core/thread/sem_asm.S

   1         .globl  sem_down
   2         .type   sem_down, @function
   3 sem_down:
   4         decl    (%eax)
   5         js      __sem_down_slow
   6         xorl    %eax, %eax
   7         ret
   8         .size   sem_down, .-sem_down
   9
  10         .globl  sem_up
  11         .type   sem_up, @function
  12 sem_up:
  13         incl    (%eax)
  14         jle     __sem_up_slow
  15         ret
  16         .size   sem_up, .-sem_up