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x86: keep the cpu flags local

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This commit is contained in:
Wim Taymans 2009-08-19 19:50:42 +02:00
parent 370016c0e7
commit 078bde1b49
1 changed files with 27 additions and 30 deletions
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57
src/pulsecore/cpu-x86.c
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@ -45,12 +45,11 @@ get_cpuid (uint32_t op, uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d)
}
#endif
static pa_cpu_x86_flag_t pa_cpu_x86_flags;
void pa_cpu_init_x86 (void) {
#if defined (__i386__) || defined (__amd64__)
uint32_t eax, ebx, ecx, edx;
uint32_t level;
pa_cpu_x86_flag_t flags = 0;
/* get standard level */
get_cpuid (0x00000000, &level, &ebx, &ecx, &edx);
@ -58,25 +57,25 @@ void pa_cpu_init_x86 (void) {
get_cpuid (0x00000001, &eax, &ebx, &ecx, &edx);
if (edx & (1<<23))
pa_cpu_x86_flags |= PA_CPU_X86_MMX;
flags |= PA_CPU_X86_MMX;
if (edx & (1<<25))
pa_cpu_x86_flags |= PA_CPU_X86_SSE;
flags |= PA_CPU_X86_SSE;
if (edx & (1<<26))
pa_cpu_x86_flags |= PA_CPU_X86_SSE2;
flags |= PA_CPU_X86_SSE2;
if (ecx & (1<<0))
pa_cpu_x86_flags |= PA_CPU_X86_SSE3;
flags |= PA_CPU_X86_SSE3;
if (ecx & (1<<9))
pa_cpu_x86_flags |= PA_CPU_X86_SSSE3;
flags |= PA_CPU_X86_SSSE3;
if (ecx & (1<<19))
pa_cpu_x86_flags |= PA_CPU_X86_SSE4_1;
flags |= PA_CPU_X86_SSE4_1;
if (ecx & (1<<20))
pa_cpu_x86_flags |= PA_CPU_X86_SSE4_2;
flags |= PA_CPU_X86_SSE4_2;
}
/* get extended level */
@ -85,38 +84,36 @@ void pa_cpu_init_x86 (void) {
get_cpuid (0x80000001, &eax, &ebx, &ecx, &edx);
if (edx & (1<<22))
pa_cpu_x86_flags |= PA_CPU_X86_MMXEXT;
flags |= PA_CPU_X86_MMXEXT;
if (edx & (1<<23))
pa_cpu_x86_flags |= PA_CPU_X86_MMX;
flags |= PA_CPU_X86_MMX;
if (edx & (1<<30))
pa_cpu_x86_flags |= PA_CPU_X86_3DNOWEXT;
flags |= PA_CPU_X86_3DNOWEXT;
if (edx & (1<<31))
pa_cpu_x86_flags |= PA_CPU_X86_3DNOW;
flags |= PA_CPU_X86_3DNOW;
}
pa_log_info ("CPU flags: %s%s%s%s%s%s%s%s%s%s",
(pa_cpu_x86_flags & PA_CPU_X86_MMX) ? "MMX " : "",
(pa_cpu_x86_flags & PA_CPU_X86_SSE) ? "SSE " : "",
(pa_cpu_x86_flags & PA_CPU_X86_SSE2) ? "SSE2 " : "",
(pa_cpu_x86_flags & PA_CPU_X86_SSE3) ? "SSE3 " : "",
(pa_cpu_x86_flags & PA_CPU_X86_SSSE3) ? "SSSE3 " : "",
(pa_cpu_x86_flags & PA_CPU_X86_SSE4_1) ? "SSE4_1 " : "",
(pa_cpu_x86_flags & PA_CPU_X86_SSE4_2) ? "SSE4_2 " : "",
(pa_cpu_x86_flags & PA_CPU_X86_MMXEXT) ? "MMXEXT " : "",
(pa_cpu_x86_flags & PA_CPU_X86_3DNOW) ? "3DNOW " : "",
(pa_cpu_x86_flags & PA_CPU_X86_3DNOWEXT) ? "3DNOWEXT " : "");
(flags & PA_CPU_X86_MMX) ? "MMX " : "",
(flags & PA_CPU_X86_SSE) ? "SSE " : "",
(flags & PA_CPU_X86_SSE2) ? "SSE2 " : "",
(flags & PA_CPU_X86_SSE3) ? "SSE3 " : "",
(flags & PA_CPU_X86_SSSE3) ? "SSSE3 " : "",
(flags & PA_CPU_X86_SSE4_1) ? "SSE4_1 " : "",
(flags & PA_CPU_X86_SSE4_2) ? "SSE4_2 " : "",
(flags & PA_CPU_X86_MMXEXT) ? "MMXEXT " : "",
(flags & PA_CPU_X86_3DNOW) ? "3DNOW " : "",
(flags & PA_CPU_X86_3DNOWEXT) ? "3DNOWEXT " : "");
/* activate various optimisations */
if (pa_cpu_x86_flags & PA_CPU_X86_MMX) {
pa_volume_func_init_mmx (pa_cpu_x86_flags);
if (flags & PA_CPU_X86_MMX) {
pa_volume_func_init_mmx (flags);
}
if (pa_cpu_x86_flags & PA_CPU_X86_SSE) {
pa_volume_func_init_sse (pa_cpu_x86_flags);
if (flags & PA_CPU_X86_SSE) {
pa_volume_func_init_sse (flags);
}
#else
pa_cpu_x86_flags = 0;
#endif
#endif /* defined (__i386__) || defined (__amd64__) */
}