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https://gitlab.com/freepascal.org/fpc/source.git
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1594 lines
63 KiB
ObjectPascal
1594 lines
63 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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TVMTBuilder=class
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private
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_Class : tobjectdef;
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handledprotocols: tfpobjectlist;
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function is_new_vmt_entry(pd:tprocdef; out overridesclasshelper: boolean):boolean;
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procedure add_new_vmt_entry(pd:tprocdef; allowoverridingmethod: boolean);
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function check_msg_str(vmtpd, pd: tprocdef):boolean;
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function intf_search_procdef_by_name(proc: tprocdef;const name: string): tprocdef;
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procedure intf_get_procdefs(ImplIntf:TImplementedInterface;IntfDef:TObjectDef);
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procedure intf_get_procdefs_recursive(ImplIntf:TImplementedInterface;IntfDef:TObjectDef);
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procedure prot_get_procdefs_recursive(ImplProt:TImplementedInterface;ProtDef:TObjectDef);
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procedure intf_optimize_vtbls;
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procedure intf_allocate_vtbls;
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public
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constructor create(c:tobjectdef);
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destructor destroy;override;
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procedure generate_vmt;
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procedure build_interface_mappings;
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end;
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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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TVMTWriter=class
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private
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_Class : tobjectdef;
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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:TObject;arg:pointer);
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procedure insertmsgstr(p:TObject;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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{ dmt }
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procedure insertdmtentry(p:TObject;arg:pointer);
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procedure writedmtindexentry(p : pprocdeftree);
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procedure writedmtaddressentry(p : pprocdeftree);
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{$endif}
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{ published methods }
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procedure do_count_published_methods(p:TObject;arg:pointer);
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procedure do_gen_published_methods(p:TObject;arg:pointer);
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{ virtual methods }
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procedure writevirtualmethods(List:TAsmList);
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{ interface tables }
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function intf_get_vtbl_name(AImplIntf:TImplementedInterface): string;
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procedure intf_create_vtbl(rawdata: TAsmList;AImplIntf:TImplementedInterface);
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procedure intf_gen_intf_ref(rawdata: TAsmList;AImplIntf:TImplementedInterface);
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function intf_write_table:TAsmLabel;
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{ generates the message tables for a class }
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function genstrmsgtab : tasmlabel;
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function genintmsgtab : tasmlabel;
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function genpublishedmethodstable : tasmlabel;
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function generate_field_table : tasmlabel;
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{$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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public
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constructor create(c:tobjectdef);
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destructor destroy;override;
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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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SysUtils,
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globals,verbose,systems,
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node,
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symbase,symtable,symconst,symtype,defcmp,
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dbgbase,
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ncgrtti,
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wpobase
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;
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{*****************************************************************************
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TVMTBuilder
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*****************************************************************************}
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constructor TVMTBuilder.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 TVMTBuilder.destroy;
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begin
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end;
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procedure TVMTBuilder.add_new_vmt_entry(pd:tprocdef; allowoverridingmethod: boolean);
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var
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i : longint;
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vmtentry : pvmtentry;
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vmtpd : tprocdef;
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begin
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{ new entry is needed, override was not possible }
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{ Allowed when overriding a category method for a parent class in a
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descendent Objective-C class }
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if not allowoverridingmethod 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(false));
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{ check that all methods have overload directive }
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if not(m_fpc in current_settings.modeswitches) then
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begin
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for i:=0 to _class.vmtentries.count-1 do
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begin
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vmtentry:=pvmtentry(_class.vmtentries[i]);
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vmtpd:=tprocdef(vmtentry^.procdef);
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if (vmtpd.procsym=pd.procsym) and
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(not(po_overload in pd.procoptions) or
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not(po_overload in vmtpd.procoptions)) then
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begin
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MessagePos1(pd.fileinfo,parser_e_no_overload_for_all_procs,pd.procsym.realname);
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{ recover }
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include(vmtpd.procoptions,po_overload);
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include(pd.procoptions,po_overload);
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end;
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end;
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end;
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{ Register virtual method and give it a number }
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if (po_virtualmethod in pd.procoptions) then
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begin
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{ store vmt entry number in procdef }
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if (pd.extnumber<>$ffff) and
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(pd.extnumber<>_class.VMTEntries.Count) then
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internalerror(200810283);
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pd.extnumber:=_class.VMTEntries.Count;
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new(vmtentry);
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vmtentry^.procdef:=pd;
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vmtentry^.procdefderef.reset;
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vmtentry^.visibility:=pd.visibility;
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_class.VMTEntries.Add(vmtentry);
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end;
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end;
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function TVMTBuilder.check_msg_str(vmtpd, pd: tprocdef): boolean;
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begin
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result:=true;
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if not(is_objc_class_or_protocol(_class)) then
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begin
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{ the only requirement for normal methods is that both either
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have a message string or not (the value is irrelevant) }
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if ((pd.procoptions * [po_msgstr]) <> (vmtpd.procoptions * [po_msgstr])) then
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begin
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MessagePos1(pd.fileinfo,parser_e_header_dont_match_forward,pd.fullprocname(false));
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tprocsym(vmtpd.procsym).write_parameter_lists(pd);
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result:=false;
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end
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end
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else
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begin
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{ the compiler should have ensured that the protocol or parent
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class method has a message name specified }
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if not(po_msgstr in vmtpd.procoptions) then
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internalerror(2009070601);
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if not(po_msgstr in pd.procoptions) then
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begin
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{ copy the protocol's/parent class' message name to the one in
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the class if none has been specified there }
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include(pd.procoptions,po_msgstr);
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pd.messageinf.str:=stringdup(vmtpd.messageinf.str^);
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end
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else
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begin
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{ if both have a message name, make sure they are equal }
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if (vmtpd.messageinf.str^<>pd.messageinf.str^) then
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begin
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MessagePos2(pd.fileinfo,parser_e_objc_message_name_changed,vmtpd.messageinf.str^,pd.messageinf.str^);
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result:=false;
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end;
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end;
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end;
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end;
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function TVMTBuilder.is_new_vmt_entry(pd:tprocdef; out overridesclasshelper: boolean):boolean;
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const
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po_comp = [po_classmethod,po_virtualmethod,po_staticmethod,po_interrupt,po_iocheck,po_msgint,
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po_exports,po_varargs,po_explicitparaloc,po_nostackframe];
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var
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i : longint;
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hasequalpara,
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hasoverloads,
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pdoverload : boolean;
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srsym : tsym;
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st : tsymtable;
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// returns true if we can stop checking, false if we have to continue
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function found_entry(var vmtpd: tprocdef; var vmtentryvis: tvisibility; updatevalues: boolean): boolean;
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begin
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result:=false;
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{ ignore hidden entries (e.g. virtual overridden by a static) that are not visible anymore }
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if vmtentryvis=vis_hidden then
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exit;
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{ ignore different names }
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if vmtpd.procsym.name<>pd.procsym.name then
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exit;
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{ hide private methods that are not visible anymore. For this check we
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must override the visibility with the highest value in the override chain.
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This is required for case (see tw3292) with protected-private-protected where the
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same vmtentry is used (PFV) }
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if not is_visible_for_object(vmtpd.owner,vmtentryvis,_class) then
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exit;
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{ inherit overload }
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if (po_overload in vmtpd.procoptions) then
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begin
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include(pd.procoptions,po_overload);
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pdoverload:=true;
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end;
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{ compare parameter types only, no specifiers yet }
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hasequalpara:=(compare_paras(vmtpd.paras,pd.paras,cp_none,[cpo_ignoreuniv,cpo_ignorehidden])>=te_equal);
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{ check that we are not trying to override a final method }
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if (po_finalmethod in vmtpd.procoptions) and
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hasequalpara and (po_overridingmethod in pd.procoptions) and
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(is_class(_class) or is_objectpascal_helper(_class)) then
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MessagePos1(pd.fileinfo,parser_e_final_can_no_be_overridden,pd.fullprocname(false))
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else
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{ old definition has virtual
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new definition has no virtual or override }
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if (po_virtualmethod in vmtpd.procoptions) and
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(
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not(po_virtualmethod in pd.procoptions) or
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(
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{ new one does not have reintroduce in case of an objccategory }
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(is_objccategory(_class) and not(po_reintroduce in pd.procoptions)) or
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{ new one does not have override in case of objpas/objc class/helper/intf/proto }
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(
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(is_class_or_interface_or_objc(_class) or is_objectpascal_helper(_class)) and
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not is_objccategory(_class) and not(po_overridingmethod in pd.procoptions)
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)
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)
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) then
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begin
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if (
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not(pdoverload or hasoverloads) or
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hasequalpara
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) then
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begin
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if not(po_reintroduce in pd.procoptions) then
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if not(is_objc_class_or_protocol(_class)) then
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MessagePos1(pd.fileinfo,parser_w_should_use_override,pd.fullprocname(false))
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else
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begin
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{ In Objective-C, you cannot create a new VMT entry to
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start a new inheritance tree. We therefore give an
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error when the class is implemented in Pascal, to
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avoid confusion due to things working differently
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with Object Pascal classes.
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In case of external classes, we only give a hint,
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because requiring override everywhere may make
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automated header translation tools too complex. }
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if not(oo_is_external in _class.objectoptions) then
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if not is_objccategory(_class) then
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MessagePos1(pd.fileinfo,parser_e_must_use_override_objc,FullTypeName(tdef(vmtpd.owner.defowner),nil))
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else
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MessagePos1(pd.fileinfo,parser_e_must_use_reintroduce_objc,FullTypeName(tdef(vmtpd.owner.defowner),nil))
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{ there may be a lot of these in auto-translated
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heaeders, so only calculate the fulltypename if
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the hint will be shown }
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else if CheckVerbosity(V_Hint) then
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if not is_objccategory(_class) then
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MessagePos1(pd.fileinfo,parser_h_should_use_override_objc,FullTypeName(tdef(vmtpd.owner.defowner),nil))
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else
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MessagePos1(pd.fileinfo,parser_h_should_use_reintroduce_objc,FullTypeName(tdef(vmtpd.owner.defowner),nil));
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{ no new entry, but copy the message name if any from
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the procdef in the parent class }
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check_msg_str(vmtpd,pd);
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result:=true;
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exit;
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end;
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{ disable/hide old VMT entry }
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if updatevalues then
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vmtentryvis:=vis_hidden;
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end;
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end
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{ both are virtual? }
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else if (po_virtualmethod in pd.procoptions) and
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(po_virtualmethod in vmtpd.procoptions) then
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begin
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{ same parameter and return types (parameter specifiers will be checked below) }
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if hasequalpara and
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compatible_childmethod_resultdef(vmtpd.returndef,pd.returndef) then
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begin
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{ inherite calling convention when it was explicit and the
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current definition has none explicit set }
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if (po_hascallingconvention in vmtpd.procoptions) and
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not(po_hascallingconvention in pd.procoptions) then
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begin
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pd.proccalloption:=vmtpd.proccalloption;
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include(pd.procoptions,po_hascallingconvention);
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end;
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{ All parameter specifiers and some procedure the flags have to match
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except abstract and override }
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if (compare_paras(vmtpd.paras,pd.paras,cp_all,[cpo_ignoreuniv,cpo_ignorehidden])<te_equal) or
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(vmtpd.proccalloption<>pd.proccalloption) or
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(vmtpd.proctypeoption<>pd.proctypeoption) or
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((vmtpd.procoptions*po_comp)<>(pd.procoptions*po_comp)) then
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begin
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MessagePos1(pd.fileinfo,parser_e_header_dont_match_forward,pd.fullprocname(false));
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tprocsym(vmtpd.procsym).write_parameter_lists(pd);
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end;
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check_msg_str(vmtpd,pd);
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{ Give a note if the new visibility is lower. For a higher
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visibility update the vmt info }
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if vmtentryvis>pd.visibility then
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MessagePos4(pd.fileinfo,parser_n_ignore_lower_visibility,pd.fullprocname(false),
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visibilityname[pd.visibility],tobjectdef(vmtpd.owner.defowner).objrealname^,visibilityname[vmtentryvis])
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else if pd.visibility>vmtentryvis then
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begin
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if updatevalues then
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vmtentryvis:=pd.visibility;
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end;
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{ override old virtual method in VMT }
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if updatevalues then
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begin
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if (vmtpd.extnumber<>i) then
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internalerror(200611084);
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pd.extnumber:=vmtpd.extnumber;
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vmtpd:=pd;
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end;
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result:=true;
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exit;
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end
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{ different parameters }
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else
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begin
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{ when we got an override directive then can search futher for
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the procedure to override.
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If we are starting a new virtual tree then hide the old tree }
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if not(po_overridingmethod in pd.procoptions) and
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not(pdoverload or hasoverloads) then
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begin
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if not(po_reintroduce in pd.procoptions) then
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begin
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if not is_object(_class) and
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not is_objc_class_or_protocol(_class) then
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MessagePos1(pd.fileinfo,parser_w_should_use_override,pd.fullprocname(false))
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else
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{ objects don't allow starting a new virtual tree
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and neither does Objective-C }
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MessagePos1(pd.fileinfo,parser_e_header_dont_match_forward,vmtpd.fullprocname(false));
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end;
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{ disable/hide old VMT entry }
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if updatevalues then
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vmtentryvis:=vis_hidden;
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end;
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end;
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end;
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end;
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function found_category_method(st: tsymtable): boolean;
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var
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entrycount: longint;
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cat: tobjectdef;
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vmtpd: tprocdef;
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vmtvis: tvisibility;
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begin
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result:=false;
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if is_objccategory(tdef(st.defowner)) then
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begin
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cat:=tobjectdef(st.defowner);
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{ go through all of the category's methods to find the
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vmtentry corresponding to the procdef we are handling }
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for entrycount:=0 to cat.vmtentries.Count-1 do
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begin
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vmtpd:=pvmtentry(cat.vmtentries[entrycount])^.procdef;
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vmtvis:=pvmtentry(cat.vmtentries[entrycount])^.visibility;
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{ don't change the vmtentry of the category }
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if found_entry(vmtpd,vmtvis,false) then
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begin
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result:=true;
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exit;
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end;
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end;
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end;
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end;
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begin
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result:=false;
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overridesclasshelper:=false;
|
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{ Load other values for easier readability }
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hasoverloads:=(tprocsym(pd.procsym).ProcdefList.Count>1);
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pdoverload:=(po_overload in pd.procoptions);
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{ compare with all stored definitions }
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for i:=0 to _class.vmtentries.Count-1 do
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begin
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if found_entry(pvmtentry(_class.vmtentries[i])^.procdef, pvmtentry(_class.vmtentries[i])^.visibility,true) then
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exit;
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end;
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|
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{ in case of Objective-C, also check the categories that apply to this
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class' *parent* for methods to override (don't allow class X to
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"override" a method added by a category to class X itself, since in
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that case the category method will in fact replace class X'
|
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"overriding" method }
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if is_objcclass(_class) and
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assigned(_class.childof) and
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search_objc_helper(_class.childof,pd.procsym.name,srsym,st) then
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begin
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overridesclasshelper:=found_category_method(st);
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end;
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{ No entry found, we need to create a new entry }
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result:=true;
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end;
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function TVMTBuilder.intf_search_procdef_by_name(proc: tprocdef;const name: string): tprocdef;
|
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const
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po_comp = [po_classmethod,po_staticmethod,po_interrupt,po_iocheck,po_msgint,
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po_exports,po_varargs,po_explicitparaloc,po_nostackframe];
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var
|
|
implprocdef : Tprocdef;
|
|
i: cardinal;
|
|
hclass : tobjectdef;
|
|
hashedid : THashedIDString;
|
|
srsym : tsym;
|
|
begin
|
|
result:=nil;
|
|
hashedid.id:=name;
|
|
hclass:=_class;
|
|
while assigned(hclass) do
|
|
begin
|
|
srsym:=tsym(hclass.symtable.FindWithHash(hashedid));
|
|
if assigned(srsym) and
|
|
(srsym.typ=procsym) then
|
|
begin
|
|
for i:=0 to Tprocsym(srsym).ProcdefList.Count-1 do
|
|
begin
|
|
implprocdef:=tprocdef(tprocsym(srsym).ProcdefList[i]);
|
|
if (implprocdef.procsym=tprocsym(srsym)) and
|
|
(compare_paras(proc.paras,implprocdef.paras,cp_all,[cpo_ignorehidden,cpo_comparedefaultvalue,cpo_ignoreuniv])>=te_equal) and
|
|
(compare_defs(proc.returndef,implprocdef.returndef,nothingn)>=te_equal) and
|
|
(proc.proccalloption=implprocdef.proccalloption) and
|
|
(proc.proctypeoption=implprocdef.proctypeoption) and
|
|
((proc.procoptions*po_comp)=((implprocdef.procoptions+[po_virtualmethod])*po_comp)) and
|
|
check_msg_str(proc,implprocdef) then
|
|
begin
|
|
result:=implprocdef;
|
|
exit;
|
|
end;
|
|
end;
|
|
end;
|
|
hclass:=hclass.childof;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TVMTBuilder.intf_get_procdefs(ImplIntf:TImplementedInterface;IntfDef:TObjectDef);
|
|
var
|
|
i : longint;
|
|
def : tdef;
|
|
hs,
|
|
prefix,
|
|
mappedname: string;
|
|
implprocdef: tprocdef;
|
|
begin
|
|
prefix:=ImplIntf.IntfDef.symtable.name^+'.';
|
|
for i:=0 to IntfDef.symtable.DefList.Count-1 do
|
|
begin
|
|
def:=tdef(IntfDef.symtable.DefList[i]);
|
|
if assigned(def) and
|
|
(def.typ=procdef) then
|
|
begin
|
|
{ Find implementing procdef
|
|
1. Check for mapped name
|
|
2. Use symbol name, but only if there's no mapping,
|
|
or we're processing ancestor of interface.
|
|
When modifying this code, ensure that webtbs/tw11862, webtbs/tw4950
|
|
and webtbf/tw19591 stay correct. }
|
|
implprocdef:=nil;
|
|
hs:=prefix+tprocdef(def).procsym.name;
|
|
mappedname:=ImplIntf.GetMapping(hs);
|
|
if mappedname<>'' then
|
|
implprocdef:=intf_search_procdef_by_name(tprocdef(def),mappedname);
|
|
if not assigned(implprocdef) then
|
|
if (mappedname='') or (ImplIntf.IntfDef<>IntfDef) then
|
|
implprocdef:=intf_search_procdef_by_name(tprocdef(def),tprocdef(def).procsym.name);
|
|
|
|
{ Add procdef to the implemented interface }
|
|
if assigned(implprocdef) then
|
|
begin
|
|
if (tobjectdef(implprocdef.struct).objecttype<>odt_objcclass) then
|
|
ImplIntf.AddImplProc(implprocdef)
|
|
else
|
|
begin
|
|
{ If no message name has been specified for the method
|
|
in the objcclass, copy it from the protocol
|
|
definition. }
|
|
if not(po_msgstr in tprocdef(def).procoptions) then
|
|
begin
|
|
include(tprocdef(def).procoptions,po_msgstr);
|
|
implprocdef.messageinf.str:=stringdup(tprocdef(def).messageinf.str^);
|
|
end
|
|
else
|
|
begin
|
|
{ If a message name has been specified in the
|
|
objcclass, it has to match the message name in the
|
|
protocol definition. }
|
|
if (implprocdef.messageinf.str^<>tprocdef(def).messageinf.str^) then
|
|
MessagePos2(implprocdef.fileinfo,parser_e_objc_message_name_changed,tprocdef(def).messageinf.str^,implprocdef.messageinf.str^);
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
if (ImplIntf.IType=etStandard) and
|
|
not(po_optional in tprocdef(def).procoptions) then
|
|
MessagePos1(_Class.typesym.fileinfo,sym_e_no_matching_implementation_found,tprocdef(def).fullprocname(false));
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TVMTBuilder.intf_get_procdefs_recursive(ImplIntf:TImplementedInterface;IntfDef:TObjectDef);
|
|
begin
|
|
if assigned(IntfDef.childof) then
|
|
intf_get_procdefs_recursive(ImplIntf,IntfDef.childof);
|
|
intf_get_procdefs(ImplIntf,IntfDef);
|
|
end;
|
|
|
|
|
|
procedure TVMTBuilder.prot_get_procdefs_recursive(ImplProt:TImplementedInterface;ProtDef:TObjectDef);
|
|
var
|
|
i: longint;
|
|
begin
|
|
{ don't check the same protocol twice }
|
|
if handledprotocols.IndexOf(ProtDef)<>-1 then
|
|
exit;
|
|
handledprotocols.add(ProtDef);
|
|
for i:=0 to ProtDef.ImplementedInterfaces.count-1 do
|
|
prot_get_procdefs_recursive(ImplProt,TImplementedInterface(ProtDef.ImplementedInterfaces[i]).intfdef);
|
|
intf_get_procdefs(ImplProt,ProtDef);
|
|
end;
|
|
|
|
|
|
procedure TVMTBuilder.intf_optimize_vtbls;
|
|
type
|
|
tcompintfentry = record
|
|
weight: longint;
|
|
compintf: longint;
|
|
end;
|
|
{ Max 1000 interface in the class header interfaces it's enough imho }
|
|
tcompintfs = array[0..1000] of tcompintfentry;
|
|
pcompintfs = ^tcompintfs;
|
|
tequals = array[0..1000] of longint;
|
|
pequals = ^tequals;
|
|
timpls = array[0..1000] of longint;
|
|
pimpls = ^timpls;
|
|
var
|
|
aequals: pequals;
|
|
compats: pcompintfs;
|
|
impls: pimpls;
|
|
ImplIntfCount,
|
|
w,i,j,k: longint;
|
|
ImplIntfI,
|
|
ImplIntfJ : TImplementedInterface;
|
|
cij: boolean;
|
|
cji: boolean;
|
|
begin
|
|
ImplIntfCount:=_class.ImplementedInterfaces.count;
|
|
if ImplIntfCount>=High(tequals) then
|
|
Internalerror(200006135);
|
|
getmem(compats,sizeof(tcompintfentry)*ImplIntfCount);
|
|
getmem(aequals,sizeof(longint)*ImplIntfCount);
|
|
getmem(impls,sizeof(longint)*ImplIntfCount);
|
|
filldword(compats^,(sizeof(tcompintfentry) div sizeof(dword))*ImplIntfCount,dword(-1));
|
|
filldword(aequals^,ImplIntfCount,dword(-1));
|
|
filldword(impls^,ImplIntfCount,dword(-1));
|
|
{ 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:=0 to ImplIntfCount-1 do
|
|
begin
|
|
for j:=i+1 to ImplIntfCount-1 do
|
|
begin
|
|
ImplIntfI:=TImplementedInterface(_class.ImplementedInterfaces[i]);
|
|
ImplIntfJ:=TImplementedInterface(_class.ImplementedInterfaces[j]);
|
|
cij:=ImplIntfI.IsImplMergePossible(ImplIntfJ,w);
|
|
cji:=ImplIntfJ.IsImplMergePossible(ImplIntfI,w);
|
|
if cij and cji then { i equal j }
|
|
begin
|
|
{ get minimum index of equal }
|
|
if aequals^[j]=-1 then
|
|
aequals^[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:=0 to ImplIntfCount-1 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:=0 to ImplIntfCount-1 do
|
|
begin
|
|
if compats^[impls^[i]].compintf<>-1 then
|
|
impls^[i]:=compats^[impls^[i]].compintf
|
|
else if aequals^[impls^[i]]<>-1 then
|
|
impls^[i]:=aequals^[impls^[i]]
|
|
else
|
|
inc(k);
|
|
end;
|
|
until k=ImplIntfCount;
|
|
{ Update the VtblImplIntf }
|
|
for i:=0 to ImplIntfCount-1 do
|
|
begin
|
|
ImplIntfI:=TImplementedInterface(_class.ImplementedInterfaces[i]);
|
|
ImplIntfI.VtblImplIntf:=TImplementedInterface(_class.ImplementedInterfaces[impls^[i]]);
|
|
end;
|
|
freemem(compats);
|
|
freemem(aequals);
|
|
freemem(impls);
|
|
end;
|
|
|
|
|
|
procedure TVMTBuilder.intf_allocate_vtbls;
|
|
var
|
|
i : longint;
|
|
ImplIntf : TImplementedInterface;
|
|
begin
|
|
{ Allocation vtbl space }
|
|
for i:=0 to _class.ImplementedInterfaces.count-1 do
|
|
begin
|
|
ImplIntf:=TImplementedInterface(_class.ImplementedInterfaces[i]);
|
|
{ if it implements itself and if it's not implemented by delegation }
|
|
if (ImplIntf.VtblImplIntf=ImplIntf) and (ImplIntf.IType=etStandard) then
|
|
begin
|
|
{ allocate a pointer in the object memory }
|
|
with tObjectSymtable(_class.symtable) do
|
|
begin
|
|
datasize:=align(datasize,sizeof(pint));
|
|
ImplIntf.Ioffset:=datasize;
|
|
datasize:=datasize+sizeof(pint);
|
|
end;
|
|
end;
|
|
end;
|
|
{ Update ioffset of current interface with the ioffset from
|
|
the interface that is reused to implements this interface }
|
|
for i:=0 to _class.ImplementedInterfaces.count-1 do
|
|
begin
|
|
ImplIntf:=TImplementedInterface(_class.ImplementedInterfaces[i]);
|
|
if ImplIntf.VtblImplIntf<>ImplIntf then
|
|
ImplIntf.IOffset:=ImplIntf.VtblImplIntf.IOffset;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TVMTBuilder.generate_vmt;
|
|
var
|
|
i : longint;
|
|
def : tdef;
|
|
old_current_structdef : tabstractrecorddef;
|
|
overridesclasshelper : boolean;
|
|
begin
|
|
old_current_structdef:=current_structdef;
|
|
current_structdef:=_class;
|
|
|
|
_class.resetvmtentries;
|
|
|
|
{ inherit (copy) VMT from parent object }
|
|
if assigned(_class.childof) then
|
|
begin
|
|
if not assigned(_class.childof.vmtentries) then
|
|
internalerror(200810281);
|
|
_class.copyvmtentries(_class.childof);
|
|
end;
|
|
|
|
{ process all procdefs, we must process the defs to
|
|
keep the same order as that is written in the source
|
|
to be compatible with the indexes in the interface vtable (PFV) }
|
|
for i:=0 to _class.symtable.DefList.Count-1 do
|
|
begin
|
|
def:=tdef(_class.symtable.DefList[i]);
|
|
if def.typ=procdef then
|
|
begin
|
|
{ VMT entry }
|
|
if is_new_vmt_entry(tprocdef(def),overridesclasshelper) then
|
|
add_new_vmt_entry(tprocdef(def),overridesclasshelper);
|
|
end;
|
|
end;
|
|
build_interface_mappings;
|
|
if assigned(_class.ImplementedInterfaces) and
|
|
not(is_objc_class_or_protocol(_class)) then
|
|
begin
|
|
{ Optimize interface tables to reuse wrappers }
|
|
intf_optimize_vtbls;
|
|
{ Allocate interface tables }
|
|
intf_allocate_vtbls;
|
|
end;
|
|
|
|
current_structdef:=old_current_structdef;
|
|
end;
|
|
|
|
|
|
procedure TVMTBuilder.build_interface_mappings;
|
|
var
|
|
ImplIntf : TImplementedInterface;
|
|
i: longint;
|
|
begin
|
|
{ Find Procdefs implementing the interfaces }
|
|
if assigned(_class.ImplementedInterfaces) and
|
|
(_class.objecttype<>odt_objcprotocol) then
|
|
begin
|
|
{ Collect implementor functions into the tImplementedInterface.procdefs }
|
|
case _class.objecttype of
|
|
odt_class:
|
|
begin
|
|
for i:=0 to _class.ImplementedInterfaces.count-1 do
|
|
begin
|
|
ImplIntf:=TImplementedInterface(_class.ImplementedInterfaces[i]);
|
|
intf_get_procdefs_recursive(ImplIntf,ImplIntf.IntfDef)
|
|
end;
|
|
end;
|
|
odt_objcclass:
|
|
begin
|
|
{ Object Pascal interfaces are afterwards optimized via the
|
|
intf_optimize_vtbls() method, but we can't do this for
|
|
protocols -> check for duplicates here already. }
|
|
handledprotocols:=tfpobjectlist.create(false);
|
|
for i:=0 to _class.ImplementedInterfaces.count-1 do
|
|
begin
|
|
ImplIntf:=TImplementedInterface(_class.ImplementedInterfaces[i]);
|
|
prot_get_procdefs_recursive(ImplIntf,ImplIntf.IntfDef);
|
|
end;
|
|
handledprotocols.free;
|
|
end
|
|
else
|
|
internalerror(2009091801);
|
|
end
|
|
end;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TVMTWriter
|
|
*****************************************************************************}
|
|
|
|
constructor TVMTWriter.create(c:tobjectdef);
|
|
begin
|
|
inherited Create;
|
|
_Class:=c;
|
|
end;
|
|
|
|
|
|
destructor TVMTWriter.destroy;
|
|
begin
|
|
end;
|
|
|
|
|
|
{**************************************
|
|
Message Tables
|
|
**************************************}
|
|
|
|
procedure TVMTWriter.disposeprocdeftree(p : pprocdeftree);
|
|
begin
|
|
if assigned(p^.l) then
|
|
disposeprocdeftree(p^.l);
|
|
if assigned(p^.r) then
|
|
disposeprocdeftree(p^.r);
|
|
dispose(p);
|
|
end;
|
|
|
|
|
|
procedure TVMTWriter.insertint(p : pprocdeftree;var at : pprocdeftree;var count:longint);
|
|
begin
|
|
if at=nil then
|
|
begin
|
|
at:=p;
|
|
inc(count);
|
|
end
|
|
else
|
|
begin
|
|
if p^.data.messageinf.i<at^.data.messageinf.i then
|
|
insertint(p,at^.l,count)
|
|
else if p^.data.messageinf.i>at^.data.messageinf.i then
|
|
insertint(p,at^.r,count)
|
|
else
|
|
Message1(parser_e_duplicate_message_label,tostr(p^.data.messageinf.i));
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TVMTWriter.insertstr(p : pprocdeftree;var at : pprocdeftree;var count:longint);
|
|
var
|
|
i : integer;
|
|
begin
|
|
if at=nil then
|
|
begin
|
|
at:=p;
|
|
inc(count);
|
|
end
|
|
else
|
|
begin
|
|
i:=CompareStr(p^.data.messageinf.str^,at^.data.messageinf.str^);
|
|
if i<0 then
|
|
insertstr(p,at^.l,count)
|
|
else if i>0 then
|
|
insertstr(p,at^.r,count)
|
|
else
|
|
Message1(parser_e_duplicate_message_label,p^.data.messageinf.str^);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TVMTWriter.insertmsgint(p:TObject;arg:pointer);
|
|
var
|
|
i : longint;
|
|
pd : Tprocdef;
|
|
pt : pprocdeftree;
|
|
begin
|
|
if tsym(p).typ<>procsym then
|
|
exit;
|
|
for i:=0 to Tprocsym(p).ProcdefList.Count-1 do
|
|
begin
|
|
pd:=tprocdef(Tprocsym(p).ProcdefList[i]);
|
|
if po_msgint in pd.procoptions then
|
|
begin
|
|
new(pt);
|
|
pt^.data:=pd;
|
|
pt^.l:=nil;
|
|
pt^.r:=nil;
|
|
insertint(pt,root,plongint(arg)^);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TVMTWriter.insertmsgstr(p:TObject;arg:pointer);
|
|
var
|
|
i : longint;
|
|
pd : Tprocdef;
|
|
pt : pprocdeftree;
|
|
begin
|
|
if tsym(p).typ<>procsym then
|
|
exit;
|
|
for i:=0 to Tprocsym(p).ProcdefList.Count-1 do
|
|
begin
|
|
pd:=tprocdef(Tprocsym(p).ProcdefList[i]);
|
|
if po_msgstr in pd.procoptions then
|
|
begin
|
|
new(pt);
|
|
pt^.data:=pd;
|
|
pt^.l:=nil;
|
|
pt^.r:=nil;
|
|
insertstr(pt,root,plongint(arg)^);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TVMTWriter.writenames(p : pprocdeftree);
|
|
var
|
|
ca : pchar;
|
|
len : byte;
|
|
begin
|
|
current_asmdata.getdatalabel(p^.nl);
|
|
if assigned(p^.l) then
|
|
writenames(p^.l);
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(pint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_label.Create(p^.nl));
|
|
len:=length(p^.data.messageinf.str^);
|
|
current_asmdata.asmlists[al_globals].concat(tai_const.create_8bit(len));
|
|
getmem(ca,len+1);
|
|
move(p^.data.messageinf.str^[1],ca^,len);
|
|
ca[len]:=#0;
|
|
current_asmdata.asmlists[al_globals].concat(Tai_string.Create_pchar(ca,len));
|
|
if assigned(p^.r) then
|
|
writenames(p^.r);
|
|
end;
|
|
|
|
procedure TVMTWriter.writestrentry(p : pprocdeftree);
|
|
|
|
begin
|
|
if assigned(p^.l) then
|
|
writestrentry(p^.l);
|
|
|
|
{ write name label }
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(pint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(p^.nl));
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(pint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Createname(p^.data.mangledname,0));
|
|
|
|
if assigned(p^.r) then
|
|
writestrentry(p^.r);
|
|
end;
|
|
|
|
|
|
function TVMTWriter.genstrmsgtab : tasmlabel;
|
|
var
|
|
count : longint;
|
|
begin
|
|
root:=nil;
|
|
count:=0;
|
|
{ insert all message handlers into a tree, sorted by name }
|
|
_class.symtable.SymList.ForEachCall(@insertmsgstr,@count);
|
|
|
|
{ write all names }
|
|
if assigned(root) then
|
|
writenames(root);
|
|
|
|
{ now start writing of the message string table }
|
|
current_asmdata.getdatalabel(result);
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(pint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_label.Create(result));
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(longint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_32bit(count));
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(pint))));
|
|
if assigned(root) then
|
|
begin
|
|
writestrentry(root);
|
|
disposeprocdeftree(root);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TVMTWriter.writeintentry(p : pprocdeftree);
|
|
begin
|
|
if assigned(p^.l) then
|
|
writeintentry(p^.l);
|
|
|
|
{ write name label }
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(longint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_32bit(p^.data.messageinf.i));
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(pint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Createname(p^.data.mangledname,0));
|
|
|
|
if assigned(p^.r) then
|
|
writeintentry(p^.r);
|
|
end;
|
|
|
|
|
|
function TVMTWriter.genintmsgtab : tasmlabel;
|
|
var
|
|
r : tasmlabel;
|
|
count : longint;
|
|
begin
|
|
root:=nil;
|
|
count:=0;
|
|
{ insert all message handlers into a tree, sorted by name }
|
|
_class.symtable.SymList.ForEachCall(@insertmsgint,@count);
|
|
|
|
{ now start writing of the message string table }
|
|
current_asmdata.getdatalabel(r);
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(pint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_label.Create(r));
|
|
genintmsgtab:=r;
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(longint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_32bit(count));
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(pint))));
|
|
if assigned(root) then
|
|
begin
|
|
writeintentry(root);
|
|
disposeprocdeftree(root);
|
|
end;
|
|
end;
|
|
|
|
{$ifdef WITHDMT}
|
|
|
|
{**************************************
|
|
DMT
|
|
**************************************}
|
|
|
|
procedure TVMTWriter.insertdmtentry(p:TObject;arg:pointer);
|
|
|
|
var
|
|
hp : tprocdef;
|
|
pt : pprocdeftree;
|
|
|
|
begin
|
|
if tsym(p).typ=procsym then
|
|
begin
|
|
hp:=tprocsym(p).definition;
|
|
while assigned(hp) do
|
|
begin
|
|
if (po_msgint in hp.procoptions) then
|
|
begin
|
|
new(pt);
|
|
pt^.p:=hp;
|
|
pt^.l:=nil;
|
|
pt^.r:=nil;
|
|
insertint(pt,root);
|
|
end;
|
|
hp:=hp.nextoverloaded;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TVMTWriter.writedmtindexentry(p : pprocdeftree);
|
|
|
|
begin
|
|
if assigned(p^.l) then
|
|
writedmtindexentry(p^.l);
|
|
al_globals.concat(Tai_const.Create_32bit(p^.data.messageinf.i));
|
|
if assigned(p^.r) then
|
|
writedmtindexentry(p^.r);
|
|
end;
|
|
|
|
procedure TVMTWriter.writedmtaddressentry(p : pprocdeftree);
|
|
|
|
begin
|
|
if assigned(p^.l) then
|
|
writedmtaddressentry(p^.l);
|
|
al_globals.concat(Tai_const_symbol.Createname(p^.data.mangledname,0));
|
|
if assigned(p^.r) then
|
|
writedmtaddressentry(p^.r);
|
|
end;
|
|
|
|
function TVMTWriter.gendmt : tasmlabel;
|
|
|
|
var
|
|
r : tasmlabel;
|
|
|
|
begin
|
|
root:=nil;
|
|
count:=0;
|
|
gendmt:=nil;
|
|
{ insert all message handlers into a tree, sorted by number }
|
|
_class.symtable.SymList.ForEachCall(insertdmtentry);
|
|
|
|
if count>0 then
|
|
begin
|
|
current_asmdata.getdatalabel(r);
|
|
gendmt:=r;
|
|
al_globals.concat(cai_align.create(const_align(sizeof(pint))));
|
|
al_globals.concat(Tai_label.Create(r));
|
|
{ entries for caching }
|
|
al_globals.concat(Tai_const.Create_ptr(0));
|
|
al_globals.concat(Tai_const.Create_ptr(0));
|
|
|
|
al_globals.concat(Tai_const.Create_32bit(count));
|
|
if assigned(root) then
|
|
begin
|
|
writedmtindexentry(root);
|
|
writedmtaddressentry(root);
|
|
disposeprocdeftree(root);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
{$endif WITHDMT}
|
|
|
|
{**************************************
|
|
Published Methods
|
|
**************************************}
|
|
|
|
procedure TVMTWriter.do_count_published_methods(p:TObject;arg:pointer);
|
|
var
|
|
i : longint;
|
|
pd : tprocdef;
|
|
begin
|
|
if (tsym(p).typ<>procsym) then
|
|
exit;
|
|
for i:=0 to Tprocsym(p).ProcdefList.Count-1 do
|
|
begin
|
|
pd:=tprocdef(Tprocsym(p).ProcdefList[i]);
|
|
if (pd.procsym=tsym(p)) and
|
|
(pd.visibility=vis_published) then
|
|
inc(plongint(arg)^);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TVMTWriter.do_gen_published_methods(p:TObject;arg:pointer);
|
|
var
|
|
i : longint;
|
|
l : tasmlabel;
|
|
pd : tprocdef;
|
|
begin
|
|
if (tsym(p).typ<>procsym) then
|
|
exit;
|
|
for i:=0 to Tprocsym(p).ProcdefList.Count-1 do
|
|
begin
|
|
pd:=tprocdef(Tprocsym(p).ProcdefList[i]);
|
|
if (pd.procsym=tsym(p)) and
|
|
(pd.visibility=vis_published) then
|
|
begin
|
|
current_asmdata.getdatalabel(l);
|
|
new_section(current_asmdata.asmlists[al_typedconsts],sec_rodata_norel,l.name,const_align(sizeof(pint)));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(l));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_8bit(length(tsym(p).realname)));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_string.Create(tsym(p).realname));
|
|
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(l));
|
|
if po_abstractmethod in pd.procoptions then
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil))
|
|
else
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Createname(pd.mangledname,0));
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
function TVMTWriter.genpublishedmethodstable : tasmlabel;
|
|
|
|
var
|
|
l : tasmlabel;
|
|
count : longint;
|
|
|
|
begin
|
|
count:=0;
|
|
_class.symtable.SymList.ForEachCall(@do_count_published_methods,@count);
|
|
if count>0 then
|
|
begin
|
|
current_asmdata.getdatalabel(l);
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(pint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_label.Create(l));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_32bit(count));
|
|
_class.symtable.SymList.ForEachCall(@do_gen_published_methods,nil);
|
|
genpublishedmethodstable:=l;
|
|
end
|
|
else
|
|
genpublishedmethodstable:=nil;
|
|
end;
|
|
|
|
|
|
function TVMTWriter.generate_field_table : tasmlabel;
|
|
var
|
|
i : longint;
|
|
sym : tsym;
|
|
fieldtable,
|
|
classtable : tasmlabel;
|
|
classindex,
|
|
fieldcount : longint;
|
|
classtablelist : TFPList;
|
|
begin
|
|
classtablelist:=TFPList.Create;
|
|
current_asmdata.getdatalabel(fieldtable);
|
|
current_asmdata.getdatalabel(classtable);
|
|
maybe_new_object_file(current_asmdata.asmlists[al_rtti]);
|
|
new_section(current_asmdata.asmlists[al_rtti],sec_rodata,classtable.name,const_align(sizeof(pint)));
|
|
|
|
{ retrieve field info fields }
|
|
fieldcount:=0;
|
|
for i:=0 to _class.symtable.SymList.Count-1 do
|
|
begin
|
|
sym:=tsym(_class.symtable.SymList[i]);
|
|
if (sym.typ=fieldvarsym) and
|
|
(sym.visibility=vis_published) then
|
|
begin
|
|
if tfieldvarsym(sym).vardef.typ<>objectdef then
|
|
internalerror(200611032);
|
|
classindex:=classtablelist.IndexOf(tfieldvarsym(sym).vardef);
|
|
if classindex=-1 then
|
|
classtablelist.Add(tfieldvarsym(sym).vardef);
|
|
inc(fieldcount);
|
|
end;
|
|
end;
|
|
|
|
{ write fields }
|
|
current_asmdata.asmlists[al_rtti].concat(Tai_label.Create(fieldtable));
|
|
current_asmdata.asmlists[al_rtti].concat(Tai_const.Create_16bit(fieldcount));
|
|
if (tf_requires_proper_alignment in target_info.flags) then
|
|
current_asmdata.asmlists[al_rtti].concat(cai_align.Create(sizeof(TConstPtrUInt)));
|
|
current_asmdata.asmlists[al_rtti].concat(Tai_const.Create_sym(classtable));
|
|
for i:=0 to _class.symtable.SymList.Count-1 do
|
|
begin
|
|
sym:=tsym(_class.symtable.SymList[i]);
|
|
if (sym.typ=fieldvarsym) and
|
|
(sym.visibility=vis_published) then
|
|
begin
|
|
if (tf_requires_proper_alignment in target_info.flags) then
|
|
current_asmdata.asmlists[al_rtti].concat(cai_align.Create(sizeof(pint)));
|
|
current_asmdata.asmlists[al_rtti].concat(Tai_const.Create_pint(tfieldvarsym(sym).fieldoffset));
|
|
classindex:=classtablelist.IndexOf(tfieldvarsym(sym).vardef);
|
|
if classindex=-1 then
|
|
internalerror(200611033);
|
|
current_asmdata.asmlists[al_rtti].concat(Tai_const.Create_16bit(classindex+1));
|
|
current_asmdata.asmlists[al_rtti].concat(Tai_const.Create_8bit(length(tfieldvarsym(sym).realname)));
|
|
current_asmdata.asmlists[al_rtti].concat(Tai_string.Create(tfieldvarsym(sym).realname));
|
|
end;
|
|
end;
|
|
|
|
{ generate the class table }
|
|
current_asmdata.asmlists[al_rtti].concat(cai_align.create(const_align(sizeof(pint))));
|
|
current_asmdata.asmlists[al_rtti].concat(Tai_label.Create(classtable));
|
|
current_asmdata.asmlists[al_rtti].concat(Tai_const.Create_16bit(classtablelist.count));
|
|
if (tf_requires_proper_alignment in target_info.flags) then
|
|
current_asmdata.asmlists[al_rtti].concat(cai_align.Create(sizeof(TConstPtrUInt)));
|
|
for i:=0 to classtablelist.Count-1 do
|
|
current_asmdata.asmlists[al_rtti].concat(Tai_const.Createname(tobjectdef(classtablelist[i]).vmt_mangledname,0));
|
|
|
|
classtablelist.free;
|
|
result:=fieldtable;
|
|
end;
|
|
|
|
|
|
{**************************************
|
|
Interface tables
|
|
**************************************}
|
|
|
|
function TVMTWriter.intf_get_vtbl_name(AImplIntf:TImplementedInterface): string;
|
|
begin
|
|
result:=make_mangledname('VTBL',_class.owner,_class.objname^+'_$_'+AImplIntf.IntfDef.objname^);
|
|
end;
|
|
|
|
|
|
procedure TVMTWriter.intf_create_vtbl(rawdata: TAsmList;AImplIntf:TImplementedInterface);
|
|
var
|
|
pd : tprocdef;
|
|
vtblstr,
|
|
hs : string;
|
|
i : longint;
|
|
begin
|
|
vtblstr:=intf_get_vtbl_name(AImplIntf);
|
|
section_symbol_start(rawdata,vtblstr,AT_DATA,true,sec_data,const_align(sizeof(pint)));
|
|
if assigned(AImplIntf.procdefs) then
|
|
begin
|
|
for i:=0 to AImplIntf.procdefs.count-1 do
|
|
begin
|
|
pd:=tprocdef(AImplIntf.procdefs[i]);
|
|
hs:=make_mangledname('WRPR',_class.owner,_class.objname^+'_$_'+AImplIntf.IntfDef.objname^+'_$_'+
|
|
tostr(i)+'_$_'+pd.mangledname);
|
|
{ create reference }
|
|
rawdata.concat(Tai_const.Createname(hs,0));
|
|
end;
|
|
end;
|
|
section_symbol_end(rawdata,vtblstr);
|
|
end;
|
|
|
|
|
|
procedure TVMTWriter.intf_gen_intf_ref(rawdata: TAsmList;AImplIntf:TImplementedInterface);
|
|
var
|
|
iidlabel,
|
|
guidlabel : tasmlabel;
|
|
i: longint;
|
|
pd: tprocdef;
|
|
begin
|
|
{ GUID }
|
|
if AImplIntf.IntfDef.objecttype in [odt_interfacecom] then
|
|
begin
|
|
{ label for GUID }
|
|
current_asmdata.getdatalabel(guidlabel);
|
|
rawdata.concat(cai_align.create(const_align(sizeof(pint))));
|
|
rawdata.concat(Tai_label.Create(guidlabel));
|
|
with AImplIntf.IntfDef.iidguid^ do
|
|
begin
|
|
rawdata.concat(Tai_const.Create_32bit(longint(D1)));
|
|
rawdata.concat(Tai_const.Create_16bit(D2));
|
|
rawdata.concat(Tai_const.Create_16bit(D3));
|
|
for i:=Low(D4) to High(D4) do
|
|
rawdata.concat(Tai_const.Create_8bit(D4[i]));
|
|
end;
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(guidlabel));
|
|
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(intf_get_vtbl_name(AImplIntf.VtblImplIntf),0));
|
|
{ IOffset field }
|
|
case AImplIntf.VtblImplIntf.IType of
|
|
etFieldValue, etFieldValueClass,
|
|
etStandard:
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_pint(AImplIntf.VtblImplIntf.IOffset));
|
|
etStaticMethodResult, etStaticMethodClass:
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Createname(
|
|
tprocdef(tpropertysym(AImplIntf.ImplementsGetter).propaccesslist[palt_read].procdef).mangledname,
|
|
0
|
|
));
|
|
etVirtualMethodResult, etVirtualMethodClass:
|
|
begin
|
|
pd := tprocdef(tpropertysym(AImplIntf.ImplementsGetter).propaccesslist[palt_read].procdef);
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_pint(tobjectdef(pd.struct).vmtmethodoffset(pd.extnumber)));
|
|
end;
|
|
else
|
|
internalerror(200802162);
|
|
end;
|
|
|
|
{ IIDStr }
|
|
current_asmdata.getdatalabel(iidlabel);
|
|
rawdata.concat(cai_align.create(const_align(sizeof(pint))));
|
|
rawdata.concat(Tai_label.Create(iidlabel));
|
|
rawdata.concat(Tai_const.Create_8bit(length(AImplIntf.IntfDef.iidstr^)));
|
|
if AImplIntf.IntfDef.objecttype=odt_interfacecom then
|
|
rawdata.concat(Tai_string.Create(upper(AImplIntf.IntfDef.iidstr^)))
|
|
else
|
|
rawdata.concat(Tai_string.Create(AImplIntf.IntfDef.iidstr^));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(iidlabel));
|
|
{ IType }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_pint(aint(AImplIntf.VtblImplIntf.IType)));
|
|
end;
|
|
|
|
|
|
function TVMTWriter.intf_write_table:TAsmLabel;
|
|
var
|
|
rawdata : TAsmList;
|
|
i : longint;
|
|
ImplIntf : TImplementedInterface;
|
|
intftablelab : tasmlabel;
|
|
begin
|
|
current_asmdata.getdatalabel(intftablelab);
|
|
current_asmdata.asmlists[al_globals].concat(cai_align.create(const_align(sizeof(pint))));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_label.Create(intftablelab));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_pint(_class.ImplementedInterfaces.count));
|
|
rawdata:=TAsmList.Create;
|
|
{ Write vtbls }
|
|
for i:=0 to _class.ImplementedInterfaces.count-1 do
|
|
begin
|
|
ImplIntf:=TImplementedInterface(_class.ImplementedInterfaces[i]);
|
|
if ImplIntf.VtblImplIntf=ImplIntf then
|
|
intf_create_vtbl(rawdata,ImplIntf);
|
|
end;
|
|
{ Write vtbl references }
|
|
for i:=0 to _class.ImplementedInterfaces.count-1 do
|
|
begin
|
|
ImplIntf:=TImplementedInterface(_class.ImplementedInterfaces[i]);
|
|
intf_gen_intf_ref(rawdata,ImplIntf);
|
|
end;
|
|
{ Write interface table }
|
|
current_asmdata.asmlists[al_globals].concatlist(rawdata);
|
|
rawdata.free;
|
|
result:=intftablelab;
|
|
end;
|
|
|
|
|
|
{ Write interface identifiers to the data section }
|
|
procedure TVMTWriter.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(pint)));
|
|
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 TVMTWriter.writevirtualmethods(List:TAsmList);
|
|
var
|
|
vmtpd : tprocdef;
|
|
vmtentry : pvmtentry;
|
|
i : longint;
|
|
procname : string;
|
|
{$ifdef vtentry}
|
|
hs : string;
|
|
{$endif vtentry}
|
|
begin
|
|
if not assigned(_class.VMTEntries) then
|
|
exit;
|
|
for i:=0 to _class.VMTEntries.Count-1 do
|
|
begin
|
|
vmtentry:=pvmtentry(_class.vmtentries[i]);
|
|
vmtpd:=vmtentry^.procdef;
|
|
{ safety checks }
|
|
if not(po_virtualmethod in vmtpd.procoptions) then
|
|
internalerror(200611082);
|
|
if vmtpd.extnumber<>i then
|
|
internalerror(200611083);
|
|
if (po_abstractmethod in vmtpd.procoptions) then
|
|
procname:='FPC_ABSTRACTERROR'
|
|
else if not wpoinfomanager.optimized_name_for_vmt(_class,vmtpd,procname) then
|
|
procname:=vmtpd.mangledname;
|
|
List.concat(Tai_const.createname(procname,0));
|
|
{$ifdef vtentry}
|
|
hs:='VTENTRY'+'_'+_class.vmt_mangledname+'$$'+tostr(_class.vmtmethodoffset(i) div sizeof(pint));
|
|
current_asmdata.asmlists[al_globals].concat(tai_symbol.CreateName(hs,AT_DATA,0));
|
|
{$endif vtentry}
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TVMTWriter.writevmt;
|
|
var
|
|
methodnametable,intmessagetable,
|
|
strmessagetable,classnamelabel,
|
|
fieldtablelabel : tasmlabel;
|
|
hs: string;
|
|
{$ifdef WITHDMT}
|
|
dmtlabel : tasmlabel;
|
|
{$endif WITHDMT}
|
|
interfacetable : tasmlabel;
|
|
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(pint)));
|
|
|
|
{ interface table }
|
|
if _class.ImplementedInterfaces.count>0 then
|
|
interfacetable:=intf_write_table;
|
|
|
|
methodnametable:=genpublishedmethodstable;
|
|
fieldtablelabel:=generate_field_table;
|
|
{ write class name }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_label.Create(classnamelabel));
|
|
hs:=_class.RttiName;
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_8bit(length(hs)));
|
|
current_asmdata.asmlists[al_globals].concat(Tai_string.Create(hs));
|
|
|
|
{ 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(pint)));
|
|
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 }
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(RTTIWriter.get_rtti_label(_class,fullrtti)));
|
|
{ inittable for con-/destruction }
|
|
if _class.members_need_inittable then
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(RTTIWriter.get_rtti_label(_class,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 if _class.implements_any_interfaces then
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(nil))
|
|
else
|
|
current_asmdata.asmlists[al_globals].concat(Tai_const.Create_sym(current_asmdata.RefAsmSymbol('FPC_EMPTYINTF')));
|
|
{ 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));
|
|
{$ifdef vtentry}
|
|
{ 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));
|
|
{$endif vtentry}
|
|
end;
|
|
|
|
|
|
end.
|