libc-top-half/musl/src/unistd/sh/pipe.s

   1 .global pipe
   2 .type   pipe, @function
   3 pipe:
   4         mov    #42, r3
   5         trapa  #31
   6
   7         ! work around hardware bug
   8         or     r0, r0
   9         or     r0, r0
  10         or     r0, r0
  11         or     r0, r0
  12         or     r0, r0
  13
  14         cmp/pz r0
  15         bt     1f
  16
  17         mov.l  L1, r1
  18         braf   r1
  19          mov   r0, r4
  20
  21 1:      mov.l  r0, @(0,r4)
  22         mov.l  r1, @(4,r4)
  23         rts
  24          mov   #0, r0
  25
  26 .align 2
  27 L1:     .long __syscall_ret@PLT-(1b-.)