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 _LIBUNWINDSTACK_DWARF_LOCATION_H
18 #define _LIBUNWINDSTACK_DWARF_LOCATION_H
19 
20 #include <stdint.h>
21 
22 #include <unordered_map>
23 
24 namespace unwindstack {
25 
26 struct DwarfCie;
27 
28 enum DwarfLocationEnum : uint8_t {
29   DWARF_LOCATION_INVALID = 0,
30   DWARF_LOCATION_UNDEFINED,
31   DWARF_LOCATION_OFFSET,
32   DWARF_LOCATION_VAL_OFFSET,
33   DWARF_LOCATION_REGISTER,
34   DWARF_LOCATION_EXPRESSION,
35   DWARF_LOCATION_VAL_EXPRESSION,
36   DWARF_LOCATION_PSEUDO_REGISTER,
37 };
38 
39 struct DwarfLocation {
40   DwarfLocationEnum type;
41   uint64_t values[2];
42 };
43 
44 struct DwarfLocations : public std::unordered_map<uint32_t, DwarfLocation> {
45   const DwarfCie* cie;
46   // The range of PCs where the locations are valid (end is exclusive).
47   uint64_t pc_start = 0;
48   uint64_t pc_end = 0;
49 };
50 
51 }  // namespace unwindstack
52 
53 #endif  // _LIBUNWINDSTACK_DWARF_LOCATION_H
54