1 | //===-- RegisterUtilities.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 "Plugins/Process/elf-core/RegisterUtilities.h" |
10 | #include "llvm/ADT/STLExtras.h" |
11 | #include <optional> |
12 | |
13 | using namespace lldb_private; |
14 | |
15 | static std::optional<uint32_t> |
16 | getNoteType(const llvm::Triple &Triple, |
17 | llvm::ArrayRef<RegsetDesc> RegsetDescs) { |
18 | for (const auto &Entry : RegsetDescs) { |
19 | if (Entry.OS != Triple.getOS()) |
20 | continue; |
21 | if (Entry.Arch != llvm::Triple::UnknownArch && |
22 | Entry.Arch != Triple.getArch()) |
23 | continue; |
24 | return Entry.Note; |
25 | } |
26 | return std::nullopt; |
27 | } |
28 | |
29 | DataExtractor lldb_private::getRegset(llvm::ArrayRef<CoreNote> Notes, |
30 | const llvm::Triple &Triple, |
31 | llvm::ArrayRef<RegsetDesc> RegsetDescs) { |
32 | auto TypeOr = getNoteType(Triple, RegsetDescs); |
33 | if (!TypeOr) |
34 | return DataExtractor(); |
35 | uint32_t Type = *TypeOr; |
36 | auto Iter = llvm::find_if( |
37 | Range&: Notes, P: [Type](const CoreNote &Note) { return Note.info.n_type == Type; }); |
38 | return Iter == Notes.end() ? DataExtractor() : DataExtractor(Iter->data); |
39 | } |
40 |