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Intel 253666-024US User Manual

Page 710

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3-664 Vol. 2A

MOVQ—Move Quadword

INSTRUCTION SET REFERENCE, A-M

DEST[127:64] ← 0000000000000000H;

Flags Affected

None.

SIMD Floating-Point Exceptions

None.

Protected Mode Exceptions

#GP(0)

If the destination operand is in a non-writable segment.
If a memory operand effective address is outside the CS, DS,

ES, FS, or GS segment limit.

#SS(0)

If a memory operand effective address is outside the SS

segment limit.

#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

exception.

#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

exception.