ELF entry size support.

Some ELF sections contain fixed-sized entries. Provide a way to record
the entry size of a section.

llvm-svn: 111169

llvm/include/llvm/MC/MCContext.h

@@ -129,7 +129,8 @@ namespace llvm {
     
     const MCSection *getELFSection(StringRef Section, unsigned Type,
                                    unsigned Flags, SectionKind Kind,
-                                   bool IsExplicit = false);
+                                   bool IsExplicit = false,
+                                   unsigned EntrySize = 0);
 
     const MCSection *getCOFFSection(StringRef Section, unsigned Characteristics,
                                     int Selection, SectionKind Kind);

llvm/include/llvm/MC/MCSectionELF.h

@@ -35,6 +35,11 @@ class MCSectionELF : public MCSection {
   /// IsExplicit - Indicates that this section comes from globals with an
   /// explicit section specified.
   bool IsExplicit;
+
+  /// 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 EntrySize;
   
 private:
   friend class MCContext;