#ifndef LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
#define LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringMap.h"
#include "llvm/MC/SectionKind.h"
namespace llvm {
+ class Mangler;
class MCSection;
+ class MCSectionMachO;
class MCContext;
class GlobalValue;
- class Mangler;
+ class StringRef;
class TargetMachine;
-
-
-/// SectionInfo - This class is a target-independent classification of a global
-/// which is used to simplify target-specific code by exposing common
-/// predicates.
-class SectionInfo : public SectionKind {
- /// Weak - This is true if the referenced symbol is weak (i.e. linkonce,
- /// weak, weak_odr, etc). This is orthogonal from the categorization.
- bool Weak : 1;
-
-public:
-
- /// Weak - This is true if the referenced symbol is weak (i.e. linkonce,
- /// weak, weak_odr, etc). This is orthogonal from the categorization.
- bool isWeak() const { return Weak; }
-
- static SectionInfo get(Kind K, bool isWeak = false) {
- SectionInfo Res;
- Res.K = K;
- Res.Weak = isWeak;
- return Res;
- }
- static SectionInfo get(SectionKind K, bool isWeak = false) {
- SectionInfo Res;
- *(SectionKind*)&Res = K;
- Res.Weak = isWeak;
- return Res;
- }
-};
+ class TargetAsmInfo;
class TargetLoweringObjectFile {
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; // Defaults to ".text".
+ const MCSection *TextSection;
/// DataSection - Section directive for standard data.
///
- const MCSection *DataSection; // Defaults to ".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;
- // FIXME: SINK THESE.
- const MCSection *BSSSection_;
+ /// StaticCtorSection - This section contains the static constructor pointer
+ /// list.
+ const MCSection *StaticCtorSection;
- /// ReadOnlySection - This is the directive that is emitted to switch to a
- /// read-only section for constant data (e.g. data declared const,
- /// jump tables).
- const MCSection *ReadOnlySection; // Defaults to NULL
-
- /// 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 *CStringSection_;
+ /// 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;
public:
- // FIXME: NONPUB.
- const MCSection *getOrCreateSection(const char *Name,
- bool isDirective,
- SectionKind K) const;
-public:
+ MCContext &getContext() const { return *Ctx; }
+
+
virtual ~TargetLoweringObjectFile();
/// Initialize - this method must be called before any actual lowering is
const MCSection *getTextSection() const { return TextSection; }
const MCSection *getDataSection() const { return DataSection; }
+ 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;
+ }
/// 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 {
- return (GV!=0);
+ return GV != 0;
}
- /// getSectionForMergeableConstant - Given a mergeable constant with the
- /// specified size and relocation information, return a section that it
- /// should be placed in.
- virtual const MCSection *
- getSectionForMergeableConstant(SectionKind Kind) const;
-
- /// getKindForNamedSection - If this target wants to be able to override
- /// section flags based on the name of the section specified for a global
- /// variable, it can implement this. This is used on ELF systems so that
- /// ".tbss" gets the TLS bit set etc.
- virtual SectionKind getKindForNamedSection(const char *Section,
- SectionKind K) const {
- return K;
- }
+ /// getSectionForConstant - Given a constant with the SectionKind, return a
+ /// section that it should be placed in.
+ virtual const MCSection *getSectionForConstant(SectionKind Kind) const;
+
+ /// getKindForGlobal - Classify the specified global variable into a set of
+ /// target independent categories embodied in SectionKind.
+ static SectionKind getKindForGlobal(const GlobalValue *GV,
+ const TargetMachine &TM);
/// SectionForGlobal - 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,
+ SectionKind Kind, Mangler *Mang,
const TargetMachine &TM) const;
+ /// SectionForGlobal - 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 {
+ 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.
+ virtual const MCSection *
+ getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
+ Mangler *Mang, const TargetMachine &TM) const = 0;
+
/// getSpecialCasedSectionGlobals - Allow the target to completely override
/// section assignment of a global.
- /// FIXME: ELIMINATE this by making PIC16 implement ADDRESS with
- /// getFlagsForNamedSection.
virtual const MCSection *
getSpecialCasedSectionGlobals(const GlobalValue *GV, Mangler *Mang,
- SectionInfo Kind) const {
+ SectionKind Kind) const {
return 0;
}
- /// getSectionFlagsAsString - Turn the flags in the specified SectionKind
- /// into a string that can be printed to the assembly file after the
- /// ".section foo" part of a section directive.
- virtual void getSectionFlagsAsString(SectionKind Kind,
- SmallVectorImpl<char> &Str) const {
- }
-
protected:
virtual const MCSection *
- SelectSectionForGlobal(const GlobalValue *GV, SectionInfo Kind,
+ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const;
};
class TargetLoweringObjectFileELF : public TargetLoweringObjectFile {
- bool AtIsCommentChar; // True if @ is the comment character on this target.
bool HasCrazyBSS;
-public:
- /// ELF Constructor - AtIsCommentChar is true if the CommentCharacter from TAI
- /// is "@".
- TargetLoweringObjectFileELF(bool atIsCommentChar = false,
- // FIXME: REMOVE AFTER UNIQUING IS FIXED.
- bool hasCrazyBSS = false)
- : AtIsCommentChar(atIsCommentChar), HasCrazyBSS(hasCrazyBSS) {}
-
- virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
-
-
- /// getSectionForMergeableConstant - Given a mergeable constant with the
- /// specified size and relocation information, return a section that it
- /// should be placed in.
- virtual const MCSection *
- getSectionForMergeableConstant(SectionKind Kind) const;
+protected:
+ /// TLSDataSection - Section directive for Thread Local data.
+ ///
+ const MCSection *TLSDataSection; // Defaults to ".tdata".
- virtual SectionKind getKindForNamedSection(const char *Section,
- SectionKind K) const;
- void getSectionFlagsAsString(SectionKind Kind,
- SmallVectorImpl<char> &Str) const;
+ /// TLSBSSSection - Section directive for Thread Local uninitialized data.
+ /// Null if this target doesn't support a BSS section.
+ ///
+ const MCSection *TLSBSSSection; // Defaults to ".tbss".
- virtual const MCSection *
- SelectSectionForGlobal(const GlobalValue *GV, SectionInfo Kind,
- Mangler *Mang, const TargetMachine &TM) const;
-protected:
const MCSection *DataRelSection;
const MCSection *DataRelLocalSection;
const MCSection *DataRelROSection;
const MCSection *MergeableConst4Section;
const MCSection *MergeableConst8Section;
const MCSection *MergeableConst16Section;
+
+protected:
+ const MCSection *getELFSection(const char *Name, bool isDirective,
+ SectionKind Kind) const;
+public:
+ TargetLoweringObjectFileELF(// FIXME: REMOVE AFTER UNIQUING IS FIXED.
+ bool hasCrazyBSS = false)
+ : HasCrazyBSS(hasCrazyBSS) {}
+
+ 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 *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, SectionInfo Kind,
+ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const;
virtual const MCSection *
- getSectionForMergeableConstant(SectionKind Kind) const;
+ 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(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;
+ }
+
+ /// getNonLazySymbolPointerSection - Return the section corresponding to
+ /// the .non_lazy_symbol_pointer directive.
+ const MCSection *getNonLazySymbolPointerSection() const {
+ return NonLazySymbolPointerSection;
+ }
};
public:
virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
- virtual void getSectionFlagsAsString(SectionKind Kind,
- SmallVectorImpl<char> &Str) const;
+ virtual const MCSection *
+ getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
+ Mangler *Mang, const TargetMachine &TM) const;
virtual const MCSection *
- SelectSectionForGlobal(const GlobalValue *GV, SectionInfo Kind,
+ 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
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