Volume 3: General-Purpose and System Instructions - Stanford ...

24594 Rev. 3.10 February 2005 AMD64 TechnologyExceptionsException RealVirtual8086 Protected Cause of ExceptionInvalid opcode, #UD X X This instruction is only recognized in protected mode.Segment not present,X The LDT descriptor was marked not present.#NP (selector)Stack, #SS X A memory address exceeded the stack segment limit or was noncanonical.General protection, #GPX A memory address exceeded a data segment limit or was noncanonical.General protection, #GP(selector)XXXXXXCPL was not 0.A null data segment was used to reference memory.The source selector did not point into the GDT.The descriptor was beyond the GDT limit.The descriptor was not an LDT descriptor.The descriptor's extended attribute bits were not zero in 64-bitmode.X The new LDT base address was non-canonical.Page fault, #PF X A page fault resulted from the execution of the instruction.LLDT 323