setjmp.S revision 1.9
1 1.9 christos /* $NetBSD: setjmp.S,v 1.9 1997/07/16 14:37:19 christos Exp $ */ 2 1.9 christos 3 1.1 cgd /*- 4 1.1 cgd * Copyright (c) 1990 The Regents of the University of California. 5 1.1 cgd * All rights reserved. 6 1.1 cgd * 7 1.1 cgd * This code is derived from software contributed to Berkeley by 8 1.1 cgd * William Jolitz. 9 1.1 cgd * 10 1.1 cgd * Redistribution and use in source and binary forms, with or without 11 1.1 cgd * modification, are permitted provided that the following conditions 12 1.1 cgd * are met: 13 1.1 cgd * 1. Redistributions of source code must retain the above copyright 14 1.1 cgd * notice, this list of conditions and the following disclaimer. 15 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 cgd * notice, this list of conditions and the following disclaimer in the 17 1.1 cgd * documentation and/or other materials provided with the distribution. 18 1.1 cgd * 3. All advertising materials mentioning features or use of this software 19 1.1 cgd * must display the following acknowledgement: 20 1.1 cgd * This product includes software developed by the University of 21 1.1 cgd * California, Berkeley and its contributors. 22 1.1 cgd * 4. Neither the name of the University nor the names of its contributors 23 1.1 cgd * may be used to endorse or promote products derived from this software 24 1.1 cgd * without specific prior written permission. 25 1.1 cgd * 26 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 1.1 cgd * SUCH DAMAGE. 37 1.3 jtc * 38 1.3 jtc * from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90 39 1.1 cgd */ 40 1.1 cgd 41 1.7 jtc #include <machine/asm.h> 42 1.3 jtc #if defined(LIBC_SCCS) 43 1.9 christos RCSID("$NetBSD: setjmp.S,v 1.9 1997/07/16 14:37:19 christos Exp $") 44 1.3 jtc #endif 45 1.1 cgd 46 1.1 cgd /* 47 1.1 cgd * C library -- _setjmp, _longjmp 48 1.1 cgd * 49 1.1 cgd * longjmp(a,v) 50 1.1 cgd * will generate a "return(v)" from the last call to 51 1.1 cgd * setjmp(a) 52 1.1 cgd * by restoring registers from the stack. 53 1.1 cgd * The previous signal state is restored. 54 1.1 cgd */ 55 1.1 cgd 56 1.1 cgd ENTRY(setjmp) 57 1.1 cgd pushl $0 58 1.5 mycroft #ifdef PIC 59 1.1 cgd call PIC_PLT(_sigblock) 60 1.5 mycroft #else 61 1.5 mycroft call _sigblock 62 1.5 mycroft #endif 63 1.6 jtc addl $4,%esp 64 1.4 jtc movl 4(%esp),%ecx 65 1.1 cgd movl 0(%esp),%edx 66 1.1 cgd movl %edx, 0(%ecx) 67 1.1 cgd movl %ebx, 4(%ecx) 68 1.1 cgd movl %esp, 8(%ecx) 69 1.1 cgd movl %ebp,12(%ecx) 70 1.1 cgd movl %esi,16(%ecx) 71 1.1 cgd movl %edi,20(%ecx) 72 1.1 cgd movl %eax,24(%ecx) 73 1.2 jtc xorl %eax,%eax 74 1.1 cgd ret 75 1.1 cgd 76 1.1 cgd ENTRY(longjmp) 77 1.1 cgd movl 4(%esp),%edx 78 1.1 cgd pushl 24(%edx) 79 1.5 mycroft #ifdef PIC 80 1.1 cgd call PIC_PLT(_sigsetmask) 81 1.5 mycroft #else 82 1.5 mycroft call _sigsetmask 83 1.5 mycroft #endif 84 1.6 jtc addl $4,%esp 85 1.1 cgd movl 4(%esp),%edx 86 1.1 cgd movl 8(%esp),%eax 87 1.1 cgd movl 0(%edx),%ecx 88 1.1 cgd movl 4(%edx),%ebx 89 1.1 cgd movl 8(%edx),%esp 90 1.1 cgd movl 12(%edx),%ebp 91 1.1 cgd movl 16(%edx),%esi 92 1.1 cgd movl 20(%edx),%edi 93 1.2 jtc testl %eax,%eax 94 1.2 jtc jnz 1f 95 1.2 jtc incl %eax 96 1.1 cgd 1: movl %ecx,0(%esp) 97 1.1 cgd ret 98
Indexes created Fri Sep 26 08:10:20 GMT 2025