[AArch64] Clean up our CPUDetect.
Drops ARMv7 feature detection.
This commit is contained in:
Ryan Houdek
parent
4042945ee5
commit
0af5bdcf1d
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@ -5,13 +5,13 @@
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#include <fstream>
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#include <sstream>
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#include <string>
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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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// Only Linux platforms have /proc/cpuinfo
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#if !defined(BLACKBERRY) && !defined(IOS) && !defined(__SYMBIAN32__)
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const char procfile[] = "/proc/cpuinfo";
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static std::string GetCPUString()
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@ -37,111 +37,6 @@ static std::string GetCPUString()
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return cpu_string;
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}
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static unsigned char GetCPUImplementer()
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{
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const std::string marker = "CPU implementer\t: ";
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unsigned char implementer = 0;
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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 0;
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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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line = line.substr(marker.length());
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sscanf(line.c_str(), "0x%02hhx", &implementer);
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break;
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}
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}
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return implementer;
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}
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static unsigned short GetCPUPart()
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{
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const std::string marker = "CPU part\t: ";
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unsigned short part = 0;
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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 0;
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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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line = line.substr(marker.length());
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sscanf(line.c_str(), "0x%03hx", &part);
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break;
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}
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}
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return part;
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}
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static bool CheckCPUFeature(const std::string& feature)
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{
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const std::string marker = "Features\t: ";
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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 0;
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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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std::stringstream line_stream(line);
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std::string token;
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while (std::getline(line_stream, token, ' '))
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{
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if (token == feature)
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return true;
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}
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}
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}
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return false;
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}
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#endif
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static int GetCoreCount()
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{
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#ifdef __SYMBIAN32__
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return 1;
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#elif defined(BLACKBERRY) || defined(IOS)
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return 2;
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#else
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const std::string marker = "processor\t: ";
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int cores = 0;
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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 0;
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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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++cores;
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}
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}
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return cores;
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#endif
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}
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CPUInfo cpu_info;
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CPUInfo::CPUInfo()
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@ -155,133 +50,37 @@ void CPUInfo::Detect()
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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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#ifdef _M_ARM_64
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OS64bit = true;
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CPU64bit = true;
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Mode64bit = true;
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#else
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OS64bit = false;
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CPU64bit = false;
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Mode64bit = false;
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#endif
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vendor = VENDOR_ARM;
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// Get the information about the CPU
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num_cores = GetCoreCount();
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#if defined(__SYMBIAN32__) || defined(BLACKBERRY) || defined(IOS)
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bool isVFP3 = false;
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bool isVFP4 = false;
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#ifdef IOS
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isVFP3 = true;
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// Check for swift arch (VFP4`)
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#ifdef __ARM_ARCH_7S__
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isVFP4 = true;
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#endif // #ifdef __ARM_ARCH_7S__
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#elif defined(BLACKBERRY)
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isVFP3 = true;
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const char cpuInfoPath[] = "/pps/services/hw_info/inventory";
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const std::string marker = "Processor_Name::";
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const std::string qcCPU = "MSM";
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std::string line;
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std::ifstream file(cpuInfoPath);
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if (file)
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{
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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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std::string first_three_chars = line.substr(marker.length(), qcCPU.length());
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if (first_three_chars == qcCPU)
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{
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isVFP4 = true;
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}
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break;
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}
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}
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}
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#endif
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// Hardcode this for now
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bSwp = true;
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bHalf = true;
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bThumb = false;
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bFastMult = true;
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bVFP = true;
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bEDSP = true;
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bThumbEE = isVFP3;
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bNEON = isVFP3;
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bVFPv3 = isVFP3;
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bTLS = true;
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bVFPv4 = isVFP4;
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bIDIVa = isVFP4;
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bIDIVt = isVFP4;
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bFP = false;
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bASIMD = false;
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#else
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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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bSwp = CheckCPUFeature("swp");
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bHalf = CheckCPUFeature("half");
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bThumb = CheckCPUFeature("thumb");
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bFastMult = CheckCPUFeature("fastmult");
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bVFP = CheckCPUFeature("vfp");
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bEDSP = CheckCPUFeature("edsp");
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bThumbEE = CheckCPUFeature("thumbee");
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bNEON = CheckCPUFeature("neon");
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bVFPv3 = CheckCPUFeature("vfpv3");
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bTLS = CheckCPUFeature("tls");
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bVFPv4 = CheckCPUFeature("vfpv4");
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bIDIVa = CheckCPUFeature("idiva");
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bIDIVt = CheckCPUFeature("idivt");
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// Qualcomm Krait supports IDIVA but it doesn't report it. Check for krait.
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if (GetCPUImplementer() == 0x51 && GetCPUPart() == 0x6F) // Krait(300) is 0x6F, Scorpion is 0x4D
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bIDIVa = bIDIVt = true;
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// These two require ARMv8 or higher
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#ifdef _M_ARM_64
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bFP = CheckCPUFeature("fp");
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bASIMD = CheckCPUFeature("asimd");
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bAES = CheckCPUFeature("aes");
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bCRC32 = CheckCPUFeature("crc32");
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bSHA1 = CheckCPUFeature("sha1");
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bSHA2 = CheckCPUFeature("sha2");
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#endif
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#endif
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// On android, we build a separate library for ARMv7 so this is fine.
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// TODO: Check for ARMv7 on other platforms.
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#if defined(__ARM_ARCH_7A__)
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bArmV7 = true;
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#else
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bArmV7 = false;
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#endif
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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 defined(BLACKBERRY) || defined(IOS) || defined(__SYMBIAN32__)
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sum = StringFromFormat("%i cores", num_cores);
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#else
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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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#endif
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if (bSwp) sum += ", SWP";
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if (bHalf) sum += ", Half";
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if (bThumb) sum += ", Thumb";
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if (bFastMult) sum += ", FastMult";
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if (bVFP) sum += ", VFP";
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if (bEDSP) sum += ", EDSP";
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if (bThumbEE) sum += ", ThumbEE";
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if (bNEON) sum += ", NEON";
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if (bVFPv3) sum += ", VFPv3";
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if (bTLS) sum += ", TLS";
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if (bVFPv4) sum += ", VFPv4";
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if (bIDIVa) sum += ", IDIVa";
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if (bIDIVt) sum += ", IDIVt";
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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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@ -56,22 +56,6 @@ struct CPUInfo
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bool bLongMode;
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bool bAtom;
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// ARM specific CPUInfo
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bool bSwp;
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bool bHalf;
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bool bThumb;
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bool bFastMult;
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bool bVFP;
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bool bEDSP;
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bool bThumbEE;
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bool bNEON;
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bool bVFPv3;
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bool bTLS;
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bool bVFPv4;
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bool bIDIVa;
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bool bIDIVt;
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bool bArmV7; // enable MOVT, MOVW etc
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// ARMv8 specific
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bool bFP;
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bool bASIMD;
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@ -475,7 +475,7 @@ JNIEXPORT jstring JNICALL Java_org_dolphinemu_dolphinemu_NativeLibrary_GetVersio
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JNIEXPORT jboolean JNICALL Java_org_dolphinemu_dolphinemu_NativeLibrary_SupportsNEON(JNIEnv *env, jobject obj)
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{
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return cpu_info.bNEON || cpu_info.bASIMD;
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return cpu_info.bASIMD;
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}
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JNIEXPORT void JNICALL Java_org_dolphinemu_dolphinemu_NativeLibrary_SaveScreenShot(JNIEnv *env, jobject obj)
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