fpc/compiler/symsym.pas
peter c95a859f0a * generic tlocation
* move tlocation to cgutils
2004-10-31 21:45:02 +00:00

2332 lines
67 KiB
ObjectPascal

{
$Id$
Copyright (c) 1998-2002 by Florian Klaempfl, Pierre Muller
Implementation for the symbols types of the symtable
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 symsym;
{$i fpcdefs.inc}
interface
uses
{ common }
cutils,
{ target }
globtype,globals,
{ symtable }
symconst,symbase,symtype,symdef,defcmp,
{ ppu }
ppu,
cclasses,symnot,
{ aasm }
aasmbase,
cpuinfo,cpubase,cgbase,cgutils,parabase
;
type
{ this class is the base for all symbol objects }
tstoredsym = class(tsym)
protected
_mangledname : pstring;
public
constructor create(const n : string);
constructor loadsym(ppufile:tcompilerppufile);
destructor destroy;override;
{$ifdef GDB}
function get_var_value(const s:string):string;
function stabstr_evaluate(const s:string;vars:array of string):Pchar;
{$endif GDB}
function mangledname : string;
procedure generate_mangledname;virtual;abstract;
end;
tlabelsym = class(tstoredsym)
lab : tasmlabel;
used,
defined : boolean;
code : pointer; { should be tnode }
constructor create(const n : string; l : tasmlabel);
constructor ppuload(ppufile:tcompilerppufile);
procedure generate_mangledname;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
{$ifdef GDB}
function stabstring : pchar;override;
{$endif GDB}
end;
tunitsym = class(Tsym)
unitsymtable : tsymtable;
constructor create(const n : string;ref : tsymtable);
constructor ppuload(ppufile:tcompilerppufile);
destructor destroy;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
terrorsym = class(Tsym)
constructor create;
end;
Tprocdefcallback = procedure(p:Tprocdef;arg:pointer);
tprocsym = class(tstoredsym)
protected
pdlistfirst,
pdlistlast : pprocdeflist; { linked list of overloaded procdefs }
function getprocdef(nr:cardinal):Tprocdef;
public
procdef_count : byte;
{$ifdef GDB}
is_global : boolean;
{$endif GDB}
overloadchecked : boolean;
overloadcount : word; { amount of overloaded functions in this module }
property procdef[nr:cardinal]:Tprocdef read getprocdef;
constructor create(const n : string);
constructor ppuload(ppufile:tcompilerppufile);
destructor destroy;override;
{ writes all declarations except the specified one }
procedure write_parameter_lists(skipdef:tprocdef);
{ tests, if all procedures definitions are defined and not }
{ only forward }
procedure check_forward;
procedure unchain_overload;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
procedure addprocdef(p:tprocdef);
procedure addprocdef_deref(const d:tderef);
procedure add_para_match_to(Aprocsym:Tprocsym;cpoptions:tcompare_paras_options);
procedure concat_procdefs_to(s:Tprocsym);
procedure foreach_procdef_static(proc2call:Tprocdefcallback;arg:pointer);
function first_procdef:Tprocdef;
function last_procdef:Tprocdef;
function search_procdef_nopara_boolret:Tprocdef;
function search_procdef_bytype(pt:Tproctypeoption):Tprocdef;
function search_procdef_bypara(params:Tlinkedlist;
retdef:tdef;
cpoptions:tcompare_paras_options):Tprocdef;
function search_procdef_byprocvardef(d:Tprocvardef):Tprocdef;
function search_procdef_assignment_operator(fromdef,todef:tdef):Tprocdef;
function write_references(ppufile:tcompilerppufile;locals:boolean):boolean;override;
function is_visible_for_object(currobjdef:tdef):boolean;override;
{$ifdef GDB}
function stabstring : pchar;override;
{$endif GDB}
end;
ttypesym = class(Tsym)
restype : ttype;
constructor create(const n : string;const tt : ttype);
constructor ppuload(ppufile:tcompilerppufile);
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
function gettypedef:tdef;override;
procedure load_references(ppufile:tcompilerppufile;locals:boolean);override;
function write_references(ppufile:tcompilerppufile;locals:boolean):boolean;override;
{$ifdef GDB}
function stabstring : pchar;override;
{$endif GDB}
end;
tvarsym = class(tstoredsym)
defaultconstsym : tsym;
varoptions : tvaroptions;
varspez : tvarspez; { sets the type of access }
varregable : tvarregable;
varstate : tvarstate;
localloc : TLocation; { register/reference for local var }
fieldoffset : longint; { offset in record/object }
paraitem : tparaitem;
notifications : Tlinkedlist;
constructor create(const n : string;vsp:tvarspez;const tt : ttype);
constructor create_dll(const n : string;vsp:tvarspez;const tt : ttype);
constructor create_C(const n,mangled : string;vsp:tvarspez;const tt : ttype);
constructor ppuload(ppufile:tcompilerppufile);
destructor destroy;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
procedure generate_mangledname;override;
procedure set_mangledname(const s:string);
function getsize : longint;
function is_regvar:boolean;
procedure trigger_notifications(what:Tnotification_flag);
function register_notification(flags:Tnotification_flags;
callback:Tnotification_callback):cardinal;
procedure unregister_notification(id:cardinal);
{$ifdef GDB}
function stabstring : pchar;override;
{$endif GDB}
private
procedure setvartype(const newtype: ttype);
_vartype : ttype;
public
property vartype: ttype read _vartype write setvartype;
end;
tpropertysym = class(Tsym)
propoptions : tpropertyoptions;
propoverriden : tpropertysym;
propoverridenderef : tderef;
proptype,
indextype : ttype;
index,
default : longint;
readaccess,
writeaccess,
storedaccess : tsymlist;
constructor create(const n : string);
destructor destroy;override;
constructor ppuload(ppufile:tcompilerppufile);
function getsize : longint;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function gettypedef:tdef;override;
procedure buildderef;override;
procedure deref;override;
procedure dooverride(overriden:tpropertysym);
end;
tabsolutesym = class(Tvarsym)
abstyp : absolutetyp;
{$ifdef i386}
absseg : boolean;
{$endif i386}
asmname : pstring;
ref : tsymlist;
constructor create(const n : string;const tt : ttype);
constructor create_ref(const n : string;const tt : ttype;_ref:tsymlist);
destructor destroy;override;
constructor ppuload(ppufile:tcompilerppufile);
procedure buildderef;override;
procedure deref;override;
function mangledname : string;
procedure ppuwrite(ppufile:tcompilerppufile);override;
{$ifdef gdb}
function stabstring:Pchar;override;
{$endif}
end;
ttypedconstsym = class(tstoredsym)
typedconsttype : ttype;
is_writable : boolean;
constructor create(const n : string;p : tdef;writable : boolean);
constructor createtype(const n : string;const tt : ttype;writable : boolean);
constructor ppuload(ppufile:tcompilerppufile);
destructor destroy;override;
procedure generate_mangledname;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
function getsize:longint;
{$ifdef GDB}
function stabstring : pchar;override;
{$endif GDB}
end;
tconstvalue = record
case integer of
0: (valueord : tconstexprint);
1: (valueordptr : tconstptruint);
2: (valueptr : pointer; len : longint);
end;
tconstsym = class(tstoredsym)
consttype : ttype;
consttyp : tconsttyp;
value : tconstvalue;
resstrindex : longint; { needed for resource strings }
constructor create_ord(const n : string;t : tconsttyp;v : tconstexprint;const tt:ttype);
constructor create_ordptr(const n : string;t : tconsttyp;v : tconstptruint;const tt:ttype);
constructor create_ptr(const n : string;t : tconsttyp;v : pointer;const tt:ttype);
constructor create_string(const n : string;t : tconsttyp;str:pchar;l:longint);
constructor ppuload(ppufile:tcompilerppufile);
destructor destroy;override;
procedure buildderef;override;
procedure deref;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
{$ifdef GDB}
function stabstring : pchar;override;
{$endif GDB}
end;
tenumsym = class(Tsym)
value : longint;
definition : tenumdef;
definitionderef : tderef;
nextenum : tenumsym;
constructor create(const n : string;def : tenumdef;v : longint);
constructor ppuload(ppufile:tcompilerppufile);
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
procedure order;
end;
tsyssym = class(Tsym)
number : longint;
constructor create(const n : string;l : longint);
constructor ppuload(ppufile:tcompilerppufile);
destructor destroy;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
end;
{ compiler generated symbol to point to rtti and init/finalize tables }
trttisym = class(tstoredsym)
lab : tasmsymbol;
rttityp : trttitype;
constructor create(const n:string;rt:trttitype);
constructor ppuload(ppufile:tcompilerppufile);
procedure ppuwrite(ppufile:tcompilerppufile);override;
function mangledname:string;
function get_label:tasmsymbol;
end;
var
generrorsym : tsym;
implementation
uses
// strings,
{ global }
verbose,
{ target }
systems,
{ symtable }
defutil,symtable,
{ tree }
node,
{ aasm }
// aasmcpu,
{ codegen }
paramgr,cresstr,
procinfo
;
{****************************************************************************
Helpers
****************************************************************************}
{****************************************************************************
TSYM (base for all symtypes)
****************************************************************************}
constructor tstoredsym.create(const n : string);
begin
inherited create(n);
_mangledname:=nil;
end;
constructor tstoredsym.loadsym(ppufile:tcompilerppufile);
begin
inherited loadsym(ppufile);
_mangledname:=nil;
end;
{ procedure tstoredsym.buildderef;
begin
end;
procedure tstoredsym.deref;
begin
end;}
destructor tstoredsym.destroy;
begin
if assigned(_mangledname) then
begin
{$ifdef MEMDEBUG}
memmanglednames.start;
{$endif MEMDEBUG}
stringdispose(_mangledname);
{$ifdef MEMDEBUG}
memmanglednames.stop;
{$endif MEMDEBUG}
end;
if assigned(defref) then
begin
{$ifdef MEMDEBUG}
membrowser.start;
{$endif MEMDEBUG}
defref.freechain;
defref.free;
{$ifdef MEMDEBUG}
membrowser.stop;
{$endif MEMDEBUG}
end;
inherited destroy;
end;
{$ifdef GDB}
function Tstoredsym.get_var_value(const s:string):string;
begin
if s='mangledname' then
get_var_value:=mangledname
else
get_var_value:=inherited get_var_value(s);
end;
function Tstoredsym.stabstr_evaluate(const s:string;vars:array of string):Pchar;
begin
stabstr_evaluate:=string_evaluate(s,@get_var_value,vars);
end;
{$endif GDB}
function tstoredsym.mangledname : string;
begin
if not assigned(_mangledname) then
begin
generate_mangledname;
if not assigned(_mangledname) then
internalerror(200204171);
end;
{$ifdef compress}
mangledname:=minilzw_decode(_mangledname^);
{$else}
mangledname:=_mangledname^;
{$endif}
end;
{****************************************************************************
TLABELSYM
****************************************************************************}
constructor tlabelsym.create(const n : string; l : tasmlabel);
begin
inherited create(n);
typ:=labelsym;
lab:=l;
used:=false;
defined:=false;
code:=nil;
end;
constructor tlabelsym.ppuload(ppufile:tcompilerppufile);
begin
inherited loadsym(ppufile);
typ:=labelsym;
{ this is all dummy
it is only used for local browsing }
lab:=nil;
code:=nil;
used:=false;
defined:=true;
end;
procedure tlabelsym.generate_mangledname;
begin
{$ifdef compress}
_mangledname:=stringdup(minilzw_encode(lab.name));
{$else}
_mangledname:=stringdup(lab.name);
{$endif}
end;
procedure tlabelsym.ppuwrite(ppufile:tcompilerppufile);
begin
if owner.symtabletype=globalsymtable then
Message(sym_e_ill_label_decl)
else
begin
inherited writesym(ppufile);
ppufile.writeentry(iblabelsym);
end;
end;
{$ifdef GDB}
function Tlabelsym.stabstring : pchar;
begin
stabstring:=stabstr_evaluate('"${name}",${N_LSYM},0,${line},0',[]);
end;
{$endif GDB}
{****************************************************************************
TUNITSYM
****************************************************************************}
constructor tunitsym.create(const n : string;ref : tsymtable);
var
old_make_ref : boolean;
begin
old_make_ref:=make_ref;
make_ref:=false;
inherited create(n);
make_ref:=old_make_ref;
typ:=unitsym;
unitsymtable:=ref;
end;
constructor tunitsym.ppuload(ppufile:tcompilerppufile);
begin
inherited loadsym(ppufile);
typ:=unitsym;
unitsymtable:=nil;
refs:=0;
end;
destructor tunitsym.destroy;
begin
inherited destroy;
end;
procedure tunitsym.ppuwrite(ppufile:tcompilerppufile);
begin
inherited writesym(ppufile);
ppufile.writeentry(ibunitsym);
end;
{****************************************************************************
TPROCSYM
****************************************************************************}
constructor tprocsym.create(const n : string);
begin
inherited create(n);
typ:=procsym;
pdlistfirst:=nil;
pdlistlast:=nil;
owner:=nil;
{$ifdef GDB}
is_global:=false;
{$endif GDB}
{ the tprocdef have their own symoptions, make the procsym
always visible }
symoptions:=[sp_public];
overloadchecked:=false;
overloadcount:=0;
procdef_count:=0;
end;
constructor tprocsym.ppuload(ppufile:tcompilerppufile);
var
pdderef : tderef;
i,n : longint;
begin
inherited loadsym(ppufile);
typ:=procsym;
pdlistfirst:=nil;
pdlistlast:=nil;
procdef_count:=0;
n:=ppufile.getword;
for i:=1to n do
begin
ppufile.getderef(pdderef);
addprocdef_deref(pdderef);
end;
{$ifdef GDB}
is_global:=false;
{$endif GDB}
overloadchecked:=false;
overloadcount:=$ffff; { invalid, not used anymore }
end;
destructor tprocsym.destroy;
var
hp,p : pprocdeflist;
begin
p:=pdlistfirst;
while assigned(p) do
begin
hp:=p^.next;
dispose(p);
p:=hp;
end;
inherited destroy;
end;
procedure tprocsym.ppuwrite(ppufile:tcompilerppufile);
var
p : pprocdeflist;
n : word;
begin
inherited writesym(ppufile);
{ count procdefs }
n:=0;
p:=pdlistfirst;
while assigned(p) do
begin
{ only write the proc definitions that belong
to this procsym and are in the global symtable }
if p^.own and
(p^.def.owner.symtabletype in [globalsymtable,objectsymtable]) then
inc(n);
p:=p^.next;
end;
ppufile.putword(n);
{ write procdefs }
p:=pdlistfirst;
while assigned(p) do
begin
{ only write the proc definitions that belong
to this procsym and are in the global symtable }
if p^.own and
(p^.def.owner.symtabletype in [globalsymtable,objectsymtable]) then
ppufile.putderef(p^.defderef);
p:=p^.next;
end;
ppufile.writeentry(ibprocsym);
end;
procedure tprocsym.write_parameter_lists(skipdef:tprocdef);
var
p : pprocdeflist;
begin
p:=pdlistfirst;
while assigned(p) do
begin
if p^.def<>skipdef then
MessagePos1(p^.def.fileinfo,sym_h_param_list,p^.def.fullprocname(false));
p:=p^.next;
end;
end;
{Makes implicit externals (procedures declared in the interface
section which do not have a counterpart in the implementation)
to be an imported procedure. For mode macpas.}
procedure import_implict_external(pd:tabstractprocdef);
begin
tprocdef(pd).forwarddef:=false;
tprocdef(pd).setmangledname(target_info.CPrefix+tprocdef(pd).procsym.realname);
end;
procedure tprocsym.check_forward;
var
p : pprocdeflist;
begin
p:=pdlistfirst;
while assigned(p) do
begin
if p^.own and (p^.def.forwarddef) then
begin
if (m_mac in aktmodeswitches) and (p^.def.interfacedef) then
import_implict_external(p^.def)
else
begin
MessagePos1(p^.def.fileinfo,sym_e_forward_not_resolved,p^.def.fullprocname(false));
{ Turn further error messages off }
p^.def.forwarddef:=false;
end
end;
p:=p^.next;
end;
end;
procedure tprocsym.buildderef;
var
p : pprocdeflist;
begin
p:=pdlistfirst;
while assigned(p) do
begin
if p^.own then
p^.defderef.build(p^.def);
p:=p^.next;
end;
end;
procedure tprocsym.deref;
var
p : pprocdeflist;
begin
{ We have removed the overloaded entries, because they
are not valid anymore and we can't deref them because
the unit were they come from is not necessary in
our uses clause (PFV) }
unchain_overload;
{ Deref our own procdefs }
p:=pdlistfirst;
while assigned(p) do
begin
if not p^.own then
internalerror(200310291);
p^.def:=tprocdef(p^.defderef.resolve);
p:=p^.next;
end;
end;
procedure tprocsym.addprocdef(p:tprocdef);
var
pd : pprocdeflist;
begin
new(pd);
pd^.def:=p;
pd^.defderef.reset;
pd^.next:=nil;
pd^.own:=(pd^.def.procsym=self);
{ if not pd^.own then
internalerror(2222222);}
{ Add at end of list to keep always
a correct order, also after loading from ppu }
if assigned(pdlistlast) then
begin
pdlistlast^.next:=pd;
pdlistlast:=pd;
end
else
begin
pdlistfirst:=pd;
pdlistlast:=pd;
end;
inc(procdef_count);
end;
procedure tprocsym.addprocdef_deref(const d:tderef);
var
pd : pprocdeflist;
begin
new(pd);
pd^.def:=nil;
pd^.defderef:=d;
pd^.next:=nil;
pd^.own:=true;
{ Add at end of list to keep always
a correct order, also after loading from ppu }
if assigned(pdlistlast) then
begin
pdlistlast^.next:=pd;
pdlistlast:=pd;
end
else
begin
pdlistfirst:=pd;
pdlistlast:=pd;
end;
inc(procdef_count);
end;
function Tprocsym.getprocdef(nr:cardinal):Tprocdef;
var
i : cardinal;
pd : pprocdeflist;
begin
pd:=pdlistfirst;
for i:=2 to nr do
begin
if not assigned(pd) then
internalerror(200209051);
pd:=pd^.next;
end;
getprocdef:=pd^.def;
end;
procedure Tprocsym.add_para_match_to(Aprocsym:Tprocsym;cpoptions:tcompare_paras_options);
var
pd:pprocdeflist;
begin
pd:=pdlistfirst;
while assigned(pd) do
begin
if Aprocsym.search_procdef_bypara(pd^.def.para,nil,cpoptions)=nil then
Aprocsym.addprocdef(pd^.def);
pd:=pd^.next;
end;
end;
procedure Tprocsym.concat_procdefs_to(s:Tprocsym);
var
pd : pprocdeflist;
begin
pd:=pdlistfirst;
while assigned(pd) do
begin
s.addprocdef(pd^.def);
pd:=pd^.next;
end;
end;
function Tprocsym.first_procdef:Tprocdef;
begin
if assigned(pdlistfirst) then
first_procdef:=pdlistfirst^.def
else
first_procdef:=nil;
end;
function Tprocsym.last_procdef:Tprocdef;
begin
if assigned(pdlistlast) then
last_procdef:=pdlistlast^.def
else
last_procdef:=nil;
end;
procedure Tprocsym.foreach_procdef_static(proc2call:Tprocdefcallback;arg:pointer);
var
p : pprocdeflist;
begin
p:=pdlistfirst;
while assigned(p) do
begin
proc2call(p^.def,arg);
p:=p^.next;
end;
end;
function Tprocsym.search_procdef_nopara_boolret:Tprocdef;
var
p : pprocdeflist;
begin
search_procdef_nopara_boolret:=nil;
p:=pdlistfirst;
while p<>nil do
begin
if (p^.def.maxparacount=0) and
is_boolean(p^.def.rettype.def) then
begin
search_procdef_nopara_boolret:=p^.def;
break;
end;
p:=p^.next;
end;
end;
function Tprocsym.search_procdef_bytype(pt:Tproctypeoption):Tprocdef;
var
p : pprocdeflist;
begin
search_procdef_bytype:=nil;
p:=pdlistfirst;
while p<>nil do
begin
if p^.def.proctypeoption=pt then
begin
search_procdef_bytype:=p^.def;
break;
end;
p:=p^.next;
end;
end;
function Tprocsym.search_procdef_bypara(params:Tlinkedlist;
retdef:tdef;
cpoptions:tcompare_paras_options):Tprocdef;
var
pd : pprocdeflist;
eq : tequaltype;
begin
search_procdef_bypara:=nil;
pd:=pdlistfirst;
while assigned(pd) do
begin
if assigned(retdef) then
eq:=compare_defs(retdef,pd^.def.rettype.def,nothingn)
else
eq:=te_equal;
if (eq>=te_equal) or
((cpo_allowconvert in cpoptions) and (eq>te_incompatible)) then
begin
eq:=compare_paras(params,pd^.def.para,cp_value_equal_const,cpoptions);
if (eq>=te_equal) or
((cpo_allowconvert in cpoptions) and (eq>te_incompatible)) then
begin
search_procdef_bypara:=pd^.def;
break;
end;
end;
pd:=pd^.next;
end;
end;
function Tprocsym.search_procdef_byprocvardef(d:Tprocvardef):Tprocdef;
var
pd : pprocdeflist;
eq,besteq : tequaltype;
bestpd : tprocdef;
begin
{ This function will return the pprocdef of pprocsym that
is the best match for procvardef. When there are multiple
matches it returns nil.}
search_procdef_byprocvardef:=nil;
bestpd:=nil;
besteq:=te_incompatible;
pd:=pdlistfirst;
while assigned(pd) do
begin
eq:=proc_to_procvar_equal(pd^.def,d,false);
if eq>=te_equal then
begin
{ multiple procvars with the same equal level }
if assigned(bestpd) and
(besteq=eq) then
exit;
if eq>besteq then
begin
besteq:=eq;
bestpd:=pd^.def;
end;
end;
pd:=pd^.next;
end;
search_procdef_byprocvardef:=bestpd;
end;
function Tprocsym.search_procdef_assignment_operator(fromdef,todef:tdef):Tprocdef;
var
convtyp : tconverttype;
pd : pprocdeflist;
bestpd : tprocdef;
eq,
besteq : tequaltype;
hpd : tprocdef;
currpara : tparaitem;
begin
result:=nil;
bestpd:=nil;
besteq:=te_incompatible;
pd:=pdlistfirst;
while assigned(pd) do
begin
if equal_defs(todef,pd^.def.rettype.def) then
begin
currpara:=Tparaitem(pd^.def.para.first);
{ ignore vs_hidden parameters }
while assigned(currpara) and (currpara.is_hidden) do
currpara:=tparaitem(currpara.next);
if assigned(currpara) then
begin
eq:=compare_defs_ext(fromdef,currpara.paratype.def,nothingn,convtyp,hpd,[]);
if eq=te_exact then
begin
result:=pd^.def;
exit;
end;
if eq>besteq then
begin
bestpd:=pd^.def;
besteq:=eq;
end;
end;
end;
pd:=pd^.next;
end;
result:=bestpd;
end;
function tprocsym.write_references(ppufile:tcompilerppufile;locals:boolean) : boolean;
var
p : pprocdeflist;
begin
write_references:=false;
if not inherited write_references(ppufile,locals) then
exit;
write_references:=true;
p:=pdlistfirst;
while assigned(p) do
begin
if p^.own then
p^.def.write_references(ppufile,locals);
p:=p^.next;
end;
end;
procedure tprocsym.unchain_overload;
var
p,hp : pprocdeflist;
begin
{ remove all overloaded procdefs from the
procdeflist that are not in the current symtable }
overloadchecked:=false;
p:=pdlistfirst;
{ reset new lists }
pdlistfirst:=nil;
pdlistlast:=nil;
while assigned(p) do
begin
hp:=p^.next;
if p^.own then
begin
{ keep, add to list }
if assigned(pdlistlast) then
begin
pdlistlast^.next:=p;
pdlistlast:=p;
end
else
begin
pdlistfirst:=p;
pdlistlast:=p;
end;
p^.next:=nil;
end
else
begin
{ remove }
dispose(p);
dec(procdef_count);
end;
p:=hp;
end;
end;
function tprocsym.is_visible_for_object(currobjdef:tdef):boolean;
var
p : pprocdeflist;
begin
{ This procsym is visible, when there is at least
one of the procdefs visible }
result:=false;
p:=pdlistfirst;
while assigned(p) do
begin
if p^.own and
p^.def.is_visible_for_object(tobjectdef(currobjdef)) then
begin
result:=true;
exit;
end;
p:=p^.next;
end;
end;
{$ifdef GDB}
function tprocsym.stabstring : pchar;
begin
internalerror(200111171);
result:=nil;
end;
{$endif GDB}
{****************************************************************************
TERRORSYM
****************************************************************************}
constructor terrorsym.create;
begin
inherited create('');
typ:=errorsym;
end;
{****************************************************************************
TPROPERTYSYM
****************************************************************************}
constructor tpropertysym.create(const n : string);
begin
inherited create(n);
typ:=propertysym;
propoptions:=[];
index:=0;
default:=0;
proptype.reset;
indextype.reset;
readaccess:=tsymlist.create;
writeaccess:=tsymlist.create;
storedaccess:=tsymlist.create;
end;
constructor tpropertysym.ppuload(ppufile:tcompilerppufile);
begin
inherited loadsym(ppufile);
typ:=propertysym;
ppufile.getsmallset(propoptions);
if (ppo_is_override in propoptions) then
begin
ppufile.getderef(propoverridenderef);
{ we need to have these objects initialized }
readaccess:=tsymlist.create;
writeaccess:=tsymlist.create;
storedaccess:=tsymlist.create;
end
else
begin
ppufile.gettype(proptype);
index:=ppufile.getlongint;
default:=ppufile.getlongint;
ppufile.gettype(indextype);
readaccess:=ppufile.getsymlist;
writeaccess:=ppufile.getsymlist;
storedaccess:=ppufile.getsymlist;
end;
end;
destructor tpropertysym.destroy;
begin
readaccess.free;
writeaccess.free;
storedaccess.free;
inherited destroy;
end;
function tpropertysym.gettypedef:tdef;
begin
gettypedef:=proptype.def;
end;
procedure tpropertysym.buildderef;
begin
if (ppo_is_override in propoptions) then
begin
propoverridenderef.build(propoverriden);
end
else
begin
proptype.buildderef;
indextype.buildderef;
readaccess.buildderef;
writeaccess.buildderef;
storedaccess.buildderef;
end;
end;
procedure tpropertysym.deref;
begin
if (ppo_is_override in propoptions) then
begin
propoverriden:=tpropertysym(propoverridenderef.resolve);
dooverride(propoverriden);
end
else
begin
proptype.resolve;
indextype.resolve;
readaccess.resolve;
writeaccess.resolve;
storedaccess.resolve;
end;
end;
function tpropertysym.getsize : longint;
begin
getsize:=0;
end;
procedure tpropertysym.ppuwrite(ppufile:tcompilerppufile);
begin
inherited writesym(ppufile);
ppufile.putsmallset(propoptions);
if (ppo_is_override in propoptions) then
ppufile.putderef(propoverridenderef)
else
begin
ppufile.puttype(proptype);
ppufile.putlongint(index);
ppufile.putlongint(default);
ppufile.puttype(indextype);
ppufile.putsymlist(readaccess);
ppufile.putsymlist(writeaccess);
ppufile.putsymlist(storedaccess);
end;
ppufile.writeentry(ibpropertysym);
end;
procedure tpropertysym.dooverride(overriden:tpropertysym);
begin
propoverriden:=overriden;
proptype:=overriden.proptype;
propoptions:=overriden.propoptions+[ppo_is_override];
index:=overriden.index;
default:=overriden.default;
indextype:=overriden.indextype;
readaccess.free;
readaccess:=overriden.readaccess.getcopy;
writeaccess.free;
writeaccess:=overriden.writeaccess.getcopy;
storedaccess.free;
storedaccess:=overriden.storedaccess.getcopy;
end;
{****************************************************************************
TABSOLUTESYM
****************************************************************************}
constructor tabsolutesym.create(const n : string;const tt : ttype);
begin
inherited create(n,vs_value,tt);
typ:=absolutesym;
ref:=nil;
end;
constructor tabsolutesym.create_ref(const n : string;const tt : ttype;_ref:tsymlist);
begin
inherited create(n,vs_value,tt);
typ:=absolutesym;
ref:=_ref;
end;
destructor tabsolutesym.destroy;
begin
if assigned(ref) then
ref.free;
inherited destroy;
end;
constructor tabsolutesym.ppuload(ppufile:tcompilerppufile);
begin
{ Note: This needs to load everything of tvarsym.write }
inherited ppuload(ppufile);
{ load absolute }
typ:=absolutesym;
ref:=nil;
fieldoffset:=0;
asmname:=nil;
abstyp:=absolutetyp(ppufile.getbyte);
{$ifdef i386}
absseg:=false;
{$endif i386}
case abstyp of
tovar :
ref:=ppufile.getsymlist;
toasm :
asmname:=stringdup(ppufile.getstring);
toaddr :
begin
fieldoffset:=ppufile.getlongint;
{$ifdef i386}
absseg:=boolean(ppufile.getbyte);
{$endif i386}
end;
end;
end;
procedure tabsolutesym.ppuwrite(ppufile:tcompilerppufile);
var
oldintfcrc : boolean;
begin
{ Note: This needs to write everything of tvarsym.write }
inherited writesym(ppufile);
ppufile.putbyte(byte(varspez));
oldintfcrc:=ppufile.do_crc;
ppufile.do_crc:=false;
ppufile.putbyte(byte(varregable));
ppufile.do_crc:=oldintfcrc;
ppufile.putlongint(fieldoffset);
{ write only definition or definitionsym }
ppufile.puttype(vartype);
ppufile.putsmallset(varoptions);
ppufile.putbyte(byte(abstyp));
case abstyp of
tovar :
ppufile.putsymlist(ref);
toasm :
ppufile.putstring(asmname^);
toaddr :
begin
ppufile.putlongint(fieldoffset);
{$ifdef i386}
ppufile.putbyte(byte(absseg));
{$endif i386}
end;
end;
ppufile.writeentry(ibabsolutesym);
end;
procedure tabsolutesym.buildderef;
begin
{ inheritance of varsym.deref ! }
vartype.buildderef;
if (abstyp=tovar) then
ref.buildderef;
end;
procedure tabsolutesym.deref;
begin
{ inheritance of varsym.deref ! }
vartype.resolve;
{ own absolute deref }
if (abstyp=tovar) then
ref.resolve;
end;
function tabsolutesym.mangledname : string;
begin
case abstyp of
toasm :
mangledname:=asmname^;
toaddr :
mangledname:='$'+tostr(fieldoffset);
else
internalerror(10002);
end;
end;
{$ifdef GDB}
function Tabsolutesym.stabstring:Pchar;
begin
stabstring:=nil;
end;
{$endif GDB}
{****************************************************************************
TVARSYM
****************************************************************************}
constructor tvarsym.create(const n : string;vsp:tvarspez;const tt : ttype);
begin
inherited create(n);
typ:=varsym;
vartype:=tt;
_mangledname:=nil;
varspez:=vsp;
fieldoffset:=0;
fillchar(localloc,sizeof(localloc),0);
defaultconstsym:=nil;
refs:=0;
varstate:=vs_declared;
varoptions:=[];
end;
constructor tvarsym.create_dll(const n : string;vsp:tvarspez;const tt : ttype);
begin
tvarsym(self).create(n,vsp,tt);
include(varoptions,vo_is_dll_var);
end;
constructor tvarsym.create_C(const n,mangled : string;vsp:tvarspez;const tt : ttype);
begin
tvarsym(self).create(n,vsp,tt);
stringdispose(_mangledname);
{$ifdef compress}
_mangledname:=stringdup(minilzw_encode(mangled));
{$else}
_mangledname:=stringdup(mangled);
{$endif}
end;
constructor tvarsym.ppuload(ppufile:tcompilerppufile);
begin
inherited loadsym(ppufile);
typ:=varsym;
fillchar(localloc,sizeof(localloc),0);
refs := 0;
varstate:=vs_used;
varspez:=tvarspez(ppufile.getbyte);
varregable:=tvarregable(ppufile.getbyte);
fieldoffset:=ppufile.getlongint;
defaultconstsym:=nil;
ppufile.gettype(_vartype);
ppufile.getsmallset(varoptions);
if [vo_is_C_var,vo_is_dll_var]*varoptions<>[] then
_mangledname:=stringdup(ppufile.getstring);
end;
destructor tvarsym.destroy;
begin
if assigned(notifications) then
notifications.destroy;
inherited destroy;
end;
procedure tvarsym.buildderef;
begin
vartype.buildderef;
end;
procedure tvarsym.deref;
begin
vartype.resolve;
end;
procedure tvarsym.ppuwrite(ppufile:tcompilerppufile);
var
oldintfcrc : boolean;
begin
inherited writesym(ppufile);
ppufile.putbyte(byte(varspez));
oldintfcrc:=ppufile.do_crc;
ppufile.do_crc:=false;
ppufile.putbyte(byte(varregable));
ppufile.do_crc:=oldintfcrc;
ppufile.putlongint(fieldoffset);
ppufile.puttype(vartype);
ppufile.putsmallset(varoptions);
if [vo_is_C_var,vo_is_dll_var]*varoptions<>[] then
ppufile.putstring(_mangledname^);
ppufile.writeentry(ibvarsym);
end;
procedure tvarsym.generate_mangledname;
begin
{$ifdef compress}
_mangledname:=stringdup(minilzw_encode(make_mangledname('U',owner,name)));
{$else}
_mangledname:=stringdup(make_mangledname('U',owner,name));
{$endif}
end;
procedure tvarsym.set_mangledname(const s:string);
begin
stringdispose(_mangledname);
{$ifdef compress}
_mangledname:=stringdup(minilzw_encode(s));
{$else}
_mangledname:=stringdup(s);
{$endif}
end;
function tvarsym.getsize : longint;
begin
if assigned(vartype.def) and
((vartype.def.deftype<>arraydef) or
tarraydef(vartype.def).isDynamicArray or
(tarraydef(vartype.def).highrange>=tarraydef(vartype.def).lowrange)) then
result:=vartype.def.size
else
result:=0;
end;
function tvarsym.is_regvar:boolean;
begin
result:=(cs_regvars in aktglobalswitches) and
not(pi_has_assembler_block in current_procinfo.flags) and
not(pi_uses_exceptions in current_procinfo.flags) and
not(vo_has_local_copy in varoptions) and
(varregable<>vr_none);
end;
procedure Tvarsym.trigger_notifications(what:Tnotification_flag);
var n:Tnotification;
begin
if assigned(notifications) then
begin
n:=Tnotification(notifications.first);
while assigned(n) do
begin
if what in n.flags then
n.callback(what,self);
n:=Tnotification(n.next);
end;
end;
end;
function Tvarsym.register_notification(flags:Tnotification_flags;callback:
Tnotification_callback):cardinal;
var n:Tnotification;
begin
if not assigned(notifications) then
notifications:=Tlinkedlist.create;
n:=Tnotification.create(flags,callback);
register_notification:=n.id;
notifications.concat(n);
end;
procedure Tvarsym.unregister_notification(id:cardinal);
var n:Tnotification;
begin
if not assigned(notifications) then
internalerror(200212311)
else
begin
n:=Tnotification(notifications.first);
while assigned(n) do
begin
if n.id=id then
begin
notifications.remove(n);
n.destroy;
exit;
end;
n:=Tnotification(n.next);
end;
internalerror(200212311)
end;
end;
{$ifdef GDB}
function Tvarsym.stabstring:Pchar;
var st:string;
threadvaroffset:string;
regidx:Tregisterindex;
c:char;
loc: tcgloc;
begin
{ set loc to LOC_REFERENCE to get somewhat usable debugging info for -Or }
{ while stabs aren't adapted for regvars yet }
stabstring:=nil;
loc := localloc.loc;
if (vo_is_self in varoptions) then
begin
case loc of
LOC_REGISTER,
LOC_CREGISTER:
regidx:=findreg_by_number(localloc.register);
LOC_REFERENCE: ;
else
internalerror(2003091815);
end;
if (po_classmethod in current_procinfo.procdef.procoptions) or
(po_staticmethod in current_procinfo.procdef.procoptions) then
begin
if (loc=LOC_REFERENCE) then
stabstring:=stabstr_evaluate('"pvmt:p$1",${N_TSYM},0,0,$2',
[Tstoreddef(pvmttype.def).numberstring,tostr(localloc.reference.offset)]);
(* else
stabstring:=stabstr_evaluate('"pvmt:r$1",${N_RSYM},0,0,$2',
[Tstoreddef(pvmttype.def).numberstring,tostr(regstabs_table[regidx])]) *)
end
else
begin
if not(is_class(current_procinfo.procdef._class)) then
c:='v'
else
c:='p';
if (loc=LOC_REFERENCE) then
stabstring:=stabstr_evaluate('"$$t:$1",${N_TSYM},0,0,$2',
[c+current_procinfo.procdef._class.numberstring,tostr(localloc.reference.offset)]);
(* else
stabstring:=stabstr_evaluate('"$$t:r$1",${N_RSYM},0,0,$2',
[c+current_procinfo.procdef._class.numberstring,tostr(regstabs_table[regidx])]); *)
end;
end
else
begin
st:=tstoreddef(vartype.def).numberstring;
if (vo_is_thread_var in varoptions) then
threadvaroffset:='+'+tostr(sizeof(aint))
else
threadvaroffset:='';
case owner.symtabletype of
objectsymtable:
if (sp_static in symoptions) then
begin
if (cs_gdb_gsym in aktglobalswitches) then
st:='G'+st
else
st:='S'+st;
stabstring:=stabstr_evaluate('"${ownername}__${name}:$1",${N_LCSYM},0,${line},${mangledname}$2',
[st,threadvaroffset]);
end;
globalsymtable:
begin
{ Here we used S instead of
because with G GDB doesn't look at the address field
but searches the same name or with a leading underscore
but these names don't exist in pascal !}
if (cs_gdb_gsym in aktglobalswitches) then
st:='G'+st
else
st:='S'+st;
stabstring:=stabstr_evaluate('"${name}:$1",${N_LCSYM},0,${line},${mangledname}$2',[st,threadvaroffset]);
end;
staticsymtable :
stabstring:=stabstr_evaluate('"${name}:S$1",${N_LCSYM},0,${line},${mangledname}$2',[st,threadvaroffset]);
parasymtable,localsymtable:
begin
{ There is no space allocated for not referenced locals }
if (owner.symtabletype=localsymtable) and (refs=0) then
exit;
if (vo_is_C_var in varoptions) then
begin
stabstring:=stabstr_evaluate('"${name}:S$1",${N_LCSYM},0,${line},${mangledname}',[st]);
exit;
end;
if (owner.symtabletype=parasymtable) then
begin
if paramanager.push_addr_param(varspez,vartype.def,tprocdef(owner.defowner).proccalloption) and
not(vo_has_local_copy in varoptions) and
not is_open_string(vartype.def) then
st := 'v'+st { should be 'i' but 'i' doesn't work }
else
st := 'p'+st;
end;
case loc of
LOC_REGISTER,
LOC_CREGISTER,
LOC_MMREGISTER,
LOC_CMMREGISTER,
LOC_FPUREGISTER,
LOC_CFPUREGISTER :
begin
regidx:=findreg_by_number(localloc.register);
{ "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi", "eip", "ps", "cs", "ss", "ds", "es", "fs", "gs", }
{ this is the register order for GDB}
if regidx<>0 then
stabstring:=stabstr_evaluate('"${name}:r$1",${N_RSYM},0,${line},$2',[st,tostr(regstabs_table[regidx])]);
end;
LOC_REFERENCE :
{ offset to ebp => will not work if the framepointer is esp
so some optimizing will make things harder to debug }
stabstring:=stabstr_evaluate('"${name}:$1",${N_TSYM},0,${line},$2',[st,tostr(localloc.reference.offset)])
else
internalerror(2003091814);
end;
end;
else
stabstring := inherited stabstring;
end;
end;
end;
{$endif GDB}
procedure tvarsym.setvartype(const newtype: ttype);
begin
_vartype := newtype;
{ can we load the value into a register ? }
if not assigned(owner) or
(owner.symtabletype in [localsymtable,parasymtable]) or
(
(owner.symtabletype=staticsymtable) and
not(cs_create_pic in aktmoduleswitches)
) then
begin
if tstoreddef(vartype.def).is_intregable then
varregable:=vr_intreg
else
{$warning TODO: no fpu regvar in staticsymtable yet, need initialization with 0}
if (
not assigned(owner) or
(owner.symtabletype<>staticsymtable)
) and
tstoreddef(vartype.def).is_fpuregable then
varregable:=vr_fpureg;
end;
end;
{****************************************************************************
TTYPEDCONSTSYM
*****************************************************************************}
constructor ttypedconstsym.create(const n : string;p : tdef;writable : boolean);
begin
inherited create(n);
typ:=typedconstsym;
typedconsttype.setdef(p);
is_writable:=writable;
end;
constructor ttypedconstsym.createtype(const n : string;const tt : ttype;writable : boolean);
begin
inherited create(n);
typ:=typedconstsym;
typedconsttype:=tt;
is_writable:=writable;
end;
constructor ttypedconstsym.ppuload(ppufile:tcompilerppufile);
begin
inherited loadsym(ppufile);
typ:=typedconstsym;
ppufile.gettype(typedconsttype);
is_writable:=boolean(ppufile.getbyte);
end;
destructor ttypedconstsym.destroy;
begin
inherited destroy;
end;
procedure ttypedconstsym.generate_mangledname;
begin
{$ifdef compress}
_mangledname:=stringdup(make_mangledname('TC',owner,name));
{$else}
_mangledname:=stringdup(make_mangledname('TC',owner,name));
{$endif}
end;
function ttypedconstsym.getsize : longint;
begin
if assigned(typedconsttype.def) then
getsize:=typedconsttype.def.size
else
getsize:=0;
end;
procedure ttypedconstsym.buildderef;
begin
typedconsttype.buildderef;
end;
procedure ttypedconstsym.deref;
begin
typedconsttype.resolve;
end;
procedure ttypedconstsym.ppuwrite(ppufile:tcompilerppufile);
begin
inherited writesym(ppufile);
ppufile.puttype(typedconsttype);
ppufile.putbyte(byte(is_writable));
ppufile.writeentry(ibtypedconstsym);
end;
{$ifdef GDB}
function ttypedconstsym.stabstring : pchar;
var st:char;
begin
if (cs_gdb_gsym in aktglobalswitches) and (owner.symtabletype=globalsymtable) then
st:='G'
else
st:='S';
stabstring:=stabstr_evaluate('"${name}:$1$2",${N_STSYM},0,${line},${mangledname}',
[st,Tstoreddef(typedconsttype.def).numberstring]);
end;
{$endif GDB}
{****************************************************************************
TCONSTSYM
****************************************************************************}
constructor tconstsym.create_ord(const n : string;t : tconsttyp;v : tconstexprint;const tt:ttype);
begin
inherited create(n);
fillchar(value, sizeof(value), #0);
typ:=constsym;
consttyp:=t;
value.valueord:=v;
ResStrIndex:=0;
consttype:=tt;
end;
constructor tconstsym.create_ordptr(const n : string;t : tconsttyp;v : tconstptruint;const tt:ttype);
begin
inherited create(n);
fillchar(value, sizeof(value), #0);
typ:=constsym;
consttyp:=t;
value.valueordptr:=v;
ResStrIndex:=0;
consttype:=tt;
end;
constructor tconstsym.create_ptr(const n : string;t : tconsttyp;v : pointer;const tt:ttype);
begin
inherited create(n);
fillchar(value, sizeof(value), #0);
typ:=constsym;
consttyp:=t;
value.valueptr:=v;
ResStrIndex:=0;
consttype:=tt;
end;
constructor tconstsym.create_string(const n : string;t : tconsttyp;str:pchar;l:longint);
begin
inherited create(n);
fillchar(value, sizeof(value), #0);
typ:=constsym;
consttyp:=t;
value.valueptr:=str;
consttype.reset;
value.len:=l;
if t=constresourcestring then
ResStrIndex:=ResourceStrings.Register(name,pchar(value.valueptr),value.len);
end;
constructor tconstsym.ppuload(ppufile:tcompilerppufile);
var
pd : pbestreal;
ps : pnormalset;
pc : pchar;
begin
inherited loadsym(ppufile);
typ:=constsym;
consttype.reset;
consttyp:=tconsttyp(ppufile.getbyte);
fillchar(value, sizeof(value), #0);
case consttyp of
constord :
begin
ppufile.gettype(consttype);
value.valueord:=ppufile.getexprint;
end;
constpointer :
begin
ppufile.gettype(consttype);
value.valueordptr:=ppufile.getptruint;
end;
conststring,
constresourcestring :
begin
value.len:=ppufile.getlongint;
getmem(pc,value.len+1);
ppufile.getdata(pc^,value.len);
if consttyp=constresourcestring then
ResStrIndex:=ppufile.getlongint;
value.valueptr:=pc;
end;
constreal :
begin
new(pd);
pd^:=ppufile.getreal;
value.valueptr:=pd;
end;
constset :
begin
ppufile.gettype(consttype);
new(ps);
ppufile.getnormalset(ps^);
value.valueptr:=ps;
end;
constguid :
begin
new(pguid(value.valueptr));
ppufile.getdata(value.valueptr^,sizeof(tguid));
end;
constnil : ;
else
Message1(unit_f_ppu_invalid_entry,tostr(ord(consttyp)));
end;
end;
destructor tconstsym.destroy;
begin
case consttyp of
conststring,
constresourcestring :
freemem(pchar(value.valueptr),value.len+1);
constreal :
dispose(pbestreal(value.valueptr));
constset :
dispose(pnormalset(value.valueptr));
constguid :
dispose(pguid(value.valueptr));
end;
inherited destroy;
end;
procedure tconstsym.buildderef;
begin
if consttyp in [constord,constpointer,constset] then
consttype.buildderef;
end;
procedure tconstsym.deref;
begin
if consttyp in [constord,constpointer,constset] then
consttype.resolve;
end;
procedure tconstsym.ppuwrite(ppufile:tcompilerppufile);
begin
inherited writesym(ppufile);
ppufile.putbyte(byte(consttyp));
case consttyp of
constnil : ;
constord :
begin
ppufile.puttype(consttype);
ppufile.putexprint(value.valueord);
end;
constpointer :
begin
ppufile.puttype(consttype);
ppufile.putptruint(value.valueordptr);
end;
conststring,
constresourcestring :
begin
ppufile.putlongint(value.len);
ppufile.putdata(pchar(value.valueptr)^,value.len);
if consttyp=constresourcestring then
ppufile.putlongint(ResStrIndex);
end;
constreal :
ppufile.putreal(pbestreal(value.valueptr)^);
constset :
begin
ppufile.puttype(consttype);
ppufile.putnormalset(value.valueptr^);
end;
constguid :
ppufile.putdata(value.valueptr^,sizeof(tguid));
else
internalerror(13);
end;
ppufile.writeentry(ibconstsym);
end;
{$ifdef GDB}
function Tconstsym.stabstring:Pchar;
var st : string;
begin
{even GDB v4.16 only now 'i' 'r' and 'e' !!!}
case consttyp of
conststring:
st:='s'''+backspace_quote(octal_quote(strpas(pchar(value.valueptr)),[#0..#9,#11,#12,#14..#31,'''']),['"','\',#10,#13])+'''';
constord:
st:='i'+tostr(value.valueord);
constpointer:
st:='i'+tostr(value.valueordptr);
constreal:
begin
system.str(pbestreal(value.valueptr)^,st);
st := 'r'+st;
end;
{ if we don't know just put zero !! }
else st:='i0';
{***SETCONST}
{constset:;} {*** I don't know what to do with a set.}
{ sets are not recognized by GDB}
{***}
end;
{ valgrind does not support constants }
if cs_gdb_valgrind in aktglobalswitches then
stabstring:=nil
else
stabstring:=stabstr_evaluate('"${name}:c=$1;",${N_FUNCTION},0,${line},0',[st]);
end;
{$endif GDB}
{****************************************************************************
TENUMSYM
****************************************************************************}
constructor tenumsym.create(const n : string;def : tenumdef;v : longint);
begin
inherited create(n);
typ:=enumsym;
definition:=def;
value:=v;
{ check for jumps }
if v>def.max+1 then
def.has_jumps:=true;
{ update low and high }
if def.min>v then
def.setmin(v);
if def.max<v then
def.setmax(v);
order;
{ nextenum:=Tenumsym(def.firstenum);
def.firstenum:=self;}
end;
constructor tenumsym.ppuload(ppufile:tcompilerppufile);
begin
inherited loadsym(ppufile);
typ:=enumsym;
ppufile.getderef(definitionderef);
value:=ppufile.getlongint;
nextenum := Nil;
end;
procedure tenumsym.buildderef;
begin
definitionderef.build(definition);
end;
procedure tenumsym.deref;
begin
definition:=tenumdef(definitionderef.resolve);
order;
end;
procedure tenumsym.order;
var
sym : tenumsym;
begin
sym := tenumsym(definition.firstenum);
if sym = nil then
begin
definition.firstenum := self;
nextenum := nil;
exit;
end;
{ reorder the symbols in increasing value }
if value < sym.value then
begin
nextenum := sym;
definition.firstenum := self;
end
else
begin
while (sym.value <= value) and assigned(sym.nextenum) do
sym := sym.nextenum;
nextenum := sym.nextenum;
sym.nextenum := self;
end;
end;
procedure tenumsym.ppuwrite(ppufile:tcompilerppufile);
begin
inherited writesym(ppufile);
ppufile.putderef(definitionderef);
ppufile.putlongint(value);
ppufile.writeentry(ibenumsym);
end;
{****************************************************************************
TTYPESYM
****************************************************************************}
constructor ttypesym.create(const n : string;const tt : ttype);
begin
inherited create(n);
typ:=typesym;
restype:=tt;
{ register the typesym for the definition }
if assigned(restype.def) and
(restype.def.deftype<>errordef) and
not(assigned(restype.def.typesym)) then
restype.def.typesym:=self;
end;
constructor ttypesym.ppuload(ppufile:tcompilerppufile);
begin
inherited loadsym(ppufile);
typ:=typesym;
ppufile.gettype(restype);
end;
function ttypesym.gettypedef:tdef;
begin
gettypedef:=restype.def;
end;
procedure ttypesym.buildderef;
begin
restype.buildderef;
end;
procedure ttypesym.deref;
begin
restype.resolve;
end;
procedure ttypesym.ppuwrite(ppufile:tcompilerppufile);
begin
inherited writesym(ppufile);
ppufile.puttype(restype);
ppufile.writeentry(ibtypesym);
end;
procedure ttypesym.load_references(ppufile:tcompilerppufile;locals:boolean);
begin
inherited load_references(ppufile,locals);
if (restype.def.deftype=recorddef) then
tstoredsymtable(trecorddef(restype.def).symtable).load_references(ppufile,locals);
if (restype.def.deftype=objectdef) then
tstoredsymtable(tobjectdef(restype.def).symtable).load_references(ppufile,locals);
end;
function ttypesym.write_references(ppufile:tcompilerppufile;locals:boolean):boolean;
var
d : tderef;
begin
d.reset;
if not inherited write_references(ppufile,locals) then
begin
{ write address of this symbol if record or object
even if no real refs are there
because we need it for the symtable }
if (restype.def.deftype in [recorddef,objectdef]) then
begin
d.build(self);
ppufile.putderef(d);
ppufile.writeentry(ibsymref);
end;
end;
write_references:=true;
if (restype.def.deftype=recorddef) then
tstoredsymtable(trecorddef(restype.def).symtable).write_references(ppufile,locals);
if (restype.def.deftype=objectdef) then
tstoredsymtable(tobjectdef(restype.def).symtable).write_references(ppufile,locals);
end;
{$ifdef GDB}
function ttypesym.stabstring : pchar;
var stabchar:string[2];
begin
stabstring:=nil;
if restype.def<>nil then
begin
if restype.def.deftype in tagtypes then
stabchar:='Tt'
else
stabchar:='t';
stabstring:=stabstr_evaluate('"${name}:$1$2",${N_LSYM},0,${line},0',[stabchar,tstoreddef(restype.def).numberstring]);
end;
end;
{$endif GDB}
{****************************************************************************
TSYSSYM
****************************************************************************}
constructor tsyssym.create(const n : string;l : longint);
begin
inherited create(n);
typ:=syssym;
number:=l;
end;
constructor tsyssym.ppuload(ppufile:tcompilerppufile);
begin
inherited loadsym(ppufile);
typ:=syssym;
number:=ppufile.getlongint;
end;
destructor tsyssym.destroy;
begin
inherited destroy;
end;
procedure tsyssym.ppuwrite(ppufile:tcompilerppufile);
begin
inherited writesym(ppufile);
ppufile.putlongint(number);
ppufile.writeentry(ibsyssym);
end;
{****************************************************************************
TRTTISYM
****************************************************************************}
constructor trttisym.create(const n:string;rt:trttitype);
const
prefix : array[trttitype] of string[5]=('$rtti','$init');
begin
inherited create(prefix[rt]+n);
include(symoptions,sp_internal);
typ:=rttisym;
lab:=nil;
rttityp:=rt;
end;
constructor trttisym.ppuload(ppufile:tcompilerppufile);
begin
inherited loadsym(ppufile);
typ:=rttisym;
lab:=nil;
rttityp:=trttitype(ppufile.getbyte);
end;
procedure trttisym.ppuwrite(ppufile:tcompilerppufile);
begin
inherited writesym(ppufile);
ppufile.putbyte(byte(rttityp));
ppufile.writeentry(ibrttisym);
end;
function trttisym.mangledname : string;
const
prefix : array[trttitype] of string[5]=('RTTI_','INIT_');
begin
result:=make_mangledname(prefix[rttityp],owner,Copy(name,5,255));
end;
function trttisym.get_label:tasmsymbol;
begin
{ the label is always a global label }
if not assigned(lab) then
lab:=objectlibrary.newasmsymbol(mangledname,AB_EXTERNAL,AT_DATA);
get_label:=lab;
end;
end.
{
$Log$
Revision 1.189 2004-10-31 21:45:03 peter
* generic tlocation
* move tlocation to cgutils
Revision 1.188 2004/10/15 09:14:17 mazen
- remove $IFDEF DELPHI and related code
- remove $IFDEF FPCPROCVAR and related code
Revision 1.187 2004/10/13 18:47:45 peter
* fix misplaced begin..end for self stabs
* no fpu regable for staticsymtable
Revision 1.186 2004/10/12 14:34:49 peter
* fixed visibility for procsyms
* fixed override check when there was no entry yet
Revision 1.185 2004/10/11 20:48:34 peter
* don't generate stabs for self when it is in a regvar
Revision 1.184 2004/10/11 15:48:15 peter
* small regvar for para fixes
* function tvarsym.is_regvar added
* tvarsym.getvaluesize removed, use getsize instead
Revision 1.183 2004/10/10 21:08:55 peter
* parameter regvar fixes
Revision 1.182 2004/10/10 20:22:53 peter
* symtable allocation rewritten
* loading of parameters to local temps/regs cleanup
* regvar support for parameters
* regvar support for staticsymtable (main body)
Revision 1.181 2004/10/10 09:31:28 peter
regvar ppu writing doesn't affect any crc
Revision 1.180 2004/10/08 17:09:43 peter
* tvarsym.varregable added, split vo_regable from varoptions
Revision 1.179 2004/10/06 19:26:50 jonas
* regvar fixes from Peter
Revision 1.178 2004/10/01 15:22:22 peter
* don't add stabs for register variables
Revision 1.177 2004/09/26 17:45:30 peter
* simple regvar support, not yet finished
Revision 1.176 2004/09/21 17:25:12 peter
* paraloc branch merged
Revision 1.175.4.1 2004/08/31 20:43:06 peter
* paraloc patch
Revision 1.175 2004/08/15 12:06:03 jonas
* add cprefix to procedures which are autoamtically marked as external in
macpas mode
Revision 1.174 2004/06/20 08:55:30 florian
* logs truncated
Revision 1.173 2004/06/16 20:07:09 florian
* dwarf branch merged
Revision 1.172 2004/05/22 23:32:52 peter
quote all low ascii chars in stabs
Revision 1.171 2004/05/11 22:52:48 olle
* Moved import_implicit_external to symsym
Revision 1.170 2004/05/11 18:29:41 olle
+ mode macpas: support for implicit external
Revision 1.169.2.3 2004/05/01 16:02:09 peter
* POINTER_SIZE replaced with sizeof(aint)
* aint,aword,tconst*int moved to globtype
}