xref: /titanic_41/usr/src/common/mapfiles/common/map.bssalign (revision 24da5b34f49324ed742a340010ed5bd3d4e06625)
1*24da5b34Srie#
2*24da5b34Srie# ident	"%Z%%M%	%I%	%E% SMI"
3*24da5b34Srie#
4*24da5b34Srie# Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
5*24da5b34Srie# Use is subject to license terms.
6*24da5b34Srie#
7*24da5b34Srie# CDDL HEADER START
8*24da5b34Srie#
9*24da5b34Srie# The contents of this file are subject to the terms of the
10*24da5b34Srie# Common Development and Distribution License, Version 1.0 only
11*24da5b34Srie# (the "License").  You may not use this file except in compliance
12*24da5b34Srie# with the License.
13*24da5b34Srie#
14*24da5b34Srie# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
15*24da5b34Srie# or http://www.opensolaris.org/os/licensing.
16*24da5b34Srie# See the License for the specific language governing permissions
17*24da5b34Srie# and limitations under the License.
18*24da5b34Srie#
19*24da5b34Srie# When distributing Covered Code, include this CDDL HEADER in each
20*24da5b34Srie# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
21*24da5b34Srie# If applicable, add the following below this CDDL HEADER, with the
22*24da5b34Srie# fields enclosed by brackets "[]" replaced with your own identifying
23*24da5b34Srie# information: Portions Copyright [yyyy] [name of copyright owner]
24*24da5b34Srie#
25*24da5b34Srie# CDDL HEADER END
26*24da5b34Srie#
27*24da5b34Srie# Linker mapfile that enables the creation of a 'bss' segment, and aligns
28*24da5b34Srie# the segment at 4Mb.  This effectively provides an appropriate alignment for
29*24da5b34Srie# large page mapping of the heap, and thus can be useful when building dynamic
30*24da5b34Srie# executables.  See ppgsz(1).  Users are cautioned that an alignment
31*24da5b34Srie# specification may be machine-specific, and may lose its benefit on different
32*24da5b34Srie# hardware platforms.  A more flexible means of requesting the most optimal
33*24da5b34Srie# underlying page size may evolve in future releases.
34*24da5b34Srie#
35*24da5b34Srie# The linker does not use this file automatically, so one must use the -M
36*24da5b34Srie# option to cc or ld:
37*24da5b34Srie#
38*24da5b34Srie#       cc -M /usr/lib/ld/map.bssalign myprogram.c
39*24da5b34Srie#
40*24da5b34Sriebss = A0x400000;
41