1 //====- SparcMCExpr.h - Sparc 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 Sparc-specific MCExprs, used for modifiers like
10 // "%hi" or "%lo" etc.,
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_SPARC_MCTARGETDESC_SPARCMCEXPR_H
15 #define LLVM_LIB_TARGET_SPARC_MCTARGETDESC_SPARCMCEXPR_H
16 
17 #include "SparcFixupKinds.h"
18 #include "llvm/MC/MCExpr.h"
19 
20 namespace llvm {
21 
22 class StringRef;
23 class SparcMCExpr : public MCTargetExpr {
24 public:
25   enum VariantKind {
26     VK_Sparc_None,
27     VK_Sparc_LO,
28     VK_Sparc_HI,
29     VK_Sparc_H44,
30     VK_Sparc_M44,
31     VK_Sparc_L44,
32     VK_Sparc_HH,
33     VK_Sparc_HM,
34     VK_Sparc_PC22,
35     VK_Sparc_PC10,
36     VK_Sparc_GOT22,
37     VK_Sparc_GOT10,
38     VK_Sparc_GOT13,
39     VK_Sparc_13,
40     VK_Sparc_WPLT30,
41     VK_Sparc_R_DISP32,
42     VK_Sparc_TLS_GD_HI22,
43     VK_Sparc_TLS_GD_LO10,
44     VK_Sparc_TLS_GD_ADD,
45     VK_Sparc_TLS_GD_CALL,
46     VK_Sparc_TLS_LDM_HI22,
47     VK_Sparc_TLS_LDM_LO10,
48     VK_Sparc_TLS_LDM_ADD,
49     VK_Sparc_TLS_LDM_CALL,
50     VK_Sparc_TLS_LDO_HIX22,
51     VK_Sparc_TLS_LDO_LOX10,
52     VK_Sparc_TLS_LDO_ADD,
53     VK_Sparc_TLS_IE_HI22,
54     VK_Sparc_TLS_IE_LO10,
55     VK_Sparc_TLS_IE_LD,
56     VK_Sparc_TLS_IE_LDX,
57     VK_Sparc_TLS_IE_ADD,
58     VK_Sparc_TLS_LE_HIX22,
59     VK_Sparc_TLS_LE_LOX10
60   };
61 
62 private:
63   const VariantKind Kind;
64   const MCExpr *Expr;
65 
66   explicit SparcMCExpr(VariantKind Kind, const MCExpr *Expr)
67       : Kind(Kind), Expr(Expr) {}
68 
69 public:
70   /// @name Construction
71   /// @{
72 
73   static const SparcMCExpr *create(VariantKind Kind, const MCExpr *Expr,
74                                  MCContext &Ctx);
75   /// @}
76   /// @name Accessors
77   /// @{
78 
79   /// getOpcode - Get the kind of this expression.
80   VariantKind getKind() const { return Kind; }
81 
82   /// getSubExpr - Get the child of this expression.
83   const MCExpr *getSubExpr() const { return Expr; }
84 
85   /// getFixupKind - Get the fixup kind of this expression.
86   Sparc::Fixups getFixupKind() const { return getFixupKind(Kind); }
87 
88   /// @}
89   void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
90   bool evaluateAsRelocatableImpl(MCValue &Res,
91                                  const MCAsmLayout *Layout,
92                                  const MCFixup *Fixup) const override;
93   void visitUsedExpr(MCStreamer &Streamer) const override;
94   MCFragment *findAssociatedFragment() const override {
95     return getSubExpr()->findAssociatedFragment();
96   }
97 
98   void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override;
99 
100   static bool classof(const MCExpr *E) {
101     return E->getKind() == MCExpr::Target;
102   }
103 
104   static bool classof(const SparcMCExpr *) { return true; }
105 
106   static VariantKind parseVariantKind(StringRef name);
107   static bool printVariantKind(raw_ostream &OS, VariantKind Kind);
108   static Sparc::Fixups getFixupKind(VariantKind Kind);
109 };
110 
111 } // end namespace llvm.
112 
113 #endif
114