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cpu: check for CMOV flag before using this intsruction in assembly

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http://pulseaudio.org/ticket/776
This commit is contained in:
Lennart Poettering 2010-01-13 20:31:17 +01:00 • committed by Colin Guthrie
parent c88e4680f0
commit 54025c96a7
3 changed files with 8 additions and 4 deletions
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6
src/pulsecore/cpu-x86.c
View file

@ -57,6 +57,9 @@ void pa_cpu_init_x86 (void) {
if (level >= 1) { if (level >= 1) {
get_cpuid (0x00000001, &eax, &ebx, &ecx, &edx); get_cpuid (0x00000001, &eax, &ebx, &ecx, &edx);
if (edx & (1<<15))
flags |= PA_CPU_X86_CMOV;
if (edx & (1<<23)) if (edx & (1<<23))
flags |= PA_CPU_X86_MMX; flags |= PA_CPU_X86_MMX;
@ -97,7 +100,8 @@ void pa_cpu_init_x86 (void) {
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_log_info ("CPU flags: %s%s%s%s%s%s%s%s%s%s%s",
(flags & PA_CPU_X86_CMOV) ? "CMOV " : "",
(flags & PA_CPU_X86_MMX) ? "MMX " : "", (flags & PA_CPU_X86_MMX) ? "MMX " : "",
(flags & PA_CPU_X86_SSE) ? "SSE " : "", (flags & PA_CPU_X86_SSE) ? "SSE " : "",
(flags & PA_CPU_X86_SSE2) ? "SSE2 " : "", (flags & PA_CPU_X86_SSE2) ? "SSE2 " : "",

4
src/pulsecore/cpu-x86.h
View file

@ -35,12 +35,12 @@ typedef enum pa_cpu_x86_flag {
PA_CPU_X86_SSE4_1 = (1 << 6), PA_CPU_X86_SSE4_1 = (1 << 6),
PA_CPU_X86_SSE4_2 = (1 << 7), PA_CPU_X86_SSE4_2 = (1 << 7),
PA_CPU_X86_3DNOW = (1 << 8), PA_CPU_X86_3DNOW = (1 << 8),
PA_CPU_X86_3DNOWEXT = (1 << 9) PA_CPU_X86_3DNOWEXT = (1 << 9),
PA_CPU_X86_CMOV = (1 << 10)
} pa_cpu_x86_flag_t; } pa_cpu_x86_flag_t;
void pa_cpu_init_x86 (void); void pa_cpu_init_x86 (void);
#if defined (__i386__) #if defined (__i386__)
typedef int32_t pa_reg_x86; typedef int32_t pa_reg_x86;
#define PA_REG_a "eax" #define PA_REG_a "eax"

2
src/pulsecore/svolume_mmx.c
View file

@ -309,7 +309,7 @@ void pa_volume_func_init_mmx (pa_cpu_x86_flag_t flags) {
run_test (); run_test ();
#endif #endif
if (flags & PA_CPU_X86_MMX) { if ((flags & PA_CPU_X86_MMX) && (flags & PA_CPU_X86_CMOV)) {
pa_log_info("Initialising MMX optimized functions."); pa_log_info("Initialising MMX optimized functions.");
pa_set_volume_func (PA_SAMPLE_S16NE, (pa_do_volume_func_t) pa_volume_s16ne_mmx); pa_set_volume_func (PA_SAMPLE_S16NE, (pa_do_volume_func_t) pa_volume_s16ne_mmx);