src/thread/sh/syscall_cp.s

   1 .text
   2 .global __cp_begin
   3 .hidden __cp_begin
   4 .global __cp_end
   5 .hidden __cp_end
   6 .global __cp_cancel
   7 .hidden __cp_cancel
   8 .hidden __cancel
   9 .global __syscall_cp_asm
  10 .hidden __syscall_cp_asm
  11 .type   __syscall_cp_asm, @function
  12 __syscall_cp_asm:
  13
  14 __cp_begin:
  15         mov.l @r4, r4
  16         tst   r4, r4
  17         bf    __cp_cancel
  18         mov   r5, r3
  19         mov   r6, r4
  20         mov   r7, r5
  21         mov.l @r15, r6
  22         mov.l @(4,r15), r7
  23         mov.l @(8,r15), r0
  24         mov.l @(12,r15), r1
  25         trapa #31
  26
  27 __cp_end:
  28         ! work around hardware bug
  29         or   r0, r0
  30         or   r0, r0
  31         or   r0, r0
  32         or   r0, r0
  33         or   r0, r0
  34
  35         rts
  36          nop
  37
  38 __cp_cancel:
  39         mov.l 2f, r0
  40         braf  r0
  41          nop
  42 1:
  43
  44 .align 2
  45 2:      .long __cancel@PCREL-(1b-.)