constant INSTR_ADDR_WIDTH : INTEGER := 32;
constant PHYS_INSTR_ADDR_WIDTH : INTEGER := 11;
constant REG_ADDR_WIDTH : INTEGER := 4;
- constant DATA_ADDR_WIDTH : INTEGER := 32;
+ constant DATA_ADDR_WIDTH : INTEGER := 11;
constant PHYS_DATA_ADDR_WIDTH : INTEGER := 32;
constant NUM_OP_OPT_WIDTH : INTEGER := 6;
subtype instruction_word_t is std_logic_vector(WORD_WIDTH-1 downto 0);
subtype instruction_addr_t is std_logic_vector(INSTR_ADDR_WIDTH-1 downto 0);
+ subtype instr_addr_t is instruction_addr_t;
subtype gp_addr_t is std_logic_vector(REG_ADDR_WIDTH-1 downto 0);
subtype data_ram_word_t is std_logic_vector(WORD_WIDTH-1 downto 0);
constant ARITH_OPT : integer := 1;
constant CARRY_OPT : integer := 2;
-
+
constant RIGHT_OPT : integer := 3;
+ constant JMP_REG_OPT : integer := 3;
+ constant ST_OPT : integer := 3;
constant NO_PSW_OPT : integer := 4;--no sharing
constant NO_DST_OPT : integer := 5; --no sharing
- type op_info_t is (ADDSUB_OP,AND_OP,OR_OP, XOR_OP,SHIFT_OP);
+ type op_info_t is (ADDSUB_OP,AND_OP,OR_OP, XOR_OP,SHIFT_OP, LDST_OP, JMP_OP, JMP_ST_OP);
subtype op_opt_t is std_logic_vector(NUM_OP_OPT_WIDTH-1 downto 0);
immediate : std_logic_vector(WORD_WIDTH-1 downto 0);
+ displacement : gp_register_t;
+
jmptype : std_logic_vector(1 downto 0);
high_low, fill, signext, bp: std_logic;
rtw_reg2 : std_logic;
immediate : gp_register_t;
imm_set : std_logic;
+ reg1_addr : gp_addr_t;
+ reg2_addr : gp_addr_t;
end record;
op_group : op_info_t;
op_detail : op_opt_t;
brpr : std_logic;
+
+ displacement : gp_register_t;
+ prog_cnt : instr_addr_t;
src1 : gp_register_t;
src2 : gp_register_t;
end record;
-
+ type writeback_rec is record
+-- result : in gp_register_t; --reg (alu result or jumpaddr)
+-- result_addr : in gp_addr_t; --reg
+ address : word_t; --ureg
+-- alu_jmp : in std_logic; --reg
+-- br_pred : in std_logic; --reg
+-- write_en : in std_logic; --reg (register file)
+ dmem_en : std_logic; --ureg (jump addr in mem or in address)
+ dmem_write_en : std_logic; --ureg
+ hword : std_logic; --ureg
+ byte_s : std_logic;
+ end record;
function inc(value : in std_logic_vector; constant by : in integer := 1) return std_logic_vector;