This also comes with a performance bump due to inlining of reg_read/reg_write (as they're only called once now) and the unlikely() on CHECK_REG_TYPE.
code under arm/ is from arm-softmmu/target/arm/*.inc.c code under aarch64/ is from aarch64-softmmu/target/aarch64/*.inc.c WARNING: these code are autogen from scripts/decodetree.py, DO NOT modify them.