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132 lines
3.6 KiB
ObjectPascal
132 lines
3.6 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2000 by Florian Klaempfl
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Generate i386 assembler for constants
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit n386con;
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{$i defines.inc}
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interface
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uses
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node,ncon,ncgcon;
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type
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ti386realconstnode = class(tcgrealconstnode)
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function pass_1 : tnode;override;
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procedure pass_2;override;
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end;
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implementation
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uses
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systems,
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temp_gen,
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cpubase,
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cga,tgcpu;
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{*****************************************************************************
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TI386REALCONSTNODE
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*****************************************************************************}
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function ti386realconstnode.pass_1 : tnode;
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begin
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result:=nil;
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if (value_real=1.0) or (value_real=0.0) then
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begin
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location.loc:=LOC_FPU;
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registersfpu:=1;
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end
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else
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location.loc:=LOC_MEM;
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end;
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procedure ti386realconstnode.pass_2;
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begin
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if (value_real=1.0) then
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begin
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emit_none(A_FLD1,S_NO);
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location.loc:=LOC_FPU;
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inc(fpuvaroffset);
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end
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else if (value_real=0.0) then
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begin
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emit_none(A_FLDZ,S_NO);
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location.loc:=LOC_FPU;
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inc(fpuvaroffset);
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end
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else
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inherited pass_2;
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end;
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begin
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crealconstnode:=ti386realconstnode;
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end.
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{
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$Log$
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Revision 1.11 2001-09-30 16:17:17 jonas
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* made most constant and mem handling processor independent
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Revision 1.10 2001/08/26 13:36:57 florian
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* some cg reorganisation
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* some PPC updates
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Revision 1.9 2001/07/08 21:00:18 peter
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* various widestring updates, it works now mostly without charset
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mapping supported
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Revision 1.8 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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Revision 1.7 2001/04/02 21:20:37 peter
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* resulttype rewrite
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Revision 1.6 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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Revision 1.5 2000/11/29 00:30:47 florian
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* unused units removed from uses clause
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* some changes for widestrings
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Revision 1.4 2000/11/20 15:31:38 jonas
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* longint typecast to assignment of constant to offset field
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Revision 1.3 2000/11/13 14:44:36 jonas
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* fixes so no more range errors with improved range checking code
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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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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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Revision 1.2 2000/10/14 10:14:48 peter
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* moehrendorf oct 2000 rewrite
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Revision 1.1 2000/09/28 20:48:52 florian
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*** empty log message ***
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}
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