freepascal.compiler/rtl/solaris/system.pp

{
    This file is part of the Free Pascal run time library.
    Copyright (c) 1999-2000 by the Free Pascal development team.

    Solaris system unit

    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.

 **********************************************************************}
unit System;

interface

{$define FPC_IS_SYSTEM}

{$linklib m}

{ include system-independent routine headers }

{$I sysunixh.inc}

var argc:longint;
    argv:PPchar;
    envp:PPchar;


implementation

{ OS independant parts}

{$I system.inc}

{*****************************************************************************
                       Misc. System Dependent Functions
*****************************************************************************}

{$i start.inc}

procedure System_exit;
begin
   Fpexit(cint(ExitCode));
End;


Function ParamCount: Longint;
Begin
  Paramcount:=argc-1
End;


function BackPos(c:char; const s: shortstring): integer;
var
 i: integer;
Begin
  for i:=length(s) downto 0 do
    if s[i] = c then break;
  if i=0 then
    BackPos := 0
  else
    BackPos := i;
end;


 { variable where full path and filename and executable is stored }
 { is setup by the startup of the system unit.                    }
var
 execpathstr : shortstring;

function paramstr(l: longint) : string;
 var
  s: string;
  s1: string;
 begin
   { stricly conforming POSIX applications  }
   { have the executing filename as argv[0] }
//   if l=0 then
//     begin
//       paramstr := execpathstr;
//     end
//   else
     if (l < argc) then
       paramstr:=strpas(argv[l])
     else
       paramstr:='';
 end;

Procedure Randomize;
Begin
  randseed:=longint(Fptime(nil));
End;


{*****************************************************************************
                         SystemUnit Initialization
*****************************************************************************}

function  reenable_signal(sig : longint) : boolean;
var
  e,oe : TSigSet;
  i,j : byte;
  olderrno: cint;
begin
  fillchar(e,sizeof(e),#0);
  fillchar(oe,sizeof(oe),#0);
  { set is 1 based PM }
  dec(sig);
  i:=sig mod 32;
  j:=sig div 32;
  e[j]:=1 shl i;
  { this routine is called from a signal handler, so must not change errno }
  olderrno:=geterrno;
  fpsigprocmask(SIG_UNBLOCK,@e,@oe);
  reenable_signal:=geterrno=0;
  seterrno(olderrno);
end;

{$i sighnd.inc}

var
  act: SigActionRec;

Procedure InstallSignals;
var
  oldact: SigActionRec;
begin
  { Initialize the sigaction structure }
  { all flags and information set to zero }
  FillChar(act, sizeof(SigActionRec),0);
  { initialize handler                    }
  act.sa_handler :=@SignalToRunError;
  act.sa_flags:=SA_SIGINFO;
  FpSigAction(SIGFPE,act,oldact);
  FpSigAction(SIGSEGV,act,oldact);
  FpSigAction(SIGBUS,act,oldact);
  FpSigAction(SIGILL,act,oldact);
end;


procedure SetupCmdLine;
var
  bufsize,
  len,j,
  size,i : longint;
  found  : boolean;
  buf    : pchar;

  procedure AddBuf;
  begin
    reallocmem(cmdline,size+bufsize);
    move(buf^,cmdline[size],bufsize);
    inc(size,bufsize);
    bufsize:=0;
  end;

begin
  GetMem(buf,ARG_MAX);
  size:=0;
  bufsize:=0;
  i:=0;
  while (i<argc) do
   begin
     len:=strlen(argv[i]);
     if len>ARG_MAX-2 then
      len:=ARG_MAX-2;
     found:=false;
     for j:=1 to len do
      if argv[i][j]=' ' then
       begin
         found:=true;
         break;
       end;
     if bufsize+len>=ARG_MAX-2 then
      AddBuf;
     if found then
      begin
        buf[bufsize]:='"';
        inc(bufsize);
      end;
     move(argv[i]^,buf[bufsize],len);
     inc(bufsize,len);
     if found then
      begin
        buf[bufsize]:='"';
        inc(bufsize);
      end;
     if i<argc then
      buf[bufsize]:=' '
     else
      buf[bufsize]:=#0;
     inc(bufsize);
     inc(i);
   end;
  AddBuf;
  FreeMem(buf,ARG_MAX);
end;


procedure SysInitStdIO;
begin
  OpenStdIO(Input,fmInput,StdInputHandle);
  OpenStdIO(Output,fmOutput,StdOutputHandle);
  OpenStdIO(ErrOutput,fmOutput,StdErrorHandle);
  OpenStdIO(StdOut,fmOutput,StdOutputHandle);
  OpenStdIO(StdErr,fmOutput,StdErrorHandle);
end;


function GetProcessID: SizeUInt;
begin
 GetProcessID := SizeUInt (fpGetPID);
end;

function CheckInitialStkLen(stklen : SizeUInt) : SizeUInt;
begin
  result := stklen;
end;

Begin
  IsConsole := TRUE;
  StackLength := CheckInitialStkLen(InitialStkLen);
  StackBottom := Sptr - StackLength;
{ Set up signals handlers }
  InstallSignals;
{ Setup heap }
  InitHeap;
  SysInitExceptions;
{ Setup stdin, stdout and stderr }
  SysInitStdIO;
{ Reset IO Error }
  InOutRes:=0;
{ Arguments }
  SetupCmdLine;
  InitSystemThreads;
  initvariantmanager;
{$ifdef VER2_2}
  initwidestringmanager;
{$else VER2_2}
  initunicodestringmanager;
{$endif VER2_2}
End.