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MinidumpTypes.cpp
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1 //===-- MinidumpTypes.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 "MinidumpTypes.h"
10 
11 // C includes
12 // C++ includes
13 
14 using namespace lldb_private;
15 using namespace minidump;
16 
17 // MinidumpMiscInfo
18 const MinidumpMiscInfo *MinidumpMiscInfo::Parse(llvm::ArrayRef<uint8_t> &data) {
19  const MinidumpMiscInfo *misc_info;
20  Status error = consumeObject(data, misc_info);
21  if (error.Fail())
22  return nullptr;
23 
24  return misc_info;
25 }
26 
27 llvm::Optional<lldb::pid_t> MinidumpMiscInfo::GetPid() const {
28  uint32_t pid_flag = static_cast<uint32_t>(MinidumpMiscInfoFlags::ProcessID);
29  if (flags1 & pid_flag)
30  return llvm::Optional<lldb::pid_t>(process_id);
31 
32  return llvm::None;
33 }
34 
35 // Linux Proc Status
36 // it's stored as an ascii string in the file
37 llvm::Optional<LinuxProcStatus>
38 LinuxProcStatus::Parse(llvm::ArrayRef<uint8_t> &data) {
39  LinuxProcStatus result;
40  result.proc_status =
41  llvm::StringRef(reinterpret_cast<const char *>(data.data()), data.size());
42  data = data.drop_front(data.size());
43 
44  llvm::SmallVector<llvm::StringRef, 0> lines;
45  result.proc_status.split(lines, '\n', 42);
46  // /proc/$pid/status has 41 lines, but why not use 42?
47  for (auto line : lines) {
48  if (line.consume_front("Pid:")) {
49  line = line.trim();
50  if (!line.getAsInteger(10, result.pid))
51  return result;
52  }
53  }
54 
55  return llvm::None;
56 }
57 
59 
60 std::pair<llvm::ArrayRef<MinidumpMemoryDescriptor64>, uint64_t>
61 MinidumpMemoryDescriptor64::ParseMemory64List(llvm::ArrayRef<uint8_t> &data) {
62  const llvm::support::ulittle64_t *mem_ranges_count;
63  Status error = consumeObject(data, mem_ranges_count);
64  if (error.Fail() ||
65  *mem_ranges_count * sizeof(MinidumpMemoryDescriptor64) > data.size())
66  return {};
67 
68  const llvm::support::ulittle64_t *base_rva;
69  error = consumeObject(data, base_rva);
70  if (error.Fail())
71  return {};
72 
73  return std::make_pair(
74  llvm::makeArrayRef(
75  reinterpret_cast<const MinidumpMemoryDescriptor64 *>(data.data()),
76  *mem_ranges_count),
77  *base_rva);
78 }
lldb_private::minidump::MinidumpMiscInfo
Definition: MinidumpTypes.h:75
lldb_private::minidump::MinidumpMemoryDescriptor64::ParseMemory64List
static std::pair< llvm::ArrayRef< MinidumpMemoryDescriptor64 >, uint64_t > ParseMemory64List(llvm::ArrayRef< uint8_t > &data)
Definition: MinidumpTypes.cpp:61
lldb_private::minidump::MinidumpMiscInfoFlags::ProcessID
@ ProcessID
lldb_private::minidump::MinidumpMiscInfo::process_id
llvm::support::ulittle32_t process_id
Definition: MinidumpTypes.h:79
MinidumpTypes.h
lldb_private::minidump::MinidumpMiscInfo::GetPid
llvm::Optional< lldb::pid_t > GetPid() const
Definition: MinidumpTypes.cpp:27
error
static llvm::raw_ostream & error(Stream &strm)
Definition: CommandReturnObject.cpp:17
lldb_private::minidump::LinuxProcStatus::proc_status
llvm::StringRef proc_status
Definition: MinidumpTypes.h:94
lldb_private::minidump::LinuxProcStatus
Definition: MinidumpTypes.h:92
lldb_private::minidump::LinuxProcStatus::Parse
static llvm::Optional< LinuxProcStatus > Parse(llvm::ArrayRef< uint8_t > &data)
Definition: MinidumpTypes.cpp:38
lldb_private::minidump::LinuxProcStatus::GetPid
lldb::pid_t GetPid() const
Definition: MinidumpTypes.cpp:58
lldb_private::minidump::MinidumpMiscInfo::flags1
llvm::support::ulittle32_t flags1
Definition: MinidumpTypes.h:78
lldb_private::Status
Definition: Status.h:44
uint32_t
lldb_private::minidump::MinidumpMiscInfo::Parse
static const MinidumpMiscInfo * Parse(llvm::ArrayRef< uint8_t > &data)
Definition: MinidumpTypes.cpp:18
lldb::pid_t
uint64_t pid_t
Definition: lldb-types.h:85
lldb_private::minidump::MinidumpMemoryDescriptor64
Definition: MinidumpTypes.h:62
lldb_private::minidump::consumeObject
Status consumeObject(llvm::ArrayRef< uint8_t > &Buffer, const T *&Object)
Definition: MinidumpTypes.h:50
lldb_private::minidump::LinuxProcStatus::pid
lldb::pid_t pid
Definition: MinidumpTypes.h:95
lldb_private
A class that represents a running process on the host machine.
Definition: SBCommandInterpreterRunOptions.h:16