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{
Copyright (c) 1998-2002 by Florian Klaempfl
Generate Z80 assembler for in memory related nodes
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 nz80mem;
{$i fpcdefs.inc}
interface
uses
cgbase,cpubase,
nmem,ncgmem;
type
{ tz80loadparentfpnode }
tz80loadparentfpnode = class(tcgloadparentfpnode)
procedure pass_generate_code;override;
end;
implementation
uses
aasmdata,aasmcpu,
cgobj;
{*****************************************************************************
TZ80LOADPARENTFPNODE
*****************************************************************************}
procedure tz80loadparentfpnode.pass_generate_code;
begin
inherited pass_generate_code;
if (location.loc=LOC_REGISTER) and ((location.register=NR_IX) or (location.register=NR_IY)) then
begin
cg.getcpuregister(current_asmdata.CurrAsmList,NR_H);
cg.getcpuregister(current_asmdata.CurrAsmList,NR_L);
current_asmdata.CurrAsmList.Concat(taicpu.op_reg(A_PUSH,location.register));
current_asmdata.CurrAsmList.Concat(taicpu.op_reg(A_POP,NR_HL));
location.register:=cg.getintregister(current_asmdata.CurrAsmList,OS_16);
cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_8,OS_8,NR_L,location.register);
cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_L);
cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_8,OS_8,NR_H,cg.GetNextReg(location.register));
cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_H);
end;
end;
begin
cloadparentfpnode:=tz80loadparentfpnode;
end.
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