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[MESA]

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- Use PSEH to test and catch SSE exceptions
#CORE-7727 Problem with software implementation is fixed with r61545. Investigating on vmware driver support.

svn path=/trunk/; revision=61545
This commit is contained in:
Jérôme Gardou 2014-01-06 18:39:42 +00:00
parent 9f55f7097f
commit 064fb6f84b
1 changed files with 43 additions and 62 deletions
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105
reactos/dll/opengl/mesa/x86/common_x86.c
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@ -51,6 +51,8 @@
#include "main/imports.h"
#include "common_x86_asm.h"
#include <pseh/pseh2.h>
/** Bitmask of X86_FEATURE_x bits */
int _mesa_x86_cpu_features = 0x0;
@ -82,37 +84,6 @@ extern void _mesa_test_os_sse_support( void );
extern void _mesa_test_os_sse_exception_support( void );
#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 ) {
_mesa_debug(NULL, "EXCEPTION_ILLEGAL_INSTRUCTION\n" );
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
} else if ( rec->ExceptionCode == STATUS_FLOAT_MULTIPLE_TRAPS ) {
_mesa_debug(NULL, "STATUS_FLOAT_MULTIPLE_TRAPS\n");
/* Windows seems to clear the exception flag itself, we just have to increment Eip */
} else {
_mesa_debug(NULL, "UNEXPECTED EXCEPTION (0x%08x), terminating!\n" );
return EXCEPTION_EXECUTE_HANDLER;
}
if ( (ctx->ContextFlags & CONTEXT_CONTROL) != CONTEXT_CONTROL ) {
_mesa_debug(NULL, "Context does not contain control registers, terminating!\n");
return EXCEPTION_EXECUTE_HANDLER;
}
ctx->Eip += 3;
return EXCEPTION_CONTINUE_EXECUTION;
}
#endif /* WIN32 */
/**
* Check if SSE is supported.
* If not, turn off the X86_FEATURE_XMM flag in _mesa_x86_cpu_features.
@ -150,43 +121,53 @@ void _mesa_check_os_sse_support( void )
_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 ) {
_mesa_debug(NULL, "Testing OS support for SSE...\n");
if ( cpu_has_xmm ) {
_mesa_debug(NULL, "Testing OS support for SSE...\n");
_mesa_test_os_sse_support();
_SEH2_TRY
{
_mesa_test_os_sse_support();
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
if(_SEH2_GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION)
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
}
_SEH2_END;
if ( cpu_has_xmm ) {
_mesa_debug(NULL, "Yes.\n");
} else {
_mesa_debug(NULL, "No!\n");
}
}
if ( cpu_has_xmm ) {
_mesa_debug(NULL, "Yes.\n");
} else {
_mesa_debug(NULL, "No!\n");
}
}
if ( cpu_has_xmm ) {
_mesa_debug(NULL, "Testing OS support for SSE unmasked exceptions...\n");
if ( cpu_has_xmm ) {
_mesa_debug(NULL, "Testing OS support for SSE unmasked exceptions...\n");
_mesa_test_os_sse_exception_support();
_SEH2_TRY
{
_mesa_test_os_sse_exception_support();
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
if(_SEH2_GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION)
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
}
_SEH2_END;
if ( cpu_has_xmm ) {
_mesa_debug(NULL, "Yes.\n");
} else {
_mesa_debug(NULL, "No!\n");
}
}
if ( cpu_has_xmm ) {
_mesa_debug(NULL, "Yes.\n");
} else {
_mesa_debug(NULL, "No!\n");
}
}
/* Restore previous exception filter */
SetUnhandledExceptionFilter( oldFilter );
if ( cpu_has_xmm ) {
_mesa_debug(NULL, "Tests of OS support for SSE passed.\n");
} else {
_mesa_debug(NULL, "Tests of OS support for SSE failed!\n");
}
if ( cpu_has_xmm ) {
_mesa_debug(NULL, "Tests of OS support for SSE passed.\n");
} else {
_mesa_debug(NULL, "Tests of OS support for SSE failed!\n");
}
#else
/* Do nothing on other platforms for now.
*/