fpc/compiler/m68k/aasmcpu.pas
2017-05-25 22:35:12 +00:00

591 lines
18 KiB
ObjectPascal

{
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,aasmdata,aasmsym,
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_sym)
opsize : topsize;
procedure loadregset(opidx:longint; const dataregs,addrregs,fpuregs:tcpuregisterset);
procedure loadregpair(opidx:longint; const _reghi,_reglo: tregister);
procedure loadrealconst(opidx:longint; const value_real: bestreal);
constructor op_none(op : tasmop);
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_realconst_reg(op : tasmop;_size : topsize;_op1: bestreal;_op2: tregister);
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);
{ this is used for mulx/divx/remx regpair generation }
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,_op3 : tregister);
constructor op_ref_reg_reg(op : tasmop;_size : topsize;_op1 : treference; _op2,_op3 : tregister);
constructor op_reg_regset(op: tasmop; _size : topsize; _op1: tregister;const _op2data,_op2addr,_op2fpu: tcpuregisterset);
constructor op_regset_reg(op: tasmop; _size : topsize;const _op1data,_op1addr,_op1fpu: tcpuregisterset; _op2: tregister);
constructor op_ref_regset(op: tasmop; _size : topsize; _op1: treference;const _op2data,_op2addr,_op2fpu: tcpuregisterset);
constructor op_regset_ref(op: tasmop; _size : topsize;const _op1data,_op1addr,_op1fpu: 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;
function spilling_get_operation_type(opnr: longint): topertype;override;
function spilling_get_operation_type_ref(opnr: longint; reg: tregister): topertype;override;
private
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):Taicpu;
function spilling_create_store(r:tregister; const ref:treference):Taicpu;
implementation
uses
globtype;
{*****************************************************************************
Taicpu Constructors
*****************************************************************************}
procedure taicpu.loadregset(opidx:longint; const dataregs,addrregs,fpuregs:tcpuregisterset);
var
i : byte;
begin
allocate_oper(opidx+1);
with oper[opidx]^ do
begin
if typ<>top_regset then
clearop(opidx);
dataregset:=dataregs;
addrregset:=addrregs;
fpuregset:=fpuregs;
typ:=top_regset;
for i:=RS_D0 to RS_D7 do
begin
if assigned(add_reg_instruction_hook) and (i in dataregset) 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 addrregset) then
add_reg_instruction_hook(self,newreg(R_ADDRESSREGISTER,i,R_SUBWHOLE));
end;
for i:=RS_FP0 to RS_FP7 do
begin
if assigned(add_reg_instruction_hook) and (i in fpuregset) then
add_reg_instruction_hook(self,newreg(R_FPUREGISTER,i,R_SUBWHOLE));
end;
end;
end;
procedure taicpu.loadregpair(opidx:longint; const _reghi,_reglo: tregister);
begin
allocate_oper(opidx+1);
with oper[opidx]^ do
begin
if typ<>top_regpair then
clearop(opidx);
typ:=top_regpair;
reghi:=_reghi;
reglo:=_reglo;
end;
end;
procedure taicpu.loadrealconst(opidx:longint; const value_real: bestreal);
begin
allocate_oper(opidx+1);
with oper[opidx]^ do
begin
if typ<>top_realconst then
clearop(opidx);
val_real:=value_real;
typ:=top_realconst;
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);
begin
inherited create(op);
init(S_NO);
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_realconst_reg(op : tasmop;_size : topsize;_op1 : bestreal;_op2 : tregister);
begin
inherited create(op);
init(_size);
ops:=2;
loadrealconst(0,_op1);
loadreg(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,_op3 : tregister);
begin
inherited create(op);
init(_size);
ops:=3;
loadconst(0,aword(_op1));
loadreg(1,_op2);
loadreg(2,_op3);
end;
constructor taicpu.op_ref_reg_reg(op : tasmop;_size : topsize;_op1 : treference; _op2,_op3 : tregister);
begin
inherited create(op);
init(_size);
ops:=3;
loadref(0,_op1);
loadreg(1,_op2);
loadreg(2,_op3);
end;
constructor taicpu.op_ref_regset(op: tasmop; _size : topsize; _op1: treference;const _op2data,_op2addr,_op2fpu: tcpuregisterset);
Begin
inherited create(op);
init(_size);
ops:=2;
loadref(0,_op1);
loadregset(1,_op2data,_op2addr,_op2fpu);
end;
constructor taicpu.op_regset_ref(op: tasmop; _size : topsize;const _op1data,_op1addr,_op1fpu: tcpuregisterset; _op2: treference);
Begin
inherited create(op);
init(_size);
ops:=2;
loadregset(0,_op1data,_op1addr,_op1fpu);
loadref(1,_op2);
End;
constructor taicpu.op_reg_regset(op: tasmop; _size : topsize; _op1: tregister;const _op2data,_op2addr,_op2fpu: tcpuregisterset);
Begin
inherited create(op);
init(_size);
ops:=2;
loadreg(0,_op1);
loadregset(1,_op2data,_op2addr,_op2fpu);
end;
constructor taicpu.op_regset_reg(op: tasmop; _size : topsize;const _op1data,_op1addr,_op1fpu: tcpuregisterset; _op2: tregister);
Begin
inherited create(op);
init(_size);
ops:=2;
loadregset(0,_op1data,_op1addr,_op1fpu);
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
(isregoverlap(oper[0]^.reg,oper[1]^.reg))
) or
(((opcode=A_MOVE) or (opcode=A_EXG) or (opcode=A_MOVEA)) and
(regtype = R_ADDRESSREGISTER) and
(ops=2) and
(oper[0]^.typ=top_reg) and
(oper[1]^.typ=top_reg) and
(isregoverlap(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 taicpu.spilling_get_operation_type(opnr: longint): topertype;
begin
result:=operand_read;
case opcode of
// CPU opcodes
A_MOVE, A_MOVEQ, A_MOVEA, A_MVZ, A_MVS, A_MOV3Q, A_LEA:
if opnr=1 then
result:=operand_write;
A_ADD, A_ADDQ, A_ADDX, A_SUB, A_SUBQ, A_SUBX,
A_AND, A_LSR, A_LSL, A_ASR, A_ASL, A_EOR, A_EORI, A_OR,
A_ROL, A_ROR, A_ROXL, A_ROXR,
A_BSET, A_BCLR:
if opnr=1 then
result:=operand_readwrite;
A_MULS, A_MULU, A_DIVS, A_DIVU, A_DIVSL, A_DIVUL, A_REMS, A_REMU:
{ FIXME: actually, one of the operand of the 3 op DIV/MUL is write only,
but we can't handle it easily... }
if opnr>0 then
result:=operand_readwrite;
A_DBRA:
if opnr=0 then
result:=operand_readwrite;
A_CLR, A_SXX, A_SEQ, A_SNE, A_SLT, A_SLE, A_SGT, A_SGE, A_SCS, A_SCC,
A_SMI, A_SPL, A_SF, A_ST, A_SVS, A_SVC, A_SHI, A_SLS:
result:=operand_write;
A_NEG, A_NEGX, A_EXT, A_EXTB, A_NOT, A_SWAP:
result:=operand_readwrite;
A_TST,A_CMP,A_CMPI,A_BTST:
begin end; { Do nothing, default operand_read is fine here. }
// FPU opcodes
A_FSXX, A_FSEQ, A_FSNE, A_FSLT, A_FSLE, A_FSGT, A_FSGE:
result:=operand_write;
A_FABS,A_FSQRT,A_FNEG,A_FSIN,A_FCOS:
if ops = 1 then
begin
if opnr = 0 then
result:=operand_readwrite;
end
else
if opnr = 1 then
result:=operand_write;
A_FMOVE:
if opnr=1 then
result:=operand_write;
A_FADD, A_FSUB, A_FMUL, A_FDIV:
if opnr=1 then
result:=operand_readwrite;
A_FCMP, A_FTST:
begin end; { operand_read }
else begin
internalerror(2004040903);
end;
end;
end;
function taicpu.spilling_get_operation_type_ref(opnr: longint; reg: tregister): topertype;
begin
result := operand_read;
if (oper[opnr]^.ref^.base = reg) and
(oper[opnr]^.ref^.direction <> dir_none) then
result := operand_readwrite;
end;
function spilling_create_load(const ref:treference;r:tregister):Taicpu;
begin
case getregtype(r) of
R_INTREGISTER :
result:=taicpu.op_ref_reg(A_MOVE,S_L,ref,r);
R_ADDRESSREGISTER :
result:=taicpu.op_ref_reg(A_MOVE,S_L,ref,r);
R_FPUREGISTER :
// no need to handle sizes here
result:=taicpu.op_ref_reg(A_FMOVE,S_FS,ref,r);
else
internalerror(200602011);
end;
end;
function spilling_create_store(r:tregister; const ref:treference):Taicpu;
begin
case getregtype(r) of
R_INTREGISTER :
result:=taicpu.op_reg_ref(A_MOVE,S_L,r,ref);
R_ADDRESSREGISTER :
result:=taicpu.op_reg_ref(A_MOVE,S_L,r,ref);
R_FPUREGISTER :
// no need to handle sizes here
result:=taicpu.op_reg_ref(A_FMOVE,S_FS,r,ref);
else
internalerror(200602012);
end;
end;
procedure InitAsm;
begin
end;
procedure DoneAsm;
begin
end;
begin
cai_align:=tai_align;
cai_cpu:=taicpu;
end.