| 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 |