// Copyright (c) 2017-present The Bitcoin Core developers

// Distributed under the MIT software license, see the accompanying

// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#ifndef BITCOIN_COMPAT_CPUID_H

#define BITCOIN_COMPAT_CPUID_H

#if defined(__x86_64__) || defined(__amd64__) || defined(__i386__)

#define HAVE_GETCPUID

#include <cpuid.h>

#include <cstdint>

// We can't use cpuid.h's __get_cpuid as it does not support subleafs.

void static inline GetCPUID(uint32_t leaf, uint32_t subleaf, uint32_t& a, uint32_t& b, uint32_t& c, uint32_t& d)

{

#ifdef __GNUC__

    __cpuid_count(leaf, subleaf, a, b, c, d);

#else

  __asm__ ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(leaf), "2"(subleaf));

#endif

}

random.cpp:GetCPUID(unsigned int, unsigned int, unsigned int&, unsigned int&, unsigned int&, unsigned int&)

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17

54

{

18

54

#ifdef __GNUC__

19

54

    __cpuid_count(leaf, subleaf, a, b, c, d);

20

#else

21

  __asm__ ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(leaf), "2"(subleaf));

22

#endif

23

54

}

randomenv.cpp:GetCPUID(unsigned int, unsigned int, unsigned int&, unsigned int&, unsigned int&, unsigned int&)

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1.72k

{

18

1.72k

#ifdef __GNUC__

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1.72k

    __cpuid_count(leaf, subleaf, a, b, c, d);

20

#else

21

  __asm__ ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(leaf), "2"(subleaf));

22

#endif

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1.72k

}

sha256.cpp:GetCPUID(unsigned int, unsigned int, unsigned int&, unsigned int&, unsigned int&, unsigned int&)

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17

54

{

18

54

#ifdef __GNUC__

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54

    __cpuid_count(leaf, subleaf, a, b, c, d);

20

#else

21

  __asm__ ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(leaf), "2"(subleaf));

22

#endif

23

54

}

#endif // defined(__x86_64__) || defined(__amd64__) || defined(__i386__)

#endif // BITCOIN_COMPAT_CPUID_H