/*

 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2016 SAP SE. 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_S390_VM_C1_MACROASSEMBLER_S390_HPP

#define CPU_S390_VM_C1_MACROASSEMBLER_S390_HPP

  void pd_init() { /* nothing to do */ }

 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

    Label&   slow_case                 // Continuation point if fast allocation fails.

  );

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

  void initialize_body(Register objectFields, Register len_in_bytes, Register Rzero);

  // locking

  // hdr     : Used to hold locked markOop to be CASed into obj, contents destroyed.

  // obj     : Must point to the object to lock, contents preserved.

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

  // Returns code offset at which to add null check debug information.

  void lock_object(Register hdr, Register obj, Register disp_hdr, Label& slow_case);

  // unlocking

  // hdr     : Used to hold original markOop to be CASed back into obj, contents destroyed.

  // obj     : Must point to the object to lock, contents preserved.

  // disp_hdr: Must point to the displaced header location, contents destroyed.

  void unlock_object(Register hdr, 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.

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

  // hdr_size correctly and storing the array length afterwards.

  void allocate_object(

    Register obj,                      // result: Pointer to object after successful allocation.

    Register t1,                       // temp register

    Register t2,                       // temp register

    int      hdr_size,                 // object header size in words

    int      obj_size,                 // object size in words

    Register klass,                    // object klass

    Label&   slow_case                 // Continuation point if fast allocation fails.

  );

  enum {

    max_array_allocation_length = 0x01000000 // Sparc friendly value, requires sethi only.

  };

  // Allocation of arrays.

  void allocate_array(

    Register obj,                      // result: Pointer to array after successful allocation.

    Register len,                      // array length

    Register t1,                       // temp register

    Register t2,                       // temp register

    int      hdr_size,                 // object header size in words

    int      elt_size,                 // element size in bytes

    Register klass,                    // object klass

    Label&   slow_case                 // Continuation point if fast allocation fails.

  );

  // Invalidates registers in this window.

  void invalidate_registers(Register preserve1 = noreg, Register preserve2 = noreg,

                            Register preserve3 = noreg) PRODUCT_RETURN;

  void nop() { z_nop(); }

  // 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_S390_VM_C1_MACROASSEMBLER_S390_HPP