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150eda304b
(todo: at least solaris, maybe others)
* changed the "exports" section handling:
a) make everything private which is not exported (implemented for
darwin and linux)
b) for the exported symbols:
- functions/procedures
1) if no name or index is provided, and if the procedure has aliases
defined via the public/export directives, then export the default
mangled name and all defined aliases
2) otherwise if no name is specified (but there is an index) then
i) if the procedure is defined as cdecl/cppdecl/mwpascal, use the
appropriately mangled version of the function name
ii) otherwise export the name without any mangling(e.g. "exports
proc1" -> proc1 is the exported name)
- variables
1) if no name is provided and the variable was specified as cvar,
use the mangled name
2) otherwise if no name is provided, export the name without any
mangling
-> initialization/finalization of shared libraries under Linux works
again (mantis #7838)
-> sharing symbols between shared library and main program works
under Linux (mantis #9089)
git-svn-id: trunk@10551 -
224 lines
8.5 KiB
ObjectPascal
224 lines
8.5 KiB
ObjectPascal
{
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Copyright (c) 1998-2005 by Florian Klaempfl
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This unit handles the exports parsing
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit pexports;
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{$i fpcdefs.inc}
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interface
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{ reads an exports statement in a library }
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procedure read_exports;
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implementation
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uses
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{ common }
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cutils,
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{ global }
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globals,globtype,tokens,verbose,constexp,
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systems,
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ppu,fmodule,
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{ symtable }
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symconst,symbase,symdef,symtype,symsym,
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{ pass 1 }
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node,
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ncon,
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{ parser }
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scanner,
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pbase,pexpr,
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{ link }
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gendef,export
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;
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procedure read_exports;
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var
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orgs,
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DefString,
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InternalProcName : string;
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pd : tprocdef;
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pt : tnode;
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srsym : tsym;
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srsymtable : TSymtable;
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hpname : shortstring;
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index : longint;
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options : word;
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function IsGreater(hp1,hp2:texported_item):boolean;
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var
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i2 : boolean;
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begin
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i2:=(hp2.options and eo_index)<>0;
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if (hp1.options and eo_index)<>0 then
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begin
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if i2 then
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IsGreater:=hp1.index>hp2.index
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else
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IsGreater:=false;
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end
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else
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IsGreater:=i2;
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end;
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begin
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current_module.flags:=current_module.flags or uf_has_exports;
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DefString:='';
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InternalProcName:='';
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consume(_EXPORTS);
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repeat
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hpname:='';
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options:=0;
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index:=0;
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if token=_ID then
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begin
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consume_sym_orgid(srsym,srsymtable,orgs);
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{ orgpattern is still valid here }
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InternalProcName:='';
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case srsym.typ of
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staticvarsym :
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InternalProcName:=tstaticvarsym(srsym).mangledname;
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procsym :
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begin
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pd:=tprocdef(tprocsym(srsym).ProcdefList[0]);
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if (Tprocsym(srsym).ProcdefList.Count>1) or
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(po_kylixlocal in pd.procoptions) or
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((tf_need_export in target_info.flags) and
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not(po_exports in pd.procoptions)) then
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Message(parser_e_illegal_symbol_exported)
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else
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InternalProcName:=pd.mangledname;
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end;
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else
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Message(parser_e_illegal_symbol_exported)
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end;
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if InternalProcName<>'' then
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begin
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{ This is wrong if the first is not
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an underline }
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if InternalProcName[1]='_' then
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delete(InternalProcName,1,1)
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else if (target_info.system in [system_i386_win32,system_i386_wdosx,system_arm_wince,system_i386_wince]) and UseDeffileForExports then
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begin
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Message(parser_e_dlltool_unit_var_problem);
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Message(parser_e_dlltool_unit_var_problem2);
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end;
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if length(InternalProcName)<2 then
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Message(parser_e_procname_to_short_for_export);
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DefString:=srsym.realname+'='+InternalProcName;
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end;
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if try_to_consume(_INDEX) then
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begin
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pt:=comp_expr(true);
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if pt.nodetype=ordconstn then
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if (Tordconstnode(pt).value<int64(low(index))) or
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(Tordconstnode(pt).value>int64(high(index))) then
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begin
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index:=0;
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message(parser_e_range_check_error)
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end
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else
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index:=Tordconstnode(pt).value.svalue
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else
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begin
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index:=0;
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consume(_INTCONST);
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end;
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options:=options or eo_index;
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pt.free;
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if target_info.system in [system_i386_win32,system_i386_wdosx,system_arm_wince,system_i386_wince] then
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DefString:=srsym.realname+'='+InternalProcName+' @ '+tostr(index)
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else
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DefString:=srsym.realname+'='+InternalProcName; {Index ignored!}
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end;
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if try_to_consume(_NAME) then
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begin
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pt:=comp_expr(true);
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if pt.nodetype=stringconstn then
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hpname:=strpas(tstringconstnode(pt).value_str)
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else
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begin
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consume(_CSTRING);
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end;
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options:=options or eo_name;
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pt.free;
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DefString:=hpname+'='+InternalProcName;
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end;
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if try_to_consume(_RESIDENT) then
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begin
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options:=options or eo_resident;
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DefString:=srsym.realname+'='+InternalProcName;{Resident ignored!}
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end;
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if (DefString<>'') and UseDeffileForExports then
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DefFile.AddExport(DefString);
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if srsym.typ=procsym then
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begin
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{ if no specific name or index was given, then if }
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{ the procedure has aliases defined export those, }
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{ otherwise export the name as it appears in the }
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{ export section (it doesn't make sense to export }
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{ the generic mangled name, because the name of }
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{ the parent unit is used in that) }
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if ((options and (eo_name or eo_index))=0) and
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(tprocdef(tprocsym(srsym).procdeflist[0]).aliasnames.count>1) then
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exportallprocsymnames(tprocsym(srsym),options)
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else
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begin
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{ there's a name or an index -> export only one name }
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{ correct? Or can you export multiple names with the }
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{ same index? And/or should we also export the aliases }
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{ if a name is specified? (JM) }
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if ((options and eo_name)=0) then
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{ Use set mangled name in case of cdecl/cppdecl/mwpascal }
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{ if no name specified }
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if (tprocdef(tprocsym(srsym).procdeflist[0]).proccalloption in [pocall_cdecl,pocall_mwpascal]) then
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hpname:=target_info.cprefix+tprocsym(srsym).realname
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else if (tprocdef(tprocsym(srsym).procdeflist[0]).proccalloption in [pocall_cppdecl]) then
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hpname:=target_info.cprefix+tprocdef(tprocsym(srsym).procdeflist[0]).cplusplusmangledname
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else
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hpname:=orgs;
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exportprocsym(srsym,hpname,index,options);
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end
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end
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else
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begin
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if ((options and eo_name)=0) then
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{ for "cvar" }
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if (vo_has_mangledname in tstaticvarsym(srsym).varoptions) then
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hpname:=srsym.mangledname
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else
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hpname:=orgs;
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exportvarsym(srsym,hpname,index,options);
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end;
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end
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else
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consume(_ID);
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until not try_to_consume(_COMMA);
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consume(_SEMICOLON);
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if not DefFile.empty then
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DefFile.writefile;
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end;
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end.
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