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 * from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90" 38 * $Id: sigsetjmp.S,v 1.2 1994/10/25 14:08:13 bde Exp $ 39 */ 40 41#if defined(LIBC_SCCS) && !defined(lint) 42 .asciz "$Id: sigsetjmp.S,v 1.2 1994/10/25 14:08:13 bde Exp $" 43#endif /* LIBC_SCCS and not lint */ 44 45#include "DEFS.h" 46#include "SYS.h" 47 48/*- 49 * TODO: 50 * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, 51 * remove the other *jmp functions and define everything in terms 52 * of the renamed functions. This requires compiler support for 53 * the renamed functions (introduced in gcc-2.5.3; previous versions 54 * only supported *jmp with 0 or 1 leading underscores). 55 * 56 * Use sigprocmask() instead of sigblock() and sigsetmask(), and 57 * check for and handle errors. 58 * 59 * Restore _all_ the registers and the signal mask atomically. Can 60 * use sigreturn() if sigreturn() works. 61 */ 62 63ENTRY(sigsetjmp) 64 movl 8(%esp),%eax 65 movl 4(%esp),%ecx 66 movl %eax,32(%ecx) 67 testl %eax,%eax 68 jz 1f 69 pushl $0 70 call PIC_PLT(_sigblock) 71 addl $4,%esp 72 movl 4(%esp),%ecx 73 movl %eax,24(%ecx) 741: movl 0(%esp),%edx 75 movl %edx, 0(%ecx) 76 movl %ebx, 4(%ecx) 77 movl %esp, 8(%ecx) 78 movl %ebp,12(%ecx) 79 movl %esi,16(%ecx) 80 movl %edi,20(%ecx) 81 fnstcw 28(%ecx) 82 xorl %eax,%eax 83 ret 84 85ENTRY(siglongjmp) 86 movl 4(%esp),%edx 87 cmpl $0,32(%edx) 88 jz 1f 89 pushl 24(%edx) 90 call PIC_PLT(_sigsetmask) 91 addl $4,%esp 921: movl 4(%esp),%edx 93 movl 8(%esp),%eax 94 movl 0(%edx),%ecx 95 movl 4(%edx),%ebx 96 movl 8(%edx),%esp 97 movl 12(%edx),%ebp 98 movl 16(%edx),%esi 99 movl 20(%edx),%edi 100 fninit 101 fldcw 28(%edx) 102 testl %eax,%eax 103 jnz 2f 104 incl %eax 1052: movl %ecx,0(%esp) 106 ret 107