1 files changed, 82 insertions, 0 deletions
diff --git a/contrib/llvm/tools/lld/ELF/Strings.h b/contrib/llvm/tools/lld/ELF/Strings.h
new file mode 100644
index 000000000000..934b6427105f
--- /dev/null
+++ b/contrib/llvm/tools/lld/ELF/Strings.h
@@ -0,0 +1,82 @@
+//===- Strings.h ------------------------------------------------*- C++ -*-===//
+//
+//                             The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLD_ELF_STRINGS_H
+#define LLD_ELF_STRINGS_H
+
+#include "lld/Core/LLVM.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/BitVector.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/GlobPattern.h"
+#include <vector>
+
+namespace lld {
+namespace elf {
+
+int getPriority(StringRef S);
+bool hasWildcard(StringRef S);
+std::vector<uint8_t> parseHex(StringRef S);
+bool isValidCIdentifier(StringRef S);
+StringRef unquote(StringRef S);
+
+// This is a lazy version of StringRef. String size is computed lazily
+// when it is needed. It is more efficient than StringRef to instantiate
+// if you have a string whose size is unknown.
+//
+// ELF string tables contain a lot of null-terminated strings.
+// Most of them are not necessary for the linker because they are names
+// of local symbols and the linker doesn't use local symbol names for
+// name resolution. So, we use this class to represents strings read
+// from string tables.
+class StringRefZ {
+public:
+  StringRefZ() : Start(nullptr), Size(0) {}
+  StringRefZ(const char *S, size_t Size) : Start(S), Size(Size) {}
+
+  /*implicit*/ StringRefZ(const char *S) : Start(S), Size(-1) {}
+
+  /*implicit*/ StringRefZ(llvm::StringRef S)
+      : Start(S.data()), Size(S.size()) {}
+
+  operator llvm::StringRef() const {
+    if (Size == (size_t)-1)
+      Size = strlen(Start);
+    return {Start, Size};
+  }
+
+private:
+  const char *Start;
+  mutable size_t Size;
+};
+
+// This class represents multiple glob patterns.
+class StringMatcher {
+public:
+  StringMatcher() = default;
+  explicit StringMatcher(ArrayRef<StringRef> Pat);
+
+  bool match(StringRef S) const;
+
+private:
+  std::vector<llvm::GlobPattern> Patterns;
+};
+
+// Returns a demangled C++ symbol name. If Name is not a mangled
+// name, it returns Optional::None.
+llvm::Optional<std::string> demangle(StringRef Name);
+
+inline StringRef toStringRef(ArrayRef<uint8_t> Arr) {
+  return {(const char *)Arr.data(), Arr.size()};
+}
+}
+}
+
+#endif