fpc/rtl/jvm/jvm.inc
Jonas Maebe 144ba2a2ad * enabled (generic) fpc_pchar_length() and fpc_pwidechar_length()
git-svn-id: branches/jvmbackend@18771 -
2011-08-20 08:34:31 +00:00

377 lines
10 KiB
PHP

{
This file is part of the Free Pascal run time library.
Copyright (c) 2011 by the Free Pascal development team.
Processor dependent implementation for the system unit for
JVM
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.
**********************************************************************}
{****************************************************************************
JVM specific stuff
****************************************************************************}
{$define FPC_SYSTEM_HAS_SYSINITFPU}
Procedure SysInitFPU;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
softfloat_exception_mask:=float_flag_underflow or float_flag_inexact or float_flag_denormal;
end;
{$define FPC_SYSTEM_HAS_SYSRESETFPU}
Procedure SysResetFPU;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
softfloat_exception_flags:=0;
end;
procedure fpc_cpuinit;
begin
SysResetFPU;
if not(IsLibrary) then
SysInitFPU;
end;
{$define FPC_SYSTEM_HAS_GET_FRAME}
function get_frame:pointer;
begin
result:=nil;
end;
{$define FPC_SYSTEM_HAS_GET_CALLER_ADDR}
function get_caller_addr(framebp:pointer):pointer;
begin
result:=nil;
end;
{$define FPC_SYSTEM_HAS_GET_CALLER_FRAME}
function get_caller_frame(framebp:pointer):pointer;
begin
result:=nil;
end;
{$define FPC_SYSTEM_HAS_SPTR}
function Sptr:Pointer;
begin
result:=nil;
end;
{****************************************************************************
Primitives
****************************************************************************}
{ lie so that the non-compilable generic versions will be skipped }
{$define FPC_SYSTEM_HAS_MOVE}
{$define FPC_SYSTEM_HAS_FILLCHAR}
{$define FPC_SYSTEM_HAS_FILLWORD}
{$define FPC_SYSTEM_HAS_FILLDWORD}
{$define FPC_SYSTEM_HAS_FILLQWORD}
{$define FPC_SYSTEM_HAS_INDEXBYTE}
{$define FPC_SYSTEM_HAS_INDEXWORD}
{$define FPC_SYSTEM_HAS_INDEXDWORD}
{$define FPC_SYSTEM_HAS_INDEXQWORD}
{$define FPC_SYSTEM_HAS_COMPAREBYTE}
{$define FPC_SYSTEM_HAS_COMPAREWORD}
{$define FPC_SYSTEM_HAS_COMPAREDWORD}
{$define FPC_SYSTEM_HAS_MOVECHAR0}
{$define FPC_SYSTEM_HAS_INDEXCHAR0}
{$define FPC_SYSTEM_HAS_COMPARECHAR0}
{****************************************************************************
String
****************************************************************************}
{ more lies }
{$define FPC_STRTOSHORTSTRINGPROC}
{$define FPC_SYSTEM_HAS_FPC_PCHAR_TO_SHORTSTR}
procedure fpc_pchar_to_shortstr(out res : shortstring;p:pchar); compilerproc;
var
i, len: longint;
arr: TAnsiCharArray;
begin
arr:=TAnsiCharArray(p);
i:=0;
while arr[i]<>#0 do
inc(i);
if i<>0 then
res:=pshortstring(ShortStringClass.create(arr,min(i,high(res))))^
else
res:=''
end;
{$define FPC_SYSTEM_HAS_FPC_SHORTSTR_ASSIGN}
procedure fpc_shortstr_to_shortstr(out res:shortstring; const sstr: shortstring); compilerproc;
var
len: longint;
begin
len:=length(sstr);
if len>high(res) then
len:=high(res);
ShortstringClass(@res).curlen:=len;
JLSystem.ArrayCopy(JLObject(ShortstringClass(@sstr).fdata),0,JLObject(ShortstringClass(@res).fdata),0,len);
end;
{$define FPC_SYSTEM_HAS_FPC_SHORTSTR_CONCAT}
procedure fpc_shortstr_concat(var dests:shortstring;const s1,s2:shortstring);compilerproc;
var
tmpres: ShortstringClass;
s1l, s2l: longint;
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;
if ShortstringClass(@dests)=ShortstringClass(@s1) then
JLSystem.ArrayCopy(JLObject(ShortstringClass(@s2).fdata),0,JLObject(ShortstringClass(@dests).fdata),s1l,s2l)
else if ShortstringClass(@dests)=ShortstringClass(@s2) then
begin
JLSystem.ArrayCopy(JLObject(ShortstringClass(@dests).fdata),0,JLObject(ShortstringClass(@dests).fdata),s1l,s2l);
JLSystem.ArrayCopy(JLObject(ShortstringClass(@s1).fdata),0,JLObject(ShortstringClass(@dests).fdata),0,s1l);
end
else
begin
JLSystem.ArrayCopy(JLObject(ShortstringClass(@s1).fdata),0,JLObject(ShortstringClass(@dests).fdata),0,s1l);
JLSystem.ArrayCopy(JLObject(ShortstringClass(@s2).fdata),0,JLObject(ShortstringClass(@dests).fdata),s1l,s2l)
end;
ShortstringClass(@dests).curlen:=s1l+s2l;
end;
procedure fpc_shortstr_concat_multi(var dests:shortstring;const sarr:array of ShortstringClass);compilerproc;
var
s2l : byte;
LowStart,i,
Len : longint;
needtemp : boolean;
tmpstr : shortstring;
p,pdest : ShortstringClass;
begin
if high(sarr)=0 then
begin
DestS:='';
exit;
end;
lowstart:=low(sarr);
if ShortstringClass(@DestS)=sarr[lowstart] then
inc(lowstart);
{ Check for another reuse, then we can't use
the append optimization and need to use a temp }
needtemp:=false;
for i:=lowstart to high(sarr) do
begin
if ShortstringClass(@DestS)=sarr[i] then
begin
needtemp:=true;
break;
end;
end;
if needtemp then
begin
lowstart:=low(sarr);
tmpstr:='';
pdest:=ShortstringClass(@tmpstr)
end
else
begin
{ Start with empty DestS if we start with concatting
the first array element }
if lowstart=low(sarr) then
DestS:='';
pdest:=ShortstringClass(@DestS);
end;
{ Concat all strings, except the string we already
copied in DestS }
Len:=pdest.curlen;
for i:=lowstart to high(sarr) do
begin
p:=sarr[i];
if assigned(p) then
begin
s2l:=p.curlen;
if Len+s2l>high(dests) then
s2l:=high(dests)-Len;
JLSystem.ArrayCopy(JLObject(p.fdata),0,JLObject(pdest.fdata),len,s2l);
inc(Len,s2l);
end;
end;
pdest.curlen:=len;
if needtemp then
DestS:=TmpStr;
end;
{$define FPC_SYSTEM_HAS_FPC_SHORTSTR_APPEND_SHORTSTR}
procedure fpc_shortstr_append_shortstr(var s1:shortstring;const s2:shortstring); compilerproc;
var
s1l, s2l : integer;
begin
s1l:=length(s1);
s2l:=length(s2);
if s1l+s2l>high(s1) then
s2l:=high(s1)-s1l;
JLSystem.ArrayCopy(JLObject(ShortstringClass(@s2).fdata),0,JLObject(ShortstringClass(@s1).fdata),s1l,s2l);
s1[0]:=chr(s1l+s2l);
end;
{$define FPC_SYSTEM_HAS_FPC_SHORTSTR_COMPARE}
function fpc_shortstr_compare(const left,right:shortstring) : longint; compilerproc;
Var
MaxI,Temp, i : SizeInt;
begin
if ShortstringClass(@left)=ShortstringClass(@right) then
begin
result:=0;
exit;
end;
Maxi:=Length(left);
temp:=Length(right);
If MaxI>Temp then
MaxI:=Temp;
if MaxI>0 then
begin
for i:=0 to MaxI-1 do
begin
result:=ord(ShortstringClass(@left).fdata[i])-ord(ShortstringClass(@right).fdata[i]);
if result<>0 then
exit;
end;
result:=Length(left)-Length(right);
end
else
result:=Length(left)-Length(right);
end;
{$define FPC_SYSTEM_HAS_FPC_SHORTSTR_COMPARE_EQUAL}
function fpc_shortstr_compare_intern(const left,right:shortstring) : longint; external name 'fpc_shortstr_compare';
function fpc_shortstr_compare_equal(const left,right:shortstring) : longint; compilerproc;
begin
{ perform normal comparsion, because JUArrays.equals() only returns true if
the arrays have equal length, while we only want to compare curlen bytes }
result:=fpc_shortstr_compare_intern(left,right);
end;
{$define FPC_SYSTEM_HAS_FPC_CHARARRAY_TO_SHORTSTR}
procedure fpc_chararray_to_shortstr(out res : shortstring;const arr: array of AnsiChar; zerobased: boolean = true); compilerproc;
var
l: longint;
index: longint;
len: byte;
foundnull: boolean;
begin
l:=high(arr)+1;
if l>=high(res)+1 then
l:=high(res)
else if l<0 then
l:=0;
if zerobased then
begin
foundnull:=false;
for index:=low(arr) to l-1 do
if arr[index]=#0 then
begin
foundnull:=true;
break;
end;
if not foundnull then
len:=l
else
len:=index;
end
else
len:=l;
JLSystem.ArrayCopy(JLObject(@arr),0,JLObject(ShortstringClass(@res).fdata),0,len);
ShortstringClass(@res).curlen:=len;
end;
{$define FPC_SYSTEM_HAS_FPC_SHORTSTR_TO_CHARARRAY}
procedure fpc_shortstr_to_chararray(out res: array of AnsiChar; const src: ShortString); compilerproc;
var
len: longint;
begin
len:=length(src);
if len>length(res) then
len:=length(res);
{ make sure we don't access char 1 if length is 0 (JM) }
if len>0 then
JLSystem.ArrayCopy(JLObject(ShortstringClass(@src).fdata),0,JLObject(@res),0,len);
if len<=high(res) then
JUArrays.fill(TJByteArray(@res),len,high(res),0);
end;
{****************************************************************************
Str()
****************************************************************************}
{$define FPC_SYSTEM_HAS_INT_STR_LONGINT}
procedure int_str(l:longint;out s:shortstring);
begin
s:=unicodestring(JLInteger.valueOf(l).toString);
end;
{$define FPC_SYSTEM_HAS_INT_STR_LONGWORD}
procedure int_str_unsigned(l:longword;out s:shortstring);
begin
s:=unicodestring(JLLong.valueOf(l).toString);
end;
{$define FPC_SYSTEM_HAS_INT_STR_INT64}
procedure int_str(l:int64;out s:shortstring);
begin
s:=unicodestring(JLLong.valueOf(l).toString);
end;
{$define FPC_SYSTEM_HAS_INT_STR_QWORD}
procedure int_str_unsigned(l:qword;out s:shortstring);
var
tmp: int64;
tmpstr: JLString;
bi: JMBigInteger;
begin
tmp:=int64(l);
tmpstr:=JLLong.valueOf(tmp and $7fffffffffffffff).toString;
if tmp<0 then
begin
{ no unsigned 64 bit types in Java -> use big integer to add
high(int64) to the string representation }
bi:=JMBigInteger.Create(tmpstr);
bi:=bi.add(JMBigInteger.Create('9223372036854775808'));
tmpstr:=bi.toString;
end;
s:=unicodestring(tmpstr);
end;
{ lies... }
{$define FPC_SYSTEM_HAS_ODD_LONGWORD}
{$define FPC_SYSTEM_HAS_ODD_QWORD}
{$define FPC_SYSTEM_HAS_SQR_QWORD}