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26 lines
649 B
C
26 lines
649 B
C
// SPDX-FileCopyrightText: 2017 Google LLC
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// SPDX-License-Identifier: Apache-2.0
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#ifndef CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
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#define CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
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#include "cpu_features_macros.h"
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#include <stdint.h>
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CPU_FEATURES_START_CPP_NAMESPACE
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// A struct to hold the result of a call to cpuid.
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typedef struct
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{
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uint32_t eax, ebx, ecx, edx;
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} Leaf;
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// Returns the result of a call to the cpuid instruction.
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Leaf GetCpuidLeaf(uint32_t leaf_id, int ecx);
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// Returns the eax value of the XCR0 register.
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uint32_t GetXCR0Eax(void);
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CPU_FEATURES_END_CPP_NAMESPACE
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#endif // CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
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