Question

C++ 怎么获取CPUID

Answer 1

Intel格式：
__asm
{
mov eax, veax
cpuid
mov deax, eax
mov debx, ebx
mov decx, ecx
mov dedx, edx
}
AT&T格式：
__asm__("movl %4, %%x\n\t"
"cpuid\n\t"
"movl %%x, %0\n\t"
"movl %%x, %1\n\t"
"movl %%x, %2\n\t"
"movl %%x, %3"
:"=m"(deax),"=m"(debx),"=m"(decx),"=m"(dedx)
:"r"(veax)
:"%x","%x","%x","%x"
);

Answer 2

帮你到这儿了，加油楼主

https://github.com/FFmpeg/FFmpeg/blob/master/libavutil/cpu.c