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#include "evas_common_private.h"
static int cpu_feature_mask = 0;
static Eina_Bool
_cpu_check(Eina_Cpu_Features f)
{
Eina_Cpu_Features features = eina_cpu_features_get();
return (features & f) == f;
}
EAPI void
evas_common_cpu_init(void)
{
static int called = 0;
if (called) return;
called = 1;
#ifdef BUILD_MMX
if (getenv("EVAS_CPU_NO_MMX"))
cpu_feature_mask &= ~CPU_FEATURE_MMX;
else
cpu_feature_mask |= _cpu_check(EINA_CPU_MMX) * CPU_FEATURE_MMX;
if (getenv("EVAS_CPU_NO_MMX2"))
cpu_feature_mask &= ~CPU_FEATURE_MMX2;
else /* It seems "MMX2" is actually part of SSE (and 3DNow)? */
cpu_feature_mask |= _cpu_check(EINA_CPU_SSE) * CPU_FEATURE_MMX2;
if (getenv("EVAS_CPU_NO_SSE"))
cpu_feature_mask &= ~CPU_FEATURE_SSE;
else
cpu_feature_mask |= _cpu_check(EINA_CPU_SSE) * CPU_FEATURE_SSE;
# ifdef BUILD_SSE3
if (getenv("EVAS_CPU_NO_SSE3"))
cpu_feature_mask &= ~CPU_FEATURE_SSE3;
else
cpu_feature_mask |= _cpu_check(EINA_CPU_SSE3) * CPU_FEATURE_SSE3;
# endif /* BUILD_SSE3 */
#endif /* BUILD_MMX */
#ifdef BUILD_ALTIVEC
if (getenv("EVAS_CPU_NO_ALTIVEC"))
cpu_feature_mask &= ~CPU_FEATURE_ALTIVEC;
else
cpu_feature_mask |= _cpu_check(CPU_FEATURE_ALTIVEC) * CPU_FEATURE_ALTIVEC;
#endif /* BUILD_ALTIVEC */
#if defined(__ARM_ARCH__)
# ifdef BUILD_NEON
if (getenv("EVAS_CPU_NO_NEON"))
cpu_feature_mask &= ~CPU_FEATURE_NEON;
else
cpu_feature_mask |= _cpu_check(EINA_CPU_NEON) * CPU_FEATURE_NEON;
# endif
#endif
#if defined(__aarch64__)
# ifdef BUILD_NEON
if (getenv("EVAS_CPU_NO_NEON"))
cpu_feature_mask &= ~CPU_FEATURE_NEON;
else
cpu_feature_mask |= CPU_FEATURE_NEON;
# endif
if (getenv("EVAS_CPU_NO_SVE"))
cpu_feature_mask &= ~CPU_FEATURE_SVE;
else
cpu_feature_mask |= _cpu_check(EINA_CPU_SVE) * CPU_FEATURE_SVE;
#endif
}
int
evas_common_cpu_has_feature(unsigned int feature)
{
return (cpu_feature_mask & feature);
}
int
evas_common_cpu_have_cpuid(void)
{
return 0;
}
EAPI void
evas_common_cpu_can_do(int *mmx, int *sse, int *sse2)
{
static int do_mmx = 0, do_sse = 0, do_sse2 = 0, done = 0;
if (!done)
{
if (cpu_feature_mask & CPU_FEATURE_MMX) do_mmx = 1;
if (cpu_feature_mask & CPU_FEATURE_MMX2) do_sse = 1;
if (cpu_feature_mask & CPU_FEATURE_SSE) do_sse = 1;
done = 1;
}
*mmx = do_mmx;
*sse = do_sse;
*sse2 = do_sse2;
}
#ifdef BUILD_MMX
EAPI void
evas_common_cpu_end_opt(void)
{
if (cpu_feature_mask & (CPU_FEATURE_MMX | CPU_FEATURE_MMX2))
{
emms();
}
}
#else
EAPI void
evas_common_cpu_end_opt(void)
{
}
#endif
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