• NEON-Advanced SIMD vs. SIMD
    Hello, I’m new to ARM architecture and was looking to get a better understanding of how it works. Most notably, the Cortex-A series and its DSP functionality. When reading through ARM’s webpage, it often...
  • NEON SIMD Register Diagram
    Hello, I’m new to ARM architecture and was looking to get a better understanding of how it works. Most notably, the Cortex-A series and its DSP functionality. When looking through the NEON SIMD page on...
  • SIMD-NEON Optimization on CortexA7or Cortex A57
    Hi, we are experiencing poor performance on Small functions translated to SIMD NEON because of likely latency.I found a guide on http://infocenter.arm.com/help/topic/com.arm.doc.uan0015b/Cortex_A57_Software_Optimization_Guide_external...
  • Secure world memory access with MMU disabled
    Hi, I am a newbie to the TrustZone architecture. I learned that, in secure world, whether a memory access is secure or not is determined by the NS field in the translation descriptor and, in non-secure...
  • Interrupts from the secure world to the non-secure world.
    Hello experts, I am using SAM L11 (Core is Cortex-M23). I did a simple test of the interrupt. In the case of the handler was the secure world, it worked as I expected. The instruction sequences are...