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
70