mirror of
https://github.com/gnif/LookingGlass.git
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88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "common/cpuinfo.h"
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#include "common/debug.h"
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#include "common/util.h"
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void cpuInfo_log(void)
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{
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char model[1024];
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int procs;
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int cores;
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int sockets;
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if (!cpuInfo_get(model, sizeof model, &procs, &cores, &sockets))
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{
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DEBUG_WARN("Failed to get CPU information");
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return;
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}
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DEBUG_INFO("CPU Model: %s", model);
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DEBUG_INFO("CPU: %d sockets, %d cores, %d threads", sockets, cores, procs);
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}
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const CPUInfoFeatures * cpuInfo_getFeatures(void)
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{
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static bool initialized = false;
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static CPUInfoFeatures features;
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if (likely(initialized))
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return &features;
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int cpuid[4] = {0};
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// leaf1
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platform_cpuInfoCPUID(cpuid, 1, 0);
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features.sse = cpuid[3] & (1 << 25);
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features.sse2 = cpuid[3] & (1 << 26);
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features.sse3 = cpuid[2] & (1 << 0);
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features.ssse3 = cpuid[2] & (1 << 9);
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features.fma = cpuid[2] & (1 << 12);
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features.sse4_1 = cpuid[2] & (1 << 19);
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features.sse4_2 = cpuid[2] & (1 << 20);
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features.popcnt = cpuid[2] & (1 << 23);
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features.aes = cpuid[2] & (1 << 25);
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features.xsave = cpuid[2] & (1 << 26);
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features.osxsave = cpuid[2] & (1 << 27);
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features.avx = cpuid[2] & (1 << 28);
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// leaf7
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platform_cpuInfoCPUID(cpuid, 7, 0);
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features.avx2 = cpuid[1] & (1 << 5);
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features.bmi1 = cpuid[2] & (1 << 3);
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features.bmi2 = cpuid[2] & (1 << 8);
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if (features.osxsave && features.avx)
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{
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const uint64_t xgetbv = platform_cpuInfoXGETBV(0);
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if (!(xgetbv & 0x6))
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{
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features.avx = false;
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features.avx2 = false;
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}
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}
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return &features;
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};
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