/// <summary>
/// Syscall handler
/// </summary>
/// <param name="regsPtr">Pointer to registers</param>
public static unsafe void Handler(RegsDirect *regsPtr)
{
int function = regsPtr->EAX;
if (function < 0 || function > Syscalls.SYSCALL_MAX)
{
Console.Write("[SYSCALL] Invalid syscall requested (");
Console.WriteNum(function);
Console.Write(" > ");
Console.WriteNum(Syscalls.SYSCALL_MAX);
Console.Write(")\n");
return;
}
#if PRINT_SYSCALLS
if (function != 0x0D && function != 0x09 && function != 0x16 && function != 0x4 && function != 0x5)
{
Console.Write("[SYSCALL] PID: ");
Console.WriteNum(Tasking.CurrentTask.PID);
Console.Write(" function: ");
Console.WriteNum(function);
Console.WriteLine("");
}
#endif
Tasking.CurrentTask.CurrentThread.Context.UpdateSyscallRegs(regsPtr);
int ret = 0;
switch (function)
{
case Syscalls.SYS_EXIT:
ret = Syscalls.Exit(regsPtr->EBX);
break;
case Syscalls.SYS_GETPID:
ret = Syscalls.GetPID();
break;
case Syscalls.SYS_SBRK:
ret = (int)Syscalls.Sbrk(regsPtr->EBX);
break;
case Syscalls.SYS_FORK:
ret = Syscalls.Fork();
break;
case Syscalls.SYS_WRITE:
ret = Syscalls.Write(regsPtr->EBX, Util.PtrToArray((byte *)regsPtr->ECX), (uint)regsPtr->EDX);
break;
case Syscalls.SYS_READ:
ret = Syscalls.Read(regsPtr->EBX, Util.PtrToArray((byte *)regsPtr->ECX), (uint)regsPtr->EDX);
break;
case Syscalls.SYS_OPEN:
ret = Syscalls.Open(Util.CharPtrToString((char *)regsPtr->EBX), regsPtr->ECX);
break;
case Syscalls.SYS_CLOSE:
ret = Syscalls.Close(regsPtr->EBX);
break;
case Syscalls.SYS_SEEK:
ret = Syscalls.Seek(regsPtr->EBX, regsPtr->ECX, (FileWhence)regsPtr->EDX);
break;
case Syscalls.SYS_FSTAT:
ret = -(int)Syscalls.FStat(regsPtr->EBX, (Stat *)regsPtr->ECX);
break;
case Syscalls.SYS_STAT:
ret = -(int)Syscalls.Stat(Util.CharPtrToString((char *)regsPtr->EBX), (Stat *)regsPtr->ECX);
break;
case Syscalls.SYS_EXECVE:
ret = Syscalls.Execve(Util.CharPtrToString((char *)regsPtr->EBX), Util.PtrToArray((char **)regsPtr->ECX), Util.PtrToArray((char **)regsPtr->EDX));
break;
case Syscalls.SYS_RUN:
ret = Syscalls.Run(Util.CharPtrToString((char *)regsPtr->EBX), Util.PtrToArray((char **)regsPtr->ECX), Util.PtrToArray((char **)regsPtr->EDX));
break;
case Syscalls.SYS_WAITPID:
ret = -(int)Syscalls.WaitPID(regsPtr->EBX, (int *)regsPtr->ECX, regsPtr->EDX);
break;
case Syscalls.SYS_READDIR:
ret = -(int)Syscalls.Readdir(regsPtr->EBX, (DirEntry *)regsPtr->ECX, (uint)regsPtr->EDX);
break;
case Syscalls.SYS_SHUTDOWN:
ret = -(int)Syscalls.Shutdown();
break;
case Syscalls.SYS_REBOOT:
ret = -(int)Syscalls.Reboot();
break;
case Syscalls.SYS_GETTIMEOFDAY:
ret = -(int)Syscalls.GetTimeOfDay((Time.Timeval *)regsPtr->EBX);
break;
case Syscalls.SYS_PIPE:
ret = -(int)Syscalls.Pipe((int *)regsPtr->EBX);
break;
case Syscalls.SYS_DUP2:
ret = Syscalls.Dup2(regsPtr->EBX, regsPtr->ECX);
break;
case Syscalls.SYS_SIG_SEND:
ret = -(int)Syscalls.SigSend(regsPtr->EBX, (Signal)regsPtr->ECX);
break;
case Syscalls.SYS_SETSIGHANDLER:
ret = -(int)Syscalls.SetSigHandler((Signal)regsPtr->EBX, (SignalAction.SigAction *)regsPtr->ECX, (SignalAction.SigAction *)regsPtr->EDX);
break;
case Syscalls.SYS_RETURN_FROM_SIGNAL:
Syscalls.ReturnFromSignal();
ret = 0;
break;
case Syscalls.SYS_GETCWD:
ret = -(int)Syscalls.GetCWD((char *)regsPtr->EBX, regsPtr->ECX);
break;
case Syscalls.SYS_CHDIR:
ret = -(int)Syscalls.ChDir(Util.CharPtrToString((char *)regsPtr->EBX));
break;
case Syscalls.SYS_SLEEP:
ret = (int)Syscalls.Sleep((uint)regsPtr->EBX, (uint)regsPtr->ECX);
break;
case Syscalls.SYS_TRUNCATE:
ret = Syscalls.Truncate(Util.CharPtrToString((char *)regsPtr->EBX), (uint)regsPtr->ECX);
break;
case Syscalls.SYS_FTRUNCATE:
ret = Syscalls.FTruncate(regsPtr->EBX, (uint)regsPtr->ECX);
break;
case Syscalls.SYS_DUP:
ret = Syscalls.Dup(regsPtr->EBX);
break;
case Syscalls.SYS_IOCTL:
ret = Syscalls.IOCtl(regsPtr->EBX, regsPtr->ECX, (void *)regsPtr->EDX);
break;
case Syscalls.SYS_MKDIR:
ret = Syscalls.MkDir(Util.CharPtrToString((char *)regsPtr->EBX), regsPtr->ECX);
break;
case Syscalls.SYS_RMDIR:
ret = Syscalls.RmDir(Util.CharPtrToString((char *)regsPtr->EBX));
break;
case Syscalls.SYS_UNLINK:
ret = Syscalls.Unlink(Util.CharPtrToString((char *)regsPtr->EBX));
break;
case Syscalls.SYS_MOUNT:
ret = Syscalls.Mount(Util.CharPtrToString((char *)regsPtr->EBX), Util.CharPtrToString((char *)regsPtr->ECX), Util.CharPtrToString((char *)regsPtr->EDX));
break;
case Syscalls.SYS_UMOUNT:
ret = Syscalls.Umount(Util.CharPtrToString((char *)regsPtr->EBX));
break;
default:
Console.Write("Unhandled syscall ");
Console.WriteNum(function);
Console.WriteLine("");
break;
}
Tasking.CurrentTask.CurrentThread.Context.SetSysReturnValue(ret);
}