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
opimm4

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>
x0000 RESERVED
xxxx1 B
xxx10 H
xx100 S
x1000 D
<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>
x0000 RESERVED
xxxx1 B
xxx10 H
xx100 S
x1000 D
<index>

Is the element index encoded in imm5:

imm5 <index>
x0000 RESERVED
xxxx1 UInt(imm5<4:1>)
xxx10 UInt(imm5<4:2>)
xx100 UInt(imm5<4:3>)
x1000 UInt(imm5<4>)

Operation

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

Operational information

If PSTATE.DIT is 1:


Internal version only: aarchmrs v2023-12_rel, pseudocode v2023-12_rel, sve v2023-12_rel ; Build timestamp: 2023-12-15T16:46

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