Binutils with MCST patches
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Pedro Alves 20ba1ce66d Linux: don't resume new LWPs until we've pulled all events out of the kernel
Since the starvation avoidance series
(https://sourceware.org/ml/gdb-patches/2014-12/msg00631.html), both
GDB and GDBserver pull all events out of ptrace before deciding which
event to process.

There's one problem with that though.  Because we resume new threads
immediately when we see a PTRACE_EVENT_CLONE event, if the program
constantly spawns threads fast enough, new threads can spawn threads
faster we can pull events out of the kernel, and thus we'd get stuck
in an infinite loop, never returning any event to the core to process.
I occasionally see this happen with the
attach-many-short-lived-threads.exp test against gdbserver.

The fix is to delay resuming new threads until we've pulled out all
events out of the kernel.

On native, we already have the resume_stopped_resumed_lwps function
that knows to resume LWPs that are stopped with no event to report to
the core.  So the patch just adds another use.  GDBserver didn't have
the equivalent yet, so the patch adds one.

Tested on x86_64 Fedora 20, native and gdbserver (remote and
extended-remote).

gdb/gdbserver/ChangeLog:
2015-02-04  Pedro Alves  <palves@redhat.com>

	* linux-low.c (handle_extended_wait): Don't resume LWPs here.
	(resume_stopped_resumed_lwps): New function.
	(linux_wait_for_event_filtered): Use it.

gdb/ChangeLog:
2015-02-04  Pedro Alves  <palves@redhat.com>

	* linux-nat.c (handle_extended_wait): Don't resume LWPs here.
	(wait_lwp): Don't call wait_lwp if linux_handle_extended_wait
	returns true.
	(resume_stopped_resumed_lwps): Don't check whether the thread is
	marked as executing.
	(linux_nat_wait_1): Use resume_stopped_resumed_lwps.
2015-02-04 19:13:28 +01:00
bfd Automatic date update in version.in 2015-02-04 00:00:08 +00:00
binutils More fixes for memory access violations triggered by running readelf on fuzzed binaries. 2015-02-04 10:48:46 +00:00
config
cpu
elfcpp This patch adds IFUNC support for arm gold backend. 2015-01-29 10:15:42 -08:00
etc
gas Fix encoding of "addw ax, [hl]" and "subw ax, [hl]". 2015-02-04 12:00:58 +00:00
gdb Linux: don't resume new LWPs until we've pulled all events out of the kernel 2015-02-04 19:13:28 +01:00
gold Resolve forwarding symbols in plugins. 2015-02-04 09:48:22 -08:00
gprof
include Add support for inlining scripts into .debug_gdb_scripts. 2015-01-31 12:01:13 -08:00
intl
ld Pass -flto-partition=none to the PR ld/12365 test 2015-02-04 04:34:11 -08:00
libdecnumber Another part of fixing "make TAGS". 2015-01-22 21:07:31 +02:00
libiberty strerror.c: Do not declare sys_nerr or sys_errlist if already macros 2015-01-19 16:29:07 +01:00
opcodes NDS32: Set branch instruction to relaxable. 2015-01-29 16:29:42 +08:00
readline
sim sim: Be sure of calling freeargv() after successfully call buildargv(). 2015-02-03 04:03:41 +08:00
texinfo
.cvsignore
.gitattributes
.gitignore
ChangeLog FT32 initial support 2015-01-28 16:25:18 +10:30
compile
config-ml.in
config.guess
config.rpath
config.sub
configure FT32 initial support 2015-01-28 16:25:18 +10:30
configure.ac FT32 initial support 2015-01-28 16:25:18 +10:30
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
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depcomp
djunpack.bat
install-sh
libtool.m4
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS
Makefile.def [GCC bug #63539]: libgo does not use the newly built objcopy when doing a combined build 2015-01-03 14:54:45 -08:00
Makefile.in [GCC bug #63539]: libgo does not use the newly built objcopy when doing a combined build 2015-01-03 14:54:45 -08:00
Makefile.tpl [GCC bug #63539]: libgo does not use the newly built objcopy when doing a combined build 2015-01-03 14:54:45 -08:00
makefile.vms
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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.