1 /* 2 * Copyright (c) 2018, 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 "gc/shared/barrierSetAssembler.hpp" 27 28 #define __ masm-> 29 30 void BarrierSetAssembler::load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 31 Register dst, Address src, Register tmp1, Register tmp2, Register tmp3) { 32 bool on_heap = (decorators & IN_HEAP) != 0; 33 bool in_native = (decorators & IN_NATIVE) != 0; 34 switch (type) { 35 case T_OBJECT: 36 case T_ARRAY: { 37 if (on_heap) { 38 #ifdef AARCH64 39 if (UseCompressedOops) { 40 __ ldr_w(dst, src); 41 __ decode_heap_oop(dst); 42 } else 43 #endif // AARCH64 44 { 45 __ ldr(dst, src); 46 } 47 } else { 48 assert(in_native, "why else?"); 49 __ ldr(dst, src); 50 } 51 break; 52 } 53 default: Unimplemented(); 54 } 55 56 } 57 58 void BarrierSetAssembler::store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 59 Address obj, Register val, Register tmp1, Register tmp2, Register tmp3, bool is_null) { 60 bool on_heap = (decorators & IN_HEAP) != 0; 61 bool in_native = (decorators & IN_NATIVE) != 0; 62 switch (type) { 63 case T_OBJECT: 64 case T_ARRAY: { 65 if (on_heap) { 66 #ifdef AARCH64 67 if (UseCompressedOops) { 68 assert(!dst.uses(src), "not enough registers"); 69 if (!is_null) { 70 __ encode_heap_oop(src); 71 } 72 __ str_w(val, obj); 73 } else 74 #endif // AARCH64 75 { 76 __ str(val, obj); 77 } 78 } else { 79 assert(in_native, "why else?"); 80 __ str(val, obj); 81 } 82 break; 83 } 84 default: Unimplemented(); 85 } 86 } 87