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
+/// \brief Base class for the full range of assembler expressions which are
/// needed for parsing.
class MCExpr {
public:
private:
ExprKind Kind;
- MCExpr(const MCExpr&) LLVM_DELETED_FUNCTION;
- void operator=(const MCExpr&) LLVM_DELETED_FUNCTION;
+ 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) {}
+ explicit MCExpr(ExprKind Kind) : Kind(Kind) {}
bool EvaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm,
const MCAsmLayout *Layout,
- const SectionAddrMap *Addrs,
- bool InSet) const;
+ const MCFixup *Fixup,
+ const SectionAddrMap *Addrs, bool InSet) const;
+
public:
- /// @name Accessors
+ /// \name Accessors
/// @{
ExprKind getKind() const { return Kind; }
/// @}
- /// @name Utility Methods
+ /// \name Utility Methods
/// @{
void print(raw_ostream &OS) const;
void dump() const;
/// @}
- /// @name Expression Evaluation
+ /// \name Expression Evaluation
/// @{
- /// EvaluateAsAbsolute - Try to evaluate the expression to an absolute value.
+ /// \brief 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
+ /// \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.
+ /// \return - 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).
+ bool evaluateKnownAbsolute(int64_t &Res, const MCAsmLayout &Layout) const;
+
+ /// \brief 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 MCAsmLayout *Layout) const;
+ /// \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.
+ /// \return - True on success.
+ 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 .size directive.
+ bool evaluateAsValue(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
+ /// \brief 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;
+ MCSection *FindAssociatedSection() const;
/// @}
};
return OS;
}
-//// MCConstantExpr - Represent a constant integer expression.
+//// \brief Represent a constant integer expression.
class MCConstantExpr : public MCExpr {
int64_t Value;
- explicit MCConstantExpr(int64_t _Value)
- : MCExpr(MCExpr::Constant), Value(_Value) {}
+ explicit MCConstantExpr(int64_t Value)
+ : MCExpr(MCExpr::Constant), Value(Value) {}
public:
- /// @name Construction
+ /// \name Construction
/// @{
static const MCConstantExpr *Create(int64_t Value, MCContext &Ctx);
/// @}
- /// @name Accessors
+ /// \name Accessors
/// @{
int64_t getValue() const { return Value; }
}
};
-/// MCSymbolRefExpr - Represent a reference to a symbol from inside an
-/// expression.
+/// \brief Represent a reference to a symbol from inside an expression.
///
/// A symbol reference in an expression may be a use of a label, a use of an
/// assembler variable (defined constant), or constitute an implicit definition
/// of the symbol as external.
class MCSymbolRefExpr : public MCExpr {
public:
- enum VariantKind {
+ enum VariantKind : uint16_t {
VK_None,
VK_Invalid,
VK_TLSLDM,
VK_TPOFF,
VK_DTPOFF,
- VK_TLVP, // Mach-O thread local variable relocation
+ VK_TLVP, // Mach-O thread local variable relocations
+ VK_TLVPPAGE,
+ VK_TLVPPAGEOFF,
+ VK_PAGE,
+ VK_PAGEOFF,
+ VK_GOTPAGE,
+ VK_GOTPAGEOFF,
VK_SECREL,
+ VK_SIZE, // symbol@SIZE
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_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_GOT_LO16,
VK_Mips_CALL_HI16,
VK_Mips_CALL_LO16,
-
- VK_COFF_IMGREL32 // symbol@imgrel (image-relative)
+ VK_Mips_PCREL_HI16,
+ VK_Mips_PCREL_LO16,
+
+ VK_COFF_IMGREL32, // symbol@imgrel (image-relative)
+
+ VK_Hexagon_PCREL,
+ VK_Hexagon_LO16,
+ VK_Hexagon_HI16,
+ VK_Hexagon_GPREL,
+ VK_Hexagon_GD_GOT,
+ VK_Hexagon_LD_GOT,
+ VK_Hexagon_GD_PLT,
+ VK_Hexagon_LD_PLT,
+ VK_Hexagon_IE,
+ VK_Hexagon_IE_GOT,
+ VK_TPREL,
+ VK_DTPREL
};
private:
- /// The symbol being referenced.
- const MCSymbol *Symbol;
-
/// The symbol reference modifier.
const VariantKind Kind;
- /// 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
+ /// \name Construction
/// @{
static const MCSymbolRefExpr *Create(const MCSymbol *Symbol, MCContext &Ctx) {
MCContext &Ctx);
/// @}
- /// @name Accessors
+ /// \name Accessors
/// @{
const MCSymbol &getSymbol() const { return *Symbol; }
- const MCAsmInfo &getMCAsmInfo() const { return *MAI; }
VariantKind getKind() const { return Kind; }
+ void printVariantKind(raw_ostream &OS) const;
+
+ bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; }
+
/// @}
- /// @name Static Utility Functions
+ /// \name Static Utility Functions
/// @{
static StringRef getVariantKindName(VariantKind Kind);
}
};
-/// MCUnaryExpr - Unary assembler expressions.
+/// \brief Unary assembler expressions.
class MCUnaryExpr : public MCExpr {
public:
enum Opcode {
Opcode Op;
const MCExpr *Expr;
- MCUnaryExpr(Opcode _Op, const MCExpr *_Expr)
- : MCExpr(MCExpr::Unary), Op(_Op), Expr(_Expr) {}
+ MCUnaryExpr(Opcode Op, const MCExpr *Expr)
+ : MCExpr(MCExpr::Unary), Op(Op), Expr(Expr) {}
public:
- /// @name Construction
+ /// \name Construction
/// @{
static const MCUnaryExpr *Create(Opcode Op, const MCExpr *Expr,
}
/// @}
- /// @name Accessors
+ /// \name Accessors
/// @{
- /// getOpcode - Get the kind of this unary expression.
+ /// \brief Get the kind of this unary expression.
Opcode getOpcode() const { return Op; }
- /// getSubExpr - Get the child of this unary expression.
+ /// \brief Get the child of this unary expression.
const MCExpr *getSubExpr() const { return Expr; }
/// @}
}
};
-/// MCBinaryExpr - Binary assembler expressions.
+/// \brief Binary assembler expressions.
class MCBinaryExpr : public MCExpr {
public:
enum Opcode {
NE, ///< Inequality comparison.
Or, ///< Bitwise or.
Shl, ///< Shift left.
- Shr, ///< Shift right (arithmetic or logical, depending on target)
+ AShr, ///< Arithmetic shift right.
+ LShr, ///< Logical shift right.
Sub, ///< Subtraction.
Xor ///< Bitwise exclusive or.
};
Opcode Op;
const MCExpr *LHS, *RHS;
- MCBinaryExpr(Opcode _Op, const MCExpr *_LHS, const MCExpr *_RHS)
- : MCExpr(MCExpr::Binary), Op(_Op), LHS(_LHS), RHS(_RHS) {}
+ MCBinaryExpr(Opcode Op, const MCExpr *LHS, const MCExpr *RHS)
+ : MCExpr(MCExpr::Binary), Op(Op), LHS(LHS), RHS(RHS) {}
public:
- /// @name Construction
+ /// \name Construction
/// @{
static const MCBinaryExpr *Create(Opcode Op, const MCExpr *LHS,
MCContext &Ctx) {
return Create(Shl, LHS, RHS, Ctx);
}
- static const MCBinaryExpr *CreateShr(const MCExpr *LHS, const MCExpr *RHS,
+ static const MCBinaryExpr *CreateAShr(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(AShr, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateLShr(const MCExpr *LHS, const MCExpr *RHS,
MCContext &Ctx) {
- return Create(Shr, LHS, RHS, Ctx);
+ return Create(LShr, LHS, RHS, Ctx);
}
static const MCBinaryExpr *CreateSub(const MCExpr *LHS, const MCExpr *RHS,
MCContext &Ctx) {
}
/// @}
- /// @name Accessors
+ /// \name Accessors
/// @{
- /// getOpcode - Get the kind of this binary expression.
+ /// \brief Get the kind of this binary expression.
Opcode getOpcode() const { return Op; }
- /// getLHS - Get the left-hand side expression of the binary operator.
+ /// \brief Get the left-hand side expression of the binary operator.
const MCExpr *getLHS() const { return LHS; }
- /// getRHS - Get the right-hand side expression of the binary operator.
+ /// \brief Get the right-hand side expression of the binary operator.
const MCExpr *getRHS() const { return RHS; }
/// @}
}
};
-/// MCTargetExpr - This is an extension point for target-specific MCExpr
-/// subclasses to implement.
+/// \brief This is an extension point for target-specific MCExpr subclasses to
+/// implement.
///
/// NOTE: All subclasses are required to have trivial destructors because
/// MCExprs are bump pointer allocated and not destructed.
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;
+ const MCAsmLayout *Layout,
+ const MCFixup *Fixup) const = 0;
+ virtual void visitUsedExpr(MCStreamer& Streamer) const = 0;
+ virtual MCSection *FindAssociatedSection() const = 0;
virtual void fixELFSymbolsInTLSFixups(MCAssembler &) const = 0;
projects / oota-llvm.git / blobdiff