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126 lines
3.6 KiB
ObjectPascal
126 lines
3.6 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Florian Klaempfl
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Generate i386 inline nodes
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit n386inl;
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{$i fpcdefs.inc}
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interface
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uses
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node,nx86inl;
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type
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ti386inlinenode = class(tx86inlinenode)
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public
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function first_sar: tnode; override;
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procedure second_rox_sar; override;
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end;
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implementation
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uses
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globtype,globals,compinnr,
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defutil,
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aasmbase,aasmdata,
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cgbase,pass_2,
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cpuinfo,cpubase,
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cga,cgutils,cgx86,cgobj,hlcgobj,
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ninl,ncon,ncal;
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function ti386inlinenode.first_sar: tnode;
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begin
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if is_64bitint(resultdef) and (
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(inlinenumber=in_sar_x) or (
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(inlinenumber=in_sar_x_y) and
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(tcallparanode(left).left.nodetype=ordconstn)
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)) then
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begin
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result:=nil;
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expectloc:=LOC_REGISTER;
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end
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else
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result:=inherited first_sar;
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end;
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procedure ti386inlinenode.second_rox_sar;
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var
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op1: tnode;
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hreg64hi,hreg64lo: tregister;
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v: aint;
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begin
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if is_64bitint(resultdef) and (
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(inlinenumber=in_sar_x) or (
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(inlinenumber=in_sar_x_y) and
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(tcallparanode(left).left.nodetype=ordconstn)
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)) then
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begin
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{ x sar constant }
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if (left.nodetype=callparan) and
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assigned(tcallparanode(left).right) then
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begin
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op1:=tcallparanode(tcallparanode(left).right).left;
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secondpass(tcallparanode(left).left);
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v:=Tordconstnode(tcallparanode(left).left).value.svalue and 63;
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end
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else
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begin
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op1:=left;
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v:=1;
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end;
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secondpass(op1);
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location_reset(location,LOC_REGISTER,def_cgsize(resultdef));
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{ load left operator in a register }
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hlcg.location_force_reg(current_asmdata.CurrAsmList,op1.location,op1.resultdef,resultdef,false);
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hreg64hi:=op1.location.register64.reghi;
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hreg64lo:=op1.location.register64.reglo;
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if (v=63) then
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begin
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emit_const_reg(A_SAR,S_L,31,hreg64hi);
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cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_32,OS_32,hreg64hi,hreg64lo);
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end
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else if (v>31) then
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begin
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cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_32,OS_32,hreg64hi,hreg64lo);
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emit_const_reg(A_SAR,S_L,31,hreg64hi);
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emit_const_reg(A_SAR,S_L,v and 31,hreg64lo);
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end
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else
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begin
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emit_const_reg_reg(A_SHRD,S_L,v and 31,hreg64hi,hreg64lo);
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emit_const_reg(A_SAR,S_L,v and 31,hreg64hi);
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end;
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location.register64.reghi:=hreg64hi;
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location.register64.reglo:=hreg64lo;
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end
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else
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inherited second_rox_sar;
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end;
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begin
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cinlinenode:=ti386inlinenode;
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end.
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