ISA_v83A_A64_xml_00bet6.1 (old)htmldiff from-ISA_v83A_A64_xml_00bet6.1(new) ISA_v84A_A64_xml_00bet7

MOV (scalar)

Move vector element to scalar. This instruction duplicates the specified vector element in the SIMD&FP source register into a scalar, and writes the result to the SIMD&FP destination 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.

This is an alias of DUP (element). This means:

313029282726252423222120191817161514131211109876543210
01011110000imm5000001RnRd

Scalar

MOV <V><d>, <Vn>.<T>[<index>]

is equivalent to

DUP <V><d>, <Vn>.<T>[<index>]

and is always the preferred disassembly.

Assembler Symbols

<V> Is the destination width specifier, encoded in imm5:
imm5<V>
x0000RESERVED
xxxx1B
xxx10H
xx100S
x1000D
Is the destination width specifier, encoded in imm5:
imm5<V>
x0000RESERVED
xxxx1B
xxx10H
xx100S
x1000D
<d>

Is the number of the SIMD&FP destination register, encoded in the "Rd" field.

<Vn>

Is the name of the SIMD&FP source register, encoded in the "Rn" field.

<T> Is the element width specifier, encoded in imm5:
imm5<T>
x0000RESERVED
xxxx1B
xxx10H
xx100S
x1000D
Is the element width specifier, encoded in imm5:
imm5<T>
x0000RESERVED
xxxx1B
xxx10H
xx100S
x1000D
<index> Is the element index encoded in imm5:
imm5<index>
x0000RESERVED
xxxx1imm5<4:1>
xxx10imm5<4:2>
xx100imm5<4:3>
x1000imm5<4>
Is the element index encoded in imm5:
imm5<index>
x0000RESERVED
xxxx1imm5<4:1>
xxx10imm5<4:2>
xx100imm5<4:3>
x1000imm5<4>

Operation

The description of DUP (element) gives the operational pseudocode for this instruction.

Operational information

If PSTATE.DIT is 1:


Internal version only: isa v29.05v27.02, AdvSIMD v26.0, pseudocode v35.3v34.2.2 ; Build timestamp: 2018-06-16T092018-03-28T19:4555

Copyright © 2010-2018 ARM Limited or its affiliates. All rights reserved. This document is Non-Confidential.

ISA_v83A_A64_xml_00bet6.1 (old)htmldiff from-ISA_v83A_A64_xml_00bet6.1(new) ISA_v84A_A64_xml_00bet7