IDA Help: op_offset_high16

Convert operand to a high offset
High offset is the upper 16bits of an offset.
This type is used by PPC, MIPS, and other RISC processors.
(for the explanations of 'ea' and 'n' please see op_bin())
     target - the full value (all 32bits) of the offset

success op_offset_high16(long ea, int n, long target);