Re: [Xen-devel] [PATCH] fix of vmxassist.ld

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 14/8/06 7:56 am, "Yang, Xiaowei" <xiaowei.yang@xxxxxxxxx> wrote:

> Currently there's one bug in tools/firmware/vmxassist/vmxassist.ld. It
> intends to put all uninitialized globe variables in object files into
> between _bbss and _ebss. In head.S, it sets memory between _bbss and
> _ebss to 0. But for gcc, compiler will put uninitialized globe variables
> (e.g: int a;) into a section called COMMON, rather than .bss, and linker
> collects variables in COMMON section of all objects and puts them in
> .bss. So it results in uninitialized globe variables are behind _ebss,
> rather than in front of it, which will not be set to 0. This patch fixes
> it.

Usual way around this is to define the start/end labels outside the
.section{} region. This is what the Xen and Linux linker scripts do, so it's
the fix I checked in for this issue.

 -- Keir



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel