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//===-- RegisterUtilities.cpp ---------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "Plugins/Process/elf-core/RegisterUtilities.h"
#include "llvm/ADT/STLExtras.h"
#include <optional>
using namespace lldb_private;
static std::optional<uint32_t>
getNoteType(const llvm::Triple &Triple,
llvm::ArrayRef<RegsetDesc> RegsetDescs) {
for (const auto &Entry : RegsetDescs) {
if (Entry.OS != Triple.getOS())
continue;
if (Entry.Arch != llvm::Triple::UnknownArch &&
Entry.Arch != Triple.getArch())
continue;
return Entry.Note;
}
return std::nullopt;
}
DataExtractor lldb_private::getRegset(llvm::ArrayRef<CoreNote> Notes,
const llvm::Triple &Triple,
llvm::ArrayRef<RegsetDesc> RegsetDescs) {
auto TypeOr = getNoteType(Triple, RegsetDescs);
if (!TypeOr)
return DataExtractor();
uint32_t Type = *TypeOr;
auto Iter = llvm::find_if(
Notes, [Type](const CoreNote &Note) { return Note.info.n_type == Type; });
return Iter == Notes.end() ? DataExtractor() : DataExtractor(Iter->data);
}
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