Re: can somebody explain file boot/i386/pc/boot.S

[Barry Jackson]

On 13/10/10 18:41, Dennis Cao wrote:
> HI guys,
> I am really interested in grub. So i dig into the source code a bit. I
> find that the boot program is written in AT&T assembly. I am not
> familiar with this language. 

Neither am I - just a user.

Can somebody explain what these lines
> means?
> 
> -----------------------------------------------------------------------------------
> 
>       jmp     LOCAL(after_BPB)

jump instruction - tells program control to jump to the address
referenced by the label LOCAL

>       nop     /* do I care about this ??? */

nop is a no operation instruction - does nothing other than take up a
processor cycle.
> 
> ----------------------------------------------------------------------------------
> 
> Thanks:)
> 
> ---------------------------------
> 曹贵林 ( Dennis Cao )
> 
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Beyond that I cannot help,

Barry