| Line 82... |
Line 82... |
|
|
if exception_in = '1' then
|
if exception_in = '1' then
|
mem_op <= MEMOP_TYPE_NONE;
|
mem_op <= MEMOP_TYPE_NONE;
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rd_write_out <= '0';
|
rd_write_out <= '0';
|
csr_write_out <= CSR_WRITE_REPLACE;
|
csr_write_out <= CSR_WRITE_REPLACE;
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csr_addr_out <= CSR_EPC;
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csr_addr_out <= CSR_MEPC;
|
csr_data_out <= pc;
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csr_data_out <= pc;
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count_instr_out <= '0';
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count_instr_out <= '0';
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else
|
else
|
mem_op <= mem_op_in;
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mem_op <= mem_op_in;
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rd_write_out <= rd_write_in;
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rd_write_out <= rd_write_in;
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| Line 106... |
Line 106... |
exception_out <= '0';
|
exception_out <= '0';
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else
|
else
|
exception_out <= exception_in or to_std_logic(branch = BRANCH_SRET);
|
exception_out <= exception_in or to_std_logic(branch = BRANCH_SRET);
|
|
|
if exception_in = '1' then
|
if exception_in = '1' then
|
exception_context_out.status <= (
|
exception_context_out.ie <= '0';
|
pim => exception_context_in.status.im,
|
exception_context_out.ie1 <= exception_context_in.ie;
|
im => (others => '0'),
|
|
pei => exception_context_in.status.ei,
|
|
ei => '0'
|
|
);
|
|
exception_context_out.cause <= exception_context_in.cause;
|
exception_context_out.cause <= exception_context_in.cause;
|
exception_context_out.badvaddr <= exception_context_in.badvaddr;
|
exception_context_out.badaddr <= exception_context_in.badaddr;
|
elsif branch = BRANCH_SRET then
|
elsif branch = BRANCH_SRET then
|
exception_context_out.status <= (
|
exception_context_out.ie <= exception_context_in.ie1;
|
pim => exception_context_in.status.pim,
|
exception_context_out.ie1 <= exception_context_in.ie;
|
im => exception_context_in.status.pim,
|
|
pei => exception_context_in.status.pei,
|
|
ei => exception_context_in.status.pei
|
|
);
|
|
exception_context_out.cause <= CSR_CAUSE_NONE;
|
exception_context_out.cause <= CSR_CAUSE_NONE;
|
exception_context_out.badvaddr <= (others => '0');
|
exception_context_out.badaddr <= (others => '0');
|
else
|
else
|
exception_context_out.status <= exception_context_in.status;
|
exception_context_out.ie <= exception_context_in.ie;
|
|
exception_context_out.ie1 <= exception_context_in.ie1;
|
exception_context_out.cause <= CSR_CAUSE_NONE;
|
exception_context_out.cause <= CSR_CAUSE_NONE;
|
exception_context_out.badvaddr <= (others => '0');
|
exception_context_out.badaddr <= (others => '0');
|
end if;
|
end if;
|
end if;
|
end if;
|
end if;
|
end if;
|
end process update_exception_context;
|
end process update_exception_context;
|
|
|
