mirror of
https://github.com/xmrig/xmrig.git
synced 2024-11-06 00:17:39 +00:00
100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
/* XMRig
|
|
* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
|
|
* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
|
|
* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
|
|
* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
|
|
* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
|
|
* Copyright 2016-2017 XMRig <support@xmrig.com>
|
|
*
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <cpuid.h>
|
|
#include <string.h>
|
|
#include <stdbool.h>
|
|
#include "cpu.h"
|
|
|
|
|
|
#define VENDOR_ID (0)
|
|
#define PROCESSOR_INFO (1)
|
|
#define CACHE_TLB_DESCRIPTOR (2)
|
|
#define EXTENDED_FEATURES (7)
|
|
#define PROCESSOR_BRAND_STRING_1 (0x80000002)
|
|
#define PROCESSOR_BRAND_STRING_2 (0x80000003)
|
|
#define PROCESSOR_BRAND_STRING_3 (0x80000004)
|
|
|
|
#define EAX_Reg (0)
|
|
#define EBX_Reg (1)
|
|
#define ECX_Reg (2)
|
|
#define EDX_Reg (3)
|
|
|
|
|
|
static inline void cpuid(int level, int output[4]) {
|
|
int a, b, c, d;
|
|
__cpuid_count(level, 0, a, b, c, d);
|
|
|
|
output[0] = a;
|
|
output[1] = b;
|
|
output[2] = c;
|
|
output[3] = d;
|
|
}
|
|
|
|
|
|
static void cpu_brand_string(char* s) {
|
|
int cpu_info[4] = { 0 };
|
|
cpuid(VENDOR_ID, cpu_info);
|
|
|
|
if (cpu_info[EAX_Reg] >= 4) {
|
|
for (int i = 0; i < 4; i++) {
|
|
cpuid(0x80000002 + i, cpu_info);
|
|
memcpy(s, cpu_info, sizeof(cpu_info));
|
|
s += 16;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static bool has_aes_ni()
|
|
{
|
|
int cpu_info[4] = { 0 };
|
|
cpuid(PROCESSOR_INFO, cpu_info);
|
|
|
|
return cpu_info[ECX_Reg] & bit_AES;
|
|
}
|
|
|
|
|
|
static bool has_bmi2() {
|
|
int cpu_info[4] = { 0 };
|
|
cpuid(EXTENDED_FEATURES, cpu_info);
|
|
|
|
return cpu_info[EBX_Reg] & bit_BMI2;
|
|
}
|
|
|
|
|
|
void cpu_init_common() {
|
|
cpu_brand_string(cpu_info.brand);
|
|
|
|
# ifdef __x86_64__
|
|
cpu_info.flags |= CPU_FLAG_X86_64;
|
|
# endif
|
|
|
|
if (has_aes_ni()) {
|
|
cpu_info.flags |= CPU_FLAG_AES;
|
|
}
|
|
|
|
if (has_bmi2()) {
|
|
cpu_info.flags |= CPU_FLAG_BMI2;
|
|
}
|
|
}
|