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pre-indexed addressing

An ARM64 memory operand, written with a !, that adds the offset to the base register first, uses the new address, and keeps the update.

In ARM64 pre-indexed addressing [xn, #imm]! the effective address is xn + imm and xn is written back with that value before the access completes.

Examples

  • ARM64 ldr x0, [x1, #8]! adds 8 to x1 first, then loads from the new address.

See also

base register memory operand
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