MCFixupKindInfo.h revision 360784 
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
12namespace llvm {
13
14/// Target independent information on a fixup kind.
15struct 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