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SXTB
Signed Extend Byte.
This instruction is an alias of SBFM.
Syntax
SXTB
Wd, Wn ; 32-bit general registers
Equivalent to SBFM Wd, Wn, #0, #7
SXTB
Xd, Wn ; 64-bit general registers
Equivalent to SBFM Xd, Xn, #0, #7
Where:
Wd-
Is the 32-bit name of the general-purpose destination register.
Xd-
Is the 64-bit name of the general-purpose destination register.
Wn-
Is the 32-bit name of the general-purpose source register.
Usage
Signed Extend Byte extracts an 8-bit value from a register, sign-extends it to the size of the register, and writes the result to the destination register.