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MOV (from general)

Move general-purpose register to a vector element. This instruction copies the contents of the source general-purpose register to the specified vector element in the destination SIMD&FP register.

This instruction can insert data into individual elements within a SIMD&FP register without clearing the remaining bits to zero.

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 INS (general). This means:

  • The encodings in this description are named to match the encodings of INS (general).
  • The description of INS (general) gives the operational pseudocode for this instruction.

313029282726252423222120191817161514131211109876543210
01001110000imm5000111RnRd

Advanced SIMD

MOV <Vd>.<Ts>[<index>], <R><n>

is equivalent to

INS <Vd>.<Ts>[<index>], <R><n>

and is always the preferred disassembly.

Assembler Symbols

<Vd>

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

<Ts> Is an element size specifier, encoded in imm5:
imm5 <Ts>
x0000 RESERVED
xxxx1 B
xxx10 H
xx100 S
x1000 D
<index> Is the element index encoded in imm5:
imm5 <index>
x0000 RESERVED
xxxx1 imm5<4:1>
xxx10 imm5<4:2>
xx100 imm5<4:3>
x1000 imm5<4>
<R> Is the width specifier for the general-purpose source register, encoded in imm5:
imm5 <R>
x0000 RESERVED
xxxx1 W
xxx10 W
xx100 W
x1000 X
<n>

Is the number [0-30] of the general-purpose source register or ZR (31), encoded in the "Rn" field.

Operation

The description of INS (general) gives the operational pseudocode for this instruction.

Operational information

If PSTATE.DIT is 1:

  • The execution time of this instruction is independent of:
    • The values of the data supplied in any of its registers.
    • The values of the NZCV flags.
  • The response of this instruction to asynchronous exceptions does not vary based on:
    • The values of the data supplied in any of its registers.
    • The values of the NZCV flags.