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 * @(#)setjmp.s 5.1 (Berkeley) 4/23/90" 37 */ 38 39#if defined(LIBC_SCCS) && !defined(lint) 40 .text 41 .asciz "$Id: sigsetjmp.S,v 1.1 1993/12/05 13:01:05 ats Exp $" 42#endif /* LIBC_SCCS and not lint */ 43#include <machine/asm.h> 44__FBSDID("$FreeBSD$"); 45 46#include "SYS.h" 47 48/*- 49 * TODO: 50 * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, 51 * remove the other *jmp functions and define everything in terms 52 * of the renamed functions. This requires compiler support for 53 * the renamed functions (introduced in gcc-2.5.3; previous versions 54 * only supported *jmp with 0 or 1 leading underscores). 55 * 56 * Restore _all_ the registers and the signal mask atomically. Can 57 * use sigreturn() if sigreturn() works. 58 */ 59 60ENTRY(sigsetjmp) 61 movl 8(%esp),%eax 62 movl 4(%esp),%ecx 63 movl %eax,44(%ecx) 64 testl %eax,%eax 65 jz 2f 66 PIC_PROLOGUE 67 leal 28(%ecx), %eax 68 pushl %eax /* (sigset_t*)oset */ 69 pushl $0 /* (sigset_t*)set */ 70 pushl $1 /* SIG_BLOCK */ 71 call PIC_PLT(CNAME(_sigprocmask)) 72 addl $12,%esp 73 PIC_EPILOGUE 74 movl 4(%esp),%ecx 752: 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 24(%ecx) 83 xorl %eax,%eax 84 ret 85 86 .weak CNAME(siglongjmp); 87 .set CNAME(siglongjmp),CNAME(__siglongjmp); 88ENTRY(__siglongjmp); 89 movl 4(%esp),%edx 90 cmpl $0,44(%edx) 91 jz 2f 92 PIC_PROLOGUE 93 pushl $0 /* (sigset_t*)oset */ 94 leal 28(%edx), %eax 95 pushl %eax /* (sigset_t*)set */ 96 pushl $3 /* SIG_SETMASK */ 97 call PIC_PLT(CNAME(_sigprocmask)) 98 addl $12,%esp 99 PIC_EPILOGUE 100 movl 4(%esp),%edx 1012: movl 8(%esp),%eax 102 movl 0(%edx),%ecx 103 movl 4(%edx),%ebx 104 movl 8(%edx),%esp 105 movl 12(%edx),%ebp 106 movl 16(%edx),%esi 107 movl 20(%edx),%edi 108 fninit 109 fldcw 24(%edx) 110 testl %eax,%eax 111 jnz 1f 112 incl %eax 1131: movl %ecx,0(%esp) 114 ret 115