Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 1 REV 2.3 Manual page 1544

Jcc—Jump if Condition Is Met (Continued)
Real Address Mode Exceptions
#GP
Virtual 8086 Mode Exceptions
#GP(0)
4:242
If the offset being jumped to is beyond the limits of the CS segment
or is outside of the effective address space from 0 to FFFFH. This
condition can occur if 32-address size override prefix is used.
If the offset being jumped to is beyond the limits of the CS segment
or is outside of the effective address space from 0 to FFFFH. This
condition can occur if 32-address size override prefix is used.
Volume 4: Base IA-32 Instruction Reference