From e5aaeb8ebc59c6e7999b0e41a17ea1e5ad873ed5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Tue, 23 Oct 2018 09:19:37 +0200 Subject: scripts/diffable: Use the diffable compiler option Now that the compiler has a `diffable` option, use it for a slight speed up. --- scripts/diffable | 153 +++++++++++-------------------------------------------- 1 file changed, 29 insertions(+), 124 deletions(-) (limited to 'scripts') diff --git a/scripts/diffable b/scripts/diffable index 66b50d0499..28dc71c69e 100755 --- a/scripts/diffable +++ b/scripts/diffable @@ -3,7 +3,8 @@ -mode(compile). main(Args0) -> - {Args,Opts} = opts(Args0, #{format=>asm,no_compile=>false}), + DefOpts = #{format=>asm,no_compile=>false,legacy=>false}, + {Args,Opts} = opts(Args0, DefOpts), case Args of [OutDir] -> do_compile(OutDir, Opts); @@ -15,6 +16,7 @@ usage() -> S = "usage: otp-diffable-asm [OPTION] DIRECTORY\n\n" "Options:\n" " --asm Output to .S files (default)\n" + " --legacy-asm Output to legacy .S files\n" " --dis Output to .dis files\n" " --no-compile Disassemble from BEAM files (use with --dis)\n" "\n" @@ -23,6 +25,8 @@ usage() -> "Compile some applications from OTP (more than 700 modules) to either\n" ".S files or .dis files. The files are massaged to make them diff-friendly.\n" "\n" + "The --legacy-asm options forces the output file to be in Latin1 encoding\n" + "and adds a latin1 encoding comment to the first line of the file.\n" "EXAMPLES\n" "\n" "This example shows how the effectiveness of a compiler \n" @@ -54,9 +58,11 @@ opt("asm", Opts) -> Opts#{format:=asm}; opt("dis", Opts) -> Opts#{format:=dis}; +opt("legacy-asm", Opts) -> + Opts#{format:=asm,legacy:=true}; opt("no-compile", Opts) -> Opts#{format:=dis,no_compile:=true}; -opt(Opt, Opts) -> +opt(Opt, _Opts) -> io:format("Uknown option: --~ts\n\n", [Opt]), usage(). @@ -204,109 +210,33 @@ get_beams([]) -> []. %%% Generate renumbered .S files. %%% -compile_to_asm_fun(#{outdir:=OutDir}) -> +compile_to_asm_fun(#{outdir:=OutDir}=Opts) -> fun(File) -> - compile_to_asm(File, OutDir) + Legacy = map_get(legacy, Opts), + compile_to_asm(File, OutDir, Legacy) end. -compile_to_asm({File,Opts}, OutDir) -> - case compile:file(File, [to_asm,binary,report_errors|Opts]) of +compile_to_asm({File,Opts}, OutDir, Legacy) -> + case compile:file(File, [diffable,{outdir,OutDir},report_errors|Opts]) of + {ok,_Mod} -> + case Legacy of + true -> + legacy_asm(OutDir, File); + false -> + ok + end; error -> - error; - {ok,Mod,Asm0} -> - {ok,Asm1} = beam_a:module(Asm0, []), - Asm2 = renumber_asm(Asm1), - {ok,Asm} = beam_z:module(Asm2, []), - print_asm(Mod, OutDir, Asm) + error end. -print_asm(Mod, OutDir, Asm) -> - S = atom_to_list(Mod) ++ ".S", - Name = filename:join(OutDir, S), - {ok,Fd} = file:open(Name, [write,raw,delayed_write]), - ok = beam_listing(Fd, Asm), - ok = file:close(Fd). - -renumber_asm({Mod,Exp,Attr,Fs0,NumLabels}) -> - EntryLabels = maps:from_list(entry_labels(Fs0)), - Fs = [fix_func(F, EntryLabels) || F <- Fs0], - {Mod,Exp,Attr,Fs,NumLabels}. - -entry_labels(Fs) -> - [{Entry,{Name,Arity}} || {function,Name,Arity,Entry,_} <- Fs]. - -fix_func({function,Name,Arity,Entry0,Is0}, LabelMap0) -> - Entry = maps:get(Entry0, LabelMap0), - LabelMap = label_map(Is0, 1, LabelMap0), - Is = replace(Is0, [], LabelMap), - {function,Name,Arity,Entry,Is}. - -label_map([{label,Old}|Is], New, Map) -> - case maps:is_key(Old, Map) of - false -> - label_map(Is, New+1, Map#{Old=>New}); - true -> - label_map(Is, New, Map) - end; -label_map([_|Is], New, Map) -> - label_map(Is, New, Map); -label_map([], _New, Map) -> - Map. - -replace([{label,Lbl}|Is], Acc, D) -> - replace(Is, [{label,label(Lbl, D)}|Acc], D); -replace([{test,Test,{f,Lbl},Ops}|Is], Acc, D) -> - replace(Is, [{test,Test,{f,label(Lbl, D)},Ops}|Acc], D); -replace([{test,Test,{f,Lbl},Live,Ops,Dst}|Is], Acc, D) -> - replace(Is, [{test,Test,{f,label(Lbl, D)},Live,Ops,Dst}|Acc], D); -replace([{select,I,R,{f,Fail0},Vls0}|Is], Acc, D) -> - Vls = lists:map(fun ({f,L}) -> {f,label(L, D)}; - (Other) -> Other - end, Vls0), - Fail = label(Fail0, D), - replace(Is, [{select,I,R,{f,Fail},Vls}|Acc], D); -replace([{'try',R,{f,Lbl}}|Is], Acc, D) -> - replace(Is, [{'try',R,{f,label(Lbl, D)}}|Acc], D); -replace([{'catch',R,{f,Lbl}}|Is], Acc, D) -> - replace(Is, [{'catch',R,{f,label(Lbl, D)}}|Acc], D); -replace([{jump,{f,Lbl}}|Is], Acc, D) -> - replace(Is, [{jump,{f,label(Lbl, D)}}|Acc], D); -replace([{loop_rec,{f,Lbl},R}|Is], Acc, D) -> - replace(Is, [{loop_rec,{f,label(Lbl, D)},R}|Acc], D); -replace([{loop_rec_end,{f,Lbl}}|Is], Acc, D) -> - replace(Is, [{loop_rec_end,{f,label(Lbl, D)}}|Acc], D); -replace([{wait,{f,Lbl}}|Is], Acc, D) -> - replace(Is, [{wait,{f,label(Lbl, D)}}|Acc], D); -replace([{wait_timeout,{f,Lbl},To}|Is], Acc, D) -> - replace(Is, [{wait_timeout,{f,label(Lbl, D)},To}|Acc], D); -replace([{bif,Name,{f,Lbl},As,R}|Is], Acc, D) when Lbl =/= 0 -> - replace(Is, [{bif,Name,{f,label(Lbl, D)},As,R}|Acc], D); -replace([{gc_bif,Name,{f,Lbl},Live,As,R}|Is], Acc, D) when Lbl =/= 0 -> - replace(Is, [{gc_bif,Name,{f,label(Lbl, D)},Live,As,R}|Acc], D); -replace([{call,Ar,{f,Lbl}}|Is], Acc, D) -> - replace(Is, [{call,Ar,{f,label(Lbl,D)}}|Acc], D); -replace([{make_fun2,{f,Lbl},U1,U2,U3}|Is], Acc, D) -> - replace(Is, [{make_fun2,{f,label(Lbl, D)},U1,U2,U3}|Acc], D); -replace([{bs_init,{f,Lbl},Info,Live,Ss,Dst}|Is], Acc, D) when Lbl =/= 0 -> - replace(Is, [{bs_init,{f,label(Lbl, D)},Info,Live,Ss,Dst}|Acc], D); -replace([{bs_put,{f,Lbl},Info,Ss}|Is], Acc, D) when Lbl =/= 0 -> - replace(Is, [{bs_put,{f,label(Lbl, D)},Info,Ss}|Acc], D); -replace([{put_map=I,{f,Lbl},Op,Src,Dst,Live,List}|Is], Acc, D) - when Lbl =/= 0 -> - replace(Is, [{I,{f,label(Lbl, D)},Op,Src,Dst,Live,List}|Acc], D); -replace([{get_map_elements=I,{f,Lbl},Src,List}|Is], Acc, D) when Lbl =/= 0 -> - replace(Is, [{I,{f,label(Lbl, D)},Src,List}|Acc], D); -replace([{recv_mark=I,{f,Lbl}}|Is], Acc, D) -> - replace(Is, [{I,{f,label(Lbl, D)}}|Acc], D); -replace([{recv_set=I,{f,Lbl}}|Is], Acc, D) -> - replace(Is, [{I,{f,label(Lbl, D)}}|Acc], D); -replace([I|Is], Acc, D) -> - replace(Is, [I|Acc], D); -replace([], Acc, _) -> - lists:reverse(Acc). - -label(Old, D) when is_integer(Old) -> - maps:get(Old, D). +legacy_asm(OutDir, Source) -> + ModName = filename:rootname(filename:basename(Source)), + File = filename:join(OutDir, ModName), + AsmFile = File ++ ".S", + {ok,Asm0} = file:read_file(AsmFile), + Asm1 = unicode:characters_to_binary(Asm0, utf8, latin1), + Asm = [<<"%% -*- encoding:latin-1 -*-\n">>|Asm1], + ok = file:write_file(AsmFile, Asm). %%% %%% Compile and disassemble the loaded code. @@ -614,28 +544,3 @@ p_run_loop(Test, List, N, Refs0, Errors0) -> Refs = Refs0 -- [Ref], p_run_loop(Test, List, N, Refs, Errors) end. - -%%% -%%% Borrowed from beam_listing and tweaked. -%%% - -beam_listing(Stream, {Mod,Exp,Attr,Code,NumLabels}) -> - Head = ["%% -*- encoding:latin-1 -*-\n", - io_lib:format("{module, ~p}. %% version = ~w\n", - [Mod, beam_opcodes:format_number()]), - io_lib:format("\n{exports, ~p}.\n", [Exp]), - io_lib:format("\n{attributes, ~p}.\n", [Attr]), - io_lib:format("\n{labels, ~p}.\n", [NumLabels])], - ok = file:write(Stream, Head), - lists:foreach( - fun ({function,Name,Arity,Entry,Asm}) -> - S = [io_lib:format("\n\n{function, ~w, ~w, ~w}.\n", - [Name,Arity,Entry])|format_asm(Asm)], - ok = file:write(Stream, S) - end, Code). - -format_asm([{label,_}=I|Is]) -> - [io_lib:format(" ~p", [I]),".\n"|format_asm(Is)]; -format_asm([I|Is]) -> - [io_lib:format(" ~p", [I]),".\n"|format_asm(Is)]; -format_asm([]) -> []. -- cgit v1.2.1