{
    Copyright (c) 1998-2002 by Florian Klaempfl

    Generate i386 inline nodes

    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 nppcinl;

{$I fpcdefs.inc}

interface

uses
  node, ninl, ncginl;

type
  tppcinlinenode = class(tcginlinenode)
    { first pass override
      so that the code generator will actually generate
      these nodes.
    }
    function first_abs_real: tnode; override;
    function first_sqr_real: tnode; override;

    { trunc/round/frac?/int can't be inlined? }

    procedure second_abs_real; override;
    procedure second_sqr_real; override;
    procedure second_prefetch; override;
  private
    procedure load_fpu_location;
  end;

implementation

uses
  cutils, globals, verbose,
  aasmtai, aasmcpu,
  symconst, symdef,
  defutil,
  cgbase, pass_2,
  cpubase, ncgutil,
  cgutils, cgobj, rgobj;

{*****************************************************************************
                              TPPCINLINENODE
*****************************************************************************}

function tppcinlinenode.first_abs_real: tnode;
begin
  expectloc := LOC_FPUREGISTER;
  registersint := left.registersint;
  registersfpu := max(left.registersfpu, 1);
{$IFDEF SUPPORT_MMX}
  registersmmx := left.registersmmx;
{$ENDIF SUPPORT_MMX}
  first_abs_real := nil;
end;

function tppcinlinenode.first_sqr_real: tnode;
begin
  expectloc := LOC_FPUREGISTER;
  registersint := left.registersint;
  registersfpu := max(left.registersfpu, 1);
{$IFDEF SUPPORT_MMX}
  registersmmx := left.registersmmx;
{$ENDIF SUPPORT_MMX}
  first_sqr_real := nil;
end;

{ load the FPU into the an fpu register }

procedure tppcinlinenode.load_fpu_location;
begin
  location_reset(location, LOC_FPUREGISTER, def_cgsize(resulttype.def));
  secondpass(left);
  location_force_fpureg(exprasmlist, left.location, true);
  location_copy(location, left.location);
  if (location.loc = LOC_CFPUREGISTER) then
  begin
    location.loc := LOC_FPUREGISTER;
    location.register := cg.getfpuregister(exprasmlist, OS_F64);
  end;
end;

procedure tppcinlinenode.second_abs_real;
begin
  location.loc := LOC_FPUREGISTER;
  load_fpu_location;
  exprasmlist.concat(taicpu.op_reg_reg(A_FABS, location.register,
    left.location.register));
end;

procedure tppcinlinenode.second_sqr_real;
begin
  location.loc := LOC_FPUREGISTER;
  load_fpu_location;
  exprasmlist.concat(taicpu.op_reg_reg_reg(A_FMUL, location.register,
    left.location.register, left.location.register));
end;

procedure tppcinlinenode.second_prefetch;
var
  r: tregister;
begin
  secondpass(left);
  case left.location.loc of
    LOC_CREFERENCE,
      LOC_REFERENCE:
      begin
        r := cg.getintregister(exprasmlist, OS_ADDR);
        if (left.location.reference.offset = 0) and
          not assigned(left.location.reference.symbol) then
        begin
          if (left.location.reference.index = NR_NO) then
            exprasmlist.concat(taicpu.op_const_reg(A_DCBT, 0,
              left.location.reference.base))
          else
            exprasmlist.concat(taicpu.op_reg_reg(A_DCBT,
              left.location.reference.base, left.location.reference.index));
        end
        else
        begin
          cg.a_loadaddr_ref_reg(exprasmlist, left.location.reference, r);
          exprasmlist.concat(taicpu.op_const_reg(A_DCBT, 0, r));
        end;
      end;
  else
    internalerror(200402021);
  end;
end;

begin
  cinlinenode := tppcinlinenode;
end.