1 //===- MCSymbolWasm.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_MCSYMBOLWASM_H 9 #define LLVM_MC_MCSYMBOLWASM_H 10 11 #include "llvm/BinaryFormat/Wasm.h" 12 #include "llvm/MC/MCSymbol.h" 13 14 namespace llvm { 15 16 class MCSymbolWasm : public MCSymbol { 17 wasm::WasmSymbolType Type = wasm::WASM_SYMBOL_TYPE_DATA; 18 bool IsWeak = false; 19 bool IsHidden = false; 20 bool IsComdat = false; 21 mutable bool IsUsedInGOT = false; 22 Optional<std::string> ImportModule; 23 Optional<std::string> ImportName; 24 wasm::WasmSignature *Signature = nullptr; 25 Optional<wasm::WasmGlobalType> GlobalType; 26 Optional<wasm::WasmEventType> EventType; 27 28 /// An expression describing how to calculate the size of a symbol. If a 29 /// symbol has no size this field will be NULL. 30 const MCExpr *SymbolSize = nullptr; 31 32 public: 33 // Use a module name of "env" for now, for compatibility with existing tools. 34 // This is temporary, and may change, as the ABI is not yet stable. 35 MCSymbolWasm(const StringMapEntry<bool> *Name, bool isTemporary) 36 : MCSymbol(SymbolKindWasm, Name, isTemporary) {} 37 static bool classof(const MCSymbol *S) { return S->isWasm(); } 38 39 const MCExpr *getSize() const { return SymbolSize; } 40 void setSize(const MCExpr *SS) { SymbolSize = SS; } 41 42 bool isFunction() const { return Type == wasm::WASM_SYMBOL_TYPE_FUNCTION; } 43 bool isData() const { return Type == wasm::WASM_SYMBOL_TYPE_DATA; } 44 bool isGlobal() const { return Type == wasm::WASM_SYMBOL_TYPE_GLOBAL; } 45 bool isSection() const { return Type == wasm::WASM_SYMBOL_TYPE_SECTION; } 46 bool isEvent() const { return Type == wasm::WASM_SYMBOL_TYPE_EVENT; } 47 wasm::WasmSymbolType getType() const { return Type; } 48 void setType(wasm::WasmSymbolType type) { Type = type; } 49 50 bool isExported() const { 51 return getFlags() & wasm::WASM_SYMBOL_EXPORTED; 52 } 53 void setExported() const { 54 modifyFlags(wasm::WASM_SYMBOL_EXPORTED, wasm::WASM_SYMBOL_EXPORTED); 55 } 56 57 bool isNoStrip() const { 58 return getFlags() & wasm::WASM_SYMBOL_NO_STRIP; 59 } 60 void setNoStrip() const { 61 modifyFlags(wasm::WASM_SYMBOL_NO_STRIP, wasm::WASM_SYMBOL_NO_STRIP); 62 } 63 64 bool isWeak() const { return IsWeak; } 65 void setWeak(bool isWeak) { IsWeak = isWeak; } 66 67 bool isHidden() const { return IsHidden; } 68 void setHidden(bool isHidden) { IsHidden = isHidden; } 69 70 bool isComdat() const { return IsComdat; } 71 void setComdat(bool isComdat) { IsComdat = isComdat; } 72 73 const StringRef getImportModule() const { 74 if (ImportModule.hasValue()) { 75 return ImportModule.getValue(); 76 } 77 return "env"; 78 } 79 void setImportModule(StringRef Name) { ImportModule = Name; } 80 81 const StringRef getImportName() const { 82 if (ImportName.hasValue()) { 83 return ImportName.getValue(); 84 } 85 return getName(); 86 } 87 void setImportName(StringRef Name) { ImportName = Name; } 88 89 void setUsedInGOT() const { IsUsedInGOT = true; } 90 bool isUsedInGOT() const { return IsUsedInGOT; } 91 92 const wasm::WasmSignature *getSignature() const { return Signature; } 93 void setSignature(wasm::WasmSignature *Sig) { Signature = Sig; } 94 95 const wasm::WasmGlobalType &getGlobalType() const { 96 assert(GlobalType.hasValue()); 97 return GlobalType.getValue(); 98 } 99 void setGlobalType(wasm::WasmGlobalType GT) { GlobalType = GT; } 100 101 const wasm::WasmEventType &getEventType() const { 102 assert(EventType.hasValue()); 103 return EventType.getValue(); 104 } 105 void setEventType(wasm::WasmEventType ET) { EventType = ET; } 106 }; 107 108 } // end namespace llvm 109 110 #endif // LLVM_MC_MCSYMBOLWASM_H 111