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-qemu-system-arm hangs when attempting to enable MMU on Cortex-A7
-Description of problem:
-QEMU 9.x.x+ hangs when attempting to do enable the MMU from SCTLRL - M bit: https://developer.arm.com/documentation/ddi0601/2025-03/AArch32-Registers/SCTLR--System-Control-Register
-
-The instruction that hangs is the writing of the SCTLR register:
-
-```
-mrc     p15, 0, r0, c1, c0, 0
-orr     r0, r0, 1
-mcr     p15, 0, r0, c1, c0, 0
-```
-
-I am attempting to enable unaligned accesses and SCTLR-A bit doesn't seem to have any effect if the SCTLR-M is not enabled. Doing an unaligned access on cortex-a7 should be supported but it always trigger a Fault.
-Steps to reproduce:
-1. add the mrc/orr/mcr instruction sequence in the ResetHandler
-2. link the elf
-3. attempt to execute it
-Additional information:
-The unaligned access looked like it was working in QEMU 8.x.x but it might not have been emulated(?). I also am facing the same issues with MCR hanging and unaligned access not supported with latest 10.0.0-RC2.
-
-When it hangs, QEMU has to be killed and terminal reset.
-
-There might be two separate issues here:
-
-1. writing SCTLR register
-2. emulated cortex-a7 not supporting unaligned access (hardware supports it)