diff options
Diffstat (limited to 'lib/libc/sparc64/sys/brk.S')
| -rw-r--r-- | lib/libc/sparc64/sys/brk.S | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/lib/libc/sparc64/sys/brk.S b/lib/libc/sparc64/sys/brk.S new file mode 100644 index 0000000..0167c4e --- /dev/null +++ b/lib/libc/sparc64/sys/brk.S @@ -0,0 +1,65 @@ +/* + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This software was developed by the Computer Systems Engineering group + * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and + * contributed to Berkeley. + * + * 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. + * 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. + * + * from: Header: brk.s,v 1.3 92/06/25 12:56:05 mccanne Exp + */ + +#if defined(SYSLIBC_SCCS) && !defined(lint) + .asciz "@(#)brk.s 8.1 (Berkeley) 6/4/93" +#if 0 + RCSID("$NetBSD: brk.S,v 1.9 2000/07/25 20:15:40 mycroft Exp $") +#endif +#endif /* SYSLIBC_SCCS and not lint */ +#include <machine/asm.h> +__FBSDID("$FreeBSD$"); + +#include "SYS.h" + + .globl HIDENAME(curbrk) + .globl HIDENAME(minbrk) + +_SYSENTRY(brk) + PIC_PROLOGUE(%o3, %o2) + SET(HIDENAME(minbrk), %o2, %o3) + ldx [%o3], %o4 + cmp %o4, %o0 + movg %xcc, %o4, %o0 + mov %o0, %o4 + mov SYS_break, %g1 + ta %xcc, ST_SYSCALL + bcc,a,pt %xcc, 1f + nop + ERROR() +1: SET(HIDENAME(curbrk), %o2, %o3) + retl + stx %o4, [%o3] +_SYSEND(brk) |
