lib/libc/arch/powerpc64/sys/sbrk.S

   1 /*      $NetBSD: sbrk.S,v 1.5 2014/08/23 02:24:22 matt Exp $    */
   2
   3 #include "SYS.h"
   4
   5         .hidden _C_LABEL(__curbrk)
   6         .globl  _C_LABEL(__curbrk)
   7
   8 #ifdef WEAK_ALIAS
   9 WEAK_ALIAS(sbrk, _sbrk)
  10 #endif
  11
  12 ENTRY(_sbrk)
  13         addis   %r8,%r2,_C_LABEL(__curbrk)@toc@ha
  14         ldptru  %r6,_C_LABEL(__curbrk)@toc@l(%r8)
  15         add     %r3,%r3,%r6
  16         mr      %r7,%r3                         # r7 = new break
  17         _DOSYSCALL(break)                       # break(new_break)
  18         bso     1f
  19         mr      %r3,%r6                         # set return value
  20         stptr   %r7,0(%r8)                      # record new break
  21         blr
  22 1:
  23         BRANCH_TO_CERROR()
  24 END(_sbrk)