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 57257d1b4Sraf * Common Development and Distribution License (the "License"). 67257d1b4Sraf * 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 */ 217257d1b4Sraf 227c478bd9Sstevel@tonic-gate/* 237257d1b4Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 27*9a70fc3bSMark J. Nelson .file "setjmp.s" 287257d1b4Sraf 297c478bd9Sstevel@tonic-gate/* 307c478bd9Sstevel@tonic-gate * The UCB setjmp(env) is the same as SYSV's sigsetjmp(env, 1) 317c478bd9Sstevel@tonic-gate * while _setjmp(env) is the same as SYSV's sigsetjmp(env, 0) 327c478bd9Sstevel@tonic-gate * Both longjmp(env, val) and _longjmp(env, val) are the same 337c478bd9Sstevel@tonic-gate * as SYSV's siglongjmp(env, val). 347c478bd9Sstevel@tonic-gate * 357c478bd9Sstevel@tonic-gate * These are #defined as such in /usr/ucbinclude/setjmp.h 367c478bd9Sstevel@tonic-gate * but setjmp/longjmp and _setjmp/_longjmp have historically 377c478bd9Sstevel@tonic-gate * been entry points in libucb, so for binary compatibility 387c478bd9Sstevel@tonic-gate * we implement them as tail calls into libc in order to make 397c478bd9Sstevel@tonic-gate * them appear as direct calls to sigsetjmp/siglongjmp, which 407c478bd9Sstevel@tonic-gate * is essential for the correct operation of sigsetjmp. 417c478bd9Sstevel@tonic-gate */ 427c478bd9Sstevel@tonic-gate 437c478bd9Sstevel@tonic-gate#include <sys/asm_linkage.h> 447c478bd9Sstevel@tonic-gate 457c478bd9Sstevel@tonic-gate ANSI_PRAGMA_WEAK(longjmp,function) 467c478bd9Sstevel@tonic-gate 477c478bd9Sstevel@tonic-gate ENTRY_NP(setjmp) 487c478bd9Sstevel@tonic-gate mov %o7, %g1 497c478bd9Sstevel@tonic-gate mov 1, %o1 507c478bd9Sstevel@tonic-gate call _sigsetjmp 517c478bd9Sstevel@tonic-gate mov %g1, %o7 527c478bd9Sstevel@tonic-gate SET_SIZE(setjmp) 537c478bd9Sstevel@tonic-gate 547c478bd9Sstevel@tonic-gate ENTRY_NP(_setjmp) 557c478bd9Sstevel@tonic-gate mov %o7, %g1 567c478bd9Sstevel@tonic-gate clr %o1 577c478bd9Sstevel@tonic-gate call _sigsetjmp 587c478bd9Sstevel@tonic-gate mov %g1, %o7 597c478bd9Sstevel@tonic-gate SET_SIZE(_setjmp) 607c478bd9Sstevel@tonic-gate 617257d1b4Sraf ENTRY_NP(longjmp) 627c478bd9Sstevel@tonic-gate mov %o7, %g1 637c478bd9Sstevel@tonic-gate call _siglongjmp 647c478bd9Sstevel@tonic-gate mov %g1, %o7 657257d1b4Sraf SET_SIZE(longjmp) 66