sysdeps/unix/sysv/linux/powerpc/powerpc64/brk.S

   1 /* brk system call for Linux.  PowerPC64 version.
   2    Copyright (C) 1995-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <sysdep.h>
  20 #define _ERRNO_H        1
  21 #include <bits/errno.h>
  22
  23         .comm   __curbrk,8,8
  24         .section        ".toc","aw"
  25 .LC__curbrk:
  26         .tc __curbrk[TC],__curbrk
  27         .section ".text"
  28 ENTRY (__brk)
  29         CALL_MCOUNT 1
  30
  31         std     r3,-8(r1)
  32         DO_CALL(SYS_ify(brk))
  33         ld      r6,-8(r1)
  34         ld      r5,.LC__curbrk@toc(r2)
  35         std     r3,0(r5)
  36         cmpld   r6,r3
  37         li      r3,0
  38         blelr+
  39         li      r3,ENOMEM
  40         TAIL_CALL_SYSCALL_ERROR
  41 END (__brk)
  42
  43 weak_alias (__brk, brk)