CPU Cycles Consumed by C program on PXA255

[Junaid Jamil]

				Hi,
I have run my C program on a board which have Intel PXA255
ARM processor. Now I want to know how much CPU cycles it consumed
during its execution. So I think I can do this by capturing the CPU
clocks at start of my program and capture again at the end of my
program. The difference in the cpu clocks is the total CPU cycles
consumed by my program. But how can I do this using some C or inline
(ARM)assembly code? 

I seen some of members are discussing this
on this forum that they count the CPU cycles consumed by C programs.
But I want you to help me writing this code. I do not have much idea
about ARM Assembly but can understand easily as I worked in Assembly
for x86.

By the way, I am using arm-linux-gcc 3.3.2 toolchain to build executables that I  run on my board.

Thanks
Junaid