ARM Compiler toolchain Assembler Reference: VMOV (between an ARM register and a NEON scalar)

ARM Compiler toolchain Assembler Reference

Version 5.0

Home > NEON and VFP Programming > Instructions shared by NEON and VFP > VMOV (between an ARM register and a NEON scalar)

VMOV (between an ARM register and a NEON scalar)

Transfer contents between an ARM register and a NEON scalar.

Syntax

VMOV{cond}{.size} Dn[x], Rd

VMOV{cond}{.datatype} Rd, Dn[x]

where:

cond: is an optional condition code.
size: the data size. Can be 8, 16, or 32. If omitted, size is 32. For VFP instructions, size must be 32 or omitted.
datatype: the data type. Can be U8, S8, U16, S16, or 32. If omitted, datatype is 32. For VFP instructions, datatype must be 32 or omitted.
Dn[x]: is the NEON scalar.
Rd: is the ARM register. Rd must not be PC.

Usage

VMOV Rd, Dn[x] transfers the contents of Dn[x] into the least significant byte, halfword, or word of Rd. The remaining bits of Rd are either zero or sign extended.

VMOV Dn[x], Rd transfers the contents of the least significant byte, halfword, or word of Rd into Sn.

See also

Concepts

Using the Assembler:

NEON scalars.

Reference:

Condition codes.

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