1/* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This software was developed by the Computer Systems Engineering group 6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7 * contributed to Berkeley. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp 34 */ 35 36#if defined(LIBC_SCCS) && !defined(lint) 37#if 0 38 .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" 39#else 40 RCSID("$NetBSD: _setjmp.S,v 1.4 1998/10/08 02:27:59 eeh Exp $") 41#endif 42#endif /* LIBC_SCCS and not lint */ 43 44#include <machine/asm.h> 45__FBSDID("$FreeBSD$"); 46 47#define _JB_FP 0x0 48#define _JB_PC 0x8 49#define _JB_SP 0x10 50 51 .register %g2,#ignore 52 .register %g3,#ignore 53 54/* 55 * C library -- setjmp, longjmp 56 * 57 * longjmp(a,v) 58 * will generate a "return(v?v:1)" from 59 * the last call to 60 * setjmp(a) 61 * by restoring the previous context. 62 */ 63 64ENTRY(_setjmp) 65 stx %sp, [%o0 + _JB_SP] 66 stx %o7, [%o0 + _JB_PC] 67 stx %fp, [%o0 + _JB_FP] 68 retl 69 clr %o0 70END(_setjmp) 71 72ENTRY(_longjmp) 73 mov 1, %g1 74 movrnz %o1, %o1, %g1 75 mov %o0, %g2 76 ldx [%g2 + _JB_FP], %g3 771: cmp %fp, %g3 78 bl,a 1b 79 restore 80 be,a 2f 81 ldx [%g2 + _JB_SP], %o0 82 83.Lbotch: 84 illtrap 85 862: cmp %o0, %sp 87 bge,a 3f 88 mov %o0, %sp 89 b,a .Lbotch 90 nop 913: ldx [%g2 + _JB_PC], %o7 92 retl 93 mov %g1, %o0 94END(_longjmp) 95