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82 lines
3.7 KiB
C++
82 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2020, 2021, Huawei Technologies Co., Ltd. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef CPU_RISCV_GC_SHARED_BARRIERSETASSEMBLER_RISCV_HPP
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#define CPU_RISCV_GC_SHARED_BARRIERSETASSEMBLER_RISCV_HPP
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#include "asm/macroAssembler.hpp"
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#include "gc/shared/barrierSet.hpp"
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#include "gc/shared/barrierSetNMethod.hpp"
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#include "memory/allocation.hpp"
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#include "oops/access.hpp"
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enum class NMethodPatchingType {
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stw_instruction_and_data_patch,
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conc_instruction_and_data_patch,
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conc_data_patch
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};
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class BarrierSetAssembler: public CHeapObj<mtGC> {
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private:
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void incr_allocated_bytes(MacroAssembler* masm,
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Register var_size_in_bytes, int con_size_in_bytes,
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Register t1 = noreg);
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public:
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virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
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Register src, Register dst, Register count, RegSet saved_regs) {}
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virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
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Register start, Register end, Register tmp, RegSet saved_regs) {}
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virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
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Register dst, Address src, Register tmp1, Register tmp_thread);
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virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
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Address dst, Register val, Register tmp1, Register tmp2);
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virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
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Register obj, Register tmp, Label& slowpath);
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virtual void tlab_allocate(MacroAssembler* masm,
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Register obj, // result: pointer to object after successful allocation
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Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
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int con_size_in_bytes, // object size in bytes if known at compile time
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Register tmp1, // temp register
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Register tmp2, // temp register
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Label& slow_case, // continuation point if fast allocation fails
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bool is_far = false
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);
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virtual void barrier_stubs_init() {}
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virtual NMethodPatchingType nmethod_patching_type() { return NMethodPatchingType::stw_instruction_and_data_patch; }
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virtual void nmethod_entry_barrier(MacroAssembler* masm, Label* slow_path, Label* continuation, Label* guard);
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virtual void c2i_entry_barrier(MacroAssembler* masm);
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static address patching_epoch_addr();
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static void clear_patching_epoch();
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static void increment_patching_epoch();
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};
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#endif // CPU_RISCV_GC_SHARED_BARRIERSETASSEMBLER_RISCV_HPP
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