move elf section uniquing to MCContext. Along the way

merge XCore's section into MCSectionELF


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100812 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 17 insertions, 26 deletions

diff --git a/include/llvm/MC/MCSectionELF.h b/include/llvm/MC/MCSectionELF.h
index e550cd2c11..7054668eb1 100644
--- a/include/llvm/MC/MCSectionELF.h
+++ b/include/llvm/MC/MCSectionELF.h
@@ -36,16 +36,14 @@ class MCSectionELF : public MCSection {
   /// explicit section specified.
   bool IsExplicit;
   
-protected:
+private:
+  friend class MCContext;
   MCSectionELF(StringRef Section, unsigned type, unsigned flags,
                SectionKind K, bool isExplicit)
     : MCSection(K), SectionName(Section), Type(type), Flags(flags), 
       IsExplicit(isExplicit) {}
+  ~MCSectionELF();
 public:
-  
-  static MCSectionELF *Create(StringRef Section, unsigned Type, 
-                              unsigned Flags, SectionKind K, bool isExplicit,
-                              MCContext &Ctx);
 
   /// ShouldOmitSectionDirective - Decides whether a '.section' directive
   /// should be printed before the section name
@@ -153,40 +151,33 @@ public:
 
     // This section holds Thread-Local Storage.
     SHF_TLS              = 0x400U,
+
+    
+    // Start of target-specific flags.
+
+    /// XCORE_SHF_CP_SECTION - All sections with the "c" flag are grouped
+    /// together by the linker to form the constant pool and the cp register is
+    /// set to the start of the constant pool by the boot code.
+    XCORE_SHF_CP_SECTION = 0x800U,
     
-    /// FIRST_TARGET_DEP_FLAG - This is the first flag that subclasses are
-    /// allowed to specify.
-    FIRST_TARGET_DEP_FLAG = 0x800U,
-
-    /// TARGET_INDEP_SHF - This is the bitmask for all the target independent
-    /// section flags.  Targets can define their own target flags above these.
-    /// If they do that, they should implement their own MCSectionELF subclasses
-    /// and implement the virtual method hooks below to handle printing needs.
-    TARGET_INDEP_SHF     = FIRST_TARGET_DEP_FLAG-1U
+    /// XCORE_SHF_DP_SECTION - All sections with the "d" flag are grouped
+    /// together by the linker to form the data section and the dp register is
+    /// set to the start of the section by the boot code.
+    XCORE_SHF_DP_SECTION = 0x1000U
   };
 
   StringRef getSectionName() const { return SectionName; }
   unsigned getType() const { return Type; }
   unsigned getFlags() const { return Flags; }
   
-  virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
-                                    raw_ostream &OS) const;
+  void PrintSwitchToSection(const MCAsmInfo &MAI,
+                            raw_ostream &OS) const;
   
   /// isBaseAddressKnownZero - We know that non-allocatable sections (like
   /// debug info) have a base of zero.
   virtual bool isBaseAddressKnownZero() const {
     return (getFlags() & SHF_ALLOC) == 0;
   }
-  
-  /// PrintTargetSpecificSectionFlags - Targets that define their own
-  /// MCSectionELF subclasses with target specific section flags should
-  /// implement this method if they end up adding letters to the attributes
-  /// list.
-  virtual void PrintTargetSpecificSectionFlags(const MCAsmInfo &MAI,
-                                               raw_ostream &OS) const {
-  }
-                                               
-  
 };
 
 } // end namespace llvm