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Jan Beulich 48bcea9f48 x86: consolidate Disp<NN> handling a little
In memory operand addressing, which forms of displacement are permitted
besides Disp8 is pretty clearly limited
- outside of 64-bit mode, Disp16 or Disp32 only, depending on address
  size (MPX being special in not allowing Disp16),
- in 64-bit mode, Disp32s or Disp64 without address size override, and
  solely Disp32 with one.
Adjust assembler and i386-gen to match this, observing that templates
already get adjusted before trying to match them against input depending
on the presence of an address size prefix.

This adjustment logic gets extended to all cases, as certain DispNN
values should also be dropped when there's no such prefix. In fact
behavior of the assembler, perhaps besides the exact diagnostics wording,
should not differ between there being templates applicable to 64-bit and
non-64-bit at the same time, or there being fully separate sets of
templates, with their DispNN settings already reduced accordingly.

This adjustment logic further gets guarded such that there wouldn't be
and Disp<N> conversion based on address size prefix when this prefix
doesn't control the width of the displacement (on branches other than
absolute ones).

These adjustments then also allow folding two MOV templates, which had
been split between 64-bit and non-64-bits variants so far.

Once in this area also
- drop the bogus DispNN from JumpByte templates, leaving just the
  correct Disp8 there (compensated by i386_finalize_displacement()
  now setting Disp8 on their operands),
- add the missing Disp32S to XBEGIN.

Note that the changes make it necessary to temporarily mark a test as
XFAIL; this will get taken care of by a subsequent patch. The failing
parts are entirely bogus and will get replaced.
2019-12-27 09:22:03 +01:00
bfd Automatic date update in version.in 2019-12-27 00:00:29 +00:00
binutils Fix build 32-bit-host build error last for last binutils/dwarf2.c change. 2019-12-23 13:19:59 +01:00
config
contrib
cpu ubsan: iq2000: left shift of negative value 2019-12-23 18:04:12 +10:30
elfcpp
etc
gas x86: consolidate Disp<NN> handling a little 2019-12-27 09:22:03 +01:00
gdb Make symbol_set_names a member function 2019-12-27 01:41:35 -03:00
gnulib Update Gnulib to the latest git version 2019-12-16 12:20:50 -06:00
gold Introduce new .text.sorted.* sections. 2019-11-26 17:20:10 +01:00
gprof
include Remove tic80 support 2019-12-17 16:36:54 +10:30
intl
ld Avoid ubsan bug complaining about &p->field 2019-12-26 17:49:03 +10:30
libctf
libdecnumber
libiberty
opcodes x86: consolidate Disp<NN> handling a little 2019-12-27 09:22:03 +01:00
readline Fix compilation of Readline on mingw.org's MinGW 2019-12-23 16:28:32 +02:00
sim Add install-strip to sim/ 2019-12-19 11:28:53 -07:00
texinfo
zlib
.cvsignore
.gitattributes
.gitignore Add profiling outputs to .gitignore 2019-12-26 06:54:58 +01:00
ar-lib
ChangeLog Add profiling outputs to .gitignore 2019-12-26 06:54:58 +01:00
compile
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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.