Add FreeBSD/aarch64 architecture.

Support for collecting and supplying general purpose and floating point
register sets is provided along with signal frame unwinding.

gdb/ChangeLog:

	* Makefile.in (ALL_64_TARGET_OBS): Add aarch64-fbsd-tdep.o.
	(ALLDEPFILES): Add aarch64-fbsd-tdep.c.
	* NEWS: Mention new FreeBSD/aarch64 target.
	* configure.tgt: Add aarch64*-*-freebsd*.
	* aarch64-fbsd-tdep.c: New file.
	* aarch64-fbsd-tdep.h: New file.

1 files changed, 33 insertions, 0 deletions

diff --git a/gdb/aarch64-fbsd-tdep.h b/gdb/aarch64-fbsd-tdep.h
new file mode 100644
index 0000000..0f66dd3
--- /dev/null
+++ b/gdb/aarch64-fbsd-tdep.h
@@ -0,0 +1,33 @@
+/* FreeBSD/aarch64 target support, prototypes.
+
+   Copyright (C) 2017 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/>.  */
+
+#include "regset.h"
+
+/* The general-purpose regset consists of 30 X registers, plus LR, SP,
+   ELR, and SPSR registers.  SPSR is 32 bits but the structure is
+   passed to 64 bit alignment.  */
+#define AARCH64_FBSD_SIZEOF_GREGSET  (34 * X_REGISTER_SIZE)
+
+/* The fp regset consists of 32 V registers, plus FPSR and FPCR which
+   are 4 bytes wide each, and the whole structure is padded to 128 bit
+   alignment.  */
+#define AARCH64_FBSD_SIZEOF_FPREGSET (33 * V_REGISTER_SIZE)
+
+extern const struct regset aarch64_fbsd_gregset;
+extern const struct regset aarch64_fbsd_fpregset;