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