diff options
Diffstat (limited to 'lib/libc/ia64/sys/sbrk.S')
| -rw-r--r-- | lib/libc/ia64/sys/sbrk.S | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/lib/libc/ia64/sys/sbrk.S b/lib/libc/ia64/sys/sbrk.S new file mode 100644 index 0000000..03e0766 --- /dev/null +++ b/lib/libc/ia64/sys/sbrk.S @@ -0,0 +1,53 @@ +/* $FreeBSD$ */ +/* $NetBSD: sbrk.S,v 1.4 1996/10/17 03:08:20 cgd Exp $ */ + +/* + * Copyright (c) 1994, 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Chris G. Demetriou + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +#include "SYS.h" + + .globl _end + + .data +EXPORT(curbrk) + .quad _end + + .text +ENTRY(sbrk, 1) + alloc r14=ar.pfs,1,2,0,0 + + add loc0=@ltoff(curbrk),gp ;; + ld8 loc0=[loc0] ;; + ld8 loc1=[loc0] + cmp.eq p6,p0=in0,r0 +(p6) br.dpnt.few 1f + add in0=r14,in0 + CALLSYS_ERROR(break) + st8 [loc0]=in0 +1: mov ret0=loc1 + br.ret.sptk.few rp +END(sbrk) |
