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  1. //===-- llvm/MC/MCFixupKindInfo.h - Fixup Descriptors -----------*- 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. #ifndef LLVM_MC_MCFIXUPKINDINFO_H
  10. #define LLVM_MC_MCFIXUPKINDINFO_H
  11.  
  12. namespace llvm {
  13.  
  14. /// Target independent information on a fixup kind.
  15. struct MCFixupKindInfo {
  16.   enum FixupKindFlags {
  17.     /// Is this fixup kind PCrelative? This is used by the assembler backend to
  18.     /// evaluate fixup values in a target independent manner when possible.
  19.     FKF_IsPCRel = (1 << 0),
  20.  
  21.     /// Should this fixup kind force a 4-byte aligned effective PC value?
  22.     FKF_IsAlignedDownTo32Bits = (1 << 1),
  23.  
  24.     /// Should this fixup be evaluated in a target dependent manner?
  25.     FKF_IsTarget = (1 << 2),
  26.  
  27.     /// This fixup kind should be resolved if defined.
  28.     /// FIXME This is a workaround because we don't support certain ARM
  29.     /// relocation types. This flag should eventually be removed.
  30.     FKF_Constant = 1 << 3,
  31.   };
  32.  
  33.   /// A target specific name for the fixup kind. The names will be unique for
  34.   /// distinct kinds on any given target.
  35.   const char *Name;
  36.  
  37.   /// The bit offset to write the relocation into.
  38.   unsigned TargetOffset;
  39.  
  40.   /// The number of bits written by this fixup. The bits are assumed to be
  41.   /// contiguous.
  42.   unsigned TargetSize;
  43.  
  44.   /// Flags describing additional information on this fixup kind.
  45.   unsigned Flags;
  46. };
  47.  
  48. } // End llvm namespace
  49.  
  50. #endif
  51.