/* 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, see <http://www.gnu.org/licenses/>. */ #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