1 //===-- PPCMCExpr.h - PPC specific MC expression classes --------*- C++ -*-===// 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 PPCMCEXPR_H 11 #define PPCMCEXPR_H 12 13 #include "llvm/MC/MCAsmLayout.h" 14 #include "llvm/MC/MCExpr.h" 15 #include "llvm/MC/MCValue.h" 16 17 namespace llvm { 18 19 class PPCMCExpr : public MCTargetExpr { 20 public: 21 enum VariantKind { 22 VK_PPC_None, 23 VK_PPC_LO, 24 VK_PPC_HI, 25 VK_PPC_HA, 26 VK_PPC_HIGHER, 27 VK_PPC_HIGHERA, 28 VK_PPC_HIGHEST, 29 VK_PPC_HIGHESTA 30 }; 31 32 private: 33 const VariantKind Kind; 34 const MCExpr *Expr; 35 bool IsDarwin; 36 37 explicit PPCMCExpr(VariantKind _Kind, const MCExpr *_Expr, 38 bool _IsDarwin) 39 : Kind(_Kind), Expr(_Expr), IsDarwin(_IsDarwin) {} 40 41 public: 42 /// @name Construction 43 /// @{ 44 45 static const PPCMCExpr *Create(VariantKind Kind, const MCExpr *Expr, 46 bool isDarwin, MCContext &Ctx); 47 48 static const PPCMCExpr *CreateLo(const MCExpr *Expr, 49 bool isDarwin, MCContext &Ctx) { 50 return Create(VK_PPC_LO, Expr, isDarwin, Ctx); 51 } 52 53 static const PPCMCExpr *CreateHi(const MCExpr *Expr, 54 bool isDarwin, MCContext &Ctx) { 55 return Create(VK_PPC_HI, Expr, isDarwin, Ctx); 56 } 57 58 static const PPCMCExpr *CreateHa(const MCExpr *Expr, 59 bool isDarwin, MCContext &Ctx) { 60 return Create(VK_PPC_HA, Expr, isDarwin, Ctx); 61 } 62 63 /// @} 64 /// @name Accessors 65 /// @{ 66 67 /// getOpcode - Get the kind of this expression. 68 VariantKind getKind() const { return Kind; } 69 70 /// getSubExpr - Get the child of this expression. 71 const MCExpr *getSubExpr() const { return Expr; } 72 73 /// isDarwinSyntax - True if expression is to be printed using Darwin syntax. 74 bool isDarwinSyntax() const { return IsDarwin; } 75 76 77 /// @} 78 79 void PrintImpl(raw_ostream &OS) const override; 80 bool EvaluateAsRelocatableImpl(MCValue &Res, 81 const MCAsmLayout *Layout) const override; 82 void visitUsedExpr(MCStreamer &Streamer) const override; 83 const MCSection *FindAssociatedSection() const override { 84 return getSubExpr()->FindAssociatedSection(); 85 } 86 87 // There are no TLS PPCMCExprs at the moment. 88 void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {} 89 90 static bool classof(const MCExpr *E) { 91 return E->getKind() == MCExpr::Target; 92 } 93 }; 94 } // end namespace llvm 95 96 #endif 97
