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sim: sim_moves: handle DMOVNM, add unit test

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This commit is contained in:
Mikael Pettersson 2020-07-17 23:55:52 +02:00
parent 9bc547c6f7
commit ccf68cbf70
3 changed files with 36 additions and 0 deletions
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1
erlang/apps/sim/src/sim_core.erl
View File

@ -234,6 +234,7 @@ dispatch(Core, Mem, IR, EA) ->
8#120 -> sim_moves:handle_DMOVE(Core, Mem, IR, EA);
8#121 -> sim_moves:handle_DMOVN(Core, Mem, IR, EA);
8#124 -> sim_moves:handle_DMOVEM(Core, Mem, IR, EA);
8#125 -> sim_moves:handle_DMOVNM(Core, Mem, IR, EA);
8#200 -> sim_moves:handle_MOVE(Core, Mem, IR, EA);
8#201 -> sim_moves:handle_MOVEI(Core, Mem, IR, EA);
8#202 -> sim_moves:handle_MOVEM(Core, Mem, IR, EA);

20
erlang/apps/sim/src/sim_moves.erl
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@ -28,6 +28,7 @@
, handle_DMOVE/4
, handle_DMOVEM/4
, handle_DMOVN/4
, handle_DMOVNM/4
, handle_MOVE/4
, handle_MOVEI/4
, handle_MOVEM/4
@ -345,6 +346,25 @@ handle_DMOVN(Core, Mem, IR, EA, Word0) ->
fun(Core1, Mem1) -> handle_DMOVN(Core1, Mem1, IR, EA, Word0) end)
end.
%% DMOVNM - Double Move Negative to Memory
-spec handle_DMOVNM(#core{}, sim_mem:mem(), IR :: word(), #ea{})
-> {#core{}, sim_mem:mem(), {ok, integer()} | {error, {module(), term()}}}.
handle_DMOVNM(Core, Mem, IR, EA) ->
AC = IR band 8#17,
Word0 = sim_core:get_ac(Core, AC),
Word1 = sim_core:get_ac(Core, ac_plus_1(AC)),
{Negative0, Negative1, Flags} = dnegate(Word0, Word1),
handle_DMOVNM(Core, Mem, Negative0, Negative1, Flags, EA).
handle_DMOVNM(Core, Mem, Word0, Word1, Flags, EA) ->
case sim_core:cset(Core, Mem, EA, Word0) of
{ok, Core1} -> handle_MOVNM(Core1, Mem, Word1, Flags, ea_plus_1(EA));
{error, Reason} ->
sim_core:page_fault(Core, Mem, ea_address(EA), write, Reason,
fun(Core1, Mem1) -> handle_DMOVNM(Core1, Mem1, Word0, Word1, Flags, EA) end)
end.
%% Miscellaneous ===============================================================
ac_plus_1(AC) ->

15
erlang/apps/sim/test/sim_moves_tests.erl
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@ -46,6 +46,7 @@
-define(OP_DMOVE, 8#120).
-define(OP_DMOVN, 8#121).
-define(OP_DMOVEM, 8#124).
-define(OP_DMOVNM, 8#125).
-define(OP_MOVE, 8#200).
-define(OP_MOVEI, 8#201).
-define(OP_MOVEM, 8#202).
@ -433,6 +434,20 @@ dmovn_minint_test() ->
, {#ea{section = 1, offset = 2, islocal = false}, 0} % AC2 = 0
]).
dmovnm_test() ->
Prog =
[ {1, 8#100, ?INSN(?OP_MOVNI, 1, 0, 0, 1)} % 1,,100/ MOVNI 1,1
, {1, 8#101, ?INSN(?OP_MOVNI, 2, 0, 0, 1)} % 1,,101/ MOVNI 2,1
, {1, 8#102, ?INSN(?OP_DMOVNM, 1, 0, 0, 8#150)} % 1,,102/ DMOVNM 1,150
, {1, 8#103, ?INSN_INVALID} % 1,,103/ <invalid>
, {1, 8#150, 8#27} % 1,,150/ 0,,27
, {1, 8#151, 8#27} % 1,,150/ 0,,27
],
expect(Prog, [], {1, 8#103}, ?DEFAULT_FLAGS,
[ {#ea{section = 1, offset = 8#150, islocal = false}, 0} % C(1,,150) = 0
, {#ea{section = 1, offset = 8#151, islocal = false}, 1} % C(1,,151) = 1
]).
%% Common code to run short sequences ==========================================
expect(Prog, ACs, ExpectedPC, ExpectedFlags, ExpectedEs) ->