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-rw-r--r--src/mesa/x86/common_x86.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/src/mesa/x86/common_x86.c b/src/mesa/x86/common_x86.c
index b3e1401b8a..d5b87e8156 100644
--- a/src/mesa/x86/common_x86.c
+++ b/src/mesa/x86/common_x86.c
@@ -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.
*/