diff options
Diffstat (limited to 'lib/compiler/src/beam_asm.erl')
| -rw-r--r-- | lib/compiler/src/beam_asm.erl | 61 |
1 files changed, 28 insertions, 33 deletions
diff --git a/lib/compiler/src/beam_asm.erl b/lib/compiler/src/beam_asm.erl index f7c838e392..df0321e85a 100644 --- a/lib/compiler/src/beam_asm.erl +++ b/lib/compiler/src/beam_asm.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2017. All Rights Reserved. +%% Copyright Ericsson AB 1996-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -21,10 +21,10 @@ -module(beam_asm). --export([module/5]). +-export([module/4]). -export([encode/2]). --export_type([fail/0,label/0,reg/0,src/0,module_code/0,function_name/0]). +-export_type([fail/0,label/0,reg/0,reg_num/0,src/0,module_code/0,function_name/0]). -import(lists, [map/2,member/2,keymember/3,duplicate/2,splitwith/2]). -include("beam_opcodes.hrl"). @@ -55,20 +55,20 @@ -type module_code() :: {module(),[_],[_],[asm_function()],pos_integer()}. --spec module(module_code(), [{binary(), binary()}], [_], [compile:option()], [compile:option()]) -> +-spec module(module_code(), [{binary(), binary()}], [{atom(),term()}], [compile:option()]) -> {'ok',binary()}. -module(Code, ExtraChunks, SourceFile, Opts, CompilerOpts) -> - {ok,assemble(Code, ExtraChunks, SourceFile, Opts, CompilerOpts)}. +module(Code, ExtraChunks, CompileInfo, CompilerOpts) -> + {ok,assemble(Code, ExtraChunks, CompileInfo, CompilerOpts)}. -assemble({Mod,Exp0,Attr0,Asm0,NumLabels}, ExtraChunks, SourceFile, Opts, CompilerOpts) -> +assemble({Mod,Exp0,Attr0,Asm0,NumLabels}, ExtraChunks, CompileInfo, CompilerOpts) -> {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, ExtraChunks, SourceFile, Opts, CompilerOpts). + build_file(Code, Attr, Dict2, NumLabels, NumFuncs, ExtraChunks, CompileInfo, CompilerOpts). on_load(Fs0, Attr0) -> case proplists:get_value(on_load, Attr0) of @@ -111,7 +111,7 @@ assemble_function([H|T], Acc, Dict0) -> assemble_function([], Code, Dict) -> {Code, Dict}. -build_file(Code, Attr, Dict, NumLabels, NumFuncs, ExtraChunks, SourceFile, Opts, CompilerOpts) -> +build_file(Code, Attr, Dict, NumLabels, NumFuncs, ExtraChunks, CompileInfo, CompilerOpts) -> %% Create the code chunk. CodeChunk = chunk(<<"Code">>, @@ -182,8 +182,7 @@ build_file(Code, Attr, Dict, NumLabels, NumFuncs, ExtraChunks, SourceFile, Opts, Essentials1 = [iolist_to_binary(C) || C <- Essentials0], MD5 = module_md5(Essentials1), Essentials = finalize_fun_table(Essentials1, MD5), - {Attributes,Compile} = build_attributes(Opts, CompilerOpts, SourceFile, - Attr, MD5), + {Attributes,Compile} = build_attributes(Attr, CompileInfo, MD5), AttrChunk = chunk(<<"Attr">>, Attributes), CompileChunk = chunk(<<"CInf">>, Compile), @@ -193,7 +192,7 @@ build_file(Code, Attr, Dict, NumLabels, NumFuncs, ExtraChunks, SourceFile, Opts, %% Create IFF chunk. - Chunks = case member(slim, Opts) of + Chunks = case member(slim, CompilerOpts) of true -> [Essentials,AttrChunk]; false -> @@ -241,9 +240,7 @@ build_form(Id, Chunks0) when byte_size(Id) =:= 4, is_list(Chunks0) -> chunk(Id, Contents) when byte_size(Id) =:= 4, is_binary(Contents) -> Size = byte_size(Contents), - [<<Id/binary,Size:32>>,Contents|pad(Size)]; -chunk(Id, Contents) when is_list(Contents) -> - chunk(Id, list_to_binary(Contents)). + [<<Id/binary,Size:32>>,Contents|pad(Size)]. %% Build a correctly padded chunk (with a sub-header). @@ -265,22 +262,10 @@ flatten_exports(Exps) -> flatten_imports(Imps) -> list_to_binary(map(fun({M,F,A}) -> <<M:32,F:32,A:32>> end, Imps)). -build_attributes(Opts, CompilerOpts, SourceFile, Attr, MD5) -> - Misc0 = case SourceFile of - [] -> []; - [_|_] -> [{source,SourceFile}] - end, - Misc = case member(slim, CompilerOpts) of - false -> Misc0; - true -> [] - end, - Compile = case member(deterministic, CompilerOpts) of - false -> - [{options,Opts},{version,?COMPILER_VSN}|Misc]; - true -> - [{version,?COMPILER_VSN}] - end, - {term_to_binary(set_vsn_attribute(Attr, MD5)),term_to_binary(Compile)}. +build_attributes(Attr, Compile, MD5) -> + AttrBinary = term_to_binary(set_vsn_attribute(Attr, MD5)), + CompileBinary = term_to_binary([{version,?COMPILER_VSN}|Compile]), + {AttrBinary,CompileBinary}. build_line_table(Dict) -> {NumLineInstrs,NumFnames0,Fnames0,NumLines,Lines0} = @@ -422,7 +407,17 @@ encode_arg({atom, Atom}, Dict0) when is_atom(Atom) -> {Index, Dict} = beam_dict:atom(Atom, Dict0), {encode(?tag_a, Index), Dict}; encode_arg({integer, N}, Dict) -> - {encode(?tag_i, N), Dict}; + %% Conservatily assume that all integers whose absolute + %% value is greater than 1 bsl 128 will be bignums in + %% the runtime system. + if + N >= 1 bsl 128 -> + encode_arg({literal, N}, Dict); + N =< -(1 bsl 128) -> + encode_arg({literal, N}, Dict); + true -> + {encode(?tag_i, N), Dict} + end; encode_arg(nil, Dict) -> {encode(?tag_a, 0), Dict}; encode_arg({f, W}, Dict) -> @@ -480,7 +475,7 @@ encode_alloc_list_1([{floats,Floats}|T], Dict, Acc0) -> encode_alloc_list_1([], Dict, Acc) -> {iolist_to_binary(Acc),Dict}. --spec encode(non_neg_integer(), pos_integer()) -> iodata(). +-spec encode(non_neg_integer(), integer()) -> iolist() | integer(). encode(Tag, N) when N < 0 -> encode1(Tag, negative_to_bytes(N)); |