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 37#if defined(LIBC_RCS) && !defined(lint) 38 .text 39 .asciz "$FreeBSD$" 40#endif /* LIBC_RCS and not lint */ 41 42#include "DEFS.h" 43#include "SYS.h" 44 45/*- 46 * TODO: 47 * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, 48 * remove the other *jmp functions and define everything in terms 49 * of the renamed functions. This requires compiler support for 50 * the renamed functions (introduced in gcc-2.5.3; previous versions 51 * only supported *jmp with 0 or 1 leading underscores). 52 * 53 * Restore _all_ the registers and the signal mask atomically. Can 54 * use sigreturn() if sigreturn() works. 55 */ 56 57ENTRY(sigsetjmp) 58 movl 8(%esp),%eax 59 movl 4(%esp),%ecx 60 movl %eax,44(%ecx) 61 testl %eax,%eax 62 jz 2f 63 PIC_PROLOGUE 64 leal 28(%ecx), %eax 65 pushl %eax /* (sigset_t*)oset */ 66 pushl $0 /* (sigset_t*)set */ 67 pushl $1 /* SIG_BLOCK */ 68 call PIC_PLT(CNAME(_sigprocmask)) 69 addl $12,%esp 70 PIC_EPILOGUE 71 movl 4(%esp),%ecx 722: movl 0(%esp),%edx 73 movl %edx, 0(%ecx) 74 movl %ebx, 4(%ecx) 75 movl %esp, 8(%ecx) 76 movl %ebp,12(%ecx) 77 movl %esi,16(%ecx) 78 movl %edi,20(%ecx) 79 fnstcw 24(%ecx) 80 xorl %eax,%eax 81 ret 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 112