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69c95115f6
in cg should be used instead, because they do better error checking on the register used. git-svn-id: trunk@45147 -
72 lines
2.4 KiB
ObjectPascal
72 lines
2.4 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Florian Klaempfl
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Generate Z80 assembler for in memory related nodes
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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 nz80mem;
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{$i fpcdefs.inc}
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interface
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uses
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cgbase,cpubase,
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nmem,ncgmem;
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type
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{ tz80loadparentfpnode }
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tz80loadparentfpnode = class(tcgloadparentfpnode)
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procedure pass_generate_code;override;
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end;
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implementation
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uses
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aasmdata,aasmcpu,
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cgobj;
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{*****************************************************************************
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TZ80LOADPARENTFPNODE
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*****************************************************************************}
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procedure tz80loadparentfpnode.pass_generate_code;
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begin
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inherited pass_generate_code;
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if (location.loc=LOC_REGISTER) and ((location.register=NR_IX) or (location.register=NR_IY)) then
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begin
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cg.getcpuregister(current_asmdata.CurrAsmList,NR_H);
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cg.getcpuregister(current_asmdata.CurrAsmList,NR_L);
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current_asmdata.CurrAsmList.Concat(taicpu.op_reg(A_PUSH,location.register));
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current_asmdata.CurrAsmList.Concat(taicpu.op_reg(A_POP,NR_HL));
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location.register:=cg.getintregister(current_asmdata.CurrAsmList,OS_16);
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cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_8,OS_8,NR_L,location.register);
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cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_L);
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cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_8,OS_8,NR_H,cg.GetNextReg(location.register));
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cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_H);
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end;
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end;
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begin
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cloadparentfpnode:=tz80loadparentfpnode;
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end.
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