What is the PMU counter resolution when the processor switches between 64-bit and 32-bit mode?

Hi experts, The PMU counter value is mentioned as 64 bit in ARMV8 manual. What is the PMU counter resolution when the processor switches between 64 bit and 32 bit mode
What is the PMU counter resolution when the processor switches between 64-bit and 32-bit mode?

Hi experts, The PMU counter value is mentioned as 64 bit in ARMV8 manual. What is the PMU counter resolution when the processor switches between 64 bit and 32 bit mode
Getting Execution Time of progams on armv8_64-bit processors

I have written a library for ARMv8-A 64 bit processors (OS- linaro debian). Now I want to time them. I am utilising gcc compiler and on Intel processors I was timing the execution utilising std::chrono...
Getting Execution Time of progams on armv8_64-bit processors

I have written a library for ARMv8-A 64 bit processors (OS- linaro debian). Now I want to time them. I am utilising gcc compiler and on Intel processors I was timing the execution utilising std::chrono...
bit addressing

are 8051 derivatives bit addressable on the ports like PICs are? if so how do you write this in c? if i waned to address P1.4 would i write P1=P1|0x10 or am i way off the mark?