#include <stdbool.h>
#include "a64instruction_global.h"
#include "a64instruction_DP.h"

// Denotes the type of data processing operation
typedef enum {
    a64inst_DPR_ARITHMLOGIC,
    a64inst_DPR_MULTIPLY
} a64inst_DPROpType;

// Denotes the logical operations supported by the architecture
typedef enum {
    a64inst_AND = 0,
    a64inst_OR = 1,
    a64inst_XOR = 2,
    a64inst_AND_FLAGGED = 3
} a64inst_logicOp;

// Denotes the different kinds of shifts supported by the architecture
typedef enum {
    a64inst_LSL = 0,
    a64inst_LSR = 1,
    a64inst_ASR = 2,
    a64inst_ROR = 3
} a64inst_ShiftType;

// Holds data specific to arithmetic/logic register data processing instructions
typedef struct {
    enum {
        a64inst_DPR_ARITHM = 0,
        a64inst_DPR_LOGIC = 1
    } type;
    a64inst_ShiftType shiftType;
    bool negShiftedSrc2; // Guaranteed to be 0 for arithmetic instructions
} a64inst_DPRegister_ArithmLogicData;

// Holds data specific to multiply register data processing instructions
typedef struct {
    bool negProd;
    a64inst_regSpecifier summand;
} a64inst_DPRegister_MultiplyData;

// Holds data for register data processing instructions
typedef struct {
    a64inst_regType regType;
    a64inst_DPROpType DPROpType;
    union {
        a64inst_logicOp logicOp;
        a64inst_arithmOp arithmOp;
    } processOp;
    a64inst_regSpecifier src2;
    union {
        a64inst_DPRegister_ArithmLogicData arithmLogicData;
        a64inst_DPRegister_MultiplyData multiplydata;
    } processOpData;
    a64inst_regSpecifier src1;
    a64inst_regSpecifier dest;
} a64inst_DPRegisterData;