On Sun, Apr 19, 2015 at 9:51 PM, nick <xerofoify@xxxxxxxxx> wrote:
Greetings All,
I am wondering what the below code in the asm modifier does:
static inline void set_bit(int nr, void *addr)
{
asm("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr));
}
This would be very helpful as I am new to x86 assembly and don't
even known what register(s)/instruction(s) this touches and therefore this
is impossible for me to look up in the Intel Manuals. If someone either
tells me the registers/instructions this uses or explains the code that
would be very helpful.
Nick
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@xxxxxxxxxxxxxxxxx
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
get a book on i86 assembly and learn it.
--
Thank you
Warm Regards
Anuz
Warm Regards
Anuz
_______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
