lib/hcrypto/libtommath/etc/timer.asm

   1 ; x86 timer in NASM
   2 ;
   3 ; Tom St Denis, tomstdenis@iahu.ca
   4 [bits 32]
   5 [section .data]
   6 time dd 0, 0
   7
   8 [section .text]
   9
  10 %ifdef USE_ELF
  11 [global t_start]
  12 t_start:
  13 %else
  14 [global _t_start]
  15 _t_start:
  16 %endif
  17    push edx
  18    push eax
  19    rdtsc
  20    mov [time+0],edx
  21    mov [time+4],eax
  22    pop eax
  23    pop edx
  24    ret
  25
  26 %ifdef USE_ELF
  27 [global t_read]
  28 t_read:
  29 %else
  30 [global _t_read]
  31 _t_read:
  32 %endif
  33    rdtsc
  34    sub eax,[time+4]
  35    sbb edx,[time+0]
  36    ret
  37