{
    $Id$
    Copyright (C) 1998-2000 by Florian Klaempfl

    This unit contains information about the target systems supported
    (these are not processor specific)

    This progsam is free software; you can redistribute it and/or modify
    iu under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 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 systems;

{$i defines.inc}

interface

   type
       tendian = (endian_little,endian_big);

       ttargetcpu=(no_cpu
            ,i386,m68k,alpha,powerpc
       );

       tprocessors = (no_processor
            ,Class386,ClassP5,ClassP6
            ,MC68000,MC68100,MC68020
       );

       tsection=(sec_none,
         sec_code,sec_data,sec_bss,
         sec_idata2,sec_idata4,sec_idata5,sec_idata6,sec_idata7,sec_edata,
         sec_stab,sec_stabstr
       );

       tasmmode= (asmmode_none
            ,asmmode_i386_direct,asmmode_i386_att,asmmode_i386_intel
            ,asmmode_m68k_mot
            ,asmmode_alpha_direct
            ,asmmode_powerpc_direct
       );

       ttarget = (target_none,
            target_i386_GO32V1,target_i386_GO32V2,target_i386_linux,
              target_i386_OS2,target_i386_Win32,target_i386_freebsd,
              target_i386_Netware,target_i386_sunos,target_i386_beos,
            target_m68k_Amiga,target_m68k_Atari,target_m68k_Mac,
              target_m68k_linux,target_m68k_PalmOS,
            target_alpha_linux,
            target_powerpc_linux,target_powerpc_macos
       );

       tasm = (as_none
            ,as_i386_as,as_i386_as_aout,as_i386_asw,
              as_i386_nasmcoff,as_i386_nasmwin32,
              as_i386_nasmelf,as_i386_nasmobj,
              as_i386_tasm,as_i386_masm,
              as_i386_dbg,as_i386_coff,as_i386_pecoff,as_i386_elf32
            ,as_m68k_as,as_m68k_gas,as_m68k_mit,as_m68k_mot,as_m68k_mpw
            ,as_alpha_as
            ,as_powerpc_as,as_powerpc_mpw
       );

       tld = (ld_none,
            ld_i386_GO32V1,ld_i386_GO32V2,ld_i386_linux,
              ld_i386_OS2,ld_i386_Win32,ld_i386_freebsd,
              ld_i386_Netware,ld_i386_sunos,ld_i386_beos,
            ld_m68k_Amiga,ld_m68k_Atari,ld_m68k_Mac,
              ld_m68k_linux,ld_m68k_PalmOS,
            ld_alpha_linux,
            ld_powerpc_linux,ld_powerpc_macos
       );

       tar = (ar_none
            ,ar_gnu_ar,ar_gnu_arw
       );

       tres = (res_none
            ,res_gnu_windres,res_emxbind
       );


{*****************************************************************************
                               Structures
*****************************************************************************}

     type
       pasminfo = ^tasminfo;
       tasminfo = packed record
          id          : tasm;
          idtxt       : string[9];
          asmbin      : string[8];
          asmcmd      : string[50];
          supported_target : ttarget;
          outputbinary,
          allowdirect,
          externals,
          needar,
          labelprefix_only_inside_procedure : boolean;
          labelprefix : string[3];
          comment     : string[2];
          secnames    : array[tsection] of string[20];
       end;

       parinfo = ^tarinfo;
       tarinfo = packed record
          id      : tar;
          arcmd   : string[50];
       end;

       presinfo = ^tresinfo;
       tresinfo = packed record
          id      : tres;
          resbin  : string[8];
          rescmd  : string[50];
       end;

       ttargetflags = (tf_none,
            tf_supports_stack_checking,tf_need_export,tf_needs_isconsole
       );

       ptargetinfo = ^ttargetinfo;
       ttargetinfo = packed record
          target       : ttarget;
          name         : string[30];
          shortname    : string[9];
          flags        : set of ttargetflags;
          cpu          : ttargetcpu;
          unit_env     : string[12];
          extradefines : string[40];
          sharedlibext : string[10];
          staticlibext,
          sourceext,
          pasext,
          exeext,
          defext,
          scriptext,
          smartext,
          unitext,
          unitlibext,
          asmext,
          objext,
          resext,
          resobjext    : string[4];
          staticlibprefix : string[4];
          sharedlibprefix : string[4];
          Cprefix      : string[2];
          newline      : string[2];
          assem        : tasm;
          assemextern  : tasm; { external assembler, used by -a }
          link         : tld;
          linkextern   : tld;  { external linker, used by -s }
          ar           : tar;
          res          : tres;
          endian          : tendian;
          stackalignment  : word;
          maxCrecordalignment : word;
          size_of_pointer : byte;
          size_of_longint : byte;
          heapsize,
          maxheapsize,
          stacksize       : longint;
          DllScanSupported : boolean;
          use_bound_instruction : boolean;
          use_function_relative_addresses : boolean;
       end;

       pasmmodeinfo = ^tasmmodeinfo;
       tasmmodeinfo = packed record
          id    : tasmmode;
          idtxt : string[8];
       end;

    const
       { alias for supported_target field in tasminfo }
       target_any = target_none;

    var
       targetinfos   : array[ttarget] of ptargetinfo;
       asminfos      : array[tasm] of pasminfo;
       arinfos       : array[tar] of parinfo;
       resinfos      : array[tres] of presinfo;
       asmmodeinfos  : array[tasmmode] of pasmmodeinfo;

       source_info : ttargetinfo;
       target_cpu  : ttargetcpu;
       target_info : ttargetinfo;
       target_asm  : tasminfo;
       target_ar   : tarinfo;
       target_res  : tresinfo;
       target_path : string[12]; { for rtl/<X>/,fcl/<X>/, etc. }

    function set_target(t:ttarget):boolean;
    function set_target_asm(t:tasm):boolean;
    function set_target_ar(t:tar):boolean;
    function set_target_res(t:tres):boolean;

    function set_target_by_string(const s : string) : boolean;
    function set_target_asm_by_string(const s : string) : boolean;
    function set_asmmode_by_string(const s:string;var t:tasmmode):boolean;

    procedure RegisterTarget(const r:ttargetinfo);
    procedure RegisterAsmMode(const r:tasmmodeinfo);
    procedure RegisterRes(const r:tresinfo);
    procedure RegisterAr(const r:tarinfo);

    procedure InitSystems;


implementation

    uses
      cutils;

{****************************************************************************
                              Target setting
****************************************************************************}

function set_target(t:ttarget):boolean;
begin
  set_target:=false;
  if assigned(targetinfos[t]) then
   begin
     target_info:=targetinfos[t]^;
     set_target_asm(target_info.assem);
     set_target_ar(target_info.ar);
     set_target_res(target_info.res);
     target_path:=lower(target_info.shortname);
     target_cpu:=target_info.cpu;
     set_target:=true;
     exit;
   end;
end;


function set_target_asm(t:tasm):boolean;
begin
  set_target_asm:=false;
  if assigned(asminfos[t]) then
   begin
     target_asm:=asminfos[t]^;
     set_target_asm:=true;
     exit;
   end;
end;


function set_target_ar(t:tar):boolean;
begin
  set_target_ar:=false;
  if assigned(arinfos[t]) then
   begin
     target_ar:=arinfos[t]^;
     set_target_ar:=true;
     exit;
   end;
end;


function set_target_res(t:tres):boolean;
begin
  set_target_res:=false;
  if assigned(resinfos[t]) then
   begin
     target_res:=resinfos[t]^;
     set_target_res:=true;
     exit;
   end;
end;


function set_target_by_string(const s : string) : boolean;
var
  hs : string;
  t  : ttarget;
begin
  set_target_by_string:=false;
  { this should be case insensitive !! PM }
  hs:=upper(s);
  for t:=low(ttarget) to high(ttarget) do
   if assigned(targetinfos[t]) and
      (upper(targetinfos[t]^.shortname)=hs) then
    begin
      set_target_by_string:=set_target(t);
      exit;
    end;
end;


function set_target_asm_by_string(const s : string) : boolean;
var
  hs : string;
  t  : tasm;
begin
  set_target_asm_by_string:=false;
  { this should be case insensitive !! PM }
  hs:=upper(s);
  for t:=low(tasm) to high(tasm) do
   if assigned(asminfos[t]) and
      (asminfos[t]^.idtxt=hs) then
    begin
      set_target_asm_by_string:=set_target_asm(t);
      exit;
    end;
end;


function set_asmmode_by_string(const s:string;var t:tasmmode):boolean;
var
  hs : string;
  ht : tasmmode;
begin
  set_asmmode_by_string:=false;
  { this should be case insensitive !! PM }
  hs:=upper(s);
  for ht:=low(tasmmode) to high(tasmmode) do
   if assigned(asmmodeinfos[ht]) and
      (asmmodeinfos[ht]^.idtxt=hs) then
    begin
      t:=asmmodeinfos[ht]^.id;
      set_asmmode_by_string:=true;
    end;
end;


{****************************************************************************
                              Target registration
****************************************************************************}

procedure RegisterTarget(const r:ttargetinfo);
var
  t : ttarget;
begin
  t:=r.target;
  if assigned(targetinfos[t]) then
   writeln('Warning: Target is already registered!')
  else
   Getmem(targetinfos[t],sizeof(ttargetinfo));
  targetinfos[t]^:=r;
end;


procedure RegisterAsmmode(const r:tasmmodeinfo);
var
  t : tasmmode;
begin
  t:=r.id;
  if assigned(asmmodeinfos[t]) then
    writeln('Warning: Asmmode is already registered!')
  else
    Getmem(asmmodeinfos[t],sizeof(tasmmodeinfo));
  asmmodeinfos[t]^:=r;
end;


procedure RegisterRes(const r:tresinfo);
var
  t : tres;
begin
  t:=r.id;
  if assigned(resinfos[t]) then
    writeln('Warning: resourcecompiler is already registered!')
  else
    Getmem(resinfos[t],sizeof(tresinfo));
  resinfos[t]^:=r;
end;


procedure RegisterAr(const r:tarinfo);
var
  t : tar;
begin
  t:=r.id;
  if assigned(arinfos[t]) then
    writeln('Warning: ar is already registered!')
  else
    Getmem(arinfos[t],sizeof(tarinfo));
  arinfos[t]^:=r;
end;


procedure DeregisterInfos;
var
  assem   : tasm;
  target  : ttarget;
  ar      : tar;
  asmmode : tasmmode;
  res     : tres;
begin
  for target:=low(ttarget) to high(ttarget) do
   if assigned(targetinfos[target]) then
    begin
      freemem(targetinfos[target],sizeof(ttargetinfo));
      targetinfos[target]:=nil;
    end;
  for assem:=low(tasm) to high(tasm) do
   if assigned(asminfos[assem]) then
    begin
      freemem(asminfos[assem],sizeof(tasminfo));
      asminfos[assem]:=nil;
    end;
  for ar:=low(tar) to high(tar) do
   if assigned(arinfos[ar]) then
    begin
      freemem(arinfos[ar],sizeof(tarinfo));
      arinfos[ar]:=nil;
    end;
  for res:=low(tres) to high(tres) do
   if assigned(resinfos[res]) then
    begin
      freemem(resinfos[res],sizeof(tresinfo));
      resinfos[res]:=nil;
    end;
  for asmmode:=low(tasmmode) to high(tasmmode) do
   if assigned(asmmodeinfos[asmmode]) then
    begin
      freemem(asmmodeinfos[asmmode],sizeof(tasmmodeinfo));
      asmmodeinfos[asmmode]:=nil;
    end;
end;


{****************************************************************************
                      Initialization of default target
****************************************************************************}

procedure default_target(t:ttarget);
begin
  set_target(t);
  if source_info.name='' then
    source_info:=target_info;
end;


procedure set_source(t:ttarget);
begin
{ can't use message() here (PFV) }
  if source_info.name<>'' then
    Writeln('Warning: Source OS Redefined!');
  if assigned(targetinfos[t]) then
   source_info:=targetinfos[t]^
  else
   Writeln('Warning: Source OS Not Supported!');
end;


procedure InitSystems;
begin
{ first get source OS }
  source_info.name:='';
{ please note then we use cpu86 and cpu68 here on purpose !! }
{$ifdef cpu86}
  {$ifdef GO32V1}
    set_source(target_i386_GO32V1);
  {$else}
    {$ifdef GO32V2}
      set_source(target_i386_GO32V2);
    {$else}
      {$ifdef OS2}
        set_source(target_i386_OS2);
        if (target_Mode = osDOS) or (target_Mode = osDPMI) then
         source_info.scriptext := '.bat';
        { OS/2 via EMX can be run under DOS as well }
      {$else}
        {$ifdef WIN32}
          set_source(target_i386_WIN32);
        {$else}
          {$Ifdef BSD}
            set_source(target_i386_FreeBSD);
          {$else}
            {$ifdef sunos}
              set_source(target_i386_sunos);
            {$else}
              { Must be the last as some freebsd also
                defined linux }
              {$ifdef Linux}
                set_source(target_i386_LINUX);
              {$endif linux}
            {$endif sunos}
          {$endif bsd}
        {$endif win32}
      {$endif os2}
    {$endif go32v2}
  {$endif go32v1}
{$endif cpu86}
{$ifdef cpu68}
  {$ifdef AMIGA}
    set_source(target_m68k_Amiga);
  {$else}
    {$ifdef ATARI}
      set_source(target_m68k_Atari);
    {$else}
      {$ifdef MACOS}
        set_source(target_m68k_MAC);
      {$else}
        {$ifdef LINUX}
           set_source(target_m68k_linux);
        {$endif linux}
      {$endif macos}
    {$endif atari}
  {$endif amiga}
{$endif cpu68}

{ Now default target !! }
{$ifdef i386}
  {$ifdef GO32V1}
     default_target(target_i386_GO32V1);
  {$else}
    {$ifdef GO32V2}
      default_target(target_i386_GO32V2);
    {$else}
      {$ifdef OS2}
        default_target(target_i386_OS2);
      {$else}
        {$ifdef LINUX}
         {$ifdef BSD}
          default_target(target_i386_FreeBSD);
         {$else}
          default_target(target_i386_LINUX);
         {$endif}
        {$else}
           {$ifdef WIN32}
             default_target(target_i386_WIN32);
           {$else}
             default_target(target_i386_GO32V2);
           {$endif win32}
        {$endif linux}
      {$endif os2}
    {$endif go32v2}
  {$endif go32v1}
{$endif i386}
{$ifdef m68k}
  {$ifdef AMIGA}
    default_target(target_m68k_Amiga);
  {$else}
    {$ifdef ATARI}
      default_target(target_m68k_Atari);
    {$else}
      {$ifdef MACOS}
        default_target(target_m68k_Mac);
      {$else}
        {$ifdef LINUX}
          default_target(target_m68k_linux);
        {$else}
          default_target(target_m68k_Amiga);
        {$endif linux}
      {$endif macos}
    {$endif atari}
  {$endif amiga}
{$endif m68k}
{$ifdef alpha}
  default_target(target_alpha_linux);
{$endif alpha}
{$ifdef powerpc}
  default_target(target_powerpc_linux);
{$endif powerpc}
end;


initialization
finalization
  DeregisterInfos;
end.
{
  $Log$
  Revision 1.19  2001-06-03 20:21:08  peter
    * Kylix fixes, mostly case names of units

  Revision 1.18  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 1.17  2001/06/02 19:21:45  peter
    * extradefines field added to target_info, so that targets don't
      need to put code in options.pas for it

  Revision 1.16  2001/04/18 22:02:00  peter
    * registration of targets and assemblers

  Revision 1.15  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 1.14  2001/02/26 19:44:55  peter
    * merged generic m68k updates from fixes branch

  Revision 1.13  2001/02/20 21:36:40  peter
    * tasm/masm fixes merged

  Revision 1.12  2001/01/06 20:15:43  peter
    * merged libp library prefix

  Revision 1.11  2000/10/15 09:08:58  peter
    * use System for the systemunit instead of target dependent

  Revision 1.10  2000/09/24 21:12:41  hajny
    * OS/2 stack alignment corrected + default stack increased

  Revision 1.9  2000/09/24 15:06:30  peter
    * use defines.inc

  Revision 1.8  2000/09/20 10:49:39  marco
   * Set writer to elf. (Only a prob for smart with -OG3p3r)

  Revision 1.7  2000/09/16 12:22:52  peter
    * freebsd support merged

  Revision 1.6  2000/09/11 17:00:23  florian
    + first implementation of Netware Module support, thanks to
      Armin Diehl (diehl@nordrhein.de) for providing the patches

  Revision 1.5  2000/08/12 19:14:59  peter
    * ELF writer works now also with -g
    * ELF writer is default again for linux

  Revision 1.4  2000/07/14 21:29:38  michael
  * Back to external assembler till peter fixes gdb

  Revision 1.3  2000/07/13 12:08:28  michael
  + patched to 1.1.0 with former 1.09patch from peter

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

}