Re: Doubts in fast system call

[Devendra <devendra.sm@xxxxxxxxx>]

you can make out whether your libc uses int80 or sysenter by looking at assembly 
code of any of the system call wrapper . 

thanks

Devendra

On Wed, Apr 28, 2010 at 10:44 PM, Balachandar <bala1486@xxxxxxxxx> wrote:

Hello All,

    My problem is i want to find a fast way to switch from user mode to kernel mode. I read about the sysenter instructions on the net. I want to know a method to find whether my OS uses sysenter or software interrupt method (int 0x80). Can anybody please help me in finding this? Also i would really appreciate if you can suggest any other fast way to change from user to kernel mode... Thank you...

Thanks,

Bala