freepascal.compiler/compiler/targets/t_go32v1.pas

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

    This unit implements support import,export,link routines
    for the (i386) go32v1 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_go32v1;

{$i defines.inc}

interface

  uses
    link;

  type
    tlinkergo32v1=class(tlinker)
    private
       Function  WriteResponseFile(isdll:boolean) : Boolean;
    public
       constructor Create;override;
       procedure SetDefaultInfo;override;
       function  MakeExecutable:boolean;override;
    end;


  implementation

    uses
       cutils,cclasses,
       globtype,globals,systems,verbose,script,fmodule;


{****************************************************************************
                               TLinkergo32v1
****************************************************************************}

Constructor TLinkergo32v1.Create;
begin
  Inherited Create;
  { allow duplicated libs (PM) }
  SharedLibFiles.doubles:=true;
  StaticLibFiles.doubles:=true;
end;


procedure TLinkergo32v1.SetDefaultInfo;
begin
  with Info do
   begin
     ExeCmd[1]:='ld -oformat coff-go32 $OPT $STRIP -o $EXE @$RES';
     ExeCmd[2]:='aout2exe $EXE';
   end;
end;


Function TLinkergo32v1.WriteResponseFile(isdll:boolean) : Boolean;
Var
  linkres  : TLinkRes;
  i        : longint;
  HPath    : TStringListItem;
  s        : string;
  linklibc : boolean;
begin
  WriteResponseFile:=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('-L'+HPath.Str);
     HPath:=TStringListItem(HPath.Next);
   end;
  HPath:=TStringListItem(LibrarySearchPath.First);
  while assigned(HPath) do
   begin
     LinkRes.Add('-L'+HPath.Str);
     HPath:=TStringListItem(HPath.Next);
   end;

  { add objectfiles, start with prt0 always }
  LinkRes.AddFileName(FindObjectFile('prt0',''));
  while not ObjectFiles.Empty do
   begin
     s:=ObjectFiles.GetFirst;
     if s<>'' then
      LinkRes.AddFileName(s);
   end;

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

  { Write sharedlibraries like -l<lib>, also add the needed dynamic linker
    here to be sure that it gets linked this is needed for glibc2 systems (PFV) }
  linklibc:=false;
  While not SharedLibFiles.Empty do
   begin
     S:=SharedLibFiles.GetFirst;
     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&libgcc is the last lib }
  if linklibc then
   begin
     LinkRes.Add('-lc');
     LinkRes.Add('-lgcc');
   end;

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

  WriteResponseFile:=True;
end;


function TLinkergo32v1.MakeExecutable:boolean;
var
  binstr,
  cmdstr  : string;
  success : boolean;
  StripStr : string[40];
begin
  if not(cs_link_extern in aktglobalswitches) then
   Message1(exec_i_linking,current_module.exefilename^);

{ Create some replacements }
  StripStr:='';
  if (cs_link_strip in aktglobalswitches) then
   StripStr:='-s';

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

{ Call linker }
  SplitBinCmd(Info.ExeCmd[1],binstr,cmdstr);
  Replace(cmdstr,'$EXE',current_module.exefilename^);
  Replace(cmdstr,'$OPT',Info.ExtraOptions);
  Replace(cmdstr,'$RES',outputexedir+Info.ResName);
  Replace(cmdstr,'$STRIP',StripStr);
  success:=DoExec(FindUtil(BinStr),cmdstr,true,false);

{ Remove ReponseFile }
  if (success) and not(cs_link_extern in aktglobalswitches) then
   RemoveFile(outputexedir+Info.ResName);

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


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

    const
       target_i386_go32v1_info : ttargetinfo =
          (
            target       : target_i386_GO32V1;
            name         : 'GO32 V1 DOS extender';
            shortname    : 'Go32v1';
            flags        : [];
            cpu          : i386;
            unit_env     : 'GO32V1UNITS';
            extradefines : '';
            sharedlibext : '.dll';
            staticlibext : '.a';
            sourceext    : '.pp';
            pasext       : '.pas';
            exeext       : '';      { No .exe, the linker only output a.out ! }
            defext       : '.def';
            scriptext    : '.bat';
            smartext     : '.sl';
            unitext      : '.pp1';
            unitlibext   : '.ppl';
            asmext       : '.s1';
            objext       : '.o1';
            resext       : '.res';
            resobjext    : '.o1r';
            staticlibprefix : '';
            sharedlibprefix : '';
            Cprefix      : '_';
            newline      : #13#10;
            assem        : as_i386_as;
            assemextern  : as_i386_as;
            link         : ld_i386_go32v1;
            linkextern   : ld_i386_go32v1;
            ar           : ar_gnu_ar;
            res          : res_none;
            endian       : endian_little;
            stackalignment : 2;
            maxCrecordalignment : 4;
            size_of_pointer : 4;
            size_of_longint : 4;
            heapsize     : 2048*1024;
            maxheapsize  : 32768*1024;
            stacksize    : 16384;
            DllScanSupported:false;
            use_bound_instruction : false;
            use_function_relative_addresses : true
          );


initialization
  RegisterLinker(ld_i386_go32v1,TLinkerGo32v1);
  RegisterTarget(target_i386_go32v1_info);
end.
{
  $Log$
  Revision 1.6  2001-06-28 19:46:25  peter
    * added override and virtual for constructors

  Revision 1.5  2001/06/03 15:15:31  peter
    * dllprt0 stub for linux shared libs
    * pass -init and -fini for linux shared libs
    * libprefix splitted into staticlibprefix and sharedlibprefix

  Revision 1.4  2001/06/02 19:22:44  peter
    * extradefines field added

  Revision 1.3  2001/04/18 22:02:04  peter
    * registration of targets and assemblers

  Revision 1.2  2001/04/13 01:22:21  peter
    * symtable change to classes
    * range check generation and errors fixed, make cycle DEBUG=1 works
    * memory leaks fixed

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

  Revision 1.5  2000/12/25 00:07:30  peter
    + new tlinkedlist class (merge of old tstringqueue,tcontainer and
      tlinkedlist objects)

  Revision 1.4  2000/09/24 15:06:30  peter
    * use defines.inc

  Revision 1.3  2000/08/27 16:11:54  peter
    * moved some util functions from globals,cobjects to cutils
    * splitted files into finput,fmodule

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

}