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-{
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- $Id$
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- Copyright (c) 1998-2000 by Florian Klaempfl
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-
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- This unit handles the codegeneration pass
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-
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- This program is free software; you can redistribute it and/or modify
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- it under the terms of the GNU General Public License as published by
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- the Free Software Foundation; either version 2 of the License, or
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- (at your option) any later version.
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-
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- This program is distributed in the hope that it will be useful,
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- but WITHOUT ANY WARRANTY; without even the implied warranty of
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- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- GNU General Public License for more details.
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-
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- You should have received a copy of the GNU General Public License
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- along with this program; if not, write to the Free Software
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- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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-
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- ****************************************************************************
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-}
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-unit n386bas;
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-
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-{$i defines.inc}
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-
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- interface
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-
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- uses
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- node,nbas;
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-
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- type
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- ti386statementnode = class(tstatementnode)
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- procedure pass_2;override;
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- end;
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-
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- ti386blocknode = class(tblocknode)
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- procedure pass_2;override;
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- end;
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-
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- ti386asmnode = class(tasmnode)
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- procedure pass_2;override;
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- end;
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-
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- implementation
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-
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- uses
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- globals,
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- aasm,cpubase,cpuasm,
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- symconst,symsym,
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- pass_2,tgcpu,
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- cgai386;
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-
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- procedure ti386asmnode.pass_2;
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-
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- procedure ReLabel(var p:tasmsymbol);
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- begin
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- if p.proclocal then
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- begin
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- if not assigned(p.altsymbol) then
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- begin
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- p.GenerateAltSymbol;
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- UsedAsmSymbolListInsert(p);
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- end;
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- p:=p.altsymbol;
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- end;
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- end;
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-
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- var
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- hp,hp2 : tai;
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- localfixup,parafixup,
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- i : longint;
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- skipnode : boolean;
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- begin
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- if inlining_procedure then
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- begin
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- CreateUsedAsmSymbolList;
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- localfixup:=aktprocsym.definition.localst.address_fixup;
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- parafixup:=aktprocsym.definition.parast.address_fixup;
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- hp:=tai(p_asm.first);
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- while assigned(hp) do
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- begin
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- hp2:=tai(hp.getcopy);
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- skipnode:=false;
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- case hp2.typ of
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- ait_label :
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- begin
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- { regenerate the labels by setting altsymbol }
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- ReLabel(tasmsymbol(tai_label(hp2).l));
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- end;
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- ait_const_rva,
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- ait_const_symbol :
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- begin
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- ReLabel(tai_const_symbol(hp2).sym);
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- end;
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- ait_instruction :
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- begin
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-{$ifdef i386}
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- { fixup the references }
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- for i:=1 to taicpu(hp2).ops do
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- begin
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- with taicpu(hp2).oper[i-1] do
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- begin
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- case typ of
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- top_ref :
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- begin
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- case ref^.options of
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- ref_parafixup :
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- ref^.offsetfixup:=parafixup;
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- ref_localfixup :
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- ref^.offsetfixup:=localfixup;
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- end;
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- if assigned(ref^.symbol) then
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- ReLabel(ref^.symbol);
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- end;
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- top_symbol :
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- begin
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- ReLabel(sym);
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- end;
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- end;
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- end;
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- end;
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-{$endif i386}
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- end;
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- ait_marker :
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- begin
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- { it's not an assembler block anymore }
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- if (tai_marker(hp2).kind in [AsmBlockStart, AsmBlockEnd]) then
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- skipnode:=true;
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- end;
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- else
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- end;
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- if not skipnode then
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- exprasmList.concat(hp2)
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- else
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- hp2.free;
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- hp:=tai(hp.next);
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- end;
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- { restore used symbols }
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- UsedAsmSymbolListResetAltSym;
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- DestroyUsedAsmSymbolList;
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- end
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- else
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- begin
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- { if the routine is an inline routine, then we must hold a copy
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- because it can be necessary for inlining later }
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- if (pocall_inline in aktprocsym.definition.proccalloptions) then
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- exprasmList.concatlistcopy(p_asm)
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- else
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- exprasmList.concatlist(p_asm);
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- end;
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- if not (nf_object_preserved in flags) then
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- begin
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-{$ifdef i386}
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- maybe_loadself;
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-{$endif}
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-{$ifdef m68k}
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- maybe_loada5;
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-{$endif}
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- end;
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- end;
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-
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- procedure ti386statementnode.pass_2;
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-
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- var
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- hp : tnode;
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-
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- begin
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- hp:=self;
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- while assigned(hp) do
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- begin
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- if assigned(tstatementnode(hp).right) then
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- begin
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- cleartempgen;
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- {!!!!!!
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- oldrl:=temptoremove;
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- temptoremove:=new(TLinkedList,init);
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- }
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- secondpass(tstatementnode(hp).right);
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- { !!!!!!!
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- some temporary data which can't be released elsewhere
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- removetemps(exprasmlist,temptoremove);
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- dispose(temptoremove,done);
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- temptoremove:=oldrl;
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- }
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- end;
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- hp:=tstatementnode(hp).left;
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- end;
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- end;
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-
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-
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- procedure ti386blocknode.pass_2;
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- begin
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- { do second pass on left node }
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- if assigned(left) then
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- secondpass(left);
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- end;
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-
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-
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-begin
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- cstatementnode:=ti386statementnode;
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- cblocknode:=ti386blocknode;
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- casmnode:=ti386asmnode;
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-end.
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-{
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- $Log$
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- Revision 1.7 2001-04-13 01:22:18 peter
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- * symtable change to classes
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- * range check generation and errors fixed, make cycle DEBUG=1 works
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- * memory leaks fixed
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-
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- Revision 1.6 2001/04/02 21:20:36 peter
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- * resulttype rewrite
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-
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- Revision 1.5 2000/12/25 00:07:32 peter
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- + new tlinkedlist class (merge of old tstringqueue,tcontainer and
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- tlinkedlist objects)
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-
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- Revision 1.4 2000/11/29 00:30:46 florian
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- * unused units removed from uses clause
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- * some changes for widestrings
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-
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- Revision 1.3 2000/11/04 14:25:23 florian
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- + merged Attila's changes for interfaces, not tested yet
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-
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- Revision 1.2 2000/10/31 22:02:56 peter
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- * symtable splitted, no real code changes
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-
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- Revision 1.1 2000/10/15 09:33:31 peter
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- * moved n386*.pas to i386/ cpu_target dir
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-
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- Revision 1.1 2000/10/14 10:14:48 peter
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- * moehrendorf oct 2000 rewrite
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-
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-}
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