Intel 253666-024US User Manual

Page 664

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3-618 Vol. 2A

MOVD/MOVQ—Move Doubleword/Move Quadword

INSTRUCTION SET REFERENCE, A-M

#UD

If CR0.EM[bit 2] = 1.

128-bit operations will generate #UD only if CR4.OSFXSR[bit 9]
= 0. Execution of 128-bit instructions on a non-SSE2 capable
processor (one that is MMX technology capable) will result in the
instruction operating on the mm registers, not #UD.

If the LOCK prefix is used.

#NM

If CR0.TS[bit 3] = 1.

#MF

(MMX register operations only) If there is a pending FPU excep-

tion.

#PF(fault-code)

If a page fault occurs.

#AC(0)

If alignment checking is enabled and an unaligned memory

reference is made while the current privilege level is 3.

Real-Address Mode Exceptions

#GP

If any part of the operand lies outside of the effective address

space from 0 to FFFFH.

#UD

If CR0.EM[bit 2] = 1.

128-bit operations will generate #UD only if CR4.OSFXSR[bit 9]
= 0. Execution of 128-bit instructions on a non-SSE2 capable
processor (one that is MMX technology capable) will result in the
instruction operating on the mm registers, not #UD.

If the LOCK prefix is used.

#NM

If CR0.TS[bit 3] = 1.

#MF

(MMX register operations only) If there is a pending FPU excep-

tion.

Virtual-8086 Mode Exceptions

Same exceptions as in real address mode.
#PF(fault-code)

If a page fault occurs.

#AC(0)

If alignment checking is enabled and an unaligned memory

reference is made.

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-

canonical form.

#GP(0)

If the memory address is in a non-canonical form.

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