From 9f273f13ec33aec56dd7ee58708d8f3e712d2c6e Mon Sep 17 00:00:00 2001
From: Mikael Pettersson <mikpelinux@gmail.com>
Date: Sat, 25 Jul 2020 15:08:26 +0200
Subject: [PATCH] sim: sim_boolean: handle SETCAM, add unit test

---
 erlang/apps/sim/src/sim_boolean.erl        |  9 +++++++++
 erlang/apps/sim/src/sim_core.erl           |  1 +
 erlang/apps/sim/test/sim_boolean_tests.erl | 12 ++++++++++++
 3 files changed, 22 insertions(+)

diff --git a/erlang/apps/sim/src/sim_boolean.erl b/erlang/apps/sim/src/sim_boolean.erl
index 00f52cd..3af5ae5 100644
--- a/erlang/apps/sim/src/sim_boolean.erl
+++ b/erlang/apps/sim/src/sim_boolean.erl
@@ -49,6 +49,7 @@
         , handle_IORI/4
         , handle_IORM/4
         , handle_SETCA/4
+        , handle_SETCAM/4
         , handle_SETMB/4
         , handle_SETMI/4
         , handle_SETMM/4
@@ -524,6 +525,14 @@ handle_SETCA(Core, Mem, IR, _EA) ->
   Word = (bnot CA) band ((1 bsl 36) - 1),
   sim_core:next_pc(sim_core:set_ac(Core, AC, Word), Mem).
 
+-spec handle_SETCAM(#core{}, sim_mem:mem(), IR :: word(), #ea{})
+      -> {#core{}, sim_mem:mem(), {ok, integer()} | {error, {module(), term()}}}.
+handle_SETCAM(Core, Mem, IR, EA) ->
+  AC = IR band 8#17,
+  CA = sim_core:get_ac(Core, AC),
+  Word = (bnot CA) band ((1 bsl 36) - 1),
+  handle_ANDM_1(Core, Mem, EA, Word).
+
 %% Miscellaneous ===============================================================
 
 ea_address(#ea{section = Section, offset = Offset}) ->
diff --git a/erlang/apps/sim/src/sim_core.erl b/erlang/apps/sim/src/sim_core.erl
index 6577a50..5812a96 100644
--- a/erlang/apps/sim/src/sim_core.erl
+++ b/erlang/apps/sim/src/sim_core.erl
@@ -295,6 +295,7 @@ dispatch(Core, Mem, IR, EA) ->
     8#447 -> sim_boolean:handle_EQVB(Core, Mem, IR, EA);
     8#450 -> sim_boolean:handle_SETCA(Core, Mem, IR, EA);
     8#451 -> sim_boolean:handle_SETCA(Core, Mem, IR, EA); % SETCAI = SETCA
+    8#452 -> sim_boolean:handle_SETCAM(Core, Mem, IR, EA);
     _ ->
       PC = (Core#core.pc_section bsl 18) bor Core#core.pc_offset,
       {Core, Mem, {error, {?MODULE, {dispatch, PC, IR, EA}}}}
diff --git a/erlang/apps/sim/test/sim_boolean_tests.erl b/erlang/apps/sim/test/sim_boolean_tests.erl
index e95706b..ecb11a3 100644
--- a/erlang/apps/sim/test/sim_boolean_tests.erl
+++ b/erlang/apps/sim/test/sim_boolean_tests.erl
@@ -86,6 +86,7 @@
 -define(OP_EQVB, 8#447).
 -define(OP_SETCA, 8#450).
 -define(OP_SETCAI, 8#451).
+-define(OP_SETCAM, 8#452).
 
 %% 2.4 Boolean Functions =======================================================
 
@@ -598,6 +599,17 @@ setcai_test() ->
          [ {#ea{section = 1, offset = 1, islocal = false}, ?COMMA2(-1, 8#070707)} % AC1 = -1,,070707
          ]).
 
+setcam_test() ->
+  Prog =
+    [ {1, 8#100, ?INSN(?OP_MOVEI, 1, 0, 0, 8#707070)} % 1,,100/ MOVEI 1,707070
+    , {1, 8#101, ?INSN(?OP_SETCAM, 1, 0, 0, 8#200)}   % 1,,101/ SETCAM 1,200
+    , {1, 8#102, ?INSN_INVALID}                       % 1,,102/ <invalid>
+    , {1, 8#200, 0}                                   % 1,,200/ 0
+    ],
+  expect(Prog, [], {1, 8#102}, ?DEFAULT_FLAGS,
+         [ {#ea{section = 1, offset = 8#200, islocal = false}, ?COMMA2(-1, 8#070707)} % C(1,,200) = -1,,070707
+         ]).
+
 %% Common code to run short sequences ==========================================
 
 expect(Prog, ACs, ExpectedPC, ExpectedFlags, ExpectedEs) ->