• 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...
  • float behaivior on AARCH64
    Hello, forgive me if my question is a litte bit weak in content and linguistic. I'm only a Hobbyist and english is not my nativ. I'm trying to compile an App from Einstein@Home for AARCH64 using GCC....
  • luajit compilation on aarch64
    Hi, I am trying to build luajit on aarch64 platform. I have downloaded source from https://github.com/cbaylis/luajit-aarch64 . I am getting the below error when I compilled the source. root@node...
  • New developer guides for AArch64
    We (Arm's Support and Content Services teams) have been working on creating a Developer Guide for AArch64. They're aimed at anyone wanting a bare-metal focused introduction to the Armv8-A architecture...
  • Correct usage of the NSTable bit in aarch64/armv7a LPAE
    I'm porting our armv7a-short descriptor OS to LPAE and aarch64. In the short descriptor MMU, the "NS" bit can only be found in the first level of the MMU (I'll call it the SECTION level), meaning that...