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MOV (to general)

Move vector element to general-purpose register. This instruction reads the unsigned integer from the source SIMD&FP register, zero-extends it to form a 32-bit or 64-bit value, and writes the result to the destination general-purpose 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 UMOV. This means:

  • The encodings in this description are named to match the encodings of UMOV.
  • The description of UMOV gives the operational pseudocode for this instruction.

313029282726252423222120191817161514131211109876543210
0Q001110000xxx00001111RnRd
imm5

32-bit (Q == 0 && imm5 == xx100)

MOV <Wd>, <Vn>.S[<index>]

is equivalent to

UMOV <Wd>, <Vn>.S[<index>]

and is always the preferred disassembly.

64-reg,UMOV-64-reg (Q == 1 && imm5 == x1000)

MOV <Xd>, <Vn>.D[<index>]

is equivalent to

UMOV <Xd>, <Vn>.D[<index>]

and is always the preferred disassembly.

Assembler Symbols

<Wd>

Is the 32-bit name of the general-purpose destination register, encoded in the "Rd" field.

<Xd>

Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" field.

<Vn>

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

<index>

For the 32-bit variant: is the element index encoded in "imm5<4:3>".

For the 64-reg,UMOV-64-reg variant: is the element index encoded in "imm5<4>".

Operation

The description of UMOV 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.