--- /dev/null 2016-08-24 15:41:39.598575000 -0400 +++ new/hotspot/src/cpu/arm/vm/icBuffer_arm.cpp 2016-12-02 11:20:42.669726348 -0500 @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2008, 2016, 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/assembler.hpp" +#include "assembler_arm.inline.hpp" +#include "code/icBuffer.hpp" +#include "gc/shared/collectedHeap.inline.hpp" +#include "interpreter/bytecodes.hpp" +#include "memory/resourceArea.hpp" +#include "nativeInst_arm.hpp" +#include "oops/oop.inline.hpp" + +#define __ masm-> + +int InlineCacheBuffer::ic_stub_code_size() { + return (AARCH64_ONLY(8) NOT_AARCH64(4)) * Assembler::InstructionSize; +} + +void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point) { + ResourceMark rm; + CodeBuffer code(code_begin, ic_stub_code_size()); + MacroAssembler* masm = new MacroAssembler(&code); + + InlinedAddress oop_literal((address) cached_value); + __ ldr_literal(Ricklass, oop_literal); + // FIXME: OK to remove reloc here? + __ patchable_jump(entry_point, relocInfo::runtime_call_type, Rtemp); + __ bind_literal(oop_literal); + __ flush(); +} + +address InlineCacheBuffer::ic_buffer_entry_point(address code_begin) { + address jump_address; + jump_address = code_begin + NativeInstruction::instruction_size; + NativeJump* jump = nativeJump_at(jump_address); + return jump->jump_destination(); +} + +void* InlineCacheBuffer::ic_buffer_cached_value(address code_begin) { + NativeMovConstReg* move = nativeMovConstReg_at(code_begin); + return (void*)move->data(); +} + +#undef __