/*

 * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2014, 2015, Red Hat Inc. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef CPU_AARCH64_VM_C1_MACROASSEMBLER_AARCH64_HPP

#define CPU_AARCH64_VM_C1_MACROASSEMBLER_AARCH64_HPP

using MacroAssembler::build_frame;

using MacroAssembler::null_check;

// C1_MacroAssembler contains high-level macros for C1

 private:

  int _rsp_offset;    // track rsp changes

  // initialization

  void pd_init() { _rsp_offset = 0; }

void zero_memory(Register addr, Register len, Register t1);

 public:

  void try_allocate(

    Register obj,                      // result: pointer to object after successful allocation

    Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise

    int      con_size_in_bytes,        // object size in bytes if   known at compile time

    Register t1,                       // temp register

    Register t2,                       // temp register

    Label&   slow_case                 // continuation point if fast allocation fails

  );

  void initialize_header(Register obj, Register klass, Register len, Register t1, Register t2);

  void initialize_body(Register obj, Register len_in_bytes, int hdr_size_in_bytes, Register t1);

  void float_cmp(bool is_float, int unordered_result,

                 FloatRegister f0, FloatRegister f1,

                 Register result);

  // locking

  // hdr     : must be r0, contents destroyed

  // obj     : must point to the object to lock, contents preserved

  // disp_hdr: must point to the displaced header location, contents preserved

  // scratch : scratch register, contents destroyed

  // returns code offset at which to add null check debug information

  int lock_object  (Register swap, Register obj, Register disp_hdr, Register scratch, Label& slow_case);

  // unlocking

  // hdr     : contents destroyed

  // obj     : must point to the object to lock, contents preserved

  // disp_hdr: must be r0 & must point to the displaced header location, contents destroyed

  void unlock_object(Register swap, Register obj, Register lock, Label& slow_case);

  void initialize_object(

    Register obj,                      // result: pointer to object after successful allocation

    Register klass,                    // object klass

    Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise

    int      con_size_in_bytes,        // object size in bytes if   known at compile time

    Register t1,                       // temp register

    Register t2                        // temp register

  );

  // allocation of fixed-size objects

  // (can also be used to allocate fixed-size arrays, by setting

  // hdr_size correctly and storing the array length afterwards)

  // obj        : will contain pointer to allocated object

  // t1, t2     : scratch registers - contents destroyed

  // header_size: size of object header in words

  // object_size: total size of object in words

  // slow_case  : exit to slow case implementation if fast allocation fails

  void allocate_object(Register obj, Register t1, Register t2, int header_size, int object_size, Register klass, Label& slow_case);

  enum {

    max_array_allocation_length = 0x00FFFFFF

  };

  // allocation of arrays

  // obj        : will contain pointer to allocated object

  // len        : array length in number of elements

  // t          : scratch register - contents destroyed

  // header_size: size of object header in words

  // f          : element scale factor

  // slow_case  : exit to slow case implementation if fast allocation fails

  void allocate_array(Register obj, Register len, Register t, Register t2, int header_size, int f, Register klass, Label& slow_case);

  int  rsp_offset() const { return _rsp_offset; }

  void set_rsp_offset(int n) { _rsp_offset = n; }

  void invalidate_registers(bool inv_r0, bool inv_r19, bool inv_r2, bool inv_r3, bool inv_r4, bool inv_r5) PRODUCT_RETURN;

  // This platform only uses signal-based null checks. The Label is not needed.

  void null_check(Register r, Label *Lnull = NULL) { MacroAssembler::null_check(r); }

#endif // CPU_AARCH64_VM_C1_MACROASSEMBLER_AARCH64_HPP