Merge branch 'maint'

* maint:
  Add a smoke test of erts_debug:df/1
  Correct disassembly of the i_get_map_elements instruction

2 files changed, 62 insertions, 12 deletions

diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c
index c756de8c8e..8a35ad17c6 100644
--- a/erts/emulator/beam/beam_debug.c
+++ b/erts/emulator/beam/beam_debug.c
@@ -669,7 +669,6 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
     case op_new_map_dII:
     case op_update_map_assoc_jsdII:
     case op_update_map_exact_jsdII:
-    case op_i_get_map_elements_fsI:
 	{
 	    int n = unpacked[-1];
 
@@ -693,6 +692,32 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
 	    }
 	}
 	break;
+    case op_i_get_map_elements_fsI:
+	{
+	    int n = unpacked[-1];
+
+	    while (n > 0) {
+		if (n % 3 == 1) {
+		    erts_print(to, to_arg, " %X", ap[0]);
+		} else if (!is_header(ap[0])) {
+		    erts_print(to, to_arg, " %T", (Eterm) ap[0]);
+		} else {
+		    switch ((ap[0] >> 2) & 0x03) {
+		    case R_REG_DEF:
+			erts_print(to, to_arg, " x(0)");
+			break;
+		    case X_REG_DEF:
+			erts_print(to, to_arg, " x(%d)", ap[0] >> 4);
+			break;
+		    case Y_REG_DEF:
+			erts_print(to, to_arg, " y(%d)", ap[0] >> 4);
+			break;
+		    }
+		}
+		ap++, size++, n--;
+	    }
+	}
+	break;
     }
     erts_print(to, to_arg, "\n");
 
diff --git a/erts/emulator/test/erts_debug_SUITE.erl b/erts/emulator/test/erts_debug_SUITE.erl
index 3dd77eb920..35677f9953 100644
--- a/erts/emulator/test/erts_debug_SUITE.erl
+++ b/erts/emulator/test/erts_debug_SUITE.erl
@@ -139,23 +139,48 @@ flat_size_big_1(Term, Size0, Limit) when Size0 < Limit ->
 flat_size_big_1(_, _, _) -> ok.
 
 df(Config) when is_list(Config) ->
-    ?line P0 = pps(),
-    ?line PrivDir = ?config(priv_dir, Config),
-    ?line ok = file:set_cwd(PrivDir),
-    ?line erts_debug:df(?MODULE),
-    ?line Beam = filename:join(PrivDir, ?MODULE_STRING++".dis"),
-    ?line {ok,Bin} = file:read_file(Beam),
-    ?line ok = io:put_chars(binary_to_list(Bin)),
-    ?line ok = file:delete(Beam),
-    ?line true = (P0 == pps()),    
+    P0 = pps(),
+    PrivDir = ?config(priv_dir, Config),
+    ok = file:set_cwd(PrivDir),
+
+    AllLoaded = [M || {M,_} <- code:all_loaded()],
+    {Pid,Ref} = spawn_monitor(fun() -> df_smoke(AllLoaded) end),
+    receive
+	{'DOWN',Ref,process,Pid,Status} ->
+	    normal = Status
+    after 20*1000 ->
+	    %% Not finished (i.e. a slow computer). Stop now.
+	    Pid ! stop,
+	    receive
+		{'DOWN',Ref,process,Pid,Status} ->
+		    normal = Status,
+		    io:format("...")
+	    end
+    end,
+    io:nl(),
+    _ = [_ = file:delete(atom_to_list(M) ++ ".dis") ||
+	    M <- AllLoaded],
+
+    true = (P0 == pps()),
     ok.
 
+df_smoke([M|Ms]) ->
+    io:format("~p", [M]),
+    erts_debug:df(M),
+    receive
+	stop ->
+	    ok
+    after 0 ->
+	    df_smoke(Ms)
+    end;
+df_smoke([]) -> ok.
+
 pps() ->
     {erlang:ports()}.
 
 instructions(Config) when is_list(Config) ->
-    ?line Is = erts_debug:instructions(),
-    ?line _ = [list_to_atom(I) || I <- Is],
+    Is = erts_debug:instructions(),
+    _ = [list_to_atom(I) || I <- Is],
     ok.
 
 id(I) ->