/*- * 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. */ #include "SYS.h" #if defined(SYSLIBC_SCCS) .text .asciz "$OpenBSD: sbrk.S,v 1.3 1997/07/23 20:55:22 kstailey Exp $" #endif /* SYSLIBC_SCCS */ .globl _end .globl curbrk .data curbrk: .long _end .text ENTRY(sbrk) #ifdef PIC movl 4(%esp),%ecx PIC_PROLOGUE movl PIC_GOT(curbrk),%edx PIC_EPILOGUE movl (%edx),%eax addl %eax,4(%esp) movl $(SYS_break),%eax int $0x80 jc err PIC_PROLOGUE movl PIC_GOT(curbrk),%edx PIC_EPILOGUE movl (%edx),%eax addl %ecx,(%edx) ret err: jmp PIC_PLT(cerror) #else movl 4(%esp),%ecx movl curbrk,%eax addl %eax,4(%esp) movl $(SYS_break),%eax int $0x80 jc err movl curbrk,%eax addl %ecx,curbrk ret err: jmp cerror #endif