diff options
| -rw-r--r-- | lib/compiler/src/beam_asm.erl | 45 | ||||
| -rw-r--r-- | lib/compiler/src/beam_dict.erl | 53 | ||||
| -rw-r--r-- | lib/compiler/src/beam_disasm.erl | 27 | ||||
| -rw-r--r-- | lib/hipe/icode/hipe_beam_to_icode.erl | 6 |
4 files changed, 109 insertions, 22 deletions
diff --git a/lib/compiler/src/beam_asm.erl b/lib/compiler/src/beam_asm.erl index d56aeae524..6e63c4d0f2 100644 --- a/lib/compiler/src/beam_asm.erl +++ b/lib/compiler/src/beam_asm.erl @@ -31,10 +31,11 @@ module(Code, Abst, SourceFile, Opts) -> assemble({Mod,Exp,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), - {Code,Dict1} = assemble_1(Asm, Exp, Dict0, []), - build_file(Code, Attr, Dict1, NumLabels, NumFuncs, Abst, SourceFile, Opts). + {Code,Dict2} = assemble_1(Asm, Exp, Dict1, []), + build_file(Code, Attr, Dict2, NumLabels, NumFuncs, Abst, SourceFile, Opts). on_load(Fs0, Attr0) -> case proplists:get_value(on_load, Attr0) of @@ -136,7 +137,10 @@ build_file(Code, Attr, Dict, NumLabels, NumFuncs, Abst, SourceFile, Opts) -> LitTab = iolist_to_binary(zlib:compress(LitTab2)), chunk(<<"LitT">>, <<(byte_size(LitTab2)):32>>, LitTab) end, + + %% Create the line chunk. + LineChunk = chunk(<<"Line">>, build_line_table(Dict)), %% Create the attributes and compile info chunks. @@ -154,8 +158,11 @@ build_file(Code, Attr, Dict, NumLabels, NumFuncs, Abst, SourceFile, Opts) -> %% Create IFF chunk. Chunks = case member(slim, Opts) of - true -> [Essentials,AttrChunk,AbstChunk]; - false -> [Essentials,LocChunk,AttrChunk,CompileChunk,AbstChunk] + true -> + [Essentials,AttrChunk,AbstChunk]; + false -> + [Essentials,LocChunk,AttrChunk, + CompileChunk,AbstChunk,LineChunk] end, build_form(<<"BEAM">>, Chunks). @@ -205,6 +212,31 @@ build_attributes(Opts, SourceFile, Attr, Essentials) -> Compile = [{options,Opts},{version,?COMPILER_VSN}|Misc], {term_to_binary(calc_vsn(Attr, Essentials)),term_to_binary(Compile)}. +build_line_table(Dict) -> + {NumLineInstrs,NumFnames0,Fnames0,NumLines,Lines0} = + beam_dict:line_table(Dict), + NumFnames = NumFnames0 - 1, + [_|Fnames1] = Fnames0, + Fnames2 = [unicode:characters_to_binary(F) || F <- Fnames1], + Fnames = << <<(byte_size(F)):16,F/binary>> || F <- Fnames2 >>, + Lines1 = encode_line_items(Lines0, 0), + Lines = iolist_to_binary(Lines1), + Ver = 0, + Bits = 0, + <<Ver:32,Bits:32,NumLineInstrs:32,NumLines:32,NumFnames:32, + Lines/binary,Fnames/binary>>. + +%% encode_line_items([{FnameIndex,Line}], PrevFnameIndex) +%% Encode the line items compactly. Tag the FnameIndex with +%% an 'a' tag (atom) and only include it when it has changed. +%% Tag the line numbers with an 'i' (integer) tag. + +encode_line_items([{F,L}|T], F) -> + [encode(?tag_i, L)|encode_line_items(T, F)]; +encode_line_items([{F,L}|T], _) -> + [encode(?tag_a, F),encode(?tag_i, L)|encode_line_items(T, F)]; +encode_line_items([], _) -> []. + %% %% If the attributes contains no 'vsn' attribute, we'll insert one %% with an MD5 "checksum" calculated on the code as its value. @@ -247,8 +279,9 @@ bif_type(_, 2) -> bif2. make_op({'%',_}, Dict) -> {[],Dict}; -make_op({line,_}, Dict) -> - encode_op(line, [0], Dict); +make_op({line,Location}, Dict0) -> + {Index,Dict} = beam_dict:line(Location, Dict0), + encode_op(line, [Index], Dict); make_op({bif, Bif, {f,_}, [], Dest}, Dict) -> %% BIFs without arguments cannot fail. encode_op(bif0, [{extfunc, erlang, Bif, 0}, Dest], Dict); diff --git a/lib/compiler/src/beam_dict.erl b/lib/compiler/src/beam_dict.erl index c50ed28aa9..ee76623976 100644 --- a/lib/compiler/src/beam_dict.erl +++ b/lib/compiler/src/beam_dict.erl @@ -22,9 +22,10 @@ -export([new/0,opcode/2,highest_opcode/1, atom/2,local/4,export/4,import/4, - string/2,lambda/5,literal/2, + string/2,lambda/5,literal/2,line/2,fname/2, atom_table/1,local_table/1,export_table/1,import_table/1, - string_table/1,lambda_table/1,literal_table/1]). + string_table/1,lambda_table/1,literal_table/1, + line_table/1]). -type label() :: non_neg_integer(). @@ -36,6 +37,9 @@ strings = <<>> :: binary(), %String pool lambdas = [], %[{...}] literals = dict:new() :: dict(), %Format: {Literal,Number} + fnames = gb_trees:empty() :: gb_tree(), %{Name,Index} + lines = gb_trees:empty() :: gb_tree(), %{{Fname,Line},Index} + num_lines = 0 :: non_neg_integer(), %Number of line instructions next_import = 0 :: non_neg_integer(), string_offset = 0 :: non_neg_integer(), next_literal = 0 :: non_neg_integer(), @@ -152,6 +156,36 @@ literal(Lit, #asm{literals=Tab0,next_literal=NextIndex}=Dict) -> {NextIndex,Dict#asm{literals=Tab,next_literal=NextIndex+1}} end. +%% Returns the index for a line instruction (adding information +%% to the location information table). +-spec line(list(), bdict()) -> {non_neg_integer(), bdict()}. + +line([], #asm{num_lines=N}=Dict) -> + %% No location available. Return the special pre-defined + %% index 0. + {0,Dict#asm{num_lines=N+1}}; +line([{location,Name,Line}], #asm{lines=Lines0,num_lines=N}=Dict0) -> + {FnameIndex,Dict1} = fname(Name, Dict0), + case gb_trees:lookup({FnameIndex,Line}, Lines0) of + {value,Index} -> + {Index,Dict1#asm{num_lines=N+1}}; + none -> + Index = gb_trees:size(Lines0) + 1, + Lines = gb_trees:insert({FnameIndex,Line}, Index, Lines0), + Dict = Dict1#asm{lines=Lines,num_lines=N+1}, + {Index,Dict} + end. + +fname(Name, #asm{fnames=Fnames0}=Dict) -> + case gb_trees:lookup(Name, Fnames0) of + {value,Index} -> + {Index,Dict}; + none -> + Index = gb_trees:size(Fnames0), + Fnames = gb_trees:insert(Name, Index, Fnames0), + {Index,Dict#asm{fnames=Fnames}} + end. + %% Returns the atom table. %% atom_table(Dict) -> {LastIndex,[Length,AtomString...]} -spec atom_table(bdict()) -> {non_neg_integer(), [[non_neg_integer(),...]]}. @@ -219,6 +253,21 @@ literal_table(#asm{literals=Tab,next_literal=NumLiterals}) -> my_term_to_binary(Term) -> term_to_binary(Term, [{minor_version,1}]). +%% Return the line table. +-spec line_table(bdict()) -> + {non_neg_integer(), %Number of line instructions. + non_neg_integer(),[string()], + non_neg_integer(),[{non_neg_integer(),non_neg_integer()}]}. + +line_table(#asm{fnames=Fnames0,lines=Lines0,num_lines=NumLineInstrs}) -> + NumFnames = gb_trees:size(Fnames0), + Fnames1 = lists:keysort(2, gb_trees:to_list(Fnames0)), + Fnames = [Name || {Name,_} <- Fnames1], + NumLines = gb_trees:size(Lines0), + Lines1 = lists:keysort(2, gb_trees:to_list(Lines0)), + Lines = [L || {L,_} <- Lines1], + {NumLineInstrs,NumFnames,Fnames,NumLines,Lines}. + %% Search for binary string Str in the binary string pool Pool. %% old_string(Str, Pool) -> none | Index -spec old_string(binary(), binary()) -> 'none' | pos_integer(). diff --git a/lib/compiler/src/beam_disasm.erl b/lib/compiler/src/beam_disasm.erl index fc1800d8be..410233a0f7 100644 --- a/lib/compiler/src/beam_disasm.erl +++ b/lib/compiler/src/beam_disasm.erl @@ -296,6 +296,8 @@ get_function_chunks(Code) -> labels_r([], R) -> {R, []}; labels_r([{label,_}=I|Is], R) -> labels_r(Is, [I|R]); +labels_r([{line,_}=I|Is], R) -> + labels_r(Is, [I|R]); labels_r(Is, R) -> {R, Is}. get_funs({[],[]}) -> []; @@ -335,20 +337,17 @@ local_labels(Funs) -> local_labels_1(function__code(F), R) end, [], Funs)). -%% The first clause below attempts to provide some (limited form of) -%% backwards compatibility; it is not needed for .beam files generated -%% by the R8 compiler. The clause should one fine day be taken out. -local_labels_1([{label,_}|[{label,_}|_]=Code], R) -> - local_labels_1(Code, R); -local_labels_1([{label,_},{func_info,{atom,M},{atom,F},A}|Code], R) - when is_atom(M), is_atom(F) -> - local_labels_2(Code, R, M, F, A); -local_labels_1(Code, _) -> - ?exit({'local_labels: no label in code',Code}). - -local_labels_2([{label,[{u,L}]}|Code], R, M, F, A) -> - local_labels_2(Code, [{L,{M,F,A}}|R], M, F, A); -local_labels_2(_, R, _, _, _) -> R. +local_labels_1(Code0, R) -> + Code1 = lists:dropwhile(fun({label,_}) -> true; + ({line,_}) -> true; + ({func_info,_,_,_}) -> false + end, Code0), + [{func_info,{atom,M},{atom,F},A}|Code] = Code1, + local_labels_2(Code, R, {M,F,A}). + +local_labels_2([{label,[{u,L}]}|Code], R, MFA) -> + local_labels_2(Code, [{L,MFA}|R], MFA); +local_labels_2(_, R, _) -> R. %%----------------------------------------------------------------------- %% Disassembles a single BEAM instruction; most instructions are handled diff --git a/lib/hipe/icode/hipe_beam_to_icode.erl b/lib/hipe/icode/hipe_beam_to_icode.erl index 8254d71965..f557d3419e 100644 --- a/lib/hipe/icode/hipe_beam_to_icode.erl +++ b/lib/hipe/icode/hipe_beam_to_icode.erl @@ -281,10 +281,14 @@ needs_redtest(Leafness) -> %%----------------------------------------------------------------------- %%--- label & func_info combo --- +trans_fun([{label,_}=F,{func_info,_,_,_}=FI|Instructions], Env) -> + %% Handle old code without a line instruction. + trans_fun([F,{line,[]},FI|Instructions], Env); trans_fun([{label,B},{label,_}, {func_info,M,F,A},{label,L}|Instructions], Env) -> trans_fun([{label,B},{func_info,M,F,A},{label,L}|Instructions], Env); trans_fun([{label,B}, + {line,_}, {func_info,{atom,_M},{atom,_F},_A}, {label,L}|Instructions], Env) -> %% Emit code to handle function_clause errors. The BEAM test instructions @@ -1874,6 +1878,8 @@ patch_make_funs([], FunIndex, Acc) -> find_mfa([{label,_}|Code]) -> find_mfa(Code); +find_mfa([{line,_}|Code]) -> + find_mfa(Code); find_mfa([{func_info,{atom,M},{atom,F},A}|_]) when is_atom(M), is_atom(F), is_integer(A), 0 =< A, A =< 255 -> {M, F, A}. |