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ARM Compiler armasm User Guide : UXTB

UXTB

Unsigned Extend Byte.

This instruction is an alias of UBFM.

Syntax

UXTB Wd, Wn

Equivalent to UBFM Wd, Wn, #0, #7.

Where:

Wd

Is the 32-bit name of the general-purpose destination register.

Wn

Is the 32-bit name of the general-purpose source register.

Operation

Unsigned Extend Byte extracts an 8-bit value from a register, zero-extends it to the size of the register, and writes the result to the destination register.

Wd = ZeroExtend(Wn7:0).

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