• How many clock cycles do SVC/PUSH/POP/SRS/RFE insturctions take to execute on Cortex-A8 processor?
    I'm trying to count the cycle timing of my program in hand. I read the ARM Cortex-A8 R3P1 Technical Reference Manual: Chapter 16. Instruction Cycle Timing, but I couldn't find the cycle timings of SVC...
  • How many cycles requires the instruction QBNE?
    QBNE (Quick branch not equal) Using the PRU in the Beaglebone black (AM335x 1GHz ARM® Cortex-A8) I am asking how many cycles requires the instruction QBNE? qbeq myLabel, r1, 0 I suppose two if the comparison...
  • ARM v8 PMU Cycle counter
    All, When I am using the cycle counter in AArch64, I am not getting cycles properly. I have enabled read of pmccntr_el0 in user space using a small kernel module. I have sample code like: asm volatile...
  • why does LDR takes two cycle to be executed
    Hello everyone, I am currently working on a cortex-M0 microprocessor(LPC1114). I have looked through all the possible instruction descriptions but I did not find anyone of them explaining why some instructions...
  • How many clock cycles does a"for" loop take?
    Hello, I work with cortex M3-Microcontroller (LPC1768) and I want to know how much clock has a loop (for) for(i=0;i<1;i++); Thanks