Re: [ros-dev] runtime time function question in freeldr

[Zhang Fan]

Thank you for your answer. But I'm still perplexd.
   pushl    %eax  //at that time ,%eax=0? so BootMain will receive NULL parameter?
   call    _BootMain

--- On Wed, 5/20/09, pay7n(a)o2.pl <pay7n(a)o2.pl> wrote:

>   From: pay7n(a)o2.pl <pay7n(a)o2.pl>
>  Subject: Re: [ros-dev] runtime time function question in freeldr
>  To: "ReactOS Development List" <ros-dev(a)reactos.org>
>  Date: Wednesday, May 20, 2009, 3:18 AM
>  This is not an Intel syntax.
>  Operands in memory operations have inverted order:
>  
>  mov src, dest
>  
>  not
>  
>  mov dest, src
>  
>  thus eax == 0
>  
>  
>  Zhang Fan pisze:
> >   Hi everybody,
> >  I'm a newbie of ReactOS, and I've just looked a piece 
>  of code in freeldr
> module. I found some runtime function
>  such as strstr(). I want to know if the run time lib should
>  be initialized, and where the initialized code.
> >   Another question is that a piece of code in
> > arch.S
> >  
> >  
> >  EXTERN(RealEntryPoint)
> >  
> >  //....
> >      .code32
> >  
> >      /* Zero BootDrive and BootPartition 
>  */
> >       xorl    %eax,%eax
> >      movl    
>  %eax,(_BootDrive)
> >       movl    
>  %eax,(_BootPartition)
> >   
> >      /* Store the boot drive */
> >      movb    
>  %dl,(_BootDrive)
> >   
> >      /* Store the boot partition */
> >      movb    
>  %dh,(_BootPartition)
> >   
> >      /* GO! */
> >      pushl    %eax
> >      call    _BootMain
> >  
> >  At there, I think %eax should equal zero, and BootMain 
>  will call
> CmdLineParse(),and CmdLineParse will call
>  strstr(). So it cause strstr will receive a NULL parameter.
>  Is it right?
> >   
> >  Thank you.
> >  
> >  Fan Zhang
> >  
> >  
> >        
> >  
> >  _______________________________________________
> >  Ros-dev mailing list
> >  Ros-dev(a)reactos.org
> >  http://www.reactos.org/mailman/listinfo/ros-dev
> >   
>  
>  _______________________________________________
>  Ros-dev mailing list
>  Ros-dev(a)reactos.org
>  http://www.reactos.org/mailman/listinfo/ros-dev
>