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-BEGIN VERIFY SCRIPT- ./contrib/devtools/copyright_header.py update ./ -END VERIFY SCRIPT- Commits of previous years: - 2021:f47dda2c58- 2020:fa0074e2d8- 2019:aaaaad6ac9
26 lines
842 B
C++
26 lines
842 B
C++
// Copyright (c) 2017-2022 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_COMPAT_CPUID_H
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#define BITCOIN_COMPAT_CPUID_H
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#if defined(__x86_64__) || defined(__amd64__) || defined(__i386__)
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#define HAVE_GETCPUID
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#include <cpuid.h>
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#include <cstdint>
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// We can't use cpuid.h's __get_cpuid as it does not support subleafs.
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void static inline GetCPUID(uint32_t leaf, uint32_t subleaf, uint32_t& a, uint32_t& b, uint32_t& c, uint32_t& d)
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{
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#ifdef __GNUC__
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__cpuid_count(leaf, subleaf, a, b, c, d);
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#else
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__asm__ ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(leaf), "2"(subleaf));
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#endif
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}
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#endif // defined(__x86_64__) || defined(__amd64__) || defined(__i386__)
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#endif // BITCOIN_COMPAT_CPUID_H
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