Disassembler.h revision 221345 
1//===------------- Disassembler.h - LLVM Disassembler -----------*- 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 interface for the Disassembly library's disassembler
11// context.  The disassembler is responsible for producing strings for
12// individual instructions according to a given architecture and disassembly
13// syntax.
14//
15//===----------------------------------------------------------------------===//
16
17#ifndef LLVM_MC_DISASSEMBLER_H
18#define LLVM_MC_DISASSEMBLER_H
19
20#include "llvm-c/Disassembler.h"
21#include <string>
22#include "llvm/ADT/OwningPtr.h"
23
24namespace llvm {
25class TargetAsmInfo;
26class MCContext;
27class MCAsmInfo;
28class MCDisassembler;
29class MCInstPrinter;
30class Target;
31class TargetMachine;
32
33//
34// This is the disassembler context returned by LLVMCreateDisasm().
35//
36class LLVMDisasmContext {
37private:
38  //
39  // The passed parameters when the disassembler context is created.
40  //
41  // The TripleName for this disassembler.
42  std::string TripleName;
43  // The pointer to the caller's block of symbolic information.
44  void *DisInfo;
45  // The Triple specific symbolic information type returned by GetOpInfo.
46  int TagType;
47  // The function to get the symbolic information for operands.
48  LLVMOpInfoCallback GetOpInfo;
49  // The function to look up a symbol name.
50  LLVMSymbolLookupCallback SymbolLookUp;
51  //
52  // The objects created and saved by LLVMCreateDisasm() then used by
53  // LLVMDisasmInstruction().
54  //
55  // The LLVM target corresponding to the disassembler.
56  // FIXME: using llvm::OwningPtr<const llvm::Target> causes a malloc error
57  //        when this LLVMDisasmContext is deleted.
58  const Target *TheTarget;
59  // The assembly information for the target architecture.
60  llvm::OwningPtr<const llvm::MCAsmInfo> MAI;
61  // The target machine instance.
62  llvm::OwningPtr<llvm::TargetMachine> TM;
63  // The disassembler for the target architecture.
64  // FIXME: using llvm::OwningPtr<const llvm::TargetAsmInfo> causes a malloc
65  //        error when this LLVMDisasmContext is deleted.
66  const TargetAsmInfo *Tai;
67  // The assembly context for creating symbols and MCExprs.
68  llvm::OwningPtr<const llvm::MCContext> Ctx;
69  // The disassembler for the target architecture.
70  llvm::OwningPtr<const llvm::MCDisassembler> DisAsm;
71  // The instruction printer for the target architecture.
72  llvm::OwningPtr<llvm::MCInstPrinter> IP;
73
74public:
75  LLVMDisasmContext(std::string tripleName, void *disInfo, int tagType,
76                    LLVMOpInfoCallback getOpInfo,
77                    LLVMSymbolLookupCallback symbolLookUp,
78                    const Target *theTarget, const MCAsmInfo *mAI,
79                    llvm::TargetMachine *tM, const TargetAsmInfo *tai,
80                    llvm::MCContext *ctx, const MCDisassembler *disAsm,
81                    MCInstPrinter *iP) : TripleName(tripleName),
82                    DisInfo(disInfo), TagType(tagType), GetOpInfo(getOpInfo),
83                    SymbolLookUp(symbolLookUp), TheTarget(theTarget), Tai(tai) {
84    TM.reset(tM);
85    MAI.reset(mAI);
86    Ctx.reset(ctx);
87    DisAsm.reset(disAsm);
88    IP.reset(iP);
89  }
90  const MCDisassembler *getDisAsm() const { return DisAsm.get(); }
91  MCInstPrinter *getIP() { return IP.get(); }
92};
93
94} // namespace llvm
95
96#endif
97