1 //====- VEMCExpr.h - VE 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 // This file describes VE-specific MCExprs, used for modifiers like
10 // "%hi" or "%lo" etc.,
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_VE_MCTARGETDESC_VEMCEXPR_H
15 #define LLVM_LIB_TARGET_VE_MCTARGETDESC_VEMCEXPR_H
16 
17 #include "VEFixupKinds.h"
18 #include "llvm/MC/MCExpr.h"
19 
20 namespace llvm {
21 
22 class StringRef;
23 class VEMCExpr : public MCTargetExpr {
24 public:
25   enum VariantKind {
26     VK_VE_None,
27     VK_VE_REFLONG,
28     VK_VE_HI32,
29     VK_VE_LO32,
30     VK_VE_PC_HI32,
31     VK_VE_PC_LO32,
32     VK_VE_GOT_HI32,
33     VK_VE_GOT_LO32,
34     VK_VE_GOTOFF_HI32,
35     VK_VE_GOTOFF_LO32,
36     VK_VE_PLT_HI32,
37     VK_VE_PLT_LO32,
38     VK_VE_TLS_GD_HI32,
39     VK_VE_TLS_GD_LO32,
40     VK_VE_TPOFF_HI32,
41     VK_VE_TPOFF_LO32,
42   };
43 
44 private:
45   const VariantKind Kind;
46   const MCExpr *Expr;
47 
48   explicit VEMCExpr(VariantKind Kind, const MCExpr *Expr)
49       : Kind(Kind), Expr(Expr) {}
50 
51 public:
52   /// @name Construction
53   /// @{
54 
55   static const VEMCExpr *create(VariantKind Kind, const MCExpr *Expr,
56                                 MCContext &Ctx);
57   /// @}
58   /// @name Accessors
59   /// @{
60 
61   /// getOpcode - Get the kind of this expression.
62   VariantKind getKind() const { return Kind; }
63 
64   /// getSubExpr - Get the child of this expression.
65   const MCExpr *getSubExpr() const { return Expr; }
66 
67   /// getFixupKind - Get the fixup kind of this expression.
68   VE::Fixups getFixupKind() const { return getFixupKind(Kind); }
69 
70   /// @}
71   void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
72   bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout,
73                                  const MCFixup *Fixup) const override;
74   void visitUsedExpr(MCStreamer &Streamer) const override;
75   MCFragment *findAssociatedFragment() const override {
76     return getSubExpr()->findAssociatedFragment();
77   }
78 
79   void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override;
80 
81   static bool classof(const MCExpr *E) {
82     return E->getKind() == MCExpr::Target;
83   }
84 
85   static VariantKind parseVariantKind(StringRef name);
86   static bool printVariantKind(raw_ostream &OS, VariantKind Kind);
87   static void printVariantKindSuffix(raw_ostream &OS, VariantKind Kind);
88   static VE::Fixups getFixupKind(VariantKind Kind);
89 };
90 
91 } // namespace llvm
92 
93 #endif
94