X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FMC%2FMCExpr.h;h=4c10e5114a3c8d4d081bc25735b61e8e6be77047;hb=96d58e64cfe88356f8be4ce622b829fbd9fb5908;hp=e1f27f156cb34f567a7ddff4b533a64a51f35820;hpb=a264f72d3fb9dec1427480fcf17ef3c746ea723a;p=oota-llvm.git diff --git a/include/llvm/MC/MCExpr.h b/include/llvm/MC/MCExpr.h index e1f27f156cb..4c10e5114a3 100644 --- a/include/llvm/MC/MCExpr.h +++ b/include/llvm/MC/MCExpr.h @@ -10,17 +10,21 @@ #ifndef LLVM_MC_MCEXPR_H #define LLVM_MC_MCEXPR_H +#include "llvm/ADT/DenseMap.h" #include "llvm/Support/Casting.h" -#include "llvm/System/DataTypes.h" +#include "llvm/Support/DataTypes.h" namespace llvm { -class MCAsmInfo; class MCAsmLayout; +class MCAssembler; class MCContext; +class MCSection; +class MCSectionData; class MCSymbol; class MCValue; class raw_ostream; class StringRef; +typedef DenseMap SectionAddrMap; /// MCExpr - Base class for the full range of assembler expressions which are /// needed for parsing. @@ -37,13 +41,18 @@ public: private: ExprKind Kind; - MCExpr(const MCExpr&); // DO NOT IMPLEMENT - void operator=(const MCExpr&); // DO NOT IMPLEMENT + MCExpr(const MCExpr&) LLVM_DELETED_FUNCTION; + void operator=(const MCExpr&) LLVM_DELETED_FUNCTION; + bool EvaluateAsAbsolute(int64_t &Res, const MCAssembler *Asm, + const MCAsmLayout *Layout, + const SectionAddrMap *Addrs) const; protected: explicit MCExpr(ExprKind _Kind) : Kind(_Kind) {} - bool EvaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout, + bool EvaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm, + const MCAsmLayout *Layout, + const SectionAddrMap *Addrs, bool InSet) const; public: /// @name Accessors @@ -69,7 +78,11 @@ public: /// values. If not given, then only non-symbolic expressions will be /// evaluated. /// @result - True on success. - bool EvaluateAsAbsolute(int64_t &Res, const MCAsmLayout *Layout = 0) const; + bool EvaluateAsAbsolute(int64_t &Res, const MCAsmLayout &Layout, + const SectionAddrMap &Addrs) const; + bool EvaluateAsAbsolute(int64_t &Res) const; + bool EvaluateAsAbsolute(int64_t &Res, const MCAssembler &Asm) const; + bool EvaluateAsAbsolute(int64_t &Res, 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). @@ -77,11 +90,15 @@ public: /// @param Res - The relocatable value, if evaluation succeeds. /// @param Layout - The assembler layout object to use for evaluating values. /// @result - True on success. - bool EvaluateAsRelocatable(MCValue &Res, const MCAsmLayout *Layout = 0) const; + bool EvaluateAsRelocatable(MCValue &Res, const MCAsmLayout &Layout) const; - /// @} + /// FindAssociatedSection - Find the "associated section" for this expression, + /// which is currently defined as the absolute section for constants, or + /// otherwise the section associated with the first defined symbol in the + /// expression. + const MCSection *FindAssociatedSection() const; - static bool classof(const MCExpr *) { return true; } + /// @} }; inline raw_ostream &operator<<(raw_ostream &OS, const MCExpr &E) { @@ -113,7 +130,6 @@ public: static bool classof(const MCExpr *E) { return E->getKind() == MCExpr::Constant; } - static bool classof(const MCConstantExpr *) { return true; } }; /// MCSymbolRefExpr - Represent a reference to a symbol from inside an @@ -137,12 +153,50 @@ public: VK_GOTNTPOFF, VK_PLT, VK_TLSGD, + VK_TLSLD, VK_TLSLDM, VK_TPOFF, - VK_ARM_HI16, // The R_ARM_MOVT_ABS relocation (:upper16: in the asm file) - VK_ARM_LO16, // The R_ARM_MOVW_ABS_NC relocation (:lower16: in the asm file) - VK_ARM_PLT, // ARM-style PLT symbol references. i.e., (PLT) instead of @PLT - VK_TLVP // Mach-O thread local variable relocation + VK_DTPOFF, + VK_TLVP, // Mach-O thread local variable relocation + VK_SECREL, + // FIXME: We'd really like to use the generic Kinds listed above for these. + VK_ARM_PLT, // ARM-style PLT references. i.e., (PLT) instead of @PLT + VK_ARM_TLSGD, // ditto for TLSGD, GOT, GOTOFF, TPOFF and GOTTPOFF + VK_ARM_GOT, + VK_ARM_GOTOFF, + VK_ARM_TPOFF, + VK_ARM_GOTTPOFF, + VK_ARM_TARGET1, + + VK_PPC_TOC, // TOC base + VK_PPC_TOC_ENTRY, // TOC entry + VK_PPC_DARWIN_HA16, // ha16(symbol) + VK_PPC_DARWIN_LO16, // lo16(symbol) + VK_PPC_GAS_HA16, // symbol@ha + VK_PPC_GAS_LO16, // symbol@l + VK_PPC_TPREL16_HA, // symbol@tprel@ha + VK_PPC_TPREL16_LO, // symbol@tprel@l + + VK_Mips_GPREL, + VK_Mips_GOT_CALL, + VK_Mips_GOT16, + VK_Mips_GOT, + VK_Mips_ABS_HI, + VK_Mips_ABS_LO, + VK_Mips_TLSGD, + VK_Mips_TLSLDM, + VK_Mips_DTPREL_HI, + VK_Mips_DTPREL_LO, + VK_Mips_GOTTPREL, + VK_Mips_TPREL_HI, + VK_Mips_TPREL_LO, + VK_Mips_GPOFF_HI, + VK_Mips_GPOFF_LO, + VK_Mips_GOT_DISP, + VK_Mips_GOT_PAGE, + VK_Mips_GOT_OFST, + VK_Mips_HIGHER, + VK_Mips_HIGHEST }; private: @@ -153,7 +207,9 @@ private: const VariantKind Kind; explicit MCSymbolRefExpr(const MCSymbol *_Symbol, VariantKind _Kind) - : MCExpr(MCExpr::SymbolRef), Symbol(_Symbol), Kind(_Kind) {} + : MCExpr(MCExpr::SymbolRef), Symbol(_Symbol), Kind(_Kind) { + assert(Symbol); + } public: /// @name Construction @@ -167,7 +223,7 @@ public: MCContext &Ctx); static const MCSymbolRefExpr *Create(StringRef Name, VariantKind Kind, MCContext &Ctx); - + /// @} /// @name Accessors /// @{ @@ -189,7 +245,6 @@ public: static bool classof(const MCExpr *E) { return E->getKind() == MCExpr::SymbolRef; } - static bool classof(const MCSymbolRefExpr *) { return true; } }; /// MCUnaryExpr - Unary assembler expressions. @@ -243,7 +298,6 @@ public: static bool classof(const MCExpr *E) { return E->getKind() == MCExpr::Unary; } - static bool classof(const MCUnaryExpr *) { return true; } }; /// MCBinaryExpr - Binary assembler expressions. @@ -378,7 +432,6 @@ public: static bool classof(const MCExpr *E) { return E->getKind() == MCExpr::Binary; } - static bool classof(const MCBinaryExpr *) { return true; } }; /// MCTargetExpr - This is an extension point for target-specific MCExpr @@ -387,7 +440,7 @@ public: /// NOTE: All subclasses are required to have trivial destructors because /// MCExprs are bump pointer allocated and not destructed. class MCTargetExpr : public MCExpr { - virtual void Anchor(); + virtual void anchor(); protected: MCTargetExpr() : MCExpr(Target) {} virtual ~MCTargetExpr() {} @@ -396,12 +449,12 @@ public: virtual void PrintImpl(raw_ostream &OS) const = 0; virtual bool EvaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout) const = 0; - + virtual void AddValueSymbols(MCAssembler *) const = 0; + virtual const MCSection *FindAssociatedSection() const = 0; static bool classof(const MCExpr *E) { return E->getKind() == MCExpr::Target; } - static bool classof(const MCTargetExpr *) { return true; } }; } // end namespace llvm