Re: Absolute symbols in vmlinux_64.lds.S

From: Yinghai Lu
Date: Tue Mar 10 2009 - 01:33:43 EST


Jeremy Fitzhardinge wrote:
>
> Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
>
>> Jeremy Fitzhardinge wrote:
>>> Why does vmlinux_64.lds.S use absolute symbols for things like
>>> __bss_start/stop:
>>>
>>> __bss_start = .; /* BSS */
>>> .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
>>> *(.bss.page_aligned)
>>> *(.bss)
>>> }
>>> __bss_stop = .;
>>>
>>>
>>> vmlinux_32.lds.S puts __bss_start/stop into the .bss section itself. Is
>>> there some particular reason they need to be absolute symbols
>>> (relocation?).
>>>
>> they are the same.
>
> Do you mean it makes no difference?

Sure. System.map should tell the value after the building.

YH
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/