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, 75 insertions, 0 deletions

diff --git a/gdbsupport/run-time-clock.h b/gdbsupport/run-time-clock.h
new file mode 100644
index 0000000..fef0c34
--- /dev/null
+++ b/gdbsupport/run-time-clock.h
@@ -0,0 +1,75 @@
+/* User/system CPU time clocks that follow the std::chrono interface.
+   Copyright (C) 2016-2020 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_RUN_TIME_CLOCK_H
+#define COMMON_RUN_TIME_CLOCK_H
+
+#include <chrono>
+
+/* Count the total amount of time spent executing in user mode.  */
+
+struct user_cpu_time_clock
+{
+  using duration = std::chrono::microseconds;
+  using rep = duration::rep;
+  using period = duration::period;
+  using time_point = std::chrono::time_point<user_cpu_time_clock>;
+
+  static constexpr bool is_steady = true;
+
+  /* Use run_time_clock::now instead.  */
+  static time_point now () noexcept = delete;
+};
+
+/* Count the total amount of time spent executing in kernel mode.  */
+
+struct system_cpu_time_clock
+{
+  using duration = std::chrono::microseconds;
+  using rep = duration::rep;
+  using period = duration::period;
+  using time_point = std::chrono::time_point<system_cpu_time_clock>;
+
+  static constexpr bool is_steady = true;
+
+  /* Use run_time_clock::now instead.  */
+  static time_point now () noexcept = delete;
+};
+
+/* Count the total amount of time spent executing in userspace+kernel
+   mode.  */
+
+struct run_time_clock
+{
+  using duration = std::chrono::microseconds;
+  using rep = duration::rep;
+  using period = duration::period;
+  using time_point = std::chrono::time_point<run_time_clock>;
+
+  static constexpr bool is_steady = true;
+
+  static time_point now () noexcept;
+
+  /* Return the user/system time as separate time points, if
+     supported.  If not supported, then the combined user+kernel time
+     is returned in USER and SYSTEM is set to zero.  */
+  static void now (user_cpu_time_clock::time_point &user,
+		   system_cpu_time_clock::time_point &system) noexcept;
+};
+
+#endif /* COMMON_RUN_TIME_CLOCK_H */