1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90 37 * $Id: setjmp.S,v 1.5 1994/01/27 06:34:06 mycroft Exp $ 38 */ 39 40#if defined(LIBC_SCCS) 41 .text 42 .asciz "$Id: setjmp.S,v 1.5 1994/01/27 06:34:06 mycroft Exp $" 43#endif 44 45/* 46 * C library -- _setjmp, _longjmp 47 * 48 * longjmp(a,v) 49 * will generate a "return(v)" from the last call to 50 * setjmp(a) 51 * by restoring registers from the stack. 52 * The previous signal state is restored. 53 */ 54 55#include "DEFS.h" 56#include "SYS.h" 57 58ENTRY(setjmp) 59 pushl $0 60#ifdef PIC 61 call PIC_PLT(_sigblock) 62#else 63 call _sigblock 64#endif 65 popl %edx 66 movl 4(%esp),%ecx 67 movl 0(%esp),%edx 68 movl %edx, 0(%ecx) 69 movl %ebx, 4(%ecx) 70 movl %esp, 8(%ecx) 71 movl %ebp,12(%ecx) 72 movl %esi,16(%ecx) 73 movl %edi,20(%ecx) 74 movl %eax,24(%ecx) 75 xorl %eax,%eax 76 ret 77 78ENTRY(longjmp) 79 movl 4(%esp),%edx 80 pushl 24(%edx) 81#ifdef PIC 82 call PIC_PLT(_sigsetmask) 83#else 84 call _sigsetmask 85#endif 86 popl %eax 87 movl 4(%esp),%edx 88 movl 8(%esp),%eax 89 movl 0(%edx),%ecx 90 movl 4(%edx),%ebx 91 movl 8(%edx),%esp 92 movl 12(%edx),%ebp 93 movl 16(%edx),%esi 94 movl 20(%edx),%edi 95 testl %eax,%eax 96 jnz 1f 97 incl %eax 981: movl %ecx,0(%esp) 99 ret 100