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{
This unit implements support import,export,link routines
for the (arm) GameBoy Advance target
Copyright (c) 2001-2002 by Peter Vreman
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_gba;
{$i fpcdefs.inc}
interface
implementation
uses
link,
cutils,cclasses,
globtype,globals,systems,verbose,script,fmodule,i_gba;
type
TlinkerGBA=class(texternallinker)
private
Function WriteResponseFile: Boolean;
public
constructor Create; override;
procedure SetDefaultInfo; override;
function MakeExecutable:boolean; override;
end;
{*****************************************************************************
TLINKERGBA
*****************************************************************************}
Constructor TLinkerGba.Create;
begin
Inherited Create;
SharedLibFiles.doubles:=true;
StaticLibFiles.doubles:=true;
end;
procedure TLinkerGba.SetDefaultInfo;
begin
with Info do
begin
ExeCmd[1]:='ld $OPT $DYNLINK $STATIC $GCSECTIONS $STRIP -L. -o $EXE $RES';
end;
end;
Function TLinkerGba.WriteResponseFile: 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
s:=HPath.Str;
if (cs_link_on_target in aktglobalswitches) then
s:=ScriptFixFileName(s);
LinkRes.Add('-L'+s);
HPath:=TStringListItem(HPath.Next);
end;
HPath:=TStringListItem(LibrarySearchPath.First);
while assigned(HPath) do
begin
s:=HPath.Str;
if s<>'' then
LinkRes.Add('SEARCH_DIR('+(maybequoted(s))+')');
HPath:=TStringListItem(HPath.Next);
end;
LinkRes.Add('INPUT (');
{ add objectfiles, start with prt0 always }
s:=FindObjectFile('prt0','',false);
LinkRes.AddFileName(s);
while not ObjectFiles.Empty do
begin
s:=ObjectFiles.GetFirst;
if s<>'' then
begin
{ vlink doesn't use SEARCH_DIR for object files }
if not(cs_link_on_target in aktglobalswitches) then
s:=FindObjectFile(s,'',false);
LinkRes.AddFileName((maybequoted(s)));
end;
end;
{ Write staticlibraries }
if not StaticLibFiles.Empty then
begin
{ vlink doesn't need, and doesn't support GROUP }
if (cs_link_on_target in aktglobalswitches) then
begin
LinkRes.Add(')');
LinkRes.Add('GROUP(');
end;
while not StaticLibFiles.Empty do
begin
S:=StaticLibFiles.GetFirst;
LinkRes.AddFileName((maybequoted(s)));
end;
end;
if (cs_link_on_target in aktglobalswitches) then
begin
LinkRes.Add(')');
{ 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;
end
else
begin
while not SharedLibFiles.Empty do
begin
S:=SharedLibFiles.GetFirst;
LinkRes.Add('lib'+s+target_info.staticlibext);
end;
LinkRes.Add(')');
end;
{ Write and Close response }
linkres.writetodisk;
linkres.free;
WriteResponseFile:=True;
end;
function TLinkerGba.MakeExecutable:boolean;
var
binstr : string;
cmdstr : TCmdStr;
success : boolean;
StripStr: string[40];
begin
//if not(cs_link_extern in aktglobalswitches) then
if not(cs_link_nolink in aktglobalswitches) then
Message1(exec_i_linking,current_module.exefilename^);
{ Write used files and libraries }
WriteResponseFile();
{ Call linker }
SplitBinCmd(Info.ExeCmd[1],binstr,cmdstr);
Replace(cmdstr,'$OPT',Info.ExtraOptions);
if not(cs_link_on_target in aktglobalswitches) then
begin
Replace(cmdstr,'$EXE',(maybequoted(ScriptFixFileName(current_module.exefilename^))));
Replace(cmdstr,'$RES',(maybequoted(ScriptFixFileName(outputexedir+Info.ResName))));
Replace(cmdstr,'$STRIP',StripStr);
end
else
begin
Replace(cmdstr,'$EXE',maybequoted(ScriptFixFileName(current_module.exefilename^)));
Replace(cmdstr,'$RES',maybequoted(ScriptFixFileName(outputexedir+Info.ResName)));
end;
success:=DoExec(FindUtil(BinStr),cmdstr,true,false);
{ Remove ReponseFile }
if (success) and not(cs_link_nolink in aktglobalswitches) then
RemoveFile(outputexedir+Info.ResName);
MakeExecutable:=success; { otherwise a recursive call to link method }
end;
{*****************************************************************************
Initialize
*****************************************************************************}
initialization
RegisterExternalLinker(system_arm_gba_info,TLinkerGba);
RegisterTarget(system_arm_gba_info);
end.
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