Intel 64 and IA-32 Architectures Software Developers Manual Volume 2A, Instruction Set Reference, A-M

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INSTRUCTION SET REFERENCE, A-M

ELSE LDTR ← INVALID

FI;

Flags Affected

None.

Protected Mode Exceptions

#GP(0) If the current privilege level is not 0.

If a memory operand effective address is outside the CS, DS,

ES, FS, or GS segment limit.

If the DS, ES, FS, or GS register contains a NULL segment

selector.

#GP(selector) If the selector operand does not point into the Global Descriptor

Table or if the entry in the GDT is not a Local Descriptor Table.

Segment selector is beyond GDT limit.

#SS(0) If a memory operand effective address is outside the SS

segment limit.

#NP(selector) If the LDT descriptor is not present.

#PF(fault-code) If a page fault occurs.

Real-Address Mode Exceptions

#UD The LLDT instruction is not recognized in real-address mode.

Virtual-8086 Mode Exceptions

#UD The LLDT instruction is not recognized in virtual-8086 mode.

Compatibility Mode Exceptions

Same exceptions as in Protected Mode.

64-Bit Mode Exceptions

#SS(0) If a memory address referencing the SS segment is in a non-