For Armv8-M, is there a system register indicating the security state of the core?

Arm® TrustZone Technology for the Armv8-M Architecture mentioned:

In a simplified view, the program address determines the security state of the processor, which can be either Secure or Non-secure.
• If the processor is running program code in Non-secure memory, the processor is in Non-secure state.
• If the processor is running program code in Secure memory, the processor is in Secure state.
• If the processor is in Secure state, it must fetch instructions from Secure memory.

Is there a system register indicating the security state of the core?

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