{
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2000 by the Free Pascal development team.
Processor independent implementation for the system unit
(adapted for intel i386.inc file)
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
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.
**********************************************************************}
function align(addr : PtrUInt;alignment : PtrUInt) : PtrUInt;{$ifdef SYSTEMINLINE}inline;{$endif}
var
tmp,am1 : PtrUInt;
begin
am1:=alignment-1;
tmp:=addr+am1;
if alignment and am1=0 then
{ Alignment is a power of two. In practice alignments are powers of two 100% of the time. }
result:=tmp and not am1
else
result:=tmp-(tmp mod alignment);
end;
{$ifndef cpujvm}
function align(addr : Pointer;alignment : PtrUInt) : Pointer;{$ifdef SYSTEMINLINE}inline;{$endif}
var
tmp,am1 : PtrUInt;
begin
am1:=alignment-1;
tmp:=PtrUint(addr)+am1;
if alignment and am1=0 then
result:=pointer(tmp and not am1)
else
result:=pointer(ptruint(tmp-(tmp mod alignment)));
end;
{$endif}
{****************************************************************************
Primitives
****************************************************************************}
type
pstring = ^shortstring;
{$ifndef FPC_HAS_SHORTSTR_SHORTSTR_INTERN_CHARMOVE}
{$define FPC_HAS_SHORTSTR_SHORTSTR_INTERN_CHARMOVE}
procedure fpc_shortstr_shortstr_intern_charmove(const src: shortstring; const srcindex: byte; var dst: shortstring; const dstindex, len: byte); {$ifdef SYSTEMINLINE}inline;{$endif}
begin
move(src[srcindex],dst[dstindex],len);
end;
{$endif FPC_HAS_SHORTSTR_SHORTSTR_INTERN_CHARMOVE}
{$ifndef FPC_HAS_SHORTSTR_CHARARRAY_INTERN_CHARMOVE}
{$define FPC_HAS_SHORTSTR_CHARARRAY_INTERN_CHARMOVE}
procedure fpc_shortstr_chararray_intern_charmove(const src: shortstring; out dst: array of ansichar; const len: sizeint);
begin
move(src[1],PAnsiChar(@dst)^,len);
end;
{$endif FPC_HAS_SHORTSTR_CHARARRAY_INTERN_CHARMOVE}
{$ifndef FPC_SYSTEM_HAS_MOVE}
procedure Move(const source;var dest;count:SizeInt);[public, alias: 'FPC_MOVE'];
var
aligncount : sizeint;
pdest,psrc,pend : pbyte;
begin
if (@dest=@source) or (count<=0) then
exit;
if (@dest<@source) or (@source+count<@dest) then
begin
{ Forward Move }
psrc:=@source;
pdest:=@dest;
if (Count>4*sizeof(ptruint)-11)
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
and ((PtrUInt(pdest) and (sizeof(PtrUInt)-1))=(PtrUInt(psrc) and (sizeof(PtrUInt)-1)))
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
then
begin
{ Align on native pointer size }
aligncount:=(sizeof(PtrUInt)-PtrInt(pdest)) and (sizeof(PtrUInt)-1);
dec(count,aligncount);
pend:=psrc+aligncount;
while psrc<pend do
begin
pdest^:=psrc^;
inc(pdest);
inc(psrc);
end;
{ use sizeuint typecast to force shr optimization }
pptruint(pend):=pptruint(psrc)+(sizeuint(count) div sizeof(ptruint));
while psrc<pend do
begin
pptruint(pdest)^:=pptruint(psrc)^;
inc(pptruint(pdest));
inc(pptruint(psrc));
end;
count:=count and (sizeof(PtrUInt)-1);
end;
pend:=psrc+count;
while psrc<pend do
begin
pdest^:=psrc^;
inc(pdest);
inc(psrc);
end;
end
else
begin
{ Backward Move }
psrc:=@source+count;
pdest:=@dest+count;
if (Count>4*sizeof(ptruint)-11)
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
and ((PtrUInt(pdest) and (sizeof(PtrUInt)-1))=(PtrUInt(psrc) and (sizeof(PtrUInt)-1)))
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
then
begin
{ Align on native pointer size }
aligncount:=(PtrUInt(pdest) and (sizeof(PtrUInt)-1));
dec(count,aligncount);
pend:=psrc-aligncount;
while psrc>pend do
begin
dec(pdest);
dec(psrc);
pdest^:=psrc^;
end;
{ use sizeuint typecast to force shr optimization }
pptruint(pend):=pptruint(psrc)-(sizeuint(count) div sizeof(ptruint));
while psrc>pend do
begin
dec(pptruint(pdest));
dec(pptruint(psrc));
pptruint(pdest)^:=pptruint(psrc)^;
end;
count:=count and (sizeof(PtrUInt)-1);
end;
pend:=psrc-count;
while psrc>pend do
begin
dec(pdest);
dec(psrc);
pdest^:=psrc^;
end;
end;
end;
{$endif not FPC_SYSTEM_HAS_MOVE}
{$ifndef FPC_SYSTEM_HAS_FILLCHAR}
Procedure FillChar(var x;count:SizeInt;value:byte);
var
pdest,pend : pbyte;
v : ALUUInt;
begin
if count <= 0 then
exit;
pdest:=@x;
if Count>4*sizeof(ptruint)-1 then
begin
{$if sizeof(v)>=2}
v:=(value shl 8) or value;
{$endif sizeof(v)>=2}
{$if sizeof(v)>=4}
v:=(v shl 16) or v;
{$endif sizeof(v)>=4}
{$if sizeof(v)=8}
v:=(v shl 32) or v;
{$endif sizeof(v)=8}
{ Align on native pointer size }
pend:=pbyte(align(pdest,sizeof(PtrUInt)));
dec(count,pend-pdest);
while pdest<pend do
begin
pdest^:=value;
inc(pdest);
end;
{ use sizeuint typecast to force shr optimization }
pptruint(pend):=pptruint(pdest)+(sizeuint(count) div sizeof(ptruint));
while pdest<pend do
begin
pptruint(pdest)^:=v;
inc(pptruint(pdest));
end;
count:=count and (sizeof(ptruint)-1);
end;
pend:=pdest+count;
while pdest<pend do
begin
pdest^:=value;
inc(pdest);
end;
end;
{$endif FPC_SYSTEM_HAS_FILLCHAR}
{$ifndef FPC_SYSTEM_HAS_FILLWORD}
procedure fillword(var x;count : SizeInt;value : word);
var
aligncount : sizeint;
pdest,pend : pword;
v : ALUUInt;
begin
if count <= 0 then
exit;
pdest:=@x;
if Count>4*sizeof(ptruint)-1 then
begin
{$if sizeof(v)>=4}
v:=(value shl 16) or value;
{$endif sizeof(v)>=4}
{$if sizeof(v)=8}
v:=(v shl 32) or v;
{$endif sizeof(v)=8}
{ Align on native pointer size }
aligncount:=(PtrUInt(pdest) and (sizeof(PtrUInt)-1)) shr 1;
dec(count,aligncount);
pend:=pdest+aligncount;
while pdest<pend do
begin
pdest^:=value;
inc(pdest);
end;
{ use sizeuint typecast to force shr optimization }
pptruint(pend):=pptruint(pdest)+((sizeuint(count)*2) div sizeof(ptruint));
while pdest<pend do
begin
pptruint(pdest)^:=v;
inc(pptruint(pdest));
end;
count:=((count*2) and (sizeof(ptruint)-1)) shr 1;
end;
pend:=pdest+count;
while pdest<pend do
begin
pdest^:=value;
inc(pdest);
end;
end;
{$endif not FPC_SYSTEM_HAS_FILLWORD}
{$ifndef FPC_SYSTEM_HAS_FILLDWORD}
procedure filldword(var x;count : SizeInt;value : dword);
var
aligncount : sizeint;
pdest,pend : pdword;
v : ALUUInt;
begin
if count <= 0 then
exit;
pdest:=@x;
if Count>4*sizeof(ptruint)-1 then
begin
v:=value;
{$if sizeof(v)=8}
v:=(v shl 32) or v;
{$endif sizeof(v)=8}
{ Align on native pointer size }
aligncount:=(PtrUInt(pdest) and (sizeof(PtrUInt)-1)) shr 2;
dec(count,aligncount);
pend:=pdest+aligncount;
while pdest<pend do
begin
pdest^:=value;
inc(pdest);
end;
{ use sizeuint typecast to force shr optimization }
pptruint(pend):=pptruint(pdest)+((sizeuint(count)*4) div sizeof(ptruint));
while pdest<pend do
begin
pptruint(pdest)^:=v;
inc(pptruint(pdest));
end;
count:=((count*4) and (sizeof(ptruint)-1)) shr 2;
end;
pend:=pdest+count;
while pdest<pend do
begin
pdest^:=value;
inc(pdest);
end;
end;
{$endif FPC_SYSTEM_HAS_FILLDWORD}
{$ifndef FPC_SYSTEM_HAS_FILLQWORD}
procedure fillqword(var x;count : SizeInt;value : qword);
var
pdest,pend : pqword;
begin
if count <= 0 then
exit;
pdest:=@x;
pend:=pdest+count;
while pdest<pend do
begin
pdest^:=value;
inc(pdest);
end;
end;
{$endif FPC_SYSTEM_HAS_FILLQWORD}
{$ifndef FPC_SYSTEM_HAS_INDEXBYTE}
function IndexByte(Const buf;len:SizeInt;b:byte):SizeInt;
var
psrc,pend : pbyte;
begin
psrc:=@buf;
pend:=psrc+len;
{ simulate assembler implementations behaviour, which is expected }
{ fpc_pchar_to_ansistr in astrings.inc }
if (len < 0) or
(pend < psrc) then
pend:=pbyte(high(PtrUInt)-PtrUint(sizeof(byte)));
while (psrc<pend) and (psrc^<>b) do
inc(psrc);
if psrc<pend then
result:=psrc-pbyte(@buf)
else
result:=-1;
end;
{$endif not FPC_SYSTEM_HAS_INDEXBYTE}
{$ifndef FPC_SYSTEM_HAS_INDEXWORD}
function Indexword(Const buf;len:SizeInt;b:word):SizeInt;
var
psrc,pend : pword;
begin
psrc:=@buf;
pend:=psrc+len;
{ simulate assembler implementations behaviour, which is expected }
{ fpc_pchar_to_ansistr in astrings.inc }
if not (
(len >= 0) and
{ is this ever false? }
(len <= high(PtrInt))) or
(pend < psrc) then
pend:=pword(high(PtrUInt)-PtrUint(sizeof(word)));
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
if (ptruint(psrc) mod 2)<>0 then
while (psrc<pend) and (unaligned(psrc^)<>b) do
inc(psrc)
else
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
while (psrc<pend) and (psrc^<>b) do
inc(psrc);
if psrc<pend then
{ the result is always >=0 so avoid handling of negative values }
result:=PtrUint(pointer(psrc)-pointer(@buf)) div sizeof(word)
else
result:=-1;
end;
{$endif not FPC_SYSTEM_HAS_INDEXWORD}
{$ifndef FPC_SYSTEM_HAS_INDEXDWORD}
function IndexDWord(Const buf;len:SizeInt;b:DWord):SizeInt;
var
psrc,pend : pdword;
begin
psrc:=@buf;
pend:=psrc+len;
{ simulate assembler implementations behaviour, which is expected }
{ fpc_pchar_to_ansistr in astrings.inc }
if not (
(len >= 0) and
(len <= high(PtrInt) div 2)) or
(pend < psrc) then
pend:=pdword(high(PtrUInt)-PtrUInt(sizeof(dword)));
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
if (ptruint(psrc) mod 4)<>0 then
while (psrc<pend) and (unaligned(psrc^)<>b) do
inc(psrc)
else
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
while (psrc<pend) and (psrc^<>b) do
inc(psrc);
if psrc<pend then
{ the result is always >=0 so avoid handling of negative values }
result:=PtrUint(pointer(psrc)-pointer(@buf)) div sizeof(DWord)
else
result:=-1;
end;
{$endif not FPC_SYSTEM_HAS_INDEXDWORD}
{$ifndef FPC_SYSTEM_HAS_INDEXQWORD}
function IndexQWord(Const buf;len:SizeInt;b:QWord):SizeInt;
var
psrc,pend : pqword;
begin
psrc:=@buf;
pend:=psrc+len;
{ simulate assembler implementations behaviour, which is expected }
{ fpc_pchar_to_ansistr in astrings.inc }
if not (
(len >= 0) and
(len <= high(PtrInt) div 4)) or
(pend < psrc) then
pend:=pqword(high(PtrUInt)-PtrUInt(sizeof(qword)));
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
if (ptruint(psrc) mod 8)<>0 then
while (psrc<pend) and (unaligned(psrc^)<>b) do
inc(psrc)
else
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
while (psrc<pend) and (psrc^<>b) do
inc(psrc);
if psrc<pend then
{ the result is always >=0 so avoid handling of negative values }
result:=PtrUint(pointer(psrc)-pointer(@buf)) div sizeof(QWord)
else
result:=-1;
end;
{$endif not FPC_SYSTEM_HAS_INDEXQWORD}
{$ifndef FPC_SYSTEM_HAS_COMPAREBYTE}
function CompareByte(Const buf1,buf2;len:SizeInt):SizeInt;
var
psrc,pdest,pend,pendpart : pbyte;
begin
psrc:=@buf1;
pdest:=@buf2;
pend:=psrc+len;
if (pend<psrc) then
pend:=pbyte(high(ptruint));
if (len>=2*sizeof(ptruint))
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
and ((PtrUInt(pdest) and (sizeof(PtrUInt)-1))=(PtrUInt(psrc) and (sizeof(PtrUInt)-1)))
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
then
begin
{ Align "psrc" on native pointer size. }
PtrUint(pendpart):=PtrUint(psrc+(sizeof(PtrUint)-1)) and PtrUint(not PtrUint(sizeof(PtrUint)-1));
if psrc<pendpart then
begin
while (psrc<pendpart) and (psrc^=pdest^) do
begin
inc(pdest);
inc(psrc);
end;
if psrc<pendpart then
exit(sizeint(psrc^)-sizeint(pdest^));
end;
{ "pend" is the end of "psrc" and "psrc" is aligned, so aligned "pend" can be obtained this way. }
PtrUint(pendpart):=PtrUint(pend) and PtrUint(not PtrUint(sizeof(PtrUint)-1));
while (psrc<pendpart) and (pptruint(psrc)^=pptruint(pdest)^) do
begin
inc(pptruint(pdest));
inc(pptruint(psrc));
end;
if psrc<pendpart then
pend:=psrc+sizeof(ptruint);
end;
while (psrc<pend) and (psrc^=pdest^) do
begin
inc(pdest);
inc(psrc);
end;
if psrc<pend then
exit(sizeint(psrc^)-sizeint(pdest^));
result:=0;
end;
{$endif not FPC_SYSTEM_HAS_COMPAREBYTE}
{$ifndef FPC_SYSTEM_HAS_COMPAREWORD}
function CompareWord(Const buf1,buf2;len:SizeInt):SizeInt;
var
psrc,pdest,pend,pendpart : pword;
begin
psrc:=@buf1;
pdest:=@buf2;
pend:=psrc+len;
if (pend<psrc) or not ((len>=0) and (len<=High(PtrInt) div 2)) then
pend:=pword(high(ptruint)-2);
if (len>=2*sizeof(ptruint)) { len in words, so at least four pointers }
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
and ((PtrUInt(pdest) xor PtrUInt(psrc)) and (sizeof(PtrUInt)-1)=0)
and (PtrUInt(psrc) and 1=0)
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
then
begin
{ Align on native pointer size. Careful, these 'pendpart's are aligned even if 'psrc' is misaligned, so "psrc<>pendpart" must not be used. }
PtrUint(pendpart):=(PtrUint(psrc)+(sizeof(PtrUint)-1)) and PtrUint(not PtrUint(sizeof(PtrUint)-1));
while (psrc<pendpart) and (psrc^=pdest^) do
begin
inc(pdest);
inc(psrc);
end;
if psrc<pendpart then
exit(2*ord(psrc^>pdest^)-1);
PtrUint(pendpart):=PtrUint(pend) and PtrUint(not PtrUint(sizeof(PtrUint)-1));
while (psrc<pendpart) and (pptrint(psrc)^=pptrint(pdest)^) do
begin
inc(pptruint(pdest));
inc(pptruint(psrc));
end;
if psrc<pendpart then
pointer(pend):=pointer(psrc)+sizeof(ptruint);
end;
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
if (PtrUInt(pdest) or PtrUInt(psrc)) and 1<>0 then
begin
while (psrc<pend) and (unaligned(psrc^)=unaligned(pdest^)) do
begin
inc(pdest);
inc(psrc);
end;
if psrc<pend then
exit(2*ord(unaligned(psrc^)>unaligned(pdest^))-1);
end
else
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
begin
while (psrc<pend) and (psrc^=pdest^) do
begin
inc(pdest);
inc(psrc);
end;
if psrc<pend then
exit(2*ord(psrc^>pdest^)-1);
end;
result:=0;
end;
{$endif not FPC_SYSTEM_HAS_COMPAREWORD}
{$ifndef FPC_SYSTEM_HAS_COMPAREDWORD}
function CompareDWord(Const buf1,buf2;len:SizeInt):SizeInt;
var
psrc,pdest,pend,pendpart : pdword;
begin
psrc:=@buf1;
pdest:=@buf2;
pend:=psrc+len;
if (pend<psrc) or not ((len>=0) and (len<=High(PtrInt) div 4)) then
pend:=pdword(high(ptruint)-4);
{$if sizeof(ptruint)>sizeof(dword)}
if (len>=sizeof(ptruint)) { len in uint32s, so at least four pointers }
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
and ((PtrUInt(pdest) xor PtrUInt(psrc)) and (sizeof(PtrUInt)-1)=0)
and (PtrUInt(psrc) and 3=0)
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
then
begin
{ Align on native pointer size. Careful, these 'pendpart's are aligned even if 'psrc' is misaligned, so "psrc<>pendpart" must not be used. }
PtrUint(pendpart):=(PtrUint(psrc)+(sizeof(PtrUint)-1)) and PtrUint(not PtrUint(sizeof(PtrUint)-1));
while (psrc<pendpart) and (psrc^=pdest^) do
begin
inc(pdest);
inc(psrc);
end;
if psrc<pendpart then
exit(2*ord(psrc^>pdest^)-1);
PtrUint(pendpart):=PtrUint(pend) and PtrUint(not PtrUint(sizeof(PtrUint)-1));
while (psrc<pendpart) and (pptrint(psrc)^=pptrint(pdest)^) do
begin
inc(pptruint(pdest));
inc(pptruint(psrc));
end;
if psrc<pendpart then
pointer(pend):=pointer(psrc)+sizeof(ptruint);
end;
{$endif sizeof(ptruint)>sizeof(dword)}
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
if (PtrUInt(pdest) or PtrUInt(psrc)) and 3<>0 then
begin
while (psrc<pend) and (unaligned(psrc^)=unaligned(pdest^)) do
begin
inc(pdest);
inc(psrc);
end;
if psrc<pend then
exit(2*ord(unaligned(psrc^)>unaligned(pdest^))-1);
end
else
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
begin
while (psrc<pend) and (psrc^=pdest^) do
begin
inc(pdest);
inc(psrc);
end;
if psrc<pend then
exit(2*ord(psrc^>pdest^)-1);
end;
result:=0;
end;
{$endif ndef FPC_SYSTEM_HAS_COMPAREDWORD}
{$ifndef FPC_SYSTEM_HAS_MOVECHAR0}
procedure MoveChar0(Const buf1;var buf2;len:SizeInt);
var
I : SizeInt;
begin
if Len = 0 then
exit;
I:=IndexByte(Buf1,Len,0);
if I<>-1 then
Move(Buf1,Buf2,I)
else
Move(Buf1,Buf2,len);
end;
{$endif ndef FPC_SYSTEM_HAS_MOVECHAR0}
{$ifndef FPC_SYSTEM_HAS_INDEXCHAR0}
function IndexChar0(Const buf;len:SizeInt;b:AnsiChar):SizeInt;
var
psrc,pend : pbyte;
begin
psrc:=@buf;
{ simulate assembler implementations behaviour, which is expected }
{ fpc_pchar_to_ansistr in astrings.inc }
if (len < 0) then
pend:=pbyte(high(PtrUInt)-PtrUInt(sizeof(byte)))
else
pend:=psrc+len;
while (psrc<pend) and (psrc^<>0) do
begin
if (psrc^=byte(b)) then
begin
result:=psrc-pbyte(@buf);
exit;
end;
inc(psrc);
end;
result:=-1;
end;
{$endif ndef FPC_SYSTEM_HAS_INDEXCHAR0}
{$ifndef FPC_SYSTEM_HAS_COMPARECHAR0}
function CompareChar0(Const buf1,buf2;len:SizeInt):SizeInt;
var
psrc,pdest,pend : pbyte;
b : ptrint;
begin
b:=0;
psrc:=@buf1;
pdest:=@buf2;
pend:=psrc+len;
while psrc<pend do
begin
b:=(ptrint(psrc^)-ptrint(pdest^));
if b<0 then
exit(-1)
else if b>0 then
exit(1);
if (psrc^=0) or (pdest^=0) then
exit(0);
inc(pdest);
inc(psrc);
end;
result:=0;
end;
{$endif not FPC_SYSTEM_HAS_COMPARECHAR0}
{$if not defined(FPC_SYSTEM_HAS_MEMPOS_PBYTE) and not defined(CPUJVM)}
function MemPos(needle:PByte;nNeedle:SizeUint;haystack:PByte;nHaystack:SizeUint):SizeInt;
var
p,d,pmaxplus1,iNeedle : SizeUint;
begin
p:=0;
if SizeUint(nNeedle-1)<nHaystack then { (nNeedle > 0) and (nNeedle <= nHaystack) }
begin
pmaxplus1:=nHaystack-nNeedle+1;
iNeedle:=0;
repeat
if iNeedle=0 then
iNeedle:=nNeedle;
dec(iNeedle);
d:=IndexByte(haystack[p+iNeedle],pmaxplus1-p,needle[iNeedle])+1;
inc(p,d);
until (d=0) or (CompareByte(haystack[p-1],needle^,nNeedle)=0);
if d=0 then
p:=0;
end;
result:=SizeInt(p)-1;
end;
{$endif not FPC_SYSTEM_HAS_MEMPOS_PBYTE}
{****************************************************************************
Object Helpers
****************************************************************************}
{$ifdef FPC_HAS_FEATURE_OBJECTS}
type
pobjectvmt=^tobjectvmt;
tobjectvmt=record
size,msize:sizeuint;
parent:ppointer;
end;
{$ifndef FPC_SYSTEM_HAS_FPC_HELP_CONSTRUCTOR}
{ Note: _vmt will be reset to -1 when memory is allocated,
this is needed for fpc_help_fail }
function fpc_help_constructor(_self:pointer;var _vmt:pointer;_vmt_pos:cardinal):pointer;[public,alias:'FPC_HELP_CONSTRUCTOR'];compilerproc;
var
vmtcopy : pobjectvmt;
begin
vmtcopy:=pobjectvmt(_vmt);
{ Inherited call? }
if vmtcopy=nil then
begin
fpc_help_constructor:=_self;
exit;
end;
if (_self=nil) and
(vmtcopy^.size>0) then
begin
getmem(_self,vmtcopy^.size);
{ reset vmt needed for fail }
_vmt:=pointer(-1);
end;
if _self<>nil then
begin
fillchar(_self^,vmtcopy^.size,0);
ppointer(_self+_vmt_pos)^:=vmtcopy;
end;
fpc_help_constructor:=_self;
end;
{$endif FPC_SYSTEM_HAS_FPC_HELP_CONSTRUCTOR}
{$ifndef FPC_SYSTEM_HAS_FPC_HELP_DESTRUCTOR}
{ Note: _self will not be reset, the compiler has to generate the reset }
procedure fpc_help_destructor(_self,_vmt:pointer;vmt_pos:cardinal);[public,alias:'FPC_HELP_DESTRUCTOR']; compilerproc;
begin
{ already released? }
if (_self=nil) or
(_vmt<>pointer(-1)) or
(ppointer(_self+vmt_pos)^=nil) then
exit;
if (pobjectvmt(ppointer(_self+vmt_pos)^)^.size=0) or
(pobjectvmt(ppointer(_self+vmt_pos)^)^.size+pobjectvmt(ppointer(_self+vmt_pos)^)^.msize<>0) then
HandleErrorAddrFrameInd(210,get_pc_addr,get_frame);
{ reset vmt to nil for protection }
ppointer(_self+vmt_pos)^:=nil;
freemem(_self);
end;
{$endif FPC_SYSTEM_HAS_FPC_HELP_DESTRUCTOR}
{$ifndef FPC_SYSTEM_HAS_FPC_HELP_FAIL}
{ Note: _self will not be reset, the compiler has to generate the reset }
procedure fpc_help_fail(_self:pointer;var _vmt:pointer;vmt_pos:cardinal);[public,alias:'FPC_HELP_FAIL'];compilerproc;
begin
if (_self=nil) or (_vmt=nil) then
exit;
{ vmt=$ffffffff when memory was allocated }
if ptruint(_vmt)=high(ptruint) then
begin
if (_self=nil) or (ppointer(_self+vmt_pos)^=nil) then
HandleError(210)
else
begin
ppointer(_self+vmt_pos)^:=nil;
freemem(_self);
{ reset _vmt to nil so it will not be freed a
second time }
_vmt:=nil;
end;
end
else
ppointer(_self+vmt_pos)^:=nil;
end;
{$endif FPC_SYSTEM_HAS_FPC_HELP_FAIL}
{$ifndef FPC_SYSTEM_HAS_FPC_CHECK_OBJECT}
procedure fpc_check_object(_vmt : pointer); [public,alias:'FPC_CHECK_OBJECT']; compilerproc;
begin
if (_vmt=nil) or
(pobjectvmt(_vmt)^.size=0) or
(pobjectvmt(_vmt)^.size+pobjectvmt(_vmt)^.msize<>0) then
HandleErrorAddrFrameInd(210,get_pc_addr,get_frame);
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_CHECK_OBJECT}
{$ifndef FPC_SYSTEM_HAS_FPC_CHECK_OBJECT_EXT}
{ checks for a correct vmt pointer }
{ deeper check to see if the current object is }
{ really related to the true }
procedure fpc_check_object_ext(vmt, expvmt : pointer); [public,alias:'FPC_CHECK_OBJECT_EXT']; compilerproc;
begin
if (vmt=nil) or
(pobjectvmt(vmt)^.size=0) or
(pobjectvmt(vmt)^.size+pobjectvmt(vmt)^.msize<>0) then
HandleErrorAddrFrameInd(210,get_pc_addr,get_frame);
while assigned(vmt) do
if vmt=expvmt then
exit
else
if assigned(pobjectvmt(vmt)^.parent) then
vmt:=pobjectvmt(vmt)^.parent^
else
vmt:=nil;
HandleErrorAddrFrameInd(219,get_pc_addr,get_frame);
end;
{$endif not FPC_SYSTEM_HAS_FPC_CHECK_OBJECT_EXT}
{$endif FPC_HAS_FEATURE_OBJECTS}
{****************************************************************************
String
****************************************************************************}
{$ifndef FPC_SYSTEM_HAS_FPC_SHORTSTR_ASSIGN}
procedure fpc_shortstr_to_shortstr(out res:shortstring; const sstr: shortstring);[public,alias:'FPC_SHORTSTR_TO_SHORTSTR']; compilerproc;
var
slen : byte;
begin
slen:=length(sstr);
if slen>high(res) then
slen:=high(res);
move(sstr[0],res[0],slen+1);
res[0]:=chr(slen);
end;
procedure fpc_shortstr_assign(len:{$ifdef cpu16}smallint{$else}longint{$endif};sstr,dstr:pointer);[public,alias:'FPC_SHORTSTR_ASSIGN']; compilerproc;
var
slen : byte;
begin
slen:=length(pshortstring(sstr)^);
if slen<len then
len:=slen;
move(sstr^,dstr^,len+1);
if slen>len then
PAnsiChar(dstr)^:=chr(len);
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_SHORTSTR_ASSIGN}
{$push}
{ ensure that comparing addresses of openshortstrings with regular shortstrings
doesn't cause errors }
{$t-}
{$ifndef FPC_SYSTEM_HAS_FPC_SHORTSTR_CONCAT}
procedure fpc_shortstr_concat(var dests:shortstring;const s1,s2:shortstring);compilerproc;
var
s1l, s2l : ObjpasInt;
begin
s1l:=length(s1);
s2l:=length(s2);
if s1l+s2l>high(dests) then
begin
if s1l>high(dests) then
s1l:=high(dests);
s2l:=high(dests)-s1l;
end;
{ Copy s2 first, as in the case of @dests = @s2 it must be copied first and in other cases the order does not matter. }
fpc_shortstr_shortstr_intern_charmove(s2,1,dests,s1l+1,s2l);
if @dests<>@s1 then
fpc_shortstr_shortstr_intern_charmove(s1,1,dests,1,s1l);
dests[0]:=chr(s1l+s2l);
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_SHORTSTR_CONCAT}
{$ifndef FPC_SYSTEM_HAS_FPC_SHORTSTR_CONCAT_MULTI}
procedure fpc_shortstr_concat_multi(var dests:shortstring;const sarr:array of pshortstring);compilerproc;
var
i,s2l,Len,destpos0 : ObjpasInt;
p : pshortstring;
begin
Len:=0;
i:=0;
while (i<=high(sarr)) do
begin
p:=sarr[i];
if assigned(p) then
inc(Len,length(p^));
inc(i);
end;
destpos0:=Len;
{ Copy strings from the last to the first, so that possible occurences of DestS read correct DestS.
DestS[0] = length(DestS) must have its original value for a while! }
while (destpos0>0) do
begin
dec(i);
p:=sarr[i];
if not assigned(p) then
continue;
s2l:=length(p^);
dec(destpos0,s2l);
if (destpos0=0) and (p=@dests) then { Skip moving DestS to itself when appending. This destpos0-based form also catches DestS := '' + '' + DestS. }
break;
if destpos0+s2l>high(dests) then
begin
if destpos0>=high(dests) then
continue;
s2l:=high(dests)-destpos0;
end;
fpc_shortstr_shortstr_intern_charmove(p^,1,dests,destpos0+1,s2l);
end;
if Len>high(dests) then
Len:=high(dests);
dests[0]:=Chr(Len); { Careful, loop above relies on DestS[0] having the original value. }
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_SHORTSTR_CONCAT_MULTI}
{$pop}
{$ifndef FPC_SYSTEM_HAS_FPC_SHORTSTR_APPEND_SHORTSTR}
procedure fpc_shortstr_append_shortstr(var s1:shortstring;const s2:shortstring);compilerproc;
[public,alias:'FPC_SHORTSTR_APPEND_SHORTSTR'];
var
s1l, s2l : sizeint;
begin
s1l:=length(s1);
s2l:=length(s2);
if s1l+s2l>high(s1) then
s2l:=high(s1)-s1l;
move(s2[1],s1[s1l+1],s2l);
s1[0]:=chr(s1l+s2l);
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_SHORTSTR_APPEND_SHORTSTR}
{$ifndef FPC_SYSTEM_HAS_FPC_SHORTSTR_COMPARE}
function fpc_shortstr_compare(const left,right:shortstring) : longint;[public,alias:'FPC_SHORTSTR_COMPARE']; compilerproc;
var
s1,s2,max : byte;
begin
s1:=length(left);
s2:=length(right);
if s1<s2 then
max:=s1
else
max:=s2;
result:=CompareByte(left[1],right[1],max);
if result=0 then
result:=s1-s2;
result:=ord(result>0)-ord(result<0);
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_SHORTSTR_COMPARE}
{$ifndef FPC_SYSTEM_HAS_FPC_SHORTSTR_COMPARE_EQUAL}
function fpc_shortstr_compare_equal(const left,right:shortstring): longint; [public,alias:'FPC_SHORTSTR_COMPARE_EQUAL']; compilerproc;
begin
Result := ObjpasInt(left[0]) - ObjpasInt(right[0]);
if Result = 0 then
Result := CompareByte(left[1],right[1], ObjpasInt(left[0]));
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_SHORTSTR_COMPARE_EQUAL}
{$ifndef FPC_SYSTEM_HAS_FPC_PCHAR_TO_SHORTSTR}
procedure fpc_pchar_to_shortstr(out res : shortstring;p:PAnsiChar);[public,alias:'FPC_PCHAR_TO_SHORTSTR']; compilerproc;
var
l : ObjpasInt;
begin
if p=nil then
begin
res[0]:=#0;
exit;
end;
{ On platforms where IndexByte with len > 0 will not read the invalid memory past the null terminator, high(res) can be used as a limit. }
{$if defined(cpui386) or defined(cpux86_64)}
l:=IndexByte(p^,high(res),0);
if l<0 then
l:=high(res);
{$else IndexByte(p^,high(res),0) can crash}
l:=strlen(p);
if l>high(res) then
l:=high(res);
{$endif IndexByte(p^,high(res),0) can crash}
move(p^,res[1],l);
res[0]:=chr(l);
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_PCHAR_TO_SHORTSTR}
{$ifndef cpujvm}
{ also define alias which can be used inside the system unit }
procedure fpc_pchar_to_shortstr(out res : shortstring;p:PAnsiChar);[external name 'FPC_PCHAR_TO_SHORTSTR'];
function strpas(p:PAnsiChar):shortstring;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
fpc_pchar_to_shortstr(result,p);
end;
{$endif not cpujvm}
{ Combining codepoints are those belonging to one of the three "Mark" general categories.
UnicodeData.txt column 3 has M* for them: Mn, Mc, Me.
Using the table below, codepoint %...XXXXXXXX_YYYY_ZZZZZ can be classified as combining or not with a 3-level lookup:
if %...XXXXXXXX <= High(IsCombinings.L2) then
begin
index := IsCombinings.L2[%XXXXXXXX];
index := IsCombinings.L1[index][%YYYY];
IsCombining := boolean(IsCombinings.L0[index] shr %ZZZZZ and 1);
end else
IsCombining := false;
Equivalent one-liner:
IsCombining := (%...XXXXXXXX <= High(IsCombinings.L2)) and (IsCombinings.L0[IsCombinings.L1[IsCombinings.L2[%XXXXXXXX]][%YYYY]] shr %ZZZZZ and 1 <> 0);
Additionally, there is a combining range U+E0100..U+E01EF far to the right, not included into the table to save 1 level.
Table built from UnicodeData.txt 15.0.0 (September 2022). }
const
IsCombinings: record
L2: array[0 .. 244] of uint8;
L1: array[0 .. 46, 0 .. 15] of uint8;
L0: array[0 .. 161] of uint32;
end =
(
L2: (
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, {10} 0, 10, 11, 12, 13, 0, 14, 0, 0, 0, {20} 0, 0, 15, 0, 16, 0, 0, 0, 0, 0, {30} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
{40} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {50} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {60} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {70} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {80} 0,
0, 0, 17, 18, 19, 0, 0, 0, 0, {90} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {100} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {110} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {120} 0, 0,
0, 0, 0, 20, 0, 21, 22, 23, {130} 0, 0, 0, 24, 25, 26, 27, 28, 29, 30, {140} 31, 32, 33, 34, 0, 0, 0, 0, 0, 0, {150} 0, 0, 0, 0, 35, 0, 0, 0, 0, 0,
{160} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {170} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {180} 0, 36, 0, 37, 0, 0, 0, 0, 0, 0, {190} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
{200} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {210} 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {220} 0, 0, 38, 0, 0, 0, 0, 0, 0, 0, {230} 0, 39, 40, 41, 0, 0, 0, 42, 0, 0,
{240} 43, 44, 45, 0, 46
);
L1: (
{0} (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), (0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 2, 0, 0, 0, 0),
{2} (0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 4, 5, 6, 0), (7, 0, 8, 9, 0, 0, 10, 11, 12, 13, 14, 0, 0, 15, 0, 16),
{4} (17, 18, 19, 0, 20, 0, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30), (27, 28, 31, 32, 27, 28, 33, 34, 27, 28, 35, 26, 36, 37, 38, 0),
{6} (39, 28, 40, 26, 27, 28, 40, 41, 23, 42, 43, 26, 27, 0, 44, 45), (0, 46, 47, 0, 0, 48, 49, 0, 50, 51, 0, 4, 52, 53, 54, 0),
{8} (0, 55, 56, 57, 58, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 59, 0, 0, 0, 0, 0),
{10} (0, 0, 0, 0, 0, 0, 0, 0, 60, 61, 45, 45, 0, 62, 63, 0), (64, 0, 0, 0, 65, 66, 0, 0, 0, 67, 0, 0, 0, 0, 0, 0),
{12} (68, 0, 69, 70, 0, 13, 1, 1, 39, 62, 39, 71, 72, 73, 0, 74), (0, 75, 0, 0, 0, 0, 76, 77, 0, 0, 0, 0, 0, 0, 1, 1),
{14} (0, 0, 0, 0, 0, 0, 13, 1, 0, 0, 0, 0, 0, 0, 0, 0), (0, 0, 0, 0, 0, 0, 0, 78, 0, 0, 0, 79, 0, 0, 0, 1),
{16} (0, 80, 0, 0, 81, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), (0, 0, 0, 82, 37, 0, 0, 83, 0, 0, 0, 0, 0, 0, 0, 0),
{18} (84, 85, 0, 0, 86, 62, 87, 88, 0, 89, 90, 0, 23, 91, 92, 93), (0, 94, 95, 96, 0, 97, 98, 99, 0, 0, 0, 0, 0, 0, 0, 100),
{20} (0, 0, 0, 0, 0, 0, 0, 0, 101, 0, 0, 0, 0, 0, 0, 0), (2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
{22} (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 102), (0, 0, 0, 0, 0, 0, 0, 92, 0, 0, 0, 103, 0, 0, 0, 0),
{24} (104, 105, 0, 0, 0, 0, 0, 65, 0, 0, 0, 0, 0, 0, 0, 0), (0, 0, 0, 0, 0, 0, 0, 0, 0, 106, 0, 0, 0, 0, 0, 0),
{26} (0, 0, 0, 0, 0, 107, 0, 59, 0, 0, 15, 0, 108, 0, 0, 0), (72, 20, 109, 110, 72, 7, 36, 0, 72, 111, 65, 112, 72, 91, 113, 0),
{28} (0, 114, 98, 0, 0, 0, 79, 14, 23, 42, 29, 115, 0, 0, 0, 0), (0, 116, 117, 0, 0, 13, 23, 0, 0, 0, 0, 0, 0, 118, 119, 0),
{30} (0, 13, 92, 0, 0, 120, 0, 0, 59, 121, 0, 0, 0, 0, 0, 0), (0, 122, 0, 0, 0, 0, 0, 0, 0, 123, 124, 0, 0, 0, 125, 126),
{32} (127, 128, 129, 0, 130, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), (0, 131, 0, 0, 132, 133, 0, 0, 0, 134, 135, 0, 136, 0, 0, 0),
{34} (0, 0, 0, 0, 0, 0, 0, 137, 138, 139, 72, 0, 0, 0, 0, 0), (0, 0, 140, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
{36} (0, 0, 0, 0, 0, 0, 0, 141, 0, 142, 0, 0, 0, 0, 0, 0), (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 143, 1, 144, 0, 0, 145),
{38} (0, 0, 0, 0, 146, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), (0, 0, 0, 0, 0, 0, 0, 0, 1, 147, 109, 0, 0, 0, 0, 0),
{40} (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 148, 149, 150, 0, 0), (0, 0, 151, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
{42} (1, 152, 1, 153, 154, 155, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), (156, 157, 0, 0, 158, 0, 0, 0, 0, 142, 0, 0, 0, 0, 0, 0),
{44} (0, 0, 0, 0, 0, 159, 0, 160, 0, 0, 0, 0, 0, 0, 0, 0), (0, 0, 0, 0, 0, 0, 0, 160, 0, 0, 0, 0, 0, 0, 0, 0),
{46} (0, 0, 0, 0, 0, 0, 142, 0, 0, 0, 161, 0, 0, 0, 0, 0)
);
L0: (
{0} $00000000, $FFFFFFFF, $0000FFFF, $000003F8, $FFFE0000, $BFFFFFFF, $000000B6, $07FF0000, $FFFFF800, $00010000, $9FC00000, $00003D9F, $00020000,
{13} $FFFF0000, $000007FF, $0001FFC0, $200FF800, $FBC00000, $00003EEF, $0E000000, $FF000000, $FFFFFC00, $FFFFFFFB, $0000000F, $DC000000, $00FEFFFF,
{26} $0000000C, $0000000E, $D0000000, $0080399F, $4000000C, $00023987, $00230000, $00003BBF, $FC00000C, $00E0399F, $00000004, $C0000000, $00803DC7,
{39} $0000001F, $00603DDF, $0008000C, $D8000000, $00803DDF, $FF5F8400, $000C0000, $07F20000, $00007F80, $1FF20000, $00007F00, $03000000, $C2A00000,
{52} $FEFFE0DF, $1FFFFFFF, $00000040, $7FFFF800, $C3C00000, $001E3F9D, $3C00BFFC, $E0000000, $003C0000, $001C0000, $FFF00000, $200FFFFF, $0000B800,
{65} $00000060, $00000200, $0FFF0FFF, $0F800000, $7FE00000, $9FFFFFFF, $000FF800, $00000007, $00003FFE, $000FFFC0, $00FFFFF0, $FFF70000, $039021FF,
{78} $00038000, $80000000, $0000FC00, $06000000, $3FF78000, $00030000, $00000844, $000010F8, $00000003, $0000003F, $8003FFFF, $00003FC0, $000FFF80,
{91} $FFF80000, $00000001, $00000020, $007FFE00, $00003008, $38000000, $C19D0000, $00000002, $0060F800, $000037F8, $40000000, $20000000, $07C00000,
{104} $0000F06E, $87000000, $000000F0, $00001800, $0000003C, $0000007F, $80190000, $001FFF80, $00080000, $0000DE01, $40FFF000, $001F1FCC, $FFE00000,
{117} $4000007F, $FF3F8000, $30000001, $00FFF800, $00000FFF, $07FFF000, $79BF0000, $0000000D, $FCFE0000, $00000011, $000007FE, $7BF80000, $0FFE0080,
{130} $03FFFC00, $FF7F8000, $FFFC0000, $007FFEFF, $B47E0000, $000000BF, $00FB7C00, $00780000, $0000000B, $C7F00000, $003FFF81, $001F0000, $007F0000,
{143} $FFFE8000, $000780FF, $00030010, $60000000, $FFFF3FFF, $F807E3E0, $00000FE7, $00003C00, $0000001C, $F87FFFFF, $00201FFF, $F8000010, $0000FFFE,
{156} $F9FFFF7F, $000007DB, $00008000, $00004000, $0000F000, $000007F0
);
);
function Utf8CodePointLen(P: PAnsiChar; MaxLookAhead: SizeInt; IncludeCombiningDiacriticalMarks: Boolean): SizeInt;
var
cp: uint32;
iByte,cpLen: SizeInt;
begin
{ see https://en.wikipedia.org/wiki/UTF-8#Description for details }
result:=0;
{ result = 0 when scanning first character, result > 0 when scanning potential diacritical marks following it.
Common case is correct UTF-8.
Setting cpLen and breaking from the loop (instead of exiting) will handle invalid/incomplete cases
when cpLen bytes were expected, but not all are present/valid.
This keeps the code more compact, both source and binary. }
repeat
if MaxLookAhead<1 then
exit;
case ord(P[result]) of
{ One-byte codepoints have the form
%(0)xxxxxxx. }
0..$7F {%01111111}:
{ There are no diacritics among them. }
if not IncludeCombiningDiacriticalMarks then
exit(1)
else if result=0 then
begin
result:=1;
Dec(MaxLookAhead);
end
else
exit;
{ Two-byte codepoints have the form
%(110)xxxxx (10)xxxxxx.
but also minimum value of $80 = %10000000 =
%(110)00010 (10)000000. }
$C2 {%11000010}..$DF {%11011111}:
if (MaxLookAhead>=2) and
(ord(P[result+1]) and $C0=$80) then
begin
if not IncludeCombiningDiacriticalMarks then
exit(2);
if result>0 then
begin
cp:=ord(P[result]) and $1F {%11111} shl 6 or ord(P[result+1]) and $3F {%111111};
{ Max possible cp value, $7FF, won't overflow L2. }
if IsCombinings.L0[IsCombinings.L1[IsCombinings.L2[cp shr (5+4)]][cp shr 5 and (1 shl 4-1)]] shr (cp and (1 shl 5-1)) and 1=0 then
exit;
end;
Inc(result,2);
Dec(MaxLookAhead,2);
end
else
begin
cpLen:=2;
break;
end;
{ Three-byte codepoints have the form
%(1110)xxxx (10)xxxxxx (10)xxxxxx
but also minimum value of $800 = %1000 00000000 =
%(1110)0000 (10)100000 (10)000000. }
$E0 {%11100000}..$EF {%11101111}:
if (MaxLookAhead>=3) and
(ord(P[result+1]) and $C0=$80) and
(ord(P[result+2]) and $C0=$80) and
((ord(P[result])>$E0 {%11100000}) or
(ord(P[result+1])>=$A0 {%10100000})) then
begin
if not IncludeCombiningDiacriticalMarks then
exit(3);
if result>0 then
begin
cp:=ord(P[result]) and $F {%1111} shl 12 or ord(P[result+1]) and $3F {%111111} shl 6 or ord(P[result+2]) and $3F {%111111};
{ Max possible cp value, $FFFF, won't overflow L2. }
if IsCombinings.L0[IsCombinings.L1[IsCombinings.L2[cp shr (5+4)]][cp shr 5 and (1 shl 4-1)]] shr (cp and (1 shl 5-1)) and 1=0 then
exit;
end;
Inc(result,3);
Dec(MaxLookAhead,3);
end
else
begin
cpLen:=3;
break;
end;
{ Four-byte codepoints have the form
%(11110)xxx (10)xxxxxx (10)xxxxxx (10)xxxxxx
but also minimum value of $10000 = %1 00000000 00000000 =
%(11110)000 (10)010000 (10)000000 (10)000000
and maximum of $10FFFF = %10000 11111111 11111111 =
%(11110)100 (10)001111 (10)111111 (10)111111. }
$F0 {%11110000}..$F4 {%11110100}:
if (MaxLookAhead>=4) and
(ord(P[result+1]) and $C0=$80) and
(ord(P[result+2]) and $C0=$80) and
(ord(P[result+3]) and $C0=$80) and
(uint16(P[result]) shl 8 or ord(P[result+1])>=$F090 {%11110000 10010000}) and
(uint16(P[result]) shl 8 or ord(P[result+1])<=$F48F {%11110100 10001111}) then
begin
if not IncludeCombiningDiacriticalMarks then
exit(4);
if result>0 then
begin
cp:=ord(P[result]) and $7 {%111} shl 18 or ord(P[result+1]) and $3F {%111111} shl 12 or ord(P[result+2]) and $3F {%111111} shl 6 or ord(P[result+3]) and $3F {%111111};
{ This time, cp can overflow L2, and can have special-cased values U+E0100..U+E01EF. }
if cp<length(IsCombinings.L2) shl (5+4) then
begin
if IsCombinings.L0[IsCombinings.L1[IsCombinings.L2[cp shr (5+4)]][cp shr 5 and (1 shl 4-1)]] shr (cp and (1 shl 5-1)) and 1=0 then
exit;
end
else if not ((cp>=$E0100) and (cp<=$E01EF)) then
exit;
end;
Inc(result,4);
Dec(MaxLookAhead,4);
end
else
begin
cpLen:=4;
break;
end;
else
begin
cpLen:=1;
break;
end;
end;
until false;
{ Handle invalid or incomplete cases, when expected codepoint length is cpLen. }
for iByte:=1 to cpLen-1 do
if (iByte<MaxLookAhead) and
(ord(P[result+iByte]) and $C0 {%11000000}<>$80 {%10000000}) then
begin
if result=0 then result:=-1-iByte;
exit;
end;
if cpLen>MaxLookAhead then
result:=0 { Signal an incomplete codepoint, even if there were complete codepoints before. }
else if result=0 then
result:=-cpLen;
end;
{$ifndef FPC_SYSTEM_HAS_FPC_CHARARRAY_TO_SHORTSTR}
procedure fpc_chararray_to_shortstr(out res : shortstring;const arr: array of AnsiChar; zerobased: boolean = true);[public,alias:'FPC_CHARARRAY_TO_SHORTSTR']; compilerproc;
var
l: ObjpasInt;
index: ObjpasInt;
len: byte;
begin
l:=high(arr)+1;
if l>=ObjpasInt(high(res))+1 then
l:=high(res)
else if l<0 then
l:=0;
if zerobased then
begin
index:=IndexByte(arr[0],l,0);
if index<0 then
len:=l
else
len:=index;
end
else
len:=l;
move(arr[0],res[1],len);
res[0]:=chr(len);
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_CHARARRAY_TO_SHORTSTR}
{$ifndef FPC_SYSTEM_HAS_FPC_SHORTSTR_TO_CHARARRAY}
procedure fpc_shortstr_to_chararray(out res: array of AnsiChar; const src: ShortString); compilerproc;
var
len: ObjpasInt;
begin
len := length(src);
if len > length(res) then
len := length(res);
{$push}{$r-}
{ make sure we don't access AnsiChar 1 if length is 0 (JM) }
if len > 0 then
move(src[1],res[0],len);
fillchar(res[len],length(res)-len,0);
{$pop}
end;
{$endif FPC_SYSTEM_HAS_FPC_SHORTSTR_TO_CHARARRAY}
{$ifndef FPC_SYSTEM_HAS_FPC_PCHAR_LENGTH}
function fpc_pchar_length(p:PAnsiChar):sizeint;[public,alias:'FPC_PCHAR_LENGTH']; compilerproc;
begin
if assigned(p) then
Result:=IndexByte(p^,-1,0)
else
Result:=0;
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_PCHAR_LENGTH}
{$ifndef FPC_SYSTEM_HAS_FPC_PWIDECHAR_LENGTH}
function fpc_pwidechar_length(p:pwidechar):sizeint;[public,alias:'FPC_PWIDECHAR_LENGTH']; compilerproc;
begin
if assigned(p) then
Result:=IndexWord(p^,-1,0)
else
result:=0;
end;
{$endif ndef FPC_SYSTEM_HAS_FPC_PWIDECHAR_LENGTH}
{****************************************************************************
Caller/StackFrame Helpers
****************************************************************************}
{$ifndef FPC_SYSTEM_HAS_GET_FRAME}
{_$error Get_frame must be defined for each processor }
{$endif ndef FPC_SYSTEM_HAS_GET_FRAME}
{$ifndef FPC_SYSTEM_HAS_GET_CALLER_ADDR}
{_$error Get_caller_addr must be defined for each processor }
{$endif ndef FPC_SYSTEM_HAS_GET_CALLER_ADDR}
{$ifndef FPC_SYSTEM_HAS_GET_CALLER_FRAME}
{_$error Get_caller_frame must be defined for each processor }
{$endif ndef FPC_SYSTEM_HAS_GET_CALLER_FRAME}
{****************************************************************************
Math
****************************************************************************}
{****************************************************************************
Software multiplication
****************************************************************************}
{$ifdef FPC_INCLUDE_SOFTWARE_MUL}
{$ifndef FPC_SYSTEM_HAS_MUL_SHORTINT}
function fpc_mul_shortint(f1,f2 : shortint) : shortint;[public,alias: 'FPC_MUL_SHORTINT']; compilerproc;
begin
{ there's no difference between signed and unsigned multiplication,
when the destination size is equal to the source size and overflow
checking is off }
{ byte(f1) * byte(f2) is coded as a call to mul_byte }
fpc_mul_shortint := shortint(byte(f1) * byte(f2));
end;
function fpc_mul_shortint_checkoverflow(f1,f2 : shortint) : shortint;[public,alias: 'FPC_MUL_SHORTINT_CHECKOVERFLOW']; compilerproc;
var
sign : boolean;
q1,q2,q3 : byte;
begin
sign:=false;
if f1 < 0 then
begin
sign := not(sign);
q1 := byte(-f1);
end
else
q1 := f1;
if f2 < 0 then
begin
sign := not(sign);
q2 := byte(-f2);
end
else
q2 := f2;
{ the q1*q2 is coded as call to mul_byte }
{$push}
{$Q+}
q3 := q1 * q2;
{$pop}
if (q1 <> 0) and (q2 <> 0) and
((q1 > q3) or (q2 > q3) or
{ the bit 7 can be only set if we have $80 }
{ and sign is true }
(q3 shr 7 <> 0) and
((q3 <> byte(byte(1) shl 7)) or not(sign))
) then
FPC_Overflow();
if sign then
fpc_mul_shortint_checkoverflow := -q3
else
fpc_mul_shortint_checkoverflow := q3;
end;
{$endif FPC_SYSTEM_HAS_MUL_SHORTINT}
{$ifndef FPC_SYSTEM_HAS_MUL_BYTE}
function fpc_mul_byte(f1,f2 : byte) : byte;[public,alias: 'FPC_MUL_BYTE']; compilerproc;
var
v1,v2,res: byte;
begin
if f1<f2 then
begin
v1:=f1;
v2:=f2;
end
else
begin
v1:=f2;
v2:=f1;
end;
res:=0;
while v1<>0 do
begin
if v1 and 1<>0 then
inc(res,v2);
v2:=v2 shl 1;
v1:=v1 shr 1;
end;
fpc_mul_byte:=res;
end;
function fpc_mul_byte_checkoverflow(f1,f2 : byte) : byte;[public,alias: 'FPC_MUL_BYTE_CHECKOVERFLOW']; compilerproc;
var
_f1, bitpos : byte;
f1overflowed : boolean;
begin
fpc_mul_byte_checkoverflow := 0;
bitpos := 1;
f1overflowed := false;
while f1<>0 do
begin
if (f2 and bitpos) <> 0 then
begin
_f1 := fpc_mul_byte_checkoverflow;
fpc_mul_byte_checkoverflow := fpc_mul_byte_checkoverflow + f1;
{ if one of the operands is greater than the result an
overflow occurs }
if f1overflowed or ((_f1 <> 0) and (f1 <> 0) and
((_f1 > fpc_mul_byte_checkoverflow) or (f1 > fpc_mul_byte_checkoverflow))) then
FPC_Overflow();
end;
{ when bootstrapping, we forget about overflow checking for qword :) }
f1overflowed := f1overflowed or ((f1 and (1 shl 7)) <> 0);
f1 := f1 shl 1;
bitpos := bitpos shl 1;
end;
end;
{$endif FPC_SYSTEM_HAS_MUL_BYTE}
{$ifndef FPC_SYSTEM_HAS_MUL_INTEGER}
function fpc_mul_integer(f1,f2 : integer) : integer;[public,alias: 'FPC_MUL_INTEGER']; compilerproc;
begin
{ there's no difference between signed and unsigned multiplication,
when the destination size is equal to the source size and overflow
checking is off }
{ word(f1)*word(f2) is coded as a call to mulword }
fpc_mul_integer:=integer(word(f1)*word(f2));
end;
function fpc_mul_integer_checkoverflow(f1,f2 : integer) : integer;[public,alias: 'FPC_MUL_INTEGER_CHECKOVERFLOW']; compilerproc;
var
sign : boolean;
q1,q2,q3 : word;
begin
sign:=false;
if f1<0 then
begin
sign:=not(sign);
q1:=word(-f1);
end
else
q1:=f1;
if f2<0 then
begin
sign:=not(sign);
q2:=word(-f2);
end
else
q2:=f2;
{ the q1*q2 is coded as call to mulword }
{$push}
{$Q+}
q3:=q1*q2;
{$pop}
if (q1 <> 0) and (q2 <>0) and
((q1>q3) or (q2>q3) or
{ the bit 63 can be only set if we have $8000 }
{ and sign is true }
(q3 shr 15<>0) and
((q3<>word(word(1) shl 15)) or not(sign))
) then
FPC_Overflow();
if sign then
fpc_mul_integer_checkoverflow:=-q3
else
fpc_mul_integer_checkoverflow:=q3;
end;
{$endif FPC_SYSTEM_HAS_MUL_INTEGER}
{$ifndef FPC_SYSTEM_HAS_MUL_WORD}
function fpc_mul_word(f1,f2 : word) : word;[public,alias: 'FPC_MUL_WORD']; compilerproc;
var
v1,v2,res: word;
begin
if f1<f2 then
begin
v1:=f1;
v2:=f2;
end
else
begin
v1:=f2;
v2:=f1;
end;
res:=0;
while v1<>0 do
begin
if ALUUInt(v1) and 1<>0 then
inc(res,v2);
v2:=v2 shl 1;
v1:=v1 shr 1;
end;
fpc_mul_word:=res;
end;
function fpc_mul_word_checkoverflow(f1,f2 : word) : word;[public,alias: 'FPC_MUL_WORD_CHECKOVERFLOW']; compilerproc;
var
_f1,bitpos : word;
f1overflowed : boolean;
begin
fpc_mul_word_checkoverflow:=0;
bitpos:=1;
f1overflowed:=false;
while f1<>0 do
begin
if (f2 and bitpos)<>0 then
begin
_f1:=fpc_mul_word_checkoverflow;
fpc_mul_word_checkoverflow:=fpc_mul_word_checkoverflow+f1;
{ if one of the operands is greater than the result an
overflow occurs }
if f1overflowed or ((_f1<>0) and (f1<>0) and
((_f1>fpc_mul_word_checkoverflow) or (f1>fpc_mul_word_checkoverflow))) then
FPC_Overflow();
end;
{ when bootstrapping, we forget about overflow checking for qword :) }
f1overflowed:=f1overflowed or ((f1 and (1 shl 15))<>0);
f1:=f1 shl 1;
bitpos:=bitpos shl 1;
end;
end;
{$endif FPC_SYSTEM_HAS_MUL_WORD}
{$ifndef FPC_SYSTEM_HAS_MUL_LONGINT}
function fpc_mul_longint(f1,f2 : longint) : longint;[public,alias: 'FPC_MUL_LONGINT']; compilerproc;
begin
{ there's no difference between signed and unsigned multiplication,
when the destination size is equal to the source size and overflow
checking is off }
{ dword(f1)*dword(f2) is coded as a call to muldword }
fpc_mul_longint:=longint(dword(f1)*dword(f2));
end;
function fpc_mul_longint_checkoverflow(f1,f2 : longint) : longint;[public,alias: 'FPC_MUL_LONGINT_CHECKOVERFLOW']; compilerproc;
var
sign : boolean;
q1,q2,q3 : dword;
begin
sign:=false;
if f1<0 then
begin
sign:=not(sign);
q1:=dword(-f1);
end
else
q1:=f1;
if f2<0 then
begin
sign:=not(sign);
q2:=dword(-f2);
end
else
q2:=f2;
{ the q1*q2 is coded as call to muldword }
{$push}
{$Q+}
q3:=q1*q2;
{$pop}
if (q1 <> 0) and (q2 <>0) and
((q1>q3) or (q2>q3) or
{ the bit 31 can be only set if we have $8000 0000 }
{ and sign is true }
(q3 shr 31<>0) and
((q3<>dword(dword(1) shl 31)) or not(sign))
) then
FPC_Overflow();
if sign then
fpc_mul_longint_checkoverflow:=-q3
else
fpc_mul_longint_checkoverflow:=q3;
end;
{$endif FPC_SYSTEM_HAS_MUL_INTEGER}
{$ifndef FPC_SYSTEM_HAS_MUL_DWORD}
function fpc_mul_dword(f1,f2 : dword) : dword;[public,alias: 'FPC_MUL_DWORD']; compilerproc;
var
v1,v2,res: dword;
begin
if f1<f2 then
begin
v1:=f1;
v2:=f2;
end
else
begin
v1:=f2;
v2:=f1;
end;
res:=0;
while v1<>0 do
begin
if ALUUInt(v1) and 1<>0 then
inc(res,v2);
v2:=v2 shl 1;
v1:=v1 shr 1;
end;
fpc_mul_dword:=res;
end;
function fpc_mul_dword_checkoverflow(f1,f2 : dword) : dword;[public,alias: 'FPC_MUL_DWORD_CHECKOVERFLOW']; compilerproc;
var
_f1,bitpos : dword;
f1overflowed : boolean;
begin
fpc_mul_dword_checkoverflow:=0;
bitpos:=1;
f1overflowed:=false;
while f1<>0 do
begin
if (f2 and bitpos)<>0 then
begin
_f1:=fpc_mul_dword_checkoverflow;
fpc_mul_dword_checkoverflow:=fpc_mul_dword_checkoverflow+f1;
{ if one of the operands is greater than the result an
overflow occurs }
if f1overflowed or ((_f1<>0) and (f1<>0) and
((_f1>fpc_mul_dword_checkoverflow) or (f1>fpc_mul_dword_checkoverflow))) then
FPC_Overflow();
end;
{ when bootstrapping, we forget about overflow checking for qword :) }
f1overflowed:=f1overflowed or ((f1 and (dword(1) shl 31))<>0);
f1:=f1 shl 1;
bitpos:=bitpos shl 1;
end;
end;
{$endif FPC_SYSTEM_HAS_MUL_DWORD}
{$endif FPC_INCLUDE_SOFTWARE_MUL}
{****************************************************************************
Software longint/dword division
****************************************************************************}
{$ifdef FPC_INCLUDE_SOFTWARE_MOD_DIV}
{$ifndef FPC_SYSTEM_HAS_DIV_DWORD}
function fpc_div_dword(n,z : dword) : dword; [public,alias: 'FPC_DIV_DWORD']; compilerproc;
var
shift,lzz,lzn : ObjpasInt;
begin
result:=0;
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
if z=0 then
exit;
lzz:=BsrDWord(z);
lzn:=BsrDWord(n);
{ if the denominator contains less zeros
then the numerator
then d is greater than the n }
if lzn>lzz then
exit;
shift:=lzz-lzn;
n:=n shl shift;
for shift:=shift downto 0 do
begin
if z>=n then
begin
z:=z-n;
result:=result+dword(dword(1) shl shift);
end;
n:=n shr 1;
end;
end;
{$endif FPC_SYSTEM_HAS_DIV_DWORD}
{$ifndef FPC_SYSTEM_HAS_MOD_DWORD}
function fpc_mod_dword(n,z : dword) : dword; [public,alias: 'FPC_MOD_DWORD']; compilerproc;
var
shift,lzz,lzn : ObjpasInt;
begin
result:=0;
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
if z=0 then
exit;
lzz:=BsrDWord(z);
lzn:=BsrDWord(n);
{ if the denominator contains less zeros
then the numerator
then d is greater than the n }
if lzn>lzz then
begin
result:=z;
exit;
end;
shift:=lzz-lzn;
n:=n shl shift;
for shift:=shift downto 0 do
begin
if z>=n then
z:=z-n;
n:=n shr 1;
end;
result:=z;
end;
{$endif FPC_SYSTEM_HAS_MOD_DWORD}
{$ifndef FPC_SYSTEM_HAS_DIV_WORD}
function fpc_div_word(n,z : word) : word; [public,alias: 'FPC_DIV_WORD']; compilerproc;
var
shift,lzz,lzn : Byte;
begin
result:=0;
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
if z=0 then
exit;
lzz:=BsrWord(z);
lzn:=BsrWord(n);
{ if the denominator contains less zeros
then the numerator
then d is greater than the n }
if lzn>lzz then
exit;
shift:=lzz-lzn;
n:=n shl shift;
for shift:=shift downto 0 do
begin
if z>=n then
begin
z:=z-n;
result:=result+word(word(1) shl shift);
end;
n:=n shr 1;
end;
end;
{$endif FPC_SYSTEM_HAS_DIV_WORD}
{$ifndef FPC_SYSTEM_HAS_MOD_WORD}
function fpc_mod_word(n,z : word) : word; [public,alias: 'FPC_MOD_WORD']; compilerproc;
var
shift,lzz,lzn : Byte;
begin
result:=0;
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
if z=0 then
exit;
lzz:=BsrWord(z);
lzn:=BsrWord(n);
{ if the denominator contains less zeros
then the numerator
then d is greater than the n }
if lzn>lzz then
begin
result:=z;
exit;
end;
shift:=lzz-lzn;
n:=n shl shift;
for shift:=shift downto 0 do
begin
if z>=n then
z:=z-n;
n:=n shr 1;
end;
result:=z;
end;
{$endif FPC_SYSTEM_HAS_MOD_WORD}
{$ifndef FPC_SYSTEM_HAS_DIV_BYTE}
function fpc_div_byte(n,z : byte) : byte; [public,alias: 'FPC_DIV_BYTE']; compilerproc;
var
shift,lzz,lzn : Byte;
begin
result:=0;
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
if z=0 then
exit;
lzz:=BsrByte(z);
lzn:=BsrByte(n);
{ if the denominator contains less zeros
then the numerator
then d is greater than the n }
if lzn>lzz then
exit;
shift:=lzz-lzn;
n:=n shl shift;
for shift:=shift downto 0 do
begin
if z>=n then
begin
z:=z-n;
result:=result+byte(byte(1) shl shift);
end;
n:=n shr 1;
end;
end;
{$endif FPC_SYSTEM_HAS_DIV_BYTE}
{$ifndef FPC_SYSTEM_HAS_MOD_BYTE}
function fpc_mod_byte(n,z : byte) : byte; [public,alias: 'FPC_MOD_BYTE']; compilerproc;
var
shift,lzz,lzn : Byte;
begin
result:=0;
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
if z=0 then
exit;
lzz:=BsrByte(z);
lzn:=BsrByte(n);
{ if the denominator contains less zeros
then the numerator
then d is greater than the n }
if lzn>lzz then
begin
result:=z;
exit;
end;
shift:=lzz-lzn;
n:=n shl shift;
for shift:=shift downto 0 do
begin
if z>=n then
z:=z-n;
n:=n shr 1;
end;
result:=z;
end;
{$endif FPC_SYSTEM_HAS_MOD_BYTE}
{$ifndef FPC_SYSTEM_HAS_DIV_LONGINT}
function fpc_div_longint(n,z : longint) : longint; [public,alias: 'FPC_DIV_LONGINT']; compilerproc;
var
sign : boolean;
d1,d2 : dword;
begin
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
sign:=false;
if z<0 then
begin
sign:=not(sign);
d1:=dword(-z);
end
else
d1:=z;
if n<0 then
begin
sign:=not(sign);
d2:=dword(-n);
end
else
d2:=n;
{ the div is coded by the compiler as call to divdword }
if sign then
result:=-(d1 div d2)
else
result:=d1 div d2;
end;
{$endif FPC_SYSTEM_HAS_DIV_LONGINT}
{$ifndef FPC_SYSTEM_HAS_MOD_LONGINT}
function fpc_mod_longint(n,z : longint) : longint; [public,alias: 'FPC_MOD_LONGINT']; compilerproc;
var
signed : boolean;
r,nq,zq : dword;
begin
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
nq:=abs(n);
if z<0 then
begin
zq:=dword(-z);
signed:=true;
end
else
begin
zq:=z;
signed:=false;
end;
r:=zq mod nq;
if signed then
result:=-longint(r)
else
result:=r;
end;
{$endif FPC_SYSTEM_HAS_MOD_LONGINT}
{$ifndef FPC_SYSTEM_HAS_DIV_SMALLINT}
function fpc_div_smallint(n,z : smallint) : smallint; [public,alias: 'FPC_DIV_SMALLINT']; compilerproc;
var
sign : boolean;
w1,w2 : word;
begin
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
sign:=false;
if z<0 then
begin
sign:=not(sign);
w1:=word(-z);
end
else
w1:=z;
if n<0 then
begin
sign:=not(sign);
w2:=word(-n);
end
else
w2:=n;
{ the div is coded by the compiler as call to divdword }
if sign then
result:=-(w1 div w2)
else
result:=w1 div w2;
end;
{$endif FPC_SYSTEM_HAS_DIV_SMALLINT}
{$ifndef FPC_SYSTEM_HAS_MOD_SMALLINT}
function fpc_mod_smallint(n,z : smallint) : smallint; [public,alias: 'FPC_MOD_SMALLINT']; compilerproc;
var
signed : boolean;
r,nq,zq : word;
begin
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
nq:=abs(n);
if z<0 then
begin
zq:=word(-z);
signed:=true;
end
else
begin
zq:=z;
signed:=false;
end;
r:=zq mod nq;
if signed then
result:=-smallint(r)
else
result:=r;
end;
{$endif FPC_SYSTEM_HAS_MOD_SMALLINT}
{$ifndef FPC_SYSTEM_HAS_DIV_SHORTINT}
function fpc_div_shortint(n,z : shortint) : shortint; [public,alias: 'FPC_DIV_SHORTINT']; compilerproc;
var
sign : boolean;
b1,b2 : byte;
begin
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
sign:=false;
if z<0 then
begin
sign:=not(sign);
b1:=byte(-z);
end
else
b1:=z;
if n<0 then
begin
sign:=not(sign);
b2:=byte(-n);
end
else
b2:=n;
{ the div is coded by the compiler as call to divdword }
if sign then
result:=-(b1 div b2)
else
result:=b1 div b2;
end;
{$endif FPC_SYSTEM_HAS_DIV_SHORTINT}
{$ifndef FPC_SYSTEM_HAS_MOD_SHORTINT}
function fpc_mod_shortint(n,z : shortint) : shortint; [public,alias: 'FPC_MOD_SHORTINT']; compilerproc;
var
signed : boolean;
r,nq,zq : byte;
begin
if n=0 then
HandleErrorAddrFrameInd(200,get_pc_addr,get_frame);
nq:=abs(n);
if z<0 then
begin
zq:=byte(-z);
signed:=true;
end
else
begin
zq:=z;
signed:=false;
end;
r:=zq mod nq;
if signed then
result:=-shortint(r)
else
result:=r;
end;
{$endif FPC_SYSTEM_HAS_MOD_SHORTINT}
{$endif FPC_INCLUDE_SOFTWARE_MOD_DIV}
{$ifndef FPC_SYSTEM_HAS_UMUL64X64_128}
{$push} {$q-,r-}
function UMul64x64_128(a,b: uint64; out rHi: uint64): uint64;
var
albl, albh, ahbl: uint64;
begin
albl := uint64(uint32(a)) * uint32(b);
albh := uint64(uint32(a)) * (b shr 32);
ahbl := a shr 32 * uint32(b);
result := albl + albh shl 32 + ahbl shl 32;
rHi := a shr 32 * (b shr 32) + albh shr 32 + ahbl shr 32 + (albl shr 32 + uint32(albh) + uint32(ahbl)) shr 32;
end;
{$pop}
{$endif FPC_SYSTEM_HAS_UMUL64X64_128}
{****************************************************************************}
{$if defined(CPUINT8)}
{$ifndef FPC_SYSTEM_HAS_ABS_SHORTINT}
function abs(l:shortint):shortint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
if l<0 then
abs:=-l
else
abs:=l;
end;
{$endif not FPC_SYSTEM_HAS_ABS_SMALLINT}
{$endif CPUINT8}
{$if defined(CPUINT16) or defined(CPUINT8)}
{$ifndef FPC_SYSTEM_HAS_ABS_SMALLINT}
function abs(l:smallint):smallint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
if l<0 then
abs:=-l
else
abs:=l;
end;
{$endif not FPC_SYSTEM_HAS_ABS_SMALLINT}
{$endif CPUINT16 or CPUINT8}
{$ifndef FPC_SYSTEM_HAS_ABS_LONGINT}
{ This is only needed to bootstrap on SPARC targets
(MIPS and m68k too, but they have no releases, so bootstrapping is not an issue) }
function abs(l:longint):longint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
if l<0 then
abs:=-l
else
abs:=l;
end;
{$endif not FPC_SYSTEM_HAS_ABS_LONGINT}
{$if defined(CPUINT8)}
{$ifndef FPC_SYSTEM_HAS_ODD_SHORTINT}
function odd(l:shortint):Boolean;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
odd:=boolean(l and 1);
end;
{$endif ndef FPC_SYSTEM_HAS_ODD_SHORTINT}
{$ifndef FPC_SYSTEM_HAS_ODD_BYTE}
function odd(l:byte):Boolean;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
odd:=boolean(l and 1);
end;
{$endif ndef FPC_SYSTEM_HAS_ODD_BYTE}
{$endif CPUINT8}
{$if defined(CPUINT16) or defined(CPUINT8)}
{$ifndef FPC_SYSTEM_HAS_ODD_SMALLINT}
function odd(l:smallint):Boolean;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
odd:=boolean(l and 1);
end;
{$endif ndef FPC_SYSTEM_HAS_ODD_SMALLINT}
{$ifndef FPC_SYSTEM_HAS_ODD_WORD}
function odd(l:word):Boolean;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
odd:=boolean(l and 1);
end;
{$endif ndef FPC_SYSTEM_HAS_ODD_WORD}
{$endif CPUINT16 or CPUINT8}
{$ifndef FPC_SYSTEM_HAS_ODD_LONGINT}
function odd(l:longint):boolean;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
odd:=boolean(l and 1);
end;
{$endif ndef FPC_SYSTEM_HAS_ODD_LONGINT}
{$ifndef FPC_SYSTEM_HAS_ODD_LONGWORD}
function odd(l:longword):boolean;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
odd:=boolean(l and 1);
end;
{$endif ndef FPC_SYSTEM_HAS_ODD_LONGWORD}
{$ifndef FPC_SYSTEM_HAS_ODD_INT64}
function odd(l:int64):boolean;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
odd:=boolean(longint(l) and 1);
end;
{$endif ndef FPC_SYSTEM_HAS_ODD_INT64}
{$ifndef FPC_SYSTEM_HAS_ODD_QWORD}
function odd(l:qword):boolean;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
odd:=boolean(longint(l) and 1);
end;
{$endif ndef FPC_SYSTEM_HAS_ODD_QWORD}
{$if defined(CPUINT8)}
{$ifndef FPC_SYSTEM_HAS_SQR_SHORTINT}
function sqr(l:shortint):shortint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
sqr:=l*l;
end;
{$endif ndef FPC_SYSTEM_HAS_SQR_SHORTINT}
{$endif CPUINT8}
{$if defined(CPUINT16) or defined(CPUINT8)}
{$ifndef FPC_SYSTEM_HAS_SQR_SMALLINT}
function sqr(l:smallint):smallint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
sqr:=l*l;
end;
{$endif ndef FPC_SYSTEM_HAS_SQR_SMALLINT}
{$endif CPUINT16 or CPUINT8}
{$ifndef FPC_SYSTEM_HAS_SQR_LONGINT}
function sqr(l:longint):longint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
sqr:=l*l;
end;
{$endif ndef FPC_SYSTEM_HAS_SQR_LONGINT}
{$ifndef FPC_SYSTEM_HAS_ABS_INT64}
function abs(l: Int64): Int64;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
if l < 0 then
abs := -l
else
abs := l;
end;
{$endif ndef FPC_SYSTEM_HAS_ABS_INT64}
{$ifndef FPC_SYSTEM_HAS_SQR_INT64}
function sqr(l: Int64): Int64;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
sqr := l*l;
end;
{$endif ndef FPC_SYSTEM_HAS_SQR_INT64}
{$ifndef FPC_SYSTEM_HAS_SQR_QWORD}
function sqr(l: QWord): QWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
sqr := l*l;
end;
{$endif ndef FPC_SYSTEM_HAS_SQR_INT64}
{$ifdef CPU16}
{$ifndef FPC_SYSTEM_HAS_DECLOCKED_SMALLINT}
function declocked(var l:smallint):boolean;
begin
Dec(l);
declocked:=(l=0);
end;
{$endif FPC_SYSTEM_HAS_DECLOCKED_SMALLINT}
{$endif CPU16}
{$ifndef FPC_SYSTEM_HAS_DECLOCKED_LONGINT}
function declocked(var l:longint):boolean;
begin
Dec(l);
declocked:=(l=0);
end;
{$endif FPC_SYSTEM_HAS_DECLOCKED_LONGINT}
{$ifndef FPC_SYSTEM_HAS_DECLOCKED_INT64}
function declocked(var l:int64):boolean;
begin
Dec(l);
declocked:=(l=0);
end;
{$endif FPC_SYSTEM_HAS_DECLOCKED_INT64}
{$ifdef CPU16}
{$ifndef FPC_SYSTEM_HAS_INCLOCKED_SMALLINT}
procedure inclocked(var l:smallint);
begin
Inc(l);
end;
{$endif FPC_SYSTEM_HAS_INCLOCKED_SMALLINT}
{$endif CPU16}
{$ifndef FPC_SYSTEM_HAS_INCLOCKED_LONGINT}
procedure inclocked(var l:longint);
begin
Inc(l);
end;
{$endif FPC_SYSTEM_HAS_INCLOCKED_LONGINT}
{$ifndef FPC_SYSTEM_HAS_INCLOCKED_INT64}
procedure inclocked(var l:int64);
begin
Inc(l);
end;
{$endif FPC_SYSTEM_HAS_INCLOCKED_INT64}
{$ifndef FPC_SYSTEM_HAS_SPTR}
{_$error Sptr must be defined for each processor }
{$endif ndef FPC_SYSTEM_HAS_SPTR}
{****************************************************************************
Str()
****************************************************************************}
{$ifndef FPC_SYSTEM_HAS_INT_STR_LONGINT}
procedure int_str(l:longint;out s:shortstring);
var
m,m1 : longword;
pcstart,
pc2start,
pc,pc2 : PAnsiChar;
hs : string[32];
overflow : longint;
begin
pc2start:=@s[1];
pc2:=pc2start;
if (l<0) then
begin
pc2^:='-';
inc(pc2);
m:=longword(-l);
end
else
m:=longword(l);
pcstart:=PAnsiChar(@hs[0]);
pc:=pcstart;
repeat
m1:=m div 10;
inc(pc);
pc^:=AnsiChar(m-(m1*10)+byte('0'));
m:=m1;
until m=0;
overflow:=(pc-pcstart)+(pc2-pc2start)-high(s);
if overflow>0 then
inc(pcstart,overflow);
while (pc>pcstart) do
begin
pc2^:=pc^;
inc(pc2);
dec(pc);
end;
s[0]:=AnsiChar(pc2-pc2start);
end;
{$endif ndef FPC_SYSTEM_HAS_INT_STR_LONGINT}
{$ifndef FPC_SYSTEM_HAS_INT_STR_LONGWORD}
procedure int_str_unsigned(l:longword;out s:shortstring);
var
m1 : longword;
pcstart,
pc2start,
pc,pc2 : PAnsiChar;
hs : string[32];
overflow : longint;
begin
pc2start:=@s[1];
pc2:=pc2start;
pcstart:=PAnsiChar(@hs[0]);
pc:=pcstart;
repeat
inc(pc);
m1:=l div 10;
pc^:=AnsiChar(l-(m1*10)+byte('0'));
l:=m1;
until l=0;
overflow:=(pc-pcstart)-high(s);
if overflow>0 then
inc(pcstart,overflow);
while (pc>pcstart) do
begin
pc2^:=pc^;
inc(pc2);
dec(pc);
end;
s[0]:=AnsiChar(pc2-pc2start);
end;
{$endif ndef FPC_SYSTEM_HAS_INT_STR_LONGWORD}
{$ifndef FPC_SYSTEM_HAS_INT_STR_INT64}
procedure int_str(l:int64;out s:shortstring);
{$ifdef EXCLUDE_COMPLEX_PROCS}
begin
runerror(217);
end;
{$else EXCLUDE_COMPLEX_PROCS}
var
m,m1 : qword;
pcstart,
pc2start,
pc,pc2 : PAnsiChar;
hs : string[32];
overflow : longint;
begin
pc2start:=@s[1];
pc2:=pc2start;
if (l<0) then
begin
pc2^:='-';
inc(pc2);
m:=qword(-l);
end
else
m:=qword(l);
pcstart:=PAnsiChar(@hs[0]);
pc:=pcstart;
repeat
m1:=m div 10;
inc(pc);
pc^:=AnsiChar(m-(m1*10)+byte('0'));
m:=m1;
until m=0;
overflow:=(pc-pcstart)+(pc2-pc2start)-high(s);
if overflow>0 then
inc(pcstart,overflow);
while (pc>pcstart) do
begin
pc2^:=pc^;
inc(pc2);
dec(pc);
end;
s[0]:=AnsiChar(pc2-pc2start);
end;
{$endif EXCLUDE_COMPLEX_PROCS}
{$endif ndef FPC_SYSTEM_HAS_INT_STR_INT64}
{$ifndef FPC_SYSTEM_HAS_INT_STR_QWORD}
procedure int_str_unsigned(l:qword;out s:shortstring);
{$ifdef EXCLUDE_COMPLEX_PROCS}
begin
runerror(217);
end;
{$else EXCLUDE_COMPLEX_PROCS}
var
m1 : qword;
pcstart,
pc2start,
pc,pc2 : PAnsiChar;
hs : string[64];
overflow : longint;
begin
pc2start:=@s[1];
pc2:=pc2start;
pcstart:=PAnsiChar(@hs[0]);
pc:=pcstart;
repeat
inc(pc);
m1:=l div 10;
pc^:=AnsiChar(l-(m1*10)+byte('0'));
l:=m1;
until l=0;
overflow:=(pc-pcstart)-high(s);
if overflow>0 then
inc(pcstart,overflow);
while (pc>pcstart) do
begin
pc2^:=pc^;
inc(pc2);
dec(pc);
end;
s[0]:=AnsiChar(pc2-pc2start);
end;
{$endif EXCLUDE_COMPLEX_PROCS}
{$endif ndef FPC_SYSTEM_HAS_INT_STR_QWORD}
{$ifndef FPUNONE}
{$ifndef FPC_SYSTEM_HAS_SYSRESETFPU}
procedure SysResetFpu;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
softfloat_exception_flags:=[];
{$if declared(DefaultFPUControlWord)}
SetNativeFPUControlWord(DefaultFPUControlWord);
{$endif}
end;
{$endif FPC_SYSTEM_HAS_SYSRESETFPU}
{$ifndef FPC_SYSTEM_HAS_SYSINITFPU}
procedure SysInitFpu;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
softfloat_exception_mask:=[float_flag_underflow,float_flag_inexact,float_flag_denormal];
softfloat_exception_flags:=[];
end;
{$endif FPC_SYSTEM_HAS_SYSINITFPU}
{$endif}
{$ifndef FPC_SYSTEM_HAS_FPC_CPUINIT}
procedure fpc_cpuinit;
begin
{$ifndef FPUNONE}
{$ifdef FPC_HAS_FEATURE_DYNLIBS}
if not IsLibrary then
{$endif}
SysInitFPU;
{$if declared(DefaultFPUControlWord)}
DefaultFPUControlWord:=GetNativeFPUControlWord;
{$endif}
SysResetFPU;
{$endif}
end;
{$endif}
{$ifndef FPC_SYSTEM_HAS_SWAPENDIAN}
function SwapEndian(const AValue: SmallInt): SmallInt;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{ the extra Word type cast is necessary because the "AValue shr 8" }
{ is turned into "longint(AValue) shr 8", so if AValue < 0 then }
{ the sign bits from the upper 16 bits are shifted in rather than }
{ zeroes. }
Result := SmallInt(((Word(AValue) shr 8) or (Word(AValue) shl 8)) and $ffff);
end;
{$ifndef cpujvm}
function SwapEndian(const AValue: Word): Word;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result := ((AValue shr 8) or (AValue shl 8)) and $ffff;
end;
{$endif}
function SwapEndian(const AValue: LongInt): LongInt;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result := ((AValue shl 8) and $FF00FF00) or ((AValue shr 8) and $00FF00FF);
Result := (Result shl 16) or (Result shr 16);
end;
{$ifndef cpujvm}
function SwapEndian(const AValue: DWord): DWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result := ((AValue shl 8) and $FF00FF00) or ((AValue shr 8) and $00FF00FF);
Result := (Result shl 16) or (Result shr 16);
end;
{$endif}
function SwapEndian(const AValue: Int64): Int64;
begin
Result := ((AValue shl 8) and $FF00FF00FF00FF00) or
((AValue shr 8) and $00FF00FF00FF00FF);
Result := ((Result shl 16) and $FFFF0000FFFF0000) or
((Result shr 16) and $0000FFFF0000FFFF);
Result := (Result shl 32) or ((Result shr 32));
end;
{$ifndef cpujvm}
function SwapEndian(const AValue: QWord): QWord;
begin
Result := ((AValue shl 8) and $FF00FF00FF00FF00) or
((AValue shr 8) and $00FF00FF00FF00FF);
Result := ((Result shl 16) and $FFFF0000FFFF0000) or
((Result shr 16) and $0000FFFF0000FFFF);
Result := (Result shl 32) or ((Result shr 32));
end;
{$endif}
{$endif FPC_SYSTEM_HAS_SWAPENDIAN}
function BEtoN(const AValue: SmallInt): SmallInt;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function BEtoN(const AValue: Word): Word;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function BEtoN(const AValue: LongInt): LongInt;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function BEtoN(const AValue: DWord): DWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function BEtoN(const AValue: Int64): Int64;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function BEtoN(const AValue: QWord): QWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function LEtoN(const AValue: SmallInt): SmallInt;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function LEtoN(const AValue: Word): Word;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function LEtoN(const AValue: LongInt): LongInt;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function LEtoN(const AValue: DWord): DWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function LEtoN(const AValue: Int64): Int64;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function LEtoN(const AValue: QWord): QWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function NtoBE(const AValue: SmallInt): SmallInt;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function NtoBE(const AValue: Word): Word;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function NtoBE(const AValue: LongInt): LongInt;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function NtoBE(const AValue: DWord): DWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function NtoBE(const AValue: Int64): Int64;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function NtoBE(const AValue: QWord): QWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_BIG}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function NtoLE(const AValue: SmallInt): SmallInt;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function NtoLE(const AValue: Word): Word;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function NtoLE(const AValue: LongInt): LongInt;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function NtoLE(const AValue: DWord): DWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
function NtoLE(const AValue: Int64): Int64;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$ifndef cpujvm}
function NtoLE(const AValue: QWord): QWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
{$IFDEF ENDIAN_LITTLE}
Result := AValue;
{$ELSE}
Result := SwapEndian(AValue);
{$ENDIF}
end;
{$endif not cpujvm}
{$ifndef FPC_SYSTEM_HAS_MEM_BARRIER}
procedure ReadBarrier;
begin
end;
procedure ReadDependencyBarrier;
begin
end;
procedure ReadWriteBarrier;
begin
end;
procedure WriteBarrier;
begin
end;
{$endif FPC_SYSTEM_HAS_MEM_BARRIER}
{$ifndef FPC_HAS_INTERNAL_ROX_BYTE}
{$ifndef FPC_SYSTEM_HAS_ROX_BYTE}
function RorByte(Const AValue : Byte): Byte;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shr 1) or (AValue shl 7);
end;
function RorByte(Const AValue : Byte;const Dist : Byte): Byte;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shr (Dist and 7)) or (AValue shl (8-(Dist and 7)));
end;
function RolByte(Const AValue : Byte): Byte;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shl 1) or (AValue shr 7);
end;
function RolByte(Const AValue : Byte;const Dist : Byte): Byte;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shl (Dist and 7)) or (AValue shr (8-(Dist and 7)));
end;
{$endif FPC_SYSTEM_HAS_ROX_BYTE}
{$endif FPC_HAS_INTERNAL_ROX_BYTE}
{$ifndef FPC_HAS_INTERNAL_ROX_WORD}
{$ifndef FPC_SYSTEM_HAS_ROX_WORD}
function RorWord(Const AValue : Word): Word;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shr 1) or (AValue shl 15);
end;
function RorWord(Const AValue : Word;const Dist : Byte): Word;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shr (Dist and 15)) or (AValue shl (16-(Dist and 15)));
end;
function RolWord(Const AValue : Word): Word;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shl 1) or (AValue shr 15);
end;
function RolWord(Const AValue : Word;const Dist : Byte): Word;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shl (Dist and 15)) or (AValue shr (16-(Dist and 15)));
end;
{$endif FPC_SYSTEM_HAS_ROX_WORD}
{$endif FPC_HAS_INTERNAL_ROX_WORD}
{$ifndef FPC_HAS_INTERNAL_ROX_DWORD}
{$ifndef FPC_SYSTEM_HAS_ROX_DWORD}
function RorDWord(Const AValue : DWord): DWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shr 1) or (AValue shl 31);
end;
function RorDWord(Const AValue : DWord;const Dist : Byte): DWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shr (Dist and 31)) or (AValue shl (32-(Dist and 31)));
end;
function RolDWord(Const AValue : DWord): DWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shl 1) or (AValue shr 31);
end;
function RolDWord(Const AValue : DWord;const Dist : Byte): DWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shl (Dist and 31)) or (AValue shr (32-(Dist and 31)));
end;
{$endif FPC_SYSTEM_HAS_ROX_DWORD}
{$endif FPC_HAS_INTERNAL_ROX_DWORD}
{$ifndef FPC_HAS_INTERNAL_ROX_QWORD}
{$ifndef FPC_SYSTEM_HAS_ROX_QWORD}
function RorQWord(Const AValue : QWord): QWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shr 1) or (AValue shl 63);
end;
function RorQWord(Const AValue : QWord;const Dist : Byte): QWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shr (Dist and 63)) or (AValue shl (64-(Dist and 63)));
end;
function RolQWord(Const AValue : QWord): QWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shl 1) or (AValue shr 63);
end;
function RolQWord(Const AValue : QWord;const Dist : Byte): QWord;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Result:=(AValue shl (Dist and 63)) or (AValue shr (64-(Dist and 63)));
end;
{$endif FPC_SYSTEM_HAS_ROX_QWORD}
{$endif FPC_HAS_INTERNAL_ROX_QWORD}
{$ifndef FPC_HAS_INTERNAL_ROX_ASSIGN_QWORD}
{$ifndef FPC_SYSTEM_HAS_ROX_ASSIGN_QWORD}
procedure fpc_ror_assign_int64(var AValue : int64;const Dist : Byte); [Public,Alias:'FPC_ROR_ASSIGN_INT64']; compilerproc;
begin
AValue:=(AValue shr (Dist and 63)) or (AValue shl (64-(Dist and 63)));
end;
procedure fpc_ror_assign_qword(var AValue : QWord;const Dist : Byte); [Public,Alias:'FPC_ROR_ASSIGN_QWORD']; compilerproc;
begin
AValue:=(AValue shr (Dist and 63)) or (AValue shl (64-(Dist and 63)));
end;
procedure fpc_rol_assign_int64(var AValue : int64;const Dist : Byte); [Public,Alias:'FPC_ROL_ASSIGN_INT64']; compilerproc;
begin
AValue:=(AValue shl (Dist and 63)) or (AValue shr (64-(Dist and 63)));
end;
procedure fpc_rol_assign_qword(var AValue : QWord;const Dist : Byte); [Public,Alias:'FPC_ROL_ASSIGN_QWORD']; compilerproc;
begin
AValue:=(AValue shl (Dist and 63)) or (AValue shr (64-(Dist and 63)));
end;
{$endif FPC_SYSTEM_HAS_ROX_ASSIGN_QWORD}
{$endif FPC_HAS_INTERNAL_ROX_ASSIGN_QWORD}
{$ifndef FPC_HAS_INTERNAL_SAR_BYTE}
{$ifndef FPC_SYSTEM_HAS_SAR_BYTE}
function SarShortint(Const AValue : Shortint;const Shift : Byte): Shortint;
begin
Result:=shortint(byte(byte(byte(AValue) shr (Shift and 7)) or (byte(shortint(byte(0-byte(byte(AValue) shr 7)) and byte(shortint(0-(ord((Shift and 7)<>0){ and 1}))))) shl (8-(Shift and 7)))));
end;
{$endif FPC_HAS_INTERNAL_SAR_BYTE}
{$endif FPC_SYSTEM_HAS_SAR_BYTE}
{$ifndef FPC_HAS_INTERNAL_SAR_WORD}
{$ifndef FPC_SYSTEM_HAS_SAR_WORD}
function SarSmallint(Const AValue : Smallint;const Shift : Byte): Smallint;
begin
Result:=smallint(word(word(word(AValue) shr (Shift and 15)) or (word(smallint(word(0-word(word(AValue) shr 15)) and word(smallint(0-(ord((Shift and 15)<>0){ and 1}))))) shl (16-(Shift and 15)))));
end;
{$endif FPC_HAS_INTERNAL_SAR_WORD}
{$endif FPC_SYSTEM_HAS_SAR_WORD}
{$ifndef FPC_HAS_INTERNAL_SAR_DWORD}
{$ifndef FPC_SYSTEM_HAS_SAR_DWORD}
function SarLongint(Const AValue : Longint;const Shift : Byte): Longint;
begin
Result:=longint(dword(dword(dword(AValue) shr (Shift and 31)) or (dword(longint(dword(0-dword(dword(AValue) shr 31)) and dword(longint(0-(ord((Shift and 31)<>0){ and 1}))))) shl (32-(Shift and 31)))));
end;
{$endif FPC_HAS_INTERNAL_SAR_DWORD}
{$endif FPC_SYSTEM_HAS_SAR_DWORD}
{$ifndef FPC_HAS_INTERNAL_SAR_QWORD}
{$ifndef FPC_SYSTEM_HAS_SAR_QWORD}
function fpc_SarInt64(Const AValue : Int64;const Shift : Byte): Int64; [Public,Alias:'FPC_SARINT64']; compilerproc;
begin
Result:=int64(qword(qword(qword(AValue) shr (Shift and 63)) or (qword(int64(qword(0-qword(qword(AValue) shr 63)) and qword(int64(0-(ord((Shift and 63)<>0){ and 1}))))) shl (64-(Shift and 63)))));
end;
{$endif FPC_HAS_INTERNAL_SAR_QWORD}
{$endif FPC_SYSTEM_HAS_SAR_QWORD}
{$ifndef FPC_HAS_INTERNAL_SAR_ASSIGN_QWORD}
{$ifndef FPC_SYSTEM_HAS_SAR_ASSIGN_QWORD}
procedure fpc_sar_assign_int64(var AValue : Int64;const Shift : Byte); [Public,Alias:'FPC_SAR_ASSIGN_INT64']; compilerproc;
begin
AValue:=int64(qword(qword(qword(AValue) shr (Shift and 63)) or (qword(int64(qword(0-qword(qword(AValue) shr 63)) and qword(int64(0-(ord((Shift and 63)<>0){ and 1}))))) shl (64-(Shift and 63)))));
end;
procedure fpc_sar_assign_qword(var AValue : QWord;const Shift : Byte); [Public,Alias:'FPC_SAR_ASSIGN_QWORD']; compilerproc;
begin
AValue:=qword(qword(qword(qword(AValue) shr (Shift and 63)) or (qword(int64(qword(0-qword(qword(AValue) shr 63)) and qword(int64(0-(ord((Shift and 63)<>0){ and 1}))))) shl (64-(Shift and 63)))));
end;
{$endif FPC_HAS_INTERNAL_SAR_ASSIGN_QWORD}
{$endif FPC_SYSTEM_HAS_SAR_ASSIGN_QWORD}
{$ifndef FPC_HAS_INTERNAL_BSF_BYTE}
{$ifndef FPC_SYSTEM_HAS_BSF_BYTE}
function BsfByte(Const AValue: Byte): Byte;
const bsf8bit: array [Byte] of Byte = (
$ff,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
6,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
7,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
6,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
);
begin
result:=bsf8bit[AValue];
end;
{$endif}
{$endif}
{$ifndef FPC_HAS_INTERNAL_BSR_BYTE}
{$ifndef FPC_SYSTEM_HAS_BSR_BYTE}
function BsrByte(Const AValue: Byte): Byte;
const bsr8bit: array [Byte] of Byte = (
$ff,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
);
begin
result:=bsr8bit[AValue];
end;
{$endif}
{$endif}
{$ifndef FPC_SYSTEM_HAS_BSF_WORD}
{$ifndef FPC_HAS_INTERNAL_BSF_WORD}
function BsfWord(Const AValue: Word): {$ifdef CPU16}byte{$else}cardinal{$endif};
begin
result:=ord(lo(AValue)=0)*8;
result:=result or BsfByte(byte(AValue shr result));
end;
{$endif}
{$endif}
{$ifndef FPC_SYSTEM_HAS_BSR_WORD}
{$ifndef FPC_HAS_INTERNAL_BSR_WORD}
function BsrWord(Const AValue: Word): {$ifdef CPU16}byte{$else}cardinal{$endif};
begin
result:=ord(AValue>255)*8;
result:=result or BsrByte(byte(AValue shr result));
end;
{$endif}
{$endif}
{$ifndef FPC_HAS_INTERNAL_BSF_DWORD}
{$ifndef FPC_SYSTEM_HAS_BSF_DWORD}
function BsfDWord(Const AValue : DWord): {$ifdef CPU16}byte{$else}cardinal{$endif};
var
tmp: DWord;
begin
result:=ord(lo(AValue)=0)*16;
tmp:=AValue shr result;
result:=result or (ord((tmp and $FF)=0)*8);
tmp:=tmp shr (result and 8);
result:=result or BsfByte(byte(tmp));
end;
{$endif}
{$endif}
{$ifndef FPC_HAS_INTERNAL_BSR_DWORD}
{$ifndef FPC_SYSTEM_HAS_BSR_DWORD}
function BsrDWord(Const AValue : DWord): {$ifdef CPU16}byte{$else}cardinal{$endif};
var
tmp: DWord;
begin
result:=ord(AValue>$FFFF)*16;
tmp:=AValue shr result;
result:=result or (ord(tmp>$FF)*8);
tmp:=tmp shr (result and 8);
result:=result or BsrByte(byte(tmp));
end;
{$endif}
{$endif}
{$ifndef FPC_HAS_INTERNAL_BSF_QWORD}
{$ifndef FPC_SYSTEM_HAS_BSF_QWORD}
function BsfQWord(Const AValue : QWord): {$ifdef CPU16}byte{$else}cardinal{$endif};
var
tmp: DWord;
begin
result:=0;
tmp:=lo(AValue);
if (tmp=0) then
begin
tmp:=hi(AValue);
result:=32;
end;
result:=result or BsfDword(tmp);
end;
{$endif}
{$endif}
{$ifndef FPC_HAS_INTERNAL_BSR_QWORD}
{$ifndef FPC_SYSTEM_HAS_BSR_QWORD}
function BsrQWord(Const AValue : QWord): {$ifdef CPU16}byte{$else}cardinal{$endif};
var
tmp: DWord;
begin
result:=32;
tmp:=hi(AValue);
if (tmp=0) then
begin
tmp:=lo(AValue);
result:=0;
end;
result:=result or BsrDword(tmp);
end;
{$endif}
{$endif}
const
PopCntData : array[0..15] of byte = (0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4);
function fpc_PopCnt_byte(AValue : Byte): Byte;[Public,Alias:'FPC_POPCNT_BYTE'];compilerproc;
begin
Result:=PopCntData[AValue and $f]+PopCntData[(AValue shr 4) and $f];
end;
function fpc_PopCnt_word(AValue : Word): Word;[Public,Alias:'FPC_POPCNT_WORD'];compilerproc;
var
i : SizeInt;
begin
Result:=0;
for i:=0 to 3 do
begin
inc(Result,PopCntData[AValue and $f]);
AValue:=AValue shr 4;
end;
end;
function fpc_PopCnt_dword(AValue : DWord): DWord;[Public,Alias:'FPC_POPCNT_DWORD'];compilerproc;
var
i : SizeInt;
begin
Result:=0;
for i:=0 to 7 do
begin
inc(Result,PopCntData[AValue and $f]);
AValue:=AValue shr 4;
end;
end;
{$ifndef FPC_SYSTEM_HAS_POPCNT_QWORD}
function fpc_PopCnt_qword(AValue : QWord): QWord;[Public,Alias:'FPC_POPCNT_QWORD'];compilerproc;
begin
Result:=PopCnt(lo(AValue))+PopCnt(hi(AValue))
end;
{$endif}
{$if not defined(VER3_2) and not defined(CPUJVM)}
{$push}
{$R-,Q-}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_INC_8}
function fpc_atomic_inc_8(var Target: shortint): shortint;compilerproc;
begin
{$if defined(FPC_SYSTEM_HAS_ATOMIC_ADD_8)}
Result := AtomicIncrement(Target, 1);
{$elseif defined(FPC_SYSTEM_HAS_ATOMIC_SUB_8)}
Result := AtomicDecrement(Target, -1);
{$else}
repeat
Result := Target + 1;
until shortint(Result - 1) = AtomicCmpExchange(Target, Result, Result - 1);
{$endif}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_INC_8}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_INC_16}
function fpc_atomic_inc_16(var Target: smallint): smallint;compilerproc;
begin
{$if defined(FPC_SYSTEM_HAS_ATOMIC_ADD_16)}
Result := AtomicIncrement(Target, 1);
{$elseif defined(FPC_SYSTEM_HAS_ATOMIC_SUB_16)}
Result := AtomicDecrement(Target, -1);
{$else}
repeat
Result := Target + 1;
until smallint(Result - 1) = AtomicCmpExchange(Target, Result, Result - 1);
{$endif}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_INC_16}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_INC_32}
function fpc_atomic_inc_32(var Target: longint): longint;compilerproc;
begin
{$if defined(FPC_SYSTEM_HAS_ATOMIC_ADD_32)}
Result := AtomicIncrement(Target, 1);
{$elseif defined(FPC_SYSTEM_HAS_ATOMIC_SUB_32)}
Result := AtomicDecrement(Target, -1);
{$else}
repeat
Result := Target + 1;
until longint(Result - 1) = AtomicCmpExchange(Target, Result, Result - 1);
{$endif}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_INC_32}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_INC_64}
function fpc_atomic_inc_64(var Target: int64): int64;compilerproc;
begin
{$if defined(FPC_SYSTEM_HAS_ATOMIC_ADD_64)}
Result := AtomicIncrement(Target, 1);
{$elseif defined(FPC_SYSTEM_HAS_ATOMIC_SUB_64)}
Result := AtomicDecrement(Target, -1);
{$else}
repeat
Result := Target + 1;
until int64(Result - 1) = AtomicCmpExchange(Target, Result, Result - 1);
{$endif}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_INC_64}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_DEC_8}
function fpc_atomic_dec_8(var Target: shortint): shortint;compilerproc;
begin
{$if defined(FPC_SYSTEM_HAS_ATOMIC_SUB_8)}
Result := AtomicDecrement(Target, 1);
{$elseif defined(FPC_SYSTEM_HAS_ATOMIC_ADD_8)}
Result := AtomicIncrement(Target, -1);
{$else}
repeat
Result := Target - 1;
until shortint(Result + 1) = AtomicCmpExchange(Target, Result, Result + 1);
{$endif}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_DEC_8}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_DEC_16}
function fpc_atomic_dec_16(var Target: smallint): smallint;compilerproc;
begin
{$if defined(FPC_SYSTEM_HAS_ATOMIC_SUB_16)}
Result := AtomicDecrement(Target, 1);
{$elseif defined(FPC_SYSTEM_HAS_ATOMIC_ADD_16)}
Result := AtomicIncrement(Target, -1);
{$else}
repeat
Result := Target - 1;
until smallint(Result + 1) = AtomicCmpExchange(Target, Result, Result + 1);
{$endif}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_DEC_16}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_DEC_32}
function fpc_atomic_dec_32(var Target: longint): longint;compilerproc;
begin
{$if defined(FPC_SYSTEM_HAS_ATOMIC_SUB_32)}
Result := AtomicDecrement(Target, 1);
{$elseif defined(FPC_SYSTEM_HAS_ATOMIC_ADD_32)}
Result := AtomicIncrement(Target, -1);
{$else}
repeat
Result := Target - 1;
until longint(Result + 1) = AtomicCmpExchange(Target, Result, Result + 1);
{$endif}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_DEC_32}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_DEC_64}
function fpc_atomic_dec_64(var Target: int64): int64;compilerproc;
begin
{$if defined(FPC_SYSTEM_HAS_ATOMIC_SUB_64)}
Result := AtomicDecrement(Target, 1);
{$elseif defined(FPC_SYSTEM_HAS_ATOMIC_ADD_64)}
Result := AtomicIncrement(Target, -1);
{$else}
repeat
Result := Target - 1;
until int64(Result + 1) = AtomicCmpExchange(Target, Result, Result + 1);
{$endif}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_DEC_64}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_ADD_8}
function fpc_atomic_add_8(var Target: shortint; Value: shortint): shortint;compilerproc;
begin
{$ifdef FPC_SYSTEM_HAS_ATOMIC_SUB_8}
{ the intrinsic returns the new value, but the helper needs to return the old }
Result := AtomicDecrement(Target, - Value) - Value;
{$else FPC_SYSTEM_HAS_ATOMIC_SUB_8}
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Result + Value, Result);
{$endif}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_ADD_8}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_ADD_16}
function fpc_atomic_add_16(var Target: smallint; Value: smallint): smallint;compilerproc;
begin
{$ifdef FPC_SYSTEM_HAS_ATOMIC_SUB_16}
{ the intrinsic returns the new value, but the helper needs to return the old }
Result := AtomicDecrement(Target, - Value) - Value;
{$else FPC_SYSTEM_HAS_ATOMIC_SUB_16}
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Result + Value, Result);
{$endif FPC_SYSTEM_HAS_ATOMIC_SUB_16}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_ADD_16}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_ADD_32}
function fpc_atomic_add_32(var Target: longint; Value: longint): longint;compilerproc;
begin
{$ifdef FPC_SYSTEM_HAS_ATOMIC_SUB_32}
{ the intrinsic returns the new value, but the helper needs to return the old }
Result := AtomicDecrement(Target, - Value) - Value;
{$else FPC_SYSTEM_HAS_ATOMIC_SUB_32}
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Result + Value, Result);
{$endif FPC_SYSTEM_HAS_ATOMIC_SUB_32}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_ADD_32}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_ADD_64}
function fpc_atomic_add_64(var Target: int64; Value: int64): int64;compilerproc;
begin
{$ifdef FPC_SYSTEM_HAS_ATOMIC_SUB_64}
{ the intrinsic returns the new value, but the helper needs to return the old }
Result := AtomicDecrement(Target, - Value) - Value;
{$else FPC_SYSTEM_HAS_ATOMIC_SUB_64}
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Result + Value, Result);
{$endif FPC_SYSTEM_HAS_ATOMIC_SUB_64}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_ADD_64}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_SUB_8}
function fpc_atomic_sub_8(var Target: shortint; Value: shortint): shortint;compilerproc;
begin
{$ifdef FPC_SYSTEM_HAS_ATOMIC_ADD_8}
{ the intrinsic returns the new value, but the helper needs to return the old }
Result := AtomicIncrement(Target, - Value) + Value;
{$else FPC_SYSTEM_HAS_ATOMIC_ADD_8}
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Result - Value, Result);
{$endif FPC_SYSTEM_HAS_ATOMIC_ADD_8}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_SUB_8}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_SUB_16}
function fpc_atomic_sub_16(var Target: smallint; Value: smallint): smallint;compilerproc;
begin
{$ifdef FPC_SYSTEM_HAS_ATOMIC_ADD_16}
{ the intrinsic returns the new value, but the helper needs to return the old }
Result := AtomicIncrement(Target, - Value) + Value;
{$else FPC_SYSTEM_HAS_ATOMIC_ADD_16}
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Result - Value, Result);
{$endif FPC_SYSTEM_HAS_ATOMIC_ADD_16}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_SUB_16}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_SUB_32}
function fpc_atomic_sub_32(var Target: longint; Value: longint): longint;compilerproc;
begin
{$ifdef FPC_SYSTEM_HAS_ATOMIC_ADD_32}
{ the intrinsic returns the new value, but the helper needs to return the old }
Result := AtomicIncrement(Target, - Value) + Value;
{$else FPC_SYSTEM_HAS_ATOMIC_ADD_32}
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Result - Value, Result);
{$endif FPC_SYSTEM_HAS_ATOMIC_ADD_32}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_SUB_32}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_SUB_64}
function fpc_atomic_sub_64(var Target: int64; Value: int64): int64;compilerproc;
begin
{$ifdef FPC_SYSTEM_HAS_ATOMIC_ADD_64}
{ the intrinsic returns the new value, but the helper needs to return the old }
Result := AtomicIncrement(Target, - Value) + Value;
{$else FPC_SYSTEM_HAS_ATOMIC_ADD_64}
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Result - Value, Result);
{$endif FPC_SYSTEM_HAS_ATOMIC_ADD_8}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_SUB_64}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_XCHG_8}
function fpc_atomic_xchg_8(var Target: shortint; Source: shortint): shortint;compilerproc;
begin
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Source, Result);
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_XCHG_8}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_XCHG_16}
function fpc_atomic_xchg_16(var Target: smallint; Source: smallint): smallint;compilerproc;
begin
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Source, Result);
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_XCHG_16}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_XCHG_32}
function fpc_atomic_xchg_32(var Target: longint; Source: longint): longint;compilerproc;
begin
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Source, Result);
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_XCHG_32}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_XCHG_64}
function fpc_atomic_xchg_64(var Target: int64; Source: int64): int64;compilerproc;
begin
repeat
Result := Target;
until Result = AtomicCmpExchange(Target, Source, Result);
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_XCHG_64}
{ the variant of fpc_atomic_cmp_xchg_<alusize>() needs to be implemented by
the corresponding platforms include file, then the default functions can do
the job (poorly) until the other functions are implemented for the platform }
procedure AtomicEnterLock; forward;
procedure AtomicLeaveLock; forward;
{$ifndef FPC_SYSTEM_HAS_ATOMIC_CMP_XCHG_8}
{$if SizeOf(ALUSInt) = SizeOf(ShortInt)}
{$message warning 'At least fpc_atomic_cmp_xchg_8 must be implemented for the current platform'}
{$define FPC_SYSTEM_ATOMIC_8_NO_LOCK}
{$else}
{$define FPC_SYSTEM_NEEDS_ATOMIC_FALLBACK}
{$endif}
function fpc_atomic_cmp_xchg_8(var Target: shortint; NewValue: shortint; Comparand: shortint): shortint;compilerproc;
begin
{$ifndef FPC_SYSTEM_ATOMIC_8_NO_LOCK}
AtomicEnterLock;
{$endif FPC_SYSTEM_ATOMIC_8_NO_LOCK}
Result:=Target;
if Target=Comparand then
Target:=NewValue;
{$ifndef FPC_SYSTEM_ATOMIC_8_NO_LOCK}
AtomicLeaveLock;
{$endif FPC_SYSTEM_ATOMIC_8_NO_LOCK}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_CMP_XCHG_8}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_CMP_XCHG_16}
{$if SizeOf(ALUSInt) = SizeOf(SmallInt)}
{$message warning 'At least fpc_atomic_cmp_xchg_16 must be implemented for the current platform'}
{$define FPC_SYSTEM_ATOMIC_16_NO_LOCK}
{$else}
{$define FPC_SYSTEM_NEEDS_ATOMIC_FALLBACK}
{$endif}
function fpc_atomic_cmp_xchg_16(var Target: smallint; NewValue: smallint; Comparand: smallint): smallint;compilerproc;
begin
{$ifndef FPC_SYSTEM_ATOMIC_16_NO_LOCK}
AtomicEnterLock;
{$endif FPC_SYSTEM_ATOMIC_16_NO_LOCK}
Result:=Target;
if Target=Comparand then
Target:=NewValue;
{$ifndef FPC_SYSTEM_ATOMIC_16_NO_LOCK}
AtomicLeaveLock;
{$endif FPC_SYSTEM_ATOMIC_16_NO_LOCK}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_CMP_XCHG_16}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_CMP_XCHG_32}
{$if SizeOf(ALUSInt) = SizeOf(LongInt)}
{$message warning 'At least fpc_atomic_cmp_xchg_32 must be implemented for the current platform'}
{$define FPC_SYSTEM_ATOMIC_32_NO_LOCK}
{$else}
{$define FPC_SYSTEM_NEEDS_ATOMIC_FALLBACK}
{$endif}
function fpc_atomic_cmp_xchg_32(var Target: longint; NewValue: longint; Comparand: longint): longint;compilerproc;
begin
{$ifndef FPC_SYSTEM_ATOMIC_32_NO_LOCK}
AtomicEnterLock;
{$endif FPC_SYSTEM_ATOMIC_32_NO_LOCK}
Result:=Target;
if Target=Comparand then
Target:=NewValue;
{$ifndef FPC_SYSTEM_ATOMIC_32_NO_LOCK}
AtomicLeaveLock;
{$endif FPC_SYSTEM_ATOMIC_32_NO_LOCK}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_CMP_XCHG_32}
{$ifndef FPC_SYSTEM_HAS_ATOMIC_CMP_XCHG_64}
{$if SizeOf(ALUSInt) = SizeOf(Int64)}
{$message warning 'At least fpc_atomic_cmp_xchg_64 must be implemented for the current platform'}
{$define FPC_SYSTEM_ATOMIC_64_NO_LOCK}
{$else}
{$define FPC_SYSTEM_NEEDS_ATOMIC_FALLBACK}
{$endif}
function fpc_atomic_cmp_xchg_64(var Target: int64; NewValue: int64; Comparand: int64): int64;compilerproc;
begin
{$ifndef FPC_SYSTEM_ATOMIC_64_NO_LOCK}
AtomicEnterLock;
{$endif FPC_SYSTEM_ATOMIC_64_NO_LOCK}
Result:=Target;
if Target=Comparand then
Target:=NewValue;
{$ifndef FPC_SYSTEM_ATOMIC_64_NO_LOCK}
AtomicLeaveLock;
{$endif FPC_SYSTEM_ATOMIC_64_NO_LOCK}
end;
{$endif FPC_SYSTEM_HAS_ATOMIC_CMP_XCHG_64}
{$if defined(FPC_SYSTEM_NEEDS_ATOMIC_FALLBACK)}
var
gAtomicLock: ALUSInt = 0;
function fpc_atomic_cmp_xchg_alu(var Target: ALUSInt; NewValue: ALUSInt; Comparand: ALUSInt): ALUSInt; external name
{$if defined(CPUINT8)}
'FPC_ATOMIC_CMP_XCHG_8'
{$elseif defined(CPUINT16)}
'FPC_ATOMIC_CMP_XCHG_16'
{$elseif defined(CPUINT32)}
'FPC_ATOMIC_CMP_XCHG_32'
{$elseif defined(CPUINT64)}
'FPC_ATOMIC_CMP_XCHG_64'
{$else}
'FPC_ATOMIC_CMP_XCHG_UNKNOWN'
{$endif}
;
procedure AtomicEnterLock;
var
r: ALUSInt;
begin
{ spin until we get the lock }
repeat
r := fpc_atomic_cmp_xchg_alu(gAtomicLock, 1, 0);
until r = 0;
end;
procedure AtomicLeaveLock;
begin
fpc_atomic_cmp_xchg_alu(gAtomicLock, 0, 1);
end;
{$else}
procedure AtomicEnterLock;
begin
end;
procedure AtomicLeaveLock;
begin
end;
{$endif}
{$ifdef cpu16}
function InterlockedIncrement (var Target: smallint) : smallint;
begin
Result := AtomicIncrement(Target);
end;
function InterlockedDecrement (var Target: smallint) : smallint;
begin
Result := AtomicDecrement(Target);
end;
function InterlockedExchange (var Target: smallint;Source : smallint) : smallint;
begin
Result := AtomicExchange(Target, Source);
end;
function InterlockedExchangeAdd (var Target: smallint;Source : smallint) : smallint;
begin
Result := AtomicIncrement(Target, Source) - Source;
end;
function InterlockedCompareExchange(var Target: smallint; NewValue: smallint; Comperand: smallint): smallint;
begin
Result := AtomicCmpExchange(Target, NewValue, Comperand);
end;
{$endif cpu16}
function InterlockedIncrement (var Target: longint) : longint;
begin
Result := AtomicIncrement(Target);
end;
function InterlockedDecrement (var Target: longint) : longint;
begin
Result := AtomicDecrement(Target);
end;
function InterlockedExchange (var Target: longint;Source : longint) : longint;
begin
Result := AtomicExchange(Target, Source);
end;
function InterlockedExchangeAdd (var Target: longint;Source : longint) : longint;
begin
Result := AtomicIncrement(Target, Source) - Source;
end;
function InterlockedCompareExchange(var Target: longint; NewValue: longint; Comperand: longint): longint;
begin
Result := AtomicCmpExchange(Target, NewValue, Comperand);
end;
{$ifdef cpu64}
function InterlockedIncrement64 (var Target: int64) : int64;
begin
Result := AtomicIncrement(Target);
end;
function InterlockedDecrement64 (var Target: int64) : int64;
begin
Result := AtomicDecrement(Target);
end;
function InterlockedExchange64 (var Target: int64;Source : int64) : int64;
begin
Result := AtomicExchange(Target, Source);
end;
function InterlockedExchangeAdd64 (var Target: int64;Source : int64) : int64;
begin
Result := AtomicIncrement(Target, Source) - Source;
end;
function InterlockedCompareExchange64(var Target: int64; NewValue: int64; Comperand: int64): int64;
begin
Result := AtomicCmpExchange(Target, NewValue, Comperand);
end;
{$endif cpu64}
{$pop}
{$endif VER3_2}