4.9.1. CDP and CDP2

Coprocessor data operations.

Syntax

op{cond} coproc, #opcode1, CRd, CRn, CRm{, #opcode2}

where:

op

is either CDP or CDP2.

cond

is an optional condition code (see Conditional execution). In ARM code, cond is not allowed for CDP2.

coproc

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.

opcode1

is a 4-bit coprocessor-specific opcode.

opcode2

is an optional 3-bit coprocessor-specific opcode.

CRd, CRn, CRm

are coprocessor registers.

Usage

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

Architectures

The CDP ARM instruction is available in all versions of the ARM architecture.

The CDP2 ARM instruction is available in ARMv5T and above.

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

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

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