1//===-- MinidumpTypes.cpp ---------------------------------------*- 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#include "MinidumpTypes.h"
10
11// C includes
12// C++ includes
13
14using namespace lldb_private;
15using namespace minidump;
16
17// MinidumpMiscInfo
18const 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
27llvm::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
37llvm::Optional<LinuxProcStatus>
38LinuxProcStatus::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
58lldb::pid_t LinuxProcStatus::GetPid() const { return pid; }
59
60std::pair<llvm::ArrayRef<MinidumpMemoryDescriptor64>, uint64_t>
61MinidumpMemoryDescriptor64::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}
79