1/* $NetBSD: sigsetjmp.S,v 1.8 2005/09/17 11:49:39 tsutsui Exp $ */ 2 3/*- 4 * Copyright (c) 1991, 1993, 1995, 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Havard Eidnes. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h> 36__FBSDID("$FreeBSD$"); 37#if defined(LIBC_SCCS) && !defined(lint) 38 ASMSTR("from: @(#)setjmp.s 8.1 (Berkeley) 6/4/93") 39 ASMSTR("$NetBSD: sigsetjmp.S,v 1.8 2005/09/17 11:49:39 tsutsui Exp $") 40#endif /* LIBC_SCCS and not lint */ 41 42#include "SYS.h" 43 44#ifdef __ABICALLS__ 45 .abicalls 46#endif 47 48/* 49 * C library -- sigsetjmp, siglongjmp 50 * 51 * siglongjmp(a,v) 52 * will generate a "return(v)" from 53 * the last call to 54 * sigsetjmp(a, savemask) 55 * by restoring registers from the stack, 56 * and dependent on savemask restores the 57 * signal mask. 58 */ 59 60LEAF(sigsetjmp) 61 PIC_PROLOGUE(sigsetjmp) 62 63 bne a1, zero, 1f # do saving of signal mask? 64 PIC_TAILCALL(_setjmp) 65 661: PIC_TAILCALL(setjmp) 67END(sigsetjmp) 68 69LEAF(siglongjmp) 70 PIC_PROLOGUE(siglongjmp) 71 REG_L t0, (_JB_MAGIC * SZREG)(a0) 72 REG_LI t1, _JB_MAGIC__SETJMP 73 bne t0, t1, 1f # setjmp or _setjmp magic? 74 PIC_TAILCALL(_longjmp) 751: PIC_TAILCALL(longjmp) 76END(siglongjmp) 77