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sim: sim_moves: handle DMOVEM, add unit test

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This commit is contained in:
Mikael Pettersson
2020-07-17 20:18:27 +02:00
parent 98249be331
commit 89686df60c
3 changed files with 35 additions and 0 deletions
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1
erlang/apps/sim/src/sim_core.erl
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@@ -232,6 +232,7 @@ dispatch(Core, Mem, IR, EA) ->
case IR bsr 4 of
8#104 -> sim_kernel:handle_JSYS(Core, Mem, IR, EA);
8#120 -> sim_moves:handle_DMOVE(Core, Mem, IR, EA);
8#124 -> sim_moves:handle_DMOVEM(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);

19
erlang/apps/sim/src/sim_moves.erl
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@@ -26,6 +26,7 @@
-export([ handle_EXCH/4
, handle_DMOVE/4
, handle_DMOVEM/4
, handle_MOVE/4
, handle_MOVEI/4
, handle_MOVEM/4
@@ -298,6 +299,24 @@ handle_DMOVE(Core, Mem, IR, EA, Word0) ->
fun(Core1, Mem1) -> handle_DMOVE(Core1, Mem1, IR, EA, Word0) end)
end.
%% DMOVEM - Double Move to Memory
-spec handle_DMOVEM(#core{}, sim_mem:mem(), IR :: word(), #ea{})
-> {#core{}, sim_mem:mem(), {ok, integer()} | {error, {module(), term()}}}.
handle_DMOVEM(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)),
handle_DMOVEM(Core, Mem, Word0, Word1, EA).
handle_DMOVEM(Core, Mem, Word0, Word1, EA) ->
case sim_core:cset(Core, Mem, EA, Word0) of
{ok, Core1} -> handle_MOVEM_1(Core1, Mem, Word1, ea_plus_1(EA));
{error, Reason} ->
sim_core:page_fault(Core, Mem, ea_address(EA), write, Reason,
fun(Core1, Mem1) -> handle_DMOVEM(Core1, Mem1, Word0, Word1, EA) end)
end.
%% Miscellaneous ===============================================================
ac_plus_1(AC) ->

15
erlang/apps/sim/test/sim_moves_tests.erl
View File

@@ -44,6 +44,7 @@
-define(OP_INVALID, 0).
-define(OP_DMOVE, 8#120).
-define(OP_DMOVEM, 8#124).
-define(OP_MOVE, 8#200).
-define(OP_MOVEI, 8#201).
-define(OP_MOVEM, 8#202).
@@ -377,6 +378,20 @@ dmove_test() ->
, {#ea{section = 1, offset = 0, islocal = false}, 8#27} % AC0 = 27
]).
dmovem_test() ->
Prog =
[ {1, 8#100, ?INSN(?OP_MOVEI, 1, 0, 0, 8#42)} % 1,,100/ MOVEI 1,42
, {1, 8#101, ?INSN(?OP_MOVEI, 2, 0, 0, 8#27)} % 1,,101/ MOVEI 2,27
, {1, 8#102, ?INSN(?OP_DMOVEM, 1, 0, 0, 8#150)} % 1,,102/ MOVEM 1,150
, {1, 8#103, ?INSN_INVALID} % 1,,103/ <invalid>
, {1, 8#150, 0} % 1,,150/ 0
, {1, 8#151, 0} % 1,,151/ 0
],
expect(Prog, [], {1, 8#103}, ?DEFAULT_FLAGS,
[ {#ea{section = 1, offset = 8#150, islocal = false}, 8#42} % C(1,,150) = 42
, {#ea{section = 1, offset = 8#151, islocal = false}, 8#27} % C(1,,151) = 27
]).
%% Common code to run short sequences ==========================================
expect(Prog, ACs, ExpectedPC, ExpectedFlags, ExpectedEs) ->