sigsetjmp.S revision 3851
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 1.1 1994/08/05 01:18:08 wollman Exp $ 39 */ 40 41#if defined(LIBC_SCCS) && !defined(lint) 42 .text 43 .asciz "$Id: sigsetjmp.S,v 1.1 1994/08/05 01:18:08 wollman Exp $" 44#endif /* LIBC_SCCS and not lint */ 45 46#include "DEFS.h" 47#include "SYS.h" 48 49/*- 50 * TODO: 51 * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, 52 * remove the other *jmp functions and define everything in terms 53 * of the renamed functions. This requires compiler support for 54 * the renamed functions (introduced in gcc-2.5.3; previous versions 55 * only supported *jmp with 0 or 1 leading underscores). 56 * 57 * Use sigprocmask() instead of sigblock() and sigsetmask(), and 58 * check for and handle errors. 59 * 60 * Restore _all_ the registers and the signal mask atomically. Can 61 * use sigreturn() if sigreturn() works. 62 */ 63 64ENTRY(sigsetjmp) 65 movl 8(%esp),%eax 66 movl 4(%esp),%ecx 67 movl %eax,32(%ecx) 68 testl %eax,%eax 69 jz 1f 70 pushl $0 71 call PIC_PLT(_sigblock) 72 addl $4,%esp 73 movl 4(%esp),%ecx 74 movl %eax,24(%ecx) 751: movl 0(%esp),%edx 76 movl %edx, 0(%ecx) 77 movl %ebx, 4(%ecx) 78 movl %esp, 8(%ecx) 79 movl %ebp,12(%ecx) 80 movl %esi,16(%ecx) 81 movl %edi,20(%ecx) 82 fnstcw 28(%ecx) 83 xorl %eax,%eax 84 ret 85 86ENTRY(siglongjmp) 87 movl 4(%esp),%edx 88 cmpl $0,32(%edx) 89 jz 1f 90 pushl 24(%edx) 91 call PIC_PLT(_sigsetmask) 92 addl $4,%esp 931: movl 4(%esp),%edx 94 movl 8(%esp),%eax 95 movl 0(%edx),%ecx 96 movl 4(%edx),%ebx 97 movl 8(%edx),%esp 98 movl 12(%edx),%ebp 99 movl 16(%edx),%esi 100 movl 20(%edx),%edi 101 fninit 102 fldcw 28(%edx) 103 testl %eax,%eax 104 jnz 2f 105 incl %eax 1062: movl %ecx,0(%esp) 107 ret 108