mirror of
https://github.com/cuberite/libdeflate.git
synced 2025-08-04 02:06:31 -04:00
f23fd6ca7f
This is less unwieldy and is consistent with "DISPATCH_PCLMUL" and with the "-mno-pclmul" compiler flag.
42 lines
931 B
C
42 lines
931 B
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 "../lib_common.h"
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#if (defined(__i386__) || defined(__x86_64__)) && \
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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_SSE2 0x00000001
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#define X86_CPU_FEATURE_PCLMUL 0x00000002
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#define X86_CPU_FEATURE_AVX 0x00000004
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#define X86_CPU_FEATURE_AVX2 0x00000008
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#define X86_CPU_FEATURE_BMI2 0x00000010
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#define X86_CPU_FEATURE_AVX512BW 0x00000020
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#define X86_CPU_FEATURES_KNOWN 0x80000000
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extern volatile u32 _cpu_features;
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void setup_cpu_features(void);
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static inline u32 get_cpu_features(void)
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{
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if (_cpu_features == 0)
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setup_cpu_features();
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return _cpu_features;
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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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