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

24594 Rev. 3.10 February 2005 AMD64 TechnologyExceptionsException RealVirtual8086 Protected Cause of ExceptionStack, #SS X X X A memory address exceeded the stack segment limit or was noncanonical.General protection,#GPXThe I/O privilege level was less than 3 and one of the following conditionswas true:• CR4.VME was 0.• The effective operand size was 32-bit.• Both the original EFLAGS.VIP and the new EFLAGS.IF bits wereset.• The new EFLAGS.TF bit was set.Page fault, #PF X X A page fault resulted from the execution of the instruction.Alignment check, #AC X X An unaligned memory reference was performed while alignmentchecking was enabled.POPFx 229