xref: /illumos-gate/usr/src/cmd/sgs/rtld/common/mapfile-order-gcc (revision a48fdbef3a00fbebe91cb7211c789eff0e39c957)
1#
2# CDDL HEADER START
3#
4# The contents of this file are subject to the terms of the
5# Common Development and Distribution License (the "License").
6# You may not use this file except in compliance with the License.
7#
8# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9# or http://www.opensolaris.org/os/licensing.
10# See the License for the specific language governing permissions
11# and limitations under the License.
12#
13# When distributing Covered Code, include this CDDL HEADER in each
14# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15# If applicable, add the following below this CDDL HEADER, with the
16# fields enclosed by brackets "[]" replaced with your own identifying
17# information: Portions Copyright [yyyy] [name of copyright owner]
18#
19# CDDL HEADER END
20#
21
22#
23# Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
24#
25# Note: This mapfile is used to place r_debug as the
26# very first data item inside of the run-time linker.
27# This is required for the ld.so.1 <--> rtld_db bootstraping
28# for debuggers.
29#
30# The issue with this is that different compilers may not agree on the name of
31# the section this data will be placed in.  So we must have a mapfile for
32# each, though at present GCC is the only compiler.
33#
34
35$mapfile_version 2
36
37LOAD_SEGMENT data {
38	FLAGS = READ WRITE EXECUTE;
39
40	# .data.rel sections from pics/debugdata.o go to data segment
41	ASSIGN_SECTION dbg_data {
42		IS_NAME = .data.rel;
43		FILE_PATH = pics/debugdata.o;
44	};
45
46	# Put .data.rel sections from pics/debugdata.o ahead of any other
47	# .data.rel input sections in the .data.rel output section.
48	IS_ORDER = dbg_data;
49
50	# Put .data.rel output section at top of data segment
51	OS_ORDER = .data.rel;
52};
53