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, 88 insertions, 0 deletions

diff --git a/gdbsupport/x86-xstate.h b/gdbsupport/x86-xstate.h
new file mode 100644
index 00000000000..0331d8fb428
--- /dev/null
+++ b/gdbsupport/x86-xstate.h
@@ -0,0 +1,88 @@
+/* Common code for x86 XSAVE extended state.
+
+   Copyright (C) 2010-2020 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_X86_XSTATE_H
+#define COMMON_X86_XSTATE_H
+
+/* The extended state feature bits.  */
+#define X86_XSTATE_X87		(1ULL << 0)
+#define X86_XSTATE_SSE		(1ULL << 1)
+#define X86_XSTATE_AVX		(1ULL << 2)
+#define X86_XSTATE_BNDREGS	(1ULL << 3)
+#define X86_XSTATE_BNDCFG	(1ULL << 4)
+#define X86_XSTATE_MPX		(X86_XSTATE_BNDREGS | X86_XSTATE_BNDCFG)
+
+/* AVX 512 adds three feature bits.  All three must be enabled.  */
+#define X86_XSTATE_K		(1ULL << 5)
+#define X86_XSTATE_ZMM_H	(1ULL << 6)
+#define X86_XSTATE_ZMM		(1ULL << 7)
+#define X86_XSTATE_AVX512	(X86_XSTATE_K | X86_XSTATE_ZMM_H \
+				 | X86_XSTATE_ZMM)
+
+#define X86_XSTATE_PKRU		(1ULL << 9)
+
+/* Supported mask and size of the extended state.  */
+#define X86_XSTATE_X87_MASK	X86_XSTATE_X87
+#define X86_XSTATE_SSE_MASK	(X86_XSTATE_X87 | X86_XSTATE_SSE)
+#define X86_XSTATE_AVX_MASK	(X86_XSTATE_SSE_MASK | X86_XSTATE_AVX)
+#define X86_XSTATE_MPX_MASK	(X86_XSTATE_SSE_MASK | X86_XSTATE_MPX)
+#define X86_XSTATE_AVX_MPX_MASK	(X86_XSTATE_AVX_MASK | X86_XSTATE_MPX)
+#define X86_XSTATE_AVX_AVX512_MASK	(X86_XSTATE_AVX_MASK | X86_XSTATE_AVX512)
+#define X86_XSTATE_AVX_MPX_AVX512_PKU_MASK 	(X86_XSTATE_AVX_MPX_MASK\
+					| X86_XSTATE_AVX512 | X86_XSTATE_PKRU)
+
+#define X86_XSTATE_ALL_MASK		(X86_XSTATE_AVX_MPX_AVX512_PKU_MASK)
+
+
+#define X86_XSTATE_SSE_SIZE	576
+#define X86_XSTATE_AVX_SIZE	832
+#define X86_XSTATE_BNDREGS_SIZE	1024
+#define X86_XSTATE_BNDCFG_SIZE	1088
+#define X86_XSTATE_AVX512_SIZE	2688
+#define X86_XSTATE_PKRU_SIZE	2696
+#define X86_XSTATE_MAX_SIZE	2696
+
+
+/* In case one of the MPX XCR0 bits is set we consider we have MPX.  */
+#define HAS_MPX(XCR0) (((XCR0) & X86_XSTATE_MPX) != 0)
+#define HAS_AVX(XCR0) (((XCR0) & X86_XSTATE_AVX) != 0)
+#define HAS_AVX512(XCR0) (((XCR0) & X86_XSTATE_AVX512) != 0)
+#define HAS_PKRU(XCR0) (((XCR0) & X86_XSTATE_PKRU) != 0)
+
+/* Get I386 XSAVE extended state size.  */
+#define X86_XSTATE_SIZE(XCR0) \
+    (HAS_PKRU (XCR0) ? X86_XSTATE_PKRU_SIZE : \
+     (HAS_AVX512 (XCR0) ? X86_XSTATE_AVX512_SIZE : \
+      (HAS_MPX (XCR0) ? X86_XSTATE_BNDCFG_SIZE : \
+       (HAS_AVX (XCR0) ? X86_XSTATE_AVX_SIZE : X86_XSTATE_SSE_SIZE))))
+
+/* Initial value for fctrl register, as defined in the X86 manual, and
+   confirmed in the (Linux) kernel source.  When the x87 floating point
+   feature is not enabled in an inferior we use this as the value of the
+   fcrtl register.  */
+
+#define I387_FCTRL_INIT_VAL 0x037f
+
+/* Initial value for mxcsr register.  When the avx and sse floating point
+   features are not enabled in an inferior we use this as the value of the
+   mxcsr register.  */
+
+#define I387_MXCSR_INIT_VAL 0x1f80
+
+#endif /* COMMON_X86_XSTATE_H */