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/* Copyright (C) 1995 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <sysdep.h>
.data
.globl C_SYMBOL_NAME(__curbrk)
.text
.globl C_SYMBOL_NAME(syscall_error)
ENTRY (__sbrk)
movl %ebx, %edx
#ifdef PIC
/* Standard PIC nonsense to access `__curbrk' through the GOT. */
call .L0
.L0: popl %ecx
addl $_GLOBAL_OFFSET_TABLE_+[.-.L0], %ecx
movl C_SYMBOL_NAME(__curbrk@GOT)(%ecx), %ecx
movl (%ecx), %ebx
movl %ebx, %eax
testl %ebx, %ebx
jne .L1
/* We have to initialize `__curbrk' first. */
movl $SYS_ify(brk), %eax
int $0x80
movl %eax, (%ecx)
movl %eax, %ebx
.align 16, 0x90
.L1:
#else
movl C_SYMBOL_NAME(__curbrk), %ebx
movl %ebx, %eax
#endif
addl 4(%esp), %ebx
cmpl %ebx, %eax
je .L2
movl $SYS_ify(brk), %eax
int $0x80
cmpl %eax, %ebx
jne .L3
#ifdef PIC
xchgl %eax, (%ecx)
#else
xchgl %eax, C_SYMBOL_NAME(__curbrk)
#endif
.L2:
movl %edx, %ebx
ret
.align 16
.L3:
movl %edx, %ebx
jmp JUMPTARGET(syscall_error)
weak_alias (__sbrk, sbrk)
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