X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FMC%2FMCObjectWriter.h;h=14fe75fd4c3104ad835d0dccc5f2f1a490488a71;hb=9ba9d4d76bfa8de2b05cbce02a5a3ff7d46cb331;hp=d4fab0ea477f25c6ca0abbed002d2b2e49006f32;hpb=53b2338a1d061ad15a858ff0d641431f4d4ac101;p=oota-llvm.git

diff --git a/include/llvm/MC/MCObjectWriter.h b/include/llvm/MC/MCObjectWriter.h
index d4fab0ea477..14fe75fd4c3 100644
--- a/include/llvm/MC/MCObjectWriter.h
+++ b/include/llvm/MC/MCObjectWriter.h
@@ -11,15 +11,18 @@
 #define LLVM_MC_MCOBJECTWRITER_H
 
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/DataTypes.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/DataTypes.h"
 #include <cassert>
 
 namespace llvm {
-class MCAsmFixup;
+class MCAsmLayout;
 class MCAssembler;
-class MCDataFragment;
+class MCFixup;
+class MCFragment;
+class MCSymbolData;
+class MCSymbolRefExpr;
 class MCValue;
-class raw_ostream;
 
 /// MCObjectWriter - Defines the object file and target independent interfaces
 /// used by the assembler backend to write native file format object files.
@@ -33,8 +36,8 @@ class raw_ostream;
 /// The object writer also contains a number of helper methods for writing
 /// binary data to the output stream.
 class MCObjectWriter {
-  MCObjectWriter(const MCObjectWriter &); // DO NOT IMPLEMENT
-  void operator=(const MCObjectWriter &); // DO NOT IMPLEMENT
+  MCObjectWriter(const MCObjectWriter &) LLVM_DELETED_FUNCTION;
+  void operator=(const MCObjectWriter &) LLVM_DELETED_FUNCTION;
 
 protected:
   raw_ostream &OS;
@@ -48,7 +51,7 @@ protected: // Can only create subclasses.
 public:
   virtual ~MCObjectWriter();
 
-  bool isLittleEndian() { return IsLittleEndian; }
+  bool isLittleEndian() const { return IsLittleEndian; }
 
   raw_ostream &getStream() { return OS; }
 
@@ -60,7 +63,8 @@ public:
   ///
   /// This routine is called by the assembler after layout and relaxation is
   /// complete.
-  virtual void ExecutePostLayoutBinding(MCAssembler &Asm) = 0;
+  virtual void ExecutePostLayoutBinding(MCAssembler &Asm,
+                                        const MCAsmLayout &Layout) = 0;
 
   /// Record a relocation entry.
   ///
@@ -69,16 +73,37 @@ public:
   /// information about the relocation so that it can be emitted during
   /// WriteObject().
   virtual void RecordRelocation(const MCAssembler &Asm,
-                                const MCDataFragment &Fragment,
-                                const MCAsmFixup &Fixup, MCValue Target,
+                                const MCAsmLayout &Layout,
+                                const MCFragment *Fragment,
+                                const MCFixup &Fixup, MCValue Target,
                                 uint64_t &FixedValue) = 0;
 
+  /// \brief Check whether the difference (A - B) between two symbol
+  /// references is fully resolved.
+  ///
+  /// Clients are not required to answer precisely and may conservatively return
+  /// false, even when a difference is fully resolved.
+  bool
+  IsSymbolRefDifferenceFullyResolved(const MCAssembler &Asm,
+                                     const MCSymbolRefExpr *A,
+                                     const MCSymbolRefExpr *B,
+                                     bool InSet) const;
+
+  virtual bool
+  IsSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
+                                         const MCSymbolData &DataA,
+                                         const MCFragment &FB,
+                                         bool InSet,
+                                         bool IsPCRel) const;
+
+
   /// Write the object file.
   ///
   /// This routine is called by the assembler after layout and relaxation is
-  /// complete, fixups have been evaluate and applied, and relocations
+  /// complete, fixups have been evaluated and applied, and relocations
   /// generated.
-  virtual void WriteObject(const MCAssembler &Asm) = 0;
+  virtual void WriteObject(MCAssembler &Asm,
+                           const MCAsmLayout &Layout) = 0;
 
   /// @}
   /// @name Binary Output
@@ -149,12 +174,15 @@ public:
   }
 
   void WriteBytes(StringRef Str, unsigned ZeroFillSize = 0) {
+    assert((ZeroFillSize == 0 || Str.size () <= ZeroFillSize) &&
+      "data size greater than fill size, unexpected large write will occur");
     OS << Str;
     if (ZeroFillSize)
       WriteZeros(ZeroFillSize - Str.size());
   }
 
   /// @}
+
 };
 
 } // End llvm namespace