[ros-dev] runtime time function question in freeldr

[pay7n at o2.pl]

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
> 
> 
>       
> 
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