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2eeaa9282e
If support for CRC32 instructions is detected, set ARM_CPU_FEATURE_CRC32. Also define COMPILER_SUPPORTS_CRC32_TARGET_INTRINSICS when appropriate, and update run_tests.sh to toggle the crc32 feature for testing.
41 lines
860 B
C
41 lines
860 B
C
/*
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* arm/cpu_features.h - feature detection for ARM processors
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*/
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#ifndef LIB_ARM_CPU_FEATURES_H
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#define LIB_ARM_CPU_FEATURES_H
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#include "../lib_common.h"
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#if (defined(__arm__) || defined(__aarch64__)) && \
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defined(__linux__) && \
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COMPILER_SUPPORTS_TARGET_FUNCTION_ATTRIBUTE && \
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!defined(FREESTANDING)
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# define ARM_CPU_FEATURES_ENABLED 1
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#else
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# define ARM_CPU_FEATURES_ENABLED 0
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#endif
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#if ARM_CPU_FEATURES_ENABLED
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#define ARM_CPU_FEATURE_NEON 0x00000001
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#define ARM_CPU_FEATURE_PMULL 0x00000002
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#define ARM_CPU_FEATURE_CRC32 0x00000004
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#define ARM_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 /* ARM_CPU_FEATURES_ENABLED */
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#endif /* LIB_ARM_CPU_FEATURES_H */
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