diff options
Diffstat (limited to 'include/llvm/Target/TargetLoweringObjectFile.h')
| -rw-r--r-- | include/llvm/Target/TargetLoweringObjectFile.h | 182 |
1 files changed, 11 insertions, 171 deletions
diff --git a/include/llvm/Target/TargetLoweringObjectFile.h b/include/llvm/Target/TargetLoweringObjectFile.h index d3e5cf2..42d88a0 100644 --- a/include/llvm/Target/TargetLoweringObjectFile.h +++ b/include/llvm/Target/TargetLoweringObjectFile.h @@ -25,6 +25,7 @@ namespace llvm { class MCExpr; class MCSection; class MCSectionMachO; + class MCSymbol; class MCContext; class GlobalValue; class TargetMachine; @@ -175,187 +176,26 @@ public: return 0; } - /// getSymbolForDwarfGlobalReference - Return an MCExpr to use for a - /// pc-relative reference to the specified global variable from exception - /// handling information. In addition to the symbol, this returns - /// by-reference: - /// - /// IsIndirect - True if the returned symbol is actually a stub that contains - /// the address of the symbol, false if the symbol is the global itself. - /// - /// IsPCRel - True if the symbol reference is already pc-relative, false if - /// the caller needs to subtract off the address of the reference from the - /// symbol. + /// getSymbolForDwarfGlobalReference - Return an MCExpr to use for a reference + /// to the specified global variable from exception handling information. /// virtual const MCExpr * getSymbolForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang, - MachineModuleInfo *MMI, - bool &IsIndirect, bool &IsPCRel) const; - -protected: - virtual const MCSection * - SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; -}; - - - + MachineModuleInfo *MMI, unsigned Encoding) const; -class TargetLoweringObjectFileELF : public TargetLoweringObjectFile { - mutable void *UniquingMap; -protected: - /// TLSDataSection - Section directive for Thread Local data. - /// - const MCSection *TLSDataSection; // Defaults to ".tdata". - - /// TLSBSSSection - Section directive for Thread Local uninitialized data. - /// Null if this target doesn't support a BSS section. - /// - const MCSection *TLSBSSSection; // Defaults to ".tbss". - - const MCSection *DataRelSection; - const MCSection *DataRelLocalSection; - const MCSection *DataRelROSection; - const MCSection *DataRelROLocalSection; - - const MCSection *MergeableConst4Section; - const MCSection *MergeableConst8Section; - const MCSection *MergeableConst16Section; - -protected: - const MCSection *getELFSection(StringRef Section, unsigned Type, - unsigned Flags, SectionKind Kind, - bool IsExplicit = false) const; -public: - TargetLoweringObjectFileELF() : UniquingMap(0) {} - ~TargetLoweringObjectFileELF(); - - virtual void Initialize(MCContext &Ctx, const TargetMachine &TM); - - /// getSectionForConstant - Given a constant with the SectionKind, return a - /// section that it should be placed in. - virtual const MCSection *getSectionForConstant(SectionKind Kind) const; - - - virtual const MCSection * - getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; - - virtual const MCSection * - SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; -}; - - - -class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile { - mutable void *UniquingMap; - - const MCSection *CStringSection; - const MCSection *UStringSection; - const MCSection *TextCoalSection; - const MCSection *ConstTextCoalSection; - const MCSection *ConstDataCoalSection; - const MCSection *ConstDataSection; - const MCSection *DataCoalSection; - const MCSection *DataCommonSection; - const MCSection *DataBSSSection; - const MCSection *FourByteConstantSection; - const MCSection *EightByteConstantSection; - const MCSection *SixteenByteConstantSection; - - const MCSection *LazySymbolPointerSection; - const MCSection *NonLazySymbolPointerSection; -public: - TargetLoweringObjectFileMachO() : UniquingMap(0) {} - ~TargetLoweringObjectFileMachO(); - - virtual void Initialize(MCContext &Ctx, const TargetMachine &TM); - - virtual const MCSection * - SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; - - virtual const MCSection * - getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; - - virtual const MCSection *getSectionForConstant(SectionKind Kind) const; - - /// shouldEmitUsedDirectiveFor - This hook allows targets to selectively - /// decide not to emit the UsedDirective for some symbols in llvm.used. - /// FIXME: REMOVE this (rdar://7071300) - virtual bool shouldEmitUsedDirectiveFor(const GlobalValue *GV, - Mangler *) const; - - /// getMachOSection - Return the MCSection for the specified mach-o section. - /// This requires the operands to be valid. - const MCSectionMachO *getMachOSection(StringRef Segment, - StringRef Section, - unsigned TypeAndAttributes, - SectionKind K) const { - return getMachOSection(Segment, Section, TypeAndAttributes, 0, K); - } - const MCSectionMachO *getMachOSection(StringRef Segment, - StringRef Section, - unsigned TypeAndAttributes, - unsigned Reserved2, - SectionKind K) const; - - /// getTextCoalSection - Return the "__TEXT,__textcoal_nt" section we put weak - /// text symbols into. - const MCSection *getTextCoalSection() const { - return TextCoalSection; - } - - /// getConstTextCoalSection - Return the "__TEXT,__const_coal" section - /// we put weak read-only symbols into. - const MCSection *getConstTextCoalSection() const { - return ConstTextCoalSection; - } - - /// getLazySymbolPointerSection - Return the section corresponding to - /// the .lazy_symbol_pointer directive. - const MCSection *getLazySymbolPointerSection() const { - return LazySymbolPointerSection; - } - - /// getNonLazySymbolPointerSection - Return the section corresponding to - /// the .non_lazy_symbol_pointer directive. - const MCSection *getNonLazySymbolPointerSection() const { - return NonLazySymbolPointerSection; - } - - /// getSymbolForDwarfGlobalReference - The mach-o version of this method - /// defaults to returning a stub reference. virtual const MCExpr * - getSymbolForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang, - MachineModuleInfo *MMI, - bool &IsIndirect, bool &IsPCRel) const; -}; + getSymbolForDwarfReference(const MCSymbol *Sym, MachineModuleInfo *MMI, + unsigned Encoding) const; + virtual unsigned getPersonalityEncoding() const; + virtual unsigned getLSDAEncoding() const; + virtual unsigned getFDEEncoding() const; + virtual unsigned getTTypeEncoding() const; - -class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile { - mutable void *UniquingMap; -public: - TargetLoweringObjectFileCOFF() : UniquingMap(0) {} - ~TargetLoweringObjectFileCOFF(); - - virtual void Initialize(MCContext &Ctx, const TargetMachine &TM); - - virtual const MCSection * - getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; - +protected: virtual const MCSection * SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, Mangler *Mang, const TargetMachine &TM) const; - - /// getCOFFSection - Return the MCSection for the specified COFF section. - /// FIXME: Switch this to a semantic view eventually. - const MCSection *getCOFFSection(StringRef Name, bool isDirective, - SectionKind K) const; }; } // end namespace llvm |
