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https://github.com/cuberite/libdeflate.git
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f2c3a5b4e9
* Bring in common headers and program code from xpack project * Move program code to programs/ * Move library code to lib/ * GNU89 and MSVC2010 compatibility * Other changes
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/*
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* x86_cpu_features.h - feature detection for x86 processors
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*/
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#ifndef _LIB_X86_CPU_FEATURES_H
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#define _LIB_X86_CPU_FEATURES_H
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#include "common_defs.h"
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#if defined(__x86_64__) && COMPILER_SUPPORTS_TARGET_FUNCTION_ATTRIBUTE
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# define X86_CPU_FEATURES_ENABLED 1
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#else
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# define X86_CPU_FEATURES_ENABLED 0
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#endif
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#if X86_CPU_FEATURES_ENABLED
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#define X86_CPU_FEATURE_SSE 0x00000001
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#define X86_CPU_FEATURE_SSE2 0x00000002
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#define X86_CPU_FEATURE_SSE3 0x00000004
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#define X86_CPU_FEATURE_SSSE3 0x00000008
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#define X86_CPU_FEATURE_SSE4_1 0x00000010
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#define X86_CPU_FEATURE_SSE4_2 0x00000020
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#define X86_CPU_FEATURE_AVX 0x00000040
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#define X86_CPU_FEATURE_BMI 0x00000080
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#define X86_CPU_FEATURE_AVX2 0x00000100
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#define X86_CPU_FEATURE_BMI2 0x00000200
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#define X86_CPU_FEATURES_KNOWN 0x80000000
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extern u32 _x86_cpu_features;
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extern void
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x86_setup_cpu_features(void);
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/* Does the processor have the specified feature? */
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static inline bool
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x86_have_cpu_feature(u32 feature)
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{
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if (_x86_cpu_features == 0)
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x86_setup_cpu_features();
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return _x86_cpu_features & feature;
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}
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#endif /* X86_CPU_FEATURES_ENABLED */
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#endif /* _LIB_X86_CPU_FEATURES_H */
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