Public bug reported: I've noticed that qemu-arm for cortex-M considers vmrs apsr_nzcv, fpscr as an illegal instruction.
In this case, rt==15 means APSR, and the instruction should be accepted and executed like for A-profile. I posted a small patch: https://lists.gnu.org/archive/html/qemu-devel/2019-10/msg06978.html ** Affects: qemu Importance: Undecided Status: New -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1849879 Title: qemu-arm should accept vmrs apsr_nzcv, fpscr on M-profile Status in QEMU: New Bug description: I've noticed that qemu-arm for cortex-M considers vmrs apsr_nzcv, fpscr as an illegal instruction. In this case, rt==15 means APSR, and the instruction should be accepted and executed like for A-profile. I posted a small patch: https://lists.gnu.org/archive/html/qemu-devel/2019-10/msg06978.html To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1849879/+subscriptions