1//===- MipsMCExpr.h - Mips 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_MIPS_MCTARGETDESC_MIPSMCEXPR_H
10#define LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSMCEXPR_H
11
12#include "llvm/MC/MCAsmLayout.h"
13#include "llvm/MC/MCExpr.h"
14#include "llvm/MC/MCValue.h"
15
16namespace llvm {
17
18class MipsMCExpr : public MCTargetExpr {
19public:
20  enum MipsExprKind {
21    MEK_None,
22    MEK_CALL_HI16,
23    MEK_CALL_LO16,
24    MEK_DTPREL,
25    MEK_DTPREL_HI,
26    MEK_DTPREL_LO,
27    MEK_GOT,
28    MEK_GOTTPREL,
29    MEK_GOT_CALL,
30    MEK_GOT_DISP,
31    MEK_GOT_HI16,
32    MEK_GOT_LO16,
33    MEK_GOT_OFST,
34    MEK_GOT_PAGE,
35    MEK_GPREL,
36    MEK_HI,
37    MEK_HIGHER,
38    MEK_HIGHEST,
39    MEK_LO,
40    MEK_NEG,
41    MEK_PCREL_HI16,
42    MEK_PCREL_LO16,
43    MEK_TLSGD,
44    MEK_TLSLDM,
45    MEK_TPREL_HI,
46    MEK_TPREL_LO,
47    MEK_Special,
48  };
49
50private:
51  const MipsExprKind Kind;
52  const MCExpr *Expr;
53
54  explicit MipsMCExpr(MipsExprKind Kind, const MCExpr *Expr)
55      : Kind(Kind), Expr(Expr) {}
56
57public:
58  static const MipsMCExpr *create(MipsExprKind Kind, const MCExpr *Expr,
59                                  MCContext &Ctx);
60  static const MipsMCExpr *createGpOff(MipsExprKind Kind, const MCExpr *Expr,
61                                       MCContext &Ctx);
62
63  /// Get the kind of this expression.
64  MipsExprKind getKind() const { return Kind; }
65
66  /// Get the child of this expression.
67  const MCExpr *getSubExpr() const { return Expr; }
68
69  void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
70  bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout,
71                                 const MCFixup *Fixup) const override;
72  void visitUsedExpr(MCStreamer &Streamer) const override;
73
74  MCFragment *findAssociatedFragment() const override {
75    return getSubExpr()->findAssociatedFragment();
76  }
77
78  void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override;
79
80  static bool classof(const MCExpr *E) {
81    return E->getKind() == MCExpr::Target;
82  }
83
84  bool isGpOff(MipsExprKind &Kind) const;
85  bool isGpOff() const {
86    MipsExprKind Kind;
87    return isGpOff(Kind);
88  }
89};
90
91} // end namespace llvm
92
93#endif // LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSMCEXPR_H
94