717d9cdd57
1) Changed LIB_SCCS and SYSLIB_SCCS to LIB_RCS and SYSLIB_RCS. 2) Changed sccsid[] variables to rcsid[] 3) Moved all RCSID strings into .text 4) Converted all SCCSID's to RCS $Id$'s 5) Added missing $Id$'s after copyright.
93 lines
2.6 KiB
ArmAsm
93 lines
2.6 KiB
ArmAsm
/*-
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* William Jolitz.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $Id: brk.S,v 1.1 1994/08/05 01:18:39 wollman Exp $
|
|
*/
|
|
|
|
#if defined(SYSLIBC_RCS) && !defined(lint)
|
|
.text
|
|
.asciz "$Id$"
|
|
#endif /* SYSLIBC_RCS and not lint */
|
|
|
|
#include "SYS.h"
|
|
|
|
#define SYS_brk 17
|
|
|
|
.globl curbrk
|
|
.globl minbrk
|
|
ENTRY(_brk)
|
|
jmp ok
|
|
|
|
ENTRY(brk)
|
|
#ifdef PIC
|
|
movl 4(%esp),%eax
|
|
PIC_PROLOGUE
|
|
movl PIC_GOT(curbrk),%edx # set up GOT addressing
|
|
movl PIC_GOT(minbrk),%ecx #
|
|
cmpl %eax,(%ecx)
|
|
PIC_EPILOGUE
|
|
jl ok
|
|
movl (%ecx),%eax
|
|
movl %eax,4(%esp)
|
|
ok:
|
|
lea SYS_brk,%eax
|
|
LCALL(7,0)
|
|
jb err
|
|
movl 4(%esp),%eax
|
|
movl %eax,(%edx)
|
|
movl $0,%eax
|
|
ret
|
|
err:
|
|
jmp PIC_PLT(cerror)
|
|
|
|
#else
|
|
|
|
movl 4(%esp),%eax
|
|
cmpl %eax,minbrk
|
|
jl ok
|
|
movl minbrk,%eax
|
|
movl %eax,4(%esp)
|
|
ok:
|
|
lea SYS_brk,%eax
|
|
LCALL(7,0)
|
|
jb err
|
|
movl 4(%esp),%eax
|
|
movl %eax,curbrk
|
|
movl $0,%eax
|
|
ret
|
|
err:
|
|
jmp cerror
|
|
#endif
|