#ifndef LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
#define LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
+#include "llvm/ADT/StringRef.h"
#include "llvm/MC/SectionKind.h"
namespace llvm {
+ class MachineModuleInfo;
class Mangler;
+ class MCAsmInfo;
+ class MCContext;
+ class MCExpr;
class MCSection;
class MCSectionMachO;
- class MCContext;
+ class MCSymbol;
+ class MCStreamer;
class GlobalValue;
- class StringRef;
class TargetMachine;
- class MCAsmInfo;
class TargetLoweringObjectFile {
MCContext *Ctx;
/// 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 *DwarfRangesSection;
const MCSection *DwarfMacroInfoSection;
+ // Extra TLS Variable Data section. If the target needs to put additional
+ // information for a TLS variable, it'll go here.
+ const MCSection *TLSExtraDataSection;
+
+ /// CommDirectiveSupportsAlignment - True if .comm supports alignment. This
+ /// is a hack for as long as we support 10.4 Tiger, whose assembler doesn't
+ /// support alignment on comm.
+ bool CommDirectiveSupportsAlignment;
+
+ /// SupportsWeakEmptyEHFrame - True if target object file supports a
+ /// weak_definition of constant 0 for an omitted EH frame.
+ bool SupportsWeakOmittedEHFrame;
+
+ /// IsFunctionEHFrameSymbolPrivate - This flag is set to true if the
+ /// "EH_frame" symbol for EH information should be an assembler temporary (aka
+ /// private linkage, aka an L or .L label) or false if it should be a normal
+ /// non-.globl label. This defaults to true.
+ bool IsFunctionEHFrameSymbolPrivate;
public:
MCContext &getContext() const { return *Ctx; }
-
virtual ~TargetLoweringObjectFile();
/// Initialize - this method must be called before any actual lowering is
Ctx = &ctx;
}
+ bool isFunctionEHFrameSymbolPrivate() const {
+ return IsFunctionEHFrameSymbolPrivate;
+ }
+ bool getSupportsWeakOmittedEHFrame() const {
+ return SupportsWeakOmittedEHFrame;
+ }
+ bool getCommDirectiveSupportsAlignment() const {
+ return CommDirectiveSupportsAlignment;
+ }
+
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; }
+ virtual const MCSection *getEHFrameSection() const = 0;
+ virtual void emitPersonalityValue(MCStreamer &Streamer,
+ const TargetMachine &TM,
+ const MCSymbol *Sym) const;
const MCSection *getDwarfAbbrevSection() const { return DwarfAbbrevSection; }
const MCSection *getDwarfInfoSection() const { return DwarfInfoSection; }
const MCSection *getDwarfLineSection() const { return DwarfLineSection; }
const MCSection *getDwarfMacroInfoSection() const {
return DwarfMacroInfoSection;
}
+ const MCSection *getTLSExtraDataSection() const {
+ return TLSExtraDataSection;
+ }
+ virtual const MCSection *getWin64EHFuncTableSection(StringRef suffix)const=0;
+ virtual const MCSection *getWin64EHTableSection(StringRef suffix) const = 0;
/// shouldEmitUsedDirectiveFor - This hook allows targets to selectively
/// decide not to emit the UsedDirective for some symbols in llvm.used.
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.
- ///
- const MCSection *TLSDataSection; // Defaults to ".tdata".
-
- /// TLSBSSSection - Section directive for Thread Local uninitialized data.
- /// Null if this target doesn't support a BSS section.
+ /// getExprForDwarfGlobalReference - Return an MCExpr to use for a reference
+ /// to the specified global variable from exception handling information.
///
- 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;
-};
-
-
-
-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);
-
- 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;
-
- /// 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;
- }
-};
+ virtual const MCExpr *
+ getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
+ MachineModuleInfo *MMI, unsigned Encoding,
+ MCStreamer &Streamer) const;
+
+ // getCFIPersonalitySymbol - The symbol that gets passed to .cfi_personality.
+ virtual MCSymbol *
+ getCFIPersonalitySymbol(const GlobalValue *GV, Mangler *Mang,
+ MachineModuleInfo *MMI) const;
+
+ ///
+ const MCExpr *
+ getExprForDwarfReference(const MCSymbol *Sym, unsigned Encoding,
+ MCStreamer &Streamer) const;
+
+ virtual unsigned getPersonalityEncoding() const;
+ virtual unsigned getLSDAEncoding() const;
+ virtual unsigned getFDEEncoding(bool CFI) const;
+ virtual unsigned getTTypeEncoding() const;
-
-
-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
projects / oota-llvm.git / blobdiff