getcontext.S revision 1.3
1 1.3 drochner /* $NetBSD: getcontext.S,v 1.3 2004/03/09 20:21:22 drochner Exp $ */ 2 1.1 fvdl 3 1.1 fvdl /* 4 1.1 fvdl * Copyright (c) 2003 Wasabi Systems, Inc. 5 1.1 fvdl * All rights reserved. 6 1.1 fvdl * 7 1.1 fvdl * Written by Frank van der Linden for Wasabi Systems, Inc. 8 1.1 fvdl * 9 1.1 fvdl * Redistribution and use in source and binary forms, with or without 10 1.1 fvdl * modification, are permitted provided that the following conditions 11 1.1 fvdl * are met: 12 1.1 fvdl * 1. Redistributions of source code must retain the above copyright 13 1.1 fvdl * notice, this list of conditions and the following disclaimer. 14 1.1 fvdl * 2. Redistributions in binary form must reproduce the above copyright 15 1.1 fvdl * notice, this list of conditions and the following disclaimer in the 16 1.1 fvdl * documentation and/or other materials provided with the distribution. 17 1.1 fvdl * 3. All advertising materials mentioning features or use of this software 18 1.1 fvdl * must display the following acknowledgement: 19 1.1 fvdl * This product includes software developed for the NetBSD Project by 20 1.1 fvdl * Wasabi Systems, Inc. 21 1.1 fvdl * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.1 fvdl * or promote products derived from this software without specific prior 23 1.1 fvdl * written permission. 24 1.1 fvdl * 25 1.1 fvdl * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.1 fvdl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.1 fvdl * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.1 fvdl * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.1 fvdl * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.1 fvdl * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.1 fvdl * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.1 fvdl * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.1 fvdl * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.1 fvdl * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.1 fvdl * POSSIBILITY OF SUCH DAMAGE. 36 1.1 fvdl */ 37 1.1 fvdl 38 1.1 fvdl 39 1.1 fvdl #include "SYS.h" 40 1.1 fvdl 41 1.1 fvdl #if defined(SYSLIBC_SCCS) && !defined(lint) 42 1.3 drochner RCSID("$NetBSD: getcontext.S,v 1.3 2004/03/09 20:21:22 drochner Exp $") 43 1.1 fvdl #endif 44 1.1 fvdl 45 1.1 fvdl #ifdef WEAK_ALIAS 46 1.1 fvdl WEAK_ALIAS(getcontext, _getcontext) 47 1.1 fvdl #endif 48 1.1 fvdl 49 1.1 fvdl /* 50 1.1 fvdl * 56 == offsetof(ucontext_t, uc_mcontext) 51 1.1 fvdl * 14 == _REG_RAX 52 1.1 fvdl * 21 == _REG_RIP 53 1.1 fvdl * 24 == _REG_URSP 54 1.1 fvdl */ 55 1.1 fvdl 56 1.3 drochner _SYSCALL(_getcontext,getcontext) 57 1.1 fvdl movq (%rsp),%r11 58 1.1 fvdl movq %r11,(56 + 21 * 8)(%rdi) 59 1.1 fvdl leaq 8(%rsp),%r11 60 1.1 fvdl movq %r11,(56 + 24 * 8)(%rdi) 61 1.1 fvdl movq $0,(56 + 14 * 8)(%rdi) 62 1.1 fvdl xorl %eax,%eax 63 1.1 fvdl ret 64
Indexes created Mon Sep 29 21:09:56 GMT 2025