X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FTargetLoweringObjectFile.h;h=0df793dfd6071bfdb994ef21076bddbfaafae6fc;hb=5518a1355b8b09bf92419b65ea4e4854734b0ebc;hp=7cb7b9891953d4cf1cfac76fe572d89d8e0a88ae;hpb=af76e592c7f9deff0e55c13dbb4a34f07f1c7f64;p=oota-llvm.git diff --git a/include/llvm/Target/TargetLoweringObjectFile.h b/include/llvm/Target/TargetLoweringObjectFile.h index 7cb7b989195..0df793dfd60 100644 --- a/include/llvm/Target/TargetLoweringObjectFile.h +++ b/include/llvm/Target/TargetLoweringObjectFile.h @@ -15,114 +15,52 @@ #ifndef LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H #define LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H +#include "llvm/ADT/ArrayRef.h" +#include "llvm/MC/MCObjectFileInfo.h" #include "llvm/MC/SectionKind.h" +#include "llvm/Module.h" namespace llvm { + class MachineModuleInfo; class Mangler; - class MCSection; - class MCSectionMachO; class MCContext; + class MCExpr; + class MCSection; + class MCSymbol; + class MCSymbolRefExpr; + class MCStreamer; class GlobalValue; - class StringRef; class TargetMachine; - class MCAsmInfo; -class TargetLoweringObjectFile { +class TargetLoweringObjectFile : public MCObjectFileInfo { MCContext *Ctx; - - TargetLoweringObjectFile(const TargetLoweringObjectFile&); // DO NOT IMPLEMENT - void operator=(const TargetLoweringObjectFile&); // DO NOT IMPLEMENT -protected: - - TargetLoweringObjectFile(); - - /// TextSection - Section directive for standard text. - /// - const MCSection *TextSection; - - /// DataSection - Section directive for standard data. - /// - const MCSection *DataSection; - - /// BSSSection - Section that is default initialized to zero. - const MCSection *BSSSection; - - /// ReadOnlySection - Section that is readonly and can contain arbitrary - /// initialized data. Targets are not required to have a readonly section. - /// If they don't, various bits of code will fall back to using the data - /// section for constants. - const MCSection *ReadOnlySection; - - /// StaticCtorSection - This section contains the static constructor pointer - /// list. - const MCSection *StaticCtorSection; - /// StaticDtorSection - This section contains the static destructor pointer - /// list. - const MCSection *StaticDtorSection; - - /// LSDASection - If exception handling is supported by the target, this is - /// the section the Language Specific Data Area information is emitted to. - const MCSection *LSDASection; - - /// EHFrameSection - If exception handling is supported by the target, this is - /// the section the EH Frame is emitted to. - const MCSection *EHFrameSection; - - // Dwarf sections for debug info. If a target supports debug info, these must - // be set. - const MCSection *DwarfAbbrevSection; - const MCSection *DwarfInfoSection; - const MCSection *DwarfLineSection; - const MCSection *DwarfFrameSection; - const MCSection *DwarfPubNamesSection; - const MCSection *DwarfPubTypesSection; - const MCSection *DwarfDebugInlineSection; - const MCSection *DwarfStrSection; - const MCSection *DwarfLocSection; - const MCSection *DwarfARangesSection; - const MCSection *DwarfRangesSection; - const MCSection *DwarfMacroInfoSection; - + TargetLoweringObjectFile( + const TargetLoweringObjectFile&) LLVM_DELETED_FUNCTION; + void operator=(const TargetLoweringObjectFile&) LLVM_DELETED_FUNCTION; + public: - MCContext &getContext() const { return *Ctx; } - + TargetLoweringObjectFile() : MCObjectFileInfo(), Ctx(0) {} + virtual ~TargetLoweringObjectFile(); /// Initialize - this method must be called before any actual lowering is /// done. This specifies the current context for codegen, and gives the /// lowering implementations a chance to set up their default sections. - virtual void Initialize(MCContext &ctx, const TargetMachine &TM) { - Ctx = &ctx; - } - + virtual void Initialize(MCContext &ctx, const TargetMachine &TM); - const MCSection *getTextSection() const { return TextSection; } - const MCSection *getDataSection() const { return DataSection; } - const MCSection *getBSSSection() const { return BSSSection; } - const MCSection *getStaticCtorSection() const { return StaticCtorSection; } - const MCSection *getStaticDtorSection() const { return StaticDtorSection; } - const MCSection *getLSDASection() const { return LSDASection; } - const MCSection *getEHFrameSection() const { return EHFrameSection; } - const MCSection *getDwarfAbbrevSection() const { return DwarfAbbrevSection; } - const MCSection *getDwarfInfoSection() const { return DwarfInfoSection; } - const MCSection *getDwarfLineSection() const { return DwarfLineSection; } - const MCSection *getDwarfFrameSection() const { return DwarfFrameSection; } - const MCSection *getDwarfPubNamesSection() const{return DwarfPubNamesSection;} - const MCSection *getDwarfPubTypesSection() const{return DwarfPubTypesSection;} - const MCSection *getDwarfDebugInlineSection() const { - return DwarfDebugInlineSection; - } - const MCSection *getDwarfStrSection() const { return DwarfStrSection; } - const MCSection *getDwarfLocSection() const { return DwarfLocSection; } - const MCSection *getDwarfARangesSection() const { return DwarfARangesSection;} - const MCSection *getDwarfRangesSection() const { return DwarfRangesSection; } - const MCSection *getDwarfMacroInfoSection() const { - return DwarfMacroInfoSection; + virtual void emitPersonalityValue(MCStreamer &Streamer, + const TargetMachine &TM, + const MCSymbol *Sym) const; + + /// emitModuleFlags - Emit the module flags that the platform cares about. + virtual void emitModuleFlags(MCStreamer &, + ArrayRef, + Mangler *, const TargetMachine &) 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) @@ -155,9 +93,7 @@ public: const TargetMachine &TM) const { return SectionForGlobal(GV, getKindForGlobal(GV, TM), Mang, TM); } - - - + /// getExplicitSectionGlobal - Targets should implement this method to assign /// a section to globals with an explicit section specfied. The /// implementation of this method can assume that GV->hasSection() is true. @@ -173,155 +109,39 @@ public: return 0; } -protected: - virtual const MCSection * - SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; -}; - - - - -class TargetLoweringObjectFileELF : public TargetLoweringObjectFile { - mutable void *UniquingMap; -protected: - /// TLSDataSection - Section directive for Thread Local data. + /// getTTypeGlobalReference - Return an MCExpr to use for a reference + /// to the specified global variable from exception handling information. /// - 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; -}; + virtual const MCExpr * + getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang, + MachineModuleInfo *MMI, unsigned Encoding, + MCStreamer &Streamer) 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 *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); + // getCFIPersonalitySymbol - The symbol that gets passed to .cfi_personality. + virtual MCSymbol * + getCFIPersonalitySymbol(const GlobalValue *GV, Mangler *Mang, + MachineModuleInfo *MMI) const; - 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; + /// + const MCExpr * + getTTypeReference(const MCSymbolRefExpr *Sym, unsigned Encoding, + MCStreamer &Streamer) const; - /// getMachOSection - Return the MCSection for the specified mach-o section. - /// This requires the operands to be valid. - const MCSectionMachO *getMachOSection(const StringRef &Segment, - const StringRef &Section, - unsigned TypeAndAttributes, - SectionKind K) const { - return getMachOSection(Segment, Section, TypeAndAttributes, 0, K); - } - const MCSectionMachO *getMachOSection(const StringRef &Segment, - const StringRef &Section, - unsigned TypeAndAttributes, - unsigned Reserved2, - SectionKind K) const; - - /// getTextCoalSection - Return the "__TEXT,__textcoal_nt" section we put weak - /// symbols into. - const MCSection *getTextCoalSection() const { - return TextCoalSection; - } - - /// getLazySymbolPointerSection - Return the section corresponding to - /// the .lazy_symbol_pointer directive. - const MCSection *getLazySymbolPointerSection() const { - return LazySymbolPointerSection; + virtual const MCSection * + getStaticCtorSection(unsigned Priority = 65535) const { + (void)Priority; + return StaticCtorSection; } - - /// getNonLazySymbolPointerSection - Return the section corresponding to - /// the .non_lazy_symbol_pointer directive. - const MCSection *getNonLazySymbolPointerSection() const { - return NonLazySymbolPointerSection; + virtual const MCSection * + getStaticDtorSection(unsigned Priority = 65535) const { + (void)Priority; + return StaticDtorSection; } -}; - - -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(const char *Name, bool isDirective, - SectionKind K) const; }; } // end namespace llvm