freepascal.compiler/compiler/m68k/aasmcpu.pas

{
    $Id$
    Copyright (c) 1998-2001 by Florian Klaempfl and Pierre Muller

    m68k family assembler instructions

    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 aasmcpu;

{$i fpcdefs.inc}

interface

uses
  cclasses,aasmtai,
  aasmbase,globals,verbose,
  cpubase,cpuinfo;


const
  { "mov reg,reg" source operand number }
  O_MOV_SOURCE = 0;
  { "mov reg,reg" source operand number }
  O_MOV_DEST = 1;
type

  taicpu = class(taicpu_abstract)
     opsize : topsize;
     constructor op_none(op : tasmop;_size : topsize);

     constructor op_reg(op : tasmop;_size : topsize;_op1 : tregister);
     constructor op_const(op : tasmop;_size : topsize;_op1 : longint);
     constructor op_ref(op : tasmop;_size : topsize;_op1 : treference);

     constructor op_reg_reg(op : tasmop;_size : topsize;_op1,_op2 : tregister);
     constructor op_reg_ref(op : tasmop;_size : topsize;_op1 : tregister;_op2 : treference);
     constructor op_reg_const(op:tasmop; _size: topsize; _op1: tregister; _op2: longint);

     constructor op_const_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister);
     constructor op_const_const(op : tasmop;_size : topsize;_op1,_op2 : longint);
     constructor op_const_ref(op : tasmop;_size : topsize;_op1 : longint;_op2 : treference);

     constructor op_ref_reg(op : tasmop;_size : topsize;_op1 : treference;_op2 : tregister);
     { this is only allowed if _op1 is an int value (_op1^.isintvalue=true) }
     constructor op_ref_ref(op : tasmop;_size : topsize;_op1,_op2 : treference);

     constructor op_reg_reg_reg(op : tasmop;_size : topsize;_op1,_op2,_op3 : tregister);
     constructor op_const_reg_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister;_op3 : tregister);
     constructor op_const_ref_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : treference;_op3 : tregister);
     constructor op_reg_reg_ref(op : tasmop;_size : topsize;_op1,_op2 : tregister; _op3 : treference);
     constructor op_const_reg_ref(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister;_op3 : treference);

     constructor op_reg_reglist(op: tasmop; _size : topsize; _op1: tregister;_op2: Tsupregset);
     constructor op_reglist_reg(op: tasmop; _size : topsize; _op1: Tsupregset; _op2: tregister);

     constructor op_ref_reglist(op: tasmop; _size : topsize; _op1: treference;_op2: Tsupregset);
     constructor op_reglist_ref(op: tasmop; _size : topsize; _op1: Tsupregset; _op2: treference);

     { this is for Jmp instructions }
     constructor op_cond_sym(op : tasmop;cond:TAsmCond;_size : topsize;_op1 : tasmsymbol);

     constructor op_sym(op : tasmop;_size : topsize;_op1 : tasmsymbol);
     { for DBxx opcodes }
     constructor op_reg_sym(op: tasmop; _size : topsize; _op1: tregister; _op2 :tasmsymbol);
     constructor op_sym_ofs_reg(op : tasmop;_size : topsize;_op1 : tasmsymbol;_op1ofs:longint;_op2 : tregister);

     constructor op_sym_ofs(op : tasmop;_size : topsize;_op1 : tasmsymbol;_op1ofs:longint);
     constructor op_sym_ofs_ref(op : tasmop;_size : topsize;_op1 : tasmsymbol;_op1ofs:longint;const _op2 : treference);

  private
     procedure loadreglist(opidx:longint;r:Tsupregset);
     procedure init(_size : topsize); { this need to be called by all constructor }
  end;


  tai_align = class(tai_align_abstract)
        { nothing to add }
  end;

  procedure InitAsm;
  procedure DoneAsm;


implementation


{*****************************************************************************
                                 Taicpu Constructors
*****************************************************************************}



   procedure taicpu.loadreglist(opidx:longint;r:Tsupregset);
      begin
        if opidx>=ops then
         ops:=opidx+1;
        with oper[opidx] do
         begin
           registerlist:=r;
           typ:=top_reglist;
         end;
      end;


    procedure taicpu.init(_size : topsize);
      begin
         typ:=ait_instruction;
         is_jmp:=false;
         opsize:=_size;
         ops:=0;
      end;


    constructor taicpu.op_none(op : tasmop;_size : topsize);
      begin
         inherited create(op);;
         init(_size);
      end;


    constructor taicpu.op_reg(op : tasmop;_size : topsize;_op1 : tregister);
      begin
         inherited create(op);;
         init(_size);
         ops:=1;
         loadreg(0,_op1);
      end;


    constructor taicpu.op_const(op : tasmop;_size : topsize;_op1 : longint);
      begin
         inherited create(op);;
         init(_size);
         ops:=1;
         loadconst(0,aword(_op1));
      end;


    constructor taicpu.op_ref(op : tasmop;_size : topsize;_op1 : treference);
      begin
         inherited create(op);;
         init(_size);
         ops:=1;
         loadref(0,_op1);
      end;


    constructor taicpu.op_reg_reg(op : tasmop;_size : topsize;_op1,_op2 : tregister);
      begin
         inherited create(op);;
         init(_size);
         ops:=2;
         loadreg(0,_op1);
         loadreg(1,_op2);
      end;


    constructor taicpu.op_reg_const(op:tasmop; _size: topsize; _op1: tregister; _op2: longint);
      begin
         inherited create(op);;
         init(_size);
         ops:=2;
         loadreg(0,_op1);
         loadconst(1,aword(_op2));
      end;


    constructor taicpu.op_reg_ref(op : tasmop;_size : topsize;_op1 : tregister;_op2 : treference);
      begin
         inherited create(op);;
         init(_size);
         ops:=2;
         loadreg(0,_op1);
         loadref(1,_op2);
      end;


    constructor taicpu.op_const_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister);
      begin
         inherited create(op);;
         init(_size);
         ops:=2;
         loadconst(0,aword(_op1));
         loadreg(1,_op2);
      end;


    constructor taicpu.op_const_const(op : tasmop;_size : topsize;_op1,_op2 : longint);
      begin
         inherited create(op);;
         init(_size);
         ops:=2;
         loadconst(0,aword(_op1));
         loadconst(1,aword(_op2));
      end;


    constructor taicpu.op_const_ref(op : tasmop;_size : topsize;_op1 : longint;_op2 : treference);
      begin
         inherited create(op);;
         init(_size);
         ops:=2;
         loadconst(0,aword(_op1));
         loadref(1,_op2);
      end;


    constructor taicpu.op_ref_reg(op : tasmop;_size : topsize;_op1 : treference;_op2 : tregister);
      begin
         inherited create(op);;
         init(_size);
         ops:=2;
         loadref(0,_op1);
         loadreg(1,_op2);
      end;


    constructor taicpu.op_ref_ref(op : tasmop;_size : topsize;_op1,_op2 : treference);
      begin
         inherited create(op);;
         init(_size);
         ops:=2;
         loadref(0,_op1);
         loadref(1,_op2);
      end;


    constructor taicpu.op_reg_reg_reg(op : tasmop;_size : topsize;_op1,_op2,_op3 : tregister);
      begin
         inherited create(op);;
         init(_size);
         ops:=3;
         loadreg(0,_op1);
         loadreg(1,_op2);
         loadreg(2,_op3);
      end;

    constructor taicpu.op_const_reg_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister;_op3 : tregister);
      begin
         inherited create(op);;
         init(_size);
         ops:=3;
         loadconst(0,aword(_op1));
         loadreg(1,_op2);
         loadreg(2,_op3);
      end;

    constructor taicpu.op_reg_reg_ref(op : tasmop;_size : topsize;_op1,_op2 : tregister;_op3 : treference);
      begin
         inherited create(op);;
         init(_size);
         ops:=3;
         loadreg(0,_op1);
         loadreg(1,_op2);
         loadref(2,_op3);
      end;


    constructor taicpu.op_const_ref_reg(op : tasmop;_size : topsize;_op1 : longint;_op2 : treference;_op3 : tregister);
      begin
         inherited create(op);;
         init(_size);
         ops:=3;
         loadconst(0,aword(_op1));
         loadref(1,_op2);
         loadreg(2,_op3);
      end;


    constructor taicpu.op_const_reg_ref(op : tasmop;_size : topsize;_op1 : longint;_op2 : tregister;_op3 : treference);
      begin
         inherited create(op);;
         init(_size);
         ops:=3;
         loadconst(0,aword(_op1));
         loadreg(1,_op2);
         loadref(2,_op3);
      end;


   constructor taicpu.op_ref_reglist(op: tasmop; _size : topsize; _op1: treference;_op2: Tsupregset);
     Begin
        inherited create(op);;
        init(_size);
        ops:=2;
        loadref(0,_op1);
        loadreglist(1,_op2);
     end;

   constructor taicpu.op_reglist_ref(op: tasmop; _size : topsize; _op1: Tsupregset; _op2: treference);
     Begin
        inherited create(op);;
        init(_size);
        ops:=2;
        loadreglist(0,_op1);
        loadref(1,_op2);
     End;



   constructor taicpu.op_reg_reglist(op: tasmop; _size : topsize; _op1: tregister;_op2: Tsupregset);
     Begin
        inherited create(op);;
        init(_size);
        ops:=2;
        loadreg(0,_op1);
        loadreglist(1,_op2);
     end;


   constructor taicpu.op_reglist_reg(op: tasmop; _size : topsize; _op1: Tsupregset; _op2: tregister);
     Begin
        inherited create(op);;
        init(_size);
        ops:=2;
        loadreglist(0,_op1);
        loadreg(1,_op2);
     End;




    constructor taicpu.op_sym(op : tasmop;_size : topsize;_op1 : tasmsymbol);
      begin
         inherited create(op);;
         init(_size);
         ops:=1;
         loadsymbol(0,_op1,0);
      end;


     constructor taicpu.op_reg_sym(op: tasmop; _size : topsize; _op1: tregister; _op2 :tasmsymbol);
      begin
         inherited create(op);
         init(_size);
         ops:=2;
         loadreg(0,_op1);
         loadsymbol(1,_op2,0);
      end;


    constructor taicpu.op_sym_ofs_ref(op : tasmop;_size : topsize;_op1 : tasmsymbol;_op1ofs:longint;const _op2 : treference);
      begin
         inherited create(op);
         init(_size);
         ops:=2;
         loadsymbol(0,_op1,_op1ofs);
         loadref(1,_op2);
      end;


    constructor taicpu.op_sym_ofs(op : tasmop;_size : topsize;_op1 : tasmsymbol;_op1ofs:longint);
      begin
         inherited create(op);
         init(_size);
         ops:=1;
         loadsymbol(0,_op1,_op1ofs);
      end;

    constructor taicpu.op_sym_ofs_reg(op : tasmop;_size : topsize;_op1 : tasmsymbol;_op1ofs:longint;_op2 : tregister);
      begin
         inherited create(op);;
         init(_size);
         ops:=2;
         if ((op >= A_DBCC) and (op <= A_DBF))
          or ((op >= A_FDBEQ) and (op <= A_FDBNGLE)) then
           begin
             loadreg(0,_op2);
             loadsymbol(1,_op1,_op1ofs);
           end
          else
           begin
             loadsymbol(0,_op1,_op1ofs);
             loadreg(1,_op2);
           end;
      end;


    constructor taicpu.op_cond_sym(op : tasmop;cond:TAsmCond;_size : topsize;_op1 : tasmsymbol);
      begin
         inherited create(op);
         init(_size);
         condition:=cond;
         ops:=1;
         loadsymbol(0,_op1,0);
      end;



    procedure InitAsm;
      begin
      end;


    procedure DoneAsm;
      begin
      end;

end.
{
  $Log$
  Revision 1.9  2003-06-14 14:53:50  jonas
    * fixed newra cycle for x86
    * added constants for indicating source and destination operands of the
      "move reg,reg" instruction to aasmcpu (and use those in rgobj)

  Revision 1.8  2003/02/19 22:00:16  daniel
    * Code generator converted to new register notation
    - Horribily outdated todo.txt removed

  Revision 1.7  2002/12/14 15:02:03  carl
    * maxoperands -> max_operands (for portability in rautils.pas)
    * fix some range-check errors with loadconst
    + add ncgadd unit to m68k
    * some bugfix of a_param_reg with LOC_CREFERENCE

  Revision 1.6  2002/11/30 23:33:02  carl
    * merges from Pierre's fixes in m68k fixes branch

  Revision 1.5  2002/09/07 15:25:11  peter
    * old logs removed and tabs fixed

  Revision 1.4  2002/08/13 18:58:54  carl
    + m68k problems with cvs fixed?()!

  Revision 1.2  2002/08/12 15:08:43  carl
    + stab register indexes for powerpc (moved from gdb to cpubase)
    + tprocessor enumeration moved to cpuinfo
    + linker in target_info is now a class
    * many many updates for m68k (will soon start to compile)
    - removed some ifdef or correct them for correct cpu

  Revision 1.1  2002/07/29 17:51:32  carl
    + restart m68k support


}