#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 MCFixup;
+class MCSection;
+class MCSectionData;
+class MCStreamer;
class MCSymbol;
class MCValue;
class raw_ostream;
class StringRef;
+typedef DenseMap<const MCSectionData*, uint64_t> SectionAddrMap;
/// MCExpr - Base class for the full range of assembler expressions which are
/// needed for parsing.
private:
ExprKind Kind;
- MCExpr(const MCExpr&); // DO NOT IMPLEMENT
- void operator=(const MCExpr&); // DO NOT IMPLEMENT
+ MCExpr(const MCExpr&) = delete;
+ void operator=(const MCExpr&) = delete;
+
+ 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 MCAsmLayout *Layout,
- bool InSet) const;
+ bool EvaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm,
+ const MCAsmLayout *Layout,
+ const MCFixup *Fixup,
+ const SectionAddrMap *Addrs, bool InSet,
+ bool ForceVarExpansion) const;
+
public:
/// @name Accessors
/// @{
/// 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;
+
+ 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 = 0) 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.
+ ///
+ /// 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 MCFixup *Fixup) 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) {
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
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 relocations
+ VK_TLVPPAGE,
+ VK_TLVPPAGEOFF,
+ VK_PAGE,
+ VK_PAGEOFF,
+ VK_GOTPAGE,
+ VK_GOTPAGEOFF,
+ VK_SECREL,
+ VK_WEAKREF, // The link between the symbols in .weakref foo, bar
+
+ VK_ARM_NONE,
+ VK_ARM_TARGET1,
+ VK_ARM_TARGET2,
+ VK_ARM_PREL31,
+ VK_ARM_SBREL, // symbol(sbrel)
+ VK_ARM_TLSLDO, // symbol(tlsldo)
+ VK_ARM_TLSCALL, // symbol(tlscall)
+ VK_ARM_TLSDESC, // symbol(tlsdesc)
+ VK_ARM_TLSDESCSEQ,
+
+ VK_PPC_LO, // symbol@l
+ VK_PPC_HI, // symbol@h
+ VK_PPC_HA, // symbol@ha
+ VK_PPC_HIGHER, // symbol@higher
+ VK_PPC_HIGHERA, // symbol@highera
+ VK_PPC_HIGHEST, // symbol@highest
+ VK_PPC_HIGHESTA, // symbol@highesta
+ VK_PPC_GOT_LO, // symbol@got@l
+ VK_PPC_GOT_HI, // symbol@got@h
+ VK_PPC_GOT_HA, // symbol@got@ha
+ VK_PPC_TOCBASE, // symbol@tocbase
+ VK_PPC_TOC, // symbol@toc
+ VK_PPC_TOC_LO, // symbol@toc@l
+ VK_PPC_TOC_HI, // symbol@toc@h
+ VK_PPC_TOC_HA, // symbol@toc@ha
+ VK_PPC_DTPMOD, // symbol@dtpmod
+ VK_PPC_TPREL, // symbol@tprel
+ VK_PPC_TPREL_LO, // symbol@tprel@l
+ VK_PPC_TPREL_HI, // symbol@tprel@h
+ VK_PPC_TPREL_HA, // symbol@tprel@ha
+ VK_PPC_TPREL_HIGHER, // symbol@tprel@higher
+ VK_PPC_TPREL_HIGHERA, // symbol@tprel@highera
+ VK_PPC_TPREL_HIGHEST, // symbol@tprel@highest
+ VK_PPC_TPREL_HIGHESTA, // symbol@tprel@highesta
+ VK_PPC_DTPREL, // symbol@dtprel
+ VK_PPC_DTPREL_LO, // symbol@dtprel@l
+ VK_PPC_DTPREL_HI, // symbol@dtprel@h
+ VK_PPC_DTPREL_HA, // symbol@dtprel@ha
+ VK_PPC_DTPREL_HIGHER, // symbol@dtprel@higher
+ VK_PPC_DTPREL_HIGHERA, // symbol@dtprel@highera
+ VK_PPC_DTPREL_HIGHEST, // symbol@dtprel@highest
+ VK_PPC_DTPREL_HIGHESTA,// symbol@dtprel@highesta
+ VK_PPC_GOT_TPREL, // symbol@got@tprel
+ VK_PPC_GOT_TPREL_LO, // symbol@got@tprel@l
+ VK_PPC_GOT_TPREL_HI, // symbol@got@tprel@h
+ VK_PPC_GOT_TPREL_HA, // symbol@got@tprel@ha
+ VK_PPC_GOT_DTPREL, // symbol@got@dtprel
+ VK_PPC_GOT_DTPREL_LO, // symbol@got@dtprel@l
+ VK_PPC_GOT_DTPREL_HI, // symbol@got@dtprel@h
+ VK_PPC_GOT_DTPREL_HA, // symbol@got@dtprel@ha
+ VK_PPC_TLS, // symbol@tls
+ VK_PPC_GOT_TLSGD, // symbol@got@tlsgd
+ VK_PPC_GOT_TLSGD_LO, // symbol@got@tlsgd@l
+ VK_PPC_GOT_TLSGD_HI, // symbol@got@tlsgd@h
+ VK_PPC_GOT_TLSGD_HA, // symbol@got@tlsgd@ha
+ VK_PPC_TLSGD, // symbol@tlsgd
+ VK_PPC_GOT_TLSLD, // symbol@got@tlsld
+ VK_PPC_GOT_TLSLD_LO, // symbol@got@tlsld@l
+ 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,
+ 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,
+ VK_Mips_GOT_HI16,
+ VK_Mips_GOT_LO16,
+ VK_Mips_CALL_HI16,
+ VK_Mips_CALL_LO16,
+ VK_Mips_PCREL_HI16,
+ VK_Mips_PCREL_LO16,
+
+ VK_COFF_IMGREL32 // symbol@imgrel (image-relative)
};
private:
+ /// The symbol reference modifier.
+ const unsigned Kind : 16;
+
+ /// Specifies how the variant kind should be printed.
+ const unsigned UseParensForSymbolVariant : 1;
+
+ // FIXME: Remove this bit.
+ const unsigned HasSubsectionsViaSymbols : 1;
+
/// The symbol being referenced.
const MCSymbol *Symbol;
- /// The symbol reference modifier.
- const VariantKind Kind;
-
- explicit MCSymbolRefExpr(const MCSymbol *_Symbol, VariantKind _Kind)
- : MCExpr(MCExpr::SymbolRef), Symbol(_Symbol), Kind(_Kind) {}
+ explicit MCSymbolRefExpr(const MCSymbol *Symbol, VariantKind Kind,
+ const MCAsmInfo *MAI);
public:
/// @name Construction
MCContext &Ctx);
static const MCSymbolRefExpr *Create(StringRef Name, VariantKind Kind,
MCContext &Ctx);
-
+
/// @}
/// @name Accessors
/// @{
const MCSymbol &getSymbol() const { return *Symbol; }
- 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
static bool classof(const MCExpr *E) {
return E->getKind() == MCExpr::SymbolRef;
}
- static bool classof(const MCSymbolRefExpr *) { return true; }
};
/// MCUnaryExpr - Unary assembler expressions.
static bool classof(const MCExpr *E) {
return E->getKind() == MCExpr::Unary;
}
- static bool classof(const MCUnaryExpr *) { return true; }
};
/// MCBinaryExpr - Binary assembler expressions.
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
/// 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() {}
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;
+ virtual void fixELFSymbolsInTLSFixups(MCAssembler &) const = 0;
static bool classof(const MCExpr *E) {
return E->getKind() == MCExpr::Target;
}
- static bool classof(const MCTargetExpr *) { return true; }
};
} // end namespace llvm
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