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/* brk system call for Linux/ia64
Copyright (C) 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Stephane Eranian <eranian@hpl.hp.com> and
Jes Sorensen, <Jes.Sorensen@cern.ch>, April 1999.
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <asm/unistd.h>
#include <asm/errno.h>
.text
.psr abi64
.psr lsb
.lsb
.global __curbrk
.data
.align 8
__curbrk:
data8 0
.weak ___brk_addr
___brk_addr = __curbrk
.text
.align 16
.global __brk
.proc __brk
__brk:
mov r15=__NR_brk
break.i __BREAK_SYSCALL
;;
cmp.ltu p6,p0=ret0,r32 /* r32 is the input register, even though we
haven't allocated a frame */
addl r9=@ltoff(__curbrk#),gp
;;
ld8 r9=[r9]
(p6) mov ret0=ENOMEM
(p6) br.cond.spnt.few __syscall_error
;;
st8 [r9]=ret0
mov ret0=0
br.ret.sptk.few rp
.endp __brk
.weak brk
brk = __brk
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