mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2025-04-29 12:17:49 +02:00
68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
/*
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* Copyright (c) 2013-2020, 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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#if defined(__x86_64__) || defined(__i386__)
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#include <cpuid.h>
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#endif
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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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#ifndef bit_AVX
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#define bit_AVX (1 << 28)
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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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bool avx = false;
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void Detect(bool AesSwitch, bool AvxSwitch, bool force)
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{
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#if defined(__x86_64__) || defined(__i386__)
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int info[4];
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__cpuid(0, info[0], info[1], info[2], info[3]);
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if (info[0] >= 0x00000001) {
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__cpuid(0x00000001, info[0], info[1], info[2], info[3]);
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#if defined (_WIN32) && (WINVER == 0x0501) // WinXP
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if (AesSwitch && force) { // only if forced
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#else
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if ((info[2] & bit_AES && AesSwitch) || (AesSwitch && force)) {
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#endif
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aesni = true;
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}
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#if defined (_WIN32) && (WINVER == 0x0501) // WinXP
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if (AvxSwitch && force) { // only if forced
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#else
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if ((info[2] & bit_AVX && AvxSwitch) || (AvxSwitch && force)) {
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#endif
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avx = true;
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}
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}
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#endif // defined(__x86_64__) || defined(__i386__)
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#ifdef __e2k__ // The reason this kind of static config is ok for Elbrus is because there are
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// much less hardware revisions than x86, and a binary compiled
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// on a newer Elbrus CPU will outright not work on a older model anyway.
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#ifdef __AES__
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if (AesSwitch) aesni = true;
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#endif
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#ifdef __AVX__
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if (AvxSwitch) avx = true;
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#endif
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#endif
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LogPrint(eLogInfo, "AESNI ", (aesni ? "enabled" : "disabled"));
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LogPrint(eLogInfo, "AVX ", (avx ? "enabled" : "disabled"));
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}
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}
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}
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