| /* |
| * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "asm/macroAssembler.inline.hpp" |
| #include "gc/shared/barrierSetAssembler.hpp" |
| #include "interpreter/interp_masm.hpp" |
| #include "runtime/jniHandles.hpp" |
| |
| #define __ masm-> |
| |
| void BarrierSetAssembler::store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, |
| Register val, Address dst, Register tmp) { |
| bool in_heap = (decorators & IN_HEAP) != 0; |
| bool in_native = (decorators & IN_NATIVE) != 0; |
| bool is_not_null = (decorators & IS_NOT_NULL) != 0; |
| |
| switch (type) { |
| case T_ARRAY: |
| case T_OBJECT: { |
| if (in_heap) { |
| if (dst.has_disp() && !Assembler::is_simm13(dst.disp())) { |
| assert(!dst.has_index(), "not supported yet"); |
| __ set(dst.disp(), tmp); |
| dst = Address(dst.base(), tmp); |
| } |
| if (UseCompressedOops) { |
| assert(dst.base() != val, "not enough registers"); |
| if (is_not_null) { |
| __ encode_heap_oop_not_null(val); |
| } else { |
| __ encode_heap_oop(val); |
| } |
| __ st(val, dst); |
| } else { |
| __ st_ptr(val, dst); |
| } |
| } else { |
| assert(in_native, "why else?"); |
| __ st_ptr(val, dst); |
| } |
| break; |
| } |
| default: Unimplemented(); |
| } |
| } |
| |
| void BarrierSetAssembler::load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, |
| Address src, Register dst, Register tmp) { |
| bool in_heap = (decorators & IN_HEAP) != 0; |
| bool in_native = (decorators & IN_NATIVE) != 0; |
| bool is_not_null = (decorators & IS_NOT_NULL) != 0; |
| |
| switch (type) { |
| case T_ARRAY: |
| case T_OBJECT: { |
| if (in_heap) { |
| if (src.has_disp() && !Assembler::is_simm13(src.disp())) { |
| assert(!src.has_index(), "not supported yet"); |
| __ set(src.disp(), tmp); |
| src = Address(src.base(), tmp); |
| } |
| if (UseCompressedOops) { |
| __ lduw(src, dst); |
| if (is_not_null) { |
| __ decode_heap_oop_not_null(dst); |
| } else { |
| __ decode_heap_oop(dst); |
| } |
| } else { |
| __ ld_ptr(src, dst); |
| } |
| } else { |
| assert(in_native, "why else?"); |
| __ ld_ptr(src, dst); |
| } |
| break; |
| } |
| default: Unimplemented(); |
| } |
| } |
| |
| void BarrierSetAssembler::try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env, |
| Register obj, Register tmp, Label& slowpath) { |
| __ andn(obj, JNIHandles::weak_tag_mask, obj); |
| __ ld_ptr(obj, 0, obj); |
| } |