1/* $NetBSD: compident.S,v 1.1 2013/11/14 12:19:34 martin Exp $ */ 2 3/*- 4 * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Martin Husemann <martin@NetBSD.org>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 33/* 34 * This file is used to generate a note describing the code model in use by 35 * the compiler on some architectures where this has consequences for the 36 * VA layout applied by the kernel. On sparc64 the topdown VA layout can 37 * only be enabled for processes compiled with -mcmodel=medany or greater, 38 * but not for processes without this note or -mcmodel=medlow. 39 * 40 * The note looks similar to the .note.netbsd.march note used (for example) 41 * on arm to note the ABI used by the process. 42 * 43 * [NOTE HEADER] 44 * long name size 45 * long content size 46 * long note type 47 * 48 * [NOTE DATUM] 49 * string code model (for sparc64: medlow, medmid, medany, 50 * the embedany model is never PIC, so not used here) 51 * 52 * The DATUM fields should be padded out such that their actual (not 53 * declared) sizes % 4 == 0. 54 */ 55 56#include "sysident_assym.h" 57 58 .section ".note.netbsd.mcmodel", "a" 59 .p2align 2 60 61 .long ELF_NOTE_MCMODEL_NAMESZ 62 .long CONTENTLENGTH 63 .long ELF_NOTE_TYPE_MCMODEL_TAG 64 .ascii "NetBSD\0\0" 65 .ascii CONTENT 66