{
$Id: nx86cnv.pas,v 1.8 2003/12/26 00:32:22 florian Exp $
Copyright (c) 1998-2002 by Florian Klaempfl
Generate for x86-64 and i386 assembler for type converting 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 nx86cnv;
{$i fpcdefs.inc}
interface
uses
node,ncgcnv,defutil,defcmp;
type
tx86typeconvnode = class(tcgtypeconvnode)
protected
function first_real_to_real : tnode;override;
{ procedure second_int_to_int;override; }
{ procedure second_string_to_string;override; }
{ procedure second_cstring_to_pchar;override; }
{ procedure second_string_to_chararray;override; }
{ procedure second_array_to_pointer;override; }
{ procedure second_pointer_to_array;override; }
{ procedure second_chararray_to_string;override; }
{ procedure second_char_to_string;override; }
{ function first_int_to_real: tnode; override; }
{ procedure second_int_to_real;override; }
{ procedure second_real_to_real;override; }
{ procedure second_cord_to_pointer;override; }
{ procedure second_proc_to_procvar;override; }
{ procedure second_bool_to_int;override; }
procedure second_int_to_bool;override;
{ procedure second_load_smallset;override; }
{ procedure second_ansistring_to_pchar;override; }
{ procedure second_pchar_to_string;override; }
{ procedure second_class_to_intf;override; }
{ procedure second_char_to_char;override; }
end;
implementation
uses
verbose,systems,globals,
aasmbase,aasmtai,
symconst,symdef,
cgbase,pass_2,
ncon,ncal,ncnv,
cpubase,
cgobj,cgx86,ncgutil;
function tx86typeconvnode.first_real_to_real : tnode;
begin
first_real_to_real:=nil;
{ comp isn't a floating type }
if (tfloatdef(resulttype.def).typ=s64comp) and
(tfloatdef(left.resulttype.def).typ<>s64comp) and
not (nf_explicit in flags) then
CGMessage(type_w_convert_real_2_comp);
if use_sse(resulttype.def) then
begin
if registersmm<1 then
registersmm:=1;
expectloc:=LOC_MMREGISTER;
end
else
begin
if registersfpu<1 then
registersfpu:=1;
expectloc:=LOC_FPUREGISTER;
end;
end;
procedure tx86typeconvnode.second_int_to_bool;
var
hregister : tregister;
href : treference;
resflags : tresflags;
hlabel,oldtruelabel,oldfalselabel : tasmlabel;
begin
oldtruelabel:=truelabel;
oldfalselabel:=falselabel;
objectlibrary.getlabel(truelabel);
objectlibrary.getlabel(falselabel);
secondpass(left);
if codegenerror then
exit;
{ byte(boolean) or word(wordbool) or longint(longbool) must }
{ be accepted for var parameters }
if (nf_explicit in flags) and
(left.resulttype.def.size=resulttype.def.size) and
(left.location.loc in [LOC_REFERENCE,LOC_CREFERENCE,LOC_CREGISTER]) then
begin
location_copy(location,left.location);
truelabel:=oldtruelabel;
falselabel:=oldfalselabel;
exit;
end;
{ Load left node into flag F_NE/F_E }
resflags:=F_NE;
case left.location.loc of
LOC_CREFERENCE,
LOC_REFERENCE :
begin
{$ifndef cpu64bit}
if left.location.size in [OS_64,OS_S64] then
begin
location_release(exprasmlist,left.location);
hregister:=cg.getintregister(exprasmlist,OS_INT);
cg.a_load_ref_reg(exprasmlist,OS_32,OS_32,left.location.reference,hregister);
href:=left.location.reference;
inc(href.offset,4);
cg.ungetregister(exprasmlist,hregister);
cg.a_op_ref_reg(exprasmlist,OP_OR,OS_32,href,hregister);
end
else
{$endif cpu64bit}
begin
location_force_reg(exprasmlist,left.location,left.location.size,true);
location_release(exprasmlist,left.location);
cg.a_op_reg_reg(exprasmlist,OP_OR,left.location.size,left.location.register,left.location.register);
end;
end;
LOC_FLAGS :
begin
resflags:=left.location.resflags;
end;
LOC_REGISTER,LOC_CREGISTER :
begin
{$ifndef cpu64bit}
if left.location.size in [OS_64,OS_S64] then
begin
hregister:=cg.getintregister(exprasmlist,OS_32);
cg.a_load_reg_reg(exprasmlist,OS_32,OS_32,left.location.registerlow,hregister);
cg.ungetregister(exprasmlist,hregister);
location_release(exprasmlist,left.location);
cg.a_op_reg_reg(exprasmlist,OP_OR,OS_32,left.location.registerhigh,hregister);
end
else
{$endif cpu64bit}
begin
location_release(exprasmlist,left.location);
cg.a_op_reg_reg(exprasmlist,OP_OR,left.location.size,left.location.register,left.location.register);
end;
end;
LOC_JUMP :
begin
hregister:=cg.getintregister(exprasmlist,OS_INT);
objectlibrary.getlabel(hlabel);
cg.a_label(exprasmlist,truelabel);
cg.a_load_const_reg(exprasmlist,OS_INT,1,hregister);
cg.a_jmp_always(exprasmlist,hlabel);
cg.a_label(exprasmlist,falselabel);
cg.a_load_const_reg(exprasmlist,OS_INT,0,hregister);
cg.a_label(exprasmlist,hlabel);
cg.ungetregister(exprasmlist,hregister);
cg.a_op_reg_reg(exprasmlist,OP_OR,OS_INT,hregister,hregister);
end;
else
internalerror(10062);
end;
{ load flags to register }
location_reset(location,LOC_REGISTER,def_cgsize(resulttype.def));
location.register:=cg.getintregister(exprasmlist,location.size);
cg.g_flags2reg(exprasmlist,location.size,resflags,location.register);
truelabel:=oldtruelabel;
falselabel:=oldfalselabel;
end;
end.
{
$Log: nx86cnv.pas,v $
Revision 1.8 2003/12/26 00:32:22 florian
+ fpu<->mm register conversion
Revision 1.7 2003/10/10 17:48:14 peter
* old trgobj moved to x86/rgcpu and renamed to trgx86fpu
* tregisteralloctor renamed to trgobj
* removed rgobj from a lot of units
* moved location_* and reference_* to cgobj
* first things for mmx register allocation
Revision 1.6 2003/10/09 21:31:38 daniel
* Register allocator splitted, ans abstract now
Revision 1.5 2003/10/01 20:34:51 peter
* procinfo unit contains tprocinfo
* cginfo renamed to cgbase
* moved cgmessage to verbose
* fixed ppc and sparc compiles
Revision 1.4 2003/09/28 21:48:57 peter
* fix register leak
Revision 1.3 2003/09/03 15:55:02 peter
* NEWRA branch merged
Revision 1.2.2.1 2003/08/31 15:46:26 peter
* more updates for tregister
Revision 1.2 2003/05/22 21:33:31 peter
* removed some unit dependencies
Revision 1.1 2003/05/01 08:02:42 florian
* i386 and x86-64 share second_int_to_bool, moved to nx86cnv.pas
}
syntax highlighted by Code2HTML, v. 0.9.1