Re: [Qemu-devel] [RFC] Introduce module API to QEMU

[Anthony Liguori <aliguori@us.ibm.com>]

malc wrote:
> Once again ISO/IEC 9899:1990 4.1.2
>   

I don't see a 4.1.2...  Section 4 is "Conformance".

>            ISO/IEC 9899:1999 7.1.3
>   

At any rate, I assume you're referring to:

> +extern module_init_fn __start_initfuncs[], __stop_initfuncs[];
> +extern module_exit_fn __start_exitfuncs[], __stop_exitfuncs[];

All sections have variable definitions that define their start and stop 
that are in the form __start_SECTION and __stop_SECTION.  The 
__attribute__((section("initfuncs"), used)) directive adds a new section 
(if necessary) named initfuncs and the linker will create these 
variables.  If you look closely, the patch doesn't define these 
variables, it just declares them because they're defined by the linker.

So this is exactly the sort of thing that the standard is there to 
protect :-)

Regards,

Anthony Liguori