H.J. Lu 81e90cf63a readelf: Add --got-contents option
Add --got-contents option to readelf, inspired by the -G option on Solaris,
to display contents of GOT sections:

$ readelf --got-contents libfoo.so

Global Offset Table '.got' contains 1 entry:
 Index:    Address       Reloc         Sym. Name + Addend/Value
     0: 000000200340 R_X86_64_GLOB_DAT foo + 0

Global Offset Table '.got.plt' contains 4 entries:
 Index:    Address       Reloc         Sym. Name + Addend/Value
     0: 000000200348                   200220
     1: 000000200350                   0
     2: 000000200358                   0
     3: 000000200360 R_X86_64_JUMP_SLO bar + 0

When --got-content options are used:

1. Allocate an array, all_relocations, to hold all relocations.
2. Update dump_relr_relocations and dump_relocations to scan relocations
and cache them in all_relocations.  Don't display relocations if not
requested.
3. Add process_got_section_contents to display contents of GOT sections
by matching the GOT entry offset against the cached relocations.
4. Update process_mips_specific to only display the GOT related contents
for --got-contents.

binutils/

	* NEWS: Mention "readelf --got-contents".
	* readelf.c (do_got_section_contents): New.
	(elf_relocation): Likewise.
	(all_relocations_root): Likewise.
	(all_relocations): Likewise.
	(all_relocations_count): Likewise.
	(update_all_relocations): Likewise.
	(dump_relr_relocations): Add a bool argument to indicate if
	relocations should be displayed.  Populate all_relocations if
	do_got_section_contents is true.
	(dump_relocations): Likewise.
	(long_option_values): Add OPTION_GOT_CONTENTS.
	(options): Add --got-contents.
	(usage): Show --got-contents.
	(parse_args): Support --got-contents.
	(display_relocations): Add a bool argument, dump_reloc, to
	indicate if relocations should be displayed.  Call
	update_all_relocations.  Pass dump_reloc to dump_relr_relocations
	and dump_relocations.
	(process_relocs): Check do_got_section_contents.  Handle
	do_got_section_contents for dynamic relocations.
	(process_section_contents): Pass true to display_relocations.
	(process_mips_specific): Add a bool argument, dump_got, to
	indicate if only the GOT related contents should be displayed.
	Display all MIPS specific information if dump_got is false.
	(elf_relocation_cmp): New.
	(display_elf_relocation_at): Likewise.
	(process_got_section_contents): Likewise.
	(process_object): Call process_got_section_contents.
	* doc/binutils.texi: Document --got-contents.

ld/

	* testsuite/ld-i386/binutils.exp: New file.
	* testsuite/ld-i386/got-1.s: Likewise.
	* testsuite/ld-i386/libgot-1a.rd: Likewise.
	* testsuite/ld-i386/libgot-1b.rd: Likewise.
	* testsuite/ld-i386/libgot-1c.rd: Likewise.
	* testsuite/ld-i386/libgot-1d.rd: Likewise.
	* testsuite/ld-x86-64/binutils.exp: Likewise.
	* testsuite/ld-x86-64/got-1.s: Likewise.
	* testsuite/ld-x86-64/libgot-1a-x32.rd: Likewise.
	* testsuite/ld-x86-64/libgot-1a.rd: Likewise.
	* testsuite/ld-x86-64/libgot-1b-x32.rd: Likewise.
	* testsuite/ld-x86-64/libgot-1b.rd: Likewise.
	* testsuite/ld-x86-64/libgot-1c-x32.rd: Likewise.
	* testsuite/ld-x86-64/libgot-1c.rd: Likewise.
	* testsuite/ld-x86-64/libgot-1d-x32.rd: Likewise.
	* testsuite/ld-x86-64/libgot-1d.rd: Likewise.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
2025-08-29 06:17:19 -07:00
2025-08-29 12:12:24 +02:00
2025-07-13 08:35:45 +01:00
2025-07-13 08:35:45 +01:00
2025-07-23 19:49:50 -04:00
2025-08-07 22:14:49 +09:30
2025-07-19 12:54:32 -07:00
2025-08-29 06:17:19 -07:00
2025-08-07 22:14:49 +09:30
2025-08-07 10:33:44 +01:00
2025-07-31 14:45:21 +01:00
2025-02-28 16:06:25 +00:00
2025-08-28 09:01:33 -06:00
2025-07-13 08:35:45 +01:00

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.
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