bits 32 section .data bits 32 times ($$-$)&7 db 0 section .text bits 32 global rdtscCapableCpu_ global _rdtscCapableCpu global _ticker global ticker_ _ticker: ticker_: push edx rdtsc shr eax,8 shl edx,24 and edx,0xff000000 or eax,edx pop edx ret rdtscCapableCpu_: _rdtscCapableCpu: push ebx push ecx push edx mov eax,1 xor ebx,ebx xor ecx,ecx xor edx,edx cpuid test edx,0x10 setne al and eax,1 pop edx pop ecx pop ebx ret end