Line data    Source code

       1             : // Copyright (c) 2017-2019 The Bitcoin Core developers
       2             : // Distributed under the MIT software license, see the accompanying
       3             : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
       4             : 
       5             : #ifndef BITCOIN_COMPAT_CPUID_H
       6             : #define BITCOIN_COMPAT_CPUID_H
       7             : 
       8             : #if defined(__x86_64__) || defined(__amd64__) || defined(__i386__)
       9             : #define HAVE_GETCPUID
      10             : 
      11             : #include <cpuid.h>
      12             : 
      13             : // We can't use cpuid.h's __get_cpuid as it does not support subleafs.
      14       32404 : void static inline GetCPUID(uint32_t leaf, uint32_t subleaf, uint32_t& a, uint32_t& b, uint32_t& c, uint32_t& d)
      15             : {
      16             : #ifdef __GNUC__
      17       32404 :     __cpuid_count(leaf, subleaf, a, b, c, d);
      18             : #else
      19             :   __asm__ ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(leaf), "2"(subleaf));
      20             : #endif
      21       32404 : }
      22             : 
      23             : #endif // defined(__x86_64__) || defined(__amd64__) || defined(__i386__)
      24             : #endif // BITCOIN_COMPAT_CPUID_H