Every reference from code in an ROPI segment to a symbol in the same ROPI segment must be PC-relative. AAPCS does not define any other base register for a read-only segment. An address of an item in an ROPI segment cannot be assigned to an item in a different ROPI segment.

Every reference from code in an ROPI segment to a symbol in a different ROPI segment must be PC-relative. The two segments must be fixed relative to each other.

Every other reference from an ROPI segment must be to either:

A read-write word that addresses a symbol in an ROPI segment must be adjusted whenever the ROPI segment is moved.