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137 lines
3.1 KiB
ObjectPascal
137 lines
3.1 KiB
ObjectPascal
{ This file is part of wasmbin - a collection of WebAssembly binary utils.
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Copyright (C) 2019, 2020 Dmitry Boyarintsev <skalogryz.lists@gmail.com>
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Copyright (C) 2020 by the Free Pascal development team
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This source is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your option)
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any later version.
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This code is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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A copy of the GNU General Public License is available on the World Wide Web
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at <http://www.gnu.org/copyleft/gpl.html>. You can also obtain it by writing
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to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1335, USA.
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}
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program wasa;
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{$mode objfpc}{$H+}
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uses
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SysUtils, Classes, watparser, watscanner, wasmmodule, wasmbinwriter,
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wasmnormalize;
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type
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TAsmParams = record
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SrcFile : string;
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Reloc : Boolean;
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DstObjFile : string;
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end;
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procedure DefaultParams(out p: TAsmParams);
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begin
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p.SrcFile := '';
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p.Reloc := false;
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p.DstObjFile := '';
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end;
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procedure WriteBin(const p: TAsmParams; m: TWasmModule);
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var
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f : TFileStream;
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begin
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f := TFileStream.Create(p.DstObjFile, fmCreate);
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try
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Normalize(m);
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WriteModule(m, f, p.Reloc, p.Reloc);
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finally
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f.Free;
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end;
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end;
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procedure Run(const prm: TAsmParams);
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var
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st : TFileStream;
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s : string;
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p : TWatScanner;
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m : TWasmModule;
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err : string;
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begin
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st := TFileStream.Create(prm.SrcFile, fmOpenRead or fmShareDenyNone);
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p := TWatScanner.Create;
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try
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SetLength(s, st.Size);
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if length(s)>0 then st.Read(s[1], length(s));
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p.SetSource(s);
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m := TWasmModule.Create;
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try
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if not ParseModule(p, m, err) then
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writeln('Error: ', err)
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else
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WriteBin(prm, m);
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finally
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m.Free;
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end;
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finally
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p.Free;
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st.Free;
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end;
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end;
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procedure ParseParams(var p: TAsmParams);
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var
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i : integer;
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s : string;
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ls : string;
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begin
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i:=1;
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while i<=ParamCount do begin
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s := ParamStr(i);
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if (s<>'') and (s[1]='-') then begin
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ls := AnsiLowerCase(s);
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if ls = '-o' then begin
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inc(i);
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if (i<=ParamCount) then
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p.DstObjFile:=ParamStr(i);
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end else if ls = '-r' then
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p.Reloc := true;
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end else
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p.SrcFile := s;
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inc(i);
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end;
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if (p.SrcFile<>'') then begin
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p.SrcFile := ExpandFileName(p.SrcFile);
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if (p.DstObjFile = '') then
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p.DstObjFile := ChangeFileExt(p.SrcFile, '.wasm')
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end;
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end;
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var
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prm : TAsmParams;
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begin
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DefaultParams(prm);
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ParseParams(prm);
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if (prm.SrcFile='') then begin
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writeln('please specify the input .wat file');
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exit;
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end;
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if not FileExists(prm.SrcFile) then begin
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writeln('file doesn''t exist: ', prm.SrcFile);
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exit;
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end;
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try
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Run(prm);
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except
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on e: exception do
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writeln(e.message);
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end
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end.
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