MCMachOSymbolFlags.h revision be3cf5f3e449ea54785ab49d9f01543b710a5125 
1//===- MCMachOSymbolFlags.h - MachO Symbol Flags ----------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file declares the SymbolFlags used for the MachO target.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_MC_MCMACHOSYMBOLFLAGS_H
15#define LLVM_MC_MCMACHOSYMBOLFLAGS_H
16
17// These flags are mostly used in MCMachOStreamer.cpp but also needed in
18// MachObjectWriter.cpp to test for Weak Definitions of symbols to emit
19// the correct relocation information.
20
21namespace llvm {
22  /// MachOSymbolFlags - We store the value for the 'desc' symbol field in the
23  /// lowest 16 bits of the implementation defined flags.
24  enum MachOSymbolFlags { // See <mach-o/nlist.h>.
25    SF_DescFlagsMask                        = 0xFFFF,
26
27    // Reference type flags.
28    SF_ReferenceTypeMask                    = 0x0007,
29    SF_ReferenceTypeUndefinedNonLazy        = 0x0000,
30    SF_ReferenceTypeUndefinedLazy           = 0x0001,
31    SF_ReferenceTypeDefined                 = 0x0002,
32    SF_ReferenceTypePrivateDefined          = 0x0003,
33    SF_ReferenceTypePrivateUndefinedNonLazy = 0x0004,
34    SF_ReferenceTypePrivateUndefinedLazy    = 0x0005,
35
36    // Other 'desc' flags.
37    SF_ThumbFunc                            = 0x0008,
38    SF_NoDeadStrip                          = 0x0020,
39    SF_WeakReference                        = 0x0040,
40    SF_WeakDefinition                       = 0x0080,
41    SF_SymbolResolver                       = 0x0100
42  };
43
44} // end namespace llvm
45
46#endif
47