1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "asm/macroAssembler.inline.hpp" 27 #include "gc/shared/modRefBSCodeGen.hpp" 28 29 #define __ masm-> 30 31 void ModRefBSCodeGen::arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 32 Register src, Register dst, Register count) { 33 if (type == T_OBJECT) { 34 bool covariant = (decorators & DEST_COVARIANT) != 0; 35 if (covariant) { 36 // save arguments for barrier generation 37 __ mov(dst, G1); 38 __ mov(count, G5); 39 gen_write_ref_array_pre_barrier(masm, decorators, G1, G5); 40 } else { 41 gen_write_ref_array_pre_barrier(masm, decorators, dst, count); 42 } 43 } 44 } 45 46 void ModRefBSCodeGen::arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 47 Register src, Register dst, Register count) { 48 if (type == T_OBJECT) { 49 bool covariant = (decorators & DEST_COVARIANT) != 0; 50 if (covariant) { 51 // O0 is used as temp register 52 gen_write_ref_array_post_barrier(masm, decorators, G1, G5, O0); 53 } else { 54 gen_write_ref_array_post_barrier(masm, decorators, dst, count, O3); 55 } 56 } 57 } 58 59 void ModRefBSCodeGen::oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 60 Register base, Register index, int offset, Register val, Register tmp) { 61 BarrierSetCodeGen::store_at(masm, decorators, type, base, index, offset, val, tmp); 62 } 63 64 void ModRefBSCodeGen::store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 65 Register base, Register index, int offset, Register val, Register tmp) { 66 if (type == T_OBJECT || type == T_ARRAY) { 67 oop_store_at(masm, decorators, type, base, index, offset, val, tmp); 68 } else { 69 BarrierSetCodeGen::store_at(masm, decorators, type, base, index, offset, val, tmp); 70 } 71 }