17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
58cd45542Sraf * Common Development and Distribution License (the "License").
68cd45542Sraf * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
218cd45542Sraf
227c478bd9Sstevel@tonic-gate /*
238cd45542Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
247c478bd9Sstevel@tonic-gate * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
27*7257d1b4Sraf #pragma weak _getustack = getustack
28*7257d1b4Sraf #pragma weak _setustack = setustack
297c478bd9Sstevel@tonic-gate
30*7257d1b4Sraf #include "lint.h"
317c478bd9Sstevel@tonic-gate #include <ucontext.h>
327c478bd9Sstevel@tonic-gate #include <sys/syscall.h>
337c478bd9Sstevel@tonic-gate
347c478bd9Sstevel@tonic-gate /*
357c478bd9Sstevel@tonic-gate * __getcontext() must be implemented in assembler, as opposed to
367c478bd9Sstevel@tonic-gate * the other members of the SYS_context family (see __getcontext.s)
377c478bd9Sstevel@tonic-gate * because we must be careful to get the precise context of the caller.
387c478bd9Sstevel@tonic-gate */
397c478bd9Sstevel@tonic-gate
407c478bd9Sstevel@tonic-gate int
__setcontext(const ucontext_t * ucp)417c478bd9Sstevel@tonic-gate __setcontext(const ucontext_t *ucp)
427c478bd9Sstevel@tonic-gate {
437c478bd9Sstevel@tonic-gate return (syscall(SYS_context, 1, ucp));
447c478bd9Sstevel@tonic-gate }
457c478bd9Sstevel@tonic-gate
467c478bd9Sstevel@tonic-gate int
getustack(stack_t ** spp)477c478bd9Sstevel@tonic-gate getustack(stack_t **spp)
487c478bd9Sstevel@tonic-gate {
497c478bd9Sstevel@tonic-gate return (syscall(SYS_context, 2, spp));
507c478bd9Sstevel@tonic-gate }
517c478bd9Sstevel@tonic-gate
527c478bd9Sstevel@tonic-gate int
setustack(stack_t * sp)537c478bd9Sstevel@tonic-gate setustack(stack_t *sp)
547c478bd9Sstevel@tonic-gate {
557c478bd9Sstevel@tonic-gate return (syscall(SYS_context, 3, sp));
567c478bd9Sstevel@tonic-gate }
57