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mesa/x86: add SSE4.1 runtime detection.

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Add a bit to _mesa_x86_features for SSE 4.1, along with macros to query.

Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Matt Atwood
2014-05-02 09:44:44 -07:00
committed by Matt Turner
parent 8b9302f2b4
commit a2fb71e23b
2 changed files with 10 additions and 0 deletions
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6
src/mesa/x86/common_x86.c
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@@ -241,6 +241,7 @@ _mesa_get_x86_features(void)
/* get cpu features */
cpu_features = _mesa_x86_cpuid_edx(1);
cpu_features_ecx = _mesa_x86_cpuid_ecx(1);
if (cpu_features & X86_CPU_FPU)
_mesa_x86_cpu_features |= X86_FEATURE_FPU;
@@ -257,6 +258,8 @@ _mesa_get_x86_features(void)
_mesa_x86_cpu_features |= X86_FEATURE_XMM;
if (cpu_features & X86_CPU_XMM2)
_mesa_x86_cpu_features |= X86_FEATURE_XMM2;
if (cpu_features & x86_CPU_SSE4_1)
_mesa_x86_features |= X86_FEATURE_SSE4_1;
#endif
/* query extended cpu features */
@@ -341,6 +344,9 @@ _mesa_get_x86_features(void)
_mesa_x86_cpu_features |= X86_FEATURE_XMM | X86_FEATURE_XMM2;
__get_cpuid(1, &eax, &ebx, &ecx, &edx);
if (ecx & bit_SSE4_1)
_mesa_x86_cpu_features |= X86_FEATURE_SSE4_1;
#endif /* USE_X86_ASM */
(void) detection_debug;

4
src/mesa/x86/common_x86_features.h
View File

@@ -43,6 +43,7 @@
#define X86_FEATURE_XMM2 (1<<6)
#define X86_FEATURE_3DNOWEXT (1<<7)
#define X86_FEATURE_3DNOW (1<<8)
#define X86_FEATURE_SSE4_1 (1<<9)
/* standard X86 CPU features */
#define X86_CPU_FPU (1<<0)
@@ -50,6 +51,8 @@
#define X86_CPU_MMX (1<<23)
#define X86_CPU_XMM (1<<25)
#define X86_CPU_XMM2 (1<<26)
/* ECX. */
#define X86_CPU_SSE4_1 (1<<19)
/* extended X86 CPU features */
#define X86_CPUEXT_MMX_EXT (1<<22)
@@ -62,6 +65,7 @@
#define cpu_has_xmm2 (_mesa_x86_cpu_features & X86_FEATURE_XMM2)
#define cpu_has_3dnow (_mesa_x86_cpu_features & X86_FEATURE_3DNOW)
#define cpu_has_3dnowext (_mesa_x86_cpu_features & X86_FEATURE_3DNOWEXT)
#define cpu_has_sse4_1 (_mesa_x86_cpu_features & X86_FEATURE_SSE4_1)
#endif