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 LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H 11 #define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_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_HIGH, 27 VK_PPC_HIGHA, 28 VK_PPC_HIGHER, 29 VK_PPC_HIGHERA, 30 VK_PPC_HIGHEST, 31 VK_PPC_HIGHESTA 32 }; 33 34 private: 35 const VariantKind Kind; 36 const MCExpr *Expr; 37 bool IsDarwin; 38 39 int64_t evaluateAsInt64(int64_t Value) const; 40 PPCMCExpr(VariantKind Kind,const MCExpr * Expr,bool IsDarwin)41 explicit PPCMCExpr(VariantKind Kind, const MCExpr *Expr, bool IsDarwin) 42 : Kind(Kind), Expr(Expr), IsDarwin(IsDarwin) {} 43 44 public: 45 /// @name Construction 46 /// @{ 47 48 static const PPCMCExpr *create(VariantKind Kind, const MCExpr *Expr, 49 bool isDarwin, MCContext &Ctx); 50 createLo(const MCExpr * Expr,bool isDarwin,MCContext & Ctx)51 static const PPCMCExpr *createLo(const MCExpr *Expr, 52 bool isDarwin, MCContext &Ctx) { 53 return create(VK_PPC_LO, Expr, isDarwin, Ctx); 54 } 55 createHi(const MCExpr * Expr,bool isDarwin,MCContext & Ctx)56 static const PPCMCExpr *createHi(const MCExpr *Expr, 57 bool isDarwin, MCContext &Ctx) { 58 return create(VK_PPC_HI, Expr, isDarwin, Ctx); 59 } 60 createHa(const MCExpr * Expr,bool isDarwin,MCContext & Ctx)61 static const PPCMCExpr *createHa(const MCExpr *Expr, 62 bool isDarwin, MCContext &Ctx) { 63 return create(VK_PPC_HA, Expr, isDarwin, Ctx); 64 } 65 66 /// @} 67 /// @name Accessors 68 /// @{ 69 70 /// getOpcode - Get the kind of this expression. getKind()71 VariantKind getKind() const { return Kind; } 72 73 /// getSubExpr - Get the child of this expression. getSubExpr()74 const MCExpr *getSubExpr() const { return Expr; } 75 76 /// isDarwinSyntax - True if expression is to be printed using Darwin syntax. isDarwinSyntax()77 bool isDarwinSyntax() const { return IsDarwin; } 78 79 80 /// @} 81 82 void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override; 83 bool evaluateAsRelocatableImpl(MCValue &Res, 84 const MCAsmLayout *Layout, 85 const MCFixup *Fixup) const override; 86 void visitUsedExpr(MCStreamer &Streamer) const override; findAssociatedFragment()87 MCFragment *findAssociatedFragment() const override { 88 return getSubExpr()->findAssociatedFragment(); 89 } 90 91 // There are no TLS PPCMCExprs at the moment. fixELFSymbolsInTLSFixups(MCAssembler & Asm)92 void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {} 93 94 bool evaluateAsConstant(int64_t &Res) const; 95 classof(const MCExpr * E)96 static bool classof(const MCExpr *E) { 97 return E->getKind() == MCExpr::Target; 98 } 99 }; 100 } // end namespace llvm 101 102 #endif 103