| Line 138... |
Line 138... |
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signal rs1_forwarded, rs2_forwarded : std_logic_vector(31 downto 0);
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signal rs1_forwarded, rs2_forwarded : std_logic_vector(31 downto 0);
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signal branch : branch_type;
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signal branch : branch_type;
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signal branch_condition : std_logic;
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signal branch_condition : std_logic;
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signal do_jump : std_logic;
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signal jump_target : std_logic_vector(31 downto 0);
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signal jump_target : std_logic_vector(31 downto 0);
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signal sr : csr_status_register;
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signal sr : csr_status_register;
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signal evec, evec_forwarded : std_logic_vector(31 downto 0);
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signal evec, evec_forwarded : std_logic_vector(31 downto 0);
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| Line 187... |
Line 188... |
status => exception_context_forwarded.status,
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status => exception_context_forwarded.status,
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cause => exception_cause,
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cause => exception_cause,
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badvaddr => exception_vaddr
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badvaddr => exception_vaddr
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) when exception_taken = '1' else exception_context_forwarded;
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) when exception_taken = '1' else exception_context_forwarded;
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jump_out <= to_std_logic(branch = BRANCH_JUMP or branch = BRANCH_JUMP_INDIRECT)
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do_jump <= to_std_logic(branch = BRANCH_JUMP or branch = BRANCH_JUMP_INDIRECT)
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or (to_std_logic(branch = BRANCH_CONDITIONAL) and branch_condition)
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or (to_std_logic(branch = BRANCH_CONDITIONAL) and branch_condition)
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or to_std_logic(branch = BRANCH_SRET);
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or to_std_logic(branch = BRANCH_SRET);
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jump_out <= do_jump;
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jump_target_out <= jump_target;
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jump_target_out <= jump_target;
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evec_out <= evec_forwarded;
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evec_out <= evec_forwarded;
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exception_taken <= decode_exception or to_std_logic(exception_cause /= CSR_CAUSE_NONE) or irq_asserted;
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exception_taken <= decode_exception or to_std_logic(exception_cause /= CSR_CAUSE_NONE) or irq_asserted;
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| Line 309... |
Line 311... |
when others =>
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when others =>
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data_misaligned <= '0';
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data_misaligned <= '0';
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end case;
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end case;
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end process data_misalign_check;
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end process data_misalign_check;
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instr_misalign_check: instr_misaligned <= '1' when jump_target(1 downto 0) /= b"00" else '0';
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instr_misalign_check: process(jump_target, branch, branch_condition)
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begin
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if jump_target(1 downto 0) /= b"00" and do_jump = '1' then
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instr_misaligned <= '1';
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else
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instr_misaligned <= '0';
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end if;
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end process instr_misalign_check;
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find_exception_cause: process(decode_exception, decode_exception_cause, mem_op,
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find_exception_cause: process(decode_exception, decode_exception_cause, mem_op,
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data_misaligned, instr_misaligned, irq_asserted, irq_asserted_num)
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data_misaligned, instr_misaligned, irq_asserted, irq_asserted_num)
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begin
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begin
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if irq_asserted = '1' then
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if irq_asserted = '1' then
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