mterp.h revision 6740997e6934bbca27d5830a32352d82aabbd38b 
1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_INTERPRETER_MTERP_MTERP_H_
18#define ART_RUNTIME_INTERPRETER_MTERP_MTERP_H_
19
20/*
21 * Mterp assembly handler bases
22 */
23extern "C" void* artMterpAsmInstructionStart[];
24extern "C" void* artMterpAsmInstructionEnd[];
25extern "C" void* artMterpAsmAltInstructionStart[];
26extern "C" void* artMterpAsmAltInstructionEnd[];
27
28namespace art {
29namespace interpreter {
30
31void InitMterpTls(Thread* self);
32void CheckMterpAsmConstants();
33
34// The return type should be 'bool' but our assembly stubs expect 'bool'
35// to be zero-extended to the whole register and that's broken on x86-64
36// as a 'bool' is returned in 'al' and the rest of 'rax' is garbage.
37// TODO: Fix mterp and stubs and revert this workaround. http://b/30232671
38extern "C" size_t MterpShouldSwitchInterpreters();
39
40// Poison value for TestExportPC.  If we segfault with this value, it means that a mterp
41// handler for a recent opcode failed to export the Dalvik PC prior to a possible exit from
42// the mterp environment.
43constexpr uintptr_t kExportPCPoison = 0xdead00ff;
44// Set true to enable poison testing of ExportPC.  Uses Alt interpreter.
45constexpr bool kTestExportPC = false;
46
47}  // namespace interpreter
48}  // namespace art
49
50#endif  // ART_RUNTIME_INTERPRETER_MTERP_MTERP_H_
51