Hi,
I have a program that invokes system calls in a manner different from
what Linux expects. The arguments for the system call are stored on
the user-stack (just like arguments for a normal function call), not
on the registers. After the system call is invoked (through an
interrupt, not 0x80, but a different number) - what must I do in my
interrupt handler to access the arguments that were put on the user
stack?
As I understand, the moment an interrupt is invoked, we are in kernel-
mode. There are a few macros like __get_user_X that can be used to
copy data from user-space, but how do I find the addresses of the
arguments on the stack? Note that the initial code for the interrupt
handler has to be assembly.
Thanks in advance.
Cheers,
Anant
--
To unsubscribe from this list: send an email with
"unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx
Please read the FAQ at http://kernelnewbies.org/FAQ
