MOV (to/from SP)

Move register value to or from SP

This instruction copies the value of a register to or from the stack pointer.

Encoding: Not setting the condition flags

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
	0	0	1	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0
sf	op	S							sh	imm12												Rn					Rd

32-bit (sf == 0)

MOV <Wd|WSP>, <Wn|WSP>

Equivalent to: ADD <Wd|WSP>, <Wn|WSP>, #0

64-bit (sf == 1)

MOV <Xd|SP>, <Xn|SP>

Equivalent to: ADD <Xd|SP>, <Xn|SP>, #0

Explanations

<Wd|WSP>: Is the 32-bit name of the destination general-purpose register or stack pointer, encoded in the "Rd" field.
<Wn|WSP>: Is the 32-bit name of the source general-purpose register or stack pointer, encoded in the "Rn" field.
<Xd|SP>: Is the 64-bit name of the destination general-purpose register or stack pointer, encoded in the "Rd" field.
<Xn|SP>: Is the 64-bit name of the source general-purpose register or stack pointer, encoded in the "Rn" field.

Operational Notes

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.