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148 lines
5.5 KiB
C++
148 lines
5.5 KiB
C++
//==-- llvm/CodeGen/TargetLoweringObjectFileImpl.h - Object Info -*- C++ -*-==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements classes used to handle lowerings specific to common
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// object file formats.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_TARGETLOWERINGOBJECTFILEIMPL_H
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#define LLVM_CODEGEN_TARGETLOWERINGOBJECTFILEIMPL_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/MC/SectionKind.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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namespace llvm {
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class MachineModuleInfo;
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class Mangler;
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class MCAsmInfo;
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class MCExpr;
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class MCSection;
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class MCSectionMachO;
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class MCSymbol;
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class MCContext;
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class GlobalValue;
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class TargetMachine;
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class TargetLoweringObjectFileELF : public TargetLoweringObjectFile {
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bool UseInitArray;
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public:
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virtual ~TargetLoweringObjectFileELF() {}
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void emitPersonalityValue(MCStreamer &Streamer, const TargetMachine &TM,
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const MCSymbol *Sym) const override;
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/// Given a constant with the SectionKind, return a section that it should be
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/// placed in.
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const MCSection *getSectionForConstant(SectionKind Kind) const override;
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const MCSection *getExplicitSectionGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const override;
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const MCSection *SelectSectionForGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const override;
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/// Return an MCExpr to use for a reference to the specified type info global
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/// variable from exception handling information.
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const MCExpr *
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getTTypeGlobalReference(const GlobalValue *GV, unsigned Encoding,
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Mangler &Mang, const TargetMachine &TM,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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// The symbol that gets passed to .cfi_personality.
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MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV, Mangler &Mang,
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const TargetMachine &TM,
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MachineModuleInfo *MMI) const override;
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void InitializeELF(bool UseInitArray_);
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const MCSection *
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getStaticCtorSection(unsigned Priority = 65535) const override;
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const MCSection *
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getStaticDtorSection(unsigned Priority = 65535) const override;
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};
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class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
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public:
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virtual ~TargetLoweringObjectFileMachO() {}
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/// Extract the dependent library name from a linker option string. Returns
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/// StringRef() if the option does not specify a library.
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StringRef getDepLibFromLinkerOpt(StringRef LinkerOption) const override;
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/// Emit the module flags that specify the garbage collection information.
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void emitModuleFlags(MCStreamer &Streamer,
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ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
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Mangler &Mang, const TargetMachine &TM) const override;
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bool isSectionAtomizableBySymbols(const MCSection &Section) const override;
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const MCSection *
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SelectSectionForGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const override;
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const MCSection *
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getExplicitSectionGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const override;
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const MCSection *getSectionForConstant(SectionKind Kind) const override;
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/// The mach-o version of this method defaults to returning a stub reference.
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const MCExpr *
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getTTypeGlobalReference(const GlobalValue *GV, unsigned Encoding,
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Mangler &Mang, const TargetMachine &TM,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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// The symbol that gets passed to .cfi_personality.
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MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV, Mangler &Mang,
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const TargetMachine &TM,
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MachineModuleInfo *MMI) const override;
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};
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class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile {
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public:
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virtual ~TargetLoweringObjectFileCOFF() {}
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const MCSection *
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getExplicitSectionGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const override;
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const MCSection *
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SelectSectionForGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const override;
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/// Extract the dependent library name from a linker option string. Returns
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/// StringRef() if the option does not specify a library.
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StringRef getDepLibFromLinkerOpt(StringRef LinkerOption) const override;
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/// Emit Obj-C garbage collection and linker options. Only linker option
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/// emission is implemented for COFF.
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void emitModuleFlags(MCStreamer &Streamer,
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ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
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Mangler &Mang, const TargetMachine &TM) const override;
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};
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} // end namespace llvm
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#endif
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