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Started implementing interruptions

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lcbcFoo 2017-10-29 17:24:36 -02:00
parent f8a67fe1f2
commit 34bad13737
1 changed files with 18 additions and 7 deletions
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25
lib/gaisler/leon3v3/iu3.vhd
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@ -1633,13 +1633,24 @@ begin
inst := r.a.ctrl.inst; trap := trapin; tt := ttin;
if r.a.ctrl.annul = '0' then
if(inst(31 downto 0) = "00000000000100000000000001110011")then
illegal_inst := '1';
elsif(inst(31 downto 0) = "00000000000100000000000001110011")then
illegal_inst := '1';
else
illegal_inst := '0';
end if;
case inst(6 downto 0) is
when R_LUI | R_AUIPC | R_JAL | R_JALR | R_BRANCH | R_LD | R_ST | R_IMM
| R_NOIMM =>
illegal_inst := '0';
when others =>
illegal_inst := '1';
end case;
-- if(inst(31 downto 0) = "00000000000100000000000001110011")then
-- illegal_inst := '1';
-- elsif(inst(31 downto 0) = "00000000000000000000000001110011")then
-- illegal_inst := '1';
-- else
-- illegal_inst := '0';
-- end if;
-- op := inst(31 downto 30); op2 := inst(24 downto 22);
-- op3 := inst(24 downto 19); rd := inst(29 downto 25);
-- illegal_inst := '0'; privileged_inst := '0'; cp_disabled := '0';