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AMD64 Technology 24594 Rev. 3.10 February 2005Mnemonic Opcode DescriptionPOP ES 07POP SS 17Pop the top of the stack into the ES register.(Invalid in 64-bit mode.)Pop the top of the stack into the SS register.(Invalid in 64-bit mode.)POP FS 0F A1 Pop the top of the stack into the FS register.POP GS 0F A9 Pop the top of the stack into the GS register.Related InstructionsPUSHrFLAGS AffectedNoneExceptionsVirtualException Real 8086 Protected Cause of ExceptionInvalid opcode, #UD X POP DS, POP ES, or POP SS was executed in 64-bit mode.Segment not present,#NP (selector)XThe DS, ES, FS, or GS register was loaded with a non-null segmentselector and the segment was marked not present.Stack, #SS X X X A memory address exceeded the stack segment limit or was noncanonical.Stack, #SS(selector)General protection,#GPXX X XThe SS register was loaded with a non-null segment selector and thesegment was marked not present.A memory address exceeded a data segment limit or was non-canonical.XXThe destination operand was in a non-writable segment.A null data segment was used to reference memory.224 POP
24594 Rev. 3.10 February 2005 AMD64 TechnologyExceptionGeneral protection,#GP(selector)RealVirtual8086 Protected Cause of ExceptionXXA segment register was loaded and the segment descriptor exceededthe descriptor table limit.A segment register was loaded and the segment selector’s TI bit wasset, but the LDT selector was a null selector.XXXXThe SS register was loaded with a null segment selector in non-64-bitmode or while CPL = 3.The SS register was loaded and the segment selector RPL and thesegment descriptor DPL were not equal to the CPL.The SS register was loaded and the segment pointed to was a not awritable data segment.The DS, ES, FS, or GS register was loaded and the segment pointedto was a data or non-conforming code segment, but the RPL or theCPL was greater than the DPL.X The DS, ES, FS, or GS register was loaded and the segment pointedto was not a data segment or readable code segment.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.POP 225
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