GNU Info

(nasm.info)Section B.4.292

---

Next: Section B.4.293 Prev: Section B.4.291 Up: Section B.4

---

Enter node , (file) or (file)node

B.4.292. `SHUFPD': Shuffle Packed Double-Precision FP Values
------------------------------------------------------------

     SHUFPD xmm1,xmm2/m128,imm8    ; 66 0F C6 /r ib  [WILLAMETTE,SSE2]

   `SHUFPD' moves one of the packed double-precision FP values from the
destination operand into the low quadword of the destination operand;
the upper quadword is generated by moving one of the double-precision
FP values from the source operand into the destination. The select
(third) operand selects which of the values are moved to the
destination register.

   The select operand is an 8-bit immediate: bit 0 selects which value
is moved from the destination operand to the result (where 0 selects
the low quadword and 1 selects the high quadword) and bit 1 selects
which value is moved from the source operand to the result. Bits 2
through 7 of the shuffle operand are reserved.