1 files changed, 39 insertions, 0 deletions
diff --git a/source/Plugins/Process/elf-core/RegisterUtilities.cpp b/source/Plugins/Process/elf-core/RegisterUtilities.cpp
new file mode 100644
index 000000000000..3837abadd0f6
--- /dev/null
+++ b/source/Plugins/Process/elf-core/RegisterUtilities.cpp
@@ -0,0 +1,39 @@
+//===-- RegisterUtilities.cpp -----------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Plugins/Process/elf-core/RegisterUtilities.h"
+#include "llvm/ADT/STLExtras.h"
+
+using namespace lldb_private;
+
+static llvm::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 llvm::None;
+}
+
+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() : Iter->data;
+}