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 * 4. 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 $" 38#endif /* LIBC_SCCS and not lint */ 39#include <machine/asm.h> 40__FBSDID("$FreeBSD$"); 41 42#include "SYS.h" 43 44/*- 45 * TODO: 46 * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, 47 * remove the other *jmp functions and define everything in terms 48 * of the renamed functions. This requires compiler support for 49 * the renamed functions (introduced in gcc-2.5.3; previous versions 50 * only supported *jmp with 0 or 1 leading underscores). 51 * 52 * Restore _all_ the registers and the signal mask atomically. Can 53 * use sigreturn() if sigreturn() works. 54 */ 55 56ENTRY(sigsetjmp) 57 movl 8(%esp),%eax 58 movl 4(%esp),%ecx 59 movl %eax,44(%ecx) 60 testl %eax,%eax 61 jz 2f 62 PIC_PROLOGUE 63 leal 28(%ecx), %eax 64 pushl %eax /* (sigset_t*)oset */ 65 pushl $0 /* (sigset_t*)set */ 66 pushl $1 /* SIG_BLOCK */ 67 call PIC_PLT(CNAME(_sigprocmask)) 68 addl $12,%esp 69 PIC_EPILOGUE 70 movl 4(%esp),%ecx 712: movl 0(%esp),%edx 72 movl %edx, 0(%ecx) 73 movl %ebx, 4(%ecx) 74 movl %esp, 8(%ecx) 75 movl %ebp,12(%ecx) 76 movl %esi,16(%ecx) 77 movl %edi,20(%ecx) 78 fnstcw 24(%ecx) 79 xorl %eax,%eax 80 ret 81END(sigsetjmp) 82 83 .weak CNAME(siglongjmp); 84 .set CNAME(siglongjmp),CNAME(__siglongjmp) 85ENTRY(__siglongjmp) 86 movl 4(%esp),%edx 87 cmpl $0,44(%edx) 88 jz 2f 89 PIC_PROLOGUE 90 pushl $0 /* (sigset_t*)oset */ 91 leal 28(%edx), %eax 92 pushl %eax /* (sigset_t*)set */ 93 pushl $3 /* SIG_SETMASK */ 94 call PIC_PLT(CNAME(_sigprocmask)) 95 addl $12,%esp 96 PIC_EPILOGUE 97 movl 4(%esp),%edx 982: movl 8(%esp),%eax 99 movl 0(%edx),%ecx 100 movl 4(%edx),%ebx 101 movl 8(%edx),%esp 102 movl 12(%edx),%ebp 103 movl 16(%edx),%esi 104 movl 20(%edx),%edi 105 fninit 106 fldcw 24(%edx) 107 testl %eax,%eax 108 jnz 1f 109 incl %eax 1101: movl %ecx,0(%esp) 111 ret 112END(__siglongjmp) 113