Measuring function time / cycle counter on MPC5748G

nimrodzarmi — Mon, 12 Feb 2018 09:45:44 GMT

I am trying to implement an API to accurately measure code samples running times.

I did a similar thing on an ARM Cortex M4 core, using a cycle counter register.

I cannot find a similar register in e200z4 core.
I've read about people using the decrementer register as a cycle counter.

I tried accessing this register using ASM_KEYWORD (Diab compiler), but it didn't assemble.

I then read the MPG5748G does not have a decrementer register, even though it has 2 e200z4 cores?
MPC5748G with OS tick lower than 1ms (100us) - ChibiOS Free Embedded RTOS

What is the formal solution for cycle counting on this chip?

topic Measuring function time / cycle counter on MPC5748G in MPC5xxx