1 //===- MCSectionCOFF.h - COFF Machine Code Sections -------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file declares the MCSectionCOFF class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_MC_MCSECTIONCOFF_H 15 #define LLVM_MC_MCSECTIONCOFF_H 16 17 #include "llvm/MC/MCSection.h" 18 19 #include "llvm/Support/COFF.h" 20 21 namespace llvm { 22 23 /// MCSectionCOFF - This represents a section on Windows 24 class MCSectionCOFF : public MCSection { 25 // The memory for this string is stored in the same MCContext as *this. 26 StringRef SectionName; 27 28 /// Characteristics - This is the Characteristics field of a section, 29 // drawn from the enums below. 30 unsigned Characteristics; 31 32 /// Selection - This is the Selection field for the section symbol, if 33 /// it is a COMDAT section (Characteristics & IMAGE_SCN_LNK_COMDAT) != 0 34 int Selection; 35 36 private: 37 friend class MCContext; 38 MCSectionCOFF(StringRef Section, unsigned Characteristics, 39 int Selection, SectionKind K) 40 : MCSection(SV_COFF, K), SectionName(Section), 41 Characteristics(Characteristics), Selection (Selection) { 42 assert ((Characteristics & 0x00F00000) == 0 && 43 "alignment must not be set upon section creation"); 44 } 45 ~MCSectionCOFF(); 46 47 public: 48 /// ShouldOmitSectionDirective - Decides whether a '.section' directive 49 /// should be printed before the section name 50 bool ShouldOmitSectionDirective(StringRef Name, const MCAsmInfo &MAI) const; 51 52 StringRef getSectionName() const { return SectionName; } 53 unsigned getCharacteristics() const { return Characteristics; } 54 int getSelection () const { return Selection; } 55 56 virtual void PrintSwitchToSection(const MCAsmInfo &MAI, 57 raw_ostream &OS) const; 58 virtual bool UseCodeAlign() const; 59 virtual bool isVirtualSection() const; 60 61 static bool classof(const MCSection *S) { 62 return S->getVariant() == SV_COFF; 63 } 64 static bool classof(const MCSectionCOFF *) { return true; } 65 }; 66 67 } // end namespace llvm 68 69 #endif 70
