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Joel Brobecker 4abd5ed222 [lynxos] gdbserver hangs when killing inferior from GDB
With any program under GDBserver control on LynxOS, killing
the program from the debugger (using the "kill" command) causes
GDBserver to properly kill the inferior but GDBserver then hangs.

This change of behavior occured after the following change was
applied:

    commit f0ea042932e6922c90df3fd0001497d287b97677
    Date:   Mon Nov 30 16:05:27 2015 +0000
    Subject: gdbserver: don't exit until GDB disconnects

One of the changes introduced by the commit above is that
process_serial_event no longer calls exit after handling
the vKill packet. Instead, what happens is that we wait
until captured_main finds that we no longer have any inferior
to debug, at which point it throws_quit. This (normal) exception
is then expected to propagate all the way to the exception handle
in function "main", which calls exit.

However, before the exception gets propagated, the cleanups
are first executed, and one of the cleanups in question is
detach_or_kill_for_exit_cleanup, which was put in place by
captured_main. detach_or_kill_for_exit_cleanup is basically
a wrapper around detach_or_kill_for_exit, which iterates
over all inferiors, and kills them all.

In our case, we have only one inferior, which we have already
killed during the handling for the "vKill" packet. Unfortunately,
we did not properly clean our internal data for that inferior up,
and so detach_or_kill_for_exit thinks that we still have one inferior,
and therefore tries to kill it. This results in lynx_kill being
called, doing the following:

    lynx_ptrace (PTRACE_KILL, ptid, 0, 0, 0);
    lynx_wait (ptid, &status, 0);
    the_target->mourn (process);

The hang is caused by the call to lynx_wait, which waits for
an event from a process which does not exist...

This patch fixes the issue by enhancing lynx_mourn to clean
the threads and process list up.

gdb/gdbserver/ChangeLog:

        * lynx-low.c (lynx_delete_thread_callback): New function.
        (lynx_mourn): Properly delete our process and all of its
        threads.  Remove call to clear_inferiors.
2015-12-22 19:28:10 +04:00
bfd RXv2 support update 2015-12-22 23:26:39 +09:00
binutils Add support for ARM's NOREAD section flag. 2015-12-22 14:12:35 +00:00
config libsanitizer merge from upstream r250806, compiler part. 2015-11-28 16:39:32 +00:00
cpu Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
elfcpp [GOLD] R_PPC64_ENTRY support 2015-12-07 13:17:00 +10:30
etc PR external/{16327,16328}: Remove etc/configure.texi and etc/standards.texi. 2014-06-27 11:33:25 +02:00
gas Fix building pdfs of assembler documentation. 2015-12-21 12:00:04 +00:00
gdb [lynxos] gdbserver hangs when killing inferior from GDB 2015-12-22 19:28:10 +04:00
gold Implement --long-plt flag (ARM only). 2015-12-17 16:52:12 -08:00
gprof Bump version to 2.26.51 2015-11-14 16:24:39 -08:00
include Add support for ARM's NOREAD section flag. 2015-12-22 14:12:35 +00:00
intl Regen intl/configure 2015-08-31 12:53:36 +09:30
ld Add support for ARM's NOREAD section flag. 2015-12-22 14:12:35 +00:00
libdecnumber Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
libiberty PR other/61321 - demangler crash on casts in template parameters 2015-11-28 16:39:31 +00:00
opcodes RXv2 support update 2015-12-22 23:26:39 +09:00
readline Revert "Sync readline/ to version 7.0 alpha" 2015-07-25 15:57:00 -04:00
sim Fix invalid left shift of negative value 2015-12-15 14:09:14 +01:00
texinfo
zlib Import zlib 1.2.8 with local change merged in. 2015-11-25 15:14:47 -08:00
.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 binutils: add support for arm-*-darwin and aarch64-*-darwin. 2015-11-20 14:53:06 +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 binutils: add support for arm-*-darwin and aarch64-*-darwin. 2015-11-20 14:53:06 +01:00
configure.ac binutils: add support for arm-*-darwin and aarch64-*-darwin. 2015-11-20 14:53:06 +01:00
COPYING
COPYING3
COPYING3.LIB
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
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
lt~obsolete.m4
ltgcc.m4
ltmain.sh PR target/59788 2014-02-06 11:01:57 +01:00
ltoptions.m4
ltsugar.m4
ltversion.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, 
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If you are receiving this as part of a GDB release, see the file gdb/README.
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see libg++/README, etc.  That'll give you info about this
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It is now possible to automatically configure and build a variety of
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	./configure 
	make

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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
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If you have more than one compiler on your system, it is often best to
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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

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REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
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