17.13 LDARB

Load-Acquire Register Byte.

Syntax

LDARB Wt, [Xn|SP{,#0}]

Where:

Wt
Is the 32-bit name of the general-purpose register to be transferred.
Xn|SP
Is the 64-bit name of the general-purpose base register or stack pointer.

Usage

Load-Acquire Register Byte derives an address from a base register value, loads a byte from memory, zero-extends it and writes it to a register. The instruction also has memory ordering semantics as described in Load-Acquire, Store-Release in the Arm® Architecture Reference Manual Arm®v8, for Arm®v8‑A architecture profile. For information about memory accesses, see Load/Store addressing modes in the Arm® Architecture Reference Manual Arm®v8, for Arm®v8‑A architecture profile.

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