11.26 CDP and CDP2

Coprocessor data operations.

Syntax

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

CDP2{cond} coproc, #opcode1, CRd, CRn, CRm{, #opcode2}

where:

cond

is an optional condition code. In ARM code, cond is not permitted 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 versions of these instructions in Thumb.

Non-ConfidentialPDF file icon PDF versionARM DUI0473M
Copyright © 2010-2016 ARM Limited or its affiliates. All rights reserved.