diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2003-01-21 16:13:55 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2003-01-21 16:13:55 +0000 |
| commit | 068a4812fc1d9e321aa65a91ceb8bc824bedc69a (patch) | |
| tree | 9d604f6e24f1fee3c047e39911589493ae48aec9 /src/mesa/x86/common_x86.c | |
| parent | 943f0c6a41aa66705ffba90a55cf75296b0bde1d (diff) | |
new X86 CPU detection code (Petr Sebor)
Diffstat (limited to 'src/mesa/x86/common_x86.c')
| -rw-r--r-- | src/mesa/x86/common_x86.c | 88 |
1 files changed, 85 insertions, 3 deletions
diff --git a/src/mesa/x86/common_x86.c b/src/mesa/x86/common_x86.c index b680cb701a..f22cd18b34 100644 --- a/src/mesa/x86/common_x86.c +++ b/src/mesa/x86/common_x86.c @@ -1,4 +1,4 @@ -/* $Id: common_x86.c,v 1.20 2002/11/13 15:03:31 brianp Exp $ */ +/* $Id: common_x86.c,v 1.21 2003/01/21 16:13:55 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -52,8 +52,14 @@ int _mesa_x86_cpu_features = 0; /* No reason for this to be public. */ -extern int _mesa_identify_x86_cpu_features( void ); +extern int _mesa_identify_x86_cpu_features(void); +extern GLuint _mesa_x86_has_cpuid(void); +extern void _mesa_x86_cpuid(GLuint op, GLuint *reg_eax, GLuint *reg_ebx, GLuint *reg_ecx, GLuint *reg_edx); +extern GLuint _mesa_x86_cpuid_eax(GLuint op); +extern GLuint _mesa_x86_cpuid_ebx(GLuint op); +extern GLuint _mesa_x86_cpuid_ecx(GLuint op); +extern GLuint _mesa_x86_cpuid_edx(GLuint op); static void message( const char *msg ) { @@ -240,8 +246,84 @@ void _mesa_init_all_x86_transform_asm( void ) { (void) message; /* silence warning */ #ifdef USE_X86_ASM - _mesa_x86_cpu_features = _mesa_identify_x86_cpu_features(); + _mesa_x86_cpu_features = 0; + if (!_mesa_x86_has_cpuid()) { + message("CPUID not detected"); + } + else { + GLuint cpu_features; + GLuint cpu_ext_features; + GLuint cpu_ext_info; + char cpu_vendor[13]; + GLuint result; + + /* get vendor name */ + _mesa_x86_cpuid(0, &result, (GLuint *)(cpu_vendor + 0), (GLuint *)(cpu_vendor + 8), (GLuint *)(cpu_vendor + 4)); + cpu_vendor[12] = '\0'; + + message("cpu vendor: "); + message(cpu_vendor); + message("\n"); + + /* get cpu features */ + cpu_features = _mesa_x86_cpuid_edx(1); + + if (cpu_features & X86_CPU_FPU) + _mesa_x86_cpu_features |= X86_FEATURE_FPU; + if (cpu_features & X86_CPU_CMOV) + _mesa_x86_cpu_features |= X86_FEATURE_CMOV; + +#ifdef USE_MMX_ASM + if (cpu_features & X86_CPU_MMX) + _mesa_x86_cpu_features |= X86_FEATURE_MMX; +#endif + +#ifdef USE_SSE_ASM + if (cpu_features & X86_CPU_XMM) + _mesa_x86_cpu_features |= X86_FEATURE_XMM; + if (cpu_features & X86_CPU_XMM2) + _mesa_x86_cpu_features |= X86_FEATURE_XMM2; +#endif + + /* query extended cpu features */ + if ((cpu_ext_info = _mesa_x86_cpuid_eax(0x80000000)) > 0x80000000) { + if (cpu_ext_info >= 0x80000001) { + + cpu_ext_features = _mesa_x86_cpuid_edx(0x80000001); + + if (cpu_features & X86_CPU_MMX) { + +#ifdef USE_3DNOW_ASM + if (cpu_ext_features & X86_CPUEXT_3DNOW) + _mesa_x86_cpu_features |= X86_FEATURE_3DNOW; + if (cpu_ext_features & X86_CPUEXT_3DNOW_EXT) + _mesa_x86_cpu_features |= X86_FEATURE_3DNOWEXT; +#endif + +#ifdef USE_MMX_ASM + if (cpu_ext_features & X86_CPUEXT_MMX_EXT) + _mesa_x86_cpu_features |= X86_FEATURE_MMXEXT; +#endif + } + } + + /* query cpu name */ + if (cpu_ext_info >= 0x80000002) { + GLuint ofs; + char cpu_name[49]; + for (ofs = 0; ofs < 3; ofs++) + _mesa_x86_cpuid(0x80000002+ofs, (GLuint *)(cpu_name + (16*ofs)+0), (GLuint *)(cpu_name + (16*ofs)+4), (GLuint *)(cpu_name + (16*ofs)+8), (GLuint *)(cpu_name + (16*ofs)+12)); + cpu_name[48] = '\0'; /* the name should be NULL terminated, but just to be sure */ + + message("cpu name: "); + message(cpu_name); + message("\n"); + } + } + + } + if ( getenv( "MESA_NO_ASM" ) ) { _mesa_x86_cpu_features = 0; } |