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Tamar Christina f7dd2fb2e2 Arm: Backport hlt to all architectures.
The software trap instruction HLT that was introduced in Armv8-a is used
as the semihosting trap instruction in AArch64.  In order to allow systems
configured to run AArch64 code to also run AArch32 with semihosting it was
decided that AArch32 should also use HLT in the case of the "mixed mode"
environment.  This requires that HLT also be backported to all earlier
architectures.  The instruction is in the undefined encoding space earlier
architectures but must trigger a semihosting trap [3].

The Arm Architectural Reference Manual [1] doesn't explicitly mention this
however this is an explicit requirement in the Semihosting-v2 protocol [2].

[1] https://developer.arm.com/docs/ddi0487/latest/arm-architecture-reference-manual-armv8-for-armv8-a-architecture-profile
[2] https://developer.arm.com/docs/100863/latest/the-semihosting-interface
[3] 19a6e31c9d

gas/ChangeLog:

	* config/tc-arm.c (insns): Redefine THUMB_VARIANT and ARM_VARIANT for
	hlt to armv1.
	* testsuite/gas/arm/armv8a-automatic-hlt.d: Update TAGs
	* testsuite/gas/arm/hlt.d: New test.
	* testsuite/gas/arm/hlt.s: New test.

opcodes/ChangeLog:

	* arm-dis.c (arm_opcodes): Redefine hlt to armv1.
2019-02-07 17:20:41 +00:00
bfd SPARC: fix PR ld/18841 2019-02-07 17:04:31 +01:00
binutils Move potentially obsolete BFD targets into the definitely obsolete section. Add a note to the README-how-to-make-a-release document about doing this. 2019-02-07 14:30:02 +00:00
config Add markers for 2.32 branch to NEWS and ChangeLog files. 2019-01-19 15:55:50 +00:00
contrib Update dg-extract-results.* from gcc 2018-08-06 16:05:16 +02:00
cpu Add markers for 2.32 branch to NEWS and ChangeLog files. 2019-01-19 15:55:50 +00:00
elfcpp Add markers for 2.32 branch to NEWS and ChangeLog files. 2019-01-19 15:55:50 +00:00
etc Update year range in copyright notice of binutils files 2019-01-01 22:06:53 +10:30
gas Arm: Backport hlt to all architectures. 2019-02-07 17:20:41 +00:00
gdb gdbserver: When attaching, add process before lwps 2019-02-07 14:37:45 +00:00
gold Updated translations for various binutils subdirectories. 2019-01-21 12:59:20 +00:00
gprof Updated translations for various binutils subdirectories. 2019-01-21 12:59:20 +00:00
include S/390: Implement instruction set extensions 2019-01-31 17:32:18 +01:00
intl Change version to 2.32.51 and regenerate configure and pot files. 2019-01-19 16:51:42 +00:00
ld Fix typo in description of --start-group/--end-group options. 2019-02-07 14:54:58 +00:00
libdecnumber Merge config/ changes from GCC. 2018-10-31 17:16:41 +00:00
libiberty Fix leak in splay-tree 2019-01-21 09:05:01 -07:00
opcodes Arm: Backport hlt to all architectures. 2019-02-07 17:20:41 +00:00
readline Readline: Cleanup some warnings 2019-01-31 17:25:06 +00:00
sim Fix the sim build 2019-01-26 08:53:31 -07:00
texinfo
zlib Merge config/ changes from GCC. 2018-10-31 17:16:41 +00:00
.cvsignore
.gitattributes
.gitignore
ar-lib Bump to autoconf 2.69 and automake 1.15.1 2018-06-19 16:55:06 -04:00
ChangeLog Add markers for 2.32 branch to NEWS and ChangeLog files. 2019-01-19 15:55:50 +00:00
compile
config-ml.in Update top level configure files by synchronizing them with gcc. 2018-01-10 15:29:21 +00:00
config.guess Sync config.guess, config.sub from GCC 2019-01-14 15:47:35 +01:00
config.rpath
config.sub Sync config.guess, config.sub from GCC 2019-01-14 15:47:35 +01:00
configure Don't build readline/libreadline.a, when --with-system-readline is supplied 2019-01-03 00:03:34 -05:00
configure.ac Don't build readline/libreadline.a, when --with-system-readline is supplied 2019-01-03 00:03:34 -05:00
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS Update the address of the FSF in the copyright notice of files which were using the old address. 2017-12-14 12:48:55 +00:00
COPYING.NEWLIB
depcomp
djunpack.bat
install-sh
libtool.m4 Bump to autoconf 2.69 and automake 1.15.1 2018-06-19 16:55:06 -04:00
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS
Makefile.def This was already applied on the GCC side. 2018-06-19 00:05:40 +02:00
Makefile.in Introduce @unless/@endunless and postbootstrap Makefile targets 2018-06-29 23:49:28 -03:00
Makefile.tpl Introduce @unless/@endunless and postbootstrap Makefile targets 2018-06-29 23:49:28 -03:00
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 Bump to autoconf 2.69 and automake 1.15.1 2018-06-19 16:55:06 -04:00
setup.com
src-release.sh Move potentially obsolete BFD targets into the definitely obsolete section. Add a note to the README-how-to-make-a-release document about doing this. 2019-02-07 14:30:02 +00:00
symlink-tree
test-driver Bump to autoconf 2.69 and automake 1.15.1 2018-06-19 16:55:06 -04:00
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.