--- /dev/null 2018-09-25 19:24:56.000000000 +0300 +++ new/src/hotspot/cpu/aarch32/gc/shared/modRefBarrierSetAssembler_aarch32.hpp 2018-09-25 19:24:55.000000000 +0300 @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2015-2018, Azul Systems, 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_GC_SHARED_MODREFBARRIERSETASSEMBLER_AARCH64_HPP +#define CPU_AARCH64_GC_SHARED_MODREFBARRIERSETASSEMBLER_AARCH64_HPP + +#include "asm/macroAssembler.hpp" +#include "gc/shared/barrierSetAssembler.hpp" + +// The ModRefBarrierSetAssembler filters away accesses on BasicTypes other +// than T_OBJECT/T_ARRAY (oops). The oop accesses call one of the protected +// accesses, which are overridden in the concrete BarrierSetAssembler. + +class ModRefBarrierSetAssembler: public BarrierSetAssembler { +protected: + // Generate code for an array write pre barrier + // + // addr - starting address + // count - element count + // + // Destroy no registers! + // + virtual void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators, + Register addr, Register count) {} + + // Generate code for an array write post barrier + // + // Input: + // start - register containing starting address of destination array + // end - register containing ending address of destination array + // scratch - scratch register + // + // The input registers are overwritten. + // The ending address is inclusive. + virtual void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators, + Register start, Register end, Register scratch) {} + + virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, + Address dst, Register val, Register tmp1, Register tmp2) = 0; + +public: + virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop, + Register addr, Register count); + virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop, + Register start, Register end, Register scratch); + virtual void store_word_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, + Address dst, Register val, Register tmp1, Register tmp2); +}; + +#endif // CPU_AARCH64_GC_SHARED_MODREFBARRIERSETASSEMBLER_AARCH64_HPP