src/llvm/include/llvm/MC/MCInstrAnalysis.h

   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 #ifndef LLVM_MC_MCINSTRANALYSIS_H
  16 #define LLVM_MC_MCINSTRANALYSIS_H
  17
  18 #include "llvm/MC/MCInst.h"
  19 #include "llvm/MC/MCInstrDesc.h"
  20 #include "llvm/MC/MCInstrInfo.h"
  21
  22 namespace llvm {
  23
  24 class MCInstrAnalysis {
  25 protected:
  26   friend class Target;
  27   const MCInstrInfo *Info;
  28
  29 public:
  30   MCInstrAnalysis(const MCInstrInfo *Info) : Info(Info) {}
  31
  32   virtual ~MCInstrAnalysis() {}
  33
  34   virtual bool isBranch(const MCInst &Inst) const {
  35     return Info->get(Inst.getOpcode()).isBranch();
  36   }
  37
  38   virtual bool isConditionalBranch(const MCInst &Inst) const {
  39     return Info->get(Inst.getOpcode()).isConditionalBranch();
  40   }
  41
  42   virtual bool isUnconditionalBranch(const MCInst &Inst) const {
  43     return Info->get(Inst.getOpcode()).isUnconditionalBranch();
  44   }
  45
  46   virtual bool isIndirectBranch(const MCInst &Inst) const {
  47     return Info->get(Inst.getOpcode()).isIndirectBranch();
  48   }
  49
  50   virtual bool isCall(const MCInst &Inst) const {
  51     return Info->get(Inst.getOpcode()).isCall();
  52   }
  53
  54   virtual bool isReturn(const MCInst &Inst) const {
  55     return Info->get(Inst.getOpcode()).isReturn();
  56   }
  57
  58   virtual bool isTerminator(const MCInst &Inst) const {
  59     return Info->get(Inst.getOpcode()).isTerminator();
  60   }
  61
  62   /// evaluateBranch - Given a branch instruction try to get the address the
  63   /// branch targets. Return true on success, and the address in Target.
  64   virtual bool
  65   evaluateBranch(const MCInst &Inst, uint64_t Addr, uint64_t Size,
  66                  uint64_t &Target) const;
  67 };
  68
  69 } // End llvm namespace
  70
  71 #endif