#ifndef LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
#define LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/SectionKind.h"
namespace llvm {
- class MCSection;
+ class MachineModuleInfo;
+ class Mangler;
+ class MCAsmInfo;
class MCContext;
+ class MCExpr;
+ class MCSection;
+ class MCSectionMachO;
+ class MCSymbol;
+ class MCStreamer;
class GlobalValue;
- class Mangler;
class TargetMachine;
-
-class TargetLoweringObjectFile {
+class TargetLoweringObjectFile : public MCObjectFileInfo {
MCContext *Ctx;
-protected:
-
- TargetLoweringObjectFile();
-
- /// TextSection - Section directive for standard text.
- ///
- const MCSection *TextSection;
-
- /// DataSection - Section directive for standard data.
- ///
- const MCSection *DataSection;
- /// BSSSection - Section that is default initialized to zero.
- const MCSection *BSSSection;
+ TargetLoweringObjectFile(const TargetLoweringObjectFile&); // DO NOT IMPLEMENT
+ void operator=(const TargetLoweringObjectFile&); // DO NOT IMPLEMENT
- /// 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;
-
-public:
- // FIXME: NONPUB.
- const MCSection *getOrCreateSection(const char *Name,
- bool isDirective,
- SectionKind K) const;
public:
+ MCContext &getContext() const { return *Ctx; }
+
+ TargetLoweringObjectFile() : MCObjectFileInfo(), Ctx(0) {}
virtual ~TargetLoweringObjectFile();
/// Initialize - this method must be called before any actual lowering is
/// done. This specifies the current context for codegen, and gives the
/// lowering implementations a chance to set up their default sections.
- virtual void Initialize(MCContext &ctx, const TargetMachine &TM) {
- Ctx = &ctx;
- }
-
+ virtual void Initialize(MCContext &ctx, const TargetMachine &TM);
- const MCSection *getTextSection() const { return TextSection; }
- const MCSection *getDataSection() const { return DataSection; }
+ virtual void emitPersonalityValue(MCStreamer &Streamer,
+ const TargetMachine &TM,
+ const MCSymbol *Sym) const;
/// shouldEmitUsedDirectiveFor - This hook allows targets to selectively
/// decide not to emit the UsedDirective for some symbols in llvm.used.
/// section that it should be placed in.
virtual const MCSection *getSectionForConstant(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;
- }
+ /// 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,
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, 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;
-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 *CStringSection;
-
- const MCSection *DataRelSection;
- const MCSection *DataRelLocalSection;
- const MCSection *DataRelROSection;
- const MCSection *DataRelROLocalSection;
-
- const MCSection *MergeableConst4Section;
- const MCSection *MergeableConst8Section;
- const MCSection *MergeableConst16Section;
-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);
-
-
- /// getSectionForConstant - Given a constant with the SectionKind, return a
- /// section that it should be placed in.
- virtual const MCSection *getSectionForConstant(SectionKind Kind) const;
-
- virtual SectionKind getKindForNamedSection(const char *Section,
- SectionKind K) const;
- void getSectionFlagsAsString(SectionKind Kind,
- SmallVectorImpl<char> &Str) const;
-
- virtual const MCSection *
- SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
- Mangler *Mang, const TargetMachine &TM) const;
-};
+ virtual const MCExpr *
+ getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
+ MachineModuleInfo *MMI, unsigned Encoding,
+ MCStreamer &Streamer) const;
-
-
-class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
- const MCSection *CStringSection;
- const MCSection *TextCoalSection;
- const MCSection *ConstTextCoalSection;
- const MCSection *ConstDataCoalSection;
- const MCSection *ConstDataSection;
- const MCSection *DataCoalSection;
- const MCSection *FourByteConstantSection;
- const MCSection *EightByteConstantSection;
- const MCSection *SixteenByteConstantSection;
-public:
-
- virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
+ // getCFIPersonalitySymbol - The symbol that gets passed to .cfi_personality.
+ virtual MCSymbol *
+ getCFIPersonalitySymbol(const GlobalValue *GV, Mangler *Mang,
+ MachineModuleInfo *MMI) const;
- virtual const MCSection *
- SelectSectionForGlobal(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;
-};
-
-
-
-class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile {
-public:
- virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
-
- virtual void getSectionFlagsAsString(SectionKind Kind,
- SmallVectorImpl<char> &Str) const;
+ ///
+ const MCExpr *
+ getExprForDwarfReference(const MCSymbol *Sym, unsigned Encoding,
+ MCStreamer &Streamer) const;
+protected:
virtual const MCSection *
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const;