1/* $NetBSD: _setjmp.S,v 1.6 2004/12/07 08:20:07 martin Exp $ */ 2 3/* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp 36 */ 37 38#include <machine/asm.h> 39#if defined(LIBC_SCCS) && !defined(lint) 40#if 0 41 .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" 42#else 43 RCSID("$NetBSD: _setjmp.S,v 1.6 2004/12/07 08:20:07 martin Exp $") 44#endif 45#endif /* LIBC_SCCS and not lint */ 46 47/* 48 * C library -- _setjmp, _longjmp 49 * 50 * _longjmp(a,v) 51 * will generate a "return(v?v:1)" from 52 * the last call to 53 * _setjmp(a) 54 * The previous signal state is NOT restored. 55 */ 56 57ENTRY(_setjmp) 58 stx %sp, [%o0+0] /* store caller's stack pointer */ 59 stx %o7, [%o0+8] /* and return pc */ 60 retl 61 clr %o0 ! return 0 62 63ENTRY(_longjmp) 64 save %sp, -CC64FSZ, %sp 65 flushw 66 /* 67 * We restore the saved stack pointer to %fp, then issue 68 * a `restore' instruction which will reload the register 69 * window from the stack. 70 */ 71 ldx [%i0+8], %i7 72 ldx [%i0+0], %fp 73 mov 1, %i0 74 movrnz %i1, %i1, %i0 ! compute v ? v : 1 75 ret 76 restore 77