LLVM  9.0.0svn
MCSymbolCOFF.h
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1 //===- MCSymbolCOFF.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 #ifndef LLVM_MC_MCSYMBOLCOFF_H
10 #define LLVM_MC_MCSYMBOLCOFF_H
11 
12 #include "llvm/MC/MCSymbol.h"
13 #include <cstdint>
14 
15 namespace llvm {
16 
17 class MCSymbolCOFF : public MCSymbol {
18  /// This corresponds to the e_type field of the COFF symbol.
19  mutable uint16_t Type = 0;
20 
21  enum SymbolFlags : uint16_t {
22  SF_ClassMask = 0x00FF,
23  SF_ClassShift = 0,
24 
25  SF_WeakExternal = 0x0100,
26  SF_SafeSEH = 0x0200,
27  };
28 
29 public:
31  : MCSymbol(SymbolKindCOFF, Name, isTemporary) {}
32 
33  uint16_t getType() const {
34  return Type;
35  }
36  void setType(uint16_t Ty) const {
37  Type = Ty;
38  }
39 
40  uint16_t getClass() const {
41  return (getFlags() & SF_ClassMask) >> SF_ClassShift;
42  }
43  void setClass(uint16_t StorageClass) const {
44  modifyFlags(StorageClass << SF_ClassShift, SF_ClassMask);
45  }
46 
47  bool isWeakExternal() const {
48  return getFlags() & SF_WeakExternal;
49  }
50  void setIsWeakExternal() const {
51  modifyFlags(SF_WeakExternal, SF_WeakExternal);
52  }
53 
54  bool isSafeSEH() const {
55  return getFlags() & SF_SafeSEH;
56  }
57  void setIsSafeSEH() const {
58  modifyFlags(SF_SafeSEH, SF_SafeSEH);
59  }
60 
61  static bool classof(const MCSymbol *S) { return S->isCOFF(); }
62 };
63 
64 } // end namespace llvm
65 
66 #endif // LLVM_MC_MCSYMBOLCOFF_H
bool isCOFF() const
Definition: MCSymbol.h:282
This class represents lattice values for constants.
Definition: AllocatorList.h:23
StringMapEntry - This is used to represent one value that is inserted into a StringMap.
Definition: StringMap.h:125
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Definition: MCSymbol.h:41
amdgpu Simplify well known AMD library false FunctionCallee Value const Twine & Name
void setIsWeakExternal() const
Definition: MCSymbolCOFF.h:50
MCSymbolCOFF(const StringMapEntry< bool > *Name, bool isTemporary)
Definition: MCSymbolCOFF.h:30
COFF::SymbolStorageClass StorageClass
Definition: COFFYAML.cpp:356
void setClass(uint16_t StorageClass) const
Definition: MCSymbolCOFF.h:43
The instances of the Type class are immutable: once they are created, they are never changed...
Definition: Type.h:45
bool isWeakExternal() const
Definition: MCSymbolCOFF.h:47
bool isTemporary() const
isTemporary - Check if this is an assembler temporary symbol.
Definition: MCSymbol.h:219
static bool classof(const MCSymbol *S)
Definition: MCSymbolCOFF.h:61
void setIsSafeSEH() const
Definition: MCSymbolCOFF.h:57
void setType(uint16_t Ty) const
Definition: MCSymbolCOFF.h:36
bool isSafeSEH() const
Definition: MCSymbolCOFF.h:54
uint16_t getClass() const
Definition: MCSymbolCOFF.h:40
uint16_t getType() const
Definition: MCSymbolCOFF.h:33
void modifyFlags(uint32_t Value, uint32_t Mask) const
Modify the flags via a mask.
Definition: MCSymbol.h:415
uint32_t getFlags() const
Get the (implementation defined) symbol flags.
Definition: MCSymbol.h:406