setjmp.S revision 1.7
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 1.3 jtc * 36 1.3 jtc * from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90 37 1.7 jtc * $Id: setjmp.S,v 1.7 1995/12/28 20:03:59 jtc Exp $ 38 1.1 cgd */ 39 1.1 cgd 40 1.7 jtc #include <machine/asm.h> 41 1.7 jtc 42 1.3 jtc #if defined(LIBC_SCCS) 43 1.1 cgd .text 44 1.7 jtc .asciz "$Id: setjmp.S,v 1.7 1995/12/28 20:03:59 jtc Exp $" 45 1.3 jtc #endif 46 1.1 cgd 47 1.1 cgd /* 48 1.1 cgd * C library -- _setjmp, _longjmp 49 1.1 cgd * 50 1.1 cgd * longjmp(a,v) 51 1.1 cgd * will generate a "return(v)" from the last call to 52 1.1 cgd * setjmp(a) 53 1.1 cgd * by restoring registers from the stack. 54 1.1 cgd * The previous signal state is restored. 55 1.1 cgd */ 56 1.1 cgd 57 1.1 cgd #include "SYS.h" 58 1.1 cgd 59 1.1 cgd ENTRY(setjmp) 60 1.1 cgd pushl $0 61 1.5 mycroft #ifdef PIC 62 1.1 cgd call PIC_PLT(_sigblock) 63 1.5 mycroft #else 64 1.5 mycroft call _sigblock 65 1.5 mycroft #endif 66 1.6 jtc addl $4,%esp 67 1.4 jtc movl 4(%esp),%ecx 68 1.1 cgd movl 0(%esp),%edx 69 1.1 cgd movl %edx, 0(%ecx) 70 1.1 cgd movl %ebx, 4(%ecx) 71 1.1 cgd movl %esp, 8(%ecx) 72 1.1 cgd movl %ebp,12(%ecx) 73 1.1 cgd movl %esi,16(%ecx) 74 1.1 cgd movl %edi,20(%ecx) 75 1.1 cgd movl %eax,24(%ecx) 76 1.2 jtc xorl %eax,%eax 77 1.1 cgd ret 78 1.1 cgd 79 1.1 cgd ENTRY(longjmp) 80 1.1 cgd movl 4(%esp),%edx 81 1.1 cgd pushl 24(%edx) 82 1.5 mycroft #ifdef PIC 83 1.1 cgd call PIC_PLT(_sigsetmask) 84 1.5 mycroft #else 85 1.5 mycroft call _sigsetmask 86 1.5 mycroft #endif 87 1.6 jtc addl $4,%esp 88 1.1 cgd movl 4(%esp),%edx 89 1.1 cgd movl 8(%esp),%eax 90 1.1 cgd movl 0(%edx),%ecx 91 1.1 cgd movl 4(%edx),%ebx 92 1.1 cgd movl 8(%edx),%esp 93 1.1 cgd movl 12(%edx),%ebp 94 1.1 cgd movl 16(%edx),%esi 95 1.1 cgd movl 20(%edx),%edi 96 1.2 jtc testl %eax,%eax 97 1.2 jtc jnz 1f 98 1.2 jtc incl %eax 99 1.1 cgd 1: movl %ecx,0(%esp) 100 1.1 cgd ret 101
Indexes created Fri Sep 26 20:09:58 GMT 2025