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Add SSE detection.

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svn path=/trunk/; revision=11589
This commit is contained in:
Gregor Anich 2004-11-07 23:03:43 +00:00
parent 5879eeb98a
commit 2a5fa312ec
2 changed files with 69 additions and 2 deletions
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3
reactos/lib/mesa32/Makefile
View file

@ -1,6 +1,5 @@
# configuration
MESA_HAVE_X86 = 1
#MESA_OPTFLAGS = -msse
MESA_INCLUDE_DIRS = \
-Iinclude \
@ -226,7 +225,7 @@ MESA_CFLAGS += -DBUILD_GL32 -D_OPENGL32_ -DSTDCALL_API -DUSE_MGL_NAMESPACE
ifeq ($(MESA_HAVE_X86),1)
MESA_CFLAGS += -DUSE_X86_ASM
MESA_CFLAGS += -DUSE_MMX_ASM
# MESA_CFLAGS += -DUSE_SSE_ASM
MESA_CFLAGS += -DUSE_SSE_ASM
MESA_CFLAGS += -DUSE_3DNOW_ASM
MESA_X86_OBJECTS += $(MESA_X86_API_OBJECTS)
else

68
reactos/lib/mesa32/src/x86/common_x86.c
View file

@ -132,6 +132,36 @@ 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,
@ -226,6 +256,44 @@ 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.
*/