aboutsummaryrefslogtreecommitdiffstats
path: root/include/llvm/MC/MCInstrAnalysis.h
blob: acad6336aca736bd8b547f79b1787edde59c8136 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
//===-- llvm/MC/MCInstrAnalysis.h - InstrDesc target hooks ------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the MCInstrAnalysis class which the MCTargetDescs can
// derive from to give additional information to MC.
//
//===----------------------------------------------------------------------===//

#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstrDesc.h"
#include "llvm/MC/MCInstrInfo.h"

namespace llvm {

class MCInstrAnalysis {
protected:
  friend class Target;
  const MCInstrInfo *Info;

public:
  MCInstrAnalysis(const MCInstrInfo *Info) : Info(Info) {}

  virtual ~MCInstrAnalysis() {}

  virtual bool isBranch(const MCInst &Inst) const {
    return Info->get(Inst.getOpcode()).isBranch();
  }

  virtual bool isConditionalBranch(const MCInst &Inst) const {
    return Info->get(Inst.getOpcode()).isConditionalBranch();
  }

  virtual bool isUnconditionalBranch(const MCInst &Inst) const {
    return Info->get(Inst.getOpcode()).isUnconditionalBranch();
  }

  virtual bool isIndirectBranch(const MCInst &Inst) const {
    return Info->get(Inst.getOpcode()).isIndirectBranch();
  }

  virtual bool isCall(const MCInst &Inst) const {
    return Info->get(Inst.getOpcode()).isCall();
  }

  virtual bool isReturn(const MCInst &Inst) const {
    return Info->get(Inst.getOpcode()).isReturn();
  }

  /// evaluateBranch - Given a branch instruction try to get the address the
  /// branch targets. Otherwise return -1.
  virtual uint64_t
  evaluateBranch(const MCInst &Inst, uint64_t Addr, uint64_t Size) const;
};

}