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Pedro Alves 06e03fff31 gdbserver: Fix qSupported:xmlRegisters=i386;UnknownFeature+ handling
The target_process_qsupported method is called for each qSupported
feature that the common code does not recognize.  The only current
implementation, for x86 Linux (x86_linux_process_qsupported), assumes
that it either is called with the "xmlRegisters=i386" feature, or that
it is isn't called at all, indicating the connected GDB predates x86
XML descriptions.

That's a bad assumption however.  If GDB sends in a new/unknown (to
core gdbserver) feature after "xmlRegisters=i386", say, something like
qSupported:xmlRegisters=i386;UnknownFeature+, then when
target_process_qsupported is called for "UnknownFeature+",
x86_linux_process_qsupported clears the 'use_xml' global and calls
x86_linux_update_xmltarget, and gdbserver ends up _not_ reporting a
XML description...

This commit changes the target_process_qsupported API to instead pass
down a vector of unprocessed qSupported features in one go.

(There's an early call to target_process_qsupported(NULL) that
indicates "starting qSupported processing".  There's no matching call
to mark the end of processing, though.  I first fixed this by passing
(char *)-1 to indicate that, and adjusted the x86 backend to only
clear 'use_xml' when qSupported processing starts, and then only call
x86_linux_update_xmltarget() when (char *)-1 was passed.  However, I
wasn't that happy with the hack and came up this alternative version.)

gdb/gdbserver/ChangeLog:
2015-11-19  Pedro Alves  <palves@redhat.com>

	* linux-low.c (linux_process_qsupported): Change prototype.
	Adjust.
	* linux-low.h (struct linux_target_ops) <process_qsupported>:
	Change prototype.
	* linux-x86-low.c (x86_linux_process_qsupported): Change prototype
	and adjust to loop over all features.
	* server.c (handle_query) <qSupported>: Adjust to call
	target_process_qsupported once, passing it a vector of unprocessed
	features.
	* target.h (struct target_ops) <process_qsupported>: Change
	prototype.
	(target_process_qsupported): Adjust.
2015-11-19 18:32:55 +00:00
bfd [S/390] Add null ptr check + port GOTOFF handling from 32 bit over to 64 bit 2015-11-19 11:10:06 +01:00
binutils mach-o: decode and display arm64 compact unwind entries. 2015-11-18 16:45:03 +01:00
config Missing parts of fixes for in-tree libiconv 2015-08-24 10:57:03 +01:00
cpu Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
elfcpp Add assembler, disassembler and linker support for power9. 2015-11-11 19:52:52 -06:00
etc PR external/{16327,16328}: Remove etc/configure.texi and etc/standards.texi. 2014-06-27 11:33:25 +02:00
gas [AArch64] Reject invalid immediate operands to MSR PAN 2015-11-19 14:13:45 +00:00
gdb gdbserver: Fix qSupported:xmlRegisters=i386;UnknownFeature+ handling 2015-11-19 18:32:55 +00:00
gold [GOLD] PowerPC TOC16 and GOT16 relocs are relative 2015-11-19 17:01:04 +10:30
gprof Bump version to 2.26.51 2015-11-14 16:24:39 -08:00
include [ARM] Add ARMv8.2 architecture feature and command line option. 2015-11-19 09:24:14 +00:00
intl Regen intl/configure 2015-08-31 12:53:36 +09:30
ld Account for .tbss alignment when adjusting start of relro 2015-11-19 16:22:25 +10:30
libdecnumber Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
libiberty Configury changes for obstack optimization 2015-11-09 15:21:50 +10:30
opcodes [AArch64] Reject invalid immediate operands to MSR PAN 2015-11-19 14:13:45 +00:00
readline Revert "Sync readline/ to version 7.0 alpha" 2015-07-25 15:57:00 -04:00
sim sim: mn10300/v850: drop unused WITH_CORE define 2015-11-17 23:12:59 -05:00
texinfo
zlib Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
.cvsignore
.gitattributes Add a .gitattributes file for use with git-merge-changelog 2014-07-25 18:07:23 -04:00
.gitignore Sync the root .gitignore file with GCC's. 2013-01-11 15:17:35 +00:00
ChangeLog Reset x86 Linux targets to not compressing debug sections by default. Enable compression of debug sections by default in the linker, if so configured. 2015-10-21 13:15:39 +01:00
compile Update from upstream Automake 2014-11-16 13:43:48 +01:00
config-ml.in Sync toplevel files with GCC 2015-07-27 07:49:05 -07:00
config.guess Sync config.sub and config.guess with GCC 2015-08-07 07:51:39 -07:00
config.rpath
config.sub Sync config.sub and config.guess with GCC 2015-08-07 07:51:39 -07:00
configure Reset x86 Linux targets to not compressing debug sections by default. Enable compression of debug sections by default in the linker, if so configured. 2015-10-21 13:15:39 +01:00
configure.ac Reset x86 Linux targets to not compressing debug sections by default. Enable compression of debug sections by default in the linker, if so configured. 2015-10-21 13:15:39 +01:00
COPYING
COPYING.LIB
COPYING.LIBGLOSS 2013-01-07 Jeff Johnston <jjohnstn@redhat.com> 2013-01-07 21:39:26 +00:00
COPYING.NEWLIB 2013-10-01 Jeff Johnston <jjohnstn@redhat.com> 2013-10-01 18:14:04 +00:00
COPYING3
COPYING3.LIB
depcomp Update from upstream Automake 2014-11-16 13:43:48 +01:00
djunpack.bat
install-sh Update from upstream Automake 2014-11-16 13:43:48 +01:00
libtool.m4 Update libtool.m4 from GCC trunk 2014-11-24 09:14:09 -08:00
ltgcc.m4
ltmain.sh PR target/59788 2014-02-06 11:01:57 +01:00
ltoptions.m4
ltsugar.m4
ltversion.m4
lt~obsolete.m4
MAINTAINERS Update description of ownership of files in include/ 2014-11-04 16:14:14 -08:00
Makefile.def Resync files in the binutils repository that are maintained in the gcc repository. 2015-09-30 17:55:16 +01:00
Makefile.in Resync files in the binutils repository that are maintained in the gcc repository. 2015-09-30 17:55:16 +01:00
Makefile.tpl Sync Makefile.tpl with GCC 2015-07-14 09:52:36 -07:00
makefile.vms
missing Update from upstream Automake 2014-11-16 13:43:48 +01:00
mkdep
mkinstalldirs Update from upstream Automake 2014-11-16 13:43:48 +01:00
move-if-change Update `move-if-change' from gnulib 2014-11-16 17:04:02 +01:00
README
README-maintainer-mode
setup.com
src-release.sh Adjust src-release.sh for sim using the gdb create-version.sh. 2015-04-15 04:08:51 +02:00
symlink-tree
ylwrap Update from upstream Automake 2014-11-16 13:43:48 +01:00

		   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.