1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2018, SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #include "precompiled.hpp" 27 #include "asm/macroAssembler.inline.hpp" 28 #include "gc/shared/modRefBSCodeGen.hpp" 29 30 #define __ masm-> 31 32 void ModRefBSCodeGen::arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 33 Register src, Register dst, Register count, Register preserve1, Register preserve2) { 34 if (type == T_OBJECT) { 35 gen_write_ref_array_pre_barrier(masm, decorators, src, dst, count, preserve1, preserve2); 36 37 bool checkcast = (decorators & ARRAYCOPY_CHECKCAST) != 0; 38 if (!checkcast) { 39 assert_different_registers(dst, count, R9_ARG7, R10_ARG8); 40 // Save some arguments for epilogue, e.g. disjoint_long_copy_core destroys them. 41 __ mr(R9_ARG7, dst); 42 __ mr(R10_ARG8, count); 43 } 44 } 45 } 46 47 void ModRefBSCodeGen::arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 48 Register dst, Register count, Register preserve) { 49 if (type == T_OBJECT) { 50 bool checkcast = (decorators & ARRAYCOPY_CHECKCAST) != 0; 51 if (!checkcast) { 52 gen_write_ref_array_post_barrier(masm, decorators, R9_ARG7, R10_ARG8, preserve); 53 } else { 54 gen_write_ref_array_post_barrier(masm, decorators, dst, count, preserve); 55 } 56 } 57 }