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 * @(#)setjmp.s 5.1 (Berkeley) 4/23/90" 33 */ 34 35#if defined(LIBC_SCCS) && !defined(lint) 36 .text 37 .asciz "$Id: sigsetjmp.S,v 1.1 1993/12/05 13:01:05 ats Exp $" 38#endif /* LIBC_SCCS and not lint */ 39#include <machine/asm.h> 40#include "SYS.h" 41 42/*- 43 * TODO: 44 * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, 45 * remove the other *jmp functions and define everything in terms 46 * of the renamed functions. This requires compiler support for 47 * the renamed functions (introduced in gcc-2.5.3; previous versions 48 * only supported *jmp with 0 or 1 leading underscores). 49 * 50 * Restore _all_ the registers and the signal mask atomically. Can 51 * use sigreturn() if sigreturn() works. 52 */ 53 54ENTRY(sigsetjmp) 55 movl 8(%esp),%eax 56 movl 4(%esp),%ecx 57 movl %eax,44(%ecx) 58 testl %eax,%eax 59 jz 2f 60 leal 28(%ecx), %eax 61 pushl %eax /* (sigset_t*)oset */ 62 pushl $0 /* (sigset_t*)set */ 63 pushl $1 /* SIG_BLOCK */ 64 call __libc_sigprocmask 65 addl $12,%esp 66 movl 4(%esp),%ecx 672: movl 0(%esp),%edx 68 movl %edx, 0(%ecx) 69 movl %ebx, 4(%ecx) 70 movl %esp, 8(%ecx) 71 movl %ebp,12(%ecx) 72 movl %esi,16(%ecx) 73 movl %edi,20(%ecx) 74 fnstcw 24(%ecx) 75 xorl %eax,%eax 76 ret 77END(sigsetjmp) 78 79 WEAK_REFERENCE(__siglongjmp, siglongjmp) 80ENTRY(__siglongjmp) 81 movl 4(%esp),%edx 82 cmpl $0,44(%edx) 83 jz 2f 84 pushl $0 /* (sigset_t*)oset */ 85 leal 28(%edx), %eax 86 pushl %eax /* (sigset_t*)set */ 87 pushl $3 /* SIG_SETMASK */ 88 call __libc_sigprocmask 89 addl $12,%esp 90 movl 4(%esp),%edx 912: movl 8(%esp),%eax 92 movl 0(%edx),%ecx 93 movl 4(%edx),%ebx 94 movl 8(%edx),%esp 95 movl 12(%edx),%ebp 96 movl 16(%edx),%esi 97 movl 20(%edx),%edi 98 fldcw 24(%edx) 99 testl %eax,%eax 100 jnz 1f 101 incl %eax 1021: movl %ecx,0(%esp) 103 ret 104END(__siglongjmp) 105 106 .section .note.GNU-stack,"",%progbits 107