author | lfoltan |
Mon, 23 Sep 2019 14:49:04 -0400 | |
changeset 58273 | 08a5148e7c4e |
parent 54755 | de34f4b370b0 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, 2019, Oracle and/or its affiliates. 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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|
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#include "precompiled.hpp" |
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#include "asm/macroAssembler.inline.hpp" |
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#include "gc/shared/modRefBarrierSetAssembler.hpp" |
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|
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#define __ masm-> |
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|
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void ModRefBarrierSetAssembler::arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type, |
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Register src, Register dst, Register count) { |
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bool checkcast = (decorators & ARRAYCOPY_CHECKCAST) != 0; |
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bool disjoint = (decorators & ARRAYCOPY_DISJOINT) != 0; |
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bool obj_int = type == T_OBJECT LP64_ONLY(&& UseCompressedOops); |
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|
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if (is_reference_type(type)) { |
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#ifdef _LP64 |
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if (!checkcast) { |
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if (!obj_int) { |
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// Save count for barrier |
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__ movptr(r11, count); |
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} else if (disjoint) { |
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// Save dst in r11 in the disjoint case |
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__ movq(r11, dst); |
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} |
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} |
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#else |
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if (disjoint) { |
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__ mov(rdx, dst); // save 'to' |
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} |
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#endif |
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gen_write_ref_array_pre_barrier(masm, decorators, dst, count); |
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} |
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} |
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void ModRefBarrierSetAssembler::arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type, |
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Register src, Register dst, Register count) { |
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bool checkcast = (decorators & ARRAYCOPY_CHECKCAST) != 0; |
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bool disjoint = (decorators & ARRAYCOPY_DISJOINT) != 0; |
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bool obj_int = type == T_OBJECT LP64_ONLY(&& UseCompressedOops); |
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Register tmp = rax; |
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if (is_reference_type(type)) { |
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#ifdef _LP64 |
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if (!checkcast) { |
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if (!obj_int) { |
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// Save count for barrier |
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count = r11; |
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} else if (disjoint) { |
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// Use the saved dst in the disjoint case |
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dst = r11; |
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} |
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} else { |
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tmp = rscratch1; |
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} |
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#else |
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if (disjoint) { |
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__ mov(dst, rdx); // restore 'to' |
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} |
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#endif |
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gen_write_ref_array_post_barrier(masm, decorators, dst, count, tmp); |
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} |
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} |
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void ModRefBarrierSetAssembler::store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, |
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Address dst, Register val, Register tmp1, Register tmp2) { |
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if (is_reference_type(type)) { |
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oop_store_at(masm, decorators, type, dst, val, tmp1, tmp2); |
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} else { |
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BarrierSetAssembler::store_at(masm, decorators, type, dst, val, tmp1, tmp2); |
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} |
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} |