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73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
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/*
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Copyright (c) 2019, tevador <tevador@gmail.com>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the copyright holder nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "cpu.hpp"
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#if defined(_M_X64) || defined(__x86_64__)
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#define HAVE_CPUID
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#ifdef _WIN32
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#include <intrin.h>
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#define cpuid(info, x) __cpuidex(info, x, 0)
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#else //GCC
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#include <cpuid.h>
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void cpuid(int info[4], int InfoType) {
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__cpuid_count(InfoType, 0, info[0], info[1], info[2], info[3]);
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}
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#endif
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#endif
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#if defined(HAVE_HWCAP)
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#include <sys/auxv.h>
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#include <asm/hwcap.h>
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#endif
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namespace randomx {
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Cpu::Cpu() : aes_(false), ssse3_(false), avx2_(false) {
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#ifdef HAVE_CPUID
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int info[4];
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cpuid(info, 0);
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int nIds = info[0];
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if (nIds >= 0x00000001) {
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cpuid(info, 0x00000001);
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ssse3_ = (info[2] & (1 << 9)) != 0;
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aes_ = (info[2] & (1 << 25)) != 0;
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}
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if (nIds >= 0x00000007) {
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cpuid(info, 0x00000007);
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avx2_ = (info[1] & (1 << 5)) != 0;
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}
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#elif defined(__aarch64__) && defined(HWCAP_AES)
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long hwcaps = getauxval(AT_HWCAP);
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aes_ = (hwcaps & HWCAP_AES) != 0;
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#endif
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//TODO POWER8 AES
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}
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}
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