tools/testing/selftests/powerpc/signal/signal.S

   1 /*
   2  * Copyright 2015, Cyril Bur, IBM Corp.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version
   7  * 2 of the License, or (at your option) any later version.
   8  */
   9
  10 #include "basic_asm.h"
  11
  12 /* long signal_self(pid_t pid, int sig); */
  13 FUNC_START(signal_self)
  14         li      r0,37 /* sys_kill */
  15         /* r3 already has our pid in it */
  16         /* r4 already has signal type in it */
  17         sc
  18         bc      4,3,1f
  19         subfze  r3,r3
  20 1:      blr
  21 FUNC_END(signal_self)
  22
  23 /* long tm_signal_self(pid_t pid, int sig, int *ret); */
  24 FUNC_START(tm_signal_self)
  25         PUSH_BASIC_STACK(8)
  26         std     r5,STACK_FRAME_PARAM(0)(sp) /* ret */
  27         tbegin.
  28         beq     1f
  29         tsuspend.
  30         li      r0,37 /* sys_kill */
  31         /* r3 already has our pid in it */
  32         /* r4 already has signal type in it */
  33         sc
  34         ld      r5,STACK_FRAME_PARAM(0)(sp) /* ret */
  35         bc      4,3,2f
  36         subfze  r3,r3
  37 2:      std     r3,0(r5)
  38         tabort. 0
  39         tresume. /* Be nice to some cleanup, jumps back to tbegin then to 1: */
  40         /*
  41          * Transaction should be proper doomed and we should never get
  42          * here
  43          */
  44         li      r3,1
  45         POP_BASIC_STACK(8)
  46         blr
  47 1:      li      r3,0
  48         POP_BASIC_STACK(8)
  49         blr
  50 FUNC_END(tm_signal_self)