1//===-- MinidumpParser.h -----------------------------------------*- C++-*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_MINIDUMPPARSER_H
10#define LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_MINIDUMPPARSER_H
11
12#include "MinidumpTypes.h"
13
14#include "lldb/Target/MemoryRegionInfo.h"
15#include "lldb/Utility/ArchSpec.h"
16#include "lldb/Utility/DataBuffer.h"
17#include "lldb/Utility/Status.h"
18#include "lldb/Utility/UUID.h"
19
20#include "llvm/ADT/ArrayRef.h"
21#include "llvm/ADT/DenseMap.h"
22#include "llvm/ADT/StringRef.h"
23#include "llvm/Object/Minidump.h"
24
25// C includes
26
27// C++ includes
28#include <cstring>
29#include <optional>
30#include <unordered_map>
31
32namespace lldb_private {
33
34namespace minidump {
35
36// Describes a range of memory captured in the Minidump
37struct Range {
38  lldb::addr_t start; // virtual address of the beginning of the range
39  // range_ref - absolute pointer to the first byte of the range and size
40  llvm::ArrayRef<uint8_t> range_ref;
41
42  Range(lldb::addr_t start, llvm::ArrayRef<uint8_t> range_ref)
43      : start(start), range_ref(range_ref) {}
44
45  friend bool operator==(const Range &lhs, const Range &rhs) {
46    return lhs.start == rhs.start && lhs.range_ref == rhs.range_ref;
47  }
48};
49
50class MinidumpParser {
51public:
52  static llvm::Expected<MinidumpParser>
53  Create(const lldb::DataBufferSP &data_buf_sp);
54
55  llvm::ArrayRef<uint8_t> GetData();
56
57  llvm::ArrayRef<uint8_t> GetStream(StreamType stream_type);
58
59  UUID GetModuleUUID(const minidump::Module *module);
60
61  llvm::ArrayRef<minidump::Thread> GetThreads();
62
63  llvm::ArrayRef<uint8_t> GetThreadContext(const LocationDescriptor &location);
64
65  llvm::ArrayRef<uint8_t> GetThreadContext(const minidump::Thread &td);
66
67  llvm::ArrayRef<uint8_t> GetThreadContextWow64(const minidump::Thread &td);
68
69  ArchSpec GetArchitecture();
70
71  const MinidumpMiscInfo *GetMiscInfo();
72
73  std::optional<LinuxProcStatus> GetLinuxProcStatus();
74
75  std::optional<lldb::pid_t> GetPid();
76
77  llvm::ArrayRef<minidump::Module> GetModuleList();
78
79  // There are cases in which there is more than one record in the ModuleList
80  // for the same module name.(e.g. when the binary has non contiguous segments)
81  // So this function returns a filtered module list - if it finds records that
82  // have the same name, it keeps the copy with the lowest load address.
83  std::vector<const minidump::Module *> GetFilteredModuleList();
84
85  const llvm::minidump::ExceptionStream *GetExceptionStream();
86
87  std::optional<Range> FindMemoryRange(lldb::addr_t addr);
88
89  llvm::ArrayRef<uint8_t> GetMemory(lldb::addr_t addr, size_t size);
90
91  /// Returns a list of memory regions and a flag indicating whether the list is
92  /// complete (includes all regions mapped into the process memory).
93  std::pair<MemoryRegionInfos, bool> BuildMemoryRegions();
94
95  static llvm::StringRef GetStreamTypeAsString(StreamType stream_type);
96
97  llvm::object::MinidumpFile &GetMinidumpFile() { return *m_file; }
98
99  static MemoryRegionInfo GetMemoryRegionInfo(const MemoryRegionInfos &regions,
100                                              lldb::addr_t load_addr);
101
102private:
103  MinidumpParser(lldb::DataBufferSP data_sp,
104                 std::unique_ptr<llvm::object::MinidumpFile> file);
105
106  lldb::DataBufferSP m_data_sp;
107  std::unique_ptr<llvm::object::MinidumpFile> m_file;
108  ArchSpec m_arch;
109};
110
111} // end namespace minidump
112} // end namespace lldb_private
113#endif // LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_MINIDUMPPARSER_H
114