11.53 MCRR and MCRR2

Move to Coprocessor from ARM Registers. Depending on the coprocessor, you might be able to specify various additional operations.


MCRR{cond} coproc, #opcode, Rt, Rt2, CRn

MCRR2{cond} coproc, #opcode, Rt, Rt2, CRn



is an optional condition code. In ARM code, cond is not permitted for MCRR2.


is the name of the coprocessor the instruction is for. The standard name is pn, where n is an integer in the range 0 to 15.


is a 4-bit coprocessor-specific opcode.

Rt, Rt2

are ARM source registers. Rt and Rt2 must not be PC.


is a coprocessor register.


The use of these instructions depends on the coprocessor. See the coprocessor documentation for details.


The MCRR ARM instruction is available in ARMv6 and above, and E variants of ARMv5T.

The MCRR2 ARM instruction is available in ARMv6 and above.

These 32-bit Thumb instructions are available in ARMv6T2 and above.

There are no 16-bit versions of these instructions in Thumb.

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