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Luis Machado ba60b96371 [aarch64] Add TPIDR2 register support for Linux
With the AArch64 Scalable Matrix Extension we have a new TPIDR2 register, and
it will be added to the existing NT_ARM_TLS register set. Kernel patches are
being reviewed here:

https://lore.kernel.org/linux-arm-kernel/20220818170111.351889-1-broonie@kernel.org/

From GDB's perspective, we handle it in a similar way to the existing TPIDR
register. But we need to consider cases of systems that only have TPIDR and
systems that have both TPIDR and TPIDR2.

With that in mind, the following patch adds the required code to support
TPIDR2 and turns the org.gnu.gdb.aarch64.tls feature into a
dynamically-generated target description as opposed to a static target
description containing only TPIDR.

That means we can remove the gdb/features/aarch64-tls.xml file and replace the
existing gdb/features/aarch64-tls.c auto-generated file with a new file that
dynamically generates the target description containing either TPIDR alone or
TPIDR and TPIDR2.

In the future, when *BSD's start to support this register, they can just
enable it as is being done for the AArch64 Linux target.

The core file read/write code has been updated to support TPIDR2 as well.

On GDBserver's side, there is a small change to the find_regno function to
expose a non-throwing version of it.

It always seemed strange to me how find_regno causes the whole operation to
abort if it doesn't find a particular register name. The patch moves code
from find_regno into find_regno_no_throw and makes find_regno call
find_regno_no_throw instead.

This allows us to do register name lookups to find a particular register
number without risking erroring out if nothing is found.

The patch also adjusts the feature detection code for aarch64-fbsd, since
the infrastructure is shared amongst all aarch64 targets. I haven't added
code to support TPIDR2 in aarch64-fbsd though, as I'm not sure when/if
that will happen.
2022-12-09 13:41:15 +00:00
bfd PR28306, segfault in _bfd_mips_elf_reloc_unshuffle 2022-12-09 21:38:46 +10:30
binutils Compression tidy and fixes 2022-12-07 13:15:29 +10:30
config libsframe: add the SFrame library 2022-11-15 15:24:29 -08:00
contrib Import mklog.py from gcc repo 2020-09-25 10:24:44 -04:00
cpu Add markers for 2.39 branch 2022-07-08 10:41:07 +01:00
elfcpp gold, dwp: support zstd compressed input debug sections [PR 29641] 2022-11-10 21:42:14 -08:00
etc Update year range in copyright notice of binutils files 2022-01-02 12:04:28 +10:30
gas PowerPC: Add support for RFC02655 - Saturating Subtract Instruction 2022-12-07 11:47:16 -06:00
gdb [aarch64] Add TPIDR2 register support for Linux 2022-12-09 13:41:15 +00:00
gdbserver [aarch64] Add TPIDR2 register support for Linux 2022-12-09 13:41:15 +00:00
gdbsupport fix leak in gdb_environ 2022-11-27 21:08:24 +01:00
gnulib [PR build/29791] gnulib: Disable _GL_ATTRIBUTE_DEALLOC on Solaris 2022-11-20 14:55:52 +01:00
gold Re: gold: add --compress-debug-sections=zstd [PR 29641] 2022-11-11 18:05:36 +10:30
gprof Updated Hungarian translation for the gprof sub-directory. 2022-10-21 10:55:57 +01:00
gprofng gprofng: remove unused gprofng/src/DbeSession.cc.1 2022-11-28 20:52:10 -08:00
include Compression tidy and fixes 2022-12-07 13:15:29 +10:30
intl egrep in binutils 2022-09-28 13:37:31 +09:30
ld x86-64: Remove BND from 64-bit IBT PLT 2022-12-08 08:05:45 -08:00
libbacktrace testsuite: support mold linker 2022-12-05 15:52:51 +01:00
libctf libctf: avoid potential double free 2022-12-08 11:46:22 +10:30
libdecnumber Merge config/ changes from GCC, to enable DFP on AArch64 2022-05-24 10:47:29 +01:00
libiberty Impport libiberty commit: 885b6660c17f from gcc mainline. Fix gas's acinclude.m4 to stop a potwntial configure time warning message. 2022-11-24 12:31:46 +00:00
libsframe sframe/doc: remove usage of xrefautomaticsectiontitle 2022-11-24 10:14:08 -08:00
opcodes PowerPC: Add support for RFC02655 - Saturating Subtract Instruction 2022-12-07 11:47:16 -06:00
readline gdb/readline: fix extra 'quit' message problem 2022-05-07 10:49:27 +01:00
sim sim: pru: Fix behaviour when loop count is zero 2022-11-12 15:10:07 +02:00
texinfo
zlib Regenerate with automake-1.15.1 2022-07-09 20:10:47 +09:30
.cvsignore
.editorconfig Add top-level .editorconfig file 2022-01-28 08:25:42 -05:00
.gitattributes binutils-gdb/git: highlight whitespace errors in source files 2022-07-25 14:35:41 +01:00
.gitignore Add gnu global outputs to .gitignore 2020-12-02 10:00:27 -05:00
ar-lib
ChangeLog Add ability to create reproducible source tarballs. 2022-10-10 11:28:45 +01:00
compile
config-ml.in
config.guess Update the config.guess and config.sub files from the master repository and regenerate files. 2022-01-17 16:21:22 +00:00
config.rpath
config.sub Update the config.guess and config.sub files from the master repository and regenerate files. 2022-01-17 16:21:22 +00:00
configure libsframe: add the SFrame library 2022-11-15 15:24:29 -08:00
configure.ac libsframe: add the SFrame library 2022-11-15 15:24:29 -08:00
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
depcomp
djunpack.bat
install-sh
libtool.m4 libtool.m4: fix the NM="/nm/over/here -B/option/with/path" case 2022-03-25 12:02:35 +00:00
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS MAINTAINERS: Update path to readline config.{sub,guess} files 2021-05-24 18:11:49 +02:00
Makefile.def bfd: linker: merge .sframe sections 2022-11-15 15:49:47 -08:00
Makefile.in bfd: linker: merge .sframe sections 2022-11-15 15:49:47 -08:00
Makefile.tpl Pass PKG_CONFIG_PATH down from top-level Makefile 2022-04-08 10:56:41 -04:00
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
multilib.am Merge autoconf / automake update changes from GCC. 2018-10-31 17:10:56 +00:00
README
README-maintainer-mode Note that at least dejagnu version 1.5.3 is required in order to be ale to run the testsuites. 2022-10-04 10:54:19 +01:00
setup.com
src-release.sh src-release.sh: Fix gdb source tarball build failure due to libsframe 2022-11-30 07:32:58 +04:00
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.