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Diffstat (limited to 'lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_asm.erl')
| -rw-r--r-- | lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_asm.erl | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_asm.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_asm.erl new file mode 100644 index 0000000000..c2d9edcaa7 --- /dev/null +++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_asm.erl @@ -0,0 +1,358 @@ +%% ``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 via the world wide web at http://www.erlang.org/. +%% +%% 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. +%% +%% The Initial Developer of the Original Code is Ericsson Utvecklings AB. +%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings +%% AB. All Rights Reserved.'' +%% +%% $Id: beam_asm.erl,v 1.1 2008/12/17 09:53:40 mikpe Exp $ +%% +%% Purpose : Assembler for threaded Beam. + +-module(beam_asm). + +-export([module/4,format_error/1]). +-export([encode/2]). + +-import(lists, [map/2,member/2,keymember/3,duplicate/2]). +-include("beam_opcodes.hrl"). + +-define(bs_aligned, 1). + +module(Code, Abst, SourceFile, Opts) -> + case assemble(Code, Abst, SourceFile, Opts) of + {error, Error} -> + {error, [{none, ?MODULE, Error}]}; + Bin when binary(Bin) -> + {ok, Bin} + end. + +format_error({crashed, Why}) -> + io_lib:format("beam_asm_int: EXIT: ~p", [Why]). + +assemble({Mod,Exp,Attr,Asm,NumLabels}, Abst, SourceFile, Opts) -> + {1,Dict0} = beam_dict:atom(Mod, beam_dict:new()), + NumFuncs = length(Asm), + {Code,Dict1} = assemble_1(Asm, Exp, Dict0, []), + build_file(Code, Attr, Dict1, NumLabels, NumFuncs, Abst, SourceFile, Opts). + +assemble_1([{function,Name,Arity,Entry,Asm}|T], Exp, Dict0, Acc) -> + Dict1 = case member({Name,Arity}, Exp) of + true -> + beam_dict:export(Name, Arity, Entry, Dict0); + false -> + beam_dict:local(Name, Arity, Entry, Dict0) + end, + {Code, Dict2} = assemble_function(Asm, Acc, Dict1), + assemble_1(T, Exp, Dict2, Code); +assemble_1([], _Exp, Dict0, Acc) -> + {IntCodeEnd,Dict1} = make_op(int_code_end, Dict0), + {list_to_binary(lists:reverse(Acc, [IntCodeEnd])),Dict1}. + +assemble_function([H|T], Acc, Dict0) -> + {Code, Dict} = make_op(H, Dict0), + assemble_function(T, [Code| Acc], Dict); +assemble_function([], Code, Dict) -> + {Code, Dict}. + +build_file(Code, Attr, Dict, NumLabels, NumFuncs, Abst, SourceFile, Opts) -> + %% Create the code chunk. + + CodeChunk = chunk(<<"Code">>, + <<16:32, + (beam_opcodes:format_number()):32, + (beam_dict:highest_opcode(Dict)):32, + NumLabels:32, + NumFuncs:32>>, + Code), + + %% Create the atom table chunk. + + {NumAtoms, AtomTab} = beam_dict:atom_table(Dict), + AtomChunk = chunk(<<"Atom">>, <<NumAtoms:32>>, AtomTab), + + %% Create the import table chunk. + + {NumImps, ImpTab0} = beam_dict:import_table(Dict), + Imp = flatten_imports(ImpTab0), + ImportChunk = chunk(<<"ImpT">>, <<NumImps:32>>, Imp), + + %% Create the export table chunk. + + {NumExps, ExpTab0} = beam_dict:export_table(Dict), + Exp = flatten_exports(ExpTab0), + ExpChunk = chunk(<<"ExpT">>, <<NumExps:32>>, Exp), + + %% Create the local function table chunk. + + {NumLocals, Locals} = beam_dict:local_table(Dict), + Loc = flatten_exports(Locals), + LocChunk = chunk(<<"LocT">>, <<NumLocals:32>>, Loc), + + %% Create the string table chunk. + + {_,StringTab} = beam_dict:string_table(Dict), + StringChunk = chunk(<<"StrT">>, StringTab), + + %% Create the fun table chunk. It is important not to build an empty chunk, + %% as that would change the MD5. + + LambdaChunk = case beam_dict:lambda_table(Dict) of + {0,[]} -> []; + {NumLambdas,LambdaTab} -> + chunk(<<"FunT">>, <<NumLambdas:32>>, LambdaTab) + end, + + %% Create the attributes and compile info chunks. + + Essentials = [AtomChunk,CodeChunk,StringChunk,ImportChunk,ExpChunk,LambdaChunk], + {Attributes,Compile} = build_attributes(Opts, SourceFile, Attr, Essentials), + AttrChunk = chunk(<<"Attr">>, Attributes), + CompileChunk = chunk(<<"CInf">>, Compile), + + %% Create the abstract code chunk. + + AbstChunk = chunk(<<"Abst">>, Abst), + + %% Create IFF chunk. + + Chunks = case member(slim, Opts) of + true -> [Essentials,AttrChunk,CompileChunk,AbstChunk]; + false -> [Essentials,LocChunk,AttrChunk,CompileChunk,AbstChunk] + end, + build_form(<<"BEAM">>, Chunks). + +%% Build an IFF form. + +build_form(Id, Chunks0) when size(Id) == 4, list(Chunks0) -> + Chunks = list_to_binary(Chunks0), + Size = size(Chunks), + 0 = Size rem 4, % Assertion: correct padding? + <<"FOR1",(Size+4):32,Id/binary,Chunks/binary>>. + +%% Build a correctly padded chunk (with no sub-header). + +chunk(Id, Contents) when size(Id) == 4, binary(Contents) -> + Size = size(Contents), + [<<Id/binary,Size:32>>,Contents|pad(Size)]; +chunk(Id, Contents) when list(Contents) -> + chunk(Id, list_to_binary(Contents)). + +%% Build a correctly padded chunk (with a sub-header). + +chunk(Id, Head, Contents) when size(Id) == 4, is_binary(Head), is_binary(Contents) -> + Size = size(Head)+size(Contents), + [<<Id/binary,Size:32,Head/binary>>,Contents|pad(Size)]; +chunk(Id, Head, Contents) when list(Contents) -> + chunk(Id, Head, list_to_binary(Contents)). + +pad(Size) -> + case Size rem 4 of + 0 -> []; + Rem -> duplicate(4 - Rem, 0) + end. + +flatten_exports(Exps) -> + list_to_binary(map(fun({F,A,L}) -> <<F:32,A:32,L:32>> end, Exps)). + +flatten_imports(Imps) -> + list_to_binary(map(fun({M,F,A}) -> <<M:32,F:32,A:32>> end, Imps)). + +build_attributes(Opts, SourceFile, Attr, Essentials) -> + Misc = case member(slim, Opts) of + false -> + {{Y,Mo,D},{H,Mi,S}} = erlang:universaltime(), + [{time,{Y,Mo,D,H,Mi,S}},{source,SourceFile}]; + true -> [] + end, + Compile = [{options,Opts},{version,?COMPILER_VSN}|Misc], + {term_to_binary(calc_vsn(Attr, Essentials)),term_to_binary(Compile)}. + +%% +%% If the attributes contains no 'vsn' attribute, we'll insert one +%% with an MD5 "checksum" calculated on the code as its value. +%% We'll not change an existing 'vsn' attribute. +%% + +calc_vsn(Attr, Essentials) -> + case keymember(vsn, 1, Attr) of + true -> Attr; + false -> + <<Number:128>> = erlang:md5(Essentials), + [{vsn,[Number]}|Attr] + end. + +bif_type('-', 1) -> negate; +bif_type('+', 2) -> {op, m_plus}; +bif_type('-', 2) -> {op, m_minus}; +bif_type('*', 2) -> {op, m_times}; +bif_type('/', 2) -> {op, m_div}; +bif_type('div', 2) -> {op, int_div}; +bif_type('rem', 2) -> {op, int_rem}; +bif_type('band', 2) -> {op, int_band}; +bif_type('bor', 2) -> {op, int_bor}; +bif_type('bxor', 2) -> {op, int_bxor}; +bif_type('bsl', 2) -> {op, int_bsl}; +bif_type('bsr', 2) -> {op, int_bsr}; +bif_type('bnot', 1) -> {op, int_bnot}; +bif_type(fnegate, 1) -> {op, fnegate}; +bif_type(fadd, 2) -> {op, fadd}; +bif_type(fsub, 2) -> {op, fsub}; +bif_type(fmul, 2) -> {op, fmul}; +bif_type(fdiv, 2) -> {op, fdiv}; +bif_type(_, _) -> bif. + +make_op(Comment, Dict) when element(1, Comment) == '%' -> + {[],Dict}; +make_op({'%live',_R}, Dict) -> + {[],Dict}; +make_op({bif, Bif, nofail, [], Dest}, Dict) -> + encode_op(bif0, [{extfunc, erlang, Bif, 0}, Dest], Dict); +make_op({bif, raise, _Fail, [A1,A2], _Dest}, Dict) -> + encode_op(raise, [A1,A2], Dict); +make_op({bif, Bif, Fail, Args, Dest}, Dict) -> + Arity = length(Args), + case bif_type(Bif, Arity) of + {op, Op} -> + make_op(list_to_tuple([Op, Fail|Args++[Dest]]), Dict); + negate -> + %% Fake negation operator. + make_op({m_minus, Fail, {integer,0}, hd(Args), Dest}, Dict); + bif -> + BifOp = list_to_atom(lists:concat([bif, Arity])), + encode_op(BifOp, [Fail, {extfunc, erlang, Bif, Arity}|Args++[Dest]], + Dict) + end; +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,Ops}, Dict) when list(Ops) -> + encode_op(Cond, [Fail|Ops], Dict); +make_op({make_fun2,{f,Lbl},Index,OldUniq,NumFree}, Dict0) -> + {Fun,Dict} = beam_dict:lambda(Lbl, Index, OldUniq, NumFree, Dict0), + make_op({make_fun2,Fun}, Dict); +make_op(Op, Dict) when atom(Op) -> + encode_op(Op, [], Dict); +make_op({kill,Y}, Dict) -> + make_op({init,Y}, Dict); +make_op({Name,Arg1}, Dict) -> + encode_op(Name, [Arg1], Dict); +make_op({Name,Arg1,Arg2}, Dict) -> + encode_op(Name, [Arg1,Arg2], Dict); +make_op({Name,Arg1,Arg2,Arg3}, Dict) -> + encode_op(Name, [Arg1,Arg2,Arg3], Dict); +make_op({Name,Arg1,Arg2,Arg3,Arg4}, Dict) -> + encode_op(Name, [Arg1,Arg2,Arg3,Arg4], Dict); +make_op({Name,Arg1,Arg2,Arg3,Arg4,Arg5}, Dict) -> + encode_op(Name, [Arg1,Arg2,Arg3,Arg4,Arg5], Dict); +make_op({Name,Arg1,Arg2,Arg3,Arg4,Arg5,Arg6}, Dict) -> + encode_op(Name, [Arg1,Arg2,Arg3,Arg4,Arg5,Arg6], Dict). + +encode_op(Name, Args, Dict0) when atom(Name) -> + {EncArgs,Dict1} = encode_args(Args, Dict0), + Op = beam_opcodes:opcode(Name, length(Args)), + Dict2 = beam_dict:opcode(Op, Dict1), + {list_to_binary([Op|EncArgs]),Dict2}. + +encode_args([Arg| T], Dict0) -> + {EncArg, Dict1} = encode_arg(Arg, Dict0), + {EncTail, Dict2} = encode_args(T, Dict1), + {[EncArg| EncTail], Dict2}; +encode_args([], Dict) -> + {[], Dict}. + +encode_arg({x, X}, Dict) when X >= 0 -> + {encode(?tag_x, X), Dict}; +encode_arg({y, Y}, Dict) when Y >= 0 -> + {encode(?tag_y, Y), Dict}; +encode_arg({atom, Atom}, Dict0) when atom(Atom) -> + {Index, Dict} = beam_dict:atom(Atom, Dict0), + {encode(?tag_a, Index), Dict}; +encode_arg({integer, N}, Dict) -> + {encode(?tag_i, N), Dict}; +encode_arg(nil, Dict) -> + {encode(?tag_a, 0), Dict}; +encode_arg({f, W}, Dict) -> + {encode(?tag_f, W), Dict}; +encode_arg({'char', C}, Dict) -> + {encode(?tag_h, C), Dict}; +encode_arg({string, String}, Dict0) -> + {Offset, Dict} = beam_dict:string(String, Dict0), + {encode(?tag_u, Offset), Dict}; +encode_arg({extfunc, M, F, A}, Dict0) -> + {Index, Dict} = beam_dict:import(M, F, A, Dict0), + {encode(?tag_u, Index), Dict}; +encode_arg({list, List}, Dict0) -> + {L, Dict} = encode_list(List, Dict0, []), + {[encode(?tag_z, 1), encode(?tag_u, length(List))|L], Dict}; +encode_arg({float, Float}, Dict) when float(Float) -> + {[encode(?tag_z, 0)|<<Float:64/float>>], Dict}; +encode_arg({fr,Fr}, Dict) -> + {[encode(?tag_z, 2),encode(?tag_u,Fr)], Dict}; +encode_arg({field_flags,Flags0}, Dict) -> + Flags = lists:foldl(fun (F, S) -> S bor flag_to_bit(F) end, 0, Flags0), + {encode(?tag_u, Flags), Dict}; +encode_arg({alloc,List}, Dict) -> + {encode_alloc_list(List),Dict}; +encode_arg(Int, Dict) when is_integer(Int) -> + {encode(?tag_u, Int),Dict}. + +flag_to_bit(aligned) -> 16#01; +flag_to_bit(little) -> 16#02; +flag_to_bit(big) -> 16#00; +flag_to_bit(signed) -> 16#04; +flag_to_bit(unsigned)-> 16#00; +flag_to_bit(exact) -> 16#08; +flag_to_bit(native) -> 16#10. + +encode_list([H|T], _Dict, _Acc) when is_list(H) -> + exit({illegal_nested_list,encode_arg,[H|T]}); +encode_list([H|T], Dict0, Acc) -> + {Enc,Dict} = encode_arg(H, Dict0), + encode_list(T, Dict, [Enc|Acc]); +encode_list([], Dict, Acc) -> + {lists:reverse(Acc), Dict}. + +encode_alloc_list(L0) -> + L = encode_alloc_list_1(L0), + [encode(?tag_z, 3),encode(?tag_u, length(L0))|L]. + +encode_alloc_list_1([{words,Words}|T]) -> + [encode(?tag_u, 0),encode(?tag_u, Words)|encode_alloc_list_1(T)]; +encode_alloc_list_1([{floats,Floats}|T]) -> + [encode(?tag_u, 1),encode(?tag_u, Floats)|encode_alloc_list_1(T)]; +encode_alloc_list_1([]) -> []. + +encode(Tag, N) when N < 0 -> + 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, Bytes) -> + case length(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(0, [B|Acc]) when B < 128 -> + [B|Acc]; +to_bytes(N, Acc) -> + to_bytes(N bsr 8, [N band 16#ff| Acc]). + +negative_to_bytes(-1, [B1, B2|T]) when B1 > 127 -> + [B1, B2|T]; +negative_to_bytes(N, Acc) -> + negative_to_bytes(N bsr 8, [N band 16#ff|Acc]). |