forked from dolphin-emu/dolphin
89 lines
1.8 KiB
C++
89 lines
1.8 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <fstream>
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#include <sstream>
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#include <string>
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#include <unistd.h>
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#include <asm/hwcap.h>
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#include <sys/auxv.h>
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#include "Common/CommonTypes.h"
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#include "Common/CPUDetect.h"
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#include "Common/StringUtil.h"
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const char procfile[] = "/proc/cpuinfo";
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static std::string GetCPUString()
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{
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const std::string marker = "Hardware\t: ";
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std::string cpu_string = "Unknown";
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std::string line;
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std::ifstream file(procfile);
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if (!file)
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return cpu_string;
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while (std::getline(file, line))
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{
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if (line.find(marker) != std::string::npos)
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{
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cpu_string = line.substr(marker.length());
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break;
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}
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}
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return cpu_string;
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}
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CPUInfo cpu_info;
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CPUInfo::CPUInfo()
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{
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Detect();
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}
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// Detects the various CPU features
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void CPUInfo::Detect()
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{
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// Set some defaults here
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// When ARMv8 CPUs come out, these need to be updated.
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HTT = false;
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OS64bit = true;
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CPU64bit = true;
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Mode64bit = true;
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vendor = VENDOR_ARM;
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// Get the information about the CPU
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num_cores = sysconf(_SC_NPROCESSORS_CONF);
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strncpy(cpu_string, GetCPUString().c_str(), sizeof(cpu_string));
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unsigned long hwcaps = getauxval(AT_HWCAP);
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bFP = hwcaps & HWCAP_FP;
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bASIMD = hwcaps & HWCAP_ASIMD;
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bAES = hwcaps & HWCAP_AES;
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bCRC32 = hwcaps & HWCAP_CRC32;
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bSHA1 = hwcaps & HWCAP_SHA1;
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bSHA2 = hwcaps & HWCAP_SHA2;
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}
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// Turn the CPU info into a string we can show
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std::string CPUInfo::Summarize()
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{
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std::string sum;
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if (num_cores == 1)
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sum = StringFromFormat("%s, %i core", cpu_string, num_cores);
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else
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sum = StringFromFormat("%s, %i cores", cpu_string, num_cores);
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if (bAES) sum += ", AES";
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if (bCRC32) sum += ", CRC32";
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if (bSHA1) sum += ", SHA1";
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if (bSHA2) sum += ", SHA2";
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if (CPU64bit) sum += ", 64-bit";
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return sum;
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}
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