class MCSymbol;
class MCSymbolRefExpr;
class MCStreamer;
+ class MCValue;
class ConstantExpr;
class GlobalValue;
class TargetMachine;
class TargetLoweringObjectFile : public MCObjectFileInfo {
MCContext *Ctx;
- const DataLayout *DL;
TargetLoweringObjectFile(
- const TargetLoweringObjectFile&) LLVM_DELETED_FUNCTION;
- void operator=(const TargetLoweringObjectFile&) LLVM_DELETED_FUNCTION;
+ const TargetLoweringObjectFile&) = delete;
+ void operator=(const TargetLoweringObjectFile&) = delete;
+
+protected:
+ bool SupportIndirectSymViaGOTPCRel;
+ bool SupportGOTPCRelWithOffset;
public:
MCContext &getContext() const { return *Ctx; }
- TargetLoweringObjectFile() : MCObjectFileInfo(), Ctx(nullptr), DL(nullptr) {}
+ TargetLoweringObjectFile()
+ : MCObjectFileInfo(), Ctx(nullptr), SupportIndirectSymViaGOTPCRel(false),
+ SupportGOTPCRelWithOffset(true) {}
virtual ~TargetLoweringObjectFile();
/// implementations a chance to set up their default sections.
virtual void Initialize(MCContext &ctx, const TargetMachine &TM);
- virtual void emitPersonalityValue(MCStreamer &Streamer,
- const TargetMachine &TM,
+ virtual void emitPersonalityValue(MCStreamer &Streamer, const DataLayout &TM,
const MCSymbol *Sym) const;
- /// Extract the dependent library name from a linker option string. Returns
- /// StringRef() if the option does not specify a library.
- virtual StringRef getDepLibFromLinkerOpt(StringRef LinkerOption) const {
- return StringRef();
- }
-
/// Emit the module flags that the platform cares about.
virtual void emitModuleFlags(MCStreamer &Streamer,
ArrayRef<Module::ModuleFlagEntry> Flags,
/// Given a constant with the SectionKind, return a section that it should be
/// placed in.
- virtual const MCSection *getSectionForConstant(SectionKind Kind,
- const Constant *C) const;
+ virtual MCSection *getSectionForConstant(const DataLayout &DL,
+ SectionKind Kind,
+ const Constant *C) const;
/// Classify the specified global variable into a set of target independent
/// categories embodied in SectionKind.
/// This method computes the appropriate section to emit the specified global
/// variable or function definition. This should not be passed external (or
/// available externally) globals.
- const MCSection *SectionForGlobal(const GlobalValue *GV,
- SectionKind Kind, Mangler &Mang,
- const TargetMachine &TM) const;
+ MCSection *SectionForGlobal(const GlobalValue *GV, SectionKind Kind,
+ Mangler &Mang, const TargetMachine &TM) const;
/// This method computes the appropriate section to emit the specified global
/// variable or function definition. This should not be passed external (or
/// available externally) globals.
- const MCSection *SectionForGlobal(const GlobalValue *GV,
- Mangler &Mang,
- const TargetMachine &TM) const {
+ MCSection *SectionForGlobal(const GlobalValue *GV, Mangler &Mang,
+ const TargetMachine &TM) const {
return SectionForGlobal(GV, getKindForGlobal(GV, TM), Mang, TM);
}
- virtual const MCSection *
- getSectionForJumpTable(const Function &F, Mangler &Mang,
- const TargetMachine &TM) const;
+ virtual void getNameWithPrefix(SmallVectorImpl<char> &OutName,
+ const GlobalValue *GV,
+ bool CannotUsePrivateLabel, Mangler &Mang,
+ const TargetMachine &TM) const;
+
+ virtual MCSection *getSectionForJumpTable(const Function &F, Mangler &Mang,
+ const TargetMachine &TM) const;
virtual bool shouldPutJumpTableInFunctionSection(bool UsesLabelDifference,
const Function &F) const;
/// 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.
- virtual const MCSection *
+ virtual MCSection *
getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler &Mang, const TargetMachine &TM) const = 0;
getTTypeReference(const MCSymbolRefExpr *Sym, unsigned Encoding,
MCStreamer &Streamer) const;
- virtual const MCSection *getStaticCtorSection(unsigned Priority,
- const MCSymbol *KeySym) const {
+ virtual MCSection *getStaticCtorSection(unsigned Priority,
+ const MCSymbol *KeySym) const {
return StaticCtorSection;
}
- virtual const MCSection *getStaticDtorSection(unsigned Priority,
- const MCSymbol *KeySym) const {
+ virtual MCSection *getStaticDtorSection(unsigned Priority,
+ const MCSymbol *KeySym) const {
return StaticDtorSection;
}
return nullptr;
}
+ /// \brief Target supports replacing a data "PC"-relative access to a symbol
+ /// through another symbol, by accessing the later via a GOT entry instead?
+ bool supportIndirectSymViaGOTPCRel() const {
+ return SupportIndirectSymViaGOTPCRel;
+ }
+
+ /// \brief Target GOT "PC"-relative relocation supports encoding an additional
+ /// binary expression with an offset?
+ bool supportGOTPCRelWithOffset() const {
+ return SupportGOTPCRelWithOffset;
+ }
+
+ /// \brief Get the target specific PC relative GOT entry relocation
+ virtual const MCExpr *getIndirectSymViaGOTPCRel(const MCSymbol *Sym,
+ const MCValue &MV,
+ int64_t Offset,
+ MachineModuleInfo *MMI,
+ MCStreamer &Streamer) const {
+ return nullptr;
+ }
+
+ virtual void emitLinkerFlagsForGlobal(raw_ostream &OS, const GlobalValue *GV,
+ const Mangler &Mang) const {}
+
protected:
- virtual const MCSection *
- SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
- Mangler &Mang, const TargetMachine &TM) const = 0;
+ virtual MCSection *SelectSectionForGlobal(const GlobalValue *GV,
+ SectionKind Kind, Mangler &Mang,
+ const TargetMachine &TM) const = 0;
};
} // end namespace llvm