Tom Tromey 919adfe840 Move gdbserver to top level
This patch moves gdbserver to the top level.

This patch is as close to a pure move as possible -- gdbserver still
builds its own variant of gnulib and gdbsupport.  Changing this will
be done in a separate patch.

[v2] Note that, per Simon's review comment, this patch changes the
tree so that gdbserver is not built for or1k or score.  This makes
sense, because there is apparently not actually a gdbserver port here.

[v3] This version of the patch also splits out some configury into a
new file, gdbserver/configure.host, so that the top-level configure
script can simply rely on it in order to decide whether gdbserver
should be built.

[v4] This version adds documentation and removes some unnecessary
top-level dependencies.

[v5] Update docs to mention "make all-gdbserver" and change how
top-level configure decides whether to build gdbserver, switching to a
single, shared script.

Tested by the buildbot.

ChangeLog
2020-02-07  Tom Tromey  <tom@tromey.com>
	    Pedro Alves  <palves@redhat.com>

	* src-release.sh (GDB_SUPPORT_DIRS): Add gdbserver.
	* gdbserver: New directory, moved from gdb/gdbserver.
	* configure.ac (host_tools): Add gdbserver.
	Only build gdbserver on certain systems.
	* Makefile.in, configure: Rebuild.
	* Makefile.def (host_modules, dependencies): Add gdbserver.
	* MAINTAINERS: Add gdbserver.

gdb/ChangeLog
2020-02-07  Tom Tromey  <tom@tromey.com>

	* README: Update gdbserver documentation.
	* gdbserver: Move to top level.
	* configure.tgt (build_gdbserver): Remove.
	* configure.ac: Remove --enable-gdbserver.
	* configure: Rebuild.
	* Makefile.in (distclean): Don't mention gdbserver.

Change-Id: I826b7565b54604711dc7a11edea0499cd51ff39e
2020-02-07 08:42:25 -07:00

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C

/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "server.h"
#include "dll.h"
#include <algorithm>
/* An "unspecified" CORE_ADDR, for match_dll. */
#define UNSPECIFIED_CORE_ADDR (~(CORE_ADDR) 0)
std::list<dll_info> all_dlls;
int dlls_changed;
/* Record a newly loaded DLL at BASE_ADDR. */
void
loaded_dll (const char *name, CORE_ADDR base_addr)
{
all_dlls.emplace_back (name != NULL ? name : "", base_addr);
dlls_changed = 1;
}
/* Record that the DLL with NAME and BASE_ADDR has been unloaded. */
void
unloaded_dll (const char *name, CORE_ADDR base_addr)
{
auto pred = [&] (const dll_info &dll)
{
if (base_addr != UNSPECIFIED_CORE_ADDR
&& base_addr == dll.base_addr)
return true;
if (name != NULL && dll.name == name)
return true;
return false;
};
auto iter = std::find_if (all_dlls.begin (), all_dlls.end (), pred);
if (iter == all_dlls.end ())
/* For some inferiors we might get unloaded_dll events without having
a corresponding loaded_dll. In that case, the dll cannot be found
in ALL_DLL, and there is nothing further for us to do.
This has been observed when running 32bit executables on Windows64
(i.e. through WOW64, the interface between the 32bits and 64bits
worlds). In that case, the inferior always does some strange
unloading of unnamed dll. */
return;
else
{
/* DLL has been found so remove the entry and free associated
resources. */
all_dlls.erase (iter);
dlls_changed = 1;
}
}
void
clear_dlls (void)
{
all_dlls.clear ();
}