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https://gitlab.com/freepascal.org/fpc/source.git
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1371 lines
51 KiB
ObjectPascal
1371 lines
51 KiB
ObjectPascal
{
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$Id$
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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,cpuinfo,
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symdef,aasmbase,aasmtai,aasmcpu;
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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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next : pprocdefcoll;
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end;
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psymcoll = ^tsymcoll;
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tsymcoll = record
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name : pstring;
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data : pprocdefcoll;
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next : psymcoll;
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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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count : integer;
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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);
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procedure insertstr(p : pprocdeftree;var at : pprocdeftree);
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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(p : tnamedindexitem;arg:pointer);
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procedure genpubmethodtableentry(p : tnamedindexitem;arg:pointer);
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private
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{ vmt }
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wurzel : psymcoll;
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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 eachsym(sym : tnamedindexitem;arg:pointer);
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procedure disposevmttree;
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procedure writevirtualmethods(List:TAAsmoutput);
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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,rawcode: TAAsmoutput);
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procedure gintfgenentry(intfindex, contintfindex: integer; rawdata: TAAsmoutput);
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procedure gintfoptimizevtbls(implvtbl : plongint);
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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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protected
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{ adjusts the self value with ioffset when casting a interface
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to a class
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}
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procedure adjustselfvalue(procdef: tprocdef;ioffset: aword);virtual;
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{ generates the wrapper for a call to a method via an interface }
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procedure cgintfwrapper(asmlist: TAAsmoutput; procdef: tprocdef; const labelname: string; ioffset: longint);virtual;abstract;
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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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{$endif WITHDMT}
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{ interfaces }
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function genintftable: tasmlabel;
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{ write the VMT to datasegment }
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procedure writevmt;
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procedure writeinterfaceids;
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end;
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tclassheaderclass=class of tclassheader;
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var
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cclassheader : tclassheaderclass;
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implementation
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uses
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{$ifdef delphi}
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sysutils,
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{$else}
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strings,
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{$endif}
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globtype,globals,verbose,
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symtable,symconst,symtype,symsym,defbase,paramgr,
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{$ifdef GDB}
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gdb,
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{$endif GDB}
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cpubase,cgbase,cginfo,cgobj,rgobj
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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);
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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)
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else if p^.data.messageinf.i>at^.data.messageinf.i then
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insertint(p,at^.r)
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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);
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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)
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else if i>0 then
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insertstr(p,at^.r)
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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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hp : pprocdeflist;
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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).defs;
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while assigned(hp) do
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begin
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if (po_msgint in hp^.def.procoptions) then
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begin
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new(pt);
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pt^.data:=hp^.def;
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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^.next;
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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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hp : pprocdeflist;
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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).defs;
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while assigned(hp) do
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begin
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if (po_msgstr in hp^.def.procoptions) then
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begin
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new(pt);
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pt^.data:=hp^.def;
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pt^.l:=nil;
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pt^.r:=nil;
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insertstr(pt,root);
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end;
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hp:=hp^.next;
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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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begin
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objectlibrary.getdatalabel(p^.nl);
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if assigned(p^.l) then
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writenames(p^.l);
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dataSegment.concat(Tai_label.Create(p^.nl));
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dataSegment.concat(Tai_const.Create_8bit(strlen(p^.data.messageinf.str)));
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dataSegment.concat(Tai_string.Create_pchar(p^.data.messageinf.str));
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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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dataSegment.concat(Tai_const_symbol.Create(p^.nl));
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dataSegment.concat(Tai_const_symbol.Createname(p^.data.mangledname));
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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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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({$ifdef FPCPROCVAR}@{$endif}insertmsgstr,nil);
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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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objectlibrary.getdatalabel(r);
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dataSegment.concat(Tai_label.Create(r));
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genstrmsgtab:=r;
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dataSegment.concat(Tai_const.Create_32bit(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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dataSegment.concat(Tai_const.Create_32bit(p^.data.messageinf.i));
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dataSegment.concat(Tai_const_symbol.Createname(p^.data.mangledname));
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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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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({$ifdef FPCPROCVAR}@{$endif}insertmsgint,nil);
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{ now start writing of the message string table }
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objectlibrary.getdatalabel(r);
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dataSegment.concat(Tai_label.Create(r));
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genintmsgtab:=r;
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dataSegment.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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dataSegment.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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dataSegment.concat(Tai_const_symbol.Createname(p^.data.mangledname));
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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({$ifdef FPCPROCVAR}@{$endif}insertdmtentry);
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if count>0 then
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begin
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objectlibrary.getdatalabel(r);
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gendmt:=r;
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dataSegment.concat(Tai_label.Create(r));
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{ entries for caching }
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dataSegment.concat(Tai_const.Create_32bit(0));
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dataSegment.concat(Tai_const.Create_32bit(0));
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dataSegment.concat(Tai_const.Create_32bit(count));
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if assigned(root) then
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begin
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writedmtindexentry(root);
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writedmtaddressentry(root);
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disposeprocdeftree(root);
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end;
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end;
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end;
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{$endif WITHDMT}
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{**************************************
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Published Methods
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**************************************}
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procedure tclassheader.do_count(p : tnamedindexitem;arg:pointer);
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begin
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if (tsym(p).typ=procsym) and (sp_published in tsym(p).symoptions) then
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inc(count);
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end;
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procedure tclassheader.genpubmethodtableentry(p : tnamedindexitem;arg:pointer);
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var
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hp : tprocdef;
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l : tasmlabel;
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begin
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if (tsym(p).typ=procsym) and (sp_published in tsym(p).symoptions) then
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begin
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if assigned(tprocsym(p).defs^.next) then
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internalerror(1209992);
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hp:=tprocsym(p).defs^.def;
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objectlibrary.getdatalabel(l);
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Consts.concat(Tai_label.Create(l));
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Consts.concat(Tai_const.Create_8bit(length(p.name)));
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Consts.concat(Tai_string.Create(p.name));
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dataSegment.concat(Tai_const_symbol.Create(l));
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dataSegment.concat(Tai_const_symbol.Createname(hp.mangledname));
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end;
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end;
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function tclassheader.genpublishedmethodstable : tasmlabel;
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var
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l : tasmlabel;
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begin
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count:=0;
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_class.symtable.foreach({$ifdef FPCPROCVAR}@{$endif}do_count,nil);
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if count>0 then
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begin
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objectlibrary.getdatalabel(l);
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dataSegment.concat(Tai_label.Create(l));
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dataSegment.concat(Tai_const.Create_32bit(count));
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_class.symtable.foreach({$ifdef FPCPROCVAR}@{$endif}genpubmethodtableentry,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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VMT
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**************************************}
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procedure tclassheader.eachsym(sym : tnamedindexitem;arg:pointer);
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var
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procdefcoll : pprocdefcoll;
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hp : pprocdeflist;
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symcoll : psymcoll;
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_name : string;
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procedure newdefentry(pd:tprocdef);
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begin
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new(procdefcoll);
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procdefcoll^.data:=pd;
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procdefcoll^.hidden:=false;
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procdefcoll^.next:=symcoll^.data;
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symcoll^.data:=procdefcoll;
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{ if it's a virtual method }
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if (po_virtualmethod in pd.procoptions) then
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begin
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{ then it gets a number ... }
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pd.extnumber:=nextvirtnumber;
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{ and we inc the number }
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inc(nextvirtnumber);
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has_virtual_method:=true;
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end;
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if (pd.proctypeoption=potype_constructor) then
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has_constructor:=true;
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{ check, if a method should be overridden }
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if (pd._class=_class) and
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(po_overridingmethod in pd.procoptions) then
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MessagePos1(pd.fileinfo,parser_e_nothing_to_be_overridden,pd.fullprocname);
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end;
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{ creates a new entry in the procsym list }
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procedure newentry;
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begin
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{ if not, generate a new symbol item }
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new(symcoll);
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symcoll^.name:=stringdup(sym.name);
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symcoll^.next:=wurzel;
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symcoll^.data:=nil;
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wurzel:=symcoll;
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{ inserts all definitions }
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hp:=tprocsym(sym).defs;
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while assigned(hp) do
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begin
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newdefentry(hp^.def);
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hp:=hp^.next;
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end;
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end;
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label
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handlenextdef;
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var
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pd : tprocdef;
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pdoverload : boolean;
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begin
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{ put only sub routines into the VMT }
|
|
if tsym(sym).typ=procsym then
|
|
begin
|
|
{ check the current list of symbols }
|
|
_name:=sym.name;
|
|
symcoll:=wurzel;
|
|
while assigned(symcoll) do
|
|
begin
|
|
{ does the symbol already exist in the list ? }
|
|
if _name=symcoll^.name^ then
|
|
begin
|
|
{ walk through all defs of the symbol }
|
|
hp:=tprocsym(sym).defs;
|
|
while assigned(hp) do
|
|
begin
|
|
pd:=hp^.def;
|
|
if pd.procsym=sym then
|
|
begin
|
|
pdoverload:=(po_overload in pd.procoptions);
|
|
|
|
{ compare with all stored definitions }
|
|
procdefcoll:=symcoll^.data;
|
|
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
|
|
has no overload directive }
|
|
if not(po_virtualmethod in pd.procoptions) then
|
|
begin
|
|
if (not pdoverload or
|
|
equal_paras(procdefcoll^.data.para,pd.para,cp_value_equal_const)) and
|
|
(tstoredsym(procdefcoll^.data.procsym).is_visible_for_object(pd._class)) then
|
|
begin
|
|
procdefcoll^.hidden:=true;
|
|
if _class=pd._class then
|
|
MessagePos1(pd.fileinfo,parser_w_should_use_override,pd.fullprocname);
|
|
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
|
|
equal_paras(procdefcoll^.data.para,pd.para,cp_value_equal_const)) and
|
|
(tstoredsym(procdefcoll^.data.procsym).is_visible_for_object(pd._class)) then
|
|
begin
|
|
procdefcoll^.hidden:=true;
|
|
if _class=pd._class then
|
|
MessagePos1(pd.fileinfo,parser_w_should_use_override,pd.fullprocname);
|
|
end;
|
|
end
|
|
{ check if the method to override is visible }
|
|
else if (po_overridingmethod in pd.procoptions) and
|
|
(not tstoredsym(procdefcoll^.data.procsym).is_visible_for_object(pd._class)) then
|
|
begin
|
|
{ do nothing, the error will follow when adding the entry }
|
|
end
|
|
{ same parameters }
|
|
else if (equal_paras(procdefcoll^.data.para,pd.para,cp_value_equal_const)) then
|
|
begin
|
|
{ overload is inherited }
|
|
if (po_overload in procdefcoll^.data.procoptions) then
|
|
include(pd.procoptions,po_overload);
|
|
|
|
{ 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_abstractmethod,po_overridingmethod,po_assembler,po_overload])<>
|
|
(pd.procoptions-[po_abstractmethod,po_overridingmethod,po_assembler,po_overload])) then
|
|
MessagePos1(pd.fileinfo,parser_e_header_dont_match_forward,pd.fullprocname);
|
|
|
|
{ error, if the return types aren't equal }
|
|
if not(is_equal(procdefcoll^.data.rettype.def,pd.rettype.def)) and
|
|
not((procdefcoll^.data.rettype.def.deftype=objectdef) and
|
|
(pd.rettype.def.deftype=objectdef) and
|
|
is_class(procdefcoll^.data.rettype.def) and
|
|
is_class(pd.rettype.def) and
|
|
(tobjectdef(pd.rettype.def).is_related(
|
|
tobjectdef(procdefcoll^.data.rettype.def)))) then
|
|
Message2(parser_e_overridden_methods_not_same_ret,pd.fullprocnamewithret,
|
|
procdefcoll^.data.fullprocnamewithret);
|
|
|
|
{ now set the number }
|
|
pd.extnumber:=procdefcoll^.data.extnumber;
|
|
{ and exchange }
|
|
procdefcoll^.data:=pd;
|
|
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
|
|
procdefcoll^.hidden:=true;
|
|
if _class=pd._class then
|
|
MessagePos1(pd.fileinfo,parser_w_should_use_override,pd.fullprocname);
|
|
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 not pdoverload or
|
|
equal_paras(procdefcoll^.data.para,pd.para,cp_value_equal_const) 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 equal_paras(procdefcoll^.data.para,pd.para,cp_value_equal_const) or
|
|
not pdoverload 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(pd);
|
|
end;
|
|
handlenextdef:
|
|
hp:=hp^.next;
|
|
end;
|
|
exit;
|
|
end;
|
|
symcoll:=symcoll^.next;
|
|
end;
|
|
newentry;
|
|
end;
|
|
end;
|
|
|
|
procedure tclassheader.disposevmttree;
|
|
|
|
var
|
|
symcoll : psymcoll;
|
|
procdefcoll : pprocdefcoll;
|
|
|
|
begin
|
|
{ disposes the above generated tree }
|
|
symcoll:=wurzel;
|
|
while assigned(symcoll) do
|
|
begin
|
|
wurzel:=symcoll^.next;
|
|
stringdispose(symcoll^.name);
|
|
procdefcoll:=symcoll^.data;
|
|
while assigned(procdefcoll) do
|
|
begin
|
|
symcoll^.data:=procdefcoll^.next;
|
|
dispose(procdefcoll);
|
|
procdefcoll:=symcoll^.data;
|
|
end;
|
|
dispose(symcoll);
|
|
symcoll:=wurzel;
|
|
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({$ifdef FPCPROCVAR}@{$endif}eachsym,nil);
|
|
end;
|
|
|
|
begin
|
|
wurzel:=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:=mangledname_prefix('VTBL',_class.owner)+_class.objname^+
|
|
'_$_'+_class.implementedinterfaces.interfaces(intfindex).objname^;
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfcreatevtbl(intfindex: integer; rawdata,rawcode: TAAsmoutput);
|
|
var
|
|
implintf: timplementedinterfaces;
|
|
curintf: tobjectdef;
|
|
proccount: integer;
|
|
tmps: string;
|
|
i: longint;
|
|
begin
|
|
implintf:=_class.implementedinterfaces;
|
|
curintf:=implintf.interfaces(intfindex);
|
|
if (cs_create_smart in aktmoduleswitches) then
|
|
rawdata.concat(Tai_symbol.Createname_global(gintfgetvtbllabelname(intfindex),0))
|
|
else
|
|
rawdata.concat(Tai_symbol.Createname(gintfgetvtbllabelname(intfindex),0));
|
|
proccount:=implintf.implproccount(intfindex);
|
|
for i:=1 to proccount do
|
|
begin
|
|
tmps:=mangledname_prefix('WRPR',_class.owner)+_class.objname^+'_$_'+curintf.objname^+'_$_'+implintf.implprocs(intfindex,i).mangledname;
|
|
{ create wrapper code }
|
|
cgintfwrapper(rawcode,implintf.implprocs(intfindex,i),tmps,implintf.ioffsets(intfindex)^);
|
|
{ create reference }
|
|
rawdata.concat(Tai_const_symbol.Createname(tmps));
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfgenentry(intfindex, contintfindex: integer; rawdata: TAAsmoutput);
|
|
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 }
|
|
objectlibrary.getdatalabel(tmplabel);
|
|
rawdata.concat(Tai_label.Create(tmplabel));
|
|
rawdata.concat(Tai_const.Create_32bit(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]));
|
|
dataSegment.concat(Tai_const_symbol.Create(tmplabel));
|
|
end
|
|
else
|
|
begin
|
|
{ nil for Corba interfaces }
|
|
dataSegment.concat(Tai_const.Create_32bit(0)); { nil }
|
|
end;
|
|
{ VTable }
|
|
dataSegment.concat(Tai_const_symbol.Createname(gintfgetvtbllabelname(contintfindex)));
|
|
{ IOffset field }
|
|
dataSegment.concat(Tai_const.Create_32bit(implintf.ioffsets(contintfindex)^));
|
|
{ IIDStr }
|
|
objectlibrary.getdatalabel(tmplabel);
|
|
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^));
|
|
dataSegment.concat(Tai_const_symbol.Create(tmplabel));
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfoptimizevtbls(implvtbl : plongint);
|
|
type
|
|
tcompintfentry = record
|
|
weight: longint;
|
|
compintf: longint;
|
|
end;
|
|
{ Max 1000 interface in the class header interfaces it's enough imho }
|
|
tcompintfs = packed array[1..1000] of tcompintfentry;
|
|
pcompintfs = ^tcompintfs;
|
|
tequals = packed array[1..1000] of longint;
|
|
pequals = ^tequals;
|
|
var
|
|
max: longint;
|
|
equals: pequals;
|
|
compats: pcompintfs;
|
|
i: longint;
|
|
j: longint;
|
|
w: 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);
|
|
fillchar(compats^,sizeof(tcompintfentry)*max,0);
|
|
fillchar(equals^,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;
|
|
for i:=1 to max do
|
|
begin
|
|
if compats^[i].compintf<>0 then
|
|
implvtbl[i]:=compats^[i].compintf
|
|
else if equals^[i]<>0 then
|
|
implvtbl[i]:=equals^[i]
|
|
else
|
|
implvtbl[i]:=i;
|
|
end;
|
|
freemem(compats,sizeof(tcompintfentry)*max);
|
|
freemem(equals,sizeof(longint)*max);
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfwritedata;
|
|
var
|
|
rawdata,rawcode: taasmoutput;
|
|
impintfindexes: plongint;
|
|
max: longint;
|
|
i: longint;
|
|
begin
|
|
max:=_class.implementedinterfaces.count;
|
|
getmem(impintfindexes,(max+1)*sizeof(longint));
|
|
|
|
gintfoptimizevtbls(impintfindexes);
|
|
|
|
rawdata:=TAAsmOutput.Create;
|
|
rawcode:=TAAsmOutput.Create;
|
|
dataSegment.concat(Tai_const.Create_16bit(max));
|
|
{ Two pass, one for allocation and vtbl creation }
|
|
for i:=1 to max do
|
|
begin
|
|
if impintfindexes[i]=i then { if implement itself }
|
|
begin
|
|
{ allocate a pointer in the object memory }
|
|
with tstoredsymtable(_class.symtable) do
|
|
begin
|
|
if (dataalignment>=pointer_size) then
|
|
datasize:=align(datasize,dataalignment)
|
|
else
|
|
datasize:=align(datasize,pointer_size);
|
|
_class.implementedinterfaces.ioffsets(i)^:=datasize;
|
|
datasize:=datasize+pointer_size;
|
|
end;
|
|
{ write vtbl }
|
|
gintfcreatevtbl(i,rawdata,rawcode);
|
|
end;
|
|
end;
|
|
{ second pass: for fill interfacetable and remained ioffsets }
|
|
for i:=1 to max do
|
|
begin
|
|
if i<>impintfindexes[i] then { why execute x:=x ? }
|
|
with _class.implementedinterfaces do
|
|
ioffsets(i)^:=ioffsets(impintfindexes[i])^;
|
|
gintfgenentry(i,impintfindexes[i],rawdata);
|
|
end;
|
|
dataSegment.concatlist(rawdata);
|
|
rawdata.free;
|
|
codeSegment.concatlist(rawcode);
|
|
rawcode.free;
|
|
freemem(impintfindexes,(max+1)*sizeof(longint));
|
|
end;
|
|
|
|
|
|
function tclassheader.gintfgetcprocdef(proc: tprocdef;const name: string): tprocdef;
|
|
var
|
|
sym: tprocsym;
|
|
implprocdef : pprocdeflist;
|
|
begin
|
|
gintfgetcprocdef:=nil;
|
|
sym:=tprocsym(search_class_member(_class,name));
|
|
if assigned(sym) and (sym.typ=procsym) then
|
|
begin
|
|
implprocdef:=sym.defs;
|
|
while assigned(implprocdef) do
|
|
begin
|
|
if equal_paras(proc.para,implprocdef^.def.para,cp_none) and
|
|
(proc.proccalloption=implprocdef^.def.proccalloption) then
|
|
begin
|
|
gintfgetcprocdef:=implprocdef^.def;
|
|
exit;
|
|
end;
|
|
implprocdef:=implprocdef^.next;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tclassheader.gintfdoonintf(intf: tobjectdef; intfindex: longint);
|
|
var
|
|
i: longint;
|
|
proc: tprocdef;
|
|
procname: string; { for error }
|
|
mappedname: string;
|
|
nextexist: pointer;
|
|
implprocdef: tprocdef;
|
|
begin
|
|
for i:=1 to intf.symtable.defindex.count do
|
|
begin
|
|
proc:=tprocdef(intf.symtable.defindex.search(i));
|
|
if proc.deftype=procdef then
|
|
begin
|
|
procname:='';
|
|
implprocdef:=nil;
|
|
nextexist:=nil;
|
|
repeat
|
|
mappedname:=_class.implementedinterfaces.getmappings(intfindex,proc.procsym.name,nextexist);
|
|
if procname='' then
|
|
procname:=proc.procsym.name;
|
|
//mappedname; { for error messages }
|
|
if mappedname<>'' then
|
|
implprocdef:=gintfgetcprocdef(proc,mappedname);
|
|
until assigned(implprocdef) or not assigned(nextexist);
|
|
if not assigned(implprocdef) then
|
|
implprocdef:=gintfgetcprocdef(proc,proc.procsym.name);
|
|
if procname='' then
|
|
procname:=proc.procsym.name;
|
|
if assigned(implprocdef) then
|
|
_class.implementedinterfaces.addimplproc(intfindex,implprocdef)
|
|
else
|
|
Message1(sym_e_no_matching_implementation_found,proc.fullprocnamewithret);
|
|
end;
|
|
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. step calc required fieldcount and their offsets in the object memory map
|
|
and write data }
|
|
objectlibrary.getdatalabel(intftable);
|
|
dataSegment.concat(Tai_label.Create(intftable));
|
|
gintfwritedata;
|
|
_class.implementedinterfaces.clearimplprocs; { release temporary information }
|
|
genintftable:=intftable;
|
|
end;
|
|
|
|
|
|
{ Write interface identifiers to the data section }
|
|
procedure tclassheader.writeinterfaceids;
|
|
var
|
|
i: longint;
|
|
begin
|
|
if _class.isiidguidvalid then
|
|
begin
|
|
if (cs_create_smart in aktmoduleswitches) then
|
|
dataSegment.concat(Tai_cut.Create);
|
|
dataSegment.concat(Tai_symbol.Createname_global(mangledname_prefix('IID',_class.owner)+_class.objname^,0));
|
|
dataSegment.concat(Tai_const.Create_32bit(longint(_class.iidguid.D1)));
|
|
dataSegment.concat(Tai_const.Create_16bit(_class.iidguid.D2));
|
|
dataSegment.concat(Tai_const.Create_16bit(_class.iidguid.D3));
|
|
for i:=Low(_class.iidguid.D4) to High(_class.iidguid.D4) do
|
|
dataSegment.concat(Tai_const.Create_8bit(_class.iidguid.D4[i]));
|
|
end;
|
|
if (cs_create_smart in aktmoduleswitches) then
|
|
dataSegment.concat(Tai_cut.Create);
|
|
dataSegment.concat(Tai_symbol.Createname_global(mangledname_prefix('IIDSTR',_class.owner)+_class.objname^,0));
|
|
dataSegment.concat(Tai_const.Create_8bit(length(_class.iidstr^)));
|
|
dataSegment.concat(Tai_string.Create(_class.iidstr^));
|
|
end;
|
|
|
|
|
|
procedure tclassheader.writevirtualmethods(List:TAAsmoutput);
|
|
var
|
|
symcoll : psymcoll;
|
|
procdefcoll : pprocdefcoll;
|
|
i : longint;
|
|
begin
|
|
{ walk trough all numbers for virtual methods and search }
|
|
{ the method }
|
|
for i:=0 to nextvirtnumber-1 do
|
|
begin
|
|
symcoll:=wurzel;
|
|
|
|
{ walk trough all symbols }
|
|
while assigned(symcoll) do
|
|
begin
|
|
|
|
{ walk trough all methods }
|
|
procdefcoll:=symcoll^.data;
|
|
while assigned(procdefcoll) do
|
|
begin
|
|
{ writes the addresses to the VMT }
|
|
{ but only this which are declared as virtual }
|
|
if procdefcoll^.data.extnumber=i then
|
|
begin
|
|
if (po_virtualmethod in procdefcoll^.data.procoptions) then
|
|
begin
|
|
{ if a method is abstract, then is also the }
|
|
{ class abstract and it's not allow to }
|
|
{ generates an instance }
|
|
if (po_abstractmethod in procdefcoll^.data.procoptions) then
|
|
begin
|
|
include(_class.objectoptions,oo_has_abstract);
|
|
List.concat(Tai_const_symbol.Createname('FPC_ABSTRACTERROR'));
|
|
end
|
|
else
|
|
begin
|
|
List.concat(Tai_const_symbol.createname(procdefcoll^.data.mangledname));
|
|
end;
|
|
end;
|
|
end;
|
|
procdefcoll:=procdefcoll^.next;
|
|
end;
|
|
symcoll:=symcoll^.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;
|
|
{$endif WITHDMT}
|
|
interfacetable : tasmlabel;
|
|
begin
|
|
{$ifdef WITHDMT}
|
|
dmtlabel:=gendmt;
|
|
{$endif WITHDMT}
|
|
|
|
if (cs_create_smart in aktmoduleswitches) then
|
|
dataSegment.concat(Tai_cut.Create);
|
|
|
|
{ write tables for classes, this must be done before the actual
|
|
class is written, because we need the labels defined }
|
|
if is_class(_class) then
|
|
begin
|
|
{ interface table }
|
|
if _class.implementedinterfaces.count>0 then
|
|
begin
|
|
if (cs_create_smart in aktmoduleswitches) then
|
|
codeSegment.concat(Tai_cut.Create);
|
|
interfacetable:=genintftable;
|
|
end;
|
|
|
|
methodnametable:=genpublishedmethodstable;
|
|
fieldtablelabel:=_class.generate_field_table;
|
|
{ write class name }
|
|
objectlibrary.getdatalabel(classnamelabel);
|
|
dataSegment.concat(Tai_label.Create(classnamelabel));
|
|
dataSegment.concat(Tai_const.Create_8bit(length(_class.objrealname^)));
|
|
dataSegment.concat(Tai_string.Create(_class.objrealname^));
|
|
{ generate message and dynamic tables }
|
|
if (oo_has_msgstr in _class.objectoptions) then
|
|
strmessagetable:=genstrmsgtab;
|
|
if (oo_has_msgint in _class.objectoptions) then
|
|
intmessagetable:=genintmsgtab
|
|
else
|
|
dataSegment.concat(Tai_const.Create_32bit(0));
|
|
end;
|
|
|
|
{ write debug info }
|
|
{$ifdef GDB}
|
|
if (cs_debuginfo in aktmoduleswitches) then
|
|
begin
|
|
do_count_dbx:=true;
|
|
if assigned(_class.owner) and assigned(_class.owner.name) then
|
|
dataSegment.concat(Tai_stabs.Create(strpnew('"vmt_'+_class.owner.name^+_class.name+':S'+
|
|
typeglobalnumber('__vtbl_ptr_type')+'",'+tostr(N_STSYM)+',0,0,'+_class.vmt_mangledname)));
|
|
end;
|
|
{$endif GDB}
|
|
dataSegment.concat(Tai_symbol.Createdataname_global(_class.vmt_mangledname,0));
|
|
|
|
{ determine the size with symtable.datasize, because }
|
|
{ size gives back 4 for classes }
|
|
dataSegment.concat(Tai_const.Create_32bit(_class.symtable.datasize));
|
|
dataSegment.concat(Tai_const.Create_32bit(-_class.symtable.datasize));
|
|
{$ifdef WITHDMT}
|
|
if _class.classtype=ct_object then
|
|
begin
|
|
if assigned(dmtlabel) then
|
|
dataSegment.concat(Tai_const_symbol.Create(dmtlabel)))
|
|
else
|
|
dataSegment.concat(Tai_const.Create_32bit(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
|
|
dataSegment.concat(Tai_const_symbol.Createname(_class.childof.vmt_mangledname))
|
|
else
|
|
dataSegment.concat(Tai_const.Create_32bit(0));
|
|
|
|
{ write extended info for classes, for the order see rtl/inc/objpash.inc }
|
|
if is_class(_class) then
|
|
begin
|
|
{ pointer to class name string }
|
|
dataSegment.concat(Tai_const_symbol.Create(classnamelabel));
|
|
{ pointer to dynamic table }
|
|
if (oo_has_msgint in _class.objectoptions) then
|
|
dataSegment.concat(Tai_const_symbol.Create(intmessagetable))
|
|
else
|
|
dataSegment.concat(Tai_const.Create_32bit(0));
|
|
{ pointer to method table }
|
|
if assigned(methodnametable) then
|
|
dataSegment.concat(Tai_const_symbol.Create(methodnametable))
|
|
else
|
|
dataSegment.concat(Tai_const.Create_32bit(0));
|
|
{ pointer to field table }
|
|
dataSegment.concat(Tai_const_symbol.Create(fieldtablelabel));
|
|
{ pointer to type info of published section }
|
|
if (oo_can_have_published in _class.objectoptions) then
|
|
dataSegment.concat(Tai_const_symbol.Create(_class.get_rtti_label(fullrtti)))
|
|
else
|
|
dataSegment.concat(Tai_const.Create_32bit(0));
|
|
{ inittable for con-/destruction, for classes this is always generated }
|
|
dataSegment.concat(Tai_const_symbol.Create(_class.get_rtti_label(initrtti)));
|
|
{ auto table }
|
|
dataSegment.concat(Tai_const.Create_32bit(0));
|
|
{ interface table }
|
|
if _class.implementedinterfaces.count>0 then
|
|
dataSegment.concat(Tai_const_symbol.Create(interfacetable))
|
|
else
|
|
dataSegment.concat(Tai_const.Create_32bit(0));
|
|
{ table for string messages }
|
|
if (oo_has_msgstr in _class.objectoptions) then
|
|
dataSegment.concat(Tai_const_symbol.Create(strmessagetable))
|
|
else
|
|
dataSegment.concat(Tai_const.Create_32bit(0));
|
|
end;
|
|
{ write virtual methods }
|
|
writevirtualmethods(dataSegment);
|
|
{ write the size of the VMT }
|
|
dataSegment.concat(Tai_symbol_end.Createname(_class.vmt_mangledname));
|
|
end;
|
|
|
|
procedure tclassheader.adjustselfvalue(procdef: tprocdef;ioffset: aword);
|
|
var
|
|
href : treference;
|
|
l : tparalocation;
|
|
begin
|
|
l:=paramanager.getselflocation(procdef);
|
|
case l.loc of
|
|
LOC_REGISTER:
|
|
cg.a_op_const_reg(exprasmlist,OP_SUB,ioffset,l.register);
|
|
LOC_REFERENCE:
|
|
begin
|
|
reference_reset_base(href,l.reference.index,l.reference.offset);
|
|
cg.a_op_const_ref(exprasmlist,OP_SUB,OS_ADDR,ioffset,href);
|
|
end
|
|
else
|
|
internalerror(2002080801);
|
|
end;
|
|
end;
|
|
|
|
|
|
initialization
|
|
cclassheader:=tclassheader;
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.25 2002-08-11 14:32:27 peter
|
|
* renamed current_library to objectlibrary
|
|
|
|
Revision 1.24 2002/08/11 13:24:12 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 1.23 2002/08/09 07:33:01 florian
|
|
* a couple of interface related fixes
|
|
|
|
Revision 1.22 2002/07/20 11:57:55 florian
|
|
* types.pas renamed to defbase.pas because D6 contains a types
|
|
unit so this would conflicts if D6 programms are compiled
|
|
+ Willamette/SSE2 instructions to assembler added
|
|
|
|
Revision 1.21 2002/07/01 18:46:23 peter
|
|
* internal linker
|
|
* reorganized aasm layer
|
|
|
|
Revision 1.20 2002/05/18 13:34:10 peter
|
|
* readded missing revisions
|
|
|
|
Revision 1.19 2002/05/16 19:46:39 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 1.17 2002/05/12 16:53:08 peter
|
|
* moved entry and exitcode to ncgutil and cgobj
|
|
* foreach gets extra argument for passing local data to the
|
|
iterator function
|
|
* -CR checks also class typecasts at runtime by changing them
|
|
into as
|
|
* fixed compiler to cycle with the -CR option
|
|
* fixed stabs with elf writer, finally the global variables can
|
|
be watched
|
|
* removed a lot of routines from cga unit and replaced them by
|
|
calls to cgobj
|
|
* u32bit-s32bit updates for and,or,xor nodes. When one element is
|
|
u32bit then the other is typecasted also to u32bit without giving
|
|
a rangecheck warning/error.
|
|
* fixed pascal calling method with reversing also the high tree in
|
|
the parast, detected by tcalcst3 test
|
|
|
|
Revision 1.16 2002/04/20 21:32:24 carl
|
|
+ generic FPC_CHECKPOINTER
|
|
+ first parameter offset in stack now portable
|
|
* rename some constants
|
|
+ move some cpu stuff to other units
|
|
- remove unused constents
|
|
* fix stacksize for some targets
|
|
* fix generic size problems which depend now on EXTEND_SIZE constant
|
|
|
|
Revision 1.15 2002/04/19 15:46:01 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 1.14 2002/04/15 18:59:07 carl
|
|
+ target_info.size_of_pointer -> pointer_Size
|
|
|
|
Revision 1.13 2002/02/11 18:51:35 peter
|
|
* fixed vmt generation for private procedures that were skipped after
|
|
my previous changes
|
|
|
|
}
|