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sim: sim_boolean: handle XOR, add unit test

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This commit is contained in:
Mikael Pettersson 2020-07-24 18:12:44 +02:00
parent a30384b185
commit b3038df02b
3 changed files with 32 additions and 0 deletions
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17
erlang/apps/sim/src/sim_boolean.erl
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@ -42,6 +42,7 @@
, handle_SETZ/4
, handle_SETZB/4
, handle_SETZM/4
, handle_XOR/4
]).
-include("sim_core.hrl").
@ -289,6 +290,22 @@ handle_ANDCMB(Core, Mem, IR, EA) ->
fun(Core1, Mem1) -> handle_ANDCMB(Core1, Mem1, IR, EA) end)
end.
%% XOR - Exclusive Or with AC
-spec handle_XOR(#core{}, sim_mem:mem(), IR :: word(), #ea{})
-> {#core{}, sim_mem:mem(), {ok, integer()} | {error, {module(), term()}}}.
handle_XOR(Core, Mem, IR, EA) ->
case sim_core:c(Core, Mem, EA) of
{ok, CE} ->
AC = IR band 8#17,
CA = sim_core:get_ac(Core, AC),
Word = CE bxor CA,
sim_core:next_pc(sim_core:set_ac(Core, AC, Word), Mem);
{error, Reason} ->
sim_core:page_fault(Core, Mem, ea_address(EA), read, Reason,
fun(Core1, Mem1) -> handle_XOR(Core1, Mem1, IR, EA) end)
end.
%% Miscellaneous ===============================================================
ea_address(#ea{section = Section, offset = Offset}) ->

1
erlang/apps/sim/src/sim_core.erl
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@ -277,6 +277,7 @@ dispatch(Core, Mem, IR, EA) ->
8#425 -> next_pc(Core, Mem); % SETAI = no-op
8#426 -> sim_moves:handle_MOVEM(Core, Mem, IR, EA); % SETAM = MOVEM
8#427 -> sim_moves:handle_MOVEM(Core, Mem, IR, EA); % SETAB = MOVEM
8#430 -> sim_boolean:handle_XOR(Core, Mem, IR, EA);
_ ->
PC = (Core#core.pc_section bsl 18) bor Core#core.pc_offset,
{Core, Mem, {error, {?MODULE, {dispatch, PC, IR, EA}}}}

14
erlang/apps/sim/test/sim_boolean_tests.erl
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@ -68,6 +68,7 @@
-define(OP_SETAI, 8#425).
-define(OP_SETAM, 8#426).
-define(OP_SETAB, 8#426).
-define(OP_XOR, 8#430).
%% 2.4 Boolean Functions =======================================================
@ -374,6 +375,19 @@ setab_test() ->
[ {#ea{section = 1, offset = 8#150, islocal = false}, 8#42} % C(1,,150) = 42
]).
%% XOR - Exclusive Or with AC
xor_test() ->
Prog =
[ {1, 8#100, ?INSN(?OP_MOVEI, 1, 0, 0, 8#707070)} % 1,,100/ MOVEI 1,707070
, {1, 8#101, ?INSN(?OP_XOR, 1, 0, 0, 8#200)} % 1,,101/ XOR 1,200
, {1, 8#102, ?INSN_INVALID} % 1,,102/ <invalid>
, {1, 8#200, ?COMMA2(0, 8#333333)} % 1,,200/ 0,,333333
],
expect(Prog, [], {1, 8#102}, ?DEFAULT_FLAGS,
[ {#ea{section = 1, offset = 1, islocal = false}, 8#434343} % AC1 = 0,,434343
]).
%% Common code to run short sequences ==========================================
expect(Prog, ACs, ExpectedPC, ExpectedFlags, ExpectedEs) ->