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 * 4. 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#if defined(LIBC_SCCS) && !defined(lint) 34 .asciz "@(#)_setjmp.s 5.1 (Berkeley) 4/23/90" 35#endif /* LIBC_SCCS and not lint */ 36#include <machine/asm.h> 37__FBSDID("$FreeBSD$"); 38 39/* 40 * C library -- _setjmp, _longjmp 41 * 42 * _longjmp(a,v) 43 * will generate a "return(v)" from the last call to 44 * _setjmp(a) 45 * by restoring registers from the environment 'a'. 46 * The previous signal state is NOT restored. 47 */ 48 49ENTRY(_setjmp) 50 movl 4(%esp),%eax 51 movl 0(%esp),%edx 52 movl %edx, 0(%eax) /* rta */ 53 movl %ebx, 4(%eax) 54 movl %esp, 8(%eax) 55 movl %ebp,12(%eax) 56 movl %esi,16(%eax) 57 movl %edi,20(%eax) 58 fnstcw 24(%eax) 59 xorl %eax,%eax 60 ret 61 62 .weak CNAME(_longjmp) 63 .set CNAME(_longjmp),CNAME(___longjmp) 64ENTRY(___longjmp) 65 movl 4(%esp),%edx 66 movl 8(%esp),%eax 67 movl 0(%edx),%ecx 68 movl 4(%edx),%ebx 69 movl 8(%edx),%esp 70 movl 12(%edx),%ebp 71 movl 16(%edx),%esi 72 movl 20(%edx),%edi 73 fninit 74 fldcw 24(%edx) 75 testl %eax,%eax 76 jnz 1f 77 incl %eax 781: movl %ecx,0(%esp) 79 ret 80