freepascal.compiler/compiler/targets/t_win32.pas

{
    $Id$
    Copyright (c) 1998-2000 by Peter Vreman

    This unit implements support import,export,link routines
    for the (i386) Win32 target

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 ****************************************************************************
}
unit t_win32;

{$i defines.inc}

interface


implementation

    uses
{$ifdef Delphi}
       dmisc,
{$else Delphi}
       dos,
{$endif Delphi}
       cutils,cclasses,
       aasm,fmodule,globtype,globals,systems,verbose,
       script,gendef,
       cpubase,cpuasm,
{$ifdef GDB}
       gdb,
{$endif}
       import,export,link;

  type
    timportlibwin32=class(timportlib)
      procedure preparelib(const s:string);override;
      procedure importprocedure(const func,module:string;index:longint;const name:string);override;
      procedure importvariable(const varname,module:string;const name:string);override;
      procedure generatelib;override;
      procedure generatenasmlib;virtual;
      procedure generatesmartlib;override;
    end;

    texportlibwin32=class(texportlib)
      st : string;
      last_index : longint;
      procedure preparelib(const s:string);override;
      procedure exportprocedure(hp : texported_item);override;
      procedure exportvar(hp : texported_item);override;
      procedure generatelib;override;
      procedure generatenasmlib;virtual;
    end;

    tlinkerwin32=class(tlinker)
    private
       Function  WriteResponseFile(isdll:boolean) : Boolean;
       Function  PostProcessExecutable(const fn:string;isdll:boolean) : Boolean;
    public
       Constructor Create;override;
       Procedure SetDefaultInfo;override;
       function  MakeExecutable:boolean;override;
       function  MakeSharedLibrary:boolean;override;
    end;

    tDLLScannerWin32=class(tDLLScanner)
    private
      cstring : array[0..127]of char;
      function DOSstubOK(var x:cardinal):boolean;
      function FindDLL(const s:string;var founddll:string):boolean;
      function DllName(Const Name : string) : string;
    public
      function isSuitableFileType(x:cardinal):longbool;override;
      function GetEdata(HeaderEntry:cardinal):longbool;override;
      function Scan(const binname:string):longbool;override;
    end;


    function DllName(Const Name : string) : string;
      var n : string;
      begin
         n:=Upper(SplitExtension(Name));
         if (n='.DLL') or (n='.DRV') or (n='.EXE') then
           DllName:=Name
         else
           DllName:=Name+target_info.sharedlibext;
      end;


{*****************************************************************************
                             TIMPORTLIBWIN32
*****************************************************************************}

    procedure timportlibwin32.preparelib(const s : string);
      begin
         if not(assigned(importssection)) then
           importssection:=TAAsmoutput.create;
      end;


    procedure timportlibwin32.importprocedure(const func,module : string;index : longint;const name : string);
      var
         hp1 : timportlist;
         hp2 : timported_item;
         hs  : string;
      begin
         hs:=DllName(module);
         { search for the module }
         hp1:=timportlist(current_module.imports.first);
         while assigned(hp1) do
           begin
              if hs=hp1.dllname^ then
                break;
              hp1:=timportlist(hp1.next);
           end;
         { generate a new item ? }
         if not(assigned(hp1)) then
           begin
              hp1:=timportlist.create(hs);
              current_module.imports.concat(hp1);
           end;
         { search for reuse of old import item }
         hp2:=timported_item(hp1.imported_items.first);
         while assigned(hp2) do
          begin
            if hp2.func^=func then
             break;
            hp2:=timported_item(hp2.next);
          end;
         if not assigned(hp2) then
          begin
            hp2:=timported_item.create(func,name,index);
            hp1.imported_items.concat(hp2);
          end;
      end;


    procedure timportlibwin32.importvariable(const varname,module:string;const name:string);
      var
         hp1 : timportlist;
         hp2 : timported_item;
         hs  : string;
      begin
         hs:=DllName(module);
         { search for the module }
         hp1:=timportlist(current_module.imports.first);
         while assigned(hp1) do
           begin
              if hs=hp1.dllname^ then
                break;
              hp1:=timportlist(hp1.next);
           end;
         { generate a new item ? }
         if not(assigned(hp1)) then
           begin
              hp1:=timportlist.create(hs);
              current_module.imports.concat(hp1);
           end;
         hp2:=timported_item.create_var(varname,name);
         hp1.imported_items.concat(hp2);
      end;

    procedure timportlibwin32.generatenasmlib;
      var
         hp1 : timportlist;
         hp2 : timported_item;
         p : pchar;
      begin
         importssection.concat(tai_section.create(sec_code));
         hp1:=timportlist(current_module.imports.first);
         while assigned(hp1) do
           begin
             hp2:=timported_item(hp1.imported_items.first);
             while assigned(hp2) do
               begin
                 if (aktoutputformat=as_i386_tasm) or
                    (aktoutputformat=as_i386_masm) then
                   p:=strpnew(#9+'EXTRN '+hp2.func^)
                 else
                   p:=strpnew(#9+'EXTERN '+hp2.func^);
                 importssection.concat(tai_direct.create(p));
                 p:=strpnew(#9+'import '+hp2.func^+' '+hp1.dllname^+' '+hp2.name^);
                 importssection.concat(tai_direct.create(p));
                 hp2:=timported_item(hp2.next);
               end;
             hp1:=timportlist(hp1.next);
           end;
      end;


    procedure timportlibwin32.generatesmartlib;
      var
         hp1 : timportlist;
         hp2 : timported_item;
         lhead,lname,lcode,
         lidata4,lidata5 : tasmlabel;
         r : preference;
      begin
         if (aktoutputformat<>as_i386_asw) and
            (aktoutputformat<>as_i386_pecoff) then
          begin
            generatenasmlib;
            exit;
          end;
         hp1:=timportlist(current_module.imports.first);
         while assigned(hp1) do
           begin
           { Get labels for the sections }
             getdatalabel(lhead);
             getdatalabel(lname);
             getaddrlabel(lidata4);
             getaddrlabel(lidata5);
           { create header for this importmodule }
             importsSection.concat(Tai_cut.Create_begin);
             importsSection.concat(Tai_section.Create(sec_idata2));
             importsSection.concat(Tai_label.Create(lhead));
             { pointer to procedure names }
             importsSection.concat(Tai_const_symbol.Create_rva(lidata4));
             { two empty entries follow }
             importsSection.concat(Tai_const.Create_32bit(0));
             importsSection.concat(Tai_const.Create_32bit(0));
             { pointer to dll name }
             importsSection.concat(Tai_const_symbol.Create_rva(lname));
             { pointer to fixups }
             importsSection.concat(Tai_const_symbol.Create_rva(lidata5));
             { first write the name references }
             importsSection.concat(Tai_section.Create(sec_idata4));
             importsSection.concat(Tai_const.Create_32bit(0));
             importsSection.concat(Tai_label.Create(lidata4));
             { then the addresses and create also the indirect jump }
             importsSection.concat(Tai_section.Create(sec_idata5));
             importsSection.concat(Tai_const.Create_32bit(0));
             importsSection.concat(Tai_label.Create(lidata5));

             { create procedures }
             hp2:=timported_item(hp1.imported_items.first);
             while assigned(hp2) do
               begin
                 { insert cuts }
                 importsSection.concat(Tai_cut.Create);
                 { create indirect jump }
                 if not hp2.is_var then
                  begin
                    getlabel(lcode);
                    new(r);
                    reset_reference(r^);
                    r^.symbol:=lcode;
                    { place jump in codesegment, insert a code section in the
                      importsection to reduce the amount of .s files (PFV) }
                    importsSection.concat(Tai_section.Create(sec_code));
{$IfDef GDB}
                    if (cs_debuginfo in aktmoduleswitches) then
                     importsSection.concat(Tai_stab_function_name.Create(nil));
{$EndIf GDB}
                    importsSection.concat(Tai_symbol.Createname_global(hp2.func^,0));
                    importsSection.concat(Taicpu.Op_ref(A_JMP,S_NO,r));
                    importsSection.concat(Tai_align.Create_op(4,$90));
                  end;
                 { create head link }
                 importsSection.concat(Tai_section.Create(sec_idata7));
                 importsSection.concat(Tai_const_symbol.Create_rva(lhead));
                 { fixup }
                 getlabel(tasmlabel(hp2.lab));
                 importsSection.concat(Tai_section.Create(sec_idata4));
                 importsSection.concat(Tai_const_symbol.Create_rva(hp2.lab));
                 { add jump field to importsection }
                 importsSection.concat(Tai_section.Create(sec_idata5));
                 if hp2.is_var then
                  importsSection.concat(Tai_symbol.Createname_global(hp2.func^,0))
                 else
                  importsSection.concat(Tai_label.Create(lcode));
                  if hp2.name^<>'' then
                    importsSection.concat(Tai_const_symbol.Create_rva(hp2.lab))
                  else
                    importsSection.concat(Tai_const.Create_32bit($80000000 or hp2.ordnr));
                 { finally the import information }
                 importsSection.concat(Tai_section.Create(sec_idata6));
                 importsSection.concat(Tai_label.Create(hp2.lab));
                 importsSection.concat(Tai_const.Create_16bit(hp2.ordnr));
                 importsSection.concat(Tai_string.Create(hp2.name^+#0));
                 importsSection.concat(Tai_align.Create_op(2,0));
                 hp2:=timported_item(hp2.next);
               end;

              { write final section }
              importsSection.concat(Tai_cut.Create_end);
              { end of name references }
              importsSection.concat(Tai_section.Create(sec_idata4));
              importsSection.concat(Tai_const.Create_32bit(0));
              { end if addresses }
              importsSection.concat(Tai_section.Create(sec_idata5));
              importsSection.concat(Tai_const.Create_32bit(0));
              { dllname }
              importsSection.concat(Tai_section.Create(sec_idata7));
              importsSection.concat(Tai_label.Create(lname));
              importsSection.concat(Tai_string.Create(hp1.dllname^+#0));

              hp1:=timportlist(hp1.next);
           end;
       end;


    procedure timportlibwin32.generatelib;
      var
         hp1 : timportlist;
         hp2 : timported_item;
         l1,l2,l3,l4 : tasmlabel;
         r : preference;
      begin
         if (aktoutputformat<>as_i386_asw) and
            (aktoutputformat<>as_i386_pecoff) then
          begin
            generatenasmlib;
            exit;
          end;
         hp1:=timportlist(current_module.imports.first);
         while assigned(hp1) do
           begin
              { align codesegment for the jumps }
              importsSection.concat(Tai_section.Create(sec_code));
              importsSection.concat(Tai_align.Create_op(4,$90));
              { Get labels for the sections }
              getlabel(l1);
              getlabel(l2);
              getlabel(l3);
              importsSection.concat(Tai_section.Create(sec_idata2));
              { pointer to procedure names }
              importsSection.concat(Tai_const_symbol.Create_rva(l2));
              { two empty entries follow }
              importsSection.concat(Tai_const.Create_32bit(0));
              importsSection.concat(Tai_const.Create_32bit(0));
              { pointer to dll name }
              importsSection.concat(Tai_const_symbol.Create_rva(l1));
              { pointer to fixups }
              importsSection.concat(Tai_const_symbol.Create_rva(l3));

              { only create one section for each else it will
                create a lot of idata* }

              { first write the name references }
              importsSection.concat(Tai_section.Create(sec_idata4));
              importsSection.concat(Tai_label.Create(l2));

              hp2:=timported_item(hp1.imported_items.first);
              while assigned(hp2) do
                begin
                   getlabel(tasmlabel(hp2.lab));
                   if hp2.name^<>'' then
                     importsSection.concat(Tai_const_symbol.Create_rva(hp2.lab))
                   else
                     importsSection.concat(Tai_const.Create_32bit($80000000 or hp2.ordnr));
                   hp2:=timported_item(hp2.next);
                end;
              { finalize the names ... }
              importsSection.concat(Tai_const.Create_32bit(0));

              { then the addresses and create also the indirect jump }
              importsSection.concat(Tai_section.Create(sec_idata5));
              importsSection.concat(Tai_label.Create(l3));
              hp2:=timported_item(hp1.imported_items.first);
              while assigned(hp2) do
                begin
                   if not hp2.is_var then
                    begin
                      getlabel(l4);
                      { create indirect jump }
                      new(r);
                      reset_reference(r^);
                      r^.symbol:=l4;
                      { place jump in codesegment }
                      importsSection.concat(Tai_section.Create(sec_code));
                      importsSection.concat(Tai_symbol.Createname_global(hp2.func^,0));
                      importsSection.concat(Taicpu.Op_ref(A_JMP,S_NO,r));
                      importsSection.concat(Tai_align.Create_op(4,$90));
                      { add jump field to importsection }
                      importsSection.concat(Tai_section.Create(sec_idata5));
                      importsSection.concat(Tai_label.Create(l4));
                    end
                   else
                    begin
                      importsSection.concat(Tai_symbol.Createname_global(hp2.func^,0));
                    end;
                   importsSection.concat(Tai_const_symbol.Create_rva(hp2.lab));
                   hp2:=timported_item(hp2.next);
                end;
              { finalize the addresses }
              importsSection.concat(Tai_const.Create_32bit(0));

              { finally the import information }
              importsSection.concat(Tai_section.Create(sec_idata6));
              hp2:=timported_item(hp1.imported_items.first);
              while assigned(hp2) do
                begin
                   importsSection.concat(Tai_label.Create(hp2.lab));
                   { the ordinal number }
                   importsSection.concat(Tai_const.Create_16bit(hp2.ordnr));
                   importsSection.concat(Tai_string.Create(hp2.name^+#0));
                   importsSection.concat(Tai_align.Create_op(2,0));
                   hp2:=timported_item(hp2.next);
                end;
              { create import dll name }
              importsSection.concat(Tai_section.Create(sec_idata7));
              importsSection.concat(Tai_label.Create(l1));
              importsSection.concat(Tai_string.Create(hp1.dllname^+#0));

              hp1:=timportlist(hp1.next);
           end;
      end;


{*****************************************************************************
                             TEXPORTLIBWIN32
*****************************************************************************}

    procedure texportlibwin32.preparelib(const s:string);
      begin
         if not(assigned(exportssection)) then
           exportssection:=TAAsmoutput.create;
         last_index:=0;
         getdatalabel(edatalabel);
      end;



    procedure texportlibwin32.exportvar(hp : texported_item);
      begin
         { same code used !! PM }
         exportprocedure(hp);
      end;


    procedure texportlibwin32.exportprocedure(hp : texported_item);
      { must be ordered at least for win32 !! }
      var
        hp2 : texported_item;
      begin
        { first test the index value }
        if (hp.options and eo_index)<>0 then
          begin
             if (hp.index<=0) or (hp.index>$ffff) then
               begin
                 message1(parser_e_export_invalid_index,tostr(hp.index));
                 exit;
               end;
             if (hp.index<=last_index) then
               begin
                 message1(parser_e_export_ordinal_double,tostr(hp.index));
                 { disregard index value }
                 inc(last_index);
                 hp.index:=last_index;
                 exit;
               end
             else
               begin
                 last_index:=hp.index;
               end;
          end
        else
          begin
             inc(last_index);
             hp.index:=last_index;
          end;
        { now place in correct order }
        hp2:=texported_item(current_module._exports.first);
        while assigned(hp2) and
           (hp.name^>hp2.name^) do
          hp2:=texported_item(hp2.next);
        { insert hp there !! }
        if assigned(hp2) and (hp2.name^=hp.name^) then
          begin
             { this is not allowed !! }
             message1(parser_e_export_name_double,hp.name^);
             exit;
          end;
        if hp2=texported_item(current_module._exports.first) then
          current_module._exports.concat(hp)
        else if assigned(hp2) then
          begin
             hp.next:=hp2;
             hp.previous:=hp2.previous;
             if assigned(hp2.previous) then
               hp2.previous.next:=hp;
             hp2.previous:=hp;
          end
        else
          current_module._exports.concat(hp);
      end;


    procedure texportlibwin32.generatelib;
      var
         ordinal_base,ordinal_max,ordinal_min : longint;
         current_index : longint;
         entries,named_entries : longint;
         name_label,dll_name_label,export_address_table : tasmlabel;
         export_name_table_pointers,export_ordinal_table : tasmlabel;
         hp,hp2 : texported_item;
         temtexport : TLinkedList;
         address_table,name_table_pointers,
         name_table,ordinal_table : TAAsmoutput;
      begin
        if (aktoutputformat<>as_i386_asw) and
           (aktoutputformat<>as_i386_pecoff) then
         begin
           generatenasmlib;
           exit;
         end;

         hp:=texported_item(current_module._exports.first);
         if not assigned(hp) then
           exit;

         ordinal_max:=0;
         ordinal_min:=$7FFFFFFF;
         entries:=0;
         named_entries:=0;
         getlabel(dll_name_label);
         getlabel(export_address_table);
         getlabel(export_name_table_pointers);
         getlabel(export_ordinal_table);

         { count entries }
         while assigned(hp) do
           begin
              inc(entries);
              if (hp.index>ordinal_max) then
                ordinal_max:=hp.index;
              if (hp.index>0) and (hp.index<ordinal_min) then
                ordinal_min:=hp.index;
              if assigned(hp.name) then
                inc(named_entries);
              hp:=texported_item(hp.next);
           end;

         { no support for higher ordinal base yet !! }
         ordinal_base:=1;
         current_index:=ordinal_base;
         { we must also count the holes !! }
         entries:=ordinal_max-ordinal_base+1;

         exportsSection.concat(Tai_section.Create(sec_edata));
         { create label to reference from main so smartlink will include
           the .edata section }
         exportsSection.concat(Tai_symbol.Create(edatalabel,0));
         { export flags }
         exportsSection.concat(Tai_const.Create_32bit(0));
         { date/time stamp }
         exportsSection.concat(Tai_const.Create_32bit(0));
         { major version }
         exportsSection.concat(Tai_const.Create_16bit(0));
         { minor version }
         exportsSection.concat(Tai_const.Create_16bit(0));
         { pointer to dll name }
         exportsSection.concat(Tai_const_symbol.Create_rva(dll_name_label));
         { ordinal base normally set to 1 }
         exportsSection.concat(Tai_const.Create_32bit(ordinal_base));
         { number of entries }
         exportsSection.concat(Tai_const.Create_32bit(entries));
         { number of named entries }
         exportsSection.concat(Tai_const.Create_32bit(named_entries));
         { address of export address table }
         exportsSection.concat(Tai_const_symbol.Create_rva(export_address_table));
         { address of name pointer pointers }
         exportsSection.concat(Tai_const_symbol.Create_rva(export_name_table_pointers));
         { address of ordinal number pointers }
         exportsSection.concat(Tai_const_symbol.Create_rva(export_ordinal_table));
         { the name }
         exportsSection.concat(Tai_label.Create(dll_name_label));
         if st='' then
           exportsSection.concat(Tai_string.Create(current_module.modulename^+target_info.sharedlibext+#0))
         else
           exportsSection.concat(Tai_string.Create(st+target_info.sharedlibext+#0));

         {  export address table }
         address_table:=TAAsmoutput.create;
         address_table.concat(Tai_align.Create_op(4,0));
         address_table.concat(Tai_label.Create(export_address_table));
         name_table_pointers:=TAAsmoutput.create;
         name_table_pointers.concat(Tai_align.Create_op(4,0));
         name_table_pointers.concat(Tai_label.Create(export_name_table_pointers));
         ordinal_table:=TAAsmoutput.create;
         ordinal_table.concat(Tai_align.Create_op(4,0));
         ordinal_table.concat(Tai_label.Create(export_ordinal_table));
         name_table:=TAAsmoutput.Create;
         name_table.concat(Tai_align.Create_op(4,0));
         { write each address }
         hp:=texported_item(current_module._exports.first);
         while assigned(hp) do
           begin
              if (hp.options and eo_name)<>0 then
                begin
                   getlabel(name_label);
                   name_table_pointers.concat(Tai_const_symbol.Create_rva(name_label));
                   ordinal_table.concat(Tai_const.Create_16bit(hp.index-ordinal_base));
                   name_table.concat(Tai_align.Create_op(2,0));
                   name_table.concat(Tai_label.Create(name_label));
                   name_table.concat(Tai_string.Create(hp.name^+#0));
                end;
              hp:=texported_item(hp.next);
           end;
         { order in increasing ordinal values }
         { into temtexport list }
         temtexport:=TLinkedList.Create;
         hp:=texported_item(current_module._exports.first);
         while assigned(hp) do
           begin
              current_module._exports.remove(hp);
              hp2:=texported_item(temtexport.first);
              while assigned(hp2) and (hp.index>hp2.index) do
                begin
                   hp2:=texported_item(hp2.next);
                end;
              if hp2=texported_item(temtexport.first) then
                 temtexport.insert(hp)
              else
                begin
                   if assigned(hp2) then
                     begin
                        hp.next:=hp2;
                        hp.previous:=hp2.previous;
                        hp2.previous:=hp;
                        if assigned(hp.previous) then
                          hp.previous.next:=hp;
                      end
                    else
                      temtexport.concat(hp);
                end;
              hp:=texported_item(current_module._exports.first);;
           end;

         { write the export adress table }
         current_index:=ordinal_base;
         hp:=texported_item(temtexport.first);
         while assigned(hp) do
           begin
              { fill missing values }
              while current_index<hp.index do
                begin
                   address_table.concat(Tai_const.Create_32bit(0));
                   inc(current_index);
                end;
              address_table.concat(Tai_const_symbol.Createname_rva(hp.sym.mangledname));
              inc(current_index);
              hp:=texported_item(hp.next);
           end;

         exportsSection.concatlist(address_table);
         exportsSection.concatlist(name_table_pointers);
         exportsSection.concatlist(ordinal_table);
         exportsSection.concatlist(name_table);
         address_table.Free;
         name_table_pointers.free;
         ordinal_table.free;
         name_table.free;
         temtexport.free;
      end;

    procedure texportlibwin32.generatenasmlib;
      var
         hp : texported_item;
         p : pchar;
      begin
         exportssection.concat(tai_section.create(sec_code));
         hp:=texported_item(current_module._exports.first);
         while assigned(hp) do
           begin
             p:=strpnew(#9+'export '+hp.sym.mangledname+' '+hp.name^+' '+tostr(hp.index));
             exportssection.concat(tai_direct.create(p));
             hp:=texported_item(hp.next);
           end;
      end;


{****************************************************************************
                              TLINKERWIN32
****************************************************************************}


Constructor TLinkerWin32.Create;
begin
  Inherited Create;
  { allow duplicated libs (PM) }
  SharedLibFiles.doubles:=true;
  StaticLibFiles.doubles:=true;
  If not ForceDeffileForExport then
    UseDeffileForExport:=false;
end;

Procedure TLinkerWin32.SetDefaultInfo;
begin
  with Info do
   begin
     ExeCmd[1]:='ldw $OPT $STRIP $APPTYPE $IMAGEBASE $RELOC -o $EXE $RES';
     DllCmd[1]:='ldw $OPT $STRIP --dll $APPTYPE $IMAGEBASE $RELOC -o $EXE $RES';
     if RelocSection or UseDeffileForExport then
       begin
          { ExeCmd[2]:='dlltool --as $ASBIN --dllname $EXE --output-exp exp.$$$ $RELOC $DEF';
            use short forms to avoid 128 char limitation problem }
          ExeCmd[2]:='dlltool -S $ASBIN -D $EXE -e exp.$$$ $RELOC $DEF';
          ExeCmd[3]:='ldw $OPT $STRIP $APPTYPE $IMAGEBASE -o $EXE $RES exp.$$$';
          { DllCmd[2]:='dlltool --as $ASBIN --dllname $EXE --output-exp exp.$$$ $RELOC $DEF'; }
          DllCmd[2]:='dlltool -S $ASBIN -D $EXE -e exp.$$$ $RELOC $DEF';
          DllCmd[3]:='ldw $OPT $STRIP --dll $APPTYPE $IMAGEBASE -o $EXE $RES exp.$$$';
       end;
   end;
end;



Function TLinkerWin32.WriteResponseFile(isdll:boolean) : Boolean;
Var
  linkres : TLinkRes;
  HPath   : TStringListItem;
  s,s2    : string;
  i       : integer;
  linklibc,
  found   : boolean;
begin
  WriteResponseFile:=False;
  linklibc:=false;

  { Open link.res file }
  LinkRes:=TLinkRes.Create(outputexedir+Info.ResName);

  { Write path to search libraries }
  HPath:=TStringListItem(current_module.locallibrarysearchpath.First);
  while assigned(HPath) do
   begin
     LinkRes.Add('SEARCH_DIR('+GetShortName(HPath.Str)+')');
     HPath:=TStringListItem(HPath.Next);
   end;
  HPath:=TStringListItem(LibrarySearchPath.First);
  while assigned(HPath) do
   begin
     LinkRes.Add('SEARCH_DIR('+GetShortName(HPath.Str)+')');
     HPath:=TStringListItem(HPath.Next);
   end;

  { add objectfiles, start with prt0 always }
  LinkRes.Add('INPUT(');
  if isdll then
   LinkRes.AddFileName(GetShortName(FindObjectFile('wdllprt0','')))
  else
   LinkRes.AddFileName(GetShortName(FindObjectFile('wprt0','')));
  while not ObjectFiles.Empty do
   begin
     s:=ObjectFiles.GetFirst;
     if s<>'' then
      LinkRes.AddFileName(GetShortName(s));
   end;
  { add libaries required for profiling }
  if cs_profile in aktmoduleswitches then
   begin
     LinkRes.Add('-lgmon');
     LinkRes.Add('-lc');
   end;
  LinkRes.Add(')');

  { Write staticlibraries }
  if not StaticLibFiles.Empty then
   begin
     LinkRes.Add('GROUP(');
     While not StaticLibFiles.Empty do
      begin
        S:=StaticLibFiles.GetFirst;
        LinkRes.AddFileName(GetShortName(s));
      end;
     LinkRes.Add(')');
   end;

  { Write sharedlibraries }
  if not SharedLibFiles.Empty then
   begin
     LinkRes.Add('INPUT(') ;
     While not SharedLibFiles.Empty do
      begin
        S:=SharedLibFiles.GetFirst;
        if pos('.',s)=0 then
          { we never directly link a DLL
            its allways through an import library PM }
          { libraries created by C compilers have .a extensions }
          s2:=s+'.a'{ target_os.sharedlibext }
        else
          s2:=s;
        s2:=FindLibraryFile(s2,'',found);
        if found then
          begin
            LinkRes.Add(GetShortName(s2));
            continue;
          end;
        if pos(target_info.sharedlibprefix,s)=1 then
          s:=copy(s,length(target_info.sharedlibprefix)+1,255);
        if s<>'c' then
         begin
           i:=Pos(target_info.sharedlibext,S);
           if i>0 then
            Delete(S,i,255);
           LinkRes.Add('-l'+s);
         end
        else
         begin
           LinkRes.Add('-l'+s);
           linklibc:=true;
         end;
      end;
     { be sure that libc is the last lib }
     if linklibc then
      LinkRes.Add('-lc');
     LinkRes.Add(')');
   end;

{ Write and Close response }
  linkres.writetodisk;
  LinkRes.Free;

  WriteResponseFile:=True;
end;


function TLinkerWin32.MakeExecutable:boolean;
var
  binstr,
  cmdstr  : string;
  success : boolean;
  i       : longint;
  AsBinStr     : string[80];
  StripStr,
  RelocStr,
  AppTypeStr,
  ImageBaseStr : string[40];
begin
  if not(cs_link_extern in aktglobalswitches) then
   Message1(exec_i_linking,current_module.exefilename^);

{ Create some replacements }
  RelocStr:='';
  AppTypeStr:='';
  ImageBaseStr:='';
  StripStr:='';
  FindExe('asw',AsBinStr);
  if RelocSection then
   { Using short form to avoid problems with 128 char limitation under Dos. }
   RelocStr:='-b base.$$$';
  if apptype=app_gui then
   AppTypeStr:='--subsystem windows';
  if assigned(DLLImageBase) then
   ImageBaseStr:='--image-base=0x'+DLLImageBase^;
  if (cs_link_strip in aktglobalswitches) then
   StripStr:='-s';

{ Write used files and libraries }
  WriteResponseFile(false);

{ Call linker }
  success:=false;
  for i:=1 to 3 do
   begin
     SplitBinCmd(Info.ExeCmd[i],binstr,cmdstr);
     if binstr<>'' then
      begin
        Replace(cmdstr,'$EXE',maybequoted(current_module.exefilename^));
        Replace(cmdstr,'$OPT',Info.ExtraOptions);
        Replace(cmdstr,'$RES',maybequoted(outputexedir+Info.ResName));
        Replace(cmdstr,'$APPTYPE',AppTypeStr);
        Replace(cmdstr,'$ASBIN',AsbinStr);
        Replace(cmdstr,'$RELOC',RelocStr);
        Replace(cmdstr,'$IMAGEBASE',ImageBaseStr);
        Replace(cmdstr,'$STRIP',StripStr);
        if not DefFile.Empty {and UseDefFileForExport} then
          begin
            DefFile.WriteFile;
            Replace(cmdstr,'$DEF','-d '+maybequoted(deffile.fname));
          end
        else
          Replace(cmdstr,'$DEF','');
        success:=DoExec(FindUtil(binstr),cmdstr,(i=1),false);
        if not success then
         break;
      end;
   end;

{ Post process }
  if success then
   success:=PostProcessExecutable(current_module.exefilename^,false);

{ Remove ReponseFile }
  if (success) and not(cs_link_extern in aktglobalswitches) then
   begin
     RemoveFile(outputexedir+Info.ResName);
     RemoveFile('base.$$$');
     RemoveFile('exp.$$$');
     RemoveFile('deffile.$$$');
   end;

  MakeExecutable:=success;   { otherwise a recursive call to link method }
end;


Function TLinkerWin32.MakeSharedLibrary:boolean;
var
  binstr,
  cmdstr  : string;
  success : boolean;
  i       : longint;
  AsBinStr     : string[80];
  StripStr,
  RelocStr,
  AppTypeStr,
  ImageBaseStr : string[40];
begin
  MakeSharedLibrary:=false;
  if not(cs_link_extern in aktglobalswitches) then
   Message1(exec_i_linking,current_module.sharedlibfilename^);

{ Create some replacements }
  RelocStr:='';
  AppTypeStr:='';
  ImageBaseStr:='';
  StripStr:='';
  FindExe('asw',AsBinStr);
  if RelocSection then
   { Using short form to avoid problems with 128 char limitation under Dos. }
   RelocStr:='-b base.$$$';
  if apptype=app_gui then
   AppTypeStr:='--subsystem windows';
  if assigned(DLLImageBase) then
   ImageBaseStr:='--image-base=0x'+DLLImageBase^;
  if (cs_link_strip in aktglobalswitches) then
   StripStr:='-s';

{ Write used files and libraries }
  WriteResponseFile(true);

{ Call linker }
  success:=false;
  for i:=1 to 3 do
   begin
     SplitBinCmd(Info.DllCmd[i],binstr,cmdstr);
     if binstr<>'' then
      begin
        Replace(cmdstr,'$EXE',maybequoted(current_module.sharedlibfilename^));
        Replace(cmdstr,'$OPT',Info.ExtraOptions);
        Replace(cmdstr,'$RES',maybequoted(outputexedir+Info.ResName));
        Replace(cmdstr,'$APPTYPE',AppTypeStr);
        Replace(cmdstr,'$ASBIN',AsbinStr);
        Replace(cmdstr,'$RELOC',RelocStr);
        Replace(cmdstr,'$IMAGEBASE',ImageBaseStr);
        Replace(cmdstr,'$STRIP',StripStr);
        if not DefFile.Empty {and UseDefFileForExport} then
          begin
            DefFile.WriteFile;
            Replace(cmdstr,'$DEF','-d '+maybequoted(deffile.fname));
          end
        else
          Replace(cmdstr,'$DEF','');
        success:=DoExec(FindUtil(binstr),cmdstr,(i=1),false);
        if not success then
         break;
      end;
   end;

{ Post process }
  if success then
   success:=PostProcessExecutable(current_module.sharedlibfilename^,true);

{ Remove ReponseFile }
  if (success) and not(cs_link_extern in aktglobalswitches) then
   begin
     RemoveFile(outputexedir+Info.ResName);
     RemoveFile('base.$$$');
     RemoveFile('exp.$$$');
   end;
  MakeSharedLibrary:=success;   { otherwise a recursive call to link method }
end;


function tlinkerwin32.postprocessexecutable(const fn : string;isdll:boolean):boolean;
type
  tdosheader = packed record
     e_magic : word;
     e_cblp : word;
     e_cp : word;
     e_crlc : word;
     e_cparhdr : word;
     e_minalloc : word;
     e_maxalloc : word;
     e_ss : word;
     e_sp : word;
     e_csum : word;
     e_ip : word;
     e_cs : word;
     e_lfarlc : word;
     e_ovno : word;
     e_res : array[0..3] of word;
     e_oemid : word;
     e_oeminfo : word;
     e_res2 : array[0..9] of word;
     e_lfanew : longint;
  end;
  tpeheader = packed record
     PEMagic : array[0..3] of char;
     Machine : word;
     NumberOfSections : word;
     TimeDateStamp : longint;
     PointerToSymbolTable : longint;
     NumberOfSymbols : longint;
     SizeOfOptionalHeader : word;
     Characteristics : word;
     Magic : word;
     MajorLinkerVersion : byte;
     MinorLinkerVersion : byte;
     SizeOfCode : longint;
     SizeOfInitializedData : longint;
     SizeOfUninitializedData : longint;
     AddressOfEntryPoint : longint;
     BaseOfCode : longint;
     BaseOfData : longint;
     ImageBase : longint;
     SectionAlignment : longint;
     FileAlignment : longint;
     MajorOperatingSystemVersion : word;
     MinorOperatingSystemVersion : word;
     MajorImageVersion : word;
     MinorImageVersion : word;
     MajorSubsystemVersion : word;
     MinorSubsystemVersion : word;
     Reserved1 : longint;
     SizeOfImage : longint;
     SizeOfHeaders : longint;
     CheckSum : longint;
     Subsystem : word;
     DllCharacteristics : word;
     SizeOfStackReserve : longint;
     SizeOfStackCommit : longint;
     SizeOfHeapReserve : longint;
     SizeOfHeapCommit : longint;
     LoaderFlags : longint;
     NumberOfRvaAndSizes : longint;
     DataDirectory : array[1..$80] of byte;
  end;
  tcoffsechdr=packed record
    name     : array[0..7] of char;
    vsize    : longint;
    rvaofs   : longint;
    datalen  : longint;
    datapos  : longint;
    relocpos : longint;
    lineno1  : longint;
    nrelocs  : word;
    lineno2  : word;
    flags    : longint;
  end;
  psecfill=^tsecfill;
  tsecfill=record
    fillpos,
    fillsize : longint;
    next : psecfill;
  end;
var
  f : file;
  cmdstr : string;
  dosheader : tdosheader;
  peheader : tpeheader;
  firstsecpos,
  maxfillsize,
  l,peheaderpos : longint;
  coffsec : tcoffsechdr;
  secroot,hsecroot : psecfill;
  zerobuf : pointer;
begin
  postprocessexecutable:=false;
  { when -s is used or it's a dll then quit }
  if (cs_link_extern in aktglobalswitches) then
   begin
     case apptype of
       app_gui :
         cmdstr:='--subsystem gui';
       app_cui :
         cmdstr:='--subsystem console';
     end;
     if dllversion<>'' then
       cmdstr:=cmdstr+' --version '+dllversion;
     cmdstr:=cmdstr+' --input '+fn;
     cmdstr:=cmdstr+' --stack '+tostr(stacksize);
     DoExec(FindUtil('postw32'),cmdstr,false,false);
     postprocessexecutable:=true;
     exit;
   end;
  { open file }
  assign(f,fn);
  {$I-}
   reset(f,1);
  if ioresult<>0 then
    Message1(execinfo_f_cant_open_executable,fn);
  { read headers }
  blockread(f,dosheader,sizeof(tdosheader));
  peheaderpos:=dosheader.e_lfanew;
  seek(f,peheaderpos);
  blockread(f,peheader,sizeof(tpeheader));
  { write info }
  Message1(execinfo_x_codesize,tostr(peheader.SizeOfCode));
  Message1(execinfo_x_initdatasize,tostr(peheader.SizeOfInitializedData));
  Message1(execinfo_x_uninitdatasize,tostr(peheader.SizeOfUninitializedData));
  { change stack size (PM) }
  { I am not sure that the default value is adequate !! }
  peheader.SizeOfStackReserve:=stacksize;
  { change the header }
  { sub system }
  { gui=2 }
  { cui=3 }
  case apptype of
    app_gui :
      peheader.Subsystem:=2;
    app_cui :
      peheader.Subsystem:=3;
  end;
  if dllversion<>'' then
    begin
     peheader.MajorImageVersion:=dllmajor;
     peheader.MinorImageVersion:=dllminor;
    end;
  { reset timestamp }
  peheader.TimeDateStamp:=0;
  { write header back }
  seek(f,peheaderpos);
  blockwrite(f,peheader,sizeof(tpeheader));
  if ioresult<>0 then
    Message1(execinfo_f_cant_process_executable,fn);
  seek(f,peheaderpos);
  blockread(f,peheader,sizeof(tpeheader));
  { write the value after the change }
  Message1(execinfo_x_stackreserve,tostr(peheader.SizeOfStackReserve));
  Message1(execinfo_x_stackcommit,tostr(peheader.SizeOfStackCommit));
  { read section info }
  maxfillsize:=0;
  firstsecpos:=0;
  secroot:=nil;
  for l:=1 to peheader.NumberOfSections do
   begin
     blockread(f,coffsec,sizeof(tcoffsechdr));
     if coffsec.datapos>0 then
      begin
        if secroot=nil then
         firstsecpos:=coffsec.datapos;
        new(hsecroot);
        hsecroot^.fillpos:=coffsec.datapos+coffsec.vsize;
        hsecroot^.fillsize:=coffsec.datalen-coffsec.vsize;
        hsecroot^.next:=secroot;
        secroot:=hsecroot;
        if secroot^.fillsize>maxfillsize then
         maxfillsize:=secroot^.fillsize;
      end;
   end;
  if firstsecpos>0 then
   begin
     l:=firstsecpos-filepos(f);
     if l>maxfillsize then
      maxfillsize:=l;
   end
  else
   l:=0;
  { get zero buffer }
  getmem(zerobuf,maxfillsize);
  fillchar(zerobuf^,maxfillsize,0);
  { zero from sectioninfo until first section }
  blockwrite(f,zerobuf^,l);
  { zero section alignments }
  while assigned(secroot) do
   begin
     seek(f,secroot^.fillpos);
     blockwrite(f,zerobuf^,secroot^.fillsize);
     hsecroot:=secroot;
     secroot:=secroot^.next;
     dispose(hsecroot);
   end;
  freemem(zerobuf,maxfillsize);
  close(f);
  {$I+}
  if ioresult<>0 then;
  postprocessexecutable:=true;
end;


{****************************************************************************
                            TDLLScannerWin32
****************************************************************************}

    function tDLLScannerWin32.DOSstubOK(var x:cardinal):boolean;
      begin
        blockread(f,TheWord,2,loaded);
        if loaded<>2 then
         DOSstubOK:=false
        else
         begin
           DOSstubOK:=(TheWord='MZ');
           seek(f,$3C);
           blockread(f,x,4,loaded);
           if(loaded<>4)or(longint(x)>filesize(f))then
            DOSstubOK:=false;
         end;
      end;

    function TDLLScannerWin32.FindDLL(const s:string;var founddll:string):boolean;
      var
        sysdir : string;
        Found : boolean;
      begin
        Found:=false;
        { Look for DLL in:
          1. Current dir
          2. Library Path
          3. windir,windir/system,windir/system32 }
        Found:=FindFile(s,'.'+DirSep,founddll);
        if (not found) then
         Found:=librarysearchpath.FindFile(s,founddll);
        if (not found) then
         begin
           sysdir:=FixPath(GetEnv('windir'),false);
           Found:=FindFile(s,sysdir+';'+sysdir+'system'+DirSep+';'+sysdir+'system32'+DirSep,founddll);
         end;
        if (not found) then
         begin
           message1(exec_w_libfile_not_found,s);
           FoundDll:=s;
         end;
        FindDll:=Found;
      end;


    function tDLLScannerWin32.DllName(Const Name : string) : string;
      var n : string;
      begin
         n:=Upper(SplitExtension(Name));
         if (n='.DLL') or (n='.DRV') or (n='.EXE') then
           DllName:=Name
         else
           DllName:=Name+target_info.sharedlibext;
      end;



function tDLLScannerWin32.isSuitableFileType(x:cardinal):longbool;
 begin
  seek(f,x);
  blockread(f,TheWord,2,loaded);
  isSuitableFileType:=(loaded=2)and(TheWord='PE');
 end;


function tDLLScannerWin32.GetEdata(HeaderEntry:cardinal):longbool;
 type
  TObjInfo=packed record
   ObjName:array[0..7]of char;
   VirtSize,
   VirtAddr,
   RawSize,
   RawOffset,
   Reloc,
   LineNum:cardinal;
   RelCount,
   LineCount:word;
   flags:cardinal;
  end;
 var
  i:cardinal;
  ObjOfs:cardinal;
  Obj:TObjInfo;
  APE_obj,APE_Optsize:word;
  ExportRVA:cardinal;
  delta:cardinal;
 const
  IMAGE_SCN_CNT_CODE=$00000020;
 var
 _d:dirstr;
 _n:namestr;
 _e:extstr;
 function isUsedFunction(name:pchar):longbool;
  var
   hp:tExternalsItem;
  begin
   isUsedFunction:=false;
   hp:=tExternalsItem(current_module.Externals.first);
   while assigned(hp)do
    begin
     if(assigned(hp.data))and(not hp.found)then
      if hp.data^=StrPas(name)then
       begin
        isUsedFunction:=true;
        hp.found:=true;
        exit;
       end;
     hp:=tExternalsItem(hp.next);
    end;
  end;

 procedure Store(index:cardinal;name:pchar;isData:longbool);
  begin
   if not isUsedFunction(name)then
    exit;
   if not(current_module.uses_imports) then
    begin
     current_module.uses_imports:=true;
     importlib.preparelib(current_module.modulename^);
    end;
   if IsData then
    importlib.importvariable(name,_n,name)
   else
    importlib.importprocedure(name,_n,index,name);
  end;

 procedure ProcessEdata;
  type
   a8=array[0..7]of char;
  function GetSectionName(rva:cardinal;var Flags:cardinal):a8;
   var
    i:cardinal;
    LocObjOfs:cardinal;
    LocObj:TObjInfo;
   begin
    GetSectionName:='';
    Flags:=0;
    LocObjOfs:=APE_OptSize+HeaderOffset+24;
    for i:=1 to APE_obj do
     begin
      seek(f,LocObjOfs);
      blockread(f,LocObj,sizeof(LocObj));
      if(rva>=LocObj.VirtAddr)and(rva<=LocObj.VirtAddr+LocObj.RawSize)then
       begin
        GetSectionName:=a8(LocObj.ObjName);
        Flags:=LocObj.flags;
       end;
     end;
   end;
  var
   j,Fl:cardinal;
   ulongval,procEntry:cardinal;
   Ordinal:word;
   isData:longbool;
   ExpDir:packed record
    flag,
    stamp:cardinal;
    Major,
    Minor:word;
    Name,
    Base,
    NumFuncs,
    NumNames,
    AddrFuncs,
    AddrNames,
    AddrOrds:cardinal;
   end;
  begin
   with Obj do
    begin
     seek(f,RawOffset+delta);
     blockread(f,ExpDir,sizeof(ExpDir));
     fsplit(impname,_d,_n,_e);
     for j:=0 to pred(ExpDir.NumNames)do
      begin
       seek(f,RawOffset-VirtAddr+ExpDir.AddrOrds+j*2);
       blockread(f,Ordinal,2);
       seek(f,RawOffset-VirtAddr+ExpDir.AddrFuncs+cardinal(Ordinal)*4);
       blockread(f,ProcEntry,4);
       seek(f,RawOffset-VirtAddr+ExpDir.AddrNames+j*4);
       blockread(f,ulongval,4);
       seek(f,RawOffset-VirtAddr+ulongval);
       blockread(f,cstring,sizeof(cstring));
       isData:=GetSectionName(procentry,Fl)='';
       if not isData then
        isData:=Fl and IMAGE_SCN_CNT_CODE<>IMAGE_SCN_CNT_CODE;
       Store(succ(Ordinal),cstring,isData);
      end;
   end;
  end;
 begin
  GetEdata:=false;
  seek(f,HeaderEntry+120);
  blockread(f,ExportRVA,4);
  seek(f,HeaderEntry+6);
  blockread(f,APE_Obj,2);
  seek(f,HeaderEntry+20);
  blockread(f,APE_OptSize,2);
  ObjOfs:=APE_OptSize+HeaderOffset+24;
  for i:=1 to APE_obj do
   begin
    seek(f,ObjOfs);
    blockread(f,Obj,sizeof(Obj));
    inc(ObjOfs,sizeof(Obj));
    with Obj do
     if(VirtAddr<=ExportRva)and(ExportRva<VirtAddr+VirtSize)then
      begin
       delta:=ExportRva-VirtAddr;
       ProcessEdata;
       GetEdata:=true;
      end;
   end;
 end;

function tDLLScannerWin32.scan(const binname:string):longbool;
 var
  OldFileMode:longint;
 begin
   Scan:=false;
  if not FindDll(DLLName(binname),impname) then
   exit;
  assign(f,impname);
  OldFileMode:=filemode;
  filemode:=0;
  reset(f,1);
  filemode:=OldFileMode;
  if not DOSstubOK(HeaderOffset)then
   scan:=false
  else if not isSuitableFileType(HeaderOffset)then
   scan:=false
  else
   scan:=GetEdata(HeaderOffset);
  close(f);
 end;


{*****************************************************************************
                                     Initialize
*****************************************************************************}

    const
      ar_gnu_arw_info : tarinfo =
          (
            id    : ar_gnu_arw;
            arcmd : 'arw rs $LIB $FILES'
          );

    const
      res_gnu_windres_info : tresinfo =
          (
            id     : res_gnu_windres;
            resbin : 'windres';
            rescmd : '--include $INC -O coff -o $OBJ $RES'
          );

    const
       target_i386_win32_info : ttargetinfo =
          (
            target       : target_i386_WIN32;
            name         : 'Win32 for i386';
            shortname    : 'Win32';
            flags        : [];
            cpu          : i386;
            unit_env     : 'WIN32UNITS';
            extradefines : 'MSWINDOWS';
            sharedlibext : '.dll';
            staticlibext : '.aw';
            sourceext    : '.pp';
            pasext       : '.pas';
            exeext       : '.exe';
            defext       : '.def';
            scriptext    : '.bat';
            smartext     : '.slw';
            unitext      : '.ppw';
            unitlibext   : '.ppl';
            asmext       : '.sw';
            objext       : '.ow';
            resext       : '.rc';
            resobjext    : '.owr';
            staticlibprefix : 'libp';
            sharedlibprefix : '';
            Cprefix      : '_';
            newline      : #13#10;
            assem        : as_i386_pecoff;
            assemextern  : as_i386_asw;
            link         : ld_i386_win32;
            linkextern   : ld_i386_win32;
            ar           : ar_gnu_arw;
            res          : res_gnu_windres;
            script       : script_dos;
            endian       : endian_little;
            alignment    :
              (
                procalign       : 4;
                loopalign       : 4;
                jumpalign       : 0;
                constalignmin   : 0;
                constalignmax   : 1;
                varalignmin     : 0;
                varalignmax     : 1;
                localalignmin   : 0;
                localalignmax   : 1;
                paraalign       : 4;
                recordalignmin  : 0;
                recordalignmax  : 2;
                maxCrecordalign : 16
              );
            size_of_pointer : 4;
            size_of_longint : 4;
            heapsize     : 256*1024;
            maxheapsize  : 32*1024*1024;
            stacksize    : 32*1024*1024;
            DllScanSupported:true;
            use_bound_instruction : false;
            use_function_relative_addresses : true
          );


initialization
  RegisterLinker(ld_i386_win32,TLinkerWin32);
  RegisterImport(target_i386_win32,TImportLibWin32);
  RegisterExport(target_i386_win32,TExportLibWin32);
  RegisterDLLScanner(target_i386_win32,TDLLScannerWin32);
  RegisterAr(ar_gnu_arw_info);
  RegisterRes(res_gnu_windres_info);
  RegisterTarget(target_i386_win32_info);
end.
{
  $Log$
  Revision 1.16  2001-09-13 14:47:19  michael
  + Committed patch from peter

  Revision 1.15  2001/08/07 18:47:15  peter
    * merged netbsd start
    * profile for win32

  Revision 1.14  2001/07/01 20:16:21  peter
    * alignmentinfo record added
    * -Oa argument supports more alignment settings that can be specified
      per type: PROC,LOOP,VARMIN,VARMAX,CONSTMIN,CONSTMAX,RECORDMIN
      RECORDMAX,LOCALMIN,LOCALMAX. It is possible to set the mimimum
      required alignment and the maximum usefull alignment. The final
      alignment will be choosen per variable size dependent on these
      settings

  Revision 1.13  2001/06/28 19:46:25  peter
    * added override and virtual for constructors

  Revision 1.12  2001/06/18 20:36:26  peter
    * -Ur switch (merged)
    * masm fixes (merged)
    * quoted filenames for go32v2 and win32

  Revision 1.11  2001/06/06 21:58:16  peter
    * Win32 fixes for Makefile so it doesn't require sh.exe

  Revision 1.10  2001/06/03 20:18:13  peter
    * define also MSWINDOWS

  Revision 1.9  2001/06/03 15:15:32  peter
    * dllprt0 stub for linux shared libs
    * pass -init and -fini for linux shared libs
    * libprefix splitted into staticlibprefix and sharedlibprefix

  Revision 1.8  2001/06/02 19:22:44  peter
    * extradefines field added

  Revision 1.7  2001/04/21 13:33:16  peter
    * move winstackpagesize const to cgai386 to remove uses t_win32

  Revision 1.6  2001/04/18 22:02:04  peter
    * registration of targets and assemblers

  Revision 1.5  2001/04/13 23:51:02  peter
    * fix for the stricter compilemode

  Revision 1.4  2001/04/13 01:22:22  peter
    * symtable change to classes
    * range check generation and errors fixed, make cycle DEBUG=1 works
    * memory leaks fixed

  Revision 1.3  2001/04/02 21:20:40  peter
    * resulttype rewrite

  Revision 1.2  2001/03/06 18:28:02  peter
    * patch from Pavel with a new and much faster DLL Scanner for
      automatic importing so $linklib works for DLLs. Thanks Pavel!

  Revision 1.1  2001/02/26 19:43:11  peter
    * moved target units to subdir

  Revision 1.10  2001/02/20 21:41:16  peter
    * new fixfilename, findfile for unix. Look first for lowercase, then
      NormalCase and last for UPPERCASE names.

  Revision 1.9  2001/01/13 00:09:22  peter
    * made Pavel O. happy ;)

  Revision 1.8  2000/12/30 22:53:25  peter
    * export with the case provided in the exports section

  Revision 1.7  2000/12/25 00:07:30  peter
    + new tlinkedlist class (merge of old tstringqueue,tcontainer and
      tlinkedlist objects)

  Revision 1.6  2000/11/12 22:20:37  peter
    * create generic toutputsection for binary writers

  Revision 1.5  2000/09/24 15:06:31  peter
    * use defines.inc

  Revision 1.4  2000/08/27 16:11:54  peter
    * moved some util functions from globals,cobjects to cutils
    * splitted files into finput,fmodule

  Revision 1.3  2000/07/21 15:14:02  jonas
    + added is_addr field for labels, if they are only used for getting the address
       (e.g. for io checks) and corresponding getaddrlabel() procedure

  Revision 1.2  2000/07/13 11:32:50  michael
  + removed logs

}