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fpc/compiler/m68k/aasmcpu.pas
Károly Balogh 94281c5589 few fixes and advancements. 68k cg now compiles empty system unit without crashing. 
git-svn-id: trunk@224 -
2005-06-05 23:36:35 +00:00

495 lines
14 KiB
ObjectPascal
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{
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,symtype,
cpubase,cpuinfo,cgbase,cgutils;
const
{ "mov reg,reg" source operand number }
O_MOV_SOURCE = 0;
{ "mov reg,reg" source operand number }
O_MOV_DEST = 1;
type
taicpu = class(tai_cpu_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_regset(op: tasmop; _size : topsize; _op1: tregister;const _op2: tcpuregisterset);
constructor op_regset_reg(op: tasmop; _size : topsize;const _op1: tcpuregisterset; _op2: tregister);
constructor op_ref_regset(op: tasmop; _size : topsize; _op1: treference;const _op2: tcpuregisterset);
constructor op_regset_ref(op: tasmop; _size : topsize;const _op1: tcpuregisterset; _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);
function is_same_reg_move(regtype: Tregistertype):boolean;override;
private
procedure loadregset(opidx:longint;const s:tcpuregisterset);
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;
function spilling_create_load(const ref:treference;r:tregister): tai;
function spilling_create_store(r:tregister; const ref:treference): tai;
implementation
uses
globtype;
{*****************************************************************************
Taicpu Constructors
*****************************************************************************}
procedure taicpu.loadregset(opidx:longint;const s:tcpuregisterset);
var
i : byte;
begin
allocate_oper(opidx+1);
with oper[opidx]^ do
begin
if typ<>top_regset then
clearop(opidx);
new(regset);
regset^:=s;
typ:=top_regset;
for i:=RS_D0 to RS_D7 do
begin
if assigned(add_reg_instruction_hook) and (i in regset^) then
add_reg_instruction_hook(self,newreg(R_INTREGISTER,i,R_SUBWHOLE));
end;
for i:=RS_A0 to RS_SP do
begin
if assigned(add_reg_instruction_hook) and (i in regset^) then
add_reg_instruction_hook(self,newreg(R_ADDRESSREGISTER,i,R_SUBWHOLE));
end;
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_regset(op: tasmop; _size : topsize; _op1: treference;const _op2: tcpuregisterset);
Begin
inherited create(op);
init(_size);
ops:=2;
loadref(0,_op1);
loadregset(1,_op2);
end;
constructor taicpu.op_regset_ref(op: tasmop; _size : topsize;const _op1: tcpuregisterset; _op2: treference);
Begin
inherited create(op);
init(_size);
ops:=2;
loadregset(0,_op1);
loadref(1,_op2);
End;
constructor taicpu.op_reg_regset(op: tasmop; _size : topsize; _op1: tregister;const _op2: tcpuregisterset);
Begin
inherited create(op);
init(_size);
ops:=2;
loadreg(0,_op1);
loadregset(1,_op2);
end;
constructor taicpu.op_regset_reg(op: tasmop; _size : topsize;const _op1: tcpuregisterset; _op2: tregister);
Begin
inherited create(op);
init(_size);
ops:=2;
loadregset(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;
function taicpu.is_same_reg_move(regtype: Tregistertype):boolean;
begin
result:=(((opcode=A_MOVE) or (opcode=A_EXG)) and
(regtype = R_INTREGISTER) and
(ops=2) and
(oper[0]^.typ=top_reg) and
(oper[1]^.typ=top_reg) and
(oper[0]^.reg=oper[1]^.reg)
) or
((opcode=A_FMOVE) and
(regtype = R_FPUREGISTER) and
(ops=2) and
(oper[0]^.typ=top_reg) and
(oper[1]^.typ=top_reg) and
(oper[0]^.reg=oper[1]^.reg)
);
end;
function spilling_create_load(const ref:treference;r:tregister): tai;
begin
{
case getregtype(r) of
R_INTREGISTER :
result:=taicpu.op_ref_reg(A_LD,ref,r);
R_FPUREGISTER :
begin
case getsubreg(r) of
R_SUBFS :
result:=taicpu.op_ref_reg(A_LDF,ref,r);
R_SUBFD :
result:=taicpu.op_ref_reg(A_LDD,ref,r);
else
internalerror(200401042);
end;
end
else
internalerror(200401041);
end;}
end;
function spilling_create_store(r:tregister; const ref:treference): tai;
begin
{case getregtype(r) of
R_INTREGISTER :
result:=taicpu.op_reg_ref(A_ST,r,ref);
R_FPUREGISTER :
begin
case getsubreg(r) of
R_SUBFS :
result:=taicpu.op_reg_ref(A_STF,r,ref);
R_SUBFD :
result:=taicpu.op_reg_ref(A_STD,r,ref);
else
internalerror(200401042);
end;
end
else
internalerror(200401041);
end;}
end;
procedure InitAsm;
begin
end;
procedure DoneAsm;
begin
end;
end.
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