// Detects the various cpu features
void CPUInfo::Detect()
{
// Set some defaults here
// When ARMv8 cpus come out, these need to be updated.
HTT = false;
#ifdef _M_ARM_64
OS64bit = true;
CPU64bit = true;
Mode64bit = true;
#else
OS64bit = false;
CPU64bit = false;
Mode64bit = false;
#endif
vendor = VENDOR_ARM;
// Get the information about the CPU
num_cores = GetCoreCount();
#if defined(__SYMBIAN32__) || defined(BLACKBERRY) || defined(IOS)
bool isVFP3 = false;
bool isVFP4 = false;
#ifdef IOS
isVFP3 = true;
// Check for swift arch (VFP4`)
#ifdef __ARM_ARCH_7S__
isVFP4 = true;
#endif // #ifdef __ARM_ARCH_7S__
#elif defined(BLACKBERRY)
isVFP3 = true;
const char cpuInfoPath[] = "/pps/services/hw_info/inventory";
const std::string marker = "Processor_Name::";
const std::string qcCPU = "MSM";
std::string line;
std::ifstream file(cpuInfoPath);
if (file)
{
while (std::getline(file, line))
{
if (line.find(marker) != std::string::npos)
{
std::string first_three_chars = line.substr(marker.length(), qcCPU.length());
if (first_three_chars == qcCPU)
{
isVFP4 = true;
}
break;
}
}
}
#endif
// Hardcode this for now
bSwp = true;
bHalf = true;
bThumb = false;
bFastMult = true;
bVFP = true;
bEDSP = true;
bThumbEE = isVFP3;
bNEON = isVFP3;
bVFPv3 = isVFP3;
bTLS = true;
bVFPv4 = isVFP4;
bIDIVa = isVFP4;
bIDIVt = isVFP4;
bFP = false;
bASIMD = false;
#else
strncpy(cpu_string, GetCPUString().c_str(), sizeof(cpu_string));
bSwp = CheckCPUFeature("swp");
bHalf = CheckCPUFeature("half");
bThumb = CheckCPUFeature("thumb");
bFastMult = CheckCPUFeature("fastmult");
bVFP = CheckCPUFeature("vfp");
bEDSP = CheckCPUFeature("edsp");
bThumbEE = CheckCPUFeature("thumbee");
bNEON = CheckCPUFeature("neon");
bVFPv3 = CheckCPUFeature("vfpv3");
bTLS = CheckCPUFeature("tls");
bVFPv4 = CheckCPUFeature("vfpv4");
bIDIVa = CheckCPUFeature("idiva");
bIDIVt = CheckCPUFeature("idivt");
// Qualcomm Krait supports IDIVA but it doesn't report it. Check for krait.
if (GetCPUImplementer() == 0x51 && GetCPUPart() == 0x6F) // Krait(300) is 0x6F, Scorpion is 0x4D
bIDIVa = bIDIVt = true;
// These two require ARMv8 or higher
bFP = CheckCPUFeature("fp");
bASIMD = CheckCPUFeature("asimd");
#endif
// On android, we build a separate library for ARMv7 so this is fine.
// TODO: Check for ARMv7 on other platforms.
#if defined(__ARM_ARCH_7A__)
bArmV7 = true;
#else
bArmV7 = false;
#endif
}
// Detects the various cpu features
void CPUInfo::Detect()
{
// Set some defaults here
HTT = false;
#ifdef ARM64
OS64bit = true;
CPU64bit = true;
Mode64bit = true;
#else
OS64bit = false;
CPU64bit = false;
Mode64bit = false;
#endif
vendor = VENDOR_ARM;
// Get the information about the CPU
#if !defined(__linux__)
bool isVFP3 = false;
bool isVFP4 = false;
#ifdef IOS
isVFP3 = true;
// Check for swift arch (VFP4)
#ifdef __ARM_ARCH_7S__
isVFP4 = true;
#endif
strcpy(brand_string, "Apple A");
num_cores = 2;
#elif defined(BLACKBERRY)
isVFP3 = true;
deviceinfo_details_t* details;
deviceinfo_get_details(&details);
num_cores = deviceinfo_details_get_processor_core_count(details);
strcpy(brand_string, deviceinfo_details_get_processor_name(details));
if (!strncmp(brand_string, "MSM", 3))
isVFP4 = true;
deviceinfo_free_details(&details);
#else
strcpy(brand_string, "Unknown");
num_cores = 1;
#endif
strncpy(cpu_string, brand_string, sizeof(cpu_string));
// Hardcode this for now
bSwp = true;
bHalf = true;
bThumb = false;
bFastMult = true;
bVFP = true;
bEDSP = true;
bThumbEE = isVFP3;
bNEON = isVFP3;
bVFPv3 = isVFP3;
bTLS = true;
bVFPv4 = isVFP4;
bIDIVa = isVFP4;
bIDIVt = isVFP4;
bFP = false;
bASIMD = false;
#else // __linux__
strncpy(cpu_string, GetCPUString().c_str(), sizeof(cpu_string));
strncpy(brand_string, GetCPUBrandString().c_str(), sizeof(brand_string));
bSwp = CheckCPUFeature("swp");
bHalf = CheckCPUFeature("half");
bThumb = CheckCPUFeature("thumb");
bFastMult = CheckCPUFeature("fastmult");
bVFP = CheckCPUFeature("vfp");
bEDSP = CheckCPUFeature("edsp");
bThumbEE = CheckCPUFeature("thumbee");
bNEON = CheckCPUFeature("neon");
bVFPv3 = CheckCPUFeature("vfpv3");
bTLS = CheckCPUFeature("tls");
bVFPv4 = CheckCPUFeature("vfpv4");
bIDIVa = CheckCPUFeature("idiva");
bIDIVt = CheckCPUFeature("idivt");
// Qualcomm Krait supports IDIVA but it doesn't report it. Check for krait (0x4D = Plus, 0x6F = Pro).
unsigned short CPUPart = GetCPUPart();
if (GetCPUImplementer() == 0x51 && (CPUPart == 0x4D || CPUPart == 0x6F))
bIDIVa = bIDIVt = true;
// These two require ARMv8 or higher
bFP = CheckCPUFeature("fp");
bASIMD = CheckCPUFeature("asimd");
num_cores = GetCoreCount();
#endif
#ifdef ARM64
// Whether the above detection failed or not, on ARM64 we do have ASIMD/NEON.
bNEON = true;
bASIMD = true;
#endif
}
// Detects the various cpu features
void CPUInfo::Detect()
{
// Set some defaults here
// When ARMv8 cpus come out, these need to be updated.
HTT = false;
OS64bit = false;
CPU64bit = false;
Mode64bit = false;
vendor = VENDOR_ARM;
// Get the information about the CPU
num_cores = GetCoreCount();
#if defined(__SYMBIAN32__) || defined(BLACKBERRY) || defined(IOS)
bool isVFP3 = false;
bool isVFP4 = false;
#ifdef IOS
isVFP3 = true;
// Check for swift arch (VFP4`)
#ifdef __ARM_ARCH_7S__
isVFP4 = true;
#endif // #ifdef __ARM_ARCH_7S__
#elif defined(BLACKBERRY)
isVFP3 = true;
const char cpuInfoPath[] = "/pps/services/hw_info/inventory";
const char marker[] = "Processor_Name::";
const char qcCPU[] = "MSM";
char buf[1024];
FILE* fp;
if (fp = fopen(cpuInfoPath, "r"))
{
while (fgets(buf, sizeof(buf), fp))
{
if (strncmp(buf, marker, sizeof(marker) - 1))
continue;
if (strncmp(buf + sizeof(marker) - 1, qcCPU, sizeof(qcCPU) - 1) == 0)
isVFP4 = true;
break;
}
fclose(fp);
}
#endif
// Hardcode this for now
bSwp = true;
bHalf = true;
bThumb = false;
bFastMult = true;
bVFP = true;
bEDSP = true;
bThumbEE = isVFP3;
bNEON = isVFP3;
bVFPv3 = isVFP3;
bTLS = true;
bVFPv4 = isVFP4;
bIDIVa = isVFP4;
bIDIVt = isVFP4;
bFP = false;
bASIMD = false;
#else
strncpy(cpu_string, GetCPUString(), sizeof(cpu_string));
bSwp = CheckCPUFeature("swp");
bHalf = CheckCPUFeature("half");
bThumb = CheckCPUFeature("thumb");
bFastMult = CheckCPUFeature("fastmult");
bVFP = CheckCPUFeature("vfp");
bEDSP = CheckCPUFeature("edsp");
bThumbEE = CheckCPUFeature("thumbee");
bNEON = CheckCPUFeature("neon");
bVFPv3 = CheckCPUFeature("vfpv3");
bTLS = CheckCPUFeature("tls");
bVFPv4 = CheckCPUFeature("vfpv4");
bIDIVa = CheckCPUFeature("idiva");
bIDIVt = CheckCPUFeature("idivt");
// Qualcomm Krait supports IDIVA but it doesn't report it. Check for krait.
if (GetCPUImplementer() == 0x51 && GetCPUPart() == 0x6F) // Krait(300) is 0x6F, Scorpion is 0x4D
bIDIVa = bIDIVt = true;
// These two require ARMv8 or higher
bFP = CheckCPUFeature("fp");
bASIMD = CheckCPUFeature("asimd");
#endif
// On android, we build a separate library for ARMv7 so this is fine.
// TODO: Check for ARMv7 on other platforms.
#if defined(__ARM_ARCH_7A__)
bArmV7 = true;
#else
bArmV7 = false;
#endif
}
// Detects the various cpu features
void CPUInfo::Detect()
{
// Set some defaults here
// When ARMv8 cpus come out, these need to be updated.
HTT = false;
OS64bit = false;
CPU64bit = false;
Mode64bit = false;
vendor = VENDOR_ARM;
// Get the information about the CPU
#if defined(__SYMBIAN32__) || defined(BLACKBERRY) || defined(IOS)
bool isVFP3 = false;
bool isVFP4 = false;
#ifdef IOS
isVFP3 = true;
// Check for swift arch (VFP4)
#ifdef __ARM_ARCH_7S__
isVFP4 = true;
#endif
strcpy(brand_string, "Apple");
num_cores = 2;
#elif defined(BLACKBERRY)
isVFP3 = true;
deviceinfo_details_t* details;
deviceinfo_get_details(&details);
num_cores = deviceinfo_details_get_processor_core_count(details);
strcpy(brand_string, deviceinfo_details_get_processor_name(details));
if (!strncmp(brand_string, "MSM", 3))
isVFP4 = true;
deviceinfo_free_details(&details);
#elif defined(SYMBIAN)
strcpy(brand_string, "Samsung ARMv6");
num_cores = 1;
#endif
// Hardcode this for now
bSwp = true;
bHalf = true;
bThumb = false;
bFastMult = true;
bVFP = true;
bEDSP = true;
bThumbEE = isVFP3;
bNEON = isVFP3;
bVFPv3 = isVFP3;
bTLS = true;
bVFPv4 = isVFP4;
bIDIVa = isVFP4;
bIDIVt = isVFP4;
bFP = false;
bASIMD = false;
#else
strncpy(cpu_string, GetCPUString(), sizeof(cpu_string));
bSwp = CheckCPUFeature("swp");
bHalf = CheckCPUFeature("half");
bThumb = CheckCPUFeature("thumb");
bFastMult = CheckCPUFeature("fastmult");
bVFP = CheckCPUFeature("vfp");
bEDSP = CheckCPUFeature("edsp");
bThumbEE = CheckCPUFeature("thumbee");
bNEON = CheckCPUFeature("neon");
bVFPv3 = CheckCPUFeature("vfpv3");
bTLS = CheckCPUFeature("tls");
bVFPv4 = CheckCPUFeature("vfpv4");
bIDIVa = CheckCPUFeature("idiva");
bIDIVt = CheckCPUFeature("idivt");
// Qualcomm Krait supports IDIVA but it doesn't report it. Check for krait.
if (GetCPUImplementer() == 0x51 && GetCPUPart() == 0x6F) // Krait(300) is 0x6F, Scorpion is 0x4D
bIDIVa = bIDIVt = true;
// These two require ARMv8 or higher
bFP = CheckCPUFeature("fp");
bASIMD = CheckCPUFeature("asimd");
num_cores = GetCoreCount();
#endif
// On android, we build a separate library for ARMv7 so this is fine.
// TODO: Check for ARMv7 on other platforms.
#if defined(__ARM_ARCH_7A__)
bArmV7 = true;
#else
bArmV7 = false;
#endif
}