Hi,


On Sun, Jan 13, 2013 at 8:50 PM, horseriver <horserivers@gmail.com> wrote:
On Sun, Jan 13, 2013 at 09:27:45PM -0800, Dave Hylands wrote:
> Hi,
>
> On Sun, Jan 13, 2013 at 11:29 AM, horseriver <horserivers@gmail.com> wrote:
> >
> > hi:
> >
> >   In kernel code . some function is defined  by
>  __attribute__((__section__(".initcall" level ".init")))
> >
> >   what does this do ?
>
> It puts the address of the function in a linker section named
> .initcallX.init where X is replaced by the level.
>
> These functions are called in order to initialize various subsystems and
> drivers during kernel bootup.

  Thanks!

  Another question:

  __attribute__((regparm(3)))    ;  what does this do ?


It causes the compiler to pass the argument (3 in this case) to be passed in registers (like EAX, ECX and EDX) instead of stack. 

Thanks,
Ramesh
 



> --
> Dave Hylands
> Shuswap, BC, Canada
> http://www.davehylands.com

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