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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#include <machine/asm.h> 34/* 35 * C library -- _setjmp, _longjmp 36 * 37 * _longjmp(a,v) 38 * will generate a "return(v)" from the last call to 39 * _setjmp(a) 40 * by restoring registers from the environment 'a'. 41 * The previous signal state is NOT restored. 42 */ 43 44ENTRY(_setjmp) 45 movl 4(%esp),%eax 46 movl 0(%esp),%edx 47 movl %edx, 0(%eax) /* rta */ 48 movl %ebx, 4(%eax) 49 movl %esp, 8(%eax) 50 movl %ebp,12(%eax) 51 movl %esi,16(%eax) 52 movl %edi,20(%eax) 53 fnstcw 24(%eax) 54 xorl %eax,%eax 55 ret 56END(_setjmp) 57 58 WEAK_REFERENCE(___longjmp, _longjmp) 59ENTRY(___longjmp) 60 movl 4(%esp),%edx 61 movl 8(%esp),%eax 62 movl 0(%edx),%ecx 63 movl 4(%edx),%ebx 64 movl 8(%edx),%esp 65 movl 12(%edx),%ebp 66 movl 16(%edx),%esi 67 movl 20(%edx),%edi 68 fldcw 24(%edx) 69 testl %eax,%eax 70 jnz 1f 71 incl %eax 721: movl %ecx,0(%esp) 73 ret 74END(___longjmp) 75 76 .section .note.GNU-stack,"",%progbits 77