Signed and Unsigned Bit Field Extract. Copies adjacent bits from one register into the least significant bits of a second register, and sign extends or zero extends to 32 bits.
is an optional condition code.
is the destination register.
is the source register.
is the bit number of least significant bit in the bitfield, in the range 0 to 31.
is the width of the bitfield, in the range 1 to (32-
You cannot use PC for any register.
You can use SP in ARM instructions but these are deprecated in ARMv6T2 and above. You cannot use SP in Thumb instructions.
These ARM instructions are available in ARMv6T2 and above.
These 32-bit Thumb instructions are available in ARMv6T2 and above.
There are no 16-bit Thumb versions of these instructions.