1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
//===-- MinidumpParser.cpp ---------------------------------------*- C++
//-*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// Project includes
#include "MinidumpParser.h"
// Other libraries and framework includes
// C includes
// C++ includes
using namespace lldb_private;
using namespace minidump;
llvm::Optional<MinidumpParser>
MinidumpParser::Create(const lldb::DataBufferSP &data_buf_sp) {
if (data_buf_sp->GetByteSize() < sizeof(MinidumpHeader)) {
return llvm::None;
}
llvm::ArrayRef<uint8_t> header_data(data_buf_sp->GetBytes(),
sizeof(MinidumpHeader));
const MinidumpHeader *header = MinidumpHeader::Parse(header_data);
if (header == nullptr) {
return llvm::None;
}
lldb::offset_t directory_list_offset = header->stream_directory_rva;
// check if there is enough data for the parsing of the directory list
if ((directory_list_offset +
sizeof(MinidumpDirectory) * header->streams_count) >
data_buf_sp->GetByteSize()) {
return llvm::None;
}
const MinidumpDirectory *directory = nullptr;
Error error;
llvm::ArrayRef<uint8_t> directory_data(
data_buf_sp->GetBytes() + directory_list_offset,
sizeof(MinidumpDirectory) * header->streams_count);
llvm::DenseMap<uint32_t, MinidumpLocationDescriptor> directory_map;
for (uint32_t i = 0; i < header->streams_count; ++i) {
error = consumeObject(directory_data, directory);
if (error.Fail()) {
return llvm::None;
}
directory_map[static_cast<const uint32_t>(directory->stream_type)] =
directory->location;
}
MinidumpParser parser(data_buf_sp, header, directory_map);
return llvm::Optional<MinidumpParser>(parser);
}
MinidumpParser::MinidumpParser(
const lldb::DataBufferSP &data_buf_sp, const MinidumpHeader *header,
const llvm::DenseMap<uint32_t, MinidumpLocationDescriptor> &directory_map)
: m_data_sp(data_buf_sp), m_header(header), m_directory_map(directory_map) {
}
lldb::offset_t MinidumpParser::GetByteSize() {
return m_data_sp->GetByteSize();
}
llvm::Optional<llvm::ArrayRef<uint8_t>>
MinidumpParser::GetStream(MinidumpStreamType stream_type) {
auto iter = m_directory_map.find(static_cast<uint32_t>(stream_type));
if (iter == m_directory_map.end())
return llvm::None;
// check if there is enough data
if (iter->second.rva + iter->second.data_size > m_data_sp->GetByteSize())
return llvm::None;
llvm::ArrayRef<uint8_t> arr_ref(m_data_sp->GetBytes() + iter->second.rva,
iter->second.data_size);
return llvm::Optional<llvm::ArrayRef<uint8_t>>(arr_ref);
}
llvm::Optional<std::vector<const MinidumpThread *>>
MinidumpParser::GetThreads() {
llvm::Optional<llvm::ArrayRef<uint8_t>> data =
GetStream(MinidumpStreamType::ThreadList);
if (!data)
return llvm::None;
return MinidumpThread::ParseThreadList(data.getValue());
}
const MinidumpSystemInfo *MinidumpParser::GetSystemInfo() {
llvm::Optional<llvm::ArrayRef<uint8_t>> data =
GetStream(MinidumpStreamType::SystemInfo);
if (!data)
return nullptr;
return MinidumpSystemInfo::Parse(data.getValue());
}
ArchSpec MinidumpParser::GetArchitecture() {
ArchSpec arch_spec;
arch_spec.GetTriple().setOS(llvm::Triple::OSType::UnknownOS);
arch_spec.GetTriple().setVendor(llvm::Triple::VendorType::UnknownVendor);
arch_spec.GetTriple().setArch(llvm::Triple::ArchType::UnknownArch);
// TODO should we add the OS type here, or somewhere else ?
const MinidumpSystemInfo *system_info = GetSystemInfo();
if (!system_info)
return arch_spec;
// TODO what to do about big endiand flavors of arm ?
// TODO set the arm subarch stuff if the minidump has info about it
const MinidumpCPUArchitecture arch =
static_cast<const MinidumpCPUArchitecture>(
static_cast<const uint32_t>(system_info->processor_arch));
switch (arch) {
case MinidumpCPUArchitecture::X86:
arch_spec.GetTriple().setArch(llvm::Triple::ArchType::x86);
break;
case MinidumpCPUArchitecture::AMD64:
arch_spec.GetTriple().setArch(llvm::Triple::ArchType::x86_64);
break;
case MinidumpCPUArchitecture::ARM:
arch_spec.GetTriple().setArch(llvm::Triple::ArchType::arm);
break;
case MinidumpCPUArchitecture::ARM64:
arch_spec.GetTriple().setArch(llvm::Triple::ArchType::aarch64);
break;
}
return arch_spec;
}
const MinidumpMiscInfo *MinidumpParser::GetMiscInfo() {
llvm::Optional<llvm::ArrayRef<uint8_t>> data =
GetStream(MinidumpStreamType::MiscInfo);
if (!data)
return nullptr;
return MinidumpMiscInfo::Parse(data.getValue());
}
|
