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 33#if defined(LIBC_SCCS) && !defined(lint) 34 .text 35 .asciz "$Id: sigsetjmp.S,v 1.1 1993/12/05 13:01:05 ats Exp $" 36#endif /* LIBC_SCCS and not lint */ 37#include <machine/asm.h> 38#include "SYS.h" 39 40/*- 41 * TODO: 42 * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, 43 * remove the other *jmp functions and define everything in terms 44 * of the renamed functions. This requires compiler support for 45 * the renamed functions (introduced in gcc-2.5.3; previous versions 46 * only supported *jmp with 0 or 1 leading underscores). 47 * 48 * Restore _all_ the registers and the signal mask atomically. Can 49 * use sigreturn() if sigreturn() works. 50 */ 51 52ENTRY(sigsetjmp) 53 movl 8(%esp),%eax 54 movl 4(%esp),%ecx 55 movl %eax,44(%ecx) 56 testl %eax,%eax 57 jz 2f 58 leal 28(%ecx), %eax 59 pushl %eax /* (sigset_t*)oset */ 60 pushl $0 /* (sigset_t*)set */ 61 pushl $1 /* SIG_BLOCK */ 62 call __libc_sigprocmask 63 addl $12,%esp 64 movl 4(%esp),%ecx 652: movl 0(%esp),%edx 66 movl %edx, 0(%ecx) 67 movl %ebx, 4(%ecx) 68 movl %esp, 8(%ecx) 69 movl %ebp,12(%ecx) 70 movl %esi,16(%ecx) 71 movl %edi,20(%ecx) 72 fnstcw 24(%ecx) 73 xorl %eax,%eax 74 ret 75END(sigsetjmp) 76 77 WEAK_REFERENCE(__siglongjmp, siglongjmp) 78ENTRY(__siglongjmp) 79 movl 4(%esp),%edx 80 cmpl $0,44(%edx) 81 jz 2f 82 pushl $0 /* (sigset_t*)oset */ 83 leal 28(%edx), %eax 84 pushl %eax /* (sigset_t*)set */ 85 pushl $3 /* SIG_SETMASK */ 86 call __libc_sigprocmask 87 addl $12,%esp 88 movl 4(%esp),%edx 892: movl 8(%esp),%eax 90 movl 0(%edx),%ecx 91 movl 4(%edx),%ebx 92 movl 8(%edx),%esp 93 movl 12(%edx),%ebp 94 movl 16(%edx),%esi 95 movl 20(%edx),%edi 96 fldcw 24(%edx) 97 testl %eax,%eax 98 jnz 1f 99 incl %eax 1001: movl %ecx,0(%esp) 101 ret 102END(__siglongjmp) 103 104 .section .note.GNU-stack,"",%progbits 105