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 37#if defined(LIBC_SCCS) && !defined(lint) 38 .asciz "@(#)setjmp.s 5.1 (Berkeley) 4/23/90" 39#endif /* LIBC_SCCS and not lint */ 40 41/* 42 * C library -- _setjmp, _longjmp 43 * 44 * longjmp(a,v) 45 * will generate a "return(v)" from the last call to 46 * setjmp(a) 47 * by restoring registers from the environment 'a'. 48 * The previous signal state is restored. 49 */ 50 51#include "DEFS.h" 52#include "SYS.h" 53 54ENTRY(setjmp) 55 pushl $0 56 call PIC_PLT(_sigblock) 57 popl %edx 58 movl 4(%esp),%ecx 59 movl 0(%esp),%edx 60 movl %edx, 0(%ecx) 61 movl %ebx, 4(%ecx) 62 movl %esp, 8(%ecx) 63 movl %ebp,12(%ecx) 64 movl %esi,16(%ecx) 65 movl %edi,20(%ecx) 66 movl %eax,24(%ecx) 67 fnstcw 28(%ecx) 68 xorl %eax,%eax 69 ret 70 71ENTRY(longjmp) 72 movl 4(%esp),%edx 73 pushl 24(%edx) 74 call PIC_PLT(_sigsetmask) /* XXX this is not reentrant */ 75 popl %eax 76 movl 4(%esp),%edx 77 movl 8(%esp),%eax 78 movl 0(%edx),%ecx 79 movl 4(%edx),%ebx 80 movl 8(%edx),%esp 81 movl 12(%edx),%ebp 82 movl 16(%edx),%esi 83 movl 20(%edx),%edi 84 fninit 85 fldcw 28(%edx) 86 testl %eax,%eax 87 jnz 1f 88 incl %eax 891: movl %ecx,0(%esp) 90 ret 91