mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-11-04 06:00:37 +00:00
69 lines
1.4 KiB
C++
69 lines
1.4 KiB
C++
/*
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* Copyright (c) 2013-2023, The PurpleI2P Project
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*
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* This file is part of Purple i2pd project and licensed under BSD3
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*
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* See full license text in LICENSE file at top of project tree
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*/
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#include "CPU.h"
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#include "Log.h"
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#ifndef bit_AES
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#define bit_AES (1 << 25)
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#endif
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#if defined(__GNUC__) && __GNUC__ < 6 && IS_X86
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#include <cpuid.h>
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#endif
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#ifdef _MSC_VER
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#include <intrin.h>
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#endif
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namespace i2p
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{
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namespace cpu
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{
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bool aesni = false;
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inline bool cpu_support_aes()
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{
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#if IS_X86
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#if defined(__clang__)
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# if (__clang_major__ >= 6)
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__builtin_cpu_init();
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# endif
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return __builtin_cpu_supports("aes");
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#elif (defined(__GNUC__) && __GNUC__ >= 6)
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__builtin_cpu_init();
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return __builtin_cpu_supports("aes");
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#elif (defined(__GNUC__) && __GNUC__ < 6)
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int cpu_info[4];
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bool flag = false;
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__cpuid(0, cpu_info[0], cpu_info[1], cpu_info[2], cpu_info[3]);
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if (cpu_info[0] >= 0x00000001) {
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__cpuid(0x00000001, cpu_info[0], cpu_info[1], cpu_info[2], cpu_info[3]);
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flag = ((cpu_info[2] & bit_AES) != 0);
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}
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return flag;
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#elif defined(_MSC_VER)
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int cpu_info[4];
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__cpuid(cpu_info, 1);
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return ((cpu_info[2] & bit_AES) != 0);
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#endif
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#endif
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return false;
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}
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void Detect(bool AesSwitch, bool force)
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{
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if ((cpu_support_aes() && AesSwitch) || (AesSwitch && force)) {
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aesni = true;
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}
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LogPrint(eLogInfo, "AESNI ", (aesni ? "enabled" : "disabled"));
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}
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}
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}
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