Hi Marcos (2025.09.02_14:35:01_+0000)
They do not, however, support ENDBR32 which was introduced in 2020, twenty-five years after the introduction of the original i686 (https://www.intel.com/content/www/us/en/developer/articles/technical/technical-look-control-flow-enforcement-technology.html).
It seems that the intention of the new instruction was to be interpreted as a NOP on older hardware, but that obviously didn't happen on these non-Intel CPUs.
Stefano -- Stefano Rivera