Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 68 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/TextAPI/ELF/ELFStub.h b/clang-r353983/include/llvm/TextAPI/ELF/ELFStub.h
new file mode 100644
index 00000000..76b2af12
--- /dev/null
+++ b/clang-r353983/include/llvm/TextAPI/ELF/ELFStub.h
@@ -0,0 +1,68 @@
+//===- ELFStub.h ------------------------------------------------*- C++ -*-===//
+//
+// 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
+//
+//===-----------------------------------------------------------------------===/
+///
+/// \file
+/// This file defines an internal representation of an ELF stub.
+///
+//===-----------------------------------------------------------------------===/
+
+#ifndef LLVM_TEXTAPI_ELF_ELFSTUB_H
+#define LLVM_TEXTAPI_ELF_ELFSTUB_H
+
+#include "llvm/BinaryFormat/ELF.h"
+#include "llvm/Support/VersionTuple.h"
+#include <vector>
+#include <set>
+
+namespace llvm {
+namespace elfabi {
+
+typedef uint16_t ELFArch;
+
+enum class ELFSymbolType {
+  NoType = ELF::STT_NOTYPE,
+  Object = ELF::STT_OBJECT,
+  Func = ELF::STT_FUNC,
+  TLS = ELF::STT_TLS,
+
+  // Type information is 4 bits, so 16 is safely out of range.
+  Unknown = 16,
+};
+
+struct ELFSymbol {
+  ELFSymbol(std::string SymbolName) : Name(SymbolName) {}
+  std::string Name;
+  uint64_t Size;
+  ELFSymbolType Type;
+  bool Undefined;
+  bool Weak;
+  Optional<std::string> Warning;
+  bool operator<(const ELFSymbol &RHS) const {
+    return Name < RHS.Name;
+  }
+};
+
+// A cumulative representation of ELF stubs.
+// Both textual and binary stubs will read into and write from this object.
+class ELFStub {
+// TODO: Add support for symbol versioning.
+public:
+  VersionTuple TbeVersion;
+  Optional<std::string> SoName;
+  ELFArch Arch;
+  std::vector<std::string> NeededLibs;
+  std::set<ELFSymbol> Symbols;
+
+  ELFStub() {}
+  ELFStub(const ELFStub &Stub);
+  ELFStub(ELFStub &&Stub);
+};
+} // end namespace elfabi
+} // end namespace llvm
+
+#endif // LLVM_TEXTAPI_ELF_ELFSTUB_H