LLVM  12.0.0git
Go to the documentation of this file.
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 //===----------------------------------------------------------------------===//
12 #include "llvm/MC/MCAsmLayout.h"
13 #include "llvm/MC/MCExpr.h"
14 #include "llvm/MC/MCValue.h"
16 namespace llvm {
18 class MipsMCExpr : public MCTargetExpr {
19 public:
20  enum MipsExprKind {
48  };
50 private:
51  const MipsExprKind Kind;
52  const MCExpr *Expr;
54  explicit MipsMCExpr(MipsExprKind Kind, const MCExpr *Expr)
55  : Kind(Kind), Expr(Expr) {}
57 public:
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);
63  /// Get the kind of this expression.
64  MipsExprKind getKind() const { return Kind; }
66  /// Get the child of this expression.
67  const MCExpr *getSubExpr() const { return Expr; }
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;
74  MCFragment *findAssociatedFragment() const override {
76  }
78  void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override;
80  static bool classof(const MCExpr *E) {
81  return E->getKind() == MCExpr::Target;
82  }
84  bool isGpOff(MipsExprKind &Kind) const;
85  bool isGpOff() const {
86  MipsExprKind Kind;
87  return isGpOff(Kind);
88  }
89 };
91 } // end namespace llvm
bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout, const MCFixup *Fixup) const override
Definition: MipsMCExpr.cpp:133
This class represents lattice values for constants.
Definition: AllocatorList.h:23
This represents an "assembler immediate".
Definition: MCValue.h:37
bool isGpOff() const
Definition: MipsMCExpr.h:85
Encode information on a single operation to perform on a byte sequence (e.g., an encoded instruction)...
Definition: MCFixup.h:82
Target specific expression.
Definition: MCExpr.h:42
static bool classof(const MCExpr *E)
Definition: MipsMCExpr.h:80
Encapsulates the layout of an assembly file at a particular point in time.
Definition: MCAsmLayout.h:28
Base class for the full range of assembler expressions which are needed for parsing.
Definition: MCExpr.h:35
This is an extension point for target-specific MCExpr subclasses to implement.
Definition: MCExpr.h:644
Context object for machine code objects.
Definition: MCContext.h:67
MipsExprKind getKind() const
Get the kind of this expression.
Definition: MipsMCExpr.h:64
void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override
Definition: MipsMCExpr.cpp:250
void visitUsedExpr(MCStreamer &Streamer) const override
Definition: MipsMCExpr.cpp:220
This class is intended to be used as a base class for asm properties and features specific to the tar...
Definition: MCAsmInfo.h:56
Streaming machine code generation interface.
Definition: MCStreamer.h:196
static const MipsMCExpr * createGpOff(MipsExprKind Kind, const MCExpr *Expr, MCContext &Ctx)
Definition: MipsMCExpr.cpp:32
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override
Definition: MipsMCExpr.cpp:37
PowerPC TLS Dynamic Call Fixup
MCFragment * findAssociatedFragment() const override
Definition: MipsMCExpr.h:74
ExprKind getKind() const
Definition: MCExpr.h:81
MCFragment * findAssociatedFragment() const
Find the "associated section" for this expression, which is currently defined as the absolute section...
Definition: MCExpr.cpp:947
const MCExpr * getSubExpr() const
Get the child of this expression.
Definition: MipsMCExpr.h:67
static const MipsMCExpr * create(MipsExprKind Kind, const MCExpr *Expr, MCContext &Ctx)
Definition: MipsMCExpr.cpp:27
This class implements an extremely fast bulk output stream that can only output to a stream...
Definition: raw_ostream.h:46