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Srinath Parvathaneni 8d59fa447f aarch64: Add support for GCS to AArch64 linker
This patch adds support for Guarded Control Stack in AArch64 linker.

This patch implements the following:
1) Defines GNU_PROPERTY_AARCH64_FEATURE_1_GCS bit for GCS in
GNU_PROPERTY_AARCH64_FEATURE_1_AND macro.

2) Adds readelf support to read and print the GNU properties
in AArch64.

Displaying notes found in: .note.gnu.property
[      ]+Owner[        ]+Data size[    ]+Description
  GNU                  0x00000010      NT_GNU_PROPERTY_TYPE_0
      Properties: AArch64 feature: GCS

3) Adds support for the "-z gcs" linker option and document all the values
allowed with this option (-z gcs[=always|never|implicit]) where "-z gcs" is
equivalent to "-z gcs=always" and when this option is not passed in the
command line, it defaults to "implicit".

4) Adds support for the "-z gcs-report" linker option and document all the
values allowed with this option (-z gcs-report[=none|warning|error]) where
"-z gcs-report" is equivalent to "-z gcs-report=none" and when this option
is not passed in the command line, it defaults to "none".

The ABI changes adding GNU_PROPERTY_AARCH64_FEATURE_1_GCS to the
GNU property GNU_PROPERTY_AARCH64_FEATURE_1_AND is merged into main and
can be found in [1].

[1] https://github.com/ARM-software/abi-aa/blob/main/sysvabi64/sysvabi64.rst

Co-authored-by: Matthieu Longo <matthieu.longo@arm.com>
Co-authored-by: Yury Khrustalev <yury.khrustalev@arm.com>
2024-10-16 15:47:13 +01:00
bfd aarch64: Add support for GCS to AArch64 linker 2024-10-16 15:47:13 +01:00
binutils aarch64: Add support for GCS to AArch64 linker 2024-10-16 15:47:13 +01:00
config
contrib
cpu
elfcpp
etc
gas x86: bring 64-bit-only cmdline option handling in sync 2024-10-11 08:20:33 +02:00
gdb gdb/gdbserver: change shared set_tdesc_osabi to take gdb_osabi 2024-10-10 17:36:21 +01:00
gdbserver Revert "gdbserver: pass osabi to GDB in target description" 2024-10-11 09:31:51 +01:00
gdbsupport gdb/gdbserver: change shared set_tdesc_osabi to take gdb_osabi 2024-10-10 17:36:21 +01:00
gnulib
gold
gprof Updated Brazilian Portuguese translation for the gprof directory. 2024-09-26 16:11:59 +01:00
gprofng gprofng: Use $(DESTDIR) in install-examples 2024-10-11 06:03:38 +08:00
include aarch64: Add support for GCS to AArch64 linker 2024-10-16 15:47:13 +01:00
ld aarch64: Add support for GCS to AArch64 linker 2024-10-16 15:47:13 +01:00
libbacktrace
libctf binutils testsuite: canonicalize subtest names in libctf 2024-09-24 21:50:41 -04:00
libdecnumber
libiberty
libsframe
opcodes Support Intel AVX10.2 media instructions 2024-10-11 10:38:27 +08:00
readline
sim
texinfo
zlib
.cvsignore
.editorconfig
.gitattributes
.gitignore
.pre-commit-config.yaml
ar-lib
ChangeLog
compile
config-ml.in
config.guess
config.rpath
config.sub
configure
configure.ac
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
depcomp
djunpack.bat
install-sh
libtool.m4
lt~obsolete.m4
ltgcc.m4
ltmain.sh ltmain.sh: allow more flags at link-time 2024-09-25 19:06:10 +01:00
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS
Makefile.def
Makefile.in
Makefile.tpl
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
multilib.am
README
README-maintainer-mode
SECURITY.txt
setup.com
src-release.sh
symlink-tree
test-driver
ylwrap

		   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.