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Luis Machado cf44c9fa1b AArch64: Report tag violation error information
Whenever a memory tag violation occurs, we get a SIGSEGV. Additional
information can be obtained through the siginfo data structure.

For AArch64 the Linux kernel may expose the fault address and tag
information, if we have a synchronous event. Otherwise there is
no fault address available.

The synchronous event looks like this:

--
(gdb) continue
Continuing.

Program received signal SIGSEGV, Segmentation fault
Memory tag violation while accessing address 0x0500fffff7ff8000
Allocation tag 0x1.
Logical tag 0x5
--

The asynchronous event looks like this:

--
(gdb) continue
Continuing.

Program received signal SIGSEGV, Segmentation fault
Memory tag violation
Fault address unavailable.
--

gdb/ChangeLog:

2021-03-24  Luis Machado  <luis.machado@linaro.org>

	* aarch64-linux-tdep.c
	(aarch64_linux_report_signal_info): New function.
	(aarch64_linux_init_abi): Register
	aarch64_linux_report_signal_info as the report_signal_info hook.
	* arch/aarch64-linux.h (SEGV_MTEAERR): Define.
	(SEGV_MTESERR): Define.
2021-03-24 14:56:07 -03:00
bfd Automatic date update in version.in 2021-03-24 00:00:06 +00:00
binutils Add startswith function and use it instead of CONST_STRNEQ. 2021-03-22 11:01:43 +01:00
config GCC_CET_HOST_FLAGS: Check if host supports multi-byte NOPs 2021-03-18 08:02:46 -07:00
contrib Import mklog.py from gcc repo 2020-09-25 10:24:44 -04:00
cpu Add Changelog entries and NEWS entries for 2.36 branch 2021-01-09 10:40:28 +00:00
elfcpp Add DWARF 5 support in gold. 2021-03-19 13:55:35 -07:00
etc Update year range in copyright notice of binutils files 2021-01-01 10:31:05 +10:30
gas x86: derive opcode length from opcode value 2021-03-24 08:33:33 +01:00
gdb AArch64: Report tag violation error information 2021-03-24 14:56:07 -03:00
gdbserver AArch64: Add MTE register set support for GDB and gdbserver 2021-03-24 14:52:57 -03:00
gdbsupport Provide an inline startswith function in bfd.h 2021-03-21 23:00:32 +10:30
gnulib gnulib: update to 776af40e0 2021-02-05 13:35:20 -05:00
gold Use stdout when printing object file names for -t option. 2021-03-19 18:41:12 -07:00
gprof Regen Makefile.in for jobserver.m4 aclocal.m4 dependency 2021-01-13 22:06:02 +10:30
include AArch64: Add MTE register set support for GDB and gdbserver 2021-03-24 14:52:57 -03:00
intl intl: turn LIBINTL into -L / -l form 2021-02-10 15:26:57 +00:00
ld Add startswith function and use it instead of CONST_STRNEQ. 2021-03-22 11:01:43 +01:00
libctf Provide an inline startswith function in bfd.h 2021-03-21 23:00:32 +10:30
libdecnumber Run autoreconf -vf throughout 2020-07-29 16:03:55 -04:00
libiberty GCC_CET_HOST_FLAGS: Check if host supports multi-byte NOPs 2021-03-18 08:02:46 -07:00
opcodes x86: derive opcode length from opcode value 2021-03-24 08:33:33 +01:00
readline Fix Readline 8.1 build on mingw 2021-03-02 13:42:37 -07:00
sim sim: rename BUILD_LDFLAGS to LDFLAGS_FOR_BUILD 2021-03-13 11:21:13 -05:00
texinfo
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ChangeLog Add install dependencies for ld -> bfd and libctf -> bfd 2021-03-18 12:40:40 +00:00
compile
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config.rpath
config.sub config.sub update broke powerpc-eabivle 2021-01-07 08:56:28 +10:30
configure Remove arm-symbianelf 2021-02-09 23:36:16 +10:30
configure.ac Remove arm-symbianelf 2021-02-09 23:36:16 +10:30
COPYING
COPYING3
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COPYING.LIB
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COPYING.NEWLIB
depcomp
djunpack.bat
install-sh
libtool.m4 GCC: Check if AR works with --plugin and rc 2021-01-11 16:26:51 -08:00
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS Move gdbserver to top level 2020-02-07 08:42:25 -07:00
Makefile.def Add install dependencies for ld -> bfd and libctf -> bfd 2021-03-18 12:40:40 +00:00
Makefile.in Add install dependencies for ld -> bfd and libctf -> bfd 2021-03-18 12:40:40 +00:00
Makefile.tpl Add missing changes to Makefile.tpl 2021-02-28 04:39:38 -08:00
makefile.vms
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multilib.am Merge autoconf / automake update changes from GCC. 2018-10-31 17:10:56 +00:00
README
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		   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.