ARM VERSION 1.2 - Manual (Page 173)

ARM Instruction Reference
ARM DUI 0068B Copyright © 2000, 2001 ARM Limited. All rights reserved. 4-63
4.7.1 CDP, CDP2
Coprocessor data operations.
Syntax
CDP{cond} coproc, opcode1, CRd, CRn, CRm{, opcode2}
CDP2 coproc, opcode1, CRd, CRn, CRm{, opcode2}
where:
cond is an optional condition code (see Conditional execution on
page 4-4).
coproc is the name of the coprocessor the instruction is for. The standard
name is
pn , where n is an integer in the range 0-15.
opcode1 is a coprocessor-specific opcode.
CRd, CRn, CRm are coprocessor registers.
opcode2 is an optional coprocessor-specific opcode.
Usage
The use of these instructions depends on the coprocessor. See the coprocessor
documentation for details.
Note
CDP2 is always unconditional.
Architectures
CDP is available in ARM architecture versions 2 and above.
CDP2 is available in ARM architecture versions 5 and above.