path: root/source/Plugins/Instruction/ARM/EmulateInstructionARM.h

//===-- lldb_EmulateInstructionARM.h ------------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef lldb_EmulateInstructionARM_h_
#define lldb_EmulateInstructionARM_h_

#include "lldb/Core/EmulateInstruction.h"
#include "lldb/Core/ConstString.h"
#include "lldb/Core/Error.h"
#include "Plugins/Process/Utility/ARMDefines.h"

namespace lldb_private {

// ITSession - Keep track of the IT Block progression.
class ITSession
{
public:
    ITSession() : ITCounter(0), ITState(0) {}
    ~ITSession() {}

    // InitIT - Initializes ITCounter/ITState.
    bool InitIT(uint32_t bits7_0);

    // ITAdvance - Updates ITCounter/ITState as IT Block progresses.
    void ITAdvance();

    // InITBlock - Returns true if we're inside an IT Block.
    bool InITBlock();

    // LastInITBlock - Returns true if we're the last instruction inside an IT Block.
    bool LastInITBlock();

    // GetCond - Gets condition bits for the current thumb instruction.
    uint32_t GetCond();

private:
    uint32_t ITCounter; // Possible values: 0, 1, 2, 3, 4.
    uint32_t ITState;   // A2.5.2 Consists of IT[7:5] and IT[4:0] initially.
};

class EmulateInstructionARM : public EmulateInstruction
{
public: 
    typedef enum
    {
        eEncodingA1,
        eEncodingA2,
        eEncodingA3,
        eEncodingA4,
        eEncodingA5,
        eEncodingT1,
        eEncodingT2,
        eEncodingT3,
        eEncodingT4,
        eEncodingT5
    } ARMEncoding;
    

    static void
    Initialize ();
    
    static void
    Terminate ();

    static lldb_private::ConstString
    GetPluginNameStatic ();
    
    static const char *
    GetPluginDescriptionStatic ();
    
    static lldb_private::EmulateInstruction *
    CreateInstance (const lldb_private::ArchSpec &arch, 
                    InstructionType inst_type);
    
    static bool
    SupportsEmulatingInstructionsOfTypeStatic (InstructionType inst_type)
    {
        switch (inst_type)
        {
            case eInstructionTypeAny:
            case eInstructionTypePrologueEpilogue:
            case eInstructionTypePCModifying:
                return true;
                
            case eInstructionTypeAll:
                return false;
        }
        return false;
    }

    virtual lldb_private::ConstString
    GetPluginName()
    {
        return GetPluginNameStatic();
    }

    virtual uint32_t
    GetPluginVersion()
    {
        return 1;
    }

    bool
    SetTargetTriple (const ArchSpec &arch);
    
    enum Mode
    {
        eModeInvalid = -1,
        eModeARM,
        eModeThumb
    };
    
    EmulateInstructionARM (const ArchSpec &arch) :
        EmulateInstruction (arch),
        m_arm_isa (0),
        m_opcode_mode (eModeInvalid),
        m_opcode_cpsr (0),
        m_it_session (),
        m_ignore_conditions (false)
    {
        SetArchitecture (arch);
    }

//    EmulateInstructionARM (const ArchSpec &arch,
//                           bool ignore_conditions,
//                           void *baton,
//                           ReadMemory read_mem_callback,
//                           WriteMemory write_mem_callback,
//                           ReadRegister read_reg_callback,
//                           WriteRegister write_reg_callback) :
//        EmulateInstruction (arch,
//                            ignore_conditions,
//                            baton,
//                            read_mem_callback,
//                            write_mem_callback,
//                            read_reg_callback,
//                            write_reg_callback),
//        m_arm_isa (0),
//        m_opcode_mode (eModeInvalid),
//        m_opcode_cpsr (0),
//        m_it_session ()
//    {
//    }
    
    virtual bool
    SupportsEmulatingInstructionsOfType (InstructionType inst_type)
    {
        return SupportsEmulatingInstructionsOfTypeStatic (inst_type);
    }

    virtual bool
    SetArchitecture (const ArchSpec &arch);

    virtual bool 
    ReadInstruction ();
    
    virtual bool
    SetInstruction (const Opcode &insn_opcode, const Address &inst_addr, Target *target);

    virtual bool
    EvaluateInstruction (uint32_t evaluate_options);
    
    virtual bool
    TestEmulation (Stream *out_stream, ArchSpec &arch, OptionValueDictionary *test_data);

    virtual bool
    GetRegisterInfo (uint32_t reg_kind, uint32_t reg_num, RegisterInfo &reg_info);
    

    virtual bool
    CreateFunctionEntryUnwind (UnwindPlan &unwind_plan);

    uint32_t
    ArchVersion();

    bool
    ConditionPassed (const uint32_t opcode, 
                     bool *is_conditional = NULL);  // Filled in with true if the opcode is a conditional opcode
                                                    // Filled in with false if the opcode is always executed

    uint32_t
    CurrentCond (const uint32_t opcode);

    // InITBlock - Returns true if we're in Thumb mode and inside an IT Block.
    bool InITBlock();

    // LastInITBlock - Returns true if we're in Thumb mode and the last instruction inside an IT Block.
    bool LastInITBlock();

    bool 
    BadMode (uint32_t mode);
    
    bool
    CurrentModeIsPrivileged ();
    
    void
    CPSRWriteByInstr (uint32_t value, uint32_t bytemask, bool affect_execstate);
    
    bool
    BranchWritePC(const Context &context, uint32_t addr);

    bool
    BXWritePC(Context &context, uint32_t addr);

    bool
    LoadWritePC(Context &context, uint32_t addr);

    bool
    ALUWritePC(Context &context, uint32_t addr);

    Mode
    CurrentInstrSet();

    bool
    SelectInstrSet(Mode arm_or_thumb);

    bool
    WriteBits32Unknown (int n);

    bool
    WriteBits32UnknownToMemory (lldb::addr_t address);
    
    bool
    UnalignedSupport();

    typedef struct
    {
        uint32_t result;
        uint8_t carry_out;
        uint8_t overflow;
    } AddWithCarryResult;

    AddWithCarryResult
    AddWithCarry(uint32_t x, uint32_t y, uint8_t carry_in);

    // Helper method to read the content of an ARM core register.
    uint32_t
    ReadCoreReg (uint32_t regnum, bool *success);

    // See A8.6.96 MOV (immediate) Operation.
    // Default arguments are specified for carry and overflow parameters, which means
    // not to update the respective flags even if setflags is true.
    bool
    WriteCoreRegOptionalFlags (Context &context,
                               const uint32_t result,
                               const uint32_t Rd,
                               bool setflags,
                               const uint32_t carry = ~0u,
                               const uint32_t overflow = ~0u);

    bool
    WriteCoreReg (Context &context,
                  const uint32_t result,
                  const uint32_t Rd)
    {
        // Don't set the flags.
        return WriteCoreRegOptionalFlags(context, result, Rd, false);
    }

    // See A8.6.35 CMP (immediate) Operation.
    // Default arguments are specified for carry and overflow parameters, which means
    // not to update the respective flags.
    bool
    WriteFlags (Context &context,
                const uint32_t result,
                const uint32_t carry = ~0u,
                const uint32_t overflow = ~0u);

    inline uint64_t
    MemARead (EmulateInstruction::Context &context, 
              lldb::addr_t address, 
              uint32_t size, 
              uint64_t fail_value, 
              bool *success_ptr)
    {
        // This is a stub function corresponding to "MemA[]" in the ARM manual pseudocode, for 
        // aligned reads from memory.  Since we are not trying to write a full hardware simulator, and since
        // we are running in User mode (rather than Kernel mode) and therefore won't have access to many of the
        // system registers we would need in order to fully implement this function, we will just call
        // ReadMemoryUnsigned from here.  In the future, if we decide we do need to do more faithful emulation of
        // the hardware, we can update this function appropriately.
        
        return ReadMemoryUnsigned (context, address, size, fail_value, success_ptr);
    }
    
    inline bool
    MemAWrite (EmulateInstruction::Context &context,
               lldb::addr_t address,
               uint64_t data_val,
               uint32_t size)
    
    {
        // This is a stub function corresponding to "MemA[]" in the ARM manual pseudocode, for 
        // aligned writes to memory.  Since we are not trying to write a full hardware simulator, and since
        // we are running in User mode (rather than Kernel mode) and therefore won't have access to many of the
        // system registers we would need in order to fully implement this function, we will just call
        // WriteMemoryUnsigned from here.  In the future, if we decide we do need to do more faithful emulation of
        // the hardware, we can update this function appropriately.
        
        return WriteMemoryUnsigned (context, address, data_val, size);
    }
    
    
    inline uint64_t
    MemURead (EmulateInstruction::Context &context,
              lldb::addr_t address,
              uint32_t size,
              uint64_t fail_value,
              bool *success_ptr)
    {
        // This is a stub function corresponding to "MemU[]" in the ARM manual pseudocode, for 
        // unaligned reads from memory.  Since we are not trying to write a full hardware simulator, and since
        // we are running in User mode (rather than Kernel mode) and therefore won't have access to many of the
        // system registers we would need in order to fully implement this function, we will just call
        // ReadMemoryUnsigned from here.  In the future, if we decide we do need to do more faithful emulation of
        // the hardware, we can update this function appropriately.
        
        return ReadMemoryUnsigned (context, address, size, fail_value, success_ptr);
    }
    
    inline bool
    MemUWrite (EmulateInstruction::Context &context, 
               lldb::addr_t address,
               uint64_t data_val,
               uint32_t size)
    
    {
        // This is a stub function corresponding to "MemU[]" in the ARM manual pseudocode, for 
        // unaligned writes to memory.  Since we are not trying to write a full hardware simulator, and since
        // we are running in User mode (rather than Kernel mode) and therefore won't have access to many of the
        // system registers we would need in order to fully implement this function, we will just call
        // WriteMemoryUnsigned from here.  In the future, if we decide we do need to do more faithful emulation of
        // the hardware, we can update this function appropriately.
        
        return WriteMemoryUnsigned (context, address, data_val, size);
    }

protected:

    // Typedef for the callback function used during the emulation.
    // Pass along (ARMEncoding)encoding as the callback data.
    typedef enum
    {
        eSize16,
        eSize32
    } ARMInstrSize;

    typedef struct
    {
        uint32_t mask;
        uint32_t value;
        uint32_t variants;
        EmulateInstructionARM::ARMEncoding encoding;
        uint32_t vfp_variants;
        ARMInstrSize size;
        bool (EmulateInstructionARM::*callback) (const uint32_t opcode, const EmulateInstructionARM::ARMEncoding encoding);
        const char *name;
    }  ARMOpcode;
    
    uint32_t
    GetFramePointerRegisterNumber () const;

    uint32_t
    GetFramePointerDWARFRegisterNumber () const;

    static ARMOpcode*
    GetARMOpcodeForInstruction (const uint32_t opcode, uint32_t isa_mask);

    static ARMOpcode*
    GetThumbOpcodeForInstruction (const uint32_t opcode, uint32_t isa_mask);

    // A8.6.123 PUSH
    bool
    EmulatePUSH (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.122 POP
    bool
    EmulatePOP (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.8 ADD (SP plus immediate)
    bool
    EmulateADDRdSPImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.97 MOV (register) -- Rd == r7|ip and Rm == sp
    bool
    EmulateMOVRdSP (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.97 MOV (register) -- move from r8-r15 to r0-r7
    bool
    EmulateMOVLowHigh (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.59 LDR (literal)
    bool
    EmulateLDRRtPCRelative (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.8 ADD (SP plus immediate)
    bool
    EmulateADDSPImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.9 ADD (SP plus register)
    bool
    EmulateADDSPRm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.23 BL, BLX (immediate)
    bool
    EmulateBLXImmediate (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.24 BLX (register)
    bool
    EmulateBLXRm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.25 BX
    bool
    EmulateBXRm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.26 BXJ
    bool
    EmulateBXJRm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.212 SUB (immediate, ARM) -- Rd == r7 and Rm == ip
    bool
    EmulateSUBR7IPImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.215 SUB (SP minus immediate) -- Rd == ip
    bool
    EmulateSUBIPSPImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.215 SUB (SP minus immediate)
    bool
    EmulateSUBSPImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.216 SUB (SP minus register)
    bool
    EmulateSUBSPReg (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.194 STR (immediate, ARM) -- Rn == sp
    bool
    EmulateSTRRtSP (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.355 VPUSH
    bool
    EmulateVPUSH (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.354 VPOP
    bool
    EmulateVPOP (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.218 SVC (previously SWI)
    bool
    EmulateSVC (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.50 IT
    bool
    EmulateIT (const uint32_t opcode, const ARMEncoding encoding);

    // NOP
    bool
    EmulateNop (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.16 B
    bool
    EmulateB (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.27 CBNZ, CBZ
    bool
    EmulateCB (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.226 TBB, TBH
    bool
    EmulateTB (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.4 ADD (immediate, Thumb)
    bool
    EmulateADDImmThumb (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.5 ADD (immediate, ARM)
    bool
    EmulateADDImmARM (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.6 ADD (register)
    bool
    EmulateADDReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.7 ADD (register-shifted register)
    bool
    EmulateADDRegShift (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.97 MOV (register)
    bool
    EmulateMOVRdRm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.96 MOV (immediate)
    bool
    EmulateMOVRdImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.35 CMP (immediate)
    bool
    EmulateCMPImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.36 CMP (register)
    bool
    EmulateCMPReg (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.14 ASR (immediate)
    bool
    EmulateASRImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.15 ASR (register)
    bool
    EmulateASRReg (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.88 LSL (immediate)
    bool
    EmulateLSLImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.89 LSL (register)
    bool
    EmulateLSLReg (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.90 LSR (immediate)
    bool
    EmulateLSRImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.91 LSR (register)
    bool
    EmulateLSRReg (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.139 ROR (immediate)
    bool
    EmulateRORImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.140 ROR (register)
    bool
    EmulateRORReg (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.141 RRX
    bool
    EmulateRRX (const uint32_t opcode, const ARMEncoding encoding);

    // Helper method for ASR, LSL, LSR, ROR (immediate), and RRX
    bool
    EmulateShiftImm (const uint32_t opcode, const ARMEncoding encoding, ARM_ShifterType shift_type);

    // Helper method for ASR, LSL, LSR, and ROR (register)
    bool
    EmulateShiftReg (const uint32_t opcode, const ARMEncoding encoding, ARM_ShifterType shift_type);

    // LOAD FUNCTIONS
    
    // A8.6.53 LDM/LDMIA/LDMFD
    bool
    EmulateLDM (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.54 LDMDA/LDMFA
    bool
    EmulateLDMDA (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.55 LDMDB/LDMEA
    bool 
    EmulateLDMDB (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.56 LDMIB/LDMED
    bool
    EmulateLDMIB (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.57 LDR (immediate, Thumb) -- Encoding T1
    bool
    EmulateLDRRtRnImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.58 LDR (immediate, ARM) - Encoding A1
    bool
    EmulateLDRImmediateARM (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.59 LDR (literal)
    bool
    EmulateLDRLiteral (const uint32_t, const ARMEncoding encoding);
    
    // A8.6.60 LDR (register) - Encoding T1, T2, A1
    bool
    EmulateLDRRegister (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.61 LDRB (immediate, Thumb) - Encoding T1, T2, T3
    bool
    EmulateLDRBImmediate (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.62 LDRB (immediate, ARM)
    bool
    EmulateLDRBImmediateARM (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.63 LDRB (literal) - Encoding T1, A1
    bool
    EmulateLDRBLiteral (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.64 LDRB (register) - Encoding T1, T2, A1
    bool
    EmulateLDRBRegister (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.65 LDRBT
    bool
    EmulateLDRBT (const uint32_t opcode, const ARMEncoding encoding);
        
    // A8.6.66 LDRD (immediate)
    bool
    EmulateLDRDImmediate (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.67
    bool
    EmulateLDRDLiteral (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.68 LDRD (register)
    bool
    EmulateLDRDRegister (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.69 LDREX
    bool
    EmulateLDREX (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.70 LDREXB
    bool
    EmulateLDREXB (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.71 LDREXD
    bool
    EmulateLDREXD (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.72 LDREXH
    bool
    EmulateLDREXH (const uint32_t opcode, const ARMEncoding encoding);
                                                 
    // A8.6.73 LDRH (immediate, Thumb) - Encoding T1, T2, T3
    bool
    EmulateLDRHImmediate (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.74 LDRS (immediate, ARM)
    bool
    EmulateLDRHImmediateARM (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.75 LDRH (literal) - Encoding T1, A1
    bool
    EmulateLDRHLiteral (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.76 LDRH (register) - Encoding T1, T2, A1
    bool
    EmulateLDRHRegister (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.77 LDRHT
    bool
    EmulateLDRHT (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.78 LDRSB (immediate) - Encoding T1, T2, A1
    bool
    EmulateLDRSBImmediate (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.79 LDRSB (literal) - Encoding T1, A1
    bool
    EmulateLDRSBLiteral (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.80 LDRSB (register) - Encoding T1, T2, A1
    bool
    EmulateLDRSBRegister (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.81 LDRSBT
    bool
    EmulateLDRSBT (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.82 LDRSH (immediate) - Encoding T1, T2, A1
    bool
    EmulateLDRSHImmediate (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.83 LDRSH (literal) - Encoding T1, A1
    bool
    EmulateLDRSHLiteral (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.84 LDRSH (register) - Encoding T1, T2, A1
    bool
    EmulateLDRSHRegister (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.85 LDRSHT
    bool
    EmulateLDRSHT (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.86
    bool
    EmulateLDRT (const uint32_t opcode, const ARMEncoding encoding);
                             

    // STORE FUNCTIONS
                             
    // A8.6.189 STM/STMIA/STMEA
    bool
    EmulateSTM (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.190 STMDA/STMED
    bool
    EmulateSTMDA (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.191 STMDB/STMFD
    bool
    EmulateSTMDB (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.192 STMIB/STMFA
    bool
    EmulateSTMIB (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.193 STR (immediate, Thumb)
    bool
    EmulateSTRThumb(const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.194 STR (immediate, ARM)
    bool
    EmulateSTRImmARM (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.195 STR (register)
    bool
    EmulateSTRRegister (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.196 STRB (immediate, Thumb)
    bool
    EmulateSTRBThumb (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.197 STRB (immediate, ARM)
    bool
    EmulateSTRBImmARM (const uint32_t opcode, const ARMEncoding encoding);
            
    // A8.6.198 STRB (register)
    bool
    EmulateSTRBReg (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.199 STRBT
    bool
    EmulateSTRBT (const uint32_t opcode, const ARMEncoding encoding);
                            
    // A8.6.200 STRD (immediate)
    bool
    EmulateSTRDImm (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.201 STRD (register)
    bool
    EmulateSTRDReg (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.202 STREX
    bool
    EmulateSTREX (const uint32_t opcode, const ARMEncoding encoding);
                    
    // A8.6.203 STREXB
    bool
    EmulateSTREXB (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.204 STREXD
    bool
    EmulateSTREXD (const uint32_t opcode, const ARMEncoding encoding);
                            
    // A8.6.205 STREXH
    bool
    EmulateSTREXH (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.206 STRH (immediate, Thumb)
    bool
    EmulateSTRHImmThumb (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.207 STRH (immediate, ARM)
    bool
    EmulateSTRHImmARM (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.208 STRH (register)
    bool
    EmulateSTRHRegister (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.209 STRHT
    bool
    EmulateSTRHT (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.210 STRT
    bool
    EmulateSTRT (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.1 ADC (immediate)
    bool
    EmulateADCImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.2 ADC (Register)
    bool
    EmulateADCReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.10 ADR
    bool
    EmulateADR (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.11 AND (immediate)
    bool
    EmulateANDImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.12 AND (register)
    bool
    EmulateANDReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.19 BIC (immediate)
    bool
    EmulateBICImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.20 BIC (register)
    bool
    EmulateBICReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.26 BXJ
    bool
    EmulateBXJ (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.32 CMN (immediate)
    bool
    EmulateCMNImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.33 CMN (register)
    bool
    EmulateCMNReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.44 EOR (immediate)
    bool
    EmulateEORImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.45 EOR (register)
    bool
    EmulateEORReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.105 MUL
    bool
    EmulateMUL (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.106 MVN (immediate)
    bool
    EmulateMVNImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.107 MVN (register)
    bool
    EmulateMVNReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.113 ORR (immediate)
    bool
    EmulateORRImm (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.114 ORR (register)
    bool
    EmulateORRReg (const uint32_t opcode, const ARMEncoding encoding);

    // A8.6.117 PLD (immediate, literal) - Encoding T1, T2, T3, A1
    bool
    EmulatePLDImmediate (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.119 PLI (immediate,literal) - Encoding T3, A1
    bool
    EmulatePLIImmediate (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.120 PLI (register) - Encoding T1, A1
    bool
    EmulatePLIRegister (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.141 RSB (immediate)
    bool
    EmulateRSBImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.142 RSB (register)
    bool
    EmulateRSBReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.144 RSC (immediate)
    bool
    EmulateRSCImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.145 RSC (register)
    bool
    EmulateRSCReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.150 SBC (immediate)
    bool
    EmulateSBCImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.151 SBC (register)
    bool
    EmulateSBCReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.211 SUB (immediate, Thumb)
    bool
    EmulateSUBImmThumb (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.212 SUB (immediate, ARM)
    bool
    EmulateSUBImmARM (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.213 SUB (register)
    bool
    EmulateSUBReg (const uint32_t opcode, const ARMEncoding encoding);
                             
    // A8.6.214 SUB (register-shifted register)
    bool
    EmulateSUBRegShift (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.222 SXTB  - Encoding T1
    bool
    EmulateSXTB (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.224 SXTH  - EncodingT1
    bool
    EmulateSXTH (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.227 TEQ (immediate) - Encoding A1
    bool
    EmulateTEQImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.228 TEQ (register)  - Encoding A1
    bool
    EmulateTEQReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.230 TST (immediate) - Encoding A1
    bool
    EmulateTSTImm (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.231 TST (register)  - Encoding T1, A1
    bool
    EmulateTSTReg (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.262 UXTB  - Encoding T1
    bool
    EmulateUXTB (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.264 UXTH  - Encoding T1
    bool
    EmulateUXTH (const uint32_t opcode, const ARMEncoding encoding);
    
    // B6.1.8  RFE
    bool
    EmulateRFE (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.319 VLDM
    bool
    EmulateVLDM (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.399 VSTM
    bool
    EmulateVSTM (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.307 VLD1 (multiple single elements)
    bool
    EmulateVLD1Multiple (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.308 VLD1 (single element to one lane)
    bool
    EmulateVLD1Single (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.309 VLD1 (single element to all lanes)
    bool
    EmulateVLD1SingleAll (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.391 VST1 (multiple single elements)
    bool
    EmulateVST1Multiple (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.392 VST1 (single element from one lane)
    bool
    EmulateVST1Single (const uint32_t opcode, const ARMEncoding encoding);
    
    // A8.6.317 VLDR
    bool
    EmulateVLDR (const uint32_t opcode, const ARMEncoding encoding);
    
    
    // A8.6.400 VSTR
    bool
    EmulateVSTR (const uint32_t opcode, const ARMEncoding encoding);
    
    // B6.2.13 SUBS PC, LR and related instructions
    bool
    EmulateSUBSPcLrEtc (const uint32_t opcode, const ARMEncoding encoding);
    
    uint32_t m_arm_isa;
    Mode m_opcode_mode;
    uint32_t m_opcode_cpsr;
    uint32_t m_new_inst_cpsr; // This can get updated by the opcode.
    ITSession m_it_session;
    bool m_ignore_conditions;
};

}   // namespace lldb_private

#endif  // lldb_EmulateInstructionARM_h_