153 lines
4.9 KiB
C++
153 lines
4.9 KiB
C++
//===-- DisassemblerLLVMC.h -------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef liblldb_DisassemblerLLVMC_h_
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#define liblldb_DisassemblerLLVMC_h_
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// C Includes
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// C++ Includes
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#include <memory>
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#include <mutex>
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#include <string>
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// Other libraries and framework includes
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#include "llvm-c/Disassembler.h"
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// Project includes
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#include "lldb/Core/Address.h"
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#include "lldb/Core/Disassembler.h"
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#include "lldb/Core/PluginManager.h"
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// Opaque references to C++ Objects in LLVM's MC.
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namespace llvm {
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class MCContext;
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class MCInst;
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class MCInstrInfo;
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class MCRegisterInfo;
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class MCDisassembler;
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class MCInstPrinter;
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class MCAsmInfo;
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class MCSubtargetInfo;
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} // namespace llvm
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class InstructionLLVMC;
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class DisassemblerLLVMC : public lldb_private::Disassembler {
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// Since we need to make two actual MC Disassemblers for ARM (ARM & THUMB),
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// and there's a bit of goo to set up and own
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// in the MC disassembler world, I added this class to manage the actual
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// disassemblers.
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class LLVMCDisassembler {
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public:
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LLVMCDisassembler(const char *triple, const char *cpu,
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const char *features_str, unsigned flavor,
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DisassemblerLLVMC &owner);
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~LLVMCDisassembler();
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uint64_t GetMCInst(const uint8_t *opcode_data, size_t opcode_data_len,
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lldb::addr_t pc, llvm::MCInst &mc_inst);
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void PrintMCInst(llvm::MCInst &mc_inst, std::string &inst_string,
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std::string &comments_string);
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void SetStyle(bool use_hex_immed, HexImmediateStyle hex_style);
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bool CanBranch(llvm::MCInst &mc_inst);
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bool HasDelaySlot(llvm::MCInst &mc_inst);
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bool IsCall(llvm::MCInst &mc_inst);
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bool IsValid() { return m_is_valid; }
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private:
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bool m_is_valid;
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std::unique_ptr<llvm::MCContext> m_context_ap;
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std::unique_ptr<llvm::MCAsmInfo> m_asm_info_ap;
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std::unique_ptr<llvm::MCSubtargetInfo> m_subtarget_info_ap;
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std::unique_ptr<llvm::MCInstrInfo> m_instr_info_ap;
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std::unique_ptr<llvm::MCRegisterInfo> m_reg_info_ap;
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std::unique_ptr<llvm::MCInstPrinter> m_instr_printer_ap;
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std::unique_ptr<llvm::MCDisassembler> m_disasm_ap;
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};
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public:
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DisassemblerLLVMC(const lldb_private::ArchSpec &arch,
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const char *flavor /* = NULL */);
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~DisassemblerLLVMC() override;
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//------------------------------------------------------------------
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// Static Functions
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//------------------------------------------------------------------
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static void Initialize();
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static void Terminate();
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static lldb_private::ConstString GetPluginNameStatic();
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static lldb_private::Disassembler *
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CreateInstance(const lldb_private::ArchSpec &arch, const char *flavor);
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size_t DecodeInstructions(const lldb_private::Address &base_addr,
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const lldb_private::DataExtractor &data,
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lldb::offset_t data_offset, size_t num_instructions,
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bool append, bool data_from_file) override;
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//------------------------------------------------------------------
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// PluginInterface protocol
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//------------------------------------------------------------------
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lldb_private::ConstString GetPluginName() override;
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uint32_t GetPluginVersion() override;
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protected:
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friend class InstructionLLVMC;
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bool FlavorValidForArchSpec(const lldb_private::ArchSpec &arch,
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const char *flavor) override;
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bool IsValid() {
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return (m_disasm_ap.get() != NULL && m_disasm_ap->IsValid());
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}
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int OpInfo(uint64_t PC, uint64_t Offset, uint64_t Size, int TagType,
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void *TagBug);
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const char *SymbolLookup(uint64_t ReferenceValue, uint64_t *ReferenceType,
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uint64_t ReferencePC, const char **ReferenceName);
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static int OpInfoCallback(void *DisInfo, uint64_t PC, uint64_t Offset,
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uint64_t Size, int TagType, void *TagBug);
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static const char *SymbolLookupCallback(void *DisInfo,
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uint64_t ReferenceValue,
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uint64_t *ReferenceType,
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uint64_t ReferencePC,
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const char **ReferenceName);
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void Lock(InstructionLLVMC *inst,
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const lldb_private::ExecutionContext *exe_ctx) {
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m_mutex.lock();
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m_inst = inst;
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m_exe_ctx = exe_ctx;
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}
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void Unlock() {
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m_inst = NULL;
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m_exe_ctx = NULL;
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m_mutex.unlock();
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}
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const lldb_private::ExecutionContext *m_exe_ctx;
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InstructionLLVMC *m_inst;
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std::mutex m_mutex;
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bool m_data_from_file;
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std::unique_ptr<LLVMCDisassembler> m_disasm_ap;
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std::unique_ptr<LLVMCDisassembler> m_alternate_disasm_ap;
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};
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#endif // liblldb_DisassemblerLLVM_h_
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