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Autodetect ASM without libcpuid.

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This commit is contained in:
XMRig 2018-10-05 15:58:33 +03:00
parent 11748fad78
commit b02f4ff163
1 changed files with 25 additions and 3 deletions
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28
cpu_stub.c
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@ -24,7 +24,11 @@
#include <cpuid.h>
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
#include "cpu.h"
#include "options.h"
#define VENDOR_ID (0)
@ -53,7 +57,7 @@ static inline void cpuid(int level, int output[4]) {
static 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) {
@ -68,7 +72,7 @@ static void cpu_brand_string(char* s) {
static 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;
@ -76,7 +80,7 @@ static bool has_aes_ni()
static bool has_bmi2() {
int cpu_info[4] = { 0 };
int32_t cpu_info[4] = { 0 };
cpuid(EXTENDED_FEATURES, cpu_info);
return cpu_info[EBX_Reg] & bit_BMI2;
@ -93,6 +97,24 @@ void cpu_init_common() {
if (has_aes_ni()) {
cpu_info.flags |= CPU_FLAG_AES;
# ifndef XMRIG_NO_ASM
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) {
cpu_info.assembly = ASM_INTEL;
}
else if (memcmp(vendor, "AuthenticAMD", 12) == 0) {
cpu_info.assembly = ASM_RYZEN;
}
# endif
}
if (has_bmi2()) {