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#ifdef PIC 64 subl $12,%esp /* make the stack 16-byte aligned */ 65#endif 66 leal 28(%ecx), %eax 67 pushl %eax /* (sigset_t*)oset */ 68 pushl $0 /* (sigset_t*)set */ 69 pushl $1 /* SIG_BLOCK */ 70 call PIC_PLT(CNAME(_sigprocmask)) 71#ifdef PIC 72 addl $24,%esp 73#else 74 addl $12,%esp 75#endif 76 PIC_EPILOGUE 77 movl 4(%esp),%ecx 782: movl 0(%esp),%edx 79 movl %edx, 0(%ecx) 80 movl %ebx, 4(%ecx) 81 movl %esp, 8(%ecx) 82 movl %ebp,12(%ecx) 83 movl %esi,16(%ecx) 84 movl %edi,20(%ecx) 85 fnstcw 24(%ecx) 86 xorl %eax,%eax 87 ret 88END(sigsetjmp) 89 90 WEAK_REFERENCE(__siglongjmp, siglongjmp) 91ENTRY(__siglongjmp) 92 movl 4(%esp),%edx 93 cmpl $0,44(%edx) 94 jz 2f 95 PIC_PROLOGUE 96#ifdef PIC 97 subl $12,%esp /* make the stack 16-byte aligned */ 98#endif 99 pushl $0 /* (sigset_t*)oset */ 100 leal 28(%edx), %eax 101 pushl %eax /* (sigset_t*)set */ 102 pushl $3 /* SIG_SETMASK */ 103 call PIC_PLT(CNAME(_sigprocmask)) 104#ifdef PIC 105 addl $24,%esp 106#else 107 addl $12,%esp 108#endif 109 PIC_EPILOGUE 110 movl 4(%esp),%edx 1112: movl 8(%esp),%eax 112 movl 0(%edx),%ecx 113 movl 4(%edx),%ebx 114 movl 8(%edx),%esp 115 movl 12(%edx),%ebp 116 movl 16(%edx),%esi 117 movl 20(%edx),%edi 118 fldcw 24(%edx) 119 testl %eax,%eax 120 jnz 1f 121 incl %eax 1221: movl %ecx,0(%esp) 123 ret 124END(__siglongjmp) 125 126 .section .note.GNU-stack,"",%progbits 127