Mark
24 lines
767 B
C
24 lines
767 B
C
#pragma once
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#include "sys/types.h"
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#define CPUID_REQ_VENDOR 0x00
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#define CPUID_REQ_FEATURES 0x01
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#define CPUID_REQ_CACHE 0x02
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#define CPUID_REQ_SERIAL 0x03
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#define CPUID_REQ_EXT_FEATURES 0x80000001
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#define CPUID_EDX_FEATURE_PAT (1U << 16)
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#define CPUID_EDX_FEATURE_MTRR (1U << 12)
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#define CPUID_EXT_EDX_FEATURE_NX (1U << 20)
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#define CPUID_EXT_EDX_FEATURE_SYSCALL (1U << 11)
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extern uint32_t cpuid_features_ecx, cpuid_features_edx;
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extern uint32_t cpuid_ext_features_ecx, cpuid_ext_features_edx;
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static inline void cpuid(uint32_t eax, uint32_t *out) {
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asm volatile ("cpuid":"=a"(out[0]),"=c"(out[1]),"=d"(out[2]),"=b"(out[3]):"a"(eax));
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}
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void cpuid_init(void);
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