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MCInstrAnalysis.h
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1 //===-- llvm/MC/MCInstrAnalysis.h - InstrDesc target hooks ------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file defines the MCInstrAnalysis class which the MCTargetDescs can
11 // derive from to give additional information to MC.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "llvm/MC/MCInst.h"
16 #include "llvm/MC/MCInstrDesc.h"
17 #include "llvm/MC/MCInstrInfo.h"
18 
19 namespace llvm {
20 
22 protected:
23  friend class Target;
24  const MCInstrInfo *Info;
25 
26 public:
27  MCInstrAnalysis(const MCInstrInfo *Info) : Info(Info) {}
28 
29  virtual ~MCInstrAnalysis() {}
30 
31  virtual bool isBranch(const MCInst &Inst) const {
32  return Info->get(Inst.getOpcode()).isBranch();
33  }
34 
35  virtual bool isConditionalBranch(const MCInst &Inst) const {
36  return Info->get(Inst.getOpcode()).isConditionalBranch();
37  }
38 
39  virtual bool isUnconditionalBranch(const MCInst &Inst) const {
40  return Info->get(Inst.getOpcode()).isUnconditionalBranch();
41  }
42 
43  virtual bool isIndirectBranch(const MCInst &Inst) const {
44  return Info->get(Inst.getOpcode()).isIndirectBranch();
45  }
46 
47  virtual bool isCall(const MCInst &Inst) const {
48  return Info->get(Inst.getOpcode()).isCall();
49  }
50 
51  virtual bool isReturn(const MCInst &Inst) const {
52  return Info->get(Inst.getOpcode()).isReturn();
53  }
54 
55  virtual bool isTerminator(const MCInst &Inst) const {
56  return Info->get(Inst.getOpcode()).isTerminator();
57  }
58 
59  /// evaluateBranch - Given a branch instruction try to get the address the
60  /// branch targets. Return true on success, and the address in Target.
61  virtual bool
62  evaluateBranch(const MCInst &Inst, uint64_t Addr, uint64_t Size,
63  uint64_t &Target) const;
64 };
65 
66 }
virtual bool isBranch(const MCInst &Inst) const
virtual bool isReturn(const MCInst &Inst) const
virtual bool isIndirectBranch(const MCInst &Inst) const
virtual bool isUnconditionalBranch(const MCInst &Inst) const
const MCInstrInfo * Info
virtual bool isCall(const MCInst &Inst) const
virtual bool evaluateBranch(const MCInst &Inst, uint64_t Addr, uint64_t Size, uint64_t &Target) const
virtual bool isTerminator(const MCInst &Inst) const
const MCInstrDesc & get(unsigned Opcode) const
Definition: MCInstrInfo.h:48
virtual bool isConditionalBranch(const MCInst &Inst) const
unsigned getOpcode() const
Definition: MCInst.h:158
MCInstrAnalysis(const MCInstrInfo *Info)