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thirdparty/clang/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h

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+//==-- llvm/CodeGen/TargetLoweringObjectFileImpl.h - Object Info -*- C++ -*-==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements classes used to handle lowerings specific to common
+// object file formats.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_TARGETLOWERINGOBJECTFILEIMPL_H
+#define LLVM_CODEGEN_TARGETLOWERINGOBJECTFILEIMPL_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/MC/SectionKind.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
+
+namespace llvm {
+  class MachineModuleInfo;
+  class Mangler;
+  class MCAsmInfo;
+  class MCExpr;
+  class MCSection;
+  class MCSectionMachO;
+  class MCSymbol;
+  class MCContext;
+  class GlobalValue;
+  class TargetMachine;
+
+
+class TargetLoweringObjectFileELF : public TargetLoweringObjectFile {
+  bool UseInitArray;
+
+public:
+  virtual ~TargetLoweringObjectFileELF() {}
+
+  virtual void emitPersonalityValue(MCStreamer &Streamer,
+                                    const TargetMachine &TM,
+                                    const MCSymbol *Sym) const;
+
+  /// 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;
+
+  /// getTTypeGlobalReference - Return an MCExpr to use for a reference to the
+  /// specified type info global variable from exception handling information.
+  virtual const MCExpr *
+  getTTypeGlobalReference(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;
+
+  void InitializeELF(bool UseInitArray_);
+  virtual const MCSection *
+  getStaticCtorSection(unsigned Priority = 65535) const;
+  virtual const MCSection *
+  getStaticDtorSection(unsigned Priority = 65535) const;
+};
+
+
+
+class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
+public:
+  virtual ~TargetLoweringObjectFileMachO() {}
+
+  /// emitModuleFlags - Emit the module flags that specify the garbage
+  /// collection information.
+  virtual void emitModuleFlags(MCStreamer &Streamer,
+                               ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
+                               Mangler *Mang, const TargetMachine &TM) const;
+
+  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;
+
+  /// getTTypeGlobalReference - The mach-o version of this method
+  /// defaults to returning a stub reference.
+  virtual const MCExpr *
+  getTTypeGlobalReference(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;
+};
+
+
+
+class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile {
+public:
+  virtual ~TargetLoweringObjectFileCOFF() {}
+
+  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;
+};
+
+} // end namespace llvm
+
+#endif