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			1053 lines
		
	
	
		
			28 KiB
		
	
	
	
		
			ObjectPascal
		
	
	
	
	
	
			
		
		
	
	
			1053 lines
		
	
	
		
			28 KiB
		
	
	
	
		
			ObjectPascal
		
	
	
	
	
	
| {
 | |
|     Copyright (c) 1998-2002 by Florian Klaempfl, Pierre Muller
 | |
| 
 | |
|     This unit handles the symbol tables
 | |
| 
 | |
|     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 symtype;
 | |
| 
 | |
| {$i fpcdefs.inc}
 | |
| 
 | |
| interface
 | |
| 
 | |
|     uses
 | |
|       { common }
 | |
|       cutils,
 | |
|       cclasses,
 | |
|       { global }
 | |
|       globtype,globals,constexp,
 | |
|       { symtable }
 | |
|       symconst,symbase,
 | |
|       { aasm }
 | |
|       aasmbase,ppu,cpuinfo
 | |
|       ;
 | |
| 
 | |
|     type
 | |
| {************************************************
 | |
|                 Required Forwards
 | |
| ************************************************}
 | |
| 
 | |
|       tsym = class;
 | |
|       Tcompilerppufile=class;
 | |
| 
 | |
| 
 | |
| {************************************************
 | |
|                      TDef
 | |
| ************************************************}
 | |
| 
 | |
|       tgeTSymtable = (gs_none,gs_record,gs_local,gs_para);
 | |
| 
 | |
|       tdef = class(TDefEntry)
 | |
|          typesym    : tsym;  { which type the definition was generated this def }
 | |
|          { maybe it's useful to merge the dwarf and stabs debugging info with some hacking }
 | |
|          { dwarf debugging }
 | |
|          dwarf_lab : tasmsymbol;
 | |
|          dwarf_ref_lab : tasmsymbol;
 | |
|          { stabs debugging }
 | |
|          stab_number : word;
 | |
|          dbg_state   : tdefdbgstatus;
 | |
|          defoptions  : tdefoptions;
 | |
|          defstates   : tdefstates;
 | |
|          constructor create(dt:tdeftyp);
 | |
|          procedure buildderef;virtual;abstract;
 | |
|          procedure buildderefimpl;virtual;abstract;
 | |
|          procedure deref;virtual;abstract;
 | |
|          procedure derefimpl;virtual;abstract;
 | |
|          function  typename:string;
 | |
|          function  GetTypeName:string;virtual;
 | |
|          function  mangledparaname:string;
 | |
|          function  getmangledparaname:string;virtual;
 | |
|          function  rtti_mangledname(rt:trttitype):string;virtual;abstract;
 | |
|          function  size:aint;virtual;abstract;
 | |
|          function  packedbitsize:aint;virtual;
 | |
|          function  alignment:shortint;virtual;abstract;
 | |
|          function  getvardef:longint;virtual;abstract;
 | |
|          function  getparentdef:tdef;virtual;
 | |
|          function  geTSymtable(t:tgeTSymtable):TSymtable;virtual;
 | |
|          function  is_publishable:boolean;virtual;abstract;
 | |
|          function  needs_inittable:boolean;virtual;abstract;
 | |
|          function  is_related(def:tdef):boolean;virtual;
 | |
|          procedure ChangeOwner(st:TSymtable);
 | |
|       end;
 | |
| 
 | |
| {************************************************
 | |
|                      TSym
 | |
| ************************************************}
 | |
| 
 | |
|       { this object is the base for all symbol objects }
 | |
| 
 | |
|       { tsym }
 | |
| 
 | |
|       tsym = class(TSymEntry)
 | |
|       protected
 | |
|       public
 | |
|          fileinfo   : tfileposinfo;
 | |
|          symoptions : tsymoptions;
 | |
|          refs       : longint;
 | |
|          reflist    : TLinkedList;
 | |
|          isdbgwritten : boolean;
 | |
|          constructor create(st:tsymtyp;const aname:string);
 | |
|          destructor  destroy;override;
 | |
|          function  mangledname:string; virtual;
 | |
|          procedure buildderef;virtual;
 | |
|          procedure deref;virtual;
 | |
|          { currobjdef is the object def to assume, this is necessary for protected and
 | |
|            private,
 | |
|            context is the object def we're really in, this is for the strict stuff
 | |
|          }
 | |
|          function is_visible_for_object(currobjdef:tdef;context : tdef):boolean;virtual;
 | |
|          procedure ChangeOwner(st:TSymtable);
 | |
|          procedure IncRefCount;
 | |
|          procedure IncRefCountBy(AValue : longint);
 | |
|          procedure MaybeCreateRefList;
 | |
|          procedure AddRef;
 | |
|       end;
 | |
| 
 | |
|       tsymarr = array[0..maxlongint div sizeof(pointer)-1] of tsym;
 | |
|       psymarr = ^tsymarr;
 | |
| 
 | |
| {************************************************
 | |
|                    TDeref
 | |
| ************************************************}
 | |
| 
 | |
|       tderef = object
 | |
|         dataidx : longint;
 | |
|         procedure reset;
 | |
|         procedure build(s:TObject);
 | |
|         function  resolve:TObject;
 | |
|      end;
 | |
| 
 | |
| {************************************************
 | |
|                    tpropaccesslist
 | |
| ************************************************}
 | |
| 
 | |
|       ppropaccesslistitem = ^tpropaccesslistitem;
 | |
|       tpropaccesslistitem = record
 | |
|         sltype : tsltype;
 | |
|         next   : ppropaccesslistitem;
 | |
|         case byte of
 | |
|           0 : (sym : tsym; symderef : tderef);
 | |
|           1 : (value  : TConstExprInt; valuedef: tdef; valuedefderef:tderef);
 | |
|           2 : (def: tdef; defderef:tderef);
 | |
|       end;
 | |
| 
 | |
|       tpropaccesslist = class
 | |
|         procdef  : tdef;
 | |
|         procdefderef : tderef;
 | |
|         firstsym,
 | |
|         lastsym  : ppropaccesslistitem;
 | |
|         constructor create;
 | |
|         destructor  destroy;override;
 | |
|         function  empty:boolean;
 | |
|         procedure addsym(slt:tsltype;p:tsym);
 | |
|         procedure addconst(slt:tsltype;v:TConstExprInt;d:tdef);
 | |
|         procedure addtype(slt:tsltype;d:tdef);
 | |
|         procedure addsymderef(slt:tsltype;d:tderef);
 | |
|         procedure addconstderef(slt:tsltype;v:TConstExprInt;d:tderef);
 | |
|         procedure addtypederef(slt:tsltype;d:tderef);
 | |
|         procedure clear;
 | |
|         procedure resolve;
 | |
|         procedure buildderef;
 | |
|       end;
 | |
| 
 | |
| {************************************************
 | |
|                 Tcompilerppufile
 | |
| ************************************************}
 | |
|        tcompilerppufile=class(tppufile)
 | |
|        public
 | |
|          procedure checkerror;
 | |
|          procedure getguid(var g: tguid);
 | |
|          function  getexprint:Tconstexprint;
 | |
|          function  getptruint:TConstPtrUInt;
 | |
|          procedure getposinfo(var p:tfileposinfo);
 | |
|          procedure getderef(var d:tderef);
 | |
|          function  getpropaccesslist:tpropaccesslist;
 | |
|          function  getasmsymbol:tasmsymbol;
 | |
|          procedure putguid(const g: tguid);
 | |
|          procedure putexprint(const v:tconstexprint);
 | |
|          procedure PutPtrUInt(v:TConstPtrUInt);
 | |
|          procedure putposinfo(const p:tfileposinfo);
 | |
|          procedure putderef(const d:tderef);
 | |
|          procedure putpropaccesslist(p:tpropaccesslist);
 | |
|          procedure putasmsymbol(s:tasmsymbol);
 | |
|        end;
 | |
| 
 | |
| {$ifdef MEMDEBUG}
 | |
|     var
 | |
|       memmanglednames,
 | |
|       memprocpara,
 | |
|       memprocparast,
 | |
|       memproclocalst,
 | |
|       memprocnodetree : tmemdebug;
 | |
| {$endif MEMDEBUG}
 | |
| 
 | |
|     const
 | |
|        current_object_option : tsymoptions = [sp_public];
 | |
| 
 | |
|     function  FindUnitSymtable(st:TSymtable):TSymtable;
 | |
| 
 | |
| 
 | |
| implementation
 | |
| 
 | |
|     uses
 | |
|        crefs,
 | |
|        verbose,
 | |
|        fmodule
 | |
|        ;
 | |
| 
 | |
| {****************************************************************************
 | |
|                                 Utils
 | |
| ****************************************************************************}
 | |
| 
 | |
|     function FindUnitSymtable(st:TSymtable):TSymtable;
 | |
|       begin
 | |
|         result:=nil;
 | |
|         repeat
 | |
|           if not assigned(st) then
 | |
|            internalerror(200602034);
 | |
|           case st.symtabletype of
 | |
|             localmacrosymtable,
 | |
|             exportedmacrosymtable,
 | |
|             staticsymtable,
 | |
|             globalsymtable :
 | |
|               begin
 | |
|                 result:=st;
 | |
|                 exit;
 | |
|               end;
 | |
|             recordsymtable,
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|             localsymtable,
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|             parasymtable,
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|             ObjectSymtable :
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|               st:=st.defowner.owner;
 | |
|             else
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|               internalerror(200602035);
 | |
|           end;
 | |
|         until false;
 | |
|       end;
 | |
| 
 | |
| 
 | |
| {****************************************************************************
 | |
|                                 Tdef
 | |
| ****************************************************************************}
 | |
| 
 | |
|     constructor tdef.create(dt:tdeftyp);
 | |
|       begin
 | |
|          inherited create;
 | |
|          typ:=dt;
 | |
|          owner := nil;
 | |
|          typesym := nil;
 | |
|          defoptions:=[];
 | |
|          dbg_state:=dbg_state_unused;
 | |
|          stab_number:=0;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tdef.typename:string;
 | |
|       begin
 | |
|         if assigned(typesym) and
 | |
|            not(typ in [procvardef,procdef]) and
 | |
|            (typesym.realname[1]<>'$') then
 | |
|           result:=typesym.realname
 | |
|         else
 | |
|           result:=GetTypeName;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tdef.GetTypeName : string;
 | |
|       begin
 | |
|          GetTypeName:='<unknown type>'
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tdef.mangledparaname:string;
 | |
|       begin
 | |
|         if assigned(typesym) then
 | |
|          mangledparaname:=typesym.name
 | |
|         else
 | |
|          mangledparaname:=getmangledparaname;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tdef.getmangledparaname:string;
 | |
|       begin
 | |
|          result:='<unknown type>';
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tdef.getparentdef:tdef;
 | |
|       begin
 | |
|         result:=nil;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tdef.geTSymtable(t:tgeTSymtable):TSymtable;
 | |
|       begin
 | |
|         result:=nil;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tdef.is_related(def:tdef):boolean;
 | |
|       begin
 | |
|         result:=false;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tdef.packedbitsize:aint;
 | |
|       begin
 | |
|         result:=size * 8;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tdef.ChangeOwner(st:TSymtable);
 | |
|       begin
 | |
| //        if assigned(Owner) then
 | |
| //          Owner.DefList.List[i]:=nil;
 | |
|         Owner:=st;
 | |
|         Owner.DefList.Add(self);
 | |
|       end;
 | |
| 
 | |
| 
 | |
| {****************************************************************************
 | |
|                           TSYM (base for all symtypes)
 | |
| ****************************************************************************}
 | |
| 
 | |
|     constructor tsym.create(st:tsymtyp;const aname:string);
 | |
|       begin
 | |
|          inherited CreateNotOwned;
 | |
|          realname:=aname;
 | |
|          typ:=st;
 | |
|          RefList:=nil;
 | |
|          symoptions:=[];
 | |
|          fileinfo:=current_tokenpos;
 | |
|          isdbgwritten := false;
 | |
|          symoptions:=current_object_option;
 | |
|       end;
 | |
| 
 | |
|     destructor  Tsym.destroy;
 | |
|       begin
 | |
|         if assigned(RefList) then
 | |
|           RefList.Free;
 | |
|         inherited Destroy;
 | |
|       end;
 | |
| 
 | |
|     procedure Tsym.IncRefCount;
 | |
|       begin
 | |
|         inc(refs);
 | |
|         if cs_browser in current_settings.moduleswitches then
 | |
|           begin
 | |
|             MaybeCreateRefList;
 | |
|             AddRef;
 | |
|           end;
 | |
|       end;
 | |
| 
 | |
|     procedure Tsym.IncRefCountBy(AValue : longint);
 | |
|       begin
 | |
|         inc(refs,AValue);
 | |
|       end;
 | |
| 
 | |
|     procedure Tsym.MaybeCreateRefList;
 | |
|       begin
 | |
|         if not assigned(reflist) then
 | |
|           reflist:=TRefLinkedList.create;
 | |
|       end;
 | |
| 
 | |
|     procedure Tsym.AddRef;
 | |
|       var
 | |
|         RefItem: TRefItem;
 | |
|       begin
 | |
|         RefItem:=TRefItem.Create(current_tokenpos);
 | |
|         RefList.Concat(RefItem);
 | |
|       end;
 | |
| 
 | |
|     procedure Tsym.buildderef;
 | |
|       begin
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure Tsym.deref;
 | |
|       begin
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tsym.mangledname : string;
 | |
|       begin
 | |
|         internalerror(200204171);
 | |
|         result:='';
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tsym.is_visible_for_object(currobjdef:Tdef;context : tdef):boolean;
 | |
|       begin
 | |
|         is_visible_for_object:=false;
 | |
| 
 | |
|         { private symbols are allowed when we are in the same
 | |
|           module as they are defined }
 | |
|         if (sp_private in symoptions) and
 | |
|            assigned(owner.defowner) and
 | |
|            (owner.defowner.owner.symtabletype in [globalsymtable,staticsymtable]) and
 | |
|            (not owner.defowner.owner.iscurrentunit) then
 | |
|           exit;
 | |
| 
 | |
|         if (sp_strictprivate in symoptions) then
 | |
|           begin
 | |
|             result:=assigned(currobjdef) and
 | |
|               (context=tdef(owner.defowner));
 | |
|             exit;
 | |
|           end;
 | |
| 
 | |
|         if (sp_strictprotected in symoptions) then
 | |
|           begin
 | |
|             result:=assigned(context) and
 | |
|               context.is_related(tdef(owner.defowner));
 | |
|             exit;
 | |
|           end;
 | |
| 
 | |
|         { protected symbols are visible in the module that defines them and
 | |
|           also visible to related objects }
 | |
|         if (sp_protected in symoptions) and
 | |
|            (
 | |
|             (
 | |
|              assigned(owner.defowner) and
 | |
|              (owner.defowner.owner.symtabletype in [globalsymtable,staticsymtable]) and
 | |
|              (not owner.defowner.owner.iscurrentunit)
 | |
|             ) and
 | |
|             not(
 | |
|                 assigned(currobjdef) and
 | |
|                 (currobjdef.owner.symtabletype in [globalsymtable,staticsymtable]) and
 | |
|                 (currobjdef.owner.iscurrentunit) and
 | |
|                 currobjdef.is_related(tdef(owner.defowner))
 | |
|                )
 | |
|            ) then
 | |
|           exit;
 | |
| 
 | |
|         is_visible_for_object:=true;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tsym.ChangeOwner(st:TSymtable);
 | |
|       begin
 | |
| //        if assigned(Owner) then
 | |
| //          Owner.SymList.List.List^[i].Data:=nil;
 | |
|         Owner:=st;
 | |
|         inherited ChangeOwner(Owner.SymList);
 | |
|       end;
 | |
| 
 | |
| 
 | |
| {****************************************************************************
 | |
|                                  tpropaccesslist
 | |
| ****************************************************************************}
 | |
| 
 | |
|     constructor tpropaccesslist.create;
 | |
|       begin
 | |
|         procdef:=nil; { needed for procedures }
 | |
|         firstsym:=nil;
 | |
|         lastsym:=nil;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     destructor tpropaccesslist.destroy;
 | |
|       begin
 | |
|         clear;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tpropaccesslist.empty:boolean;
 | |
|       begin
 | |
|         empty:=(firstsym=nil);
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tpropaccesslist.clear;
 | |
|       var
 | |
|         hp : ppropaccesslistitem;
 | |
|       begin
 | |
|         while assigned(firstsym) do
 | |
|          begin
 | |
|            hp:=firstsym;
 | |
|            firstsym:=firstsym^.next;
 | |
|            dispose(hp);
 | |
|          end;
 | |
|         firstsym:=nil;
 | |
|         lastsym:=nil;
 | |
|         procdef:=nil;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tpropaccesslist.addsym(slt:tsltype;p:tsym);
 | |
|       var
 | |
|         hp : ppropaccesslistitem;
 | |
|       begin
 | |
|         new(hp);
 | |
|         fillchar(hp^,sizeof(tpropaccesslistitem),0);
 | |
|         hp^.sltype:=slt;
 | |
|         hp^.sym:=p;
 | |
|         hp^.symderef.reset;
 | |
|         if assigned(lastsym) then
 | |
|          lastsym^.next:=hp
 | |
|         else
 | |
|          firstsym:=hp;
 | |
|         lastsym:=hp;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tpropaccesslist.addconst(slt:tsltype;v:TConstExprInt;d:tdef);
 | |
|       var
 | |
|         hp : ppropaccesslistitem;
 | |
|       begin
 | |
|         new(hp);
 | |
|         fillchar(hp^,sizeof(tpropaccesslistitem),0);
 | |
|         hp^.sltype:=slt;
 | |
|         hp^.value:=v;
 | |
|         hp^.valuedef:=d;
 | |
|         hp^.valuedefderef.reset;
 | |
|         if assigned(lastsym) then
 | |
|          lastsym^.next:=hp
 | |
|         else
 | |
|          firstsym:=hp;
 | |
|         lastsym:=hp;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tpropaccesslist.addtype(slt:tsltype;d:tdef);
 | |
|       var
 | |
|         hp : ppropaccesslistitem;
 | |
|       begin
 | |
|         new(hp);
 | |
|         fillchar(hp^,sizeof(tpropaccesslistitem),0);
 | |
|         hp^.sltype:=slt;
 | |
|         hp^.def:=d;
 | |
|         hp^.defderef.reset;
 | |
|         if assigned(lastsym) then
 | |
|          lastsym^.next:=hp
 | |
|         else
 | |
|          firstsym:=hp;
 | |
|         lastsym:=hp;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tpropaccesslist.addsymderef(slt:tsltype;d:tderef);
 | |
|       begin
 | |
|         addsym(slt,nil);
 | |
|         lastsym^.symderef:=d;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tpropaccesslist.addconstderef(slt:tsltype;v:TConstExprInt;d:tderef);
 | |
|       begin
 | |
|         addconst(slt,v,nil);
 | |
|         lastsym^.valuedefderef:=d;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tpropaccesslist.addtypederef(slt:tsltype;d:tderef);
 | |
|       begin
 | |
|         addtype(slt,nil);
 | |
|         lastsym^.defderef:=d;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tpropaccesslist.resolve;
 | |
|       var
 | |
|         hp : ppropaccesslistitem;
 | |
|       begin
 | |
|         procdef:=tdef(procdefderef.resolve);
 | |
|         hp:=firstsym;
 | |
|         while assigned(hp) do
 | |
|          begin
 | |
|            case hp^.sltype of
 | |
|              sl_call,
 | |
|              sl_load,
 | |
|              sl_subscript :
 | |
|                hp^.sym:=tsym(hp^.symderef.resolve);
 | |
|              sl_absolutetype,
 | |
|              sl_typeconv :
 | |
|                hp^.def:=tdef(hp^.defderef.resolve);
 | |
|              sl_vec:
 | |
|                hp^.valuedef:=tdef(hp^.valuedefderef.resolve);
 | |
|              else
 | |
|               internalerror(200110205);
 | |
|            end;
 | |
|            hp:=hp^.next;
 | |
|          end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tpropaccesslist.buildderef;
 | |
|       var
 | |
|         hp : ppropaccesslistitem;
 | |
|       begin
 | |
|         procdefderef.build(procdef);
 | |
|         hp:=firstsym;
 | |
|         while assigned(hp) do
 | |
|          begin
 | |
|            case hp^.sltype of
 | |
|              sl_call,
 | |
|              sl_load,
 | |
|              sl_subscript :
 | |
|                hp^.symderef.build(hp^.sym);
 | |
|              sl_absolutetype,
 | |
|              sl_typeconv :
 | |
|                hp^.defderef.build(hp^.def);
 | |
|              sl_vec:
 | |
|                hp^.valuedefderef.build(hp^.valuedef);
 | |
|              else
 | |
|               internalerror(200110205);
 | |
|            end;
 | |
|            hp:=hp^.next;
 | |
|          end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
| {****************************************************************************
 | |
|                                 Tderef
 | |
| ****************************************************************************}
 | |
| 
 | |
| 
 | |
|     procedure tderef.reset;
 | |
|       begin
 | |
|         dataidx:=-1;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tderef.build(s:TObject);
 | |
|       var
 | |
|         len  : byte;
 | |
|         st   : TSymtable;
 | |
|         data : array[0..255] of byte;
 | |
|         idx : word;
 | |
|       begin
 | |
|         { skip length byte }
 | |
|         len:=1;
 | |
| 
 | |
|         if assigned(s) then
 | |
|          begin
 | |
| {$warning TODO ugly hack}
 | |
|            if s is tsym then
 | |
|              st:=FindUnitSymtable(tsym(s).owner)
 | |
|            else
 | |
|              st:=FindUnitSymtable(tdef(s).owner);
 | |
|            if not st.iscurrentunit then
 | |
|              begin
 | |
|                { register that the unit is needed for resolving }
 | |
|                data[len]:=ord(deref_unit);
 | |
|                idx:=current_module.derefidx_unit(st.moduleid);
 | |
|                data[len+1]:=idx shr 8 and $ff;
 | |
|                data[len+2]:=idx and $ff;
 | |
|                inc(len,3);
 | |
|              end;
 | |
|            if s is tsym then
 | |
|              begin
 | |
|                data[len]:=ord(deref_symid);
 | |
|                data[len+1]:=tsym(s).symid shr 24 and $ff;
 | |
|                data[len+2]:=tsym(s).symid shr 16 and $ff;
 | |
|                data[len+3]:=tsym(s).symid shr 8 and $ff;
 | |
|                data[len+4]:=tsym(s).symid and $ff;
 | |
|                inc(len,5);
 | |
|              end
 | |
|            else
 | |
|              begin
 | |
|                data[len]:=ord(deref_defid);
 | |
|                data[len+1]:=tdef(s).defid shr 24 and $ff;
 | |
|                data[len+2]:=tdef(s).defid shr 16 and $ff;
 | |
|                data[len+3]:=tdef(s).defid shr 8 and $ff;
 | |
|                data[len+4]:=tdef(s).defid and $ff;
 | |
|                inc(len,5);
 | |
|              end;
 | |
|          end
 | |
|         else
 | |
|          begin
 | |
|            { nil pointer }
 | |
|            data[len]:=ord(deref_nil);
 | |
|            inc(len);
 | |
|          end;
 | |
| 
 | |
|         { store data length in first byte }
 | |
|         data[0]:=len-1;
 | |
| 
 | |
|         { store index and write to derefdata }
 | |
|         dataidx:=current_module.derefdata.size;
 | |
|         current_module.derefdata.write(data,len);
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tderef.resolve:TObject;
 | |
|       var
 | |
|         pm     : tmodule;
 | |
|         typ    : tdereftype;
 | |
|         idx    : longint;
 | |
|         i      : aint;
 | |
|         len    : byte;
 | |
|         data   : array[0..255] of byte;
 | |
|       begin
 | |
|         result:=nil;
 | |
|         { not initialized or error }
 | |
|         if dataidx<0 then
 | |
|           internalerror(200306067);
 | |
|         { read data }
 | |
|         current_module.derefdata.seek(dataidx);
 | |
|         if current_module.derefdata.read(len,1)<>1 then
 | |
|           internalerror(200310221);
 | |
|         if len>0 then
 | |
|           begin
 | |
|             if current_module.derefdata.read(data,len)<>len then
 | |
|               internalerror(200310222);
 | |
|           end;
 | |
|         { process data }
 | |
|         pm:=current_module;
 | |
|         i:=0;
 | |
|         while (i<len) do
 | |
|           begin
 | |
|             typ:=tdereftype(data[i]);
 | |
|             inc(i);
 | |
|             case typ of
 | |
|               deref_unit :
 | |
|                 begin
 | |
|                   idx:=(data[i] shl 8) or data[i+1];
 | |
|                   inc(i,2);
 | |
|                   pm:=current_module.resolve_unit(idx);
 | |
|                 end;
 | |
|               deref_defid :
 | |
|                 begin
 | |
|                   idx:=longint((data[i] shl 24) or (data[i+1] shl 16) or (data[i+2] shl 8) or data[i+3]);
 | |
|                   inc(i,4);
 | |
|                   result:=tdef(pm.deflist[idx]);
 | |
|                 end;
 | |
|               deref_symid :
 | |
|                 begin
 | |
|                   idx:=longint((data[i] shl 24) or (data[i+1] shl 16) or (data[i+2] shl 8) or data[i+3]);
 | |
|                   inc(i,4);
 | |
|                   result:=tsym(pm.symlist[idx]);
 | |
|                 end;
 | |
|               deref_nil :
 | |
|                 begin
 | |
|                   result:=nil;
 | |
|                   { Only allowed when no other deref is available }
 | |
|                   if len<>1 then
 | |
|                     internalerror(200306232);
 | |
|                 end;
 | |
|               else
 | |
|                 internalerror(200212277);
 | |
|             end;
 | |
|           end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
| {*****************************************************************************
 | |
|                             TCompilerPPUFile
 | |
| *****************************************************************************}
 | |
| 
 | |
|     procedure tcompilerppufile.checkerror;
 | |
|       begin
 | |
|         if error then
 | |
|          Message(unit_f_ppu_read_error);
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tcompilerppufile.getguid(var g: tguid);
 | |
|       begin
 | |
|         longint(g.d1):=getlongint;
 | |
|         g.d2:=getword;
 | |
|         g.d3:=getword;
 | |
|         getdata(g.d4,sizeof(g.d4));
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tcompilerppufile.getexprint:Tconstexprint;
 | |
| 
 | |
|     begin
 | |
|       getexprint.overflow:=false;
 | |
|       getexprint.signed:=boolean(getbyte);
 | |
|       getexprint.svalue:=getint64;
 | |
|     end;
 | |
| 
 | |
| 
 | |
|     function tcompilerppufile.getPtrUInt:TConstPtrUInt;
 | |
|       begin
 | |
|         if sizeof(TConstPtrUInt)=8 then
 | |
|           result:=tconstptruint(getint64)
 | |
|         else
 | |
|           result:=TConstPtrUInt(getlongint);
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tcompilerppufile.getposinfo(var p:tfileposinfo);
 | |
|       var
 | |
|         info : byte;
 | |
|       begin
 | |
|         {
 | |
|           info byte layout in bits:
 | |
|           0-1 - amount of bytes for fileindex
 | |
|           2-3 - amount of bytes for line
 | |
|           4-5 - amount of bytes for column
 | |
|         }
 | |
|         info:=getbyte;
 | |
|         case (info and $03) of
 | |
|          0 : p.fileindex:=getbyte;
 | |
|          1 : p.fileindex:=getword;
 | |
|          2 : p.fileindex:=(getbyte shl 16) or getword;
 | |
|          3 : p.fileindex:=getlongint;
 | |
|         end;
 | |
|         case ((info shr 2) and $03) of
 | |
|          0 : p.line:=getbyte;
 | |
|          1 : p.line:=getword;
 | |
|          2 : p.line:=(getbyte shl 16) or getword;
 | |
|          3 : p.line:=getlongint;
 | |
|         end;
 | |
|         case ((info shr 4) and $03) of
 | |
|          0 : p.column:=getbyte;
 | |
|          1 : p.column:=getword;
 | |
|          2 : p.column:=(getbyte shl 16) or getword;
 | |
|          3 : p.column:=getlongint;
 | |
|         end;
 | |
|         p.moduleindex:=current_module.unit_index;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tcompilerppufile.getderef(var d:tderef);
 | |
|       begin
 | |
|         d.dataidx:=getlongint;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function tcompilerppufile.getpropaccesslist:tpropaccesslist;
 | |
|       var
 | |
|         hderef : tderef;
 | |
|         slt : tsltype;
 | |
|         idx : longint;
 | |
|         p   : tpropaccesslist;
 | |
|       begin
 | |
|         p:=tpropaccesslist.create;
 | |
|         getderef(p.procdefderef);
 | |
|         repeat
 | |
|           slt:=tsltype(getbyte);
 | |
|           case slt of
 | |
|             sl_none :
 | |
|               break;
 | |
|             sl_call,
 | |
|             sl_load,
 | |
|             sl_subscript :
 | |
|               begin
 | |
|                 getderef(hderef);
 | |
|                 p.addsymderef(slt,hderef);
 | |
|               end;
 | |
|             sl_absolutetype,
 | |
|             sl_typeconv :
 | |
|               begin
 | |
|                 getderef(hderef);
 | |
|                 p.addtypederef(slt,hderef);
 | |
|               end;
 | |
|             sl_vec :
 | |
|               begin
 | |
|                 idx:=getlongint;
 | |
|                 getderef(hderef);
 | |
|                 p.addconstderef(slt,idx,hderef);
 | |
|               end;
 | |
|             else
 | |
|               internalerror(200110204);
 | |
|           end;
 | |
|         until false;
 | |
|         getpropaccesslist:=tpropaccesslist(p);
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     function  tcompilerppufile.getasmsymbol:tasmsymbol;
 | |
|       begin
 | |
|         getlongint;
 | |
|         getasmsymbol:=nil;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tcompilerppufile.putposinfo(const p:tfileposinfo);
 | |
|       var
 | |
|         oldcrc : boolean;
 | |
|         info   : byte;
 | |
|       begin
 | |
|         { posinfo is not relevant for changes in PPU }
 | |
|         oldcrc:=do_crc;
 | |
|         do_crc:=false;
 | |
|         {
 | |
|           info byte layout in bits:
 | |
|           0-1 - amount of bytes for fileindex
 | |
|           2-3 - amount of bytes for line
 | |
|           4-5 - amount of bytes for column
 | |
|         }
 | |
|         info:=0;
 | |
|         { calculate info byte }
 | |
|         if (p.fileindex>$ff) then
 | |
|          begin
 | |
|            if (p.fileindex<=$ffff) then
 | |
|             info:=info or $1
 | |
|            else
 | |
|             if (p.fileindex<=$ffffff) then
 | |
|              info:=info or $2
 | |
|            else
 | |
|             info:=info or $3;
 | |
|           end;
 | |
|         if (p.line>$ff) then
 | |
|          begin
 | |
|            if (p.line<=$ffff) then
 | |
|             info:=info or $4
 | |
|            else
 | |
|             if (p.line<=$ffffff) then
 | |
|              info:=info or $8
 | |
|            else
 | |
|             info:=info or $c;
 | |
|           end;
 | |
|         if (p.column>$ff) then
 | |
|          begin
 | |
|            if (p.column<=$ffff) then
 | |
|             info:=info or $10
 | |
|            else
 | |
|             if (p.column<=$ffffff) then
 | |
|              info:=info or $20
 | |
|            else
 | |
|             info:=info or $30;
 | |
|           end;
 | |
|         { write data }
 | |
|         putbyte(info);
 | |
|         case (info and $03) of
 | |
|          0 : putbyte(p.fileindex);
 | |
|          1 : putword(p.fileindex);
 | |
|          2 : begin
 | |
|                putbyte(p.fileindex shr 16);
 | |
|                putword(p.fileindex and $ffff);
 | |
|              end;
 | |
|          3 : putlongint(p.fileindex);
 | |
|         end;
 | |
|         case ((info shr 2) and $03) of
 | |
|          0 : putbyte(p.line);
 | |
|          1 : putword(p.line);
 | |
|          2 : begin
 | |
|                putbyte(p.line shr 16);
 | |
|                putword(p.line and $ffff);
 | |
|              end;
 | |
|          3 : putlongint(p.line);
 | |
|         end;
 | |
|         case ((info shr 4) and $03) of
 | |
|          0 : putbyte(p.column);
 | |
|          1 : putword(p.column);
 | |
|          2 : begin
 | |
|                putbyte(p.column shr 16);
 | |
|                putword(p.column and $ffff);
 | |
|              end;
 | |
|          3 : putlongint(p.column);
 | |
|         end;
 | |
|         do_crc:=oldcrc;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tcompilerppufile.putguid(const g: tguid);
 | |
|       begin
 | |
|         putlongint(longint(g.d1));
 | |
|         putword(g.d2);
 | |
|         putword(g.d3);
 | |
|         putdata(g.d4,sizeof(g.d4));
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure Tcompilerppufile.putexprint(const v:Tconstexprint);
 | |
| 
 | |
|     begin
 | |
|       if v.overflow then
 | |
|         internalerror(200706102);
 | |
|       putbyte(byte(v.signed));
 | |
|       putint64(v.svalue);
 | |
|     end;
 | |
| 
 | |
| 
 | |
|     procedure tcompilerppufile.PutPtrUInt(v:TConstPtrUInt);
 | |
|       begin
 | |
|         if sizeof(TConstPtrUInt)=8 then
 | |
|           putint64(int64(v))
 | |
|         else if sizeof(TConstPtrUInt)=4 then
 | |
|           putlongint(longint(v))
 | |
|         else
 | |
|           internalerror(2002082601);
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tcompilerppufile.putderef(const d:tderef);
 | |
|       var
 | |
|         oldcrc : boolean;
 | |
|       begin
 | |
|         oldcrc:=do_crc;
 | |
|         do_crc:=false;
 | |
|         putlongint(d.dataidx);
 | |
|         do_crc:=oldcrc;
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tcompilerppufile.putpropaccesslist(p:tpropaccesslist);
 | |
|       var
 | |
|         hp : ppropaccesslistitem;
 | |
|       begin
 | |
|         putderef(p.procdefderef);
 | |
|         hp:=p.firstsym;
 | |
|         while assigned(hp) do
 | |
|          begin
 | |
|            putbyte(byte(hp^.sltype));
 | |
|            case hp^.sltype of
 | |
|              sl_call,
 | |
|              sl_load,
 | |
|              sl_subscript :
 | |
|                putderef(hp^.symderef);
 | |
|              sl_absolutetype,
 | |
|              sl_typeconv :
 | |
|                putderef(hp^.defderef);
 | |
|              sl_vec :
 | |
|                begin
 | |
|                  putlongint(int64(hp^.value));
 | |
|                  putderef(hp^.valuedefderef);
 | |
|                end;
 | |
|              else
 | |
|               internalerror(200110205);
 | |
|            end;
 | |
|            hp:=hp^.next;
 | |
|          end;
 | |
|         putbyte(byte(sl_none));
 | |
|       end;
 | |
| 
 | |
| 
 | |
|     procedure tcompilerppufile.putasmsymbol(s:tasmsymbol);
 | |
|       begin
 | |
|         putlongint(0);
 | |
|       end;
 | |
| 
 | |
| {$ifdef MEMDEBUG}
 | |
| initialization
 | |
|   memmanglednames:=TMemDebug.create('Manglednames');
 | |
|   memmanglednames.stop;
 | |
|   memprocpara:=TMemDebug.create('ProcPara');
 | |
|   memprocpara.stop;
 | |
|   memprocparast:=TMemDebug.create('ProcParaSt');
 | |
|   memprocparast.stop;
 | |
|   memproclocalst:=TMemDebug.create('ProcLocalSt');
 | |
|   memproclocalst.stop;
 | |
|   memprocnodetree:=TMemDebug.create('ProcNodeTree');
 | |
|   memprocnodetree.stop;
 | |
| 
 | |
| finalization
 | |
|   memmanglednames.free;
 | |
|   memprocpara.free;
 | |
|   memprocparast.free;
 | |
|   memproclocalst.free;
 | |
|   memprocnodetree.free;
 | |
| {$endif MEMDEBUG}
 | |
| 
 | |
| end.
 | |
| 
 | 
