components/gdb/README
author Mike Sullivan <Mike.Sullivan@Oracle.COM>
Wed, 29 Aug 2012 11:05:56 -0700
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Close of build 04.
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
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# Common Development and Distribution License (the "License").
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# You may not use this file except in compliance with the License.
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#
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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# or http://www.opensolaris.org/os/licensing.
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# See the License for the specific language governing permissions
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# and limitations under the License.
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#
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# When distributing Covered Code, include this CDDL HEADER in each
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# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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# If applicable, add the following below this CDDL HEADER, with the
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# fields enclosed by brackets "[]" replaced with your own identifying
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# information: Portions Copyright [yyyy] [name of copyright owner]
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#
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# CDDL HEADER END
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#
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# Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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#
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NAME:             gdb
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VERSION:          6.8
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DESCRIPTION:      GDB: The GNU Project Debugger
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LICENSE:          GPLv3
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BUGTRAQ:          solaris/utility/gnu_compiler
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COMMENTS:         
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This file contains information about the emacs package within the Userland
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consolidation. Along with the comments in the Makefile, it documents any
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deviations from standard Userland or emacs practice, as well as miscellaneous
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information needed to understand how this component is put together.
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We made the following changes to the gdb sources:
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gdb/auxv.c (gdb.auxv.c.patch);
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    This patch accounts for differences between the aux vector on
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    solaris versus Linux and big endian (Sparc) versus little
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    endian (AMD/Intel):
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    - Solaris pads out the auxv for 32 bit process to 64 bits when
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      being read by a 64 bit process.  Use the native pointer size in
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      gdb itself to determine the auxv field size.
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    - On 64 bit Solaris SPARC, i.e. big endian, the type will be in the
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      left 4 bytes for 32 bit processes and the right 4 bytes for 64
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      bit processes.  The padding is 0.
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gdb/fork-child.c (gdb.fork-child.c.patch):
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    Solaris could require 2 or 3 exec's to start the debugged process
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    depending on whether the user's SHELL is isaexec'ed or not.  Modify
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    startup_inferior to loop until it finds the correct process rather
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    than assuming a fixed count.
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gdb/solib-svr4.c (gdb.solib-svr4.patch):
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    Enhance gdb's dectection of the runtime linker to include amd64 and
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    sparcv9 when debugging 64 bit processes.