Don't repeat names in comments and don't indent in namespaces. NFC.

[oota-llvm.git] / include / llvm / MC / MCSectionELF.h

diff --git a/include/llvm/MC/MCSectionELF.h b/include/llvm/MC/MCSectionELF.h
index 329c75cb1d7d9479d0f0dcd906cc0f5f7036d0e0..38740612edd9731b28e190dc361aac3ee03d51cf 100644 (file)
--- a/include/llvm/MC/MCSectionELF.h
+++ b/include/llvm/MC/MCSectionELF.h
@@ -14,72 +14,81 @@
 #ifndef LLVM_MC_MCSECTIONELF_H
 #define LLVM_MC_MCSECTIONELF_H
 
-#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Twine.h"
 #include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCSymbolELF.h"
+#include "llvm/Support/Debug.h"
 #include "llvm/Support/ELF.h"
+#include "llvm/Support/raw_ostream.h"
 
 namespace llvm {
 
 class MCSymbol;
 
-/// MCSectionELF - This represents a section on linux, lots of unix variants
-/// and some bare metal systems.
-class MCSectionELF : public MCSection {
-  /// SectionName - This is the name of the section.  The referenced memory is
-  /// owned by TargetLoweringObjectFileELF's ELFUniqueMap.
+/// This represents a section on linux, lots of unix variants and some bare
+/// metal systems.
+class MCSectionELF final : public MCSection {
+  /// This is the name of the section.  The referenced memory is owned by
+  /// TargetLoweringObjectFileELF's ELFUniqueMap.
   StringRef SectionName;
 
-  /// Type - This is the sh_type field of a section, drawn from the enums below.
+  /// This is the sh_type field of a section, drawn from the enums below.
   unsigned Type;
 
-  /// Flags - This is the sh_flags field of a section, drawn from the enums.
-  /// below.
+  /// This is the sh_flags field of a section, drawn from the enums below.
   unsigned Flags;
 
-  /// EntrySize - The size of each entry in this section. This size only
-  /// makes sense for sections that contain fixed-sized entries. If a
-  /// section does not contain fixed-sized entries 'EntrySize' will be 0.
+  unsigned UniqueID;
+
+  /// The size of each entry in this section. This size only makes sense for
+  /// sections that contain fixed-sized entries. If a section does not contain
+  /// fixed-sized entries 'EntrySize' will be 0.
   unsigned EntrySize;
 
-  const MCSymbol *Group;
+  const MCSymbolELF *Group;
+
+  /// Depending on the type of the section this is sh_link or sh_info.
+  const MCSectionELF *Associated;
 
 private:
   friend class MCContext;
-  MCSectionELF(StringRef Section, unsigned type, unsigned flags,
-               SectionKind K, unsigned entrySize, const MCSymbol *group)
-    : MCSection(SV_ELF, K), SectionName(Section), Type(type), Flags(flags),
-      EntrySize(entrySize), Group(group) {}
-  ~MCSectionELF();
-public:
+  MCSectionELF(StringRef Section, unsigned type, unsigned flags, SectionKind K,
+               unsigned entrySize, const MCSymbolELF *group, unsigned UniqueID,
+               MCSymbol *Begin, const MCSectionELF *Associated)
+      : MCSection(SV_ELF, K, Begin), SectionName(Section), Type(type),
+        Flags(flags), UniqueID(UniqueID), EntrySize(entrySize), Group(group),
+        Associated(Associated) {
+    if (Group)
+      Group->setIsSignature();
+  }
+  ~MCSectionELF() override;
+
+  void setSectionName(StringRef Name) { SectionName = Name; }
 
-  /// ShouldOmitSectionDirective - Decides whether a '.section' directive
-  /// should be printed before the section name
+public:
+  /// Decides whether a '.section' directive should be printed before the
+  /// section name
   bool ShouldOmitSectionDirective(StringRef Name, const MCAsmInfo &MAI) const;
 
   StringRef getSectionName() const { return SectionName; }
   unsigned getType() const { return Type; }
   unsigned getFlags() const { return Flags; }
   unsigned getEntrySize() const { return EntrySize; }
-  const MCSymbol *getGroup() const { return Group; }
+  const MCSymbolELF *getGroup() const { return Group; }
 
-  void PrintSwitchToSection(const MCAsmInfo &MAI,
-                            raw_ostream &OS) const;
-  virtual bool UseCodeAlign() const;
-  virtual bool isVirtualSection() const;
+  void PrintSwitchToSection(const MCAsmInfo &MAI, raw_ostream &OS,
+                            const MCExpr *Subsection) const override;
+  bool UseCodeAlign() const override;
+  bool isVirtualSection() const override;
 
-  /// isBaseAddressKnownZero - We know that non-allocatable sections (like
-  /// debug info) have a base of zero.
-  virtual bool isBaseAddressKnownZero() const {
-    return (getFlags() & ELF::SHF_ALLOC) == 0;
-  }
+  bool isUnique() const { return UniqueID != ~0U; }
+  unsigned getUniqueID() const { return UniqueID; }
+
+  const MCSectionELF *getAssociatedSection() const { return Associated; }
 
   static bool classof(const MCSection *S) {
     return S->getVariant() == SV_ELF;
   }
-
-  // Return the entry size for sections with fixed-width data.
-  static unsigned DetermineEntrySize(SectionKind Kind);
-
 };
 
 } // end namespace llvm