1 /* $NetBSD: compident.S,v 1.1 2013/11/14 12:19:34 martin Exp $ */
4 * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Martin Husemann <martin@NetBSD.org>.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
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.
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.
49 * string code model (for sparc64: medlow, medmid, medany,
50 * the embedany model is never PIC, so not used here)
52 * The DATUM fields should be padded out such that their actual (not
53 * declared) sizes % 4 == 0.
56 #include "sysident_assym.h"
58 .section ".note.netbsd.mcmodel", "a"
61 .long ELF_NOTE_MCMODEL_NAMESZ
63 .long ELF_NOTE_TYPE_MCMODEL_TAG