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{
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 n386inl;
{$i fpcdefs.inc}
interface
uses
node,nx86inl;
type
ti386inlinenode = class(tx86inlinenode)
public
function first_sar: tnode; override;
procedure second_rox_sar; override;
end;
implementation
uses
globtype,globals,
defutil,
aasmbase,aasmdata,
cgbase,pass_2,
cpuinfo,cpubase,
cga,cgutils,cgx86,cgobj,hlcgobj,
ninl,ncon,ncal;
function ti386inlinenode.first_sar: tnode;
begin
if is_64bitint(resultdef) and (
(inlinenumber=in_sar_x) or (
(inlinenumber=in_sar_x_y) and
(tcallparanode(left).left.nodetype=ordconstn)
)) then
begin
result:=nil;
expectloc:=LOC_REGISTER;
end
else
result:=inherited first_sar;
end;
procedure ti386inlinenode.second_rox_sar;
var
op1: tnode;
hreg64hi,hreg64lo: tregister;
v: aint;
begin
if is_64bitint(resultdef) and (
(inlinenumber=in_sar_x) or (
(inlinenumber=in_sar_x_y) and
(tcallparanode(left).left.nodetype=ordconstn)
)) then
begin
{ x sar constant }
if (left.nodetype=callparan) and
assigned(tcallparanode(left).right) then
begin
op1:=tcallparanode(tcallparanode(left).right).left;
secondpass(tcallparanode(left).left);
v:=Tordconstnode(tcallparanode(left).left).value.svalue and 63;
end
else
begin
op1:=left;
v:=1;
end;
secondpass(op1);
location_reset(location,LOC_REGISTER,def_cgsize(resultdef));
{ load left operator in a register }
hlcg.location_force_reg(current_asmdata.CurrAsmList,op1.location,op1.resultdef,resultdef,false);
hreg64hi:=op1.location.register64.reghi;
hreg64lo:=op1.location.register64.reglo;
if (v=63) then
begin
emit_const_reg(A_SAR,S_L,31,hreg64hi);
cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_32,OS_32,hreg64hi,hreg64lo);
end
else if (v>31) then
begin
cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_32,OS_32,hreg64hi,hreg64lo);
emit_const_reg(A_SAR,S_L,31,hreg64hi);
emit_const_reg(A_SAR,S_L,v and 31,hreg64lo);
end
else
begin
emit_const_reg_reg(A_SHRD,S_L,v and 31,hreg64hi,hreg64lo);
emit_const_reg(A_SAR,S_L,v and 31,hreg64hi);
end;
location.register64.reghi:=hreg64hi;
location.register64.reglo:=hreg64lo;
end
else
inherited second_rox_sar;
end;
begin
cinlinenode:=ti386inlinenode;
end.
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