPTION (0x%08x), terminating!" );
return EXCEPTION_EXECUTE_HANDLER;
}
if ( (ctx->ContextFlags & CONTEXT_CONTROL) != CONTEXT_CONTROL ) {
message( "Context does not contain control registers, terminating!" );
return EXCEPTION_EXECUTE_HANDLER;
}
ctx->Eip += 3;
return EXCEPTION_CONTINUE_EXECUTION;
}
#endif /* WIN32 */
/* If we're running on a processor that can do SSE, let's see if we
* are allowed to or not. This will catch 2.4.0 or later kernels that
* haven't been configured for a Pentium III but are running on one,
@ -237,6 +268,44 @@ static void check_os_sse_support( void )
if (ret || !enabled)
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
}
#elif defined(WIN32)
LPTOP_LEVEL_EXCEPTION_FILTER oldFilter;
/* Install our ExceptionFilter */
oldFilter = SetUnhandledExceptionFilter( ExceptionFilter );
if ( cpu_has_xmm ) {
message( "Testing OS support for SSE... " );
_mesa_test_os_sse_support();
if ( cpu_has_xmm ) {
message( "yes.\n" );
} else {
message( "no!\n" );
}
}
if ( cpu_has_xmm ) {
message( "Testing OS support for SSE unmasked exceptions... " );
_mesa_test_os_sse_exception_support();
if ( cpu_has_xmm ) {
message( "yes.\n" );
} else {
message( "no!\n" );
}
}
/* Restore previous exception filter */
SetUnhandledExceptionFilter( oldFilter );
if ( cpu_has_xmm ) {
message( "Tests of OS support for SSE passed.\n" );
} else {
message( "Tests of OS support for SSE failed!\n" );
}
#else
/* Do nothing on other platforms for now.
*/