Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/lldb/source/Plugins/SymbolFile/DWARF/DWARFDataExtractor.cpp

@@ -0,0 +1,27 @@
+//===-- DWARFDataExtractor.cpp ----------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "DWARFDataExtractor.h"
+
+namespace lldb_private {
+
+uint64_t
+DWARFDataExtractor::GetDWARFInitialLength(lldb::offset_t *offset_ptr) const {
+  uint64_t length = GetU32(offset_ptr);
+  m_is_dwarf64 = (length == UINT32_MAX);
+  if (m_is_dwarf64)
+    length = GetU64(offset_ptr);
+  return length;
+}
+
+dw_offset_t
+DWARFDataExtractor::GetDWARFOffset(lldb::offset_t *offset_ptr) const {
+  return GetMaxU64(offset_ptr, m_is_dwarf64 ? 8 : 4);
+}
+}