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fpc/compiler/systems/t_aix.pas

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{
Copyright (c) 2011 by Jonas Maebe
This unit implements support import,export,link routines
for the AIX 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_aix;
{$i fpcdefs.inc}
interface
uses
aasmdata,
symsym,symdef,ppu,
import,export,expunix,link;
type
timportlibaix=class(timportlib)
procedure generatelib;override;
end;
texportlibaix=class(texportlibunix)
procedure setfininame(list: TAsmList; const s: string); override;
end;
TLinkerAIX=class(texternallinker)
private
prtobj : string[80];
assumebinutils,use_gld : boolean;
Function WriteResponseFile(isdll:boolean) : Boolean;
public
constructor Create;override;
procedure SetDefaultInfo;override;
function MakeExecutable:boolean;override;
function MakeSharedLibrary:boolean;override;
end;
implementation
uses
SysUtils,
cutils,cfileutl,cclasses,
verbose,systems,globtype,globals,
symconst,cscript,
fmodule,
aasmbase,aasmtai,aasmcpu,cpubase,
cgbase,cgobj,cgutils,ogbase,ncgutil,
comprsrc,
rescmn, i_aix
;
{*****************************************************************************
timportlibaix
*****************************************************************************}
procedure timportlibaix.generatelib;
var
i : longint;
ImportLibrary : TImportLibrary;
begin
for i:=0 to current_module.ImportLibraryList.Count-1 do
begin
ImportLibrary:=TImportLibrary(current_module.ImportLibraryList[i]);
current_module.linkothersharedlibs.add(ImportLibrary.Name,link_always);
end;
end;
{*****************************************************************************
texportlibaix
*****************************************************************************}
procedure texportlibaix.setfininame(list: TAsmList; const s: string);
begin
inherited setfininame(list,s);
end;
{*****************************************************************************
TLinkerAIX
*****************************************************************************}
Constructor TLinkerAIX.Create;
begin
Inherited Create;
if not Dontlinkstdlibpath then
if not(cs_profile in current_settings.moduleswitches) then
LibrarySearchPath.AddPath(sysrootpath,'/usr/lib;/usr/X11R6/lib;/opt/freeware/lib',true)
else
LibrarySearchPath.AddPath(sysrootpath,'/usr/lib/profiled;/usr/X11R6/lib;/opt/freeware/lib',true)
end;
procedure TLinkerAIX.SetDefaultInfo;
begin
with Info do
begin
{ the -bpT and -bpD options set the base addresses for text and data
sections. They are required because otherwise they are both 0 and hence
overlap, which confuses gdb. GCC uses those same options. -btextro makes
sure that the binary does not contain any relocations in the text
section (otherwise you get an error at load time instead of at link time
in case something is wrong) }
ExeCmd[1]:='$LDBIN -bpT:0x10000000 -bpD:0x20000000 -btextro $OPT $STRIP -L. -o $EXE $CATRES' {$ifdef powerpc64}+' -b64'{$endif};
DllCmd[1]:='$LDBIN -bpT:0x10000000 -bpD:0x20000000 -btextro $OPT $INITFINI $STRIP -G -L. -o $EXE $CATRES' {$ifdef powerpc64}+' -b64'{$endif};
if cs_debuginfo in current_settings.moduleswitches then
begin
{ debugging helpers }
ExeCmd[1]:=ExeCmd[1]+' -lg -bexport:/usr/lib/libg.exp';
DllCmd[1]:=DllCmd[1]+' -lg -bexport:/usr/lib/libg.exp';
end;
end;
{$if defined(powerpc)}
if not(cs_profile in current_settings.moduleswitches) then
prtobj:=sysrootpath+'/lib/crt0.o'
else
prtobj:=sysrootpath+'/lib/gcrt0.o';
{$elseif defined(powerpc64)}
if not(cs_profile in current_settings.moduleswitches) then
prtobj:=sysrootpath+'/lib/crt0_64.o'
else
prtobj:=sysrootpath+'/lib/gcrt0_64.o';
{$else}
{$error unsupported AIX architecture}
{$endif}
assumebinutils:=
not(cs_link_native in current_settings.globalswitches) or
(not(cs_link_on_target in current_settings.globalswitches) and
not(source_info.system in systems_aix)) ;
use_gld:=assumebinutils and (source_info.system in systems_aix)
end;
Function TLinkerAIX.WriteResponseFile(isdll:boolean) : Boolean;
Var
linkres : TLinkRes;
i : longint;
HPath : TCmdStrListItem;
s,s1 : TCmdStr;
begin
result:=False;
{ Open link.res file }
LinkRes:=TLinkRes.Create(outputexedir+Info.ResName,assumebinutils);
with linkres do
begin
{ Write path to search libraries }
HPath:=TCmdStrListItem(current_module.locallibrarysearchpath.First);
while assigned(HPath) do
begin
if assumebinutils then
Add('SEARCH_DIR("'+HPath.Str+'")')
else
Add('-L'+HPath.Str);
HPath:=TCmdStrListItem(HPath.Next);
end;
HPath:=TCmdStrListItem(LibrarySearchPath.First);
while assigned(HPath) do
begin
if assumebinutils then
Add('SEARCH_DIR("'+HPath.Str+'")')
else
Add('-L'+HPath.Str);
HPath:=TCmdStrListItem(HPath.Next);
end;
if assumebinutils then
StartSection('INPUT(');
{ add objectfiles, start with prt0 always }
if assumebinutils then
AddFileName(maybequoted(FindObjectFile(prtobj,'',false)))
else
AddFileName(FindObjectFile(prtobj,'',false));
{ main objectfiles }
while not ObjectFiles.Empty do
begin
s:=ObjectFiles.GetFirst;
if s<>'' then
if assumebinutils then
AddFileName(maybequoted(s))
else
AddFileName(s)
end;
{ Write staticlibraries }
if not StaticLibFiles.Empty then
begin
While not StaticLibFiles.Empty do
begin
S:=StaticLibFiles.GetFirst;
if assumebinutils then
AddFileName(maybequoted(s))
else
AddFileName(s);
end;
end;
{ Write sharedlibraries like -l<lib> }
While not SharedLibFiles.Empty do
begin
S:=SharedLibFiles.GetFirst;
i:=Pos(target_info.sharedlibext,S);
if i>0 then
Delete(S,i,255);
Add('-l'+s);
end;
{ when we have -static for the linker the we also need libgcc }
if (cs_link_staticflag in current_settings.globalswitches) then
begin
Add('-lgcc');
if librarysearchpath.FindFile('libgcc_eh.a',false,s1) then
Add('-lgcc_eh');
end;
if assumebinutils then
EndSection(')');
{ Write and Close response }
writetodisk;
Free;
end;
WriteResponseFile:=True;
end;
function TLinkerAIX.MakeExecutable:boolean;
var
linkscript: TAsmScript;
binstr,
cmdstr : TCmdStr;
success : boolean;
StripStr : string[40];
begin
if not(cs_link_nolink in current_settings.globalswitches) then
Message1(exec_i_linking,current_module.exefilename);
linkscript:=nil;
{ Create some replacements }
StripStr:='';
if (cs_link_strip in current_settings.globalswitches) and
not(cs_link_separate_dbg_file in current_settings.globalswitches) then
StripStr:='-s';
if (cs_link_map in current_settings.globalswitches) then
StripStr:='-bmap:'+maybequoted(ChangeFileExt(current_module.exefilename,'.map'));
{ Write used files and libraries }
WriteResponseFile(false);
{ Call linker }
SplitBinCmd(Info.ExeCmd[1],binstr,cmdstr);
if assumebinutils and (source_info.system in systems_aix) then
Replace(binstr,'$LDBIN','gld')
else
Replace(binstr,'$LDBIN','ld');
binstr:=FindUtil(utilsprefix+BinStr);
Replace(cmdstr,'$EXE',maybequoted(current_module.exefilename));
Replace(cmdstr,'$OPT',Info.ExtraOptions);
{ the native AIX linker does not support linkres files, so we need
CatFileContent(). The binutils cross-linker does support such files, so
use them when cross-compiling to avoid overflowing the Windows maximum
command line length
}
if not(cs_link_on_target in current_settings.globalswitches) and
not(source_info.system in systems_aix) then
Replace(cmdstr,'$CATRES',outputexedir+Info.ResName)
else
Replace(cmdstr,'$CATRES',CatFileContent(outputexedir+Info.ResName));
Replace(cmdstr,'$STRIP',StripStr);
{ create dynamic symbol table? }
if HasExports then
cmdstr:=cmdstr+' -E';
{ custom sysroot? (for cross-compiling -> assume gnu ld) }
if sysrootpath<>'' then
cmdstr:=cmdstr+' --sysroot='+sysrootpath;
if not(cs_link_nolink in current_settings.globalswitches) and
not(tf_no_backquote_support in source_info.flags) then
begin
{ we have to use a script to use the IFS hack }
linkscript:=GenerateScript(outputexedir+'ppaslink');
linkscript.AddLinkCommand(binstr,CmdStr,'');
// if (extdbgbinstr<>'') then
// linkscript.AddLinkCommand(extdbgbinstr,extdbgcmdstr,'');
linkscript.WriteToDisk;
BinStr:=linkscript.fn;
if not path_absolute(BinStr) then
if cs_link_on_target in current_settings.globalswitches then
BinStr:='.'+target_info.dirsep+BinStr
else
BinStr:='.'+source_info.dirsep+BinStr;
CmdStr:='';
end;
success:=DoExec(BinStr,cmdstr,true,true);
{ Remove ReponseFile }
if (success) and not(cs_link_nolink in current_settings.globalswitches) then
begin
DeleteFile(outputexedir+Info.ResName);
if assigned(linkscript) then
DeleteFile(linkscript.fn);
end;
linkscript.free;
MakeExecutable:=success; { otherwise a recursive call to link method }
end;
Function TLinkerAIX.MakeSharedLibrary:boolean;
const
{$ifdef cpu64bitaddr}
libobj = 'shr_64.o';
{$else}
libobj = 'shr.o';
{$endif}
var
linkscript : TAsmScript;
exportedsyms: text;
InitFiniStr : string[80];
StripStr,
binstr,
cmdstr,
libfn: TCmdStr;
success : boolean;
begin
MakeSharedLibrary:=false;
if not(cs_link_nolink in current_settings.globalswitches) then
Message1(exec_i_linking,current_module.sharedlibfilename);
{ Write used files and libraries }
WriteResponseFile(true);
{ Create some replacements }
InitFiniStr:='-binitfini:'+exportlib.initname+':'+exportlib.fininame;
Replace(InitFiniStr,'$','.');
if cs_link_strip in current_settings.globalswitches then
StripStr:='-s'
else
StripStr:='';
{ Call linker }
SplitBinCmd(Info.DllCmd[1],binstr,cmdstr);
if assumebinutils and (source_info.system in systems_aix) then
Replace(binstr,'$LDBIN','gld')
else
Replace(binstr,'$LDBIN','ld');
binstr:=FindUtil(utilsprefix+BinStr);
{ on AIX, shared libraries are special object files that are stored inside
an archive. In that archive, the 32 bit version of the library is called
shr.o and the 64 bit version shr_64.o }
Replace(cmdstr,'$EXE',maybequoted(libobj));
Replace(cmdstr,'$OPT',Info.ExtraOptions);
if not(cs_link_on_target in current_settings.globalswitches) and
not(source_info.system in systems_aix) then
Replace(cmdstr,'$CATRES',outputexedir+Info.ResName)
else
Replace(cmdstr,'$CATRES',CatFileContent(outputexedir+Info.ResName));
Replace(cmdstr,'$INITFINI',InitFiniStr);
Replace(cmdstr,'$STRIP',StripStr);
{ exported symbols }
if not texportlibunix(exportlib).exportedsymnames.empty then
begin
assign(exportedsyms,outputexedir+'linksyms.fpc');
rewrite(exportedsyms);
repeat
writeln(exportedsyms,texportlibunix(exportlib).exportedsymnames.getfirst);
until texportlibunix(exportlib).exportedsymnames.empty;
close(exportedsyms);
cmdstr:=cmdstr+' -bE:'+maybequoted(outputexedir)+'linksyms.fpc';
end;
libfn:=maybequoted(current_module.sharedlibfilename);
{ we have to use a script to use the IFS hack }
linkscript:=GenerateScript(outputexedir+'ppaslink');
linkscript.AddLinkCommand(binstr,CmdStr,'');
{ delete the target static library containing the dynamic object file in
case it already existed }
if FileExists(libfn,true) then
linkscript.AddDeleteCommand(libfn);
{ and create the new one }
linkscript.AddLinkCommand(FindUtil(utilsprefix+'ar'),' -X32_64 -q '+libfn+(' '+libobj),'');
linkscript.WriteToDisk;
BinStr:=linkscript.fn;
if not path_absolute(BinStr) then
if cs_link_on_target in current_settings.globalswitches then
BinStr:='.'+target_info.dirsep+BinStr
else
BinStr:='.'+source_info.dirsep+BinStr;
CmdStr:='';
success:=DoExec(BinStr,cmdstr,true,true);
{ Remove ReponseFile }
if (success) and not(cs_link_nolink in current_settings.globalswitches) then
begin
DeleteFile(libobj);
DeleteFile(outputexedir+Info.ResName);
DeleteFile(outputexedir+'linksyms.fpc');
DeleteFile(linkscript.fn);
end;
linkscript.free;
MakeSharedLibrary:=success; { otherwise a recursive call to link method }
end;
{*****************************************************************************
Initialize
*****************************************************************************}
initialization
RegisterLinker(ld_aix,TLinkerAIX);
{$ifdef powerpc}
RegisterImport(system_powerpc_aix,timportlibaix);
RegisterExport(system_powerpc_aix,texportlibaix);
RegisterTarget(system_powerpc_aix_info);
{$endif powerpc}
{$ifdef powerpc64}
RegisterImport(system_powerpc64_aix,timportlibaix);
RegisterExport(system_powerpc64_aix,texportlibaix);
RegisterTarget(system_powerpc64_aix_info);
{$endif powerpc64}
RegisterRes(res_xcoff_info,TWinLikeResourceFile);
end.
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