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1// Copyright (c) 2017-present The Bitcoin Core developers2// Distributed under the MIT software license, see the accompanying3// file COPYING or http://www.opensource.org/licenses/mit-license.php.5#ifndef BITCOIN_COMPAT_CPUID_H6#define BITCOIN_COMPAT_CPUID_H8#if defined(__x86_64__) || defined(__amd64__) || defined(__i386__)9#define HAVE_GETCPUID11#include <cpuid.h>13#include <cstdint>15// We can't use cpuid.h's __get_cpuid as it does not support subleafs.16void static inline GetCPUID(uint32_t leaf, uint32_t subleaf, uint32_t& a, uint32_t& b, uint32_t& c, uint32_t& d)17{18#ifdef __GNUC__19__cpuid_count(leaf, subleaf, a, b, c, d);20#else21__asm__ ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(leaf), "2"(subleaf));22#endif23}25#endif // defined(__x86_64__) || defined(__amd64__) || defined(__i386__)26#endif // BITCOIN_COMPAT_CPUID_H
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