1 //===-- PPCMCExpr.h - PPC specific MC expression classes --------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H 10 #define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H 11 12 #include "llvm/MC/MCAsmLayout.h" 13 #include "llvm/MC/MCExpr.h" 14 #include "llvm/MC/MCValue.h" 15 16 namespace llvm { 17 18 class PPCMCExpr : public MCTargetExpr { 19 public: 20 enum VariantKind { 21 VK_PPC_None, 22 VK_PPC_LO, 23 VK_PPC_HI, 24 VK_PPC_HA, 25 VK_PPC_HIGH, 26 VK_PPC_HIGHA, 27 VK_PPC_HIGHER, 28 VK_PPC_HIGHERA, 29 VK_PPC_HIGHEST, 30 VK_PPC_HIGHESTA 31 }; 32 33 private: 34 const VariantKind Kind; 35 const MCExpr *Expr; 36 bool IsDarwin; 37 38 int64_t evaluateAsInt64(int64_t Value) const; 39 40 explicit PPCMCExpr(VariantKind Kind, const MCExpr *Expr, bool IsDarwin) 41 : Kind(Kind), Expr(Expr), IsDarwin(IsDarwin) {} 42 43 public: 44 /// @name Construction 45 /// @{ 46 47 static const PPCMCExpr *create(VariantKind Kind, const MCExpr *Expr, 48 bool isDarwin, MCContext &Ctx); 49 50 static const PPCMCExpr *createLo(const MCExpr *Expr, 51 bool isDarwin, MCContext &Ctx) { 52 return create(VK_PPC_LO, Expr, isDarwin, Ctx); 53 } 54 55 static const PPCMCExpr *createHi(const MCExpr *Expr, 56 bool isDarwin, MCContext &Ctx) { 57 return create(VK_PPC_HI, Expr, isDarwin, Ctx); 58 } 59 60 static const PPCMCExpr *createHa(const MCExpr *Expr, 61 bool isDarwin, MCContext &Ctx) { 62 return create(VK_PPC_HA, Expr, isDarwin, Ctx); 63 } 64 65 /// @} 66 /// @name Accessors 67 /// @{ 68 69 /// getOpcode - Get the kind of this expression. 70 VariantKind getKind() const { return Kind; } 71 72 /// getSubExpr - Get the child of this expression. 73 const MCExpr *getSubExpr() const { return Expr; } 74 75 /// isDarwinSyntax - True if expression is to be printed using Darwin syntax. 76 bool isDarwinSyntax() const { return IsDarwin; } 77 78 79 /// @} 80 81 void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override; 82 bool evaluateAsRelocatableImpl(MCValue &Res, 83 const MCAsmLayout *Layout, 84 const MCFixup *Fixup) const override; 85 void visitUsedExpr(MCStreamer &Streamer) const override; 86 MCFragment *findAssociatedFragment() const override { 87 return getSubExpr()->findAssociatedFragment(); 88 } 89 90 // There are no TLS PPCMCExprs at the moment. 91 void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {} 92 93 bool evaluateAsConstant(int64_t &Res) const; 94 95 static bool classof(const MCExpr *E) { 96 return E->getKind() == MCExpr::Target; 97 } 98 }; 99 } // end namespace llvm 100 101 #endif 102