| Line 70... |
Line 70... |
signal wb_count_instruction : std_logic;
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signal wb_count_instruction : std_logic;
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-- CSR read port signals:
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-- CSR read port signals:
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signal csr_read_data : std_logic_vector(31 downto 0);
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signal csr_read_data : std_logic_vector(31 downto 0);
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signal csr_read_writeable : boolean;
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signal csr_read_writeable : boolean;
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signal csr_read_address, csr_read_address_p : csr_address;
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-- Status register outputs:
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-- Status register outputs:
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signal status : csr_status_register;
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signal status : csr_status_register;
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signal evec : std_logic_vector(31 downto 0);
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signal evec : std_logic_vector(31 downto 0);
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| Line 184... |
Line 185... |
count_instruction => wb_count_instruction,
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count_instruction => wb_count_instruction,
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fromhost_data => fromhost_data,
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fromhost_data => fromhost_data,
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fromhost_updated => fromhost_write_en,
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fromhost_updated => fromhost_write_en,
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tohost_data => tohost_data,
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tohost_data => tohost_data,
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tohost_updated => tohost_write_en,
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tohost_updated => tohost_write_en,
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read_address => id_csr_address,
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read_address => csr_read_address,
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read_data_out => csr_read_data,
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read_data_out => csr_read_data,
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read_writeable => csr_read_writeable,
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read_writeable => csr_read_writeable,
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write_address => wb_csr_address,
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write_address => wb_csr_address,
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write_data_in => wb_csr_data,
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write_data_in => wb_csr_data,
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write_mode => wb_csr_write,
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write_mode => wb_csr_write,
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| Line 196... |
Line 197... |
exception_context_write => wb_exception,
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exception_context_write => wb_exception,
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status_out => status,
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status_out => status,
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evec_out => evec
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evec_out => evec
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);
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);
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csr_read_address <= id_csr_address when stall_ex = '0' else csr_read_address_p;
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store_previous_csr_addr: process(clk, stall_ex)
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begin
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if rising_edge(clk) and stall_ex = '0' then
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csr_read_address_p <= id_csr_address;
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end if;
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end process store_previous_csr_addr;
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------- Register file -------
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------- Register file -------
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regfile: entity work.pp_register_file
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regfile: entity work.pp_register_file
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port map(
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port map(
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clk => clk,
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clk => clk,
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rs1_addr => rs1_address,
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rs1_addr => rs1_address,
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| Line 303... |
Line 313... |
shamt_in => id_shamt,
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shamt_in => id_shamt,
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immediate_in => id_immediate,
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immediate_in => id_immediate,
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funct3_in => id_funct3,
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funct3_in => id_funct3,
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pc_in => id_pc,
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pc_in => id_pc,
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pc_out => ex_pc,
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pc_out => ex_pc,
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csr_addr_in => id_csr_address,
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csr_addr_in => csr_read_address,
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csr_addr_out => ex_csr_address,
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csr_addr_out => ex_csr_address,
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csr_write_in => id_csr_write,
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csr_write_in => id_csr_write,
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csr_write_out => ex_csr_write,
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csr_write_out => ex_csr_write,
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csr_value_in => csr_read_data,
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csr_value_in => csr_read_data,
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csr_value_out => ex_csr_data,
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csr_value_out => ex_csr_data,
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