{
This file is part of the Free Pascal Run time library.
Copyright (c) 1999-2000 by the Free Pascal development team
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.
**********************************************************************}
{****************************************************************************
Local types
****************************************************************************}
{
TextRec and FileRec are put in a separate file to make it available to other
units without putting it explicitly in systemh.
This way we keep TP compatibility, and the TextRec definition is available
for everyone who needs it.
}
{$i filerec.inc}
{$i textrec.inc}
Procedure HandleError (Errno : Longint); forward;
Procedure HandleErrorFrame (Errno : longint;frame : Pointer); forward;
type
FileFunc = Procedure(var t : TextRec);
const
STACK_MARGIN = 16384; { Stack size margin for stack checking }
{ Random / Randomize constants }
OldRandSeed : Cardinal = 0;
{ For Error Handling.}
ErrorBase : Pointer = nil;
{ Used by the ansistrings and maybe also other things in the future }
var
emptychar : char;public name 'FPC_EMPTYCHAR';
initialstklen : SizeUint;external name '__stklen';
{ checks whether the given suggested size for the stack of the current
thread is acceptable. If this is the case, returns it unaltered.
Otherwise it should return an acceptable value.
Operating systems that automatically expand their stack on demand, should
simply return a very large value.
Operating systems which do not have a possibility to retrieve stack size
information, should simply return the given stklen value (This is the default
implementation).
}
{$ifdef FPC_HAS_FEATURE_STACKCHECK}
function CheckInitialStkLen(stklen : SizeUInt) : SizeUInt; forward;
{$endif FPC_HAS_FEATURE_STACKCHECK}
{****************************************************************************
Include processor specific routines
****************************************************************************}
{$ifdef FPC_USE_LIBC}
{ prefer libc implementations over our own, as they're most likely faster }
{$i cgeneric.inc}
{ is now declared as external reference to another routine in the interface }
{$i cgenstr.inc}
{$endif FPC_USE_LIBC}
{$ifdef cpui386}
{$ifdef SYSPROCDEFINED}
{$Error Can't determine processor type !}
{$endif}
{$i i386.inc} { Case dependent, don't change }
{$endif cpui386}
{$ifdef cpum68k}
{$ifdef SYSPROCDEFINED}
{$Error Can't determine processor type !}
{$endif}
{$i m68k.inc} { Case dependent, don't change }
{$define SYSPROCDEFINED}
{$endif cpum68k}
{$ifdef cpux86_64}
{$ifdef SYSPROCDEFINED}
{$Error Can't determine processor type !}
{$endif}
{$i x86_64.inc} { Case dependent, don't change }
{$define SYSPROCDEFINED}
{$endif cpux86_64}
{$ifdef cpupowerpc32}
{$ifdef SYSPROCDEFINED}
{$Error Can't determine processor type !}
{$endif}
{$i powerpc.inc} { Case dependent, don't change }
{$define SYSPROCDEFINED}
{$endif cpupowerpc32}
{$ifdef cpupowerpc64}
{$ifdef SYSPROCDEFINED}
{$Error Can't determine processor type !}
{$endif}
{$i powerpc64.inc} { Case dependent, don't change }
{$define SYSPROCDEFINED}
{$endif cpupowerpc64}
{$ifdef cpualpha}
{$ifdef SYSPROCDEFINED}
{$Error Can't determine processor type !}
{$endif}
{$i alpha.inc} { Case dependent, don't change }
{$define SYSPROCDEFINED}
{$endif cpualpha}
{$ifdef cpuiA64}
{$ifdef SYSPROCDEFINED}
{$Error Can't determine processor type !}
{$endif}
{$i ia64.inc} { Case dependent, don't change }
{$define SYSPROCDEFINED}
{$endif cpuiA64}
{$ifdef cpusparc}
{$ifdef SYSPROCDEFINED}
{$Error Can't determine processor type !}
{$endif}
{$i sparc.inc} { Case dependent, don't change }
{$define SYSPROCDEFINED}
{$endif cpusparc}
{$ifdef cpuarm}
{$ifdef SYSPROCDEFINED}
{$Error Can't determine processor type !}
{$endif}
{$i arm.inc} { Case dependent, don't change }
{$define SYSPROCDEFINED}
{$endif cpuarm}
{$ifndef INTERNALMOVEFILLCHAR}
procedure fillchar(var x;count : SizeInt;value : boolean);{$ifdef SYSTEMINLINE}inline;{$endif}
begin
fillchar(x,count,byte(value));
end;
procedure fillchar(var x;count : SizeInt;value : char);{$ifdef SYSTEMINLINE}inline;{$endif}
begin
fillchar(x,count,byte(value));
end;
{$endif INTERNALMOVEFILLCHAR}
{ Include generic pascal only routines which are not defined in the processor
specific include file }
{$I generic.inc}
{****************************************************************************
Set Handling
****************************************************************************}
{ Include set support which is processor specific}
{$i set.inc}
{ Include generic pascal routines for sets if the processor }
{ specific routines are not available. }
{$i genset.inc}
{****************************************************************************
Math Routines
****************************************************************************}
function Hi(b : byte): byte;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Hi := b shr 4
end;
function Lo(b : byte): byte;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
Lo := b and $0f
end;
Function swap (X : Word) : Word;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
swap:=(X and $ff) shl 8 + (X shr 8)
End;
Function Swap (X : Integer) : Integer;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
{ the extra 'and $ff' in the right term is necessary because the }
{ 'X shr 8' is turned into "longint(X) shr 8", so if x < 0 then }
{ the sign bits from the upper 16 bits are shifted in rather than }
{ zeroes. Another bug for TP/Delphi compatibility... }
swap:=(X and $ff) shl 8 + ((X shr 8) and $ff)
End;
Function swap (X : Longint) : Longint;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
Swap:=(X and $ffff) shl 16 + (X shr 16)
End;
Function Swap (X : Cardinal) : Cardinal;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
Swap:=(X and $ffff) shl 16 + (X shr 16)
End;
Function Swap (X : QWord) : QWord;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
Swap:=(X and $ffffffff) shl 32 + (X shr 32);
End;
Function swap (X : Int64) : Int64;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
Swap:=(X and $ffffffff) shl 32 + (X shr 32);
End;
{$ifdef SUPPORT_DOUBLE}
operator := (b:real48) d:double;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
D:=real2double(b);
end;
{$endif SUPPORT_DOUBLE}
{$ifdef SUPPORT_EXTENDED}
operator := (b:real48) e:extended;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
e:=real2double(b);
end;
{$endif SUPPORT_EXTENDED}
{$ifdef FPC_USE_LIBC}
{ Include libc versions }
{$i cgenmath.inc}
{$endif FPC_USE_LIBC}
{ Include processor specific routines }
{$I math.inc}
{ Include generic version }
{$I genmath.inc}
function aligntoptr(p : pointer) : pointer;inline;
begin
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
result:=align(p,sizeof(p));
{$else FPC_REQUIRES_PROPER_ALIGNMENT}
result:=p;
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
end;
{****************************************************************************
Subroutines for String handling
****************************************************************************}
{ Needs to be before RTTI handling }
{$i sstrings.inc}
{ requires sstrings.inc for initval }
{$I int64p.inc}
{$I int64.inc}
{Requires int64.inc, since that contains the VAL functions for int64 and qword}
{$ifdef FPC_HAS_FEATURE_ANSISTRINGS}
{$i astrings.inc}
{$endif FPC_HAS_FEATURE_ANSISTRINGS}
{$ifdef FPC_HAS_FEATURE_WIDESTRINGS}
{$i wstrings.inc}
{$endif FPC_HAS_FEATURE_WIDESTRINGS}
{$i aliases.inc}
{*****************************************************************************
Dynamic Array support
*****************************************************************************}
{$ifdef FPC_HAS_FEATURE_DYNARRAYS}
{$i dynarr.inc}
{$endif FPC_HAS_FEATURE_DYNARRAYS}
{*****************************************************************************
Object Pascal support
*****************************************************************************}
{$ifdef FPC_HAS_FEATURE_CLASSES}
{$i objpas.inc}
{$endif FPC_HAS_FEATURE_CLASSES}
{*****************************************************************************
Variant support
*****************************************************************************}
{$ifdef FPC_HAS_FEATURE_VARIANTS}
{$i variant.inc}
{$endif FPC_HAS_FEATURE_VARIANTS}
{****************************************************************************
Run-Time Type Information (RTTI)
****************************************************************************}
{$ifdef FPC_HAS_FEATURE_RTTI}
{$i rtti.inc}
{$endif FPC_HAS_FEATURE_VARIANTS}
{----------------------------------------------------------------------
Mersenne Twister: A 623-Dimensionally Equidistributed Uniform
Pseudo-Random Number Generator.
What is Mersenne Twister?
Mersenne Twister(MT) is a pseudorandom number generator developped by
Makoto Matsumoto and Takuji Nishimura (alphabetical order) during
1996-1997. MT has the following merits:
It is designed with consideration on the flaws of various existing
generators.
Far longer period and far higher order of equidistribution than any
other implemented generators. (It is proved that the period is 2^19937-1,
and 623-dimensional equidistribution property is assured.)
Fast generation. (Although it depends on the system, it is reported that
MT is sometimes faster than the standard ANSI-C library in a system
with pipeline and cache memory.)
Efficient use of the memory. (The implemented C-code mt19937.c
consumes only 624 words of working area.)
home page
http://www.math.keio.ac.jp/~matumoto/emt.html
original c source
http://www.math.keio.ac.jp/~nisimura/random/int/mt19937int.c
Coded by Takuji Nishimura, considering the suggestions by
Topher Cooper and Marc Rieffel in July-Aug. 1997.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later
version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Library General Public License for more details.
You should have received a copy of the GNU Library General
Public License along with this library; if not, write to the
Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA
Copyright (C) 1997, 1999 Makoto Matsumoto and Takuji Nishimura.
When you use this, send an email to: matumoto@math.keio.ac.jp
with an appropriate reference to your work.
REFERENCE
M. Matsumoto and T. Nishimura,
"Mersenne Twister: A 623-Dimensionally Equidistributed Uniform
Pseudo-Random Number Generator",
ACM Transactions on Modeling and Computer Simulation,
Vol. 8, No. 1, January 1998, pp 3--30.
Translated to OP and Delphi interface added by Roman Krejci (6.12.1999)
http://www.rksolution.cz/delphi/tips.htm
Revised 21.6.2000: Bug in the function RandInt_MT19937 fixed
2003/10/26: adapted to use the improved intialisation mentioned at
<http://www.math.keio.ac.jp/~matumoto/MT2002/emt19937ar.html> and
removed the assembler code
----------------------------------------------------------------------}
{$R-} {range checking off}
{$Q-} {overflow checking off}
{ Period parameter }
Const
MT19937N=624;
Type
tMT19937StateArray = array [0..MT19937N-1] of longint; // the array for the state vector
{ Period parameters }
const
MT19937M=397;
MT19937MATRIX_A =$9908b0df; // constant vector a
MT19937UPPER_MASK=$80000000; // most significant w-r bits
MT19937LOWER_MASK=$7fffffff; // least significant r bits
{ Tempering parameters }
TEMPERING_MASK_B=$9d2c5680;
TEMPERING_MASK_C=$efc60000;
VAR
mt : tMT19937StateArray;
const
mti: longint=MT19937N+1; // mti=MT19937N+1 means mt[] is not initialized
{ Initializing the array with a seed }
procedure sgenrand_MT19937(seed: longint);
var
i: longint;
begin
mt[0] := seed;
for i := 1 to MT19937N-1 do
begin
mt[i] := 1812433253 * (mt[i-1] xor (mt[i-1] shr 30)) + i;
{ See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier. }
{ In the previous versions, MSBs of the seed affect }
{ only MSBs of the array mt[]. }
{ 2002/01/09 modified by Makoto Matsumoto }
end;
mti := MT19937N;
end;
function genrand_MT19937: longint;
const
mag01 : array [0..1] of longint =(0, longint(MT19937MATRIX_A));
var
y: longint;
kk: longint;
begin
if RandSeed<>OldRandSeed then
mti:=MT19937N+1;
if (mti >= MT19937N) { generate MT19937N longints at one time }
then begin
if mti = (MT19937N+1) then // if sgenrand_MT19937() has not been called,
begin
sgenrand_MT19937(randseed); // default initial seed is used
{ hack: randseed is not used more than once in this algorithm. Most }
{ user changes are re-initialising reandseed with the value it had }
{ at the start -> with the "not", we will detect this change. }
{ Detecting other changes is not useful, since the generated }
{ numbers will be different anyway. }
randseed := not(randseed);
oldrandseed := randseed;
end;
for kk:=0 to MT19937N-MT19937M-1 do begin
y := (mt[kk] and MT19937UPPER_MASK) or (mt[kk+1] and MT19937LOWER_MASK);
mt[kk] := mt[kk+MT19937M] xor (y shr 1) xor mag01[y and $00000001];
end;
for kk:= MT19937N-MT19937M to MT19937N-2 do begin
y := (mt[kk] and MT19937UPPER_MASK) or (mt[kk+1] and MT19937LOWER_MASK);
mt[kk] := mt[kk+(MT19937M-MT19937N)] xor (y shr 1) xor mag01[y and $00000001];
end;
y := (mt[MT19937N-1] and MT19937UPPER_MASK) or (mt[0] and MT19937LOWER_MASK);
mt[MT19937N-1] := mt[MT19937M-1] xor (y shr 1) xor mag01[y and $00000001];
mti := 0;
end;
y := mt[mti]; inc(mti);
y := y xor (y shr 11);
y := y xor (y shl 7) and TEMPERING_MASK_B;
y := y xor (y shl 15) and TEMPERING_MASK_C;
y := y xor (y shr 18);
Result := y;
end;
function random(l:longint): longint;
begin
{ otherwise we can return values = l (JM) }
if (l < 0) then
inc(l);
random := longint((int64(cardinal(genrand_MT19937))*l) shr 32);
end;
function random(l:int64): int64;
begin
{ always call random, so the random generator cycles (TP-compatible) (JM) }
random := int64((qword(cardinal(genrand_MT19937)) or ((qword(cardinal(genrand_MT19937)) shl 32))) and $7fffffffffffffff);
if (l<>0) then
random := random mod l
else
random := 0;
end;
function random: extended;
begin
random := cardinal(genrand_MT19937) * (1.0/(int64(1) shl 32));
end;
{****************************************************************************
Memory Management
****************************************************************************}
Function Ptr(sel,off : Longint) : farpointer;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
ptr:=farpointer((sel shl 4)+off);
End;
Function CSeg : Word;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
Cseg:=0;
End;
Function DSeg : Word;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
Dseg:=0;
End;
Function SSeg : Word;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
Sseg:=0;
End;
{*****************************************************************************
Directory support.
*****************************************************************************}
{$if defined(FPC_HAS_FEATURE_FILEIO) and defined(FPC_HAS_FEATURE_ANSISTRINGS)}
Procedure getdir(drivenr:byte;Var dir:ansistring);
{ this is needed to also allow ansistrings, the shortstring version is
OS dependent }
var
s : shortstring;
begin
getdir(drivenr,s);
dir:=s;
end;
{$endif}
{$ifopt R+}
{$define RangeCheckWasOn}
{$R-}
{$endif opt R+}
{$ifopt I+}
{$define IOCheckWasOn}
{$I-}
{$endif opt I+}
{$ifopt Q+}
{$define OverflowCheckWasOn}
{$Q-}
{$endif opt Q+}
{*****************************************************************************
Miscellaneous
*****************************************************************************}
procedure fpc_rangeerror;[public,alias:'FPC_RANGEERROR']; compilerproc;
begin
HandleErrorFrame(201,get_frame);
end;
procedure fpc_divbyzero;[public,alias:'FPC_DIVBYZERO']; compilerproc;
begin
HandleErrorFrame(200,get_frame);
end;
procedure fpc_overflow;[public,alias:'FPC_OVERFLOW']; compilerproc;
begin
HandleErrorFrame(215,get_frame);
end;
procedure fpc_iocheck;[public,alias:'FPC_IOCHECK']; compilerproc;
var
l : longint;
begin
if InOutRes<>0 then
begin
l:=InOutRes;
InOutRes:=0;
HandleErrorFrame(l,get_frame);
end;
end;
Function IOResult:Word;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
IOResult:=InOutRes;
InOutRes:=0;
End;
Function GetThreadID:TThreadID;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
(* ThreadID is stored in a threadvar and made available in interface *)
(* to allow setup of this value during thread initialization. *)
GetThreadID := ThreadID;
end;
function fpc_safecallcheck(res : hresult) : hresult;[public,alias:'FPC_SAFECALLCHECK']; compilerproc;
begin
if res<0 then
begin
if assigned(SafeCallErrorProc) then
SafeCallErrorProc(res,get_frame);
HandleErrorFrame(229,get_frame);
end;
result:=res;
end;
{*****************************************************************************
Stack check code
*****************************************************************************}
{$IFNDEF NO_GENERIC_STACK_CHECK}
{$IFOPT S+}
{$DEFINE STACKCHECK}
{$ENDIF}
{$S-}
procedure fpc_stackcheck(stack_size:SizeUInt);[public,alias:'FPC_STACKCHECK'];
var
c : Pointer;
begin
{ Avoid recursive calls when called from the exit routines }
if StackError then
exit;
c := Sptr - (stack_size + STACK_MARGIN);
if (c <= StackBottom) then
begin
StackError:=true;
HandleError(202);
end;
end;
{$IFDEF STACKCHECK}
{$S+}
{$ENDIF}
{$UNDEF STACKCHECK}
{$ENDIF NO_GENERIC_STACK_CHECK}
{*****************************************************************************
Initialization / Finalization
*****************************************************************************}
const
maxunits=1024; { See also files.pas of the compiler source }
type
TInitFinalRec=record
InitProc,
FinalProc : TProcedure;
end;
TInitFinalTable=record
TableCount,
InitCount : longint;
Procs : array[1..maxunits] of TInitFinalRec;
end;
var
InitFinalTable : TInitFinalTable;external name 'INITFINAL';
procedure fpc_InitializeUnits;[public,alias:'FPC_INITIALIZEUNITS']; compilerproc;
var
i : longint;
begin
{ call cpu/fpu initialisation routine }
fpc_cpuinit;
with InitFinalTable do
begin
for i:=1 to TableCount do
begin
if assigned(Procs[i].InitProc) then
Procs[i].InitProc();
InitCount:=i;
end;
end;
if assigned(InitProc) then
TProcedure(InitProc)();
end;
procedure FinalizeUnits;[public,alias:'FPC_FINALIZEUNITS'];
begin
with InitFinalTable do
begin
while (InitCount>0) do
begin
// we've to decrement the cound before calling the final. code
// else a halt in the final. code leads to a endless loop
dec(InitCount);
if assigned(Procs[InitCount+1].FinalProc) then
Procs[InitCount+1].FinalProc();
end;
end;
end;
{*****************************************************************************
Error / Exit / ExitProc
*****************************************************************************}
Procedure system_exit;forward;
{$ifdef FPC_HAS_FEATURE_HEAP}
{$if not (defined(HAS_MEMORYMANAGER) or defined(HAS_MT_MEMORYMANAGER))}
//not needed if independant memory manager
Procedure FinalizeHeap;forward;
{$endif HAS_MEMORYMANAGER}
{$endif FPC_HAS_FEATURE_HEAP}
Procedure InternalExit;
var
current_exit : Procedure;
pstdout : ^Text;
{$if defined(MSWINDOWS) or defined(OS2)}
i : longint;
{$endif}
Begin
{$ifdef SYSTEMDEBUG}
writeln('InternalExit');
{$endif SYSTEMDEBUG}
while exitProc<>nil Do
Begin
InOutRes:=0;
current_exit:=tProcedure(exitProc);
exitProc:=nil;
current_exit();
End;
{ Finalize units }
FinalizeUnits;
{$ifdef FPC_HAS_FEATURE_CONSOLEIO}
{ Show runtime error and exit }
pstdout:=@stdout;
If erroraddr<>nil Then
Begin
Writeln(pstdout^,'Runtime error ',Errorcode,' at $',hexstr(erroraddr));
{ to get a nice symify }
Writeln(pstdout^,BackTraceStrFunc(Erroraddr));
dump_stack(pstdout^,ErrorBase);
Writeln(pstdout^,'');
End;
{ Make sure that all output is written to the redirected file }
Flush(Output);
Flush(ErrOutput);
Flush(pstdout^);
Flush(StdErr);
{$endif FPC_HAS_FEATURE_CONSOLEIO}
{$if defined(MSWINDOWS) or defined(OS2)}
{ finally release the heap if possible, especially
important for DLLs }
for i:=0 to argc do
sysfreemem(argv[i]);
sysfreemem(argv);
{$endif}
{$ifdef LINUX}
{sysfreemem already checks for nil}
sysfreemem(calculated_cmdline);
{$endif}
{$ifdef BSD}
sysfreemem(cmdline);
{$endif}
{$ifdef FPC_HAS_FEATURE_HEAP}
{$if not (defined(HAS_MEMORYMANAGER) or defined(HAS_MT_MEMORYMANAGER))}
FinalizeHeap;
{$endif HAS_MEMORYMANAGER}
{$endif FPC_HAS_FEATURE_HEAP}
End;
Procedure do_exit;[Public,Alias:'FPC_DO_EXIT'];
begin
InternalExit;
System_exit;
end;
Procedure lib_exit;[Public,Alias:'FPC_LIB_EXIT'];
begin
InternalExit;
end;
Procedure Halt(ErrNum: Byte);
Begin
ExitCode:=Errnum;
Do_Exit;
end;
function SysBackTraceStr (Addr: Pointer): ShortString;
begin
SysBackTraceStr:=' $'+hexstr(addr);
end;
Procedure HandleErrorAddrFrame (Errno : longint;addr,frame : Pointer);[public,alias:'FPC_BREAK_ERROR'];
begin
If pointer(ErrorProc)<>Nil then
ErrorProc(Errno,addr,frame);
errorcode:=word(Errno);
erroraddr:=addr;
errorbase:=frame;
{$ifdef FPC_HAS_FEATURE_EXCEPTIONS}
if ExceptAddrStack <> nil then
raise TObject(nil) at addr,frame;
{$endif FPC_HAS_FEATURE_EXCEPTIONS}
{$ifdef FPC_HAS_FEATURE_EXITCODE}
if errorcode <= maxExitCode then
halt(errorcode)
else
halt(255)
{$else FPC_HAS_FEATURE_EXITCODE}
halt;
{$endif FPC_HAS_FEATURE_EXITCODE}
end;
Procedure HandleErrorFrame (Errno : longint;frame : Pointer);
{
Procedure to handle internal errors, i.e. not user-invoked errors
Internal function should ALWAYS call HandleError instead of RunError.
Can be used for exception handlers to specify the frame
}
begin
HandleErrorAddrFrame(Errno,get_caller_addr(frame),get_caller_frame(frame));
end;
Procedure HandleError (Errno : longint);[public,alias : 'FPC_HANDLEERROR'];
{
Procedure to handle internal errors, i.e. not user-invoked errors
Internal function should ALWAYS call HandleError instead of RunError.
}
begin
HandleErrorFrame(Errno,get_frame);
end;
procedure RunError(w : word);[alias: 'FPC_RUNERROR'];
begin
errorcode:=w;
erroraddr:=get_caller_addr(get_frame);
errorbase:=get_caller_frame(get_frame);
{$ifdef FPC_HAS_FEATURE_EXITCODE}
if errorcode <= maxExitCode then
halt(errorcode)
else
halt(255)
{$else FPC_HAS_FEATURE_EXITCODE}
halt;
{$endif FPC_HAS_FEATURE_EXITCODE}
end;
Procedure RunError;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
RunError (0);
End;
Procedure Halt;{$ifdef SYSTEMINLINE}inline;{$endif}
Begin
Halt(0);
End;
Procedure Error(RunTimeError : TRunTimeError);
begin
RunError(RuntimeErrorExitCodes[RunTimeError]);
end;
{$ifdef FPC_HAS_FEATURE_FILEIO}
function do_isdevice(handle:thandle):boolean;forward;
{$endif FPC_HAS_FEATURE_FILEIO}
{$ifdef FPC_HAS_FEATURE_CONSOLEIO}
Procedure dump_stack(var f : text;bp : Pointer);
var
i : Longint;
prevbp : Pointer;
is_dev : boolean;
caller_frame,
caller_addr : Pointer;
Begin
{$ifdef FPC_HAS_FEATURE_EXCEPTIONS}
try
{$endif FPC_HAS_FEATURE_EXCEPTIONS}
prevbp:=bp-1;
i:=0;
is_dev:=do_isdevice(textrec(f).Handle);
while bp > prevbp Do
Begin
caller_addr := get_caller_addr(bp);
caller_frame := get_caller_frame(bp);
if (caller_addr=nil) then
break;
Writeln(f,BackTraceStrFunc(caller_addr));
if (caller_frame=nil) then
break;
Inc(i);
If ((i>max_frame_dump) and is_dev) or (i>256) Then
break;
prevbp:=bp;
bp:=caller_frame;
End;
{$ifdef FPC_HAS_FEATURE_EXCEPTIONS}
except
{ prevent endless dump if an exception occured }
end;
{$endif FPC_HAS_FEATURE_EXCEPTIONS}
End;
{$endif FPC_HAS_FEATURE_CONSOLEIO}
{$ifdef FPC_HAS_FEATURE_HEAP}
Type
PExitProcInfo = ^TExitProcInfo;
TExitProcInfo = Record
Next : PExitProcInfo;
SaveExit : Pointer;
Proc : TProcedure;
End;
const
ExitProcList: PExitProcInfo = nil;
Procedure DoExitProc;
var
P : PExitProcInfo;
Proc : TProcedure;
Begin
P:=ExitProcList;
ExitProcList:=P^.Next;
ExitProc:=P^.SaveExit;
Proc:=P^.Proc;
DisPose(P);
Proc();
End;
Procedure AddExitProc(Proc: TProcedure);
var
P : PExitProcInfo;
Begin
New(P);
P^.Next:=ExitProcList;
P^.SaveExit:=ExitProc;
P^.Proc:=Proc;
ExitProcList:=P;
ExitProc:=@DoExitProc;
End;
{$endif FPC_HAS_FEATURE_HEAP}
{$ifdef FPC_HAS_FEATURE_HEAP}
function ArrayStringToPPchar(const S:Array of AnsiString;reserveentries:Longint):ppchar; // const ?
// Extra allocate reserveentries pchar's at the beginning (default param=0 after 1.0.x ?)
// Note: for internal use by skilled programmers only
// if "s" goes out of scope in the parent procedure, the pointer is dangling.
var p : ppchar;
i : LongInt;
begin
if High(s)<Low(s) Then Exit(NIL);
Getmem(p,sizeof(pchar)*(high(s)-low(s)+ReserveEntries+2)); // one more for NIL, one more
// for cmd
if p=nil then
begin
{$ifdef xunix}
fpseterrno(ESysEnomem);
{$endif}
exit(NIL);
end;
for i:=low(s) to high(s) do
p[i+Reserveentries]:=pchar(s[i]);
p[high(s)+1+Reserveentries]:=nil;
ArrayStringToPPchar:=p;
end;
Function StringToPPChar(Var S:AnsiString;ReserveEntries:integer):ppchar;
{
Create a PPChar to structure of pchars which are the arguments specified
in the string S. Especially usefull for creating an ArgV for Exec-calls
}
begin
StringToPPChar:=StringToPPChar(PChar(S),ReserveEntries);
end;
Function StringToPPChar(S: PChar;ReserveEntries:integer):ppchar;
var
i,nr : longint;
Buf : ^char;
p : ppchar;
begin
buf:=s;
nr:=1;
while (buf^<>#0) do // count nr of args
begin
while (buf^ in [' ',#9,#10]) do // Kill separators.
inc(buf);
inc(nr);
if buf^='"' Then // quotes argument?
begin
inc(buf);
while not (buf^ in [#0,'"']) do // then end of argument is end of string or next quote
inc(buf);
if buf^='"' then // skip closing quote.
inc(buf);
end
else
begin // else std
while not (buf^ in [' ',#0,#9,#10]) do
inc(buf);
end;
end;
getmem(p,(ReserveEntries+nr)*sizeof(pchar));
StringToPPChar:=p;
if p=nil then
begin
{$ifdef xunix}
fpseterrno(ESysEnomem);
{$endif}
exit;
end;
for i:=1 to ReserveEntries do inc(p); // skip empty slots
buf:=s;
while (buf^<>#0) do
begin
while (buf^ in [' ',#9,#10]) do // Kill separators.
begin
buf^:=#0;
inc(buf);
end;
if buf^='"' Then // quotes argument?
begin
inc(buf);
p^:=buf;
inc(p);
p^:=nil;
while not (buf^ in [#0,'"']) do // then end of argument is end of string or next quote
inc(buf);
if buf^='"' then // skip closing quote.
begin
buf^:=#0;
inc(buf);
end;
end
else
begin
p^:=buf;
inc(p);
p^:=nil;
while not (buf^ in [' ',#0,#9,#10]) do
inc(buf);
end;
end;
end;
{$endif FPC_HAS_FEATURE_HEAP}
{*****************************************************************************
Abstract/Assert support.
*****************************************************************************}
procedure fpc_AbstractErrorIntern;compilerproc;[public,alias : 'FPC_ABSTRACTERROR'];
begin
If pointer(AbstractErrorProc)<>nil then
AbstractErrorProc();
HandleErrorFrame(211,get_frame);
end;
Procedure fpc_assert(Const Msg,FName:Shortstring;LineNo:Longint;ErrorAddr:Pointer); [Public,Alias : 'FPC_ASSERT']; compilerproc;
begin
if pointer(AssertErrorProc)<>nil then
AssertErrorProc(Msg,FName,LineNo,ErrorAddr)
else
HandleErrorFrame(227,get_frame);
end;
Procedure SysAssert(Const Msg,FName:Shortstring;LineNo:Longint;ErrorAddr:Pointer);
begin
{$ifdef FPC_HAS_FEATURE_CONSOLEIO}
If msg='' then
write(stderr,'Assertion failed')
else
write(stderr,msg);
Writeln(stderr,' (',FName,', line ',LineNo,').');
Writeln(stderr,'');
{$ifdef FPC_HAS_FEATURE_EXITCODE}
Halt(227);
{$else FPC_HAS_FEATURE_EXITCODE}
halt;
{$endif FPC_HAS_FEATURE_EXITCODE}
{$endif FPC_HAS_FEATURE_CONSOLEIO}
end;
{*****************************************************************************
SetJmp/LongJmp support.
*****************************************************************************}
{$i setjump.inc}
{$ifdef IOCheckWasOn}
{$I+}
{$endif}
{$ifdef RangeCheckWasOn}
{$R+}
{$endif}
{$ifdef OverflowCheckWasOn}
{$Q+}
{$endif}
{*****************************************************************************
OS dependent Helpers/Syscalls
*****************************************************************************}
{$i sysos.inc}
{*****************************************************************************
Heap
*****************************************************************************}
{$ifdef FPC_HAS_FEATURE_HEAP}
{$i sysheap.inc}
{$i heap.inc}
{$endif FPC_HAS_FEATURE_HEAP}
{*****************************************************************************
Thread support
*****************************************************************************}
{$ifdef FPC_HAS_FEATURE_THREADING}
{ Generic threadmanager }
{$i thread.inc}
{ Generic threadvar support }
{$i threadvr.inc}
{ OS Dependent implementation }
{$i systhrd.inc}
{$endif FPC_HAS_FEATURE_THREADING}
{*****************************************************************************
File Handling
*****************************************************************************}
{ OS dependent low level file functions }
{$ifdef FPC_HAS_FEATURE_FILEIO}
{$i sysfile.inc}
{$endif FPC_HAS_FEATURE_FILEIO}
{ Text file }
{$ifdef FPC_HAS_FEATURE_TEXTIO}
{$i text.inc}
{$endif FPC_HAS_FEATURE_TEXTIO}
{$ifdef FPC_HAS_FEATURE_FILEIO}
{ Untyped file }
{$i file.inc}
{ Typed file }
{$i typefile.inc}
{$endif FPC_HAS_FEATURE_FILEIO}
{*****************************************************************************
Directory Handling
*****************************************************************************}
{ OS dependent dir functions }
{$i sysdir.inc}
{*****************************************************************************
Resources support
*****************************************************************************}
{$ifndef HAS_RESOURCES}
{$i sysres.inc}
{$endif}
Function FindResource(ModuleHandle: HMODULE; ResourceName, ResourceType: AnsiString): TResourceHandle;
begin
Result:=FindResource(ModuleHandle,PChar(ResourceName),PChar(ResourceType));
end;
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