1 /*
2 * Copyright (c) 2008, 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 "precompiled.hpp"
26 #include "asm/assembler.hpp"
27 #include "assembler_arm.inline.hpp"
28 #include "code/icBuffer.hpp"
29 #include "gc/shared/collectedHeap.inline.hpp"
30 #include "interpreter/bytecodes.hpp"
31 #include "memory/resourceArea.hpp"
32 #include "nativeInst_arm.hpp"
33 #include "oops/oop.inline.hpp"
34
35 #define __ masm->
36
ic_stub_code_size()37 int InlineCacheBuffer::ic_stub_code_size() {
38 return (AARCH64_ONLY(8) NOT_AARCH64(4)) * Assembler::InstructionSize;
39 }
40
assemble_ic_buffer_code(address code_begin,void * cached_value,address entry_point)41 void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point) {
42 ResourceMark rm;
43 CodeBuffer code(code_begin, ic_stub_code_size());
44 MacroAssembler* masm = new MacroAssembler(&code);
45
46 InlinedAddress oop_literal((address) cached_value);
47 __ ldr_literal(Ricklass, oop_literal);
48 // FIXME: OK to remove reloc here?
49 __ patchable_jump(entry_point, relocInfo::runtime_call_type, Rtemp);
50 __ bind_literal(oop_literal);
51 __ flush();
52 }
53
ic_buffer_entry_point(address code_begin)54 address InlineCacheBuffer::ic_buffer_entry_point(address code_begin) {
55 address jump_address;
56 jump_address = code_begin + NativeInstruction::instruction_size;
57 NativeJump* jump = nativeJump_at(jump_address);
58 return jump->jump_destination();
59 }
60
ic_buffer_cached_value(address code_begin)61 void* InlineCacheBuffer::ic_buffer_cached_value(address code_begin) {
62 NativeMovConstReg* move = nativeMovConstReg_at(code_begin);
63 return (void*)move->data();
64 }
65
66 #undef __
67