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98 lines
2.7 KiB
ObjectPascal
98 lines
2.7 KiB
ObjectPascal
{
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$Id: n386con.pas,v 1.27 2005/02/14 17:13:09 peter Exp $
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Copyright (c) 1998-2002 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 fpcdefs.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,globals,
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defutil,
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cpubase,
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cga,cgx86,cgobj,cgbase,cgutils;
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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 is_number_float(value_real) and (value_real=1.0) or (value_real=0.0) then
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begin
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expectloc:=LOC_FPUREGISTER;
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registersfpu:=1;
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end
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else
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expectloc:=LOC_CREFERENCE;
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end;
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procedure ti386realconstnode.pass_2;
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begin
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if is_number_float(value_real) then
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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_reset(location,LOC_FPUREGISTER,def_cgsize(resulttype.def));
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location.register:=NR_ST;
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tcgx86(cg).inc_fpu_stack;
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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_reset(location,LOC_FPUREGISTER,def_cgsize(resulttype.def));
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location.register:=NR_ST;
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tcgx86(cg).inc_fpu_stack;
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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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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: n386con.pas,v $
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Revision 1.27 2005/02/14 17:13:09 peter
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* truncate log
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}
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