#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<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&) 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:
- MCExpr(ExprKind _Kind) : Kind(_Kind) {}
+ explicit MCExpr(ExprKind _Kind) : Kind(_Kind) {}
+ bool EvaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm,
+ const MCAsmLayout *Layout,
+ const SectionAddrMap *Addrs,
+ bool InSet) const;
public:
/// @name Accessors
/// @{
/// EvaluateAsAbsolute - Try to evaluate the expression to an absolute value.
///
/// @param Res - The absolute value, if evaluation succeeds.
+ /// @param Layout - The assembler layout object to use for evaluating symbol
+ /// values. If not given, then only non-symbolic expressions will be
+ /// evaluated.
/// @result - True on success.
+ 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).
///
/// @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;
+ 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) {
E.print(OS);
return OS;
class MCConstantExpr : public MCExpr {
int64_t Value;
- MCConstantExpr(int64_t _Value)
+ explicit MCConstantExpr(int64_t _Value)
: MCExpr(MCExpr::Constant), Value(_Value) {}
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
/// assembler variable (defined constant), or constitute an implicit definition
/// of the symbol as external.
class MCSymbolRefExpr : public MCExpr {
+public:
+ enum VariantKind {
+ VK_None,
+ VK_Invalid,
+
+ VK_GOT,
+ VK_GOTOFF,
+ VK_GOTPCREL,
+ VK_GOTTPOFF,
+ VK_INDNTPOFF,
+ VK_NTPOFF,
+ VK_GOTNTPOFF,
+ VK_PLT,
+ VK_TLSGD,
+ VK_TLSLD,
+ VK_TLSLDM,
+ VK_TPOFF,
+ 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_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_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_COFF_IMGREL32 // symbol@imgrel (image-relative)
+ };
+
+private:
+ /// The symbol being referenced.
const MCSymbol *Symbol;
- MCSymbolRefExpr(const MCSymbol *_Symbol)
- : MCExpr(MCExpr::SymbolRef), Symbol(_Symbol) {}
+ /// The symbol reference modifier.
+ const VariantKind Kind;
+
+ /// MCAsmInfo that is used to print symbol variants correctly.
+ const MCAsmInfo *MAI;
+
+ explicit MCSymbolRefExpr(const MCSymbol *_Symbol, VariantKind _Kind,
+ const MCAsmInfo *_MAI)
+ : MCExpr(MCExpr::SymbolRef), Symbol(_Symbol), Kind(_Kind), MAI(_MAI) {
+ assert(Symbol);
+ assert(MAI);
+ }
public:
/// @name Construction
/// @{
- static const MCSymbolRefExpr *Create(const MCSymbol *Symbol, MCContext &Ctx);
- static const MCSymbolRefExpr *Create(StringRef Name, MCContext &Ctx);
+ static const MCSymbolRefExpr *Create(const MCSymbol *Symbol, MCContext &Ctx) {
+ return MCSymbolRefExpr::Create(Symbol, VK_None, Ctx);
+ }
+
+ static const MCSymbolRefExpr *Create(const MCSymbol *Symbol, VariantKind Kind,
+ MCContext &Ctx);
+ static const MCSymbolRefExpr *Create(StringRef Name, VariantKind Kind,
+ MCContext &Ctx);
/// @}
/// @name Accessors
/// @{
const MCSymbol &getSymbol() const { return *Symbol; }
+ const MCAsmInfo &getMCAsmInfo() const { return *MAI; }
+
+ VariantKind getKind() const { return Kind; }
+
+ /// @}
+ /// @name Static Utility Functions
+ /// @{
+
+ static StringRef getVariantKindName(VariantKind Kind);
+
+ static VariantKind getVariantKindForName(StringRef Name);
/// @}
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.
enum Opcode {
Add, ///< Addition.
And, ///< Bitwise and.
- Div, ///< Division.
+ Div, ///< Signed division.
EQ, ///< Equality comparison.
- GT, ///< Greater than comparison.
- GTE, ///< Greater than or equal comparison.
+ GT, ///< Signed greater than comparison (result is either 0 or some
+ ///< target-specific non-zero value)
+ GTE, ///< Signed greater than or equal comparison (result is either 0 or
+ ///< some target-specific non-zero value).
LAnd, ///< Logical and.
LOr, ///< Logical or.
- LT, ///< Less than comparison.
- LTE, ///< Less than or equal comparison.
- Mod, ///< Modulus.
+ LT, ///< Signed less than comparison (result is either 0 or
+ ///< some target-specific non-zero value).
+ LTE, ///< Signed less than or equal comparison (result is either 0 or
+ ///< some target-specific non-zero value).
+ Mod, ///< Signed remainder.
Mul, ///< Multiplication.
NE, ///< Inequality comparison.
Or, ///< Bitwise or.
- Shl, ///< Bitwise shift left.
- Shr, ///< Bitwise shift right.
+ Shl, ///< Shift left.
+ Shr, ///< Shift right (arithmetic or logical, depending on target)
Sub, ///< Subtraction.
Xor ///< Bitwise exclusive or.
};
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() {}
public:
-
+
virtual void PrintImpl(raw_ostream &OS) const = 0;
- virtual bool EvaluateAsRelocatableImpl(MCValue &Res) const = 0;
+ virtual bool EvaluateAsRelocatableImpl(MCValue &Res,
+ const MCAsmLayout *Layout) const = 0;
+ virtual void AddValueSymbols(MCAssembler *) 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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