`ifndef __COMMON_SVH__
`define __COMMON_SVH__

`define RV_OP_FIELD 6:0
typedef logic [31:0] rv_t;
typedef logic [31:0] xlen_t;

typedef struct packed {
	logic [6:0] funct7;
	logic [4:0] rs2;
	logic [4:0] rs1;
	logic [2:0] funct3;
	logic [4:0] rd;
	logic [6:0] op;
} rtype_t;

typedef struct packed {
	logic [11:0] imm;
	logic [4:0] rs1;
	logic [2:0] funct3;
	logic [4:0] rd;
	logic [6:0] op;
} itype_t;

typedef struct packed {
	logic [6:0] imm1;
	logic [4:0] rs2;
	logic [4:0] rs1;
	logic [2:0] funct3;
	logic [4:0] imm0;
	logic [6:0] op;
} stype_t;

typedef struct packed {
	logic [0:0] imm3;
	logic [5:0] imm2;
	logic [4:0] rs2;
	logic [4:0] rs1;
	logic [2:0] funct3;
	logic [3:0] imm1;
	logic [0:0] imm0;
	logic [6:0] op;
} btype_t;

typedef struct packed {
	logic [19:0] imm;
	logic [4:0] rd;
	logic [6:0] op;
} utype_t;

typedef struct packed {
	logic [0:0] imm3;
	logic [9:0] imm2;
	logic [0:0] imm1;
	logic [7:0] imm0;
	logic [4:0] rd;
	logic [6:0] op;
} jtype_t;

typedef enum logic [6:0] {
	LOAD      = 7'b0000011,
	LOAD_FP   = 7'b0000111,
	MISC_MEM  = 7'b0001111,
	OP_IMM    = 7'b0010011,
	AUIPC     = 7'b0010111,
	OP_IMM_32 = 7'b0011011,

	STORE     = 7'b0100011,
	STORE_FP  = 7'b0100111,
	AMO       = 7'b0101111,
	OP        = 7'b0110011,
	LUI       = 7'b0110111,
	OP_32     = 7'b0111011,

	MADD     = 7'b1000011,
	MSUB     = 7'b1000111,
	NMSUB    = 7'b1001011,
	NMADD    = 7'b1001111,
	OP_FP    = 7'b1010011,

	BRANCH   = 7'b1100011,
	JALR     = 7'b1100111,
	JAL      = 7'b1101111,
	SYSTEM   = 7'b1110011
} opcode_t;

typedef logic[7:0] port_t;

typedef enum port_t {
	NOP = 8'b00000000,
	REG = 8'b00100000,
	ALU = 8'b01000000
} port_base_t;

typedef struct packed {
	port_t src;
	port_t dst;
} mov_t;

typedef logic[7:0] op_t;
typedef logic[19:0] imm_t;

typedef struct packed {
	mov_t[1:0] in;
	mov_t out;
	op_t op;
	imm_t imm;
} insn_t;

typedef enum op_t {
	ALU_ADD,
	ALU_SUB,
	ALU_ADDI
} alu_op_t;

`define rn(r) (REG + port_t'(r))
`define alu(fu) (ALU + port_t'(fu))

`endif /* __COMMON_SVH__ */