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      1 //===-- MipsMCSymbolRefExpr.h - Mips specific MCSymbolRefExpr class -------===//
      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 #ifndef MIPSMCSYMBOLREFEXPR_H
     11 #define MIPSMCSYMBOLREFEXPR_H
     12 #include "llvm/MC/MCExpr.h"
     13 
     14 namespace llvm {
     15 
     16 class MipsMCSymbolRefExpr : public MCTargetExpr {
     17 public:
     18   enum VariantKind {
     19     VK_Mips_None,
     20     VK_Mips_GPREL,
     21     VK_Mips_GOT_CALL,
     22     VK_Mips_GOT,
     23     VK_Mips_ABS_HI,
     24     VK_Mips_ABS_LO,
     25     VK_Mips_TLSGD,
     26     VK_Mips_GOTTPREL,
     27     VK_Mips_TPREL_HI,
     28     VK_Mips_TPREL_LO,
     29     VK_Mips_GPOFF_HI,
     30     VK_Mips_GPOFF_LO,
     31     VK_Mips_GOT_DISP,
     32     VK_Mips_GOT_PAGE,
     33     VK_Mips_GOT_OFST
     34   };
     35 
     36 private:
     37   const VariantKind Kind;
     38   const MCSymbol *Symbol;
     39   int Offset;
     40 
     41   explicit MipsMCSymbolRefExpr(VariantKind _Kind, const MCSymbol *_Symbol,
     42                                int _Offset)
     43     : Kind(_Kind), Symbol(_Symbol), Offset(_Offset) {}
     44 
     45 public:
     46   static const MipsMCSymbolRefExpr *Create(VariantKind Kind,
     47                                            const MCSymbol *Symbol, int Offset,
     48                                            MCContext &Ctx);
     49 
     50   void PrintImpl(raw_ostream &OS) const;
     51   bool EvaluateAsRelocatableImpl(MCValue &Res,
     52                                  const MCAsmLayout *Layout) const;
     53   void AddValueSymbols(MCAssembler *) const;
     54   const MCSection *FindAssociatedSection() const;
     55 
     56   static bool classof(const MCExpr *E) {
     57     return E->getKind() == MCExpr::Target;
     58   }
     59 
     60   static bool classof(const MipsMCSymbolRefExpr *) { return true; }
     61 
     62   int getOffset() const { return Offset; }
     63   void setOffset(int O) { Offset = O; }
     64 };
     65 } // end namespace llvm
     66 
     67 #endif
     68