Move gdbsupport to the top level

This patch moves the gdbsupport directory to the top level.  This is
the next step in the ongoing project to move gdbserver to the top
level.

The bulk of this patch was created by "git mv gdb/gdbsupport gdbsupport".

This patch then adds a build system to gdbsupport and wires it into
the top level.  Then it changes gdb to use the top-level build.

gdbserver, on the other hand, is not yet changed.  It still does its
own build of gdbsupport.

ChangeLog
2020-01-14  Tom Tromey  <tom@tromey.com>

	* src-release.sh (GDB_SUPPORT_DIRS): Add gdbsupport.
	* MAINTAINERS: Add gdbsupport.
	* configure: Rebuild.
	* configure.ac (configdirs): Add gdbsupport.
	* gdbsupport: New directory, move from gdb/gdbsupport.
	* Makefile.def (host_modules, dependencies): Add gnulib.
	* Makefile.in: Rebuild.

gdb/ChangeLog
2020-01-14  Tom Tromey  <tom@tromey.com>

	* nat/x86-linux-dregs.c: Include configh.h.
	* nat/linux-ptrace.c: Include configh.h.
	* nat/linux-btrace.c: Include configh.h.
	* defs.h: Include config.h, bfd.h.
	* configure.ac: Don't source common.host.
	(CONFIG_OBS, CONFIG_SRCS): Remove gdbsupport files.
	* configure: Rebuild.
	* acinclude.m4: Update path.
	* Makefile.in (SUPPORT, LIBSUPPORT, INCSUPPORT): New variables.
	(CONFIG_SRC_SUBDIR): Remove gdbsupport.
	(INTERNAL_CFLAGS_BASE): Add INCSUPPORT.
	(CLIBS): Add LIBSUPPORT.
	(CDEPS): Likewise.
	(COMMON_SFILES): Remove gdbsupport files.
	(HFILES_NO_SRCDIR): Likewise.
	(stamp-version): Update path to create-version.sh.
	(ALLDEPFILES): Remove gdbsupport files.

gdb/gdbserver/ChangeLog
2020-01-14  Tom Tromey  <tom@tromey.com>

	* server.h: Include config.h.
	* gdbreplay.c: Include config.h.
	* configure: Rebuild.
	* configure.ac: Don't source common.host.
	* acinclude.m4: Update path.
	* Makefile.in (INCSUPPORT): New variable.
	(INCLUDE_CFLAGS): Add INCSUPPORT.
	(SFILES): Update paths.
	(version-generated.c): Update path to create-version.sh.
	(gdbsupport/%-ipa.o, gdbsupport/%.o): Update paths.

gdbsupport/ChangeLog
2020-01-14  Tom Tromey  <tom@tromey.com>

	* common-defs.h: Add GDBSERVER case.  Update includes.
	* acinclude.m4, aclocal.m4, config.in, configure, configure.ac,
	Makefile.am, Makefile.in, README: New files.
	* Moved from ../gdb/gdbsupport/

Change-Id: I07632e7798635c1bab389bf885971e584fb4bb78

1 files changed, 76 insertions, 0 deletions

diff --git a/gdbsupport/netstuff.h b/gdbsupport/netstuff.h
new file mode 100644
index 00000000000..a987d7ff188
--- /dev/null
+++ b/gdbsupport/netstuff.h
@@ -0,0 +1,76 @@
+/* Operations on network stuff.
+   Copyright (C) 2018-2020 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/>.  */
+
+#ifndef COMMON_NETSTUFF_H
+#define COMMON_NETSTUFF_H
+
+#include <string>
+
+/* Like NI_MAXHOST/NI_MAXSERV, but enough for numeric forms.  */
+#define GDB_NI_MAX_ADDR 64
+#define GDB_NI_MAX_PORT 16
+
+/* Helper class to guarantee that we always call 'freeaddrinfo'.  */
+
+class scoped_free_addrinfo
+{
+public:
+  /* Default constructor.  */
+  explicit scoped_free_addrinfo (struct addrinfo *ainfo)
+    : m_res (ainfo)
+  {
+  }
+
+  /* Destructor responsible for free'ing M_RES by calling
+     'freeaddrinfo'.  */
+  ~scoped_free_addrinfo ();
+
+  DISABLE_COPY_AND_ASSIGN (scoped_free_addrinfo);
+
+private:
+  /* The addrinfo resource.  */
+  struct addrinfo *m_res;
+};
+
+/* The struct we return after parsing the connection spec.  */
+
+struct parsed_connection_spec
+{
+  /* The hostname.  */
+  std::string host_str;
+
+  /* The port, if any.  */
+  std::string port_str;
+};
+
+
+/* Parse SPEC (which is a string in the form of "ADDR:PORT") and
+   return a 'parsed_connection_spec' structure with the proper fields
+   filled in.  Also adjust HINT accordingly.  */
+extern parsed_connection_spec
+  parse_connection_spec_without_prefix (std::string spec,
+					struct addrinfo *hint);
+
+/* Parse SPEC (which is a string in the form of
+   "[tcp[6]:|udp[6]:]ADDR:PORT") and return a 'parsed_connection_spec'
+   structure with the proper fields filled in.  Also adjust HINT
+   accordingly.  */
+extern parsed_connection_spec parse_connection_spec (const char *spec,
+						     struct addrinfo *hint);
+
+#endif /* COMMON_NETSTUFF_H */