setjmp.S revision 1.2
1 1.1 cgd /*- 2 1.1 cgd * Copyright (c) 1990 The Regents of the University of California. 3 1.1 cgd * All rights reserved. 4 1.1 cgd * 5 1.1 cgd * This code is derived from software contributed to Berkeley by 6 1.1 cgd * William Jolitz. 7 1.1 cgd * 8 1.1 cgd * Redistribution and use in source and binary forms, with or without 9 1.1 cgd * modification, are permitted provided that the following conditions 10 1.1 cgd * are met: 11 1.1 cgd * 1. Redistributions of source code must retain the above copyright 12 1.1 cgd * notice, this list of conditions and the following disclaimer. 13 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 14 1.1 cgd * notice, this list of conditions and the following disclaimer in the 15 1.1 cgd * documentation and/or other materials provided with the distribution. 16 1.1 cgd * 3. All advertising materials mentioning features or use of this software 17 1.1 cgd * must display the following acknowledgement: 18 1.1 cgd * This product includes software developed by the University of 19 1.1 cgd * California, Berkeley and its contributors. 20 1.1 cgd * 4. Neither the name of the University nor the names of its contributors 21 1.1 cgd * may be used to endorse or promote products derived from this software 22 1.1 cgd * without specific prior written permission. 23 1.1 cgd * 24 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 1.1 cgd * SUCH DAMAGE. 35 1.1 cgd */ 36 1.1 cgd 37 1.1 cgd #if defined(LIBC_SCCS) && !defined(lint) 38 1.1 cgd .text 39 1.1 cgd /*.asciz "from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90"*/ 40 1.2 jtc .asciz "$Id: setjmp.S,v 1.2 1993/10/20 18:50:17 jtc Exp $" 41 1.1 cgd #endif /* LIBC_SCCS and not lint */ 42 1.1 cgd 43 1.1 cgd /* 44 1.1 cgd * C library -- _setjmp, _longjmp 45 1.1 cgd * 46 1.1 cgd * longjmp(a,v) 47 1.1 cgd * will generate a "return(v)" from the last call to 48 1.1 cgd * setjmp(a) 49 1.1 cgd * by restoring registers from the stack. 50 1.1 cgd * The previous signal state is restored. 51 1.1 cgd */ 52 1.1 cgd 53 1.1 cgd #include "DEFS.h" 54 1.1 cgd #include "SYS.h" 55 1.1 cgd 56 1.1 cgd ENTRY(setjmp) 57 1.1 cgd pushl $0 58 1.1 cgd call PIC_PLT(_sigblock) 59 1.1 cgd popl %edx 60 1.1 cgd movl 4(%esp),%ecx 61 1.1 cgd movl 0(%esp),%edx 62 1.1 cgd movl %edx, 0(%ecx) 63 1.1 cgd movl %ebx, 4(%ecx) 64 1.1 cgd movl %esp, 8(%ecx) 65 1.1 cgd movl %ebp,12(%ecx) 66 1.1 cgd movl %esi,16(%ecx) 67 1.1 cgd movl %edi,20(%ecx) 68 1.1 cgd movl %eax,24(%ecx) 69 1.2 jtc xorl %eax,%eax 70 1.1 cgd ret 71 1.1 cgd 72 1.1 cgd ENTRY(longjmp) 73 1.1 cgd movl 4(%esp),%edx 74 1.1 cgd pushl 24(%edx) 75 1.1 cgd call PIC_PLT(_sigsetmask) 76 1.1 cgd popl %eax 77 1.1 cgd movl 4(%esp),%edx 78 1.1 cgd movl 8(%esp),%eax 79 1.1 cgd movl 0(%edx),%ecx 80 1.1 cgd movl 4(%edx),%ebx 81 1.1 cgd movl 8(%edx),%esp 82 1.1 cgd movl 12(%edx),%ebp 83 1.1 cgd movl 16(%edx),%esi 84 1.1 cgd movl 20(%edx),%edi 85 1.2 jtc testl %eax,%eax 86 1.2 jtc jnz 1f 87 1.2 jtc incl %eax 88 1.1 cgd 1: movl %ecx,0(%esp) 89 1.1 cgd ret 90
Indexes created Fri Sep 26 08:10:20 GMT 2025