; x86 timer in NASM ; ; Tom St Denis, tomstdenis@iahu.ca [bits 32] [section .data] time dd 0, 0 [section .text] %ifdef USE_ELF [global t_start] t_start: %else [global _t_start] _t_start: %endif push edx push eax rdtsc mov [time+0],edx mov [time+4],eax pop eax pop edx ret %ifdef USE_ELF [global t_read] t_read: %else [global _t_read] _t_read: %endif rdtsc sub eax,[time+4] sbb edx,[time+0] ret
