13.70 MSR (general-purpose register to system coprocessor register)

Move to system coprocessor register from general-purpose register.


MSR{cond} coproc_register, Rn


is an optional condition code.
is the name of the coprocessor register.
is the general-purpose register. Rn must not be PC.


You can use this pseudo-instruction to write to any CP14 or CP15 coprocessor writable register. A complete list of the applicable coprocessor register names is in the Arm® Architecture Reference Manual. For example:

    MSR SCTLR, R1 ; writes the contents of R1 into the CP15
                  ;  coprocessor register SCTLR


This pseudo-instruction is available in A32 and T32.

This pseudo-instruction is available in Armv7‑A and Armv7‑R in A32 and 32-bit T32 code.

There is no 16-bit version of this pseudo-instruction in T32.

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