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88c816453f
this. XFAIL'd, because the COFF AsmParser can't handle .section yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132220 91177308-0d34-0410-b5e6-96231b3b80d8
233 lines
8.3 KiB
C++
233 lines
8.3 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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protected:
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/// TLSDataSection - Section directive for Thread Local data.
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///
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const MCSection *TLSDataSection; // Defaults to ".tdata".
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/// TLSBSSSection - Section directive for Thread Local uninitialized data.
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/// Null if this target doesn't support a BSS section.
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///
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const MCSection *TLSBSSSection; // Defaults to ".tbss".
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const MCSection *DataRelSection;
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const MCSection *DataRelLocalSection;
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const MCSection *DataRelROSection;
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const MCSection *DataRelROLocalSection;
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const MCSection *MergeableConst4Section;
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const MCSection *MergeableConst8Section;
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const MCSection *MergeableConst16Section;
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public:
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TargetLoweringObjectFileELF() {}
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~TargetLoweringObjectFileELF() {}
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virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
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virtual const MCSection *getEHFrameSection() const;
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virtual const MCSection *getWin64EHFuncTableSection(StringRef) const {
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return NULL;
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}
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virtual const MCSection *getWin64EHTableSection(StringRef) const{return NULL;}
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virtual void emitPersonalityValue(MCStreamer &Streamer,
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const TargetMachine &TM,
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const MCSymbol *Sym) const;
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const MCSection *getDataRelSection() const { return DataRelSection; }
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/// getSectionForConstant - Given a constant with the SectionKind, return a
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/// section that it should be placed in.
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virtual const MCSection *getSectionForConstant(SectionKind Kind) const;
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virtual const MCSection *
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getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
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Mangler *Mang, const TargetMachine &TM) const;
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virtual const MCSection *
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SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
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Mangler *Mang, const TargetMachine &TM) const;
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/// getExprForDwarfGlobalReference - Return an MCExpr to use for a reference
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/// to the specified global variable from exception handling information.
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///
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virtual const MCExpr *
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getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
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MachineModuleInfo *MMI, unsigned Encoding,
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MCStreamer &Streamer) const;
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// getCFIPersonalitySymbol - The symbol that gets passed to .cfi_personality.
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virtual MCSymbol *
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getCFIPersonalitySymbol(const GlobalValue *GV, Mangler *Mang,
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MachineModuleInfo *MMI) const;
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};
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class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
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/// TLSDataSection - Section for thread local data.
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///
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const MCSection *TLSDataSection; // Defaults to ".tdata".
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/// TLSBSSSection - Section for thread local uninitialized data.
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///
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const MCSection *TLSBSSSection; // Defaults to ".tbss".
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/// TLSTLVSection - Section for thread local structure information.
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/// Contains the source code name of the variable, visibility and a pointer
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/// to the initial value (.tdata or .tbss).
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const MCSection *TLSTLVSection; // Defaults to ".tlv".
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/// TLSThreadInitSection - Section for thread local data initialization
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/// functions.
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const MCSection *TLSThreadInitSection; // Defaults to ".thread_init_func".
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const MCSection *CStringSection;
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const MCSection *UStringSection;
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const MCSection *TextCoalSection;
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const MCSection *ConstTextCoalSection;
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const MCSection *ConstDataSection;
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const MCSection *DataCoalSection;
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const MCSection *DataCommonSection;
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const MCSection *DataBSSSection;
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const MCSection *FourByteConstantSection;
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const MCSection *EightByteConstantSection;
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const MCSection *SixteenByteConstantSection;
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const MCSection *LazySymbolPointerSection;
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const MCSection *NonLazySymbolPointerSection;
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public:
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TargetLoweringObjectFileMachO() {}
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~TargetLoweringObjectFileMachO() {}
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virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
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virtual const MCSection *getEHFrameSection() const;
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virtual const MCSection *getWin64EHFuncTableSection(StringRef) const {
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return NULL;
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}
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virtual const MCSection *getWin64EHTableSection(StringRef) const{return NULL;}
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virtual const MCSection *
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SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
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Mangler *Mang, const TargetMachine &TM) const;
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virtual const MCSection *
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getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
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Mangler *Mang, const TargetMachine &TM) const;
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virtual const MCSection *getSectionForConstant(SectionKind Kind) const;
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/// shouldEmitUsedDirectiveFor - This hook allows targets to selectively
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/// decide not to emit the UsedDirective for some symbols in llvm.used.
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/// FIXME: REMOVE this (rdar://7071300)
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virtual bool shouldEmitUsedDirectiveFor(const GlobalValue *GV,
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Mangler *) const;
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/// getTextCoalSection - Return the "__TEXT,__textcoal_nt" section we put weak
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/// text symbols into.
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const MCSection *getTextCoalSection() const {
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return TextCoalSection;
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}
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/// getConstTextCoalSection - Return the "__TEXT,__const_coal" section
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/// we put weak read-only symbols into.
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const MCSection *getConstTextCoalSection() const {
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return ConstTextCoalSection;
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}
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/// getLazySymbolPointerSection - Return the section corresponding to
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/// the .lazy_symbol_pointer directive.
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const MCSection *getLazySymbolPointerSection() const {
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return LazySymbolPointerSection;
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}
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/// getNonLazySymbolPointerSection - Return the section corresponding to
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/// the .non_lazy_symbol_pointer directive.
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const MCSection *getNonLazySymbolPointerSection() const {
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return NonLazySymbolPointerSection;
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}
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/// getExprForDwarfGlobalReference - The mach-o version of this method
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/// defaults to returning a stub reference.
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virtual const MCExpr *
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getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
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MachineModuleInfo *MMI, unsigned Encoding,
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MCStreamer &Streamer) const;
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// getCFIPersonalitySymbol - The symbol that gets passed to .cfi_personality.
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virtual MCSymbol *
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getCFIPersonalitySymbol(const GlobalValue *GV, Mangler *Mang,
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MachineModuleInfo *MMI) const;
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virtual unsigned getPersonalityEncoding() const;
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virtual unsigned getLSDAEncoding() const;
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virtual unsigned getFDEEncoding(bool CFI) const;
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virtual unsigned getTTypeEncoding() const;
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};
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class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile {
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const MCSection *DrectveSection;
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const MCSection *PDataSection;
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const MCSection *XDataSection;
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public:
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TargetLoweringObjectFileCOFF() {}
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~TargetLoweringObjectFileCOFF() {}
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virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
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virtual const MCSection *getEHFrameSection() const;
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virtual const MCSection *getWin64EHFuncTableSection(StringRef) const;
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virtual const MCSection *getWin64EHTableSection(StringRef) const;
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virtual const MCSection *getDrectveSection() const { return DrectveSection; }
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virtual const MCSection *
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getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
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Mangler *Mang, const TargetMachine &TM) const;
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virtual const MCSection *
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SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
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Mangler *Mang, const TargetMachine &TM) const;
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};
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} // end namespace llvm
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#endif
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