llvm/lib/Target/CSKY/MCTargetDesc/CSKYMCExpr.h

   1 //===-- CSKYMCExpr.h - CSKY 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_LANAI_MCTARGETDESC_LANAIMCEXPR_H
  10 #define LLVM_LIB_TARGET_LANAI_MCTARGETDESC_LANAIMCEXPR_H
  11
  12 #include "llvm/MC/MCExpr.h"
  13 #include "llvm/MC/MCValue.h"
  14
  15 namespace llvm {
  16
  17 class CSKYMCExpr : public MCTargetExpr {
  18 public:
  19   enum VariantKind {
  20     VK_CSKY_None,
  21     VK_CSKY_ADDR,
  22     VK_CSKY_PCREL,
  23     VK_CSKY_GOT,
  24     VK_CSKY_GOTPC,
  25     VK_CSKY_GOTOFF,
  26     VK_CSKY_PLT,
  27     VK_CSKY_TPOFF,
  28     VK_CSKY_TLSGD,
  29     VK_CSKY_Invalid
  30   };
  31
  32 private:
  33   const VariantKind Kind;
  34   const MCExpr *Expr;
  35
  36   explicit CSKYMCExpr(VariantKind Kind, const MCExpr *Expr)
  37       : Kind(Kind), Expr(Expr) {}
  38
  39 public:
  40   static const CSKYMCExpr *create(const MCExpr *Expr, VariantKind Kind,
  41                                   MCContext &Ctx);
  42
  43   // Returns the kind of this expression.
  44   VariantKind getKind() const { return Kind; }
  45
  46   // Returns the child of this expression.
  47   const MCExpr *getSubExpr() const { return Expr; }
  48
  49   void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
  50
  51   bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout,
  52                                  const MCFixup *Fixup) const override;
  53   void visitUsedExpr(MCStreamer &Streamer) const override;
  54
  55   MCFragment *findAssociatedFragment() const override {
  56     return getSubExpr()->findAssociatedFragment();
  57   }
  58
  59   void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override;
  60
  61   static bool classof(const MCExpr *E) {
  62     return E->getKind() == MCExpr::Target;
  63   }
  64
  65   static StringRef getVariantKindName(VariantKind Kind);
  66 };
  67 } // end namespace llvm
  68
  69 #endif