1ca987d46SWarner Losh/*- 2ca987d46SWarner Losh * Copyright (c) 1990 The Regents of the University of California. 3ca987d46SWarner Losh * All rights reserved. 4ca987d46SWarner Losh * 5ca987d46SWarner Losh * This code is derived from software contributed to Berkeley by 6ca987d46SWarner Losh * William Jolitz. 7ca987d46SWarner Losh * 8ca987d46SWarner Losh * Redistribution and use in source and binary forms, with or without 9ca987d46SWarner Losh * modification, are permitted provided that the following conditions 10ca987d46SWarner Losh * are met: 11ca987d46SWarner Losh * 1. Redistributions of source code must retain the above copyright 12ca987d46SWarner Losh * notice, this list of conditions and the following disclaimer. 13ca987d46SWarner Losh * 2. Redistributions in binary form must reproduce the above copyright 14ca987d46SWarner Losh * notice, this list of conditions and the following disclaimer in the 15ca987d46SWarner Losh * documentation and/or other materials provided with the distribution. 16ca987d46SWarner Losh * 3. Neither the name of the University nor the names of its contributors 17ca987d46SWarner Losh * may be used to endorse or promote products derived from this software 18ca987d46SWarner Losh * without specific prior written permission. 19ca987d46SWarner Losh * 20ca987d46SWarner Losh * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21ca987d46SWarner Losh * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22ca987d46SWarner Losh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23ca987d46SWarner Losh * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24ca987d46SWarner Losh * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25ca987d46SWarner Losh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26ca987d46SWarner Losh * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27ca987d46SWarner Losh * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28ca987d46SWarner Losh * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29ca987d46SWarner Losh * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30ca987d46SWarner Losh * SUCH DAMAGE. 31ca987d46SWarner Losh */ 32ca987d46SWarner Losh 33ca987d46SWarner Losh#if defined(LIBC_RCS) && !defined(lint) 34ca987d46SWarner Losh .text 35ca987d46SWarner Losh#endif /* LIBC_RCS and not lint */ 36ca987d46SWarner Losh 37ca987d46SWarner Losh/* 38ca987d46SWarner Losh * C library -- _setjmp, _longjmp 39ca987d46SWarner Losh * 40ca987d46SWarner Losh * _longjmp(a,v) 41ca987d46SWarner Losh * will generate a "return(v)" from the last call to 42ca987d46SWarner Losh * _setjmp(a) 43ca987d46SWarner Losh * by restoring registers from the environment 'a'. 44ca987d46SWarner Losh * The previous signal state is NOT restored. 45ca987d46SWarner Losh */ 46ca987d46SWarner Losh 47ca987d46SWarner Losh#include <machine/asm.h> 48ca987d46SWarner Losh 49ca987d46SWarner LoshENTRY(_setjmp) 50ca987d46SWarner Losh movl 4(%esp),%eax 51ca987d46SWarner Losh movl 0(%esp),%edx 52ca987d46SWarner Losh movl %edx, 0(%eax) /* rta */ 53ca987d46SWarner Losh movl %ebx, 4(%eax) 54ca987d46SWarner Losh movl %esp, 8(%eax) 55ca987d46SWarner Losh movl %ebp,12(%eax) 56ca987d46SWarner Losh movl %esi,16(%eax) 57ca987d46SWarner Losh movl %edi,20(%eax) 58ca987d46SWarner Losh xorl %eax,%eax 59ca987d46SWarner Losh ret 60ca987d46SWarner LoshEND(_setjmp) 61ca987d46SWarner Losh 62ca987d46SWarner LoshENTRY(_longjmp) 63ca987d46SWarner Losh movl 4(%esp),%edx 64ca987d46SWarner Losh movl 8(%esp),%eax 65ca987d46SWarner Losh movl 0(%edx),%ecx 66ca987d46SWarner Losh movl 4(%edx),%ebx 67ca987d46SWarner Losh movl 8(%edx),%esp 68ca987d46SWarner Losh movl 12(%edx),%ebp 69ca987d46SWarner Losh movl 16(%edx),%esi 70ca987d46SWarner Losh movl 20(%edx),%edi 71ca987d46SWarner Losh testl %eax,%eax 72ca987d46SWarner Losh jnz 1f 73ca987d46SWarner Losh incl %eax 74ca987d46SWarner Losh1: movl %ecx,0(%esp) 75ca987d46SWarner Losh ret 76ca987d46SWarner LoshEND(_longjmp) 77*69f6399cSJohn Baldwin 78*69f6399cSJohn Baldwin .section .note.GNU-stack,"",%progbits 79