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 "gc/shared/barrierSetCodeGen.hpp" 26 #include "interpreter/interp_masm.hpp" 27 28 #define __ masm-> 29 30 void BarrierSetCodeGen::store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 31 Register base, Register index, int offset, Register val, Register tmp) { 32 bool on_heap = (decorators & ACCESS_ON_HEAP) != 0; 33 bool on_root = (decorators & ACCESS_ON_ROOT) != 0; 34 35 switch (type) { 36 case T_ARRAY: 37 case T_OBJECT: { 38 if (on_heap) { 39 if (index == noreg ) { 40 if (Assembler::is_simm13(offset)) { 41 __ store_heap_oop(val, base, offset); 42 } else { 43 __ set(offset, tmp); 44 __ store_heap_oop(val, base, tmp); 45 } 46 } else { 47 assert(offset == 0, "not implemented yet"); 48 __ store_heap_oop(val, base, index); 49 } 50 } else { 51 assert(on_root, "why else?"); 52 assert(Assembler::is_simm13(offset), "not supported yet"); 53 assert(index == noreg, "not supported yet"); 54 __ st_ptr(val, base, offset); 55 } 56 break; 57 } 58 default: Unimplemented(); 59 } 60 } 61 62 void BarrierSetCodeGen::load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 63 Register base, Register index, int offset, Register dst, Register tmp) { 64 bool on_heap = (decorators & ACCESS_ON_HEAP) != 0; 65 bool on_root = (decorators & ACCESS_ON_ROOT) != 0; 66 67 switch (type) { 68 case T_ARRAY: 69 case T_OBJECT: { 70 if (on_heap) { 71 if (index == noreg ) { 72 if (Assembler::is_simm13(offset)) { 73 __ load_heap_oop(base, offset, dst); 74 } else { 75 __ set(offset, tmp); 76 __ load_heap_oop(base, tmp, dst); 77 } 78 } else { 79 assert(offset == 0, "not implemented yet"); 80 __ load_heap_oop(base, index, dst); 81 } 82 } else { 83 assert(on_root, "why else?"); 84 assert(Assembler::is_simm13(offset), "not supported yet"); 85 assert(index == noreg, "not supported yet"); 86 __ ld_ptr(base, offset, dst); 87 } 88 break; 89 } 90 default: Unimplemented(); 91 } 92 }