1 | //===-- ObjectFileMinidump.cpp --------------------------------------------===// |
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 | #include "ObjectFileMinidump.h" |
10 | |
11 | #include "MinidumpFileBuilder.h" |
12 | |
13 | #include "lldb/Core/ModuleSpec.h" |
14 | #include "lldb/Core/PluginManager.h" |
15 | #include "lldb/Core/Section.h" |
16 | #include "lldb/Target/Process.h" |
17 | #include "lldb/Utility/LLDBLog.h" |
18 | #include "lldb/Utility/Log.h" |
19 | |
20 | #include "llvm/Support/FileSystem.h" |
21 | |
22 | using namespace lldb; |
23 | using namespace lldb_private; |
24 | |
25 | LLDB_PLUGIN_DEFINE(ObjectFileMinidump) |
26 | |
27 | void ObjectFileMinidump::Initialize() { |
28 | PluginManager::RegisterPlugin( |
29 | name: GetPluginNameStatic(), description: GetPluginDescriptionStatic(), create_callback: CreateInstance, |
30 | create_memory_callback: CreateMemoryInstance, get_module_specifications: GetModuleSpecifications, save_core: SaveCore); |
31 | } |
32 | |
33 | void ObjectFileMinidump::Terminate() { |
34 | PluginManager::UnregisterPlugin(create_callback: CreateInstance); |
35 | } |
36 | |
37 | ObjectFile *ObjectFileMinidump::CreateInstance( |
38 | const lldb::ModuleSP &module_sp, lldb::DataBufferSP data_sp, |
39 | lldb::offset_t data_offset, const lldb_private::FileSpec *file, |
40 | lldb::offset_t offset, lldb::offset_t length) { |
41 | return nullptr; |
42 | } |
43 | |
44 | ObjectFile *ObjectFileMinidump::CreateMemoryInstance( |
45 | const lldb::ModuleSP &module_sp, WritableDataBufferSP data_sp, |
46 | const ProcessSP &process_sp, lldb::addr_t ) { |
47 | return nullptr; |
48 | } |
49 | |
50 | size_t ObjectFileMinidump::GetModuleSpecifications( |
51 | const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, |
52 | lldb::offset_t data_offset, lldb::offset_t file_offset, |
53 | lldb::offset_t length, lldb_private::ModuleSpecList &specs) { |
54 | specs.Clear(); |
55 | return 0; |
56 | } |
57 | |
58 | struct DumpFailRemoveHolder { |
59 | DumpFailRemoveHolder(MinidumpFileBuilder &builder) : m_builder(builder) {} |
60 | |
61 | ~DumpFailRemoveHolder() { |
62 | if (!m_success) |
63 | m_builder.DeleteFile(); |
64 | } |
65 | |
66 | void SetSuccess() { m_success = true; } |
67 | |
68 | private: |
69 | MinidumpFileBuilder &m_builder; |
70 | bool m_success = false; |
71 | }; |
72 | |
73 | bool ObjectFileMinidump::SaveCore(const lldb::ProcessSP &process_sp, |
74 | lldb_private::SaveCoreOptions &options, |
75 | lldb_private::Status &error) { |
76 | // Output file and process_sp are both checked in PluginManager::SaveCore. |
77 | assert(options.GetOutputFile().has_value()); |
78 | assert(process_sp); |
79 | |
80 | // Minidump defaults to stacks only. |
81 | if (options.GetStyle() == SaveCoreStyle::eSaveCoreUnspecified) |
82 | options.SetStyle(SaveCoreStyle::eSaveCoreStackOnly); |
83 | |
84 | llvm::Expected<lldb::FileUP> maybe_core_file = FileSystem::Instance().Open( |
85 | file_spec: options.GetOutputFile().value(), |
86 | options: File::eOpenOptionWriteOnly | File::eOpenOptionCanCreate); |
87 | if (!maybe_core_file) { |
88 | error = Status::FromError(error: maybe_core_file.takeError()); |
89 | return false; |
90 | } |
91 | MinidumpFileBuilder builder(std::move(maybe_core_file.get()), process_sp, |
92 | options); |
93 | DumpFailRemoveHolder request(builder); |
94 | |
95 | Log *log = GetLog(mask: LLDBLog::Object); |
96 | error = builder.AddHeaderAndCalculateDirectories(); |
97 | if (error.Fail()) { |
98 | LLDB_LOGF(log, "AddHeaderAndCalculateDirectories failed: %s" , |
99 | error.AsCString()); |
100 | return false; |
101 | }; |
102 | error = builder.AddSystemInfo(); |
103 | if (error.Fail()) { |
104 | LLDB_LOGF(log, "AddSystemInfo failed: %s" , error.AsCString()); |
105 | return false; |
106 | } |
107 | |
108 | error = builder.AddModuleList(); |
109 | if (error.Fail()) { |
110 | LLDB_LOGF(log, "AddModuleList failed: %s" , error.AsCString()); |
111 | return false; |
112 | } |
113 | error = builder.AddMiscInfo(); |
114 | if (error.Fail()) { |
115 | LLDB_LOGF(log, "AddMiscInfo failed: %s" , error.AsCString()); |
116 | return false; |
117 | } |
118 | |
119 | error = builder.AddThreadList(); |
120 | if (error.Fail()) { |
121 | LLDB_LOGF(log, "AddThreadList failed: %s" , error.AsCString()); |
122 | return false; |
123 | } |
124 | |
125 | error = builder.AddLinuxFileStreams(); |
126 | if (error.Fail()) { |
127 | LLDB_LOGF(log, "AddLinuxFileStreams failed: %s" , error.AsCString()); |
128 | return false; |
129 | } |
130 | |
131 | // Add any exceptions but only if there are any in any threads. |
132 | error = builder.AddExceptions(); |
133 | if (error.Fail()) { |
134 | LLDB_LOGF(log, "AddExceptions failed: %s" , error.AsCString()); |
135 | return false; |
136 | } |
137 | |
138 | // Note: add memory HAS to be the last thing we do. It can overflow into 64b |
139 | // land and many RVA's only support 32b |
140 | error = builder.AddMemoryList(); |
141 | if (error.Fail()) { |
142 | LLDB_LOGF(log, "AddMemoryList failed: %s" , error.AsCString()); |
143 | return false; |
144 | } |
145 | |
146 | error = builder.DumpFile(); |
147 | if (error.Fail()) { |
148 | LLDB_LOGF(log, "DumpFile failed: %s" , error.AsCString()); |
149 | return false; |
150 | } |
151 | |
152 | request.SetSuccess(); |
153 | |
154 | return true; |
155 | } |
156 | |