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LSR (immediate)
Logical Shift Right (immediate).
This instruction is an alias of UBFM.
The equivalent instruction is UBFM .Wd, Wn, #shift, #31
Syntax
LSR
Wd, Wn, #shift ; 32-bit
LSR
Xd, Xn, #shift ; 64-bit
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.
shift-
Depends on the instruction variant:
- 32-bit general registers
- Is the shift amount, in the range 0 to 31.
- 64-bit general registers
- Is the shift amount, in the range 0 to 63.
Xd- Is the 64-bit name of the general-purpose destination register.
Xn- Is the 64-bit name of the general-purpose source register.
Operation
Logical Shift Right (immediate) shifts a register value right by an immediate number of bits, shifting in zeros, and writes the result to the destination register.
Rd = LSR(Rn, shift)RW or X.