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- /* brk system call for Linux/ppc.
- Copyright (C) 1995, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- #include <features.h>
- #include "ppc_asm.h"
- #define _ERRNO_H 1
- #include <bits/errno.h>
- #include <sys/syscall.h>
- #ifdef __NR_brk
- #ifdef __PIC__
- .section .bss
- .align 4
- .globl __curbrk
- .hidden __curbrk
- __curbrk: .skip 4
- .type __curbrk,@object
- .size __curbrk,4
- #else
- .comm __curbrk, 4,4
- #endif
- .text
- .globl brk
- .type brk,@function
- .align 2
- brk:
- stwu r1,-16(r1)
- stw r3,8(r1)
- li 0, __NR_brk;
- sc
- lwz r6,8(r1)
- #ifdef __PIC__
- mflr r4
- # ifdef HAVE_ASM_PPC_REL16
- bcl 20,31,1f
- 1: mflr r5
- addis r5,r5,_GLOBAL_OFFSET_TABLE_-1b@ha
- addi r5,r5,_GLOBAL_OFFSET_TABLE_-1b@l
- # else
- bl _GLOBAL_OFFSET_TABLE_@local-4
- mflr r5
- # endif
- lwz r5,__curbrk@got(r5)
- mtlr r4
- stw r3,0(r5)
- #else
- lis r4,__curbrk@ha
- stw r3,__curbrk@l(r4)
- #endif
- cmplw r6,r3
- addi r1,r1,16
- li r3,0
- blelr+
- li r3,ENOMEM
- b __syscall_error
- .size brk,.-brk
- libc_hidden_def(brk)
- #endif
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