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sim: sim_halfword: handle HRLE/HRLEI/HRLEM/HRLES, add unit tests

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This commit is contained in:
Mikael Pettersson
2020-07-27 18:28:26 +02:00
parent b5ef0e112e
commit 187178e48a
3 changed files with 113 additions and 0 deletions
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4
erlang/apps/sim/src/sim_core.erl
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@@ -345,6 +345,10 @@ dispatch(Core, Mem, IR, EA) ->
8#531 -> sim_boolean:handle_SETZ(Core, Mem, IR, EA); % HLLEI = HLLZI = SETZ
8#532 -> sim_halfword:handle_HLLEM(Core, Mem, IR, EA);
8#533 -> sim_halfword:handle_HLLES(Core, Mem, IR, EA);
8#534 -> sim_halfword:handle_HRLE(Core, Mem, IR, EA);
8#535 -> sim_halfword:handle_HRLEI(Core, Mem, IR, EA);
8#536 -> sim_halfword:handle_HRLEM(Core, Mem, IR, EA);
8#537 -> sim_halfword:handle_HRLES(Core, Mem, IR, EA);
_ ->
PC = (Core#core.pc_section bsl 18) bor Core#core.pc_offset,
{Core, Mem, {error, {?MODULE, {dispatch, PC, IR, EA}}}}

47
erlang/apps/sim/src/sim_halfword.erl
View File

@@ -39,6 +39,10 @@
, handle_HLLZM/4
, handle_HLLZS/4
, handle_HRL/4
, handle_HRLE/4
, handle_HRLEI/4
, handle_HRLEM/4
, handle_HRLES/4
, handle_HRLI/4
, handle_HRLM/4
, handle_HRLO/4
@@ -361,6 +365,49 @@ handle_HRLOS(Core, Mem, IR, EA) ->
fun(Core1, Mem1) -> ?FUNCTION_NAME(Core1, Mem1, IR, EA) end)
end.
%% HRLE - Half Word Right to Left, Extend
-spec handle_HRLE(#core{}, sim_mem:mem(), IR :: word(), #ea{})
-> {#core{}, sim_mem:mem(), {ok, integer()} | {error, {module(), term()}}}.
handle_HRLE(Core, Mem, IR, EA) ->
case sim_core:c(Core, Mem, EA) of
{ok, CE} ->
AC = IR band 8#17,
Word = set_left_extend(get_right(CE)),
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) -> ?FUNCTION_NAME(Core1, Mem1, IR, EA) end)
end.
-spec handle_HRLEI(#core{}, sim_mem:mem(), IR :: word(), #ea{})
-> {#core{}, sim_mem:mem(), {ok, integer()} | {error, {module(), term()}}}.
handle_HRLEI(Core, Mem, IR, EA) ->
AC = IR band 8#17,
Word = set_left_extend(EA#ea.offset),
sim_core:next_pc(sim_core:set_ac(Core, AC, Word), Mem).
-spec handle_HRLEM(#core{}, sim_mem:mem(), IR :: word(), #ea{})
-> {#core{}, sim_mem:mem(), {ok, integer()} | {error, {module(), term()}}}.
handle_HRLEM(Core, Mem, IR, EA) ->
AC = IR band 8#17,
CA = sim_core:get_ac(Core, AC),
Word = set_left_extend(get_right(CA)),
handle_writeback(Core, Mem, EA, Word).
-spec handle_HRLES(#core{}, sim_mem:mem(), IR :: word(), #ea{})
-> {#core{}, sim_mem:mem(), {ok, integer()} | {error, {module(), term()}}}.
handle_HRLES(Core, Mem, IR, EA) ->
case sim_core:c(Core, Mem, EA) of
{ok, CE} ->
AC = IR band 8#17,
Word = set_left_extend(get_right(CE)),
handle_writeback(Core, Mem, AC, EA, Word);
{error, Reason} ->
sim_core:page_fault(Core, Mem, ea_address(EA), read, Reason,
fun(Core1, Mem1) -> ?FUNCTION_NAME(Core1, Mem1, IR, EA) end)
end.
%% Miscellaneous ===============================================================
handle_writeback(Core, Mem, EA, Word) ->