1 //===- MCSymbolXCOFF.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 #ifndef LLVM_MC_MCSYMBOLXCOFF_H
9 #define LLVM_MC_MCSYMBOLXCOFF_H
10 
11 #include "llvm/ADT/StringRef.h"
12 #include "llvm/BinaryFormat/XCOFF.h"
13 #include "llvm/MC/MCSymbol.h"
14 
15 namespace llvm {
16 
17 class MCSectionXCOFF;
18 
19 class MCSymbolXCOFF : public MCSymbol {
20 
21   enum XCOFFSymbolFlags : uint16_t { SF_EHInfo = 0x0001 };
22 
23 public:
MCSymbolXCOFF(const StringMapEntry<bool> * Name,bool isTemporary)24   MCSymbolXCOFF(const StringMapEntry<bool> *Name, bool isTemporary)
25       : MCSymbol(SymbolKindXCOFF, Name, isTemporary) {}
26 
classof(const MCSymbol * S)27   static bool classof(const MCSymbol *S) { return S->isXCOFF(); }
28 
getUnqualifiedName(StringRef Name)29   static StringRef getUnqualifiedName(StringRef Name) {
30     if (Name.back() == ']') {
31       StringRef Lhs, Rhs;
32       std::tie(Lhs, Rhs) = Name.rsplit('[');
33       assert(!Rhs.empty() && "Invalid SMC format in XCOFF symbol.");
34       return Lhs;
35     }
36     return Name;
37   }
38 
setStorageClass(XCOFF::StorageClass SC)39   void setStorageClass(XCOFF::StorageClass SC) {
40     StorageClass = SC;
41   };
42 
getStorageClass()43   XCOFF::StorageClass getStorageClass() const {
44     assert(StorageClass && "StorageClass not set on XCOFF MCSymbol.");
45     return *StorageClass;
46   }
47 
getUnqualifiedName()48   StringRef getUnqualifiedName() const { return getUnqualifiedName(getName()); }
49 
50   MCSectionXCOFF *getRepresentedCsect() const;
51 
52   void setRepresentedCsect(MCSectionXCOFF *C);
53 
setVisibilityType(XCOFF::VisibilityType SVT)54   void setVisibilityType(XCOFF::VisibilityType SVT) { VisibilityType = SVT; };
55 
getVisibilityType()56   XCOFF::VisibilityType getVisibilityType() const { return VisibilityType; }
57 
hasRename()58   bool hasRename() const { return HasRename; }
59 
setSymbolTableName(StringRef STN)60   void setSymbolTableName(StringRef STN) {
61     SymbolTableName = STN;
62     HasRename = true;
63   }
64 
getSymbolTableName()65   StringRef getSymbolTableName() const {
66     if (hasRename())
67       return SymbolTableName;
68     return getUnqualifiedName();
69   }
70 
isEHInfo()71   bool isEHInfo() const { return getFlags() & SF_EHInfo; }
72 
setEHInfo()73   void setEHInfo() const { modifyFlags(SF_EHInfo, SF_EHInfo); }
74 
75 private:
76   std::optional<XCOFF::StorageClass> StorageClass;
77   MCSectionXCOFF *RepresentedCsect = nullptr;
78   XCOFF::VisibilityType VisibilityType = XCOFF::SYM_V_UNSPECIFIED;
79   StringRef SymbolTableName;
80   bool HasRename = false;
81 };
82 
83 } // end namespace llvm
84 
85 #endif // LLVM_MC_MCSYMBOLXCOFF_H
86