diff options
Diffstat (limited to 'include/llvm/MC/MCExpr.h')
-rw-r--r-- | include/llvm/MC/MCExpr.h | 50 |
1 files changed, 33 insertions, 17 deletions
diff --git a/include/llvm/MC/MCExpr.h b/include/llvm/MC/MCExpr.h index e96ecb4..f0e8611 100644 --- a/include/llvm/MC/MCExpr.h +++ b/include/llvm/MC/MCExpr.h @@ -19,6 +19,7 @@ class MCAsmInfo; class MCAsmLayout; class MCAssembler; class MCContext; +class MCFixup; class MCSection; class MCSectionData; class MCStreamer; @@ -49,11 +50,17 @@ private: bool EvaluateAsAbsolute(int64_t &Res, const MCAssembler *Asm, const MCAsmLayout *Layout, const SectionAddrMap *Addrs) const; + + bool evaluateAsAbsolute(int64_t &Res, const MCAssembler *Asm, + const MCAsmLayout *Layout, + const SectionAddrMap *Addrs, bool InSet) const; + protected: explicit MCExpr(ExprKind _Kind) : Kind(_Kind) {} bool EvaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm, const MCAsmLayout *Layout, + const MCFixup *Fixup, const SectionAddrMap *Addrs, bool InSet, bool ForceVarExpansion) const; @@ -87,13 +94,17 @@ public: bool EvaluateAsAbsolute(int64_t &Res, const MCAssembler &Asm) const; bool EvaluateAsAbsolute(int64_t &Res, const MCAsmLayout &Layout) const; + int64_t evaluateKnownAbsolute(const MCAsmLayout &Layout) const; + /// EvaluateAsRelocatable - Try to evaluate the expression to a relocatable /// value, i.e. an expression of the fixed form (a - b + constant). /// /// @param Res - The relocatable value, if evaluation succeeds. /// @param Layout - The assembler layout object to use for evaluating values. + /// @param Fixup - The Fixup object if available. /// @result - True on success. - bool EvaluateAsRelocatable(MCValue &Res, const MCAsmLayout *Layout) const; + bool EvaluateAsRelocatable(MCValue &Res, const MCAsmLayout *Layout, + const MCFixup *Fixup) const; /// \brief Try to evaluate the expression to the form (a - b + constant) where /// neither a nor b are variables. @@ -101,7 +112,8 @@ public: /// This is a more aggressive variant of EvaluateAsRelocatable. The intended /// use is for when relocations are not available, like the symbol value in /// the symbol table. - bool EvaluateAsValue(MCValue &Res, const MCAsmLayout *Layout) const; + bool EvaluateAsValue(MCValue &Res, const MCAsmLayout *Layout, + const MCFixup *Fixup) const; /// FindAssociatedSection - Find the "associated section" for this expression, /// which is currently defined as the absolute section for constants, or @@ -238,6 +250,7 @@ public: VK_PPC_GOT_TLSLD_HI, // symbol@got@tlsld@h VK_PPC_GOT_TLSLD_HA, // symbol@got@tlsld@ha VK_PPC_TLSLD, // symbol@tlsld + VK_PPC_LOCAL, // symbol@local VK_Mips_GPREL, VK_Mips_GOT_CALL, @@ -270,21 +283,20 @@ public: }; private: - /// The symbol being referenced. - const MCSymbol *Symbol; - /// The symbol reference modifier. - const VariantKind Kind; + const unsigned Kind : 16; - /// MCAsmInfo that is used to print symbol variants correctly. - const MCAsmInfo *MAI; + /// Specifies how the variant kind should be printed. + const unsigned UseParensForSymbolVariant : 1; - explicit MCSymbolRefExpr(const MCSymbol *_Symbol, VariantKind _Kind, - const MCAsmInfo *_MAI) - : MCExpr(MCExpr::SymbolRef), Symbol(_Symbol), Kind(_Kind), MAI(_MAI) { - assert(Symbol); - assert(MAI); - } + // FIXME: Remove this bit. + const unsigned HasSubsectionsViaSymbols : 1; + + /// The symbol being referenced. + const MCSymbol *Symbol; + + explicit MCSymbolRefExpr(const MCSymbol *Symbol, VariantKind Kind, + const MCAsmInfo *MAI); public: /// @name Construction @@ -304,9 +316,12 @@ public: /// @{ const MCSymbol &getSymbol() const { return *Symbol; } - const MCAsmInfo &getMCAsmInfo() const { return *MAI; } - VariantKind getKind() const { return Kind; } + VariantKind getKind() const { return static_cast<VariantKind>(Kind); } + + void printVariantKind(raw_ostream &OS) const; + + bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; } /// @} /// @name Static Utility Functions @@ -524,7 +539,8 @@ public: virtual void PrintImpl(raw_ostream &OS) const = 0; virtual bool EvaluateAsRelocatableImpl(MCValue &Res, - const MCAsmLayout *Layout) const = 0; + const MCAsmLayout *Layout, + const MCFixup *Fixup) const = 0; virtual void visitUsedExpr(MCStreamer& Streamer) const = 0; virtual const MCSection *FindAssociatedSection() const = 0; |