1 //===-- DisassemblerLLVMC.h -------------------------------------*- 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 #ifndef liblldb_DisassemblerLLVMC_h_
11 #define liblldb_DisassemblerLLVMC_h_
12 
13 #include <memory>
14 #include <mutex>
15 #include <string>
16 
17 #include "lldb/Core/Address.h"
18 #include "lldb/Core/Disassembler.h"
19 #include "lldb/Core/PluginManager.h"
20 
21 class InstructionLLVMC;
22 
23 class DisassemblerLLVMC : public lldb_private::Disassembler {
24 public:
25   DisassemblerLLVMC(const lldb_private::ArchSpec &arch,
26                     const char *flavor /* = NULL */);
27 
28   ~DisassemblerLLVMC() override;
29 
30   //------------------------------------------------------------------
31   // Static Functions
32   //------------------------------------------------------------------
33   static void Initialize();
34 
35   static void Terminate();
36 
37   static lldb_private::ConstString GetPluginNameStatic();
38 
39   static lldb_private::Disassembler *
40   CreateInstance(const lldb_private::ArchSpec &arch, const char *flavor);
41 
42   size_t DecodeInstructions(const lldb_private::Address &base_addr,
43                             const lldb_private::DataExtractor &data,
44                             lldb::offset_t data_offset, size_t num_instructions,
45                             bool append, bool data_from_file) override;
46 
47   //------------------------------------------------------------------
48   // PluginInterface protocol
49   //------------------------------------------------------------------
50   lldb_private::ConstString GetPluginName() override;
51 
52   uint32_t GetPluginVersion() override;
53 
54 protected:
55   friend class InstructionLLVMC;
56 
57   bool FlavorValidForArchSpec(const lldb_private::ArchSpec &arch,
58                               const char *flavor) override;
59 
60   bool IsValid() const;
61 
62   int OpInfo(uint64_t PC, uint64_t Offset, uint64_t Size, int TagType,
63              void *TagBug);
64 
65   const char *SymbolLookup(uint64_t ReferenceValue, uint64_t *ReferenceType,
66                            uint64_t ReferencePC, const char **ReferenceName);
67 
68   static int OpInfoCallback(void *DisInfo, uint64_t PC, uint64_t Offset,
69                             uint64_t Size, int TagType, void *TagBug);
70 
71   static const char *SymbolLookupCallback(void *DisInfo,
72                                           uint64_t ReferenceValue,
73                                           uint64_t *ReferenceType,
74                                           uint64_t ReferencePC,
75                                           const char **ReferenceName);
76 
77   const lldb_private::ExecutionContext *m_exe_ctx;
78   InstructionLLVMC *m_inst;
79   std::mutex m_mutex;
80   bool m_data_from_file;
81 
82   // Since we need to make two actual MC Disassemblers for ARM (ARM & THUMB),
83   // and there's a bit of goo to set up and own in the MC disassembler world,
84   // this class was added to manage the actual disassemblers.
85   class MCDisasmInstance;
86   std::unique_ptr<MCDisasmInstance> m_disasm_up;
87   std::unique_ptr<MCDisasmInstance> m_alternate_disasm_up;
88 };
89 
90 #endif // liblldb_DisassemblerLLVM_h_
91