1 /* $NetBSD: brk.S,v 1.6 2003/08/07 16:42:04 agc Exp $ */
4 * Copyright (c) 1990 The Regents of the University of California.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * from: @(#)brk.s 5.2 (Berkeley) 12/17/90
34 #include <machine/asm.h>
35 __FBSDID("$FreeBSD$");
47 .globl _C_LABEL(minbrk)
48 .type _C_LABEL(minbrk),#object
53 * Change the data segment size
66 /* Get the minimum allowable brk address */
70 * Valid the address specified and set to the minimum
71 * if the address is below minbrk.
77 bcs PIC_SYM(CERROR, PLT)
85 /* Store the new address in curbrk */
88 /* Return 0 for success */
95 .word _GLOBAL_OFFSET_TABLE_ - (.L1+4)
98 .word PIC_SYM(_C_LABEL(minbrk), GOT)
100 .word PIC_SYM(CURBRK, GOT)