• How to understand ARMv8 'SEVL' instruction in spin-lock?
    hi experts,          ARMv7 spin-lock use 'WFE' instruction to wait for lock release and use 'SEV' in spin-unlock to notify all cores.        but ARMv8 use 'SEVL; WFE' instructions in spin-lock, and no...
  • ARMv8-A Instruction for Getting CPU Number
    Hi, I'm using a Juno r1 board and I'm trying to get processor's related CPU ID without using any header file like function sched_getcpu from sched.h . The reason is I want to get the CPU number for TrustZone...
  • Understanding ARM NEON instruction
    hi i am trying to understand ARM NEON instruction and encountered with vqrdmulh instruction. i am particularly interested in saturation case in instruction i am not getting any case with saturation ....
  • How to understand SDIV instruction availability?
    Hi, When I read Thumb-2 instruction manual, it is not clear to me about SDIV availability. Especially I do not understand the last line " are not available in ARM state." Could you explain it to me? Thanks...
  • Cryptography instructions sample for ARMv8
    hi, experts: I found ARMv8 supported some cryptography instructions. So: Is there any sample code demonstrating how to use these crypto instructions? best wishes,