{
$Id: t_nwm.pas,v 1.9 2003/11/11 16:46:40 marco Exp $
Copyright (c) 1998-2002 by Peter Vreman
This unit implements support import,export,link routines
for the (i386) Netware 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.
Currently generating NetWare-NLM's only work under Linux and win32.
(see http://home.arcor.de/armin.diehl/fpcnw for binutils working
with win32) while not included in fpc-releases.
The following compiler-swiches are supported for NetWare:
$DESCRIPTION : NLM-Description, will be displayed at load-time
$M : For Stack-Size, Heap-Size will be ignored
32K is the accepted minimum
$VERSION x.x.x : Sets Major, Minor and Revision
$SCREENNAME : Sets the ScreenName
$THREADNAME : Sets current threadname
Displaying copyright does not work with nlmconv from gnu bunutils
version less that 2.13
Additional parameters for the nlmvonv-inputfile can be passed with
-k, i.e. -kREENTRANT will add the option REENTRANT to the nlmconv
inputfile. A ; will be converted into a newline
Exports will be handled like in win32:
procedure bla;
begin
end;
exports foo name 'Bar';
The path to the import-Files must be specified by the library-path.
All external modules are defined as autoload. (Note: the import-files have
to be in unix-format for exe2nlm)
By default, the most import files are included in freepascal.
i.e. Procedure ConsolePrintf (p:pchar); cdecl; external 'clib.nlm';
sets IMPORT @clib.imp and MODULE clib.
Function simply defined as external work without generating autoload but
you will get a warnung from nlmconv.
If you dont have nlmconv, compile gnu-binutils with
./configure --enable-targets=i386-linux,i386-netware
make all
Debugging is possible with gdb and a converter from gdb to ndi available
at http://home.arcor.de/armin.diehl/gdbnw
A sample program:
Program Hello;
(*$DESCRIPTION HelloWorldNlm*)
(*$VERSION 1.2.3*)
(*$ScreenName Hello*)
(*$M 60000,60000*)
begin
writeLn ('hello world');
end.
compile with:
ppc386 -Tnetware hello
ToDo:
- No duplicate imports and autoloads
- libc support (needs new target)
****************************************************************************
}
unit t_nwm;
{$i fpcdefs.inc}
interface
implementation
uses
cutils,
verbose,systems,globtype,globals,
symconst,script,
fmodule,aasmbase,aasmtai,aasmcpu,cpubase,symsym,symdef,
import,export,link,i_nwm;
type
timportlibnetware=class(timportlib)
procedure preparelib(const s:string);override;
procedure importprocedure(aprocdef:tprocdef;const module:string;index:longint;const name:string);override;
procedure importvariable(vs:tvarsym;const name,module:string);override;
procedure generatelib;override;
end;
texportlibnetware=class(texportlib)
procedure preparelib(const s : string);override;
procedure exportprocedure(hp : texported_item);override;
procedure exportvar(hp : texported_item);override;
procedure generatelib;override;
end;
tlinkernetware=class(texternallinker)
private
NLMConvLinkFile: TLinkRes; {for second pass, fist pass is ld}
Function WriteResponseFile(isdll:boolean) : Boolean;
public
constructor Create;override;
procedure SetDefaultInfo;override;
function MakeExecutable:boolean;override;
end;
Const tmpLinkFileName = 'link~tmp._o_';
minStackSize = 32768;
{*****************************************************************************
TIMPORTLIBNETWARE
*****************************************************************************}
procedure timportlibnetware.preparelib(const s : string);
begin
end;
procedure timportlibnetware.importprocedure(aprocdef:tprocdef;const module:string;index:longint;const name:string);
begin
{ insert sharedlibrary }
current_module.linkothersharedlibs.add(SplitName(module),link_allways);
{ do nothing with the procedure, only set the mangledname }
if name<>'' then
begin
aprocdef.setmangledname(name);
end
else
message(parser_e_empty_import_name);
end;
procedure timportlibnetware.importvariable(vs:tvarsym;const name,module:string);
begin
{ insert sharedlibrary }
current_module.linkothersharedlibs.add(SplitName(module),link_allways);
{ reset the mangledname and turn off the dll_var option }
vs.set_mangledname(name);
exclude(vs.varoptions,vo_is_dll_var);
end;
procedure timportlibnetware.generatelib;
begin
end;
{*****************************************************************************
TEXPORTLIBNETWARE
*****************************************************************************}
procedure texportlibnetware.preparelib(const s:string);
begin
end;
procedure texportlibnetware.exportprocedure(hp : texported_item);
var
hp2 : texported_item;
begin
{ first test the index value }
if (hp.options and eo_index)<>0 then
begin
Comment(V_Error,'can''t export with index under netware');
exit;
end;
{ use pascal name is none specified }
if (hp.options and eo_name)=0 then
begin
hp.name:=stringdup(hp.sym.name);
hp.options:=hp.options or eo_name;
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.insert(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 texportlibnetware.exportvar(hp : texported_item);
begin
hp.is_var:=true;
exportprocedure(hp);
end;
procedure texportlibnetware.generatelib;
var
hp2 : texported_item;
begin
hp2:=texported_item(current_module._exports.first);
while assigned(hp2) do
begin
if (not hp2.is_var) and
(hp2.sym.typ=procsym) then
begin
{ the manglednames can already be the same when the procedure
is declared with cdecl }
if tprocsym(hp2.sym).first_procdef.mangledname<>hp2.name^ then
begin
{$ifdef i386}
{ place jump in codesegment }
codesegment.concat(Tai_align.Create_op(4,$90));
codeSegment.concat(Tai_symbol.Createname_global(hp2.name^,0));
codeSegment.concat(Taicpu.Op_sym(A_JMP,S_NO,objectlibrary.newasmsymbol(tprocsym(hp2.sym).first_procdef.mangledname)));
codeSegment.concat(Tai_symbol_end.Createname(hp2.name^));
{$endif i386}
end;
end
else
//Comment(V_Error,'Exporting of variables is not supported under netware');
Message1(parser_e_no_export_of_variables_for_target,'netware');
hp2:=texported_item(hp2.next);
end;
end;
{*****************************************************************************
TLINKERNETWARE
*****************************************************************************}
Constructor TLinkerNetware.Create;
begin
Inherited Create;
end;
procedure TLinkerNetware.SetDefaultInfo;
begin
with Info do
begin
ExeCmd[1]:= 'ld -Ur -T $RES $STRIP -o $TMPOBJ';
if source_info.system<>target_info.system Then
ExeCmd[2]:='nlmconv -m i386nw -T$RES'
else
ExeCmd[2]:='nlmconv -T$RES';
end;
end;
Function TLinkerNetware.WriteResponseFile(isdll:boolean) : Boolean;
Var
linkres : TLinkRes;
i : longint;
s,s2,s3 : string;
ProgNam : string [80];
NlmNam : string [80];
hp2 : texported_item; { for exports }
p : byte;
begin
WriteResponseFile:=False;
ProgNam := current_module.exefilename^;
i:=Pos(target_info.exeext,ProgNam);
if i>0 then
Delete(ProgNam,i,255);
NlmNam := ProgNam + target_info.exeext;
{ Open link.res file }
LinkRes:=TLinkRes.Create(outputexedir+Info.ResName); {for ld}
NLMConvLinkFile:=TLinkRes.Create(outputexedir+'n'+Info.ResName); {for nlmconv, written in CreateExeFile}
p := Pos ('"', Description);
while (p > 0) do
begin
delete (Description,p,1);
p := Pos ('"', Description);
end;
if Description <> '' then
NLMConvLinkFile.Add('DESCRIPTION "' + Description + '"');
NLMConvLinkFile.Add('VERSION '+tostr(dllmajor)+','+tostr(dllminor)+','+tostr(dllrevision));
p := Pos ('"', nwscreenname);
while (p > 0) do
begin
delete (nwscreenname,p,1);
p := Pos ('"', nwscreenname);
end;
p := Pos ('"', nwthreadname);
while (p > 0) do
begin
delete (nwthreadname,p,1);
p := Pos ('"', nwthreadname);
end;
p := Pos ('"', nwcopyright);
while (p > 0) do
begin
delete (nwcopyright,p,1);
p := Pos ('"', nwcopyright);
end;
if nwscreenname <> '' then
NLMConvLinkFile.Add('SCREENNAME "' + nwscreenname + '"');
if nwthreadname <> '' then
NLMConvLinkFile.Add('THREADNAME "' + nwthreadname + '"');
if nwcopyright <> '' then
NLMConvLinkFile.Add('COPYRIGHT "' + nwcopyright + '"');
if stacksize < minStackSize then stacksize := minStackSize;
str (stacksize, s);
NLMConvLinkFile.Add ('STACKSIZE '+s);
NLMConvLinkFile.Add ('INPUT '+tmpLinkFileName);
{ add objectfiles, start with nwpre always }
LinkRes.Add ('INPUT (');
s2 := FindObjectFile('nwpre','',false);
Comment (V_Debug,'adding Object File '+s2);
LinkRes.Add (s2);
{ main objectfiles, add to linker input }
while not ObjectFiles.Empty do
begin
s:=ObjectFiles.GetFirst;
if s<>'' then
begin
s2 := FindObjectFile (s,'',false);
Comment (V_Debug,'adding Object File '+s2);
LinkRes.Add (s2);
end;
end;
{ output file (nlm), add to nlmconv }
NLMConvLinkFile.Add ('OUTPUT ' + NlmNam);
{ start and stop-procedures }
NLMConvLinkFile.Add ('START _Prelude'); { defined in rtl/netware/nwpre.as }
NLMConvLinkFile.Add ('EXIT _Stop'); { nwpre.as }
NLMConvLinkFile.Add ('CHECK FPC_NW_CHECKFUNCTION'); { system.pp }
if not (cs_link_strip in aktglobalswitches) then
begin
NLMConvLinkFile.Add ('DEBUG');
Comment(V_Debug,'DEBUG');
end;
{ Write staticlibraries, is that correct ? }
if not StaticLibFiles.Empty then
begin
While not StaticLibFiles.Empty do
begin
S:=lower (StaticLibFiles.GetFirst);
if s<>'' then
begin
{ad: that's a hack !
whith -XX we get the .a files as static libs (in addition to the
imported libraries}
if (pos ('.a',s) <> 0) OR (pos ('.A', s) <> 0) then
begin
S2 := FindObjectFile(s,'',false);
LinkRes.Add (S2);
Comment(V_Debug,'adding Object File (StaticLibFiles) '+S2);
end else
begin
i:=Pos(target_info.staticlibext,S);
if i>0 then
Delete(S,i,255);
S := S + '.imp'; S2 := '';
librarysearchpath.FindFile(S,S2);
NLMConvLinkFile.Add('IMPORT @'+S2);
Comment(V_Debug,'IMPORT @'+s2);
end;
end
end;
end;
if not SharedLibFiles.Empty then
begin
While not SharedLibFiles.Empty do
begin
{becuase of upper/lower case mix, we may get duplicate
names but nlmconv ignores that.
Here we are setting the import-files for nlmconv. I.e. for
the module clib or clib.nlm we add IMPORT @clib.imp and also
the module clib.nlm (autoload)
? may it be better to set autoload's via StaticLibFiles ? }
S:=lower (SharedLibFiles.GetFirst);
if s<>'' then
begin
s2:=s;
i:=Pos(target_info.sharedlibext,S);
if i>0 then
Delete(S,i,255);
S := S + '.imp';
librarysearchpath.FindFile(S,S3);
NLMConvLinkFile.Add('IMPORT @'+S3);
NLMConvLinkFile.Add('MODULE '+s2);
Comment(V_Debug,'MODULE '+S2);
Comment(V_Debug,'IMPORT @'+S3);
end
end;
end;
{ write exports }
hp2:=texported_item(current_module._exports.first);
while assigned(hp2) do
begin
if not hp2.is_var then
begin
{ Export the Symbol }
Comment(V_Debug,'EXPORT '+hp2.name^);
NLMConvLinkFile.Add ('EXPORT '+hp2.name^);
end
else
{ really, i think it is possible }
Comment(V_Error,'Exporting of variables is not supported under netware');
hp2:=texported_item(hp2.next);
end;
{ Write and Close response for ld, response for nlmconv is in NLMConvLinkFile(not written) }
linkres.Add (')');
linkres.writetodisk;
LinkRes.Free;
{ pass options from -k to nlmconv, ; is interpreted as newline }
s := ParaLinkOptions;
while(Length(s) > 0) and (s[1] = ' ') do
delete (s,1,1);
p := pos ('"',s);
while p > 0 do
begin
delete (s,p,1);
p := pos ('"',s);
end;
p := pos (';',s);
while p > 0 do
begin
s2 := copy(s,1,p-1);
comment (V_Debug,'adding "'+s2+'" to nlmvonv input');
NLMConvLinkFile.Add(s2);
delete (s,1,p);
p := pos (';',s);
end;
if s <> '' then
begin
comment (V_Debug,'adding "'+s+'" to nlmvonv input');
NLMConvLinkFile.Add(s);
end;
WriteResponseFile:=True;
end;
function TLinkerNetware.MakeExecutable:boolean;
var
binstr,
cmdstr : string;
success : boolean;
StripStr : string[2];
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 and create Headerfile for
nlmconv in NLMConvLinkFile }
WriteResponseFile(false);
{ Call linker, this will generate a new object file that will be passed
to nlmconv. Otherwise we could not create nlms without debug info }
SplitBinCmd(Info.ExeCmd[1],binstr,cmdstr);
Replace(cmdstr,'$EXE',current_module.exefilename^);
Replace(cmdstr,'$RES',outputexedir+Info.ResName);
Replace(cmdstr,'$STRIP',StripStr);
Replace(cmdstr,'$TMPOBJ',outputexedir+tmpLinkFileName);
Comment (v_debug,'Executing '+BinStr+' '+cmdstr);
success:=DoExec(FindUtil(BinStr),CmdStr,true,false);
{ Remove ReponseFile }
if (success) and not(cs_link_extern in aktglobalswitches) then
RemoveFile(outputexedir+Info.ResName);
{ Call nlmconv }
if success then
begin
NLMConvLinkFile.writetodisk;
NLMConvLinkFile.Free;
SplitBinCmd(Info.ExeCmd[2],binstr,cmdstr);
Replace(cmdstr,'$RES',outputexedir+'n'+Info.ResName);
Comment (v_debug,'Executing '+BinStr+' '+cmdstr);
success:=DoExec(FindUtil(BinStr),CmdStr,true,false);
if (success) and not(cs_link_extern in aktglobalswitches) then
RemoveFile(outputexedir+'n'+Info.ResName);
{always remove the temp object file}
RemoveFile(outputexedir+tmpLinkFileName);
end;
MakeExecutable:=success; { otherwise a recursive call to link method }
end;
{*****************************************************************************
Initialize
*****************************************************************************}
initialization
RegisterExternalLinker(system_i386_netware_info,TLinkerNetware);
RegisterImport(system_i386_netware,TImportLibNetware);
RegisterExport(system_i386_netware,TExportLibNetware);
RegisterTarget(system_i386_netware_info);
end.
{
$Log: t_nwm.pas,v $
Revision 1.9 2003/11/11 16:46:40 marco
* minor fix
Revision 1.8 2003/04/27 07:29:52 peter
* aktprocdef cleanup, aktprocdef is now always nil when parsing
a new procdef declaration
* aktprocsym removed
* lexlevel removed, use symtable.symtablelevel instead
* implicit init/final code uses the normal genentry/genexit
* funcret state checking updated for new funcret handling
Revision 1.7 2003/04/26 09:16:08 peter
* .o files belonging to the unit are first searched in the same dir
as the .ppu
Revision 1.6 2003/03/22 14:51:27 armin
* support -k for additional nlmvonv headeroptions, -m i386nw for win32, support -sh
Revision 1.5 2003/03/21 22:36:42 armin
* changed linking: now we will link all objects to a single one and call nlmconv with that one object file. This makes it possible to create nlms without debug info.
Revision 1.4 2003/03/21 19:19:51 armin
* search of .imp files was broken, debug only if -gg was specified
Revision 1.3 2002/11/17 16:32:04 carl
* memory optimization (3-4%) : cleanup of tai fields,
cleanup of tdef and tsym fields.
* make it work for m68k
Revision 1.2 2002/09/09 17:34:17 peter
* tdicationary.replace added to replace and item in a dictionary. This
is only allowed for the same name
* varsyms are inserted in symtable before the types are parsed. This
fixes the long standing "var longint : longint" bug
- consume_idlist and idstringlist removed. The loops are inserted
at the callers place and uses the symtable for duplicate id checking
Revision 1.1 2002/09/06 15:03:50 carl
* moved files to systems directory
Revision 1.30 2002/09/03 16:26:29 daniel
* Make Tprocdef.defs protected
Revision 1.29 2002/08/12 15:08:44 carl
+ stab register indexes for powerpc (moved from gdb to cpubase)
+ tprocessor enumeration moved to cpuinfo
+ linker in target_info is now a class
* many many updates for m68k (will soon start to compile)
- removed some ifdef or correct them for correct cpu
Revision 1.28 2002/08/11 14:32:32 peter
* renamed current_library to objectlibrary
Revision 1.27 2002/08/11 13:24:20 peter
* saving of asmsymbols in ppu supported
* asmsymbollist global is removed and moved into a new class
tasmlibrarydata that will hold the info of a .a file which
corresponds with a single module. Added librarydata to tmodule
to keep the library info stored for the module. In the future the
objectfiles will also be stored to the tasmlibrarydata class
* all getlabel/newasmsymbol and friends are moved to the new class
Revision 1.26 2002/07/26 21:15:46 florian
* rewrote the system handling
Revision 1.25 2002/07/01 18:46:35 peter
* internal linker
* reorganized aasm layer
Revision 1.24 2002/05/18 13:34:27 peter
* readded missing revisions
Revision 1.23 2002/05/16 19:46:53 carl
+ defines.inc -> fpcdefs.inc to avoid conflicts if compiling by hand
+ try to fix temp allocation (still in ifdef)
+ generic constructor calls
+ start of tassembler / tmodulebase class cleanup
Revision 1.21 2002/04/22 18:19:22 carl
- remove use_bound_instruction field
Revision 1.20 2002/04/20 21:43:18 carl
* fix stack size for some targets
+ add offset to parameters from frame pointer info.
- remove some unused stuff
Revision 1.19 2002/04/19 15:46:05 peter
* mangledname rewrite, tprocdef.mangledname is now created dynamicly
in most cases and not written to the ppu
* add mangeledname_prefix() routine to generate the prefix of
manglednames depending on the current procedure, object and module
* removed static procprefix since the mangledname is now build only
on demand from tprocdef.mangledname
Revision 1.18 2002/04/15 19:16:57 carl
- remove size_of_pointer field
Revision 1.17 2002/03/30 09:09:47 armin
+ support check-function for netware
Revision 1.16 2002/03/29 17:19:51 armin
+ allow exports for netware
Revision 1.15 2002/03/19 20:23:57 armin
+ smart linking now works with netware
Revision 1.14 2002/03/04 17:54:59 peter
* allow oridinal labels again
Revision 1.13 2002/03/03 13:00:39 hajny
* importprocedure fix by Armin Diehl
}
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