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https://gitlab.com/freepascal.org/fpc/source.git
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472 lines
13 KiB
ObjectPascal
472 lines
13 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2001 by Florian Klaempfl and Pierre Muller
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m68k family assembler instructions
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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 aasmcpu;
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{$i fpcdefs.inc}
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interface
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uses
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cclasses,aasmtai,
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aasmbase,globals,verbose,
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cpubase;
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type
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taicpu = class(taicpu_abstract)
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opsize : topsize;
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constructor op_none(op : tasmop;_size : topsize);
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constructor op_reg(op : tasmop;_size : topsize;_op1 : tregister);
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constructor op_const(op : tasmop;_size : topsize;_op1 : longint);
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constructor op_ref(op : tasmop;_size : topsize;_op1 : preference);
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constructor op_reg_reg(op : tasmop;_size : topsize;_op1,_op2 : tregister);
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constructor op_reg_ref(op : tasmop;_size : topsize;_op1 : tregister;_op2 : preference);
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constructor op_reg_const(op:tasmop; _size: topsize; _op1: tregister; _op2: longint);
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constructor op_const_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister);
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constructor op_const_const(op : tasmop;_size : topsize;_op1,_op2 : longint);
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constructor op_const_ref(op : tasmop;_size : topsize;_op1 : longint;_op2 : preference);
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constructor op_ref_reg(op : tasmop;_size : topsize;_op1 : preference;_op2 : tregister);
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{ this is only allowed if _op1 is an int value (_op1^.isintvalue=true) }
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constructor op_ref_ref(op : tasmop;_size : topsize;_op1,_op2 : preference);
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constructor op_reg_reg_reg(op : tasmop;_size : topsize;_op1,_op2,_op3 : tregister);
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constructor op_const_reg_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister;_op3 : tregister);
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constructor op_const_ref_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : preference;_op3 : tregister);
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constructor op_reg_reg_ref(op : tasmop;_size : topsize;_op1,_op2 : tregister; _op3 : preference);
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constructor op_const_reg_ref(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister;_op3 : preference);
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constructor op_reg_reglist(op: tasmop; _size : topsize; _op1: tregister;_op2: tregisterlist);
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constructor op_reglist_reg(op: tasmop; _size : topsize; _op1: tregisterlist; _op2: tregister);
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constructor op_ref_reglist(op: tasmop; _size : topsize; _op1: preference;_op2: tregisterlist);
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constructor op_reglist_ref(op: tasmop; _size : topsize; _op1: tregisterlist; _op2: preference);
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{ this is for Jmp instructions }
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constructor op_cond_sym(op : tasmop;cond:TAsmCond;_size : topsize;_op1 : tasmsymbol);
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constructor op_sym(op : tasmop;_size : topsize;_op1 : tasmsymbol);
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constructor op_sym_ofs_reg(op : tasmop;_size : topsize;_op1 : tasmsymbol;_op1ofs:longint;_op2 : tregister);
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procedure loadreglist(opidx:longint;r:pregisterlist);
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destructor destroy;
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private
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procedure init(op : tasmop;_size : topsize); { this need to be called by all constructor }
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end;
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{*****************************************************************************
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Labeled instruction
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*****************************************************************************}
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pai_labeled = ^tai_labeled;
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tai_labeled = object(tai)
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opcode : tasmop;
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register : tregister;
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lab : pasmlabel;
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sym : tasmsymbol;
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constructor init(op : tasmop; l : pasmlabel);
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constructor init_sym(op : tasmop; asym : tasmsymbol);
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constructor init_reg(op: tasmop; l : pasmlabel; reg: tregister);
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constructor init_reg_sym(op : tasmop; asym: tasmsymbol; reg :tregister);
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destructor done;virtual;
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end;
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implementation
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{*****************************************************************************
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Taicpu Constructors
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*****************************************************************************}
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procedure taicpu.loadreglist(opidx:longint;r:pregisterlist);
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begin
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if opidx>=ops then
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ops:=opidx+1;
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with oper[opidx] do
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begin
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if typ=top_ref then
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disposereference(ref);
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registerlist:=r;
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typ:=top_reglist;
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end;
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end;
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procedure taicpu.init(_size : topsize);
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begin
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typ:=ait_instruction;
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is_jmp:=false;
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opcode:=op;
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opsize:=_size;
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ops:=0;
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end;
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constructor taicpu.op_none(op : tasmop;_size : topsize);
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begin
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inherited init;
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init(op,_size);
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end;
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constructor taicpu.op_reg(op : tasmop;_size : topsize;_op1 : tregister);
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begin
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inherited init;
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init(op,_size);
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ops:=1;
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loadreg(0,_op1);
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end;
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constructor taicpu.op_const(op : tasmop;_size : topsize;_op1 : longint);
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begin
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inherited init;
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init(op,_size);
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ops:=1;
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loadconst(0,_op1);
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end;
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constructor taicpu.op_ref(op : tasmop;_size : topsize;_op1 : preference);
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begin
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inherited init;
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init(op,_size);
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ops:=1;
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loadref(0,_op1);
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end;
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constructor taicpu.op_reg_reg(op : tasmop;_size : topsize;_op1,_op2 : tregister);
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begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadreg(0,_op1);
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loadreg(1,_op2);
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end;
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constructor taicpu.op_reg_const(op:tasmop; _size: topsize; _op1: tregister; _op2: longint);
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begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadreg(0,_op1);
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loadconst(1,_op2);
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end;
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constructor taicpu.op_reg_ref(op : tasmop;_size : topsize;_op1 : tregister;_op2 : preference);
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begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadreg(0,_op1);
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loadref(1,_op2);
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end;
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constructor taicpu.op_const_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister);
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begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadconst(0,_op1);
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loadreg(1,_op2);
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end;
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constructor taicpu.op_const_const(op : tasmop;_size : topsize;_op1,_op2 : longint);
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begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadconst(0,_op1);
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loadconst(1,_op2);
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end;
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constructor taicpu.op_const_ref(op : tasmop;_size : topsize;_op1 : longint;_op2 : preference);
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begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadconst(0,_op1);
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loadref(1,_op2);
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end;
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constructor taicpu.op_ref_reg(op : tasmop;_size : topsize;_op1 : preference;_op2 : tregister);
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begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadref(0,_op1);
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loadreg(1,_op2);
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end;
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constructor taicpu.op_ref_ref(op : tasmop;_size : topsize;_op1,_op2 : preference);
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begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadref(0,_op1);
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loadref(1,_op2);
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end;
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constructor taicpu.op_reg_reg_reg(op : tasmop;_size : topsize;_op1,_op2,_op3 : tregister);
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begin
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inherited init;
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init(op,_size);
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ops:=3;
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loadreg(0,_op1);
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loadreg(1,_op2);
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loadreg(2,_op3);
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end;
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constructor taicpu.op_const_reg_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister;_op3 : tregister);
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begin
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inherited init;
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init(op,_size);
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ops:=3;
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loadconst(0,_op1);
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loadreg(1,_op2);
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loadreg(2,_op3);
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end;
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constructor taicpu.op_reg_reg_ref(op : tasmop;_size : topsize;_op1,_op2 : tregister;_op3 : preference);
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begin
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inherited init;
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init(op,_size);
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ops:=3;
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loadreg(0,_op1);
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loadreg(1,_op2);
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loadref(2,_op3);
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end;
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constructor taicpu.op_const_ref_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : preference;_op3 : tregister);
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begin
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inherited init;
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init(op,_size);
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ops:=3;
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loadconst(0,_op1);
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loadref(1,_op2);
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loadreg(2,_op3);
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end;
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constructor taicpu.op_const_reg_ref(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister;_op3 : preference);
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begin
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inherited init;
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init(op,_size);
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ops:=3;
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loadconst(0,_op1);
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loadreg(1,_op2);
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loadref(2,_op3);
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end;
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constructor taicpu.op_ref_reglist(op: tasmop; _size : topsize; _op1: preference;_op2: tregisterlist);
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Begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadref(0,_op1);
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loadreglist(1,newreglist(_op2));
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end;
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constructor taicpu.op_reglist_ref(op: tasmop; _size : topsize; _op1: tregisterlist; _op2: preference);
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Begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadreglist(0,newreglist(_op1));
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loadref(1,_op2);
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End;
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constructor taicpu.op_reg_reglist(op: tasmop; _size : topsize; _op1: tregister;_op2: tregisterlist);
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Begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadreg(0,_op1);
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loadreglist(1,newreglist(_op2));
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end;
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constructor taicpu.op_reglist_reg(op: tasmop; _size : topsize; _op1: tregisterlist; _op2: tregister);
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Begin
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inherited init;
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init(op,_size);
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ops:=2;
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loadreglist(0,newreglist(_op1));
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loadreg(1,_op2);
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End;
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constructor taicpu.op_sym(op : tasmop;_size : topsize;_op1 : tasmsymbol);
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begin
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inherited init;
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init(op,_size);
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ops:=1;
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loadsymbol(0,_op1,0);
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end;
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constructor taicpu.op_sym_ofs_reg(op : tasmop;_size : topsize;_op1 : tasmsymbol;_op1ofs:longint;_op2 : tregister);
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begin
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inherited init;
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init(op,_size);
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ops:=2;
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if ((op >= A_DBCC) and (op <= A_DBF))
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or ((op >= A_FDBEQ) and (op <= A_FBDNGLE)) then
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begin
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loadreg(0,_op2);
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loadsymbol(1,_op1,_op1ofs);
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end
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else
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begin
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loadsymbol(0,_op1,_op1ofs);
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loadreg(1,_op2);
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end;
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end;
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constructor taicpu.op_cond_sym(op : tasmop;cond:TAsmCond;_size : topsize;_op1 : tasmsymbol);
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begin
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inherited create(op);
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init(_size);
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condition:=cond;
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ops:=1;
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loadsymbol(0,_op1,0);
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end;
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destructor taicpu.destroy;
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var
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i : longint;
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begin
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for i:=ops-1 downto 0 do
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if (oper[i].typ=top_ref) then
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dispose(oper[i].ref);
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inherited destroy;
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end;
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{****************************************************************************
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TAI_LABELED
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****************************************************************************}
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constructor tai_labeled.init(op : tasmop; l : pasmlabel);
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begin
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inherited init;
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sym := nil;
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opcode := op;
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lab := l;
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register := R_NO;
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typ:=ait_labeled_instruction;
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inc(lab^.refs);
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end;
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constructor tai_labeled.init_sym(op : tasmop; asym: tasmsymbol);
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begin
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inherited init;
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sym:= asym;
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lab := nil;
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opcode := op;
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register := R_NO;
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typ:=ait_labeled_instruction;
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{ inc(lab^.refs);}
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end;
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constructor tai_labeled.init_reg_sym(op : tasmop; asym: tasmsymbol; reg :tregister);
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begin
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inherited init;
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sym:= asym;
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lab := nil;
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opcode := op;
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register := reg;
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typ:=ait_labeled_instruction;
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{ inc(lab^.refs);}
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end;
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constructor tai_labeled.init_reg(op : tasmop; l : pasmlabel; reg: tregister);
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begin
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inherited init;
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sym := nil;
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lab := l;
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opcode := op;
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register := reg;
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typ:=ait_labeled_instruction;
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inc(lab^.refs);
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end;
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destructor tai_labeled.done;
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begin
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if assigned(lab) then
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dec(lab^.refs);
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inherited done;
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end;
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procedure InitAsm;
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begin
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end;
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procedure DoneAsm;
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begin
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end;
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end.
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{
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$Log$
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Revision 1.1 2002-07-29 17:51:32 carl
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+ restart m68k support
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}
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