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, 73 insertions, 0 deletions

diff --git a/gdbsupport/fileio.h b/gdbsupport/fileio.h
new file mode 100644
index 00000000000..9d33e467dd5
--- /dev/null
+++ b/gdbsupport/fileio.h
@@ -0,0 +1,73 @@
+/* File-I/O functions for GDB, the GNU debugger.
+
+   Copyright (C) 2003-2020 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_FILEIO_H
+#define COMMON_FILEIO_H
+
+#include "gdb/fileio.h"
+#include <sys/stat.h>
+
+/* Convert a host-format errno value to a File-I/O error number.  */
+
+extern int host_to_fileio_error (int error);
+
+/* Convert File-I/O open flags FFLAGS to host format, storing
+   the result in *FLAGS.  Return 0 on success, -1 on error.  */
+
+extern int fileio_to_host_openflags (int fflags, int *flags);
+
+/* Convert File-I/O mode FMODE to host format, storing
+   the result in *MODE.  Return 0 on success, -1 on error.  */
+
+extern int fileio_to_host_mode (int fmode, mode_t *mode);
+
+/* Pack a host-format integer into a byte buffer in big-endian
+   format.  BYTES specifies the size of the integer to pack in
+   bytes.  */
+
+static inline void
+host_to_bigendian (LONGEST num, char *buf, int bytes)
+{
+  int i;
+
+  for (i = 0; i < bytes; ++i)
+    buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff;
+}
+
+/* Pack a host-format integer into an fio_uint_t.  */
+
+static inline void
+host_to_fileio_uint (long num, fio_uint_t fnum)
+{
+  host_to_bigendian ((LONGEST) num, (char *) fnum, 4);
+}
+
+/* Pack a host-format time_t into an fio_time_t.  */
+
+static inline void
+host_to_fileio_time (time_t num, fio_time_t fnum)
+{
+  host_to_bigendian ((LONGEST) num, (char *) fnum, 4);
+}
+
+/* Pack a host-format struct stat into a struct fio_stat.  */
+
+extern void host_to_fileio_stat (struct stat *st, struct fio_stat *fst);
+
+#endif /* COMMON_FILEIO_H */