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
Parse(llvm::ArrayRef<uint8_t> & data)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
GetPid() const27 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>
Parse(llvm::ArrayRef<uint8_t> & data)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
GetPid() const58 lldb::pid_t LinuxProcStatus::GetPid() const { return pid; }
59
60 std::pair<llvm::ArrayRef<MinidumpMemoryDescriptor64>, uint64_t>
ParseMemory64List(llvm::ArrayRef<uint8_t> & data)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 }
79