freepascal.compiler/rtl/netbsd/i386/sighnd.inc

{  
   $Id$
   This file is part of the Free Pascal run time library.
   (c) 2000-2003 by Marco van de Voort
   member of the Free Pascal development team.

   See the file COPYING.FPC, included in this distribution,
   for details about the copyright.

   Signalhandler for FreeBSD/i386

   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.
}

CONST FPU_ALL=$7F;

function getfpustate(const Sigcontext:sigcontextRec):longint; {inline;}
begin
  getfpustate:=0;
end;
procedure SignalToRunerror(Sig: longint;code:longint; var SigContext: SigContextRec); cdecl;

var
  res,fpustate : word;
begin
  res:=0;
{$ifdef BSD}
{$ifdef cpui386}
  fpustate:=0;
  asm
    fnstsw fpustate
  end;
{$endif cpui386}
{$endif BSD}
  case sig of
    SIGFPE :
          begin
    { this is not allways necessary but I don't know yet
      how to tell if it is or not PM }
          res:=200;
          fpustate:=GetFPUState(SigContext);

          if (FpuState and FPU_All) <> 0 then
            begin
              { first check the more precise options }
              if (FpuState and FPU_DivisionByZero)<>0 then
                res:=200
              else if (FpuState and FPU_Overflow)<>0 then
                res:=205
              else if (FpuState and FPU_Underflow)<>0 then
                res:=206
              else if (FpuState and FPU_Denormal)<>0 then
                res:=216
              else if (FpuState and (FPU_StackOverflow or FPU_StackUnderflow))<>0 then
                res:=207
              else if (FpuState and FPU_Invalid)<>0 then
                res:=216
              else
                res:=207;  {'Coprocessor Error'}
            end;
          SysResetFPU;
        end;
    SIGILL,
    SIGBUS,
    SIGSEGV :
        res:=216;
  end;
  reenable_signal(sig);
{ give runtime error at the position where the signal was raised }
  if res<>0 then
   begin
{$ifdef cpui386}
      HandleErrorAddrFrame(res,pointer(SigContext.sc_eip),pointer(SigContext.sc_ebp));
{$endif}
   end;
end;


{
  $Log$
  Revision 1.2  2004-03-04 13:10:32  olle
    + added comment to ETXTBSY
    * changed i386 -> cpui386, m68k -> cpum68k

  Revision 1.1  2004/01/04 15:30:19  marco
   * working version

  Revision 1.1  2004/01/03 12:29:36  marco
   * now separately.

}