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Eliminate the funky SSE exception test from DRI builds. It's not need

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(see the comment in the code), and it's just annoying.
This commit is contained in:
Ian Romanick
2004-10-13 17:29:33 +00:00
parent 612d5f6e84
commit 81f67fc4e9
1 changed files with 16 additions and 6 deletions
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22
src/mesa/x86/common_x86.c
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@@ -22,13 +22,16 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
/**
* \file common_x86.c
*
* Check CPU capabilities & initialize optimized funtions for this particular
* processor.
*
* Written by Holger Waechtler <holger@akaflieg.extern.tu-berlin.de>
* Changed by Andre Werthmann <wertmann@cs.uni-potsdam.de> for using the
* new SSE functions.
* Changed by Andre Werthmann for using the new SSE functions.
*
* \author Holger Waechtler <holger@akaflieg.extern.tu-berlin.de>
* \author Andre Werthmann <wertmann@cs.uni-potsdam.de>
*/
/* XXX these includes should probably go into imports.h or glheader.h */
@@ -87,12 +90,19 @@ static void message( const char *msg )
* loop in the signal delivery from the kernel as we can't interact with
* the SIMD FPU state to clear the exception bits. Either way, this is
* not good.
*
* However, I have been told by Alan Cox that all 2.4 (and later) Linux
* kernels provide full SSE support on all processors that expose SSE via
* the CPUID mechanism. It just so happens that this is the exact set of
* kernels supported DRI. Therefore, when building for DRI the funky SSE
* exception test is omitted.
*/
extern void _mesa_test_os_sse_support( void );
extern void _mesa_test_os_sse_exception_support( void );
#if defined(__linux__) && defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC)
#if defined(__linux__) && defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC) \
&& !defined(DRI_NEW_INTERFACE_ONLY)
static void sigill_handler( int signal, struct sigcontext sc )
{
message( "SIGILL, " );
@@ -142,7 +152,7 @@ static void sigfpe_handler( int signal, struct sigcontext sc )
*/
static void check_os_sse_support( void )
{
#if defined(__linux__)
#if defined(__linux__) && !defined(DRI_NEW_INTERFACE_ONLY)
#if defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC)
struct sigaction saved_sigill;
struct sigaction saved_sigfpe;