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Tom Tromey 7fdc15218d remove pop_target
This patch fixes the target double-close problem (PR remote/15266),
and in the process removes pop_target entire (PR remote/15256).

The first issue is that pop_target calls target_close.  However, it
then calls unpush_target, which also calls target_close.  This means
targets must be able to be closed twice.  Not only is this strange,
but it also directly contradicts the contract of to_xclose targets.
(We currently have just a single such target, and it is never pushed;
but I plan to add more, and so this latent bug is triggered.)

The second issue is that it seems to me that calling pop_target is
often unsafe.  This is what cropped up in 15256, where the remote
target assumed that it could pop_target -- but there was another
target higher on the stack, leading to confusion.

But, it is always just as easy to call unpush_target as it is to call
pop_target; and it is also safer.  So, removing pop_target seemed like
an improvement.

Finally, this adds an assertion to target_close to ensure that no
currently-pushed target can be closed.

Built and regtested on x86-64 Fedora 18; both natively and using the
native-gdbserver board file.

	PR remote/15256, PR remote/15266:
	* bfd-target.c (target_bfd_reopen): Initialize to_magic.
	* monitor.c (monitor_detach): Use unpush_target.
	* remote-m32r-sdi.c (m32r_detach): Use unpush_target.
	* remote-mips.c (mips_detach): Use unpush_target.  Don't
	call mips_close.
	* remote-sim.c (gdbsim_detach): Use unpush_target.
	* target.c (pop_target): Remove.
	(pop_all_targets_above): Don't call target_close.
	(target_close): Assert that the target is unpushed.
	* target.h (pop_target): Don't declare.
	* tracepoint.c (tfile_open): Use unpush_target.
2013-07-25 14:34:51 +00:00
bfd PR ld/15762 2013-07-25 00:14:11 +00:00
binutils PR binutils/15745 2013-07-19 10:44:01 +00:00
config 2013-04-30 Jan-Benedict Glaw <jbglaw@lug-owl.de> 2013-04-30 12:40:42 +00:00
cpu PR binutils/15241 2013-03-08 17:25:12 +00:00
elfcpp elfcpp/ 2013-03-01 22:45:56 +00:00
etc PR other/46202: implement install-strip. 2010-11-20 19:37:58 +00:00
gas Support Intel MPX 2013-07-24 15:47:25 +00:00
gdb remove pop_target 2013-07-25 14:34:51 +00:00
gold gold/ 2013-07-19 23:07:08 +00:00
gprof * aarch64.c (aarch64_find_call): Promote to bfd_vma before sign 2013-05-24 00:28:06 +00:00
include Support Intel MPX 2013-07-24 15:47:25 +00:00
intl merge from gcc 2010-09-27 21:01:18 +00:00
ld Check .gnu.warning section in shared library 2013-07-24 17:24:20 +00:00
libdecnumber merge from gcc 2013-07-09 16:04:44 +00:00
libiberty merge from gcc 2013-07-22 18:03:12 +00:00
opcodes Support Intel MPX 2013-07-24 15:47:25 +00:00
readline readline/ 2013-05-22 09:51:49 +00:00
sim move version.in from gdb/common back to gdb 2013-06-28 18:59:51 +00:00
texinfo * texinfo/texinfo.tex: Update to version 2009-03-28.05. 2009-04-21 12:36:46 +00:00
.cvsignore
.gitignore Sync the root .gitignore file with GCC's. 2013-01-11 15:17:35 +00:00
ChangeLog src-release: Fix VER computation for TOOL=gdb 2013-07-22 15:17:20 +00:00
compile Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00
config-ml.in * config-ml.in: Don't handle arc-*-elf*. 2011-03-22 20:01:13 +00:00
config.guess * config.guess: Update from config repo. 2013-04-29 15:13:53 +00:00
config.rpath Remove freebsd1 from libtool.m4 macros and config.rpath. 2011-02-13 21:00:14 +00:00
config.sub * config.guess: Update from config repo. 2013-04-29 15:13:53 +00:00
configure 2013-07-10 Jack Howarth <howarth@bromo.med.uc.edu> 2013-07-10 20:55:59 +00:00
configure.ac 2013-07-10 Jack Howarth <howarth@bromo.med.uc.edu> 2013-07-10 20:55:59 +00:00
COPYING
COPYING.LIB
COPYING.LIBGLOSS 2013-01-07 Jeff Johnston <jjohnstn@redhat.com> 2013-01-07 21:39:26 +00:00
COPYING.NEWLIB 2013-05-06 Sandra Loosemore <sandra@codesourcery.com> 2013-05-06 18:31:56 +00:00
COPYING3
COPYING3.LIB
depcomp Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00
djunpack.bat
install-sh Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00
libtool.m4 PR target/38607 2012-09-14 23:55:22 +00:00
ltgcc.m4
ltmain.sh Backport from Libtool: Fix relink mode to use absolute path if hardcode_minus_L. 2011-01-13 18:52:53 +00:00
ltoptions.m4 Sync Libtool from GCC. 2010-01-09 21:11:44 +00:00
ltsugar.m4
ltversion.m4 Sync Libtool from GCC. 2010-01-09 21:11:44 +00:00
lt~obsolete.m4 Sync Libtool from GCC. 2010-01-09 21:11:44 +00:00
MAINTAINERS MAINTAINERS: clarify policy with config/ (and other top level files) 2012-05-12 03:10:17 +00:00
Makefile.def 2013-04-22 Jan-Benedict Glaw <jbglaw@lug-owl.de> 2013-04-22 17:11:22 +00:00
Makefile.in 2013-04-22 Jan-Benedict Glaw <jbglaw@lug-owl.de> 2013-04-22 17:11:22 +00:00
Makefile.tpl * Makefile.tpl (BOOT_ADAFLAGS): Remove -gnata. 2013-01-11 11:48:54 +00:00
makefile.vms
missing Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00
mkdep
mkinstalldirs Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00
move-if-change Import move-if-change script from gnulib. 2011-02-12 15:47:02 +00:00
README
README-maintainer-mode Cleanups after the update to Autoconf 2.64, Automake 1.11. 2009-08-22 17:08:11 +00:00
setup.com 2009-09-01 Tristan Gingold <gingold@adacore.com> 2009-09-01 13:38:26 +00:00
src-release src-release: Fix VER computation for TOOL=gdb 2013-07-22 15:17:20 +00:00
symlink-tree
ylwrap Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00

		   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

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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
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.