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Add ASM detection for builds without libcpuid.

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This commit is contained in:
XMRig 2018-10-06 15:13:55 +03:00
parent 8f3d405b34
commit ad92c3b025
2 changed files with 25 additions and 4 deletions
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25
src/common/cpu/BasicCpuInfo.cpp
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@ -71,7 +71,7 @@ static inline void cpuid(int level, int output[4]) {
static inline void cpu_brand_string(char* s) {
int cpu_info[4] = { 0 };
int32_t cpu_info[4] = { 0 };
cpuid(VENDOR_ID, cpu_info);
if (cpu_info[EAX_Reg] >= 4) {
@ -86,7 +86,7 @@ static inline void cpu_brand_string(char* s) {
static inline bool has_aes_ni()
{
int cpu_info[4] = { 0 };
int32_t cpu_info[4] = { 0 };
cpuid(PROCESSOR_INFO, cpu_info);
return (cpu_info[ECX_Reg] & bit_AES) != 0;
@ -94,11 +94,32 @@ static inline bool has_aes_ni()
xmrig::BasicCpuInfo::BasicCpuInfo() :
m_assembly(ASM_NONE),
m_aes(has_aes_ni()),
m_brand(),
m_threads(std::thread::hardware_concurrency())
{
cpu_brand_string(m_brand);
# ifndef XMRIG_NO_ASM
if (hasAES()) {
char vendor[13] = { 0 };
int32_t data[4] = { 0 };
cpuid(0, data);
memcpy(vendor + 0, &data[1], 4);
memcpy(vendor + 4, &data[3], 4);
memcpy(vendor + 8, &data[2], 4);
if (memcmp(vendor, "GenuineIntel", 12) == 0) {
m_assembly = ASM_INTEL;
}
else if (memcmp(vendor, "AuthenticAMD", 12) == 0) {
m_assembly = ASM_RYZEN;
}
}
# endif
}