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, 135 insertions, 0 deletions

diff --git a/gdbsupport/gdb_wait.h b/gdbsupport/gdb_wait.h
new file mode 100644
index 00000000000..3563b9cb954
--- /dev/null
+++ b/gdbsupport/gdb_wait.h
@@ -0,0 +1,135 @@
+/* Standard wait macros.
+   Copyright (C) 2000-2020 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_GDB_WAIT_H
+#define COMMON_GDB_WAIT_H
+
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h> /* POSIX */
+#else
+#ifdef HAVE_WAIT_H
+#include <wait.h> /* legacy */
+#endif
+#endif
+
+/* Define how to access the int that the wait system call stores.
+   This has been compatible in all Unix systems since time immemorial,
+   but various well-meaning people have defined various different
+   words for the same old bits in the same old int (sometimes claimed
+   to be a struct).  We just know it's an int and we use these macros
+   to access the bits.  */
+
+/* The following macros are defined equivalently to their definitions
+   in POSIX.1.  We fail to define WNOHANG and WUNTRACED, which POSIX.1
+   <sys/wait.h> defines, since our code does not use waitpid() (but
+   NOTE exception for GNU/Linux below).  We also fail to declare
+   wait() and waitpid().
+
+   For MinGW, we use the fact that when a Windows program is
+   terminated by a fatal exception, its exit code is the value of that
+   exception, as defined by the various EXCEPTION_* symbols in the
+   Windows API headers.  See also gdb_wait.c.  */
+
+#ifndef	WIFEXITED
+# ifdef __MINGW32__
+#  define WIFEXITED(w)	(((w) & 0xC0000000) == 0)
+# else
+#  define WIFEXITED(w)	(((w)&0377) == 0)
+# endif
+#endif
+
+#ifndef	WIFSIGNALED
+# ifdef __MINGW32__
+#  define WIFSIGNALED(w)	(((w) & 0xC0000000) == 0xC0000000)
+# else
+#  define WIFSIGNALED(w)	(((w)&0377) != 0177 && ((w)&~0377) == 0)
+# endif
+#endif
+
+#ifndef	WIFSTOPPED
+#ifdef IBM6000
+
+/* Unfortunately, the above comment (about being compatible in all Unix
+   systems) is not quite correct for AIX, sigh.  And AIX 3.2 can generate
+   status words like 0x57c (sigtrap received after load), and gdb would
+   choke on it.  */
+
+#define WIFSTOPPED(w)	((w)&0x40)
+
+#else
+#define WIFSTOPPED(w)	(((w)&0377) == 0177)
+#endif
+#endif
+
+#ifndef	WEXITSTATUS
+# ifdef __MINGW32__
+#  define WEXITSTATUS(w)	((w) & ~0xC0000000)
+# else
+#  define WEXITSTATUS(w)	(((w) >> 8) & 0377) /* same as WRETCODE */
+# endif
+#endif
+
+#ifndef	WTERMSIG
+# ifdef __MINGW32__
+extern int windows_status_to_termsig (unsigned long);
+#  define WTERMSIG(w)	windows_status_to_termsig (w)
+# else
+#  define WTERMSIG(w)	((w) & 0177)
+# endif
+#endif
+
+#ifndef	WSTOPSIG
+#define WSTOPSIG	WEXITSTATUS
+#endif
+
+/* These are not defined in POSIX, but are used by our programs.  */
+
+#ifndef	WSETEXIT
+# ifdef	W_EXITCODE
+#define	WSETEXIT(w,status) ((w) = W_EXITCODE(status,0))
+# else
+#define WSETEXIT(w,status) ((w) = (0 | ((status) << 8)))
+# endif
+#endif
+
+#ifndef W_STOPCODE
+#define W_STOPCODE(sig) ((sig) << 8 | 0x7f)
+#endif
+
+#ifndef	WSETSTOP
+#define	WSETSTOP(w,sig)    ((w) = W_STOPCODE(sig))
+#endif
+
+/* For native GNU/Linux we may use waitpid and the __WCLONE option.
+  <GRIPE> It is of course dangerous not to use the REAL header file...
+  </GRIPE>.  */
+
+/* Bits in the third argument to `waitpid'.  */
+#ifndef WNOHANG
+#define	WNOHANG		1	/* Don't block waiting.  */
+#endif
+
+#ifndef WUNTRACED
+#define	WUNTRACED	2	/* Report status of stopped children.  */
+#endif
+
+#ifndef __WCLONE
+#define __WCLONE	0x80000000 /* Wait for cloned process.  */
+#endif
+
+#endif /* COMMON_GDB_WAIT_H */