mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-07-25 01:06:28 +02:00

a) cpu64bitaddr, which means that we are generating a compiler which will generate code for targets with a 64 bit address space/abi b) cpu64bitalu, which means that we are generating a compiler which will generate code for a cpu with support for 64 bit integer operations (possibly running in a 32 bit address space, depending on the cpu64bitaddr define) All cpus which had cpu64bit set now have both the above defines set, and none of the 32 bit cpus have cpu64bitalu set (and none will compile with it currently) + pint and puint types, similar to aint/aword (not pword because that that conflicts with pword=^word) * several changes from aint/aword to pint/pword * some changes of tcgsize2size[OS_INT] to sizeof(pint) git-svn-id: trunk@10320 -
701 lines
33 KiB
ObjectPascal
701 lines
33 KiB
ObjectPascal
{
|
|
Copyright (c) 1998-2002 by Florian Klaempfl
|
|
|
|
Generate assembler for constant nodes which are the same for
|
|
all (most) processors
|
|
|
|
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 ncgcon;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
node,ncon;
|
|
|
|
type
|
|
tcgdataconstnode = class(tdataconstnode)
|
|
procedure pass_generate_code;override;
|
|
end;
|
|
|
|
tcgrealconstnode = class(trealconstnode)
|
|
procedure pass_generate_code;override;
|
|
end;
|
|
|
|
tcgordconstnode = class(tordconstnode)
|
|
procedure pass_generate_code;override;
|
|
end;
|
|
|
|
tcgpointerconstnode = class(tpointerconstnode)
|
|
procedure pass_generate_code;override;
|
|
end;
|
|
|
|
tcgstringconstnode = class(tstringconstnode)
|
|
procedure pass_generate_code;override;
|
|
end;
|
|
|
|
tcgsetconstnode = class(tsetconstnode)
|
|
procedure pass_generate_code;override;
|
|
end;
|
|
|
|
tcgnilnode = class(tnilnode)
|
|
procedure pass_generate_code;override;
|
|
end;
|
|
|
|
tcgguidconstnode = class(tguidconstnode)
|
|
procedure pass_generate_code;override;
|
|
end;
|
|
|
|
|
|
implementation
|
|
|
|
uses
|
|
globtype,widestr,systems,
|
|
verbose,globals,cutils,
|
|
symconst,symdef,aasmbase,aasmtai,aasmdata,aasmcpu,defutil,
|
|
cpuinfo,cpubase,
|
|
cgbase,cgobj,cgutils,
|
|
ncgutil
|
|
;
|
|
|
|
|
|
{*****************************************************************************
|
|
TCGREALCONSTNODE
|
|
*****************************************************************************}
|
|
|
|
procedure tcgdataconstnode.pass_generate_code;
|
|
var
|
|
l : tasmlabel;
|
|
i : longint;
|
|
b : byte;
|
|
begin
|
|
location_reset(location,LOC_CREFERENCE,OS_NO);
|
|
current_asmdata.getdatalabel(l);
|
|
maybe_new_object_file(current_asmdata.asmlists[al_typedconsts]);
|
|
new_section(current_asmdata.asmlists[al_typedconsts],sec_rodata,l.name,const_align(maxalign));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(l));
|
|
data.seek(0);
|
|
for i:=0 to data.size-1 do
|
|
begin
|
|
data.read(b,1);
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_8bit(b));
|
|
end;
|
|
location.reference.symbol:=l;
|
|
end;
|
|
|
|
{*****************************************************************************
|
|
TCGREALCONSTNODE
|
|
*****************************************************************************}
|
|
|
|
procedure tcgrealconstnode.pass_generate_code;
|
|
{ I suppose the parser/pass_1 must make sure the generated real }
|
|
{ constants are actually supported by the target processor? (JM) }
|
|
const
|
|
floattype2ait:array[tfloattype] of taitype=
|
|
(ait_real_32bit,ait_real_64bit,ait_real_80bit,ait_comp_64bit,ait_comp_64bit,ait_real_128bit);
|
|
var
|
|
hp1 : tai;
|
|
lastlabel : tasmlabel;
|
|
realait : taitype;
|
|
{$ifdef ARM}
|
|
hiloswapped : boolean;
|
|
{$endif ARM}
|
|
|
|
begin
|
|
location_reset(location,LOC_CREFERENCE,def_cgsize(resultdef));
|
|
lastlabel:=nil;
|
|
realait:=floattype2ait[tfloatdef(resultdef).floattype];
|
|
{$ifdef ARM}
|
|
hiloswapped:=is_double_hilo_swapped;
|
|
{$endif ARM}
|
|
{ const already used ? }
|
|
if not assigned(lab_real) then
|
|
begin
|
|
{ tries to find an old entry }
|
|
hp1:=tai(current_asmdata.asmlists[al_typedconsts].first);
|
|
while assigned(hp1) do
|
|
begin
|
|
if hp1.typ=ait_label then
|
|
lastlabel:=tai_label(hp1).labsym
|
|
else
|
|
begin
|
|
if (hp1.typ=realait) and (lastlabel<>nil) then
|
|
begin
|
|
if is_number_float(value_real) and
|
|
(
|
|
((realait=ait_real_32bit) and (tai_real_32bit(hp1).value=value_real) and is_number_float(tai_real_32bit(hp1).value) and (get_real_sign(value_real) = get_real_sign(tai_real_32bit(hp1).value))) or
|
|
((realait=ait_real_64bit) and
|
|
{$ifdef ARM}
|
|
((tai_real_64bit(hp1).formatoptions=fo_hiloswapped)=hiloswapped) and
|
|
{$endif ARM}
|
|
(tai_real_64bit(hp1).value=value_real) and is_number_float(tai_real_64bit(hp1).value) and (get_real_sign(value_real) = get_real_sign(tai_real_64bit(hp1).value))) or
|
|
((realait=ait_real_80bit) and (tai_real_80bit(hp1).value=value_real) and is_number_float(tai_real_80bit(hp1).value) and (get_real_sign(value_real) = get_real_sign(tai_real_80bit(hp1).value))) or
|
|
{$ifdef cpufloat128}
|
|
((realait=ait_real_128bit) and (tai_real_128bit(hp1).value=value_real) and is_number_float(tai_real_128bit(hp1).value) and (get_real_sign(value_real) = get_real_sign(tai_real_128bit(hp1).value))) or
|
|
{$endif cpufloat128}
|
|
((realait=ait_comp_64bit) and (tai_comp_64bit(hp1).value=value_real) and is_number_float(tai_comp_64bit(hp1).value) and (get_real_sign(value_real) = get_real_sign(tai_comp_64bit(hp1).value)))
|
|
) then
|
|
begin
|
|
{ found! }
|
|
lab_real:=lastlabel;
|
|
break;
|
|
end;
|
|
end;
|
|
lastlabel:=nil;
|
|
end;
|
|
hp1:=tai(hp1.next);
|
|
end;
|
|
{ :-(, we must generate a new entry }
|
|
if not assigned(lab_real) then
|
|
begin
|
|
current_asmdata.getdatalabel(lastlabel);
|
|
lab_real:=lastlabel;
|
|
maybe_new_object_file(current_asmdata.asmlists[al_typedconsts]);
|
|
new_section(current_asmdata.asmlists[al_typedconsts],sec_rodata_norel,lastlabel.name,const_align(resultdef.size));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(lastlabel));
|
|
case realait of
|
|
ait_real_32bit :
|
|
begin
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_real_32bit.Create(ts32real(value_real)));
|
|
{ range checking? }
|
|
if ((cs_check_range in current_settings.localswitches) or
|
|
(cs_check_overflow in current_settings.localswitches)) and
|
|
(tai_real_32bit(current_asmdata.asmlists[al_typedconsts].last).value=MathInf.Value) then
|
|
Message(parser_e_range_check_error);
|
|
end;
|
|
|
|
ait_real_64bit :
|
|
begin
|
|
{$ifdef ARM}
|
|
if hiloswapped then
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_real_64bit.Create_hiloswapped(ts64real(value_real)))
|
|
else
|
|
{$endif ARM}
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_real_64bit.Create(ts64real(value_real)));
|
|
|
|
{ range checking? }
|
|
if ((cs_check_range in current_settings.localswitches) or
|
|
(cs_check_overflow in current_settings.localswitches)) and
|
|
(tai_real_64bit(current_asmdata.asmlists[al_typedconsts].last).value=MathInf.Value) then
|
|
Message(parser_e_range_check_error);
|
|
end;
|
|
|
|
ait_real_80bit :
|
|
begin
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_real_80bit.Create(value_real));
|
|
|
|
{ range checking? }
|
|
if ((cs_check_range in current_settings.localswitches) or
|
|
(cs_check_overflow in current_settings.localswitches)) and
|
|
(tai_real_80bit(current_asmdata.asmlists[al_typedconsts].last).value=MathInf.Value) then
|
|
Message(parser_e_range_check_error);
|
|
end;
|
|
{$ifdef cpufloat128}
|
|
ait_real_128bit :
|
|
begin
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_real_128bit.Create(value_real));
|
|
|
|
{ range checking? }
|
|
if ((cs_check_range in current_settings.localswitches) or
|
|
(cs_check_overflow in current_settings.localswitches)) and
|
|
(tai_real_128bit(current_asmdata.asmlists[al_typedconsts].last).value=MathInf.Value) then
|
|
Message(parser_e_range_check_error);
|
|
end;
|
|
{$endif cpufloat128}
|
|
|
|
{ the round is necessary for native compilers where comp isn't a float }
|
|
ait_comp_64bit :
|
|
if (value_real>9223372036854775807.0) or (value_real<-9223372036854775808.0) then
|
|
message(parser_e_range_check_error)
|
|
else
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_comp_64bit.Create(round(value_real)));
|
|
else
|
|
internalerror(10120);
|
|
end;
|
|
end;
|
|
end;
|
|
location.reference.symbol:=lab_real;
|
|
end;
|
|
|
|
{*****************************************************************************
|
|
TCGORDCONSTNODE
|
|
*****************************************************************************}
|
|
|
|
procedure tcgordconstnode.pass_generate_code;
|
|
begin
|
|
location_reset(location,LOC_CONSTANT,def_cgsize(resultdef));
|
|
{$ifdef cpu64bitalu}
|
|
location.value:=value.svalue;
|
|
{$else cpu64bitalu}
|
|
location.value64:=value.svalue;
|
|
{$endif cpu64bitalu}
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TCGPOINTERCONSTNODE
|
|
*****************************************************************************}
|
|
|
|
procedure tcgpointerconstnode.pass_generate_code;
|
|
begin
|
|
{ an integer const. behaves as a memory reference }
|
|
location_reset(location,LOC_CONSTANT,OS_ADDR);
|
|
location.value:=aint(value);
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TCGSTRINGCONSTNODE
|
|
*****************************************************************************}
|
|
|
|
procedure tcgstringconstnode.pass_generate_code;
|
|
var
|
|
hp1,hp2 : tai;
|
|
l1,
|
|
lastlabel : tasmlabel;
|
|
lastlabelhp : tai;
|
|
pc : pchar;
|
|
same_string : boolean;
|
|
l,j,
|
|
i,mylength : longint;
|
|
begin
|
|
{ for empty ansistrings we could return a constant 0 }
|
|
if (cst_type in [cst_ansistring,cst_widestring]) and (len=0) then
|
|
begin
|
|
location_reset(location,LOC_CONSTANT,OS_ADDR);
|
|
location.value:=0;
|
|
exit;
|
|
end;
|
|
{ return a constant reference in memory }
|
|
location_reset(location,LOC_CREFERENCE,def_cgsize(resultdef));
|
|
{ const already used ? }
|
|
lastlabel:=nil;
|
|
lastlabelhp:=nil;
|
|
if not assigned(lab_str) then
|
|
begin
|
|
if is_shortstring(resultdef) then
|
|
mylength:=len+2
|
|
else
|
|
mylength:=len+1;
|
|
{ widestrings can't be reused yet }
|
|
if not(is_widestring(resultdef)) then
|
|
begin
|
|
{ tries to find an old entry }
|
|
hp1:=tai(current_asmdata.asmlists[al_typedconsts].first);
|
|
while assigned(hp1) do
|
|
begin
|
|
if hp1.typ=ait_label then
|
|
begin
|
|
lastlabel:=tai_label(hp1).labsym;
|
|
lastlabelhp:=hp1;
|
|
end
|
|
else
|
|
begin
|
|
same_string:=false;
|
|
if (hp1.typ=ait_string) and
|
|
(lastlabel<>nil) and
|
|
(tai_string(hp1).len=mylength) then
|
|
begin
|
|
case cst_type of
|
|
cst_conststring:
|
|
begin
|
|
j:=0;
|
|
same_string:=true;
|
|
if len>0 then
|
|
begin
|
|
for i:=0 to len-1 do
|
|
begin
|
|
if tai_string(hp1).str[j]<>value_str[i] then
|
|
begin
|
|
same_string:=false;
|
|
break;
|
|
end;
|
|
inc(j);
|
|
end;
|
|
end;
|
|
end;
|
|
cst_shortstring:
|
|
begin
|
|
{ if shortstring then check the length byte first and
|
|
set the start index to 1 }
|
|
if len=ord(tai_string(hp1).str[0]) then
|
|
begin
|
|
j:=1;
|
|
same_string:=true;
|
|
if len>0 then
|
|
begin
|
|
for i:=0 to len-1 do
|
|
begin
|
|
if tai_string(hp1).str[j]<>value_str[i] then
|
|
begin
|
|
same_string:=false;
|
|
break;
|
|
end;
|
|
inc(j);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
cst_ansistring,
|
|
cst_widestring :
|
|
begin
|
|
{ before the string the following sequence must be found:
|
|
<label>
|
|
constsymbol <datalabel>
|
|
constint -1
|
|
constint <len>
|
|
we must then return <label> to reuse
|
|
}
|
|
hp2:=tai(lastlabelhp.previous);
|
|
if assigned(hp2) and
|
|
(hp2.typ=ait_const) and
|
|
(tai_const(hp2).consttype=aitconst_aint) and
|
|
(tai_const(hp2).value=len) and
|
|
assigned(hp2.previous) and
|
|
(tai(hp2.previous).typ=ait_const) and
|
|
(tai_const(hp2.previous).consttype=aitconst_aint) and
|
|
(tai_const(hp2.previous).value=-1) and
|
|
assigned(hp2.previous.previous) and
|
|
(tai(hp2.previous.previous).typ=ait_const) and
|
|
(tai_const(hp2.previous.previous).consttype=aitconst_ptr) and
|
|
assigned(hp2.previous.previous.previous) and
|
|
(tai(hp2.previous.previous.previous).typ=ait_label) then
|
|
begin
|
|
lastlabel:=tai_label(hp2.previous.previous.previous).labsym;
|
|
same_string:=true;
|
|
j:=0;
|
|
if len>0 then
|
|
begin
|
|
for i:=0 to len-1 do
|
|
begin
|
|
if tai_string(hp1).str[j]<>value_str[i] then
|
|
begin
|
|
same_string:=false;
|
|
break;
|
|
end;
|
|
inc(j);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
{ found ? }
|
|
if same_string then
|
|
begin
|
|
lab_str:=lastlabel;
|
|
break;
|
|
end;
|
|
end;
|
|
lastlabel:=nil;
|
|
end;
|
|
hp1:=tai(hp1.next);
|
|
end;
|
|
end;
|
|
{ :-(, we must generate a new entry }
|
|
if not assigned(lab_str) then
|
|
begin
|
|
current_asmdata.getdatalabel(lastlabel);
|
|
lab_str:=lastlabel;
|
|
maybe_new_object_file(current_asmdata.asmlists[al_typedconsts]);
|
|
if (len=0) or
|
|
not(cst_type in [cst_ansistring,cst_widestring]) then
|
|
new_section(current_asmdata.asmlists[al_typedconsts],sec_rodata_norel,lastlabel.name,const_align(sizeof(pint)))
|
|
else
|
|
new_section(current_asmdata.asmlists[al_typedconsts],sec_rodata,lastlabel.name,const_align(sizeof(pint)));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(lastlabel));
|
|
{ generate an ansi string ? }
|
|
case cst_type of
|
|
cst_ansistring:
|
|
begin
|
|
{ an empty ansi string is nil! }
|
|
if len=0 then
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_sym(nil))
|
|
else
|
|
begin
|
|
current_asmdata.getdatalabel(l1);
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_sym(l1));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_pint(-1));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_pint(len));
|
|
{ make sure the string doesn't get dead stripped if the header is referenced }
|
|
if (target_info.system in systems_darwin) then
|
|
current_asmdata.asmlists[al_typedconsts].concat(tai_directive.create(asd_reference,l1.name));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(l1));
|
|
{ ... and vice versa }
|
|
if (target_info.system in systems_darwin) then
|
|
current_asmdata.asmlists[al_typedconsts].concat(tai_directive.create(asd_reference,lab_str.name));
|
|
{ include also terminating zero }
|
|
getmem(pc,len+1);
|
|
move(value_str^,pc^,len);
|
|
pc[len]:=#0;
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_string.Create_pchar(pc,len+1));
|
|
end;
|
|
end;
|
|
cst_widestring:
|
|
begin
|
|
{ an empty wide string is nil! }
|
|
if len=0 then
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_sym(nil))
|
|
else
|
|
begin
|
|
current_asmdata.getdatalabel(l1);
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_sym(l1));
|
|
|
|
{ we use always UTF-16 coding for constants }
|
|
{ at least for now }
|
|
{ Consts.concat(Tai_const.Create_8bit(2)); }
|
|
if tf_winlikewidestring in target_info.flags then
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_32bit(len*cwidechartype.size))
|
|
else
|
|
begin
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_pint(-1));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_pint(len*cwidechartype.size));
|
|
end;
|
|
{ make sure the string doesn't get dead stripped if the header is referenced }
|
|
if (target_info.system in systems_darwin) then
|
|
current_asmdata.asmlists[al_typedconsts].concat(tai_directive.create(asd_reference,l1.name));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(l1));
|
|
{ ... and vice versa }
|
|
if (target_info.system in systems_darwin) then
|
|
current_asmdata.asmlists[al_typedconsts].concat(tai_directive.create(asd_reference,lab_str.name));
|
|
for i:=0 to len-1 do
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_16bit(pcompilerwidestring(value_str)^.data[i]));
|
|
{ terminating zero }
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_16bit(0));
|
|
end;
|
|
end;
|
|
cst_shortstring:
|
|
begin
|
|
{ truncate strings larger than 255 chars }
|
|
if len>255 then
|
|
l:=255
|
|
else
|
|
l:=len;
|
|
{ include length and terminating zero for quick conversion to pchar }
|
|
getmem(pc,l+2);
|
|
move(value_str^,pc[1],l);
|
|
pc[0]:=chr(l);
|
|
pc[l+1]:=#0;
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_string.Create_pchar(pc,l+2));
|
|
end;
|
|
cst_conststring:
|
|
begin
|
|
{ include terminating zero }
|
|
getmem(pc,len+1);
|
|
move(value_str^,pc[0],len);
|
|
pc[len]:=#0;
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_string.Create_pchar(pc,len+1));
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
location.reference.symbol:=lab_str;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TCGSETCONSTNODE
|
|
*****************************************************************************}
|
|
|
|
procedure tcgsetconstnode.pass_generate_code;
|
|
var
|
|
hp1 : tai;
|
|
lastlabel : tasmlabel;
|
|
i, diff : longint;
|
|
neededtyp : taiconst_type;
|
|
type
|
|
setbytes=array[0..31] of byte;
|
|
Psetbytes=^setbytes;
|
|
begin
|
|
adjustforsetbase;
|
|
|
|
{ small sets are loaded as constants }
|
|
if not(is_varset(resultdef)) then
|
|
begin
|
|
location_reset(location,LOC_CONSTANT,int_cgsize(resultdef.size));
|
|
if (source_info.endian=target_info.endian) then
|
|
begin
|
|
{$if defined(FPC_NEW_BIGENDIAN_SETS) or defined(FPC_LITTLE_ENDIAN)}
|
|
{ not plongint, because that will "sign extend" the set on 64 bit platforms }
|
|
{ if changed to "paword", please also modify "32-resultdef.size*8" and }
|
|
{ cross-endian code below }
|
|
{ Extra aint type cast to avoid range errors }
|
|
location.value:=aint(pCardinal(value_set)^)
|
|
{$else}
|
|
location.value:=reverse_byte(Psetbytes(value_set)^[0]);
|
|
location.value:=location.value or (reverse_byte(Psetbytes(value_set)^[1]) shl 8);
|
|
location.value:=location.value or (reverse_byte(Psetbytes(value_set)^[2]) shl 16);
|
|
location.value:=location.value or (reverse_byte(Psetbytes(value_set)^[3]) shl 24);
|
|
{$endif}
|
|
end
|
|
else
|
|
begin
|
|
location.value:=swapendian(Pcardinal(value_set)^);
|
|
location.value:= reverse_byte (location.value and $ff) or
|
|
(reverse_byte((location.value shr 8) and $ff) shl 8) or
|
|
(reverse_byte((location.value shr 16) and $ff) shl 16) or
|
|
(reverse_byte((location.value shr 24) and $ff) shl 24);
|
|
end;
|
|
if (target_info.endian=endian_big) then
|
|
location.value:=location.value shr (32-resultdef.size*8);
|
|
exit;
|
|
end;
|
|
location_reset(location,LOC_CREFERENCE,OS_NO);
|
|
neededtyp:=aitconst_8bit;
|
|
lastlabel:=nil;
|
|
{ const already used ? }
|
|
if not assigned(lab_set) then
|
|
begin
|
|
{ tries to found an old entry }
|
|
hp1:=tai(current_asmdata.asmlists[al_typedconsts].first);
|
|
while assigned(hp1) do
|
|
begin
|
|
if hp1.typ=ait_label then
|
|
lastlabel:=tai_label(hp1).labsym
|
|
else
|
|
begin
|
|
if (lastlabel<>nil) and
|
|
(hp1.typ=ait_const) and
|
|
(tai_const(hp1).consttype=neededtyp) then
|
|
begin
|
|
if (tai_const(hp1).consttype=aitconst_8bit) then
|
|
begin
|
|
{ compare normal set }
|
|
i:=0;
|
|
while assigned(hp1) and (i<32) do
|
|
begin
|
|
if (source_info.endian=target_info.endian) then
|
|
begin
|
|
{$if defined(FPC_NEW_BIGENDIAN_SETS) or defined(FPC_LITTLE_ENDIAN)}
|
|
if tai_const(hp1).value<>Psetbytes(value_set)^[i ] then
|
|
{$else}
|
|
if tai_const(hp1).value<>reverse_byte(Psetbytes(value_set)^[i xor 3]) then
|
|
{$endif}
|
|
break
|
|
end
|
|
else if tai_const(hp1).value<>reverse_byte(Psetbytes(value_set)^[i]) then
|
|
break;
|
|
inc(i);
|
|
hp1:=tai(hp1.next);
|
|
end;
|
|
if i=32 then
|
|
begin
|
|
{ found! }
|
|
lab_set:=lastlabel;
|
|
break;
|
|
end;
|
|
{ leave when the end of consts is reached, so no
|
|
hp1.next is done }
|
|
if not assigned(hp1) then
|
|
break;
|
|
end
|
|
else
|
|
begin
|
|
{ compare small set }
|
|
if paint(value_set)^=tai_const(hp1).value then
|
|
begin
|
|
{ found! }
|
|
lab_set:=lastlabel;
|
|
break;
|
|
end;
|
|
end;
|
|
end;
|
|
lastlabel:=nil;
|
|
end;
|
|
hp1:=tai(hp1.next);
|
|
end;
|
|
{ :-(, we must generate a new entry }
|
|
if not assigned(lab_set) then
|
|
begin
|
|
current_asmdata.getdatalabel(lastlabel);
|
|
lab_set:=lastlabel;
|
|
maybe_new_object_file(current_asmdata.asmlists[al_typedconsts]);
|
|
new_section(current_asmdata.asmlists[al_typedconsts],sec_rodata_norel,lastlabel.name,const_align(sizeof(pint)));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(lastlabel));
|
|
{ already handled at the start of this method?? (JM)
|
|
if tsetdef(resultdef).settype=smallset then
|
|
begin
|
|
move(value_set^,i,sizeof(longint));
|
|
Consts.concat(Tai_const.Create_32bit(i));
|
|
end
|
|
else
|
|
}
|
|
begin
|
|
if (source_info.endian=target_info.endian) then
|
|
{$if defined(FPC_NEW_BIGENDIAN_SETS) or defined(FPC_LITTLE_ENDIAN)}
|
|
for i:=0 to 31 do
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_8bit(Psetbytes(value_set)^[i]))
|
|
{$else}
|
|
for i:=0 to 31 do
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_8bit(reverse_byte(Psetbytes(value_set)^[i xor 3])))
|
|
{$endif}
|
|
else
|
|
for i:=0 to 31 do
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_8bit(reverse_byte(Psetbytes(value_set)^[i])));
|
|
end;
|
|
end;
|
|
end;
|
|
location.reference.symbol:=lab_set;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TCGNILNODE
|
|
*****************************************************************************}
|
|
|
|
procedure tcgnilnode.pass_generate_code;
|
|
begin
|
|
location_reset(location,LOC_CONSTANT,OS_ADDR);
|
|
location.value:=0;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TCGPOINTERCONSTNODE
|
|
*****************************************************************************}
|
|
|
|
procedure tcgguidconstnode.pass_generate_code;
|
|
var
|
|
tmplabel : TAsmLabel;
|
|
i : integer;
|
|
begin
|
|
location_reset(location,LOC_CREFERENCE,OS_NO);
|
|
{ label for GUID }
|
|
current_asmdata.getdatalabel(tmplabel);
|
|
current_asmdata.asmlists[al_typedconsts].concat(tai_align.create(const_align(16)));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(tmplabel));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_32bit(longint(value.D1)));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_16bit(value.D2));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_16bit(value.D3));
|
|
for i:=low(value.D4) to high(value.D4) do
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_8bit(value.D4[i]));
|
|
location.reference.symbol:=tmplabel;
|
|
end;
|
|
|
|
|
|
begin
|
|
cdataconstnode:=tcgdataconstnode;
|
|
crealconstnode:=tcgrealconstnode;
|
|
cordconstnode:=tcgordconstnode;
|
|
cpointerconstnode:=tcgpointerconstnode;
|
|
cstringconstnode:=tcgstringconstnode;
|
|
csetconstnode:=tcgsetconstnode;
|
|
cnilnode:=tcgnilnode;
|
|
cguidconstnode:=tcgguidconstnode;
|
|
end.
|