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-rw-r--r--lib/compiler/src/beam_asm.erl88
1 files changed, 42 insertions, 46 deletions
diff --git a/lib/compiler/src/beam_asm.erl b/lib/compiler/src/beam_asm.erl
index 112b087f3c..f6ca7a0afb 100644
--- a/lib/compiler/src/beam_asm.erl
+++ b/lib/compiler/src/beam_asm.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -29,11 +30,12 @@
module(Code, Abst, SourceFile, Opts) ->
{ok,assemble(Code, Abst, SourceFile, Opts)}.
-assemble({Mod,Exp,Attr0,Asm0,NumLabels}, Abst, SourceFile, Opts) ->
+assemble({Mod,Exp0,Attr0,Asm0,NumLabels}, Abst, SourceFile, Opts) ->
{1,Dict0} = beam_dict:atom(Mod, beam_dict:new()),
{0,Dict1} = beam_dict:fname(atom_to_list(Mod) ++ ".erl", Dict0),
NumFuncs = length(Asm0),
{Asm,Attr} = on_load(Asm0, Attr0),
+ Exp = cerl_sets:from_list(Exp0),
{Code,Dict2} = assemble_1(Asm, Exp, Dict1, []),
build_file(Code, Attr, Dict2, NumLabels, NumFuncs, Abst, SourceFile, Opts).
@@ -60,7 +62,7 @@ insert_on_load_instruction(Is0, Entry) ->
Bef ++ [El,on_load|Is].
assemble_1([{function,Name,Arity,Entry,Asm}|T], Exp, Dict0, Acc) ->
- Dict1 = case member({Name,Arity}, Exp) of
+ Dict1 = case cerl_sets:is_element({Name,Arity}, Exp) of
true ->
beam_dict:export(Name, Arity, Entry, Dict0);
false ->
@@ -132,10 +134,10 @@ build_file(Code, Attr, Dict, NumLabels, NumFuncs, Abst, SourceFile, Opts) ->
LiteralChunk = case beam_dict:literal_table(Dict) of
{0,[]} -> [];
{NumLiterals,LitTab0} ->
- LitTab1 = iolist_to_binary(LitTab0),
- LitTab2 = <<NumLiterals:32,LitTab1/binary>>,
- LitTab = iolist_to_binary(zlib:compress(LitTab2)),
- chunk(<<"LitT">>, <<(byte_size(LitTab2)):32>>, LitTab)
+ LitTab1 = [<<NumLiterals:32>>,LitTab0],
+ LitTab = zlib:compress(LitTab1),
+ chunk(<<"LitT">>, <<(iolist_size(LitTab1)):32>>,
+ LitTab)
end,
%% Create the line chunk.
@@ -223,10 +225,12 @@ flatten_imports(Imps) ->
list_to_binary(map(fun({M,F,A}) -> <<M:32,F:32,A:32>> end, Imps)).
build_attributes(Opts, SourceFile, Attr, MD5) ->
+ Misc0 = case SourceFile of
+ [] -> [];
+ [_|_] -> [{source,SourceFile}]
+ end,
Misc = case member(slim, Opts) of
- false ->
- {{Y,Mo,D},{H,Mi,S}} = erlang:universaltime(),
- [{time,{Y,Mo,D,H,Mi,S}},{source,SourceFile}];
+ false -> Misc0;
true -> []
end,
Compile = [{options,Opts},{version,?COMPILER_VSN}|Misc],
@@ -324,6 +328,8 @@ make_op({gc_bif,Bif,Fail,Live,Args,Dest}, Dict) ->
encode_op(BifOp, [Fail,Live,{extfunc,erlang,Bif,Arity}|Args++[Dest]],Dict);
make_op({bs_add=Op,Fail,[Src1,Src2,Unit],Dest}, Dict) ->
encode_op(Op, [Fail,Src1,Src2,Unit,Dest], Dict);
+make_op({test,Cond,Fail,Src,{list,_}=Ops}, Dict) ->
+ encode_op(Cond, [Fail,Src,Ops], Dict);
make_op({test,Cond,Fail,Ops}, Dict) when is_list(Ops) ->
encode_op(Cond, [Fail|Ops], Dict);
make_op({test,Cond,Fail,Live,[Op|Ops],Dst}, Dict) when is_list(Ops) ->
@@ -429,45 +435,35 @@ encode_alloc_list_1([], Dict, Acc) ->
{iolist_to_binary(Acc),Dict}.
encode(Tag, N) when N < 0 ->
- encode1(Tag, negative_to_bytes(N, []));
+ encode1(Tag, negative_to_bytes(N));
encode(Tag, N) when N < 16 ->
(N bsl 4) bor Tag;
encode(Tag, N) when N < 16#800 ->
[((N bsr 3) band 2#11100000) bor Tag bor 2#00001000, N band 16#ff];
encode(Tag, N) ->
- encode1(Tag, to_bytes(N, [])).
+ encode1(Tag, to_bytes(N)).
encode1(Tag, Bytes) ->
- case length(Bytes) of
+ case iolist_size(Bytes) of
Num when 2 =< Num, Num =< 8 ->
[((Num-2) bsl 5) bor 2#00011000 bor Tag| Bytes];
Num when 8 < Num ->
[2#11111000 bor Tag, encode(?tag_u, Num-9)| Bytes]
end.
-
-to_bytes(N0, Acc) ->
- Bits = 3*128,
- case N0 bsr Bits of
- 0 ->
- to_bytes_1(N0, Acc);
- N ->
- to_bytes(N, binary_to_list(<<N0:Bits>>) ++ Acc)
- end.
-
-to_bytes_1(0, [B|_]=Done) when B < 128 -> Done;
-to_bytes_1(N, Acc) -> to_bytes(N bsr 8, [N band 16#ff|Acc]).
-
-negative_to_bytes(N0, Acc) ->
- Bits = 3*128,
- case N0 bsr Bits of
- -1 ->
- negative_to_bytes_1(N0, Acc);
- N ->
- negative_to_bytes_1(N, binary_to_list(<<N0:Bits>>) ++ Acc)
+to_bytes(N) ->
+ Bin = binary:encode_unsigned(N),
+ case Bin of
+ <<0:1,_/bits>> -> Bin;
+ <<1:1,_/bits>> -> [0,Bin]
end.
-negative_to_bytes_1(-1, [B1,_B2|_]=Done) when B1 > 127 ->
- Done;
-negative_to_bytes_1(N, Acc) ->
- negative_to_bytes_1(N bsr 8, [N band 16#ff|Acc]).
+negative_to_bytes(N) when N >= -16#8000 ->
+ <<N:16>>;
+negative_to_bytes(N) ->
+ Bytes = byte_size(binary:encode_unsigned(-N)),
+ Bin = <<N:Bytes/unit:8>>,
+ case Bin of
+ <<0:1,_/bits>> -> [16#ff,Bin];
+ <<1:1,_/bits>> -> Bin
+ end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 03:58:03 +0000