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be88cd47b2
svn+ssh://peter@www.freepascal.org/FPC/svn/fpc/branches/linker/compiler r3090 | peter | 2006-03-30 15:10:15 +0100 (Thu, 30 Mar 2006) | 2 lines * infrastructure for .vtable directives r3094 | peter | 2006-03-31 10:01:48 +0100 (Fri, 31 Mar 2006) | 2 lines * vtable directive fixes r3113 | peter | 2006-04-01 22:49:57 +0100 (Sat, 01 Apr 2006) | 2 lines * Smart VTable linking using Symbols git-svn-id: trunk@3115 -
1372 lines
54 KiB
ObjectPascal
1372 lines
54 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Florian Klaempfl
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Routines for the code generation of data structures
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like VMT, Messages, VTables, Interfaces descs
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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 nobj;
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{$i fpcdefs.inc}
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interface
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uses
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cutils,cclasses,
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globtype,
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symdef,symsym,
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aasmbase,aasmtai,aasmdata
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;
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type
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pprocdeftree = ^tprocdeftree;
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tprocdeftree = record
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data : tprocdef;
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nl : tasmlabel;
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l,r : pprocdeftree;
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end;
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pprocdefcoll = ^tprocdefcoll;
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tprocdefcoll = record
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data : tprocdef;
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hidden : boolean;
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visible : boolean;
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next : pprocdefcoll;
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end;
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pvmtentry = ^tvmtentry;
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tvmtentry = record
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speedvalue : cardinal;
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name : pstring;
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firstprocdef : pprocdefcoll;
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next : pvmtentry;
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end;
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tclassheader=class
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private
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_Class : tobjectdef;
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private
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{ message tables }
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root : pprocdeftree;
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procedure disposeprocdeftree(p : pprocdeftree);
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procedure insertmsgint(p : tnamedindexitem;arg:pointer);
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procedure insertmsgstr(p : tnamedindexitem;arg:pointer);
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procedure insertint(p : pprocdeftree;var at : pprocdeftree;var count:longint);
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procedure insertstr(p : pprocdeftree;var at : pprocdeftree;var count:longint);
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procedure writenames(p : pprocdeftree);
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procedure writeintentry(p : pprocdeftree);
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procedure writestrentry(p : pprocdeftree);
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{$ifdef WITHDMT}
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private
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{ dmt }
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procedure insertdmtentry(p : tnamedindexitem;arg:pointer);
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procedure writedmtindexentry(p : pprocdeftree);
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procedure writedmtaddressentry(p : pprocdeftree);
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{$endif}
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private
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{ published methods }
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procedure do_count_published_methods(p : tnamedindexitem;arg:pointer);
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procedure do_gen_published_methods(p : tnamedindexitem;arg:pointer);
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private
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{ vmt }
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firstvmtentry : pvmtentry;
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nextvirtnumber : integer;
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has_constructor,
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has_virtual_method : boolean;
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procedure newdefentry(vmtentry:pvmtentry;pd:tprocdef;is_visible:boolean);
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function newvmtentry(sym:tprocsym):pvmtentry;
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procedure eachsym(sym : tnamedindexitem;arg:pointer);
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procedure disposevmttree;
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procedure writevirtualmethods(List:TAsmList);
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private
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{ interface tables }
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function gintfgetvtbllabelname(intfindex: integer): string;
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procedure gintfcreatevtbl(intfindex: integer; rawdata: TAsmList);
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procedure gintfgenentry(intfindex, contintfindex: integer; rawdata: TAsmList);
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procedure gintfoptimizevtbls;
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procedure gintfwritedata;
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function gintfgetcprocdef(proc: tprocdef;const name: string): tprocdef;
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procedure gintfdoonintf(intf: tobjectdef; intfindex: longint);
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procedure gintfwalkdowninterface(intf: tobjectdef; intfindex: longint);
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public
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constructor create(c:tobjectdef);
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destructor destroy;override;
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{ generates the message tables for a class }
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function genstrmsgtab : tasmlabel;
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function genintmsgtab : tasmlabel;
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function genpublishedmethodstable : tasmlabel;
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{ generates a VMT entries }
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procedure genvmt;
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{$ifdef WITHDMT}
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{ generates a DMT for _class }
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function gendmt : tasmlabel;
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{$endif WITHDMT}
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{ interfaces }
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function genintftable: tasmlabel;
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{ write the VMT to al_globals }
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procedure writevmt;
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procedure writeinterfaceids;
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end;
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implementation
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uses
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strings,
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globals,verbose,systems,
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symtable,symconst,symtype,defcmp,defutil,
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dbgbase
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;
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{*****************************************************************************
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TClassHeader
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*****************************************************************************}
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constructor tclassheader.create(c:tobjectdef);
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begin
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inherited Create;
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_Class:=c;
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end;
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destructor tclassheader.destroy;
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begin
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disposevmttree;
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end;
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{**************************************
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Message Tables
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**************************************}
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procedure tclassheader.disposeprocdeftree(p : pprocdeftree);
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begin
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if assigned(p^.l) then
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disposeprocdeftree(p^.l);
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if assigned(p^.r) then
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disposeprocdeftree(p^.r);
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dispose(p);
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end;
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procedure tclassheader.insertint(p : pprocdeftree;var at : pprocdeftree;var count:longint);
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begin
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if at=nil then
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begin
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at:=p;
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inc(count);
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end
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else
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begin
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if p^.data.messageinf.i<at^.data.messageinf.i then
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insertint(p,at^.l,count)
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else if p^.data.messageinf.i>at^.data.messageinf.i then
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insertint(p,at^.r,count)
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else
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Message1(parser_e_duplicate_message_label,tostr(p^.data.messageinf.i));
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end;
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end;
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procedure tclassheader.insertstr(p : pprocdeftree;var at : pprocdeftree;var count:longint);
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var
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i : integer;
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begin
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if at=nil then
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begin
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at:=p;
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inc(count);
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end
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else
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begin
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i:=strcomp(p^.data.messageinf.str,at^.data.messageinf.str);
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if i<0 then
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insertstr(p,at^.l,count)
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else if i>0 then
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insertstr(p,at^.r,count)
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else
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Message1(parser_e_duplicate_message_label,strpas(p^.data.messageinf.str));
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end;
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end;
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procedure tclassheader.insertmsgint(p : tnamedindexitem;arg:pointer);
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var
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i : cardinal;
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def: Tprocdef;
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pt : pprocdeftree;
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begin
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if tsym(p).typ=procsym then
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for i:=1 to Tprocsym(p).procdef_count do
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begin
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def:=Tprocsym(p).procdef[i];
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if po_msgint in def.procoptions then
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begin
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new(pt);
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pt^.data:=def;
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pt^.l:=nil;
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pt^.r:=nil;
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insertint(pt,root,plongint(arg)^);
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end;
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end;
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end;
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procedure tclassheader.insertmsgstr(p : tnamedindexitem;arg:pointer);
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var
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i : cardinal;
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def: Tprocdef;
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pt : pprocdeftree;
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begin
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if tsym(p).typ=procsym then
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for i:=1 to Tprocsym(p).procdef_count do
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begin
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def:=Tprocsym(p).procdef[i];
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if po_msgstr in def.procoptions then
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begin
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new(pt);
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pt^.data:=def;
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pt^.l:=nil;
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pt^.r:=nil;
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insertstr(pt,root,plongint(arg)^);
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end;
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end;
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end;
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procedure tclassheader.writenames(p : pprocdeftree);
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var
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ca : pchar;
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len : longint;
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begin
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current_asmdata.getdatalabel(p^.nl);
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if assigned(p^.l) then
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writenames(p^.l);
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current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(aint))));
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current_asmdata.asmlists[al_globals].concat(Tai_label.Create(p^.nl));
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len:=strlen(p^.data.messageinf.str);
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current_asmdata.asmlists[al_globals].concat(tai_const.create_8bit(len));
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getmem(ca,len+1);
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move(p^.data.messageinf.str^,ca^,len+1);
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current_asmdata.asmlists[al_globals].concat(Tai_string.Create_pchar(ca,len));
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if assigned(p^.r) then
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writenames(p^.r);
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end;
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procedure tclassheader.writestrentry(p : pprocdeftree);
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begin
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if assigned(p^.l) then
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writestrentry(p^.l);
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{ write name label }
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current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(p^.nl));
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current_asmdata.asmlists[al_globals].concat(Tai_const.Createname(p^.data.mangledname,0));
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if assigned(p^.r) then
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writestrentry(p^.r);
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end;
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function tclassheader.genstrmsgtab : tasmlabel;
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var
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r : tasmlabel;
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count : aint;
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begin
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root:=nil;
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count:=0;
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{ insert all message handlers into a tree, sorted by name }
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_class.symtable.foreach(@insertmsgstr,@count);
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{ write all names }
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if assigned(root) then
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writenames(root);
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{ now start writing of the message string table }
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current_asmdata.getdatalabel(r);
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current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(aint))));
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current_asmdata.asmlists[al_globals].concat(Tai_label.Create(r));
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genstrmsgtab:=r;
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current_asmdata.asmlists[al_globals].concat(Tai_const.Create_aint(count));
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if assigned(root) then
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begin
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writestrentry(root);
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disposeprocdeftree(root);
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end;
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end;
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procedure tclassheader.writeintentry(p : pprocdeftree);
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begin
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if assigned(p^.l) then
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writeintentry(p^.l);
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{ write name label }
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current_asmdata.asmlists[al_globals].concat(Tai_const.Create_32bit(p^.data.messageinf.i));
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current_asmdata.asmlists[al_globals].concat(Tai_const.Createname(p^.data.mangledname,0));
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if assigned(p^.r) then
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writeintentry(p^.r);
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end;
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function tclassheader.genintmsgtab : tasmlabel;
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var
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r : tasmlabel;
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count : longint;
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begin
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root:=nil;
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count:=0;
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{ insert all message handlers into a tree, sorted by name }
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_class.symtable.foreach(@insertmsgint,@count);
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{ now start writing of the message string table }
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current_asmdata.getdatalabel(r);
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current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(aint))));
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current_asmdata.asmlists[al_globals].concat(Tai_label.Create(r));
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genintmsgtab:=r;
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current_asmdata.asmlists[al_globals].concat(Tai_const.Create_32bit(count));
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if assigned(root) then
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begin
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writeintentry(root);
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disposeprocdeftree(root);
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end;
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end;
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{$ifdef WITHDMT}
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{**************************************
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DMT
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**************************************}
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procedure tclassheader.insertdmtentry(p : tnamedindexitem;arg:pointer);
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var
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hp : tprocdef;
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pt : pprocdeftree;
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begin
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if tsym(p).typ=procsym then
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begin
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hp:=tprocsym(p).definition;
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while assigned(hp) do
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begin
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if (po_msgint in hp.procoptions) then
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begin
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new(pt);
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pt^.p:=hp;
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pt^.l:=nil;
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pt^.r:=nil;
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insertint(pt,root);
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end;
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hp:=hp.nextoverloaded;
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end;
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end;
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end;
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procedure tclassheader.writedmtindexentry(p : pprocdeftree);
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begin
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if assigned(p^.l) then
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writedmtindexentry(p^.l);
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al_globals.concat(Tai_const.Create_32bit(p^.data.messageinf.i));
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if assigned(p^.r) then
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writedmtindexentry(p^.r);
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end;
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procedure tclassheader.writedmtaddressentry(p : pprocdeftree);
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begin
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if assigned(p^.l) then
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writedmtaddressentry(p^.l);
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al_globals.concat(Tai_const_symbol.Createname(p^.data.mangledname,0));
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if assigned(p^.r) then
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writedmtaddressentry(p^.r);
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end;
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function tclassheader.gendmt : tasmlabel;
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var
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r : tasmlabel;
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begin
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root:=nil;
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count:=0;
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gendmt:=nil;
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{ insert all message handlers into a tree, sorted by number }
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_class.symtable.foreach(insertdmtentry);
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if count>0 then
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begin
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current_asmdata.getdatalabel(r);
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gendmt:=r;
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al_globals.concat(cai_align.create(const_align(sizeof(aint))));
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al_globals.concat(Tai_label.Create(r));
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{ entries for caching }
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al_globals.concat(Tai_const.Create_ptr(0));
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al_globals.concat(Tai_const.Create_ptr(0));
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al_globals.concat(Tai_const.Create_32bit(count));
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if assigned(root) then
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begin
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writedmtindexentry(root);
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writedmtaddressentry(root);
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disposeprocdeftree(root);
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end;
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end;
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end;
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{$endif WITHDMT}
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{**************************************
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Published Methods
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**************************************}
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procedure tclassheader.do_count_published_methods(p : tnamedindexitem;arg:pointer);
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var
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i : longint;
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pd : tprocdef;
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begin
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if (tsym(p).typ=procsym) then
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begin
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for i:=1 to tprocsym(p).procdef_count do
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begin
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pd:=tprocsym(p).procdef[i];
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if (pd.procsym=tsym(p)) and
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(sp_published in pd.symoptions) then
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inc(plongint(arg)^);
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end;
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end;
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end;
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procedure tclassheader.do_gen_published_methods(p : tnamedindexitem;arg:pointer);
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var
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i : longint;
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l : tasmlabel;
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pd : tprocdef;
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begin
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if (tsym(p).typ=procsym) then
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begin
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for i:=1 to tprocsym(p).procdef_count do
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begin
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pd:=tprocsym(p).procdef[i];
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if (pd.procsym=tsym(p)) and
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(sp_published in pd.symoptions) then
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begin
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current_asmdata.getdatalabel(l);
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current_asmdata.asmlists[al_typedconsts].concat(cai_align.create(const_align(sizeof(aint))));
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current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(l));
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current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_8bit(length(tsym(p).realname)));
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current_asmdata.asmlists[al_typedconsts].concat(Tai_string.Create(tsym(p).realname));
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current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(l));
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if po_abstractmethod in pd.procoptions then
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current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil))
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else
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current_asmdata.asmlists[al_globals].concat(Tai_const.Createname(pd.mangledname,0));
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end;
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end;
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end;
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end;
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|
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function tclassheader.genpublishedmethodstable : tasmlabel;
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var
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l : tasmlabel;
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count : longint;
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begin
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count:=0;
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_class.symtable.foreach(@do_count_published_methods,@count);
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if count>0 then
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begin
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current_asmdata.getdatalabel(l);
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current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(aint))));
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current_asmdata.asmlists[al_globals].concat(Tai_label.Create(l));
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current_asmdata.asmlists[al_globals].concat(Tai_const.Create_32bit(count));
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_class.symtable.foreach(@do_gen_published_methods,nil);
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genpublishedmethodstable:=l;
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end
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else
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genpublishedmethodstable:=nil;
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end;
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|
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{**************************************
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VMT
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**************************************}
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procedure tclassheader.newdefentry(vmtentry:pvmtentry;pd:tprocdef;is_visible:boolean);
|
|
var
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procdefcoll : pprocdefcoll;
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begin
|
|
if (_class=pd._class) then
|
|
begin
|
|
{ new entry is needed, override was not possible }
|
|
if (po_overridingmethod in pd.procoptions) then
|
|
MessagePos1(pd.fileinfo,parser_e_nothing_to_be_overridden,pd.fullprocname(false));
|
|
|
|
{ check that all methods have overload directive }
|
|
if not(m_fpc in aktmodeswitches) then
|
|
begin
|
|
procdefcoll:=vmtentry^.firstprocdef;
|
|
while assigned(procdefcoll) do
|
|
begin
|
|
if (procdefcoll^.data._class=pd._class) and
|
|
((po_overload in pd.procoptions)<>(po_overload in procdefcoll^.data.procoptions)) then
|
|
begin
|
|
MessagePos1(pd.fileinfo,parser_e_no_overload_for_all_procs,pd.procsym.realname);
|
|
{ recover }
|
|
include(procdefcoll^.data.procoptions,po_overload);
|
|
include(pd.procoptions,po_overload);
|
|
end;
|
|
procdefcoll:=procdefcoll^.next;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
{ generate new entry }
|
|
new(procdefcoll);
|
|
procdefcoll^.data:=pd;
|
|
procdefcoll^.hidden:=false;
|
|
procdefcoll^.visible:=is_visible;
|
|
procdefcoll^.next:=vmtentry^.firstprocdef;
|
|
vmtentry^.firstprocdef:=procdefcoll;
|
|
|
|
{ give virtual method a number }
|
|
if (po_virtualmethod in pd.procoptions) then
|
|
begin
|
|
pd.extnumber:=nextvirtnumber;
|
|
inc(nextvirtnumber);
|
|
has_virtual_method:=true;
|
|
end;
|
|
|
|
if (pd.proctypeoption=potype_constructor) then
|
|
has_constructor:=true;
|
|
end;
|
|
|
|
|
|
function tclassheader.newvmtentry(sym:tprocsym):pvmtentry;
|
|
begin
|
|
{ generate new vmtentry }
|
|
new(result);
|
|
result^.speedvalue:=sym.speedvalue;
|
|
result^.name:=stringdup(sym.name);
|
|
result^.next:=firstvmtentry;
|
|
result^.firstprocdef:=nil;
|
|
firstvmtentry:=result;
|
|
end;
|
|
|
|
|
|
procedure tclassheader.eachsym(sym : tnamedindexitem;arg:pointer);
|
|
const
|
|
po_comp = [po_classmethod,po_virtualmethod,po_staticmethod,po_interrupt,po_iocheck,po_msgstr,po_msgint,
|
|
po_exports,po_varargs,po_explicitparaloc,po_nostackframe];
|
|
label
|
|
handlenextdef;
|
|
var
|
|
pd : tprocdef;
|
|
i : cardinal;
|
|
is_visible,
|
|
hasoverloads,
|
|
pdoverload : boolean;
|
|
procdefcoll : pprocdefcoll;
|
|
vmtentry : pvmtentry;
|
|
_name : string;
|
|
_speed : cardinal;
|
|
begin
|
|
if (tsym(sym).typ<>procsym) then
|
|
exit;
|
|
|
|
{ check the current list of symbols }
|
|
_name:=sym.name;
|
|
_speed:=sym.speedvalue;
|
|
vmtentry:=firstvmtentry;
|
|
while assigned(vmtentry) do
|
|
begin
|
|
{ does the symbol already exist in the list? First
|
|
compare speedvalue before doing the string compare to
|
|
speed it up a little }
|
|
if (_speed=vmtentry^.speedvalue) and
|
|
(_name=vmtentry^.name^) then
|
|
begin
|
|
hasoverloads:=(Tprocsym(sym).procdef_count>1);
|
|
{ walk through all defs of the symbol }
|
|
for i:=1 to Tprocsym(sym).procdef_count do
|
|
begin
|
|
pd:=Tprocsym(sym).procdef[i];
|
|
|
|
{ is this procdef visible from the class that we are
|
|
generating. This will be used to hide the other procdefs.
|
|
When the symbol is not visible we don't hide the other
|
|
procdefs, because they can be reused in the next class.
|
|
The check to skip the invisible methods that are in the
|
|
list is futher down in the code }
|
|
is_visible:=pd.is_visible_for_object(_class);
|
|
|
|
if pd.procsym=sym then
|
|
begin
|
|
pdoverload:=(po_overload in pd.procoptions);
|
|
|
|
{ compare with all stored definitions }
|
|
procdefcoll:=vmtentry^.firstprocdef;
|
|
while assigned(procdefcoll) do
|
|
begin
|
|
{ compare only if the definition is not hidden }
|
|
if not procdefcoll^.hidden then
|
|
begin
|
|
{ check if one of the two methods has virtual }
|
|
if (po_virtualmethod in procdefcoll^.data.procoptions) or
|
|
(po_virtualmethod in pd.procoptions) then
|
|
begin
|
|
{ if the current definition has no virtual then hide the
|
|
old virtual if the new definition has the same arguments or
|
|
when it has no overload directive and no overloads }
|
|
if not(po_virtualmethod in pd.procoptions) then
|
|
begin
|
|
if procdefcoll^.visible and
|
|
(not(pdoverload or hasoverloads) or
|
|
(compare_paras(procdefcoll^.data.paras,pd.paras,cp_all,[])>=te_equal)) then
|
|
begin
|
|
if is_visible then
|
|
procdefcoll^.hidden:=true;
|
|
if (_class=pd._class) and not(po_reintroduce in pd.procoptions) then
|
|
MessagePos1(pd.fileinfo,parser_w_should_use_override,pd.fullprocname(false));
|
|
end;
|
|
end
|
|
{ if both are virtual we check the header }
|
|
else if (po_virtualmethod in pd.procoptions) and
|
|
(po_virtualmethod in procdefcoll^.data.procoptions) then
|
|
begin
|
|
{ new one has not override }
|
|
if is_class(_class) and
|
|
not(po_overridingmethod in pd.procoptions) then
|
|
begin
|
|
{ we start a new virtual tree, hide the old }
|
|
if (not(pdoverload or hasoverloads) or
|
|
(compare_paras(procdefcoll^.data.paras,pd.paras,cp_all,[])>=te_equal)) and
|
|
(procdefcoll^.visible) then
|
|
begin
|
|
if is_visible then
|
|
procdefcoll^.hidden:=true;
|
|
if (_class=pd._class) and not(po_reintroduce in pd.procoptions) then
|
|
MessagePos1(pd.fileinfo,parser_w_should_use_override,pd.fullprocname(false));
|
|
end;
|
|
end
|
|
{ same parameters }
|
|
else if (compare_paras(procdefcoll^.data.paras,pd.paras,cp_all,[])>=te_equal) then
|
|
begin
|
|
{ overload is inherited }
|
|
if (po_overload in procdefcoll^.data.procoptions) then
|
|
include(pd.procoptions,po_overload);
|
|
|
|
{ inherite calling convention when it was force and the
|
|
current definition has none force }
|
|
if (po_hascallingconvention in procdefcoll^.data.procoptions) and
|
|
not(po_hascallingconvention in pd.procoptions) then
|
|
begin
|
|
pd.proccalloption:=procdefcoll^.data.proccalloption;
|
|
include(pd.procoptions,po_hascallingconvention);
|
|
end;
|
|
|
|
{ the flags have to match except abstract and override }
|
|
{ only if both are virtual !! }
|
|
if (procdefcoll^.data.proccalloption<>pd.proccalloption) or
|
|
(procdefcoll^.data.proctypeoption<>pd.proctypeoption) or
|
|
((procdefcoll^.data.procoptions*po_comp)<>(pd.procoptions*po_comp)) then
|
|
begin
|
|
MessagePos1(pd.fileinfo,parser_e_header_dont_match_forward,pd.fullprocname(false));
|
|
tprocsym(procdefcoll^.data.procsym).write_parameter_lists(pd);
|
|
end;
|
|
|
|
{ error, if the return types aren't equal }
|
|
if not(equal_defs(procdefcoll^.data.rettype.def,pd.rettype.def)) and
|
|
not((procdefcoll^.data.rettype.def.deftype=objectdef) and
|
|
(pd.rettype.def.deftype=objectdef) and
|
|
is_class_or_interface(procdefcoll^.data.rettype.def) and
|
|
is_class_or_interface(pd.rettype.def) and
|
|
(tobjectdef(pd.rettype.def).is_related(
|
|
tobjectdef(procdefcoll^.data.rettype.def)))) then
|
|
begin
|
|
if not((m_delphi in aktmodeswitches) and
|
|
is_interface(_class)) then
|
|
Message2(parser_e_overridden_methods_not_same_ret,pd.fullprocname(false),
|
|
procdefcoll^.data.fullprocname(false))
|
|
else
|
|
{ Delphi allows changing the result type }
|
|
{ of interface methods from anything to }
|
|
{ anything (JM) }
|
|
Message2(parser_w_overridden_methods_not_same_ret,pd.fullprocname(false),
|
|
procdefcoll^.data.fullprocname(false));
|
|
end;
|
|
{ check if the method to override is visible, check is only needed
|
|
for the current parsed class. Parent classes are already validated and
|
|
need to include all virtual methods including the ones not visible in the
|
|
current class }
|
|
if (_class=pd._class) and
|
|
(po_overridingmethod in pd.procoptions) and
|
|
(not procdefcoll^.visible) then
|
|
MessagePos1(pd.fileinfo,parser_e_nothing_to_be_overridden,pd.fullprocname(false));
|
|
|
|
{ override old virtual method in VMT }
|
|
pd.extnumber:=procdefcoll^.data.extnumber;
|
|
procdefcoll^.data:=pd;
|
|
if is_visible then
|
|
procdefcoll^.visible:=true;
|
|
|
|
goto handlenextdef;
|
|
end
|
|
{ different parameters }
|
|
else
|
|
begin
|
|
{ when we got an override directive then can search futher for
|
|
the procedure to override.
|
|
If we are starting a new virtual tree then hide the old tree }
|
|
if not(po_overridingmethod in pd.procoptions) and
|
|
not pdoverload then
|
|
begin
|
|
if is_visible then
|
|
procdefcoll^.hidden:=true;
|
|
if (_class=pd._class) and not(po_reintroduce in pd.procoptions) then
|
|
MessagePos1(pd.fileinfo,parser_w_should_use_override,pd.fullprocname(false));
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
{ the new definition is virtual and the old static, we hide the old one
|
|
if the new defintion has not the overload directive }
|
|
if is_visible and
|
|
((not(pdoverload or hasoverloads)) or
|
|
(compare_paras(procdefcoll^.data.paras,pd.paras,cp_all,[])>=te_equal)) then
|
|
procdefcoll^.hidden:=true;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
{ both are static, we hide the old one if the new defintion
|
|
has not the overload directive }
|
|
if is_visible and
|
|
((not pdoverload) or
|
|
(compare_paras(procdefcoll^.data.paras,pd.paras,cp_all,[])>=te_equal)) then
|
|
procdefcoll^.hidden:=true;
|
|
end;
|
|
end; { not hidden }
|
|
procdefcoll:=procdefcoll^.next;
|
|
end;
|
|
|
|
{ if it isn't saved in the list we create a new entry }
|
|
newdefentry(vmtentry,pd,is_visible);
|
|
end;
|
|
handlenextdef:
|
|
end;
|
|
exit;
|
|
end;
|
|
vmtentry:=vmtentry^.next;
|
|
end;
|
|
|
|
{ Generate new procsym entry in vmt }
|
|
vmtentry:=newvmtentry(tprocsym(sym));
|
|
|
|
{ Add procdefs }
|
|
for i:=1 to Tprocsym(sym).procdef_count do
|
|
begin
|
|
pd:=Tprocsym(sym).procdef[i];
|
|
newdefentry(vmtentry,pd,pd.is_visible_for_object(_class));
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tclassheader.disposevmttree;
|
|
var
|
|
vmtentry : pvmtentry;
|
|
procdefcoll : pprocdefcoll;
|
|
begin
|
|
{ disposes the above generated tree }
|
|
vmtentry:=firstvmtentry;
|
|
while assigned(vmtentry) do
|
|
begin
|
|
firstvmtentry:=vmtentry^.next;
|
|
stringdispose(vmtentry^.name);
|
|
procdefcoll:=vmtentry^.firstprocdef;
|
|
while assigned(procdefcoll) do
|
|
begin
|
|
vmtentry^.firstprocdef:=procdefcoll^.next;
|
|
dispose(procdefcoll);
|
|
procdefcoll:=vmtentry^.firstprocdef;
|
|
end;
|
|
dispose(vmtentry);
|
|
vmtentry:=firstvmtentry;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tclassheader.genvmt;
|
|
|
|
procedure do_genvmt(p : tobjectdef);
|
|
|
|
begin
|
|
{ start with the base class }
|
|
if assigned(p.childof) then
|
|
do_genvmt(p.childof);
|
|
|
|
{ walk through all public syms }
|
|
p.symtable.foreach(@eachsym,nil);
|
|
end;
|
|
|
|
begin
|
|
firstvmtentry:=nil;
|
|
nextvirtnumber:=0;
|
|
|
|
has_constructor:=false;
|
|
has_virtual_method:=false;
|
|
|
|
{ generates a tree of all used methods }
|
|
do_genvmt(_class);
|
|
|
|
if not(is_interface(_class)) and
|
|
has_virtual_method and
|
|
not(has_constructor) then
|
|
Message1(parser_w_virtual_without_constructor,_class.objrealname^);
|
|
end;
|
|
|
|
|
|
{**************************************
|
|
Interface tables
|
|
**************************************}
|
|
|
|
function tclassheader.gintfgetvtbllabelname(intfindex: integer): string;
|
|
begin
|
|
gintfgetvtbllabelname:=make_mangledname('VTBL',_class.owner,_class.objname^+
|
|
'_$_'+_class.implementedinterfaces.interfaces(intfindex).objname^);
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfcreatevtbl(intfindex: integer; rawdata: TAsmList);
|
|
var
|
|
implintf: timplementedinterfaces;
|
|
curintf: tobjectdef;
|
|
proccount: integer;
|
|
tmps: string;
|
|
i: longint;
|
|
begin
|
|
implintf:=_class.implementedinterfaces;
|
|
curintf:=implintf.interfaces(intfindex);
|
|
|
|
section_symbol_start(rawdata,gintfgetvtbllabelname(intfindex),AT_DATA,true,sec_data,const_align(sizeof(aint)));
|
|
proccount:=implintf.implproccount(intfindex);
|
|
for i:=1 to proccount do
|
|
begin
|
|
tmps:=make_mangledname('WRPR',_class.owner,_class.objname^+'_$_'+curintf.objname^+'_$_'+
|
|
tostr(i)+'_$_'+
|
|
implintf.implprocs(intfindex,i).mangledname);
|
|
{ create reference }
|
|
rawdata.concat(Tai_const.Createname(tmps,0));
|
|
end;
|
|
section_symbol_end(rawdata,gintfgetvtbllabelname(intfindex));
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfgenentry(intfindex, contintfindex: integer; rawdata: TAsmList);
|
|
var
|
|
implintf: timplementedinterfaces;
|
|
curintf: tobjectdef;
|
|
tmplabel: tasmlabel;
|
|
i: longint;
|
|
begin
|
|
implintf:=_class.implementedinterfaces;
|
|
curintf:=implintf.interfaces(intfindex);
|
|
{ GUID }
|
|
if curintf.objecttype in [odt_interfacecom] then
|
|
begin
|
|
{ label for GUID }
|
|
current_asmdata.getdatalabel(tmplabel);
|
|
rawdata.concat(cai_align.create(const_align(sizeof(aint))));
|
|
rawdata.concat(Tai_label.Create(tmplabel));
|
|
rawdata.concat(Tai_const.Create_32bit(longint(curintf.iidguid^.D1)));
|
|
rawdata.concat(Tai_const.Create_16bit(curintf.iidguid^.D2));
|
|
rawdata.concat(Tai_const.Create_16bit(curintf.iidguid^.D3));
|
|
for i:=Low(curintf.iidguid^.D4) to High(curintf.iidguid^.D4) do
|
|
rawdata.concat(Tai_const.Create_8bit(curintf.iidguid^.D4[i]));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(tmplabel));
|
|
end
|
|
else
|
|
begin
|
|
{ nil for Corba interfaces }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil));
|
|
end;
|
|
{ VTable }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Createname(gintfgetvtbllabelname(contintfindex),0));
|
|
{ IOffset field }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_aint(implintf.ioffsets(contintfindex)));
|
|
{ IIDStr }
|
|
current_asmdata.getdatalabel(tmplabel);
|
|
rawdata.concat(cai_align.create(const_align(sizeof(aint))));
|
|
rawdata.concat(Tai_label.Create(tmplabel));
|
|
rawdata.concat(Tai_const.Create_8bit(length(curintf.iidstr^)));
|
|
if curintf.objecttype=odt_interfacecom then
|
|
rawdata.concat(Tai_string.Create(upper(curintf.iidstr^)))
|
|
else
|
|
rawdata.concat(Tai_string.Create(curintf.iidstr^));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(tmplabel));
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfoptimizevtbls;
|
|
type
|
|
tcompintfentry = record
|
|
weight: longint;
|
|
compintf: longint;
|
|
end;
|
|
{ Max 1000 interface in the class header interfaces it's enough imho }
|
|
tcompintfs = array[1..1000] of tcompintfentry;
|
|
pcompintfs = ^tcompintfs;
|
|
tequals = array[1..1000] of longint;
|
|
pequals = ^tequals;
|
|
timpls = array[1..1000] of longint;
|
|
pimpls = ^timpls;
|
|
var
|
|
max: longint;
|
|
equals: pequals;
|
|
compats: pcompintfs;
|
|
impls: pimpls;
|
|
w,i,j,k: longint;
|
|
cij: boolean;
|
|
cji: boolean;
|
|
begin
|
|
max:=_class.implementedinterfaces.count;
|
|
if max>High(tequals) then
|
|
Internalerror(200006135);
|
|
getmem(compats,sizeof(tcompintfentry)*max);
|
|
getmem(equals,sizeof(longint)*max);
|
|
getmem(impls,sizeof(longint)*max);
|
|
fillchar(compats^,sizeof(tcompintfentry)*max,0);
|
|
fillchar(equals^,sizeof(longint)*max,0);
|
|
fillchar(impls^,sizeof(longint)*max,0);
|
|
{ ismergepossible is a containing relation
|
|
meaning of ismergepossible(a,b,w) =
|
|
if implementorfunction map of a is contained implementorfunction map of b
|
|
imp(a,b) and imp(b,c) => imp(a,c) ; imp(a,b) and imp(b,a) => a == b
|
|
}
|
|
{ the order is very important for correct allocation }
|
|
for i:=1 to max do
|
|
begin
|
|
for j:=i+1 to max do
|
|
begin
|
|
cij:=_class.implementedinterfaces.isimplmergepossible(i,j,w);
|
|
cji:=_class.implementedinterfaces.isimplmergepossible(j,i,w);
|
|
if cij and cji then { i equal j }
|
|
begin
|
|
{ get minimum index of equal }
|
|
if equals^[j]=0 then
|
|
equals^[j]:=i;
|
|
end
|
|
else if cij then
|
|
begin
|
|
{ get minimum index of maximum weight }
|
|
if compats^[i].weight<w then
|
|
begin
|
|
compats^[i].weight:=w;
|
|
compats^[i].compintf:=j;
|
|
end;
|
|
end
|
|
else if cji then
|
|
begin
|
|
{ get minimum index of maximum weight }
|
|
if (compats^[j].weight<w) then
|
|
begin
|
|
compats^[j].weight:=w;
|
|
compats^[j].compintf:=i;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
{ Reset, no replacements by default }
|
|
for i:=1 to max do
|
|
impls^[i]:=i;
|
|
{ Replace vtbls when equal or compat, repeat
|
|
until there are no replacements possible anymore. This is
|
|
needed for the cases like:
|
|
First loop: 2->3, 3->1
|
|
Second loop: 2->1 (because 3 was replaced with 1)
|
|
}
|
|
repeat
|
|
k:=0;
|
|
for i:=1 to max do
|
|
begin
|
|
if compats^[impls^[i]].compintf<>0 then
|
|
impls^[i]:=compats^[impls^[i]].compintf
|
|
else if equals^[impls^[i]]<>0 then
|
|
impls^[i]:=equals^[impls^[i]]
|
|
else
|
|
inc(k);
|
|
end;
|
|
until k=max;
|
|
{ Update the implindex }
|
|
for i:=1 to max do
|
|
_class.implementedinterfaces.setimplindex(i,impls^[i]);
|
|
freemem(compats);
|
|
freemem(equals);
|
|
freemem(impls);
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfwritedata;
|
|
var
|
|
rawdata: TAsmList;
|
|
max,i,j : smallint;
|
|
begin
|
|
max:=_class.implementedinterfaces.count;
|
|
|
|
rawdata:=TAsmList.Create;
|
|
{ Two pass, one for allocation and vtbl creation }
|
|
for i:=1 to max do
|
|
begin
|
|
if _class.implementedinterfaces.implindex(i)=i then { if implement itself }
|
|
begin
|
|
{ allocate a pointer in the object memory }
|
|
with tobjectsymtable(_class.symtable) do
|
|
begin
|
|
datasize:=align(datasize,sizeof(aint));
|
|
_class.implementedinterfaces.setioffsets(i,datasize);
|
|
inc(datasize,sizeof(aint));
|
|
end;
|
|
{ write vtbl }
|
|
gintfcreatevtbl(i,rawdata);
|
|
end;
|
|
end;
|
|
{ second pass: for fill interfacetable and remained ioffsets }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_aint(max));
|
|
for i:=1 to max do
|
|
begin
|
|
j:=_class.implementedinterfaces.implindex(i);
|
|
if j<>i then
|
|
_class.implementedinterfaces.setioffsets(i,_class.implementedinterfaces.ioffsets(j));
|
|
gintfgenentry(i,j,rawdata);
|
|
end;
|
|
current_asmdata.asmlists[al_globals].concatlist(rawdata);
|
|
rawdata.free;
|
|
end;
|
|
|
|
|
|
function tclassheader.gintfgetcprocdef(proc: tprocdef;const name: string): tprocdef;
|
|
const
|
|
po_comp = [po_classmethod,po_staticmethod,po_interrupt,po_iocheck,po_msgstr,po_msgint,
|
|
po_exports,po_varargs,po_explicitparaloc,po_nostackframe];
|
|
var
|
|
sym: tsym;
|
|
implprocdef : Tprocdef;
|
|
i: cardinal;
|
|
begin
|
|
gintfgetcprocdef:=nil;
|
|
|
|
sym:=tsym(search_class_member(_class,name));
|
|
if assigned(sym) and
|
|
(sym.typ=procsym) then
|
|
begin
|
|
{ when the definition has overload directive set, we search for
|
|
overloaded definitions in the class, this only needs to be done once
|
|
for class entries as the tree keeps always the same }
|
|
if (not tprocsym(sym).overloadchecked) and
|
|
(po_overload in tprocsym(sym).first_procdef.procoptions) and
|
|
(tprocsym(sym).owner.symtabletype=objectsymtable) then
|
|
search_class_overloads(tprocsym(sym));
|
|
|
|
for i:=1 to tprocsym(sym).procdef_count do
|
|
begin
|
|
implprocdef:=tprocsym(sym).procdef[i];
|
|
if (compare_paras(proc.paras,implprocdef.paras,cp_none,[])>=te_equal) and
|
|
(proc.proccalloption=implprocdef.proccalloption) and
|
|
(proc.proctypeoption=implprocdef.proctypeoption) and
|
|
((proc.procoptions*po_comp)=((implprocdef.procoptions+[po_virtualmethod])*po_comp)) then
|
|
begin
|
|
gintfgetcprocdef:=implprocdef;
|
|
exit;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfdoonintf(intf: tobjectdef; intfindex: longint);
|
|
var
|
|
def: tdef;
|
|
hs,
|
|
prefix,
|
|
mappedname: string;
|
|
nextexist: pointer;
|
|
implprocdef: tprocdef;
|
|
begin
|
|
prefix:=_class.implementedinterfaces.interfaces(intfindex).symtable.name^+'.';
|
|
def:=tdef(intf.symtable.defindex.first);
|
|
while assigned(def) do
|
|
begin
|
|
if def.deftype=procdef then
|
|
begin
|
|
implprocdef:=nil;
|
|
nextexist:=nil;
|
|
repeat
|
|
hs:=prefix+tprocdef(def).procsym.name;
|
|
mappedname:=_class.implementedinterfaces.getmappings(intfindex,hs,nextexist);
|
|
if mappedname<>'' then
|
|
implprocdef:=gintfgetcprocdef(tprocdef(def),mappedname);
|
|
until assigned(implprocdef) or not assigned(nextexist);
|
|
if not assigned(implprocdef) then
|
|
implprocdef:=gintfgetcprocdef(tprocdef(def),tprocdef(def).procsym.name);
|
|
if assigned(implprocdef) then
|
|
_class.implementedinterfaces.addimplproc(intfindex,implprocdef)
|
|
else
|
|
Message1(sym_e_no_matching_implementation_found,tprocdef(def).fullprocname(false));
|
|
end;
|
|
def:=tdef(def.indexnext);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfwalkdowninterface(intf: tobjectdef; intfindex: longint);
|
|
begin
|
|
if assigned(intf.childof) then
|
|
gintfwalkdowninterface(intf.childof,intfindex);
|
|
gintfdoonintf(intf,intfindex);
|
|
end;
|
|
|
|
|
|
function tclassheader.genintftable: tasmlabel;
|
|
var
|
|
intfindex: longint;
|
|
curintf: tobjectdef;
|
|
intftable: tasmlabel;
|
|
begin
|
|
{ 1. step collect implementor functions into the implementedinterfaces.implprocs }
|
|
for intfindex:=1 to _class.implementedinterfaces.count do
|
|
begin
|
|
curintf:=_class.implementedinterfaces.interfaces(intfindex);
|
|
gintfwalkdowninterface(curintf,intfindex);
|
|
end;
|
|
{ 2. Optimize interface tables to reuse wrappers }
|
|
gintfoptimizevtbls;
|
|
{ 3. Calculate offsets in object map and Write interface tables }
|
|
current_asmdata.getdatalabel(intftable);
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(aint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_label.Create(intftable));
|
|
gintfwritedata;
|
|
genintftable:=intftable;
|
|
end;
|
|
|
|
|
|
{ Write interface identifiers to the data section }
|
|
procedure tclassheader.writeinterfaceids;
|
|
var
|
|
i : longint;
|
|
s : string;
|
|
begin
|
|
if assigned(_class.iidguid) then
|
|
begin
|
|
s:=make_mangledname('IID',_class.owner,_class.objname^);
|
|
maybe_new_object_file(current_asmdata.asmlists[al_globals]);
|
|
new_section(current_asmdata.asmlists[al_globals],sec_rodata,s,const_align(sizeof(aint)));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_symbol.Createname_global(s,AT_DATA,0));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_32bit(longint(_class.iidguid^.D1)));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_16bit(_class.iidguid^.D2));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_16bit(_class.iidguid^.D3));
|
|
for i:=Low(_class.iidguid^.D4) to High(_class.iidguid^.D4) do
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_8bit(_class.iidguid^.D4[i]));
|
|
end;
|
|
maybe_new_object_file(current_asmdata.asmlists[al_globals]);
|
|
s:=make_mangledname('IIDSTR',_class.owner,_class.objname^);
|
|
new_section(current_asmdata.asmlists[al_globals],sec_rodata,s,0);
|
|
current_asmdata.asmlists[al_globals].concat(Tai_symbol.Createname_global(s,AT_DATA,0));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_8bit(length(_class.iidstr^)));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_string.Create(_class.iidstr^));
|
|
end;
|
|
|
|
|
|
procedure tclassheader.writevirtualmethods(List:TAsmList);
|
|
var
|
|
vmtentry : pvmtentry;
|
|
procdefcoll : pprocdefcoll;
|
|
i : longint;
|
|
procname,
|
|
hs : string;
|
|
begin
|
|
{ walk trough all numbers for virtual methods and search }
|
|
{ the method }
|
|
for i:=0 to nextvirtnumber-1 do
|
|
begin
|
|
{ walk trough all symbols }
|
|
vmtentry:=firstvmtentry;
|
|
while assigned(vmtentry) do
|
|
begin
|
|
{ walk trough all methods }
|
|
procdefcoll:=vmtentry^.firstprocdef;
|
|
while assigned(procdefcoll) do
|
|
begin
|
|
{ writes the addresses to the VMT }
|
|
{ but only this which are declared as virtual }
|
|
if (procdefcoll^.data.extnumber=i) and
|
|
(po_virtualmethod in procdefcoll^.data.procoptions) then
|
|
begin
|
|
if (po_abstractmethod in procdefcoll^.data.procoptions) then
|
|
procname:='FPC_ABSTRACTERROR'
|
|
else
|
|
procname:=procdefcoll^.data.mangledname;
|
|
List.concat(Tai_const.createname(procname,0));
|
|
hs:='VTENTRY'+'_'+_class.vmt_mangledname+'$$'+tostr(_class.vmtmethodoffset(i) div sizeof(aint));
|
|
current_asmdata.asmlists[al_globals].concat(tai_symbol.CreateName(hs,AT_DATA,0));
|
|
break;
|
|
end;
|
|
procdefcoll:=procdefcoll^.next;
|
|
end;
|
|
vmtentry:=vmtentry^.next;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
{ generates the vmt for classes as well as for objects }
|
|
procedure tclassheader.writevmt;
|
|
|
|
var
|
|
methodnametable,intmessagetable,
|
|
strmessagetable,classnamelabel,
|
|
fieldtablelabel : tasmlabel;
|
|
{$ifdef WITHDMT}
|
|
dmtlabel : tasmlabel;
|
|
{$endif WITHDMT}
|
|
interfacetable : tasmlabel;
|
|
hs : string;
|
|
begin
|
|
{$ifdef WITHDMT}
|
|
dmtlabel:=gendmt;
|
|
{$endif WITHDMT}
|
|
|
|
{ write tables for classes, this must be done before the actual
|
|
class is written, because we need the labels defined }
|
|
if is_class(_class) then
|
|
begin
|
|
current_asmdata.getdatalabel(classnamelabel);
|
|
maybe_new_object_file(current_asmdata.asmlists[al_globals]);
|
|
new_section(current_asmdata.asmlists[al_globals],sec_rodata,classnamelabel.name,const_align(sizeof(aint)));
|
|
|
|
{ interface table }
|
|
if _class.implementedinterfaces.count>0 then
|
|
interfacetable:=genintftable;
|
|
|
|
methodnametable:=genpublishedmethodstable;
|
|
fieldtablelabel:=_class.generate_field_table;
|
|
{ write class name }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_label.Create(classnamelabel));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_8bit(length(_class.objrealname^)));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_string.Create(_class.objrealname^));
|
|
|
|
{ generate message and dynamic tables }
|
|
if (oo_has_msgstr in _class.objectoptions) then
|
|
strmessagetable:=genstrmsgtab;
|
|
if (oo_has_msgint in _class.objectoptions) then
|
|
intmessagetable:=genintmsgtab;
|
|
end;
|
|
|
|
{ write debug info }
|
|
maybe_new_object_file(current_asmdata.asmlists[al_globals]);
|
|
new_section(current_asmdata.asmlists[al_globals],sec_rodata,_class.vmt_mangledname,const_align(sizeof(aint)));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_symbol.Createname_global(_class.vmt_mangledname,AT_DATA,0));
|
|
|
|
{ determine the size with symtable.datasize, because }
|
|
{ size gives back 4 for classes }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create(aitconst_ptr,tobjectsymtable(_class.symtable).datasize));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create(aitconst_ptr,-int64(tobjectsymtable(_class.symtable).datasize)));
|
|
{$ifdef WITHDMT}
|
|
if _class.classtype=ct_object then
|
|
begin
|
|
if assigned(dmtlabel) then
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const_symbol.Create(dmtlabel)))
|
|
else
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_ptr(0));
|
|
end;
|
|
{$endif WITHDMT}
|
|
{ write pointer to parent VMT, this isn't implemented in TP }
|
|
{ but this is not used in FPC ? (PM) }
|
|
{ it's not used yet, but the delphi-operators as and is need it (FK) }
|
|
{ it is not written for parents that don't have any vmt !! }
|
|
if assigned(_class.childof) and
|
|
(oo_has_vmt in _class.childof.objectoptions) then
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Createname(_class.childof.vmt_mangledname,0))
|
|
else
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil));
|
|
|
|
{ write extended info for classes, for the order see rtl/inc/objpash.inc }
|
|
if is_class(_class) then
|
|
begin
|
|
{ pointer to class name string }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(classnamelabel));
|
|
{ pointer to dynamic table or nil }
|
|
if (oo_has_msgint in _class.objectoptions) then
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(intmessagetable))
|
|
else
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil));
|
|
{ pointer to method table or nil }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(methodnametable));
|
|
{ pointer to field table }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(fieldtablelabel));
|
|
{ pointer to type info of published section }
|
|
if (oo_can_have_published in _class.objectoptions) then
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(_class.get_rtti_label(fullrtti)))
|
|
else
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil));
|
|
{ inittable for con-/destruction }
|
|
if _class.members_need_inittable then
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(_class.get_rtti_label(initrtti)))
|
|
else
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil));
|
|
{ auto table }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil));
|
|
{ interface table }
|
|
if _class.implementedinterfaces.count>0 then
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(interfacetable))
|
|
else
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil));
|
|
{ table for string messages }
|
|
if (oo_has_msgstr in _class.objectoptions) then
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(strmessagetable))
|
|
else
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil));
|
|
end;
|
|
{ write virtual methods }
|
|
writevirtualmethods(current_asmdata.asmlists[al_globals]);
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.create(aitconst_ptr,0));
|
|
{ write the size of the VMT }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_symbol_end.Createname(_class.vmt_mangledname));
|
|
{ write vtinherit symbol to notify the linker of the class inheritance tree }
|
|
hs:='VTINHERIT'+'_'+_class.vmt_mangledname+'$$';
|
|
if assigned(_class.childof) then
|
|
hs:=hs+_class.childof.vmt_mangledname
|
|
else
|
|
hs:=hs+_class.vmt_mangledname;
|
|
current_asmdata.asmlists[al_globals].concat(tai_symbol.CreateName(hs,AT_DATA,0));
|
|
end;
|
|
|
|
|
|
end.
|