/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2018, 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.

 *

 */

#include "precompiled.hpp"

#include "asm/macroAssembler.inline.hpp"

#include "gc/shared/modRefBarrierSetAssembler.hpp"

#define __ masm->

void ModRefBarrierSetAssembler::arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,

                                                   Register src, Register dst, Register count, Register preserve1, Register preserve2) {

  if (type == T_OBJECT) {

    gen_write_ref_array_pre_barrier(masm, decorators, src, dst, count, preserve1, preserve2);

    bool checkcast = (decorators & ARRAYCOPY_CHECKCAST) != 0;

    if (!checkcast) {

      assert_different_registers(dst, count, R9_ARG7, R10_ARG8);

      // Save some arguments for epilogue, e.g. disjoint_long_copy_core destroys them.

      __ mr(R9_ARG7, dst);

      __ mr(R10_ARG8, count);

    }

  }

}

void ModRefBarrierSetAssembler::arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,

                                                   Register dst, Register count, Register preserve) {

  if (type == T_OBJECT) {

    bool checkcast = (decorators & ARRAYCOPY_CHECKCAST) != 0;

    if (!checkcast) {

      gen_write_ref_array_post_barrier(masm, decorators, R9_ARG7, R10_ARG8, preserve);

    } else {

      gen_write_ref_array_post_barrier(masm, decorators, dst, count, preserve);

    }

  }

}