Add an AArch64 simulator to GDB.

sim	* configure.tgt: Add aarch64 entry.
	* configure: Regenerate.
	* sim/aarch64/configure.ac: New configure template.
	* sim/aarch64/aclocal.m4: Generate.
	* sim/aarch64/config.in: Generate.
	* sim/aarch64/configure: Generate.
	* sim/aarch64/cpustate.c: New file - functions for accessing
	AArch64 registers.
	* sim/aarch64/cpustate.h: New header.
	* sim/aarch64/decode.h: New header.
	* sim/aarch64/interp.c: New file - interface between GDB and
	simulator.
	* sim/aarch64/Makefile.in: New makefile template.
	* sim/aarch64/memory.c: New file - functions for simulating
	aarch64 memory accesses.
	* sim/aarch64/memory.h: New header.
	* sim/aarch64/sim-main.h: New header.
	* sim/aarch64/simulator.c: New file - aarch64 simulator
	functions.
	* sim/aarch64/simulator.h: New header.

include/gdb * sim-aarch64.h: New file.

sim/test * configure: Regenerate.
	* sim/aarch64: New directory.

1 files changed, 57 insertions, 0 deletions

diff --git a/sim/aarch64/simulator.h b/sim/aarch64/simulator.h
new file mode 100644
index 0000000..1f22448
--- /dev/null
+++ b/sim/aarch64/simulator.h
@@ -0,0 +1,57 @@
+/* simulator.h -- Prototypes for AArch64 simulator functions.
+
+   Copyright (C) 2015 Free Software Foundation, Inc.
+
+   Contributed by Red Hat.
+
+   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 _SIMULATOR_H
+#define _SIMULATOR_H
+
+#include "config.h"
+#include <sys/types.h>
+#include <setjmp.h>
+
+#include "sim-main.h"
+#include "decode.h"
+
+extern bfd_boolean disas;
+
+#define TOP_LEVEL_RETURN_PC 0xffffffffffffffecULL
+
+/* Call this to set the start stack pointer, frame pointer and pc
+   before calling run or step.  Also sets link register to a special
+   value (-20) so we can detect a top level return.  This function
+   should be called from the sim setup routine running on the alt
+   stack, and should pass in the current top of C stack for SP and
+   the FP of the caller for fp.  PC should be sthe start of the
+   AARCH64 code segment to be executed.  */
+
+extern void         aarch64_init (sim_cpu *, uint64_t);
+
+/* Call this to run from the current PC without stopping until we
+   either return from the top frame, execute a halt or break or we
+   hit an error.  */
+
+extern void         aarch64_run (SIM_DESC);
+
+extern const char * aarch64_get_func (uint64_t);
+extern void         aarch64_print_insn (SIM_DESC, uint64_t);
+extern uint64_t     aarch64_get_sym_value (const char *);
+extern void         aarch64_init_LIT_table (void);
+
+#endif /* _SIMULATOR_H */