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applied Eric Anholt's patch for Athlon SSE

This commit is contained in:
Brian Paul 2002-07-11 15:33:02 +00:00
parent 8eaffa2a1c
commit 902d2faadf
2 changed files with 28 additions and 3 deletions
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16
src/mesa/x86/common_x86.c
View File

@ -1,4 +1,4 @@
/* $Id: common_x86.c,v 1.18 2002/06/29 19:48:17 brianp Exp $ */
/* $Id: common_x86.c,v 1.19 2002/07/11 15:33:02 brianp Exp $ */
/*
* Mesa 3-D graphics library
@ -38,6 +38,10 @@
#if defined(USE_SSE_ASM) && defined(__linux__)
#include <signal.h>
#endif
#if defined(USE_SSE_ASM) && defined(__FreeBSD__)
#include <sys/types.h>
#include <sys/sysctl.h>
#endif
#include "context.h"
#include "common_x86_asm.h"
@ -213,8 +217,16 @@ static void check_os_sse_support( void )
message( "Cannot test OS support for SSE, disabling to be safe.\n" );
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
#endif /* _POSIX_SOURCE && X86_FXSR_MAGIC */
#elif defined(__FreeBSD__)
{
int ret, len, enabled;
len = sizeof(enabled);
ret = sysctlbyname("hw.instruction_sse", &enabled, &len, NULL, 0);
if (ret || !enabled)
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
}
#else
/* Do nothing on non-Linux platforms for now.
/* Do nothing on other platforms for now.
*/
message( "Not testing OS support for SSE, leaving enabled.\n" );
#endif /* __linux__ */

15
src/mesa/x86/common_x86_asm.S
View File

@ -1,4 +1,4 @@
/* $Id: common_x86_asm.S,v 1.10 2002/06/11 01:26:58 brianp Exp $ */
/* $Id: common_x86_asm.S,v 1.11 2002/07/11 15:33:02 brianp Exp $ */
/*
* Mesa 3-D graphics library
@ -129,6 +129,15 @@ LLBL(cpuid_amd):
* information after we verify that the extended functions are
* supported.
*/
/* The features we need are almost all in the extended set. The
* exception is SSE enable, which is in the standard set (0x1).
*/
MOV_L ( CONST(0x1), EAX )
CPUID
TEST_L ( EAX, EAX )
JZ ( LLBL (cpuid_failed) )
MOV_L ( EDX, ESI )
MOV_L ( CONST(0x80000000), EAX )
CPUID
TEST_L ( EAX, EAX )
@ -137,6 +146,10 @@ LLBL(cpuid_amd):
MOV_L ( CONST(0x80000001), EAX )
CPUID
MOV_L ( EDX, EAX )
AND_L ( CONST(0x02000000), ESI ) /* OR in the SSE bit */
OR_L ( ESI, EAX )
JMP ( LLBL (cpuid_done) )
LLBL(cpuid_other):