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  1. //===- IFSHandler.h ---------------------------------------------*- C++ -*-===//
  2. //
  3. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  4. // See https://llvm.org/LICENSE.txt for license information.
  5. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  6. //
  7. //===-----------------------------------------------------------------------===/
  8. ///
  9. /// \file
  10. /// This file declares an interface for reading and writing .ifs (text-based
  11. /// InterFace Stub) files.
  12. ///
  13. //===-----------------------------------------------------------------------===/
  14.  
  15. #ifndef LLVM_INTERFACESTUB_IFSHANDLER_H
  16. #define LLVM_INTERFACESTUB_IFSHANDLER_H
  17.  
  18. #include "IFSStub.h"
  19. #include "llvm/Support/Error.h"
  20. #include "llvm/Support/VersionTuple.h"
  21. #include <memory>
  22. #include <optional>
  23. #include <string>
  24. #include <vector>
  25.  
  26. namespace llvm {
  27.  
  28. class raw_ostream;
  29. class Error;
  30. class StringRef;
  31.  
  32. namespace ifs {
  33.  
  34. struct IFSStub;
  35.  
  36. const VersionTuple IFSVersionCurrent(3, 0);
  37.  
  38. /// Attempts to read an IFS interface file from a StringRef buffer.
  39. Expected<std::unique_ptr<IFSStub>> readIFSFromBuffer(StringRef Buf);
  40.  
  41. /// Attempts to write an IFS interface file to a raw_ostream.
  42. Error writeIFSToOutputStream(raw_ostream &OS, const IFSStub &Stub);
  43.  
  44. /// Override the target platform inforation in the text stub.
  45. Error overrideIFSTarget(IFSStub &Stub, std::optional<IFSArch> OverrideArch,
  46.                         std::optional<IFSEndiannessType> OverrideEndianness,
  47.                         std::optional<IFSBitWidthType> OverrideBitWidth,
  48.                         std::optional<std::string> OverrideTriple);
  49.  
  50. /// Validate the target platform inforation in the text stub.
  51. Error validateIFSTarget(IFSStub &Stub, bool ParseTriple);
  52.  
  53. /// Strips target platform information from the text stub.
  54. void stripIFSTarget(IFSStub &Stub, bool StripTriple, bool StripArch,
  55.                     bool StripEndianness, bool StripBitWidth);
  56.  
  57. Error filterIFSSyms(IFSStub &Stub, bool StripUndefined,
  58.                     const std::vector<std::string> &Exclude = {});
  59.  
  60. /// Parse llvm triple string into a IFSTarget struct.
  61. IFSTarget parseTriple(StringRef TripleStr);
  62.  
  63. } // end namespace ifs
  64. } // end namespace llvm
  65.  
  66. #endif // LLVM_INTERFACESTUB_IFSHANDLER_H
  67.