Le mer 11/06/2003 à 20:45, Muli Ben-Yehuda a écrit :
> On Wed, Jun 11, 2003 at 11:11:02AM +0200, chgans@tuxfamily.org wrote:
>
> > But how does the compiler know that this call is to be done with "asmlinkage"
> > (regparm(...)) technique?
>
> This is a good question, that I've struggled with in the past. I don't
> have a definitive answer, but I can tell you two things:
>
> 1. Declaring the function pointer as asmlinkage causes some gcc
> versions to croak.
I use gcc-2.96 on redhat 7.2, and i'vent any problem since now
>
> 2. The compiler empirically always does the right thing. This *might* be
> because passing parameters in registers is an optimization, and the
> compiler will not optimize function calls through a function pointer.
>
> If you find a definitive answer, I'd like to know.
nothing definitive.....
with
struct {
int my_var;
/**** asmlinkage at the end ****/
void (*my_function)(void) asmlinkage;
} my_struct;
this way i have the correct behavour, but as all the function i use this
way have no args, i don't see differrence with or without asmlinkage in
the struct.
thanks.
christian
>
> Thanks,
> muli.
--
Gagneraud Christian <chgans@tuxfamily.org>
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