mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-05-04 06:03:42 +02:00
0cfc6e1cac
passing any value to that parameter which has the same size as the
parameter (it basically acts as if there is an explicit type conversion
to the parameter type around the value at the caller side). If a procvar
has an univ parameter, all procvars whose corresponding parameter
has the same size as that univ parameter are similarly compatible.
This transparent compatibility can however cause crashes in case of
of the procvars when one of the types is passed on the stack and the
other isn't (because then the called routine will a) load the parameter
from a wrong location and b) pop the wrong amount off of the stack at
then end). Therefore FPC will warn in most cases where this can happen.
(mantis #15777)
git-svn-id: trunk@15010 -
1516 lines
60 KiB
ObjectPascal
1516 lines
60 KiB
ObjectPascal
{
|
|
Copyright (c) 1998-2002 by Florian Klaempfl
|
|
|
|
Routines for the code generation of data structures
|
|
like VMT, Messages, VTables, Interfaces descs
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
****************************************************************************
|
|
}
|
|
unit nobj;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
cutils,cclasses,
|
|
globtype,
|
|
symdef,symsym,
|
|
aasmbase,aasmtai,aasmdata
|
|
;
|
|
|
|
type
|
|
TVMTBuilder=class
|
|
private
|
|
_Class : tobjectdef;
|
|
handledprotocols: tfpobjectlist;
|
|
function is_new_vmt_entry(pd:tprocdef):boolean;
|
|
procedure add_new_vmt_entry(pd:tprocdef);
|
|
function check_msg_str(vmtpd, pd: tprocdef):boolean;
|
|
function intf_search_procdef_by_name(proc: tprocdef;const name: string): tprocdef;
|
|
procedure intf_get_procdefs(ImplIntf:TImplementedInterface;IntfDef:TObjectDef);
|
|
procedure intf_get_procdefs_recursive(ImplIntf:TImplementedInterface;IntfDef:TObjectDef);
|
|
procedure prot_get_procdefs_recursive(ImplProt:TImplementedInterface;ProtDef:TObjectDef);
|
|
procedure intf_optimize_vtbls;
|
|
procedure intf_allocate_vtbls;
|
|
public
|
|
constructor create(c:tobjectdef);
|
|
destructor destroy;override;
|
|
procedure generate_vmt;
|
|
procedure build_interface_mappings;
|
|
end;
|
|
|
|
type
|
|
pprocdeftree = ^tprocdeftree;
|
|
tprocdeftree = record
|
|
data : tprocdef;
|
|
nl : tasmlabel;
|
|
l,r : pprocdeftree;
|
|
end;
|
|
|
|
TVMTWriter=class
|
|
private
|
|
_Class : tobjectdef;
|
|
{ message tables }
|
|
root : pprocdeftree;
|
|
procedure disposeprocdeftree(p : pprocdeftree);
|
|
procedure insertmsgint(p:TObject;arg:pointer);
|
|
procedure insertmsgstr(p:TObject;arg:pointer);
|
|
procedure insertint(p : pprocdeftree;var at : pprocdeftree;var count:longint);
|
|
procedure insertstr(p : pprocdeftree;var at : pprocdeftree;var count:longint);
|
|
procedure writenames(p : pprocdeftree);
|
|
procedure writeintentry(p : pprocdeftree);
|
|
procedure writestrentry(p : pprocdeftree);
|
|
{$ifdef WITHDMT}
|
|
{ dmt }
|
|
procedure insertdmtentry(p:TObject;arg:pointer);
|
|
procedure writedmtindexentry(p : pprocdeftree);
|
|
procedure writedmtaddressentry(p : pprocdeftree);
|
|
{$endif}
|
|
{ published methods }
|
|
procedure do_count_published_methods(p:TObject;arg:pointer);
|
|
procedure do_gen_published_methods(p:TObject;arg:pointer);
|
|
{ virtual methods }
|
|
procedure writevirtualmethods(List:TAsmList);
|
|
{ interface tables }
|
|
function intf_get_vtbl_name(AImplIntf:TImplementedInterface): string;
|
|
procedure intf_create_vtbl(rawdata: TAsmList;AImplIntf:TImplementedInterface);
|
|
procedure intf_gen_intf_ref(rawdata: TAsmList;AImplIntf:TImplementedInterface);
|
|
function intf_write_table:TAsmLabel;
|
|
{ generates the message tables for a class }
|
|
function genstrmsgtab : tasmlabel;
|
|
function genintmsgtab : tasmlabel;
|
|
function genpublishedmethodstable : tasmlabel;
|
|
function generate_field_table : tasmlabel;
|
|
{$ifdef WITHDMT}
|
|
{ generates a DMT for _class }
|
|
function gendmt : tasmlabel;
|
|
{$endif WITHDMT}
|
|
public
|
|
constructor create(c:tobjectdef);
|
|
destructor destroy;override;
|
|
{ write the VMT to al_globals }
|
|
procedure writevmt;
|
|
procedure writeinterfaceids;
|
|
end;
|
|
|
|
implementation
|
|
|
|
uses
|
|
SysUtils,
|
|
globals,verbose,systems,
|
|
node,
|
|
symbase,symtable,symconst,symtype,defcmp,
|
|
dbgbase,
|
|
ncgrtti,
|
|
wpobase
|
|
;
|
|
|
|
|
|
{*****************************************************************************
|
|
TVMTBuilder
|
|
*****************************************************************************}
|
|
|
|
constructor TVMTBuilder.create(c:tobjectdef);
|
|
begin
|
|
inherited Create;
|
|
_Class:=c;
|
|
end;
|
|
|
|
|
|
destructor TVMTBuilder.destroy;
|
|
begin
|
|
end;
|
|
|
|
|
|
procedure TVMTBuilder.add_new_vmt_entry(pd:tprocdef);
|
|
var
|
|
i : longint;
|
|
vmtentry : pvmtentry;
|
|
vmtpd : tprocdef;
|
|
begin
|
|
{ new entry is needed, override was not possible }
|
|
if (po_overridingmethod in pd.procoptions) then
|
|
MessagePos1(pd.fileinfo,parser_e_nothing_to_be_overridden,pd.fullprocname(false));
|
|
|
|
{ check that all methods have overload directive }
|
|
if not(m_fpc in current_settings.modeswitches) then
|
|
begin
|
|
for i:=0 to _class.vmtentries.count-1 do
|
|
begin
|
|
vmtentry:=pvmtentry(_class.vmtentries[i]);
|
|
vmtpd:=tprocdef(vmtentry^.procdef);
|
|
if (vmtpd.procsym=pd.procsym) and
|
|
(not(po_overload in pd.procoptions) or
|
|
not(po_overload in vmtpd.procoptions)) then
|
|
begin
|
|
MessagePos1(pd.fileinfo,parser_e_no_overload_for_all_procs,pd.procsym.realname);
|
|
{ recover }
|
|
include(vmtpd.procoptions,po_overload);
|
|
include(pd.procoptions,po_overload);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
{ Register virtual method and give it a number }
|
|
if (po_virtualmethod in pd.procoptions) then
|
|
begin
|
|
{ store vmt entry number in procdef }
|
|
if (pd.extnumber<>$ffff) and
|
|
(pd.extnumber<>_class.VMTEntries.Count) then
|
|
internalerror(200810283);
|
|
pd.extnumber:=_class.VMTEntries.Count;
|
|
new(vmtentry);
|
|
vmtentry^.procdef:=pd;
|
|
vmtentry^.procdefderef.reset;
|
|
vmtentry^.visibility:=pd.visibility;
|
|
_class.VMTEntries.Add(vmtentry);
|
|
end;
|
|
end;
|
|
|
|
|
|
function TVMTBuilder.check_msg_str(vmtpd, pd: tprocdef): boolean;
|
|
begin
|
|
result:=true;
|
|
if not(is_objc_class_or_protocol(_class)) then
|
|
begin
|
|
{ the only requirement for normal methods is that both either
|
|
have a message string or not (the value is irrelevant) }
|
|
if ((pd.procoptions * [po_msgstr]) <> (vmtpd.procoptions * [po_msgstr])) then
|
|
begin
|
|
MessagePos1(pd.fileinfo,parser_e_header_dont_match_forward,pd.fullprocname(false));
|
|
tprocsym(vmtpd.procsym).write_parameter_lists(pd);
|
|
result:=false;
|
|
end
|
|
end
|
|
else
|
|
begin
|
|
{ the compiler should have ensured that the protocol or parent
|
|
class method has a message name specified }
|
|
if not(po_msgstr in vmtpd.procoptions) then
|
|
internalerror(2009070601);
|
|
if not(po_msgstr in pd.procoptions) then
|
|
begin
|
|
{ copy the protocol's/parent class' message name to the one in
|
|
the class if none has been specified there }
|
|
include(pd.procoptions,po_msgstr);
|
|
pd.messageinf.str:=stringdup(vmtpd.messageinf.str^);
|
|
end
|
|
else
|
|
begin
|
|
{ if both have a message name, make sure they are equal }
|
|
if (vmtpd.messageinf.str^<>pd.messageinf.str^) then
|
|
begin
|
|
MessagePos2(pd.fileinfo,parser_e_objc_message_name_changed,vmtpd.messageinf.str^,pd.messageinf.str^);
|
|
result:=false;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
function TVMTBuilder.is_new_vmt_entry(pd:tprocdef):boolean;
|
|
const
|
|
po_comp = [po_classmethod,po_virtualmethod,po_staticmethod,po_interrupt,po_iocheck,po_msgint,
|
|
po_exports,po_varargs,po_explicitparaloc,po_nostackframe];
|
|
var
|
|
i : longint;
|
|
hasequalpara,
|
|
hasoverloads,
|
|
pdoverload : boolean;
|
|
vmtentry : pvmtentry;
|
|
vmtpd : tprocdef;
|
|
begin
|
|
result:=false;
|
|
{ Load other values for easier readability }
|
|
hasoverloads:=(tprocsym(pd.procsym).ProcdefList.Count>1);
|
|
pdoverload:=(po_overload in pd.procoptions);
|
|
|
|
{ compare with all stored definitions }
|
|
for i:=0 to _class.vmtentries.Count-1 do
|
|
begin
|
|
vmtentry:=pvmtentry(_class.vmtentries[i]);
|
|
vmtpd:=tprocdef(vmtentry^.procdef);
|
|
|
|
{ ignore hidden entries (e.g. virtual overridden by a static) that are not visible anymore }
|
|
if vmtentry^.visibility=vis_hidden then
|
|
continue;
|
|
|
|
{ ignore different names }
|
|
if vmtpd.procsym.name<>pd.procsym.name then
|
|
continue;
|
|
|
|
{ hide private methods that are not visible anymore. For this check we
|
|
must override the visibility with the highest value in the override chain.
|
|
This is required for case (see tw3292) with protected-private-protected where the
|
|
same vmtentry is used (PFV) }
|
|
if not is_visible_for_object(vmtpd.owner,vmtentry^.visibility,_class) then
|
|
continue;
|
|
|
|
{ inherit overload }
|
|
if (po_overload in vmtpd.procoptions) then
|
|
begin
|
|
include(pd.procoptions,po_overload);
|
|
pdoverload:=true;
|
|
end;
|
|
|
|
{ compare parameter types only, no specifiers yet }
|
|
hasequalpara:=(compare_paras(vmtpd.paras,pd.paras,cp_none,[cpo_ignoreuniv])>=te_equal);
|
|
|
|
{ check that we are not trying to override a final method }
|
|
if (po_finalmethod in vmtpd.procoptions) and
|
|
hasequalpara and (po_overridingmethod in pd.procoptions) and is_class(_class) then
|
|
MessagePos1(pd.fileinfo,parser_e_final_can_no_be_overridden,pd.fullprocname(false))
|
|
else
|
|
{ old definition has virtual
|
|
new definition has no virtual or override }
|
|
if (po_virtualmethod in vmtpd.procoptions) and
|
|
(
|
|
not(po_virtualmethod in pd.procoptions) or
|
|
(
|
|
{ new one does not have reintroduce in case of an objccategory }
|
|
(is_objccategory(_class) and not(po_reintroduce in pd.procoptions)) or
|
|
{ new one does not have override in case of objpas/objc class/intf/proto }
|
|
(is_class_or_interface_or_objc(_class) and not is_objccategory(_class) and not(po_overridingmethod in pd.procoptions))
|
|
)
|
|
) then
|
|
begin
|
|
if (
|
|
not(pdoverload or hasoverloads) or
|
|
hasequalpara
|
|
) then
|
|
begin
|
|
if not(po_reintroduce in pd.procoptions) then
|
|
if not(is_objc_class_or_protocol(_class)) then
|
|
MessagePos1(pd.fileinfo,parser_w_should_use_override,pd.fullprocname(false))
|
|
else
|
|
begin
|
|
{ In Objective-C, you cannot create a new VMT entry to
|
|
start a new inheritance tree. We therefore give an
|
|
error when the class is implemented in Pascal, to
|
|
avoid confusion due to things working differently
|
|
with Object Pascal classes.
|
|
|
|
In case of external classes, we only give a hint,
|
|
because requiring override everywhere may make
|
|
automated header translation tools too complex. }
|
|
if not(oo_is_external in _class.objectoptions) then
|
|
if not is_objccategory(_class) then
|
|
MessagePos1(pd.fileinfo,parser_e_must_use_override_objc,pd.fullprocname(false))
|
|
else
|
|
MessagePos1(pd.fileinfo,parser_e_must_use_reintroduce_objc,pd.fullprocname(false))
|
|
{ there may be a lot of these in auto-translated
|
|
heaeders, so only calculate the fullprocname if
|
|
the hint will be shown }
|
|
else if CheckVerbosity(V_Hint) then
|
|
if not is_objccategory(_class) then
|
|
MessagePos1(pd.fileinfo,parser_h_should_use_override_objc,pd.fullprocname(false))
|
|
else
|
|
MessagePos1(pd.fileinfo,parser_h_should_use_reintroduce_objc,pd.fullprocname(false));
|
|
{ no new entry, but copy the message name if any from
|
|
the procdef in the parent class }
|
|
check_msg_str(vmtpd,pd);
|
|
exit;
|
|
end;
|
|
{ disable/hide old VMT entry }
|
|
vmtentry^.visibility:=vis_hidden;
|
|
end;
|
|
end
|
|
{ both are virtual? }
|
|
else if (po_virtualmethod in pd.procoptions) and
|
|
(po_virtualmethod in vmtpd.procoptions) then
|
|
begin
|
|
{ same parameter and return types (parameter specifiers will be checked below) }
|
|
if hasequalpara and
|
|
compatible_childmethod_resultdef(vmtpd.returndef,pd.returndef) then
|
|
begin
|
|
{ inherite calling convention when it was explicit and the
|
|
current definition has none explicit set }
|
|
if (po_hascallingconvention in vmtpd.procoptions) and
|
|
not(po_hascallingconvention in pd.procoptions) then
|
|
begin
|
|
pd.proccalloption:=vmtpd.proccalloption;
|
|
include(pd.procoptions,po_hascallingconvention);
|
|
end;
|
|
|
|
{ All parameter specifiers and some procedure the flags have to match
|
|
except abstract and override }
|
|
if (compare_paras(vmtpd.paras,pd.paras,cp_all,[cpo_ignoreuniv])<te_equal) or
|
|
(vmtpd.proccalloption<>pd.proccalloption) or
|
|
(vmtpd.proctypeoption<>pd.proctypeoption) or
|
|
((vmtpd.procoptions*po_comp)<>(pd.procoptions*po_comp)) then
|
|
begin
|
|
MessagePos1(pd.fileinfo,parser_e_header_dont_match_forward,pd.fullprocname(false));
|
|
tprocsym(vmtpd.procsym).write_parameter_lists(pd);
|
|
end;
|
|
|
|
check_msg_str(vmtpd,pd);
|
|
|
|
{ Give a note if the new visibility is lower. For a higher
|
|
visibility update the vmt info }
|
|
if vmtentry^.visibility>pd.visibility then
|
|
MessagePos4(pd.fileinfo,parser_n_ignore_lower_visibility,pd.fullprocname(false),
|
|
visibilityname[pd.visibility],tobjectdef(vmtpd.owner.defowner).objrealname^,visibilityname[vmtentry^.visibility])
|
|
else if pd.visibility>vmtentry^.visibility then
|
|
vmtentry^.visibility:=pd.visibility;
|
|
|
|
{ override old virtual method in VMT }
|
|
if (vmtpd.extnumber<>i) then
|
|
internalerror(200611084);
|
|
pd.extnumber:=vmtpd.extnumber;
|
|
vmtentry^.procdef:=pd;
|
|
exit;
|
|
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 or hasoverloads) then
|
|
begin
|
|
if not(po_reintroduce in pd.procoptions) then
|
|
begin
|
|
if not is_object(_class) and
|
|
not is_objc_class_or_protocol(_class) then
|
|
MessagePos1(pd.fileinfo,parser_w_should_use_override,pd.fullprocname(false))
|
|
else
|
|
{ objects don't allow starting a new virtual tree
|
|
and neither does Objective-C }
|
|
MessagePos1(pd.fileinfo,parser_e_header_dont_match_forward,vmtpd.fullprocname(false));
|
|
end;
|
|
{ disable/hide old VMT entry }
|
|
vmtentry^.visibility:=vis_hidden;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
{ No entry found, we need to create a new entry }
|
|
result:=true;
|
|
end;
|
|
|
|
|
|
function TVMTBuilder.intf_search_procdef_by_name(proc: tprocdef;const name: string): tprocdef;
|
|
const
|
|
po_comp = [po_classmethod,po_staticmethod,po_interrupt,po_iocheck,po_msgint,
|
|
po_exports,po_varargs,po_explicitparaloc,po_nostackframe];
|
|
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 }
|
|
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
|
|
implprocdef:=intf_search_procdef_by_name(tprocdef(def),tprocdef(def).procsym.name);
|
|
{ Add procdef to the implemented interface }
|
|
if assigned(implprocdef) then
|
|
begin
|
|
if (implprocdef._class.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
|
|
Message1(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_objectdef : tobjectdef;
|
|
begin
|
|
old_current_objectdef:=current_objectdef;
|
|
current_objectdef:=_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)) then
|
|
add_new_vmt_entry(tprocdef(def));
|
|
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_objectdef:=old_current_objectdef;
|
|
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(Tai_const.Create_sym(p^.nl));
|
|
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 : aint;
|
|
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(Tai_const.Create_pint(count));
|
|
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(Tai_const.Create_32bit(p^.data.messageinf.i));
|
|
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(Tai_const.Create_32bit(count));
|
|
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);
|
|
|
|
current_asmdata.asmlists[al_typedconsts].concat(cai_align.create(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(pd._class.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.
|