20.136 REV32 (vector)

Reverse elements in 32-bit words (vector).

Syntax

REV32 Vd.T, Vn.T

Where:

Vd
Is the name of the SIMD and FP destination register.
T
Is an arrangement specifier, and can be one of 8B, 16B, 4H or 8H.
Vn
Is the name of the SIMD and FP source register.

Usage

Reverse elements in 32-bit words (vector). This instruction reverses the order of 8-bit or 16-bit elements in each word of the vector in the source SIMD and FP register, places the results into a vector, and writes the vector to the destination SIMD and FP register.

Depending on the settings in the CPACR_EL1, CPTR_EL2, and CPTR_EL3 registers, and the current Security state and Exception level, an attempt to execute the instruction might be trapped.

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