GNU Info

(nasm.info)Section B.4.257

---

Next: Section B.4.258 Prev: Section B.4.256 Up: Section B.4

---

Enter node , (file) or (file)node

B.4.257. `PSRLx': Packed Data Bit Shift Right Logical
-----------------------------------------------------

     PSRLW mm1,mm2/m64             ; 0F D1 /r             [PENT,MMX]
     PSRLW mm,imm8                 ; 0F 71 /2 ib          [PENT,MMX]

     PSRLW xmm1,xmm2/m128          ; 66 0F D1 /r     [WILLAMETTE,SSE2]
     PSRLW xmm,imm8                ; 66 0F 71 /2 ib  [WILLAMETTE,SSE2]

     PSRLD mm1,mm2/m64             ; 0F D2 /r             [PENT,MMX]
     PSRLD mm,imm8                 ; 0F 72 /2 ib          [PENT,MMX]

     PSRLD xmm1,xmm2/m128          ; 66 0F D2 /r     [WILLAMETTE,SSE2]
     PSRLD xmm,imm8                ; 66 0F 72 /2 ib  [WILLAMETTE,SSE2]

     PSRLQ mm1,mm2/m64             ; 0F D3 /r             [PENT,MMX]
     PSRLQ mm,imm8                 ; 0F 73 /2 ib          [PENT,MMX]

     PSRLQ xmm1,xmm2/m128          ; 66 0F D3 /r     [WILLAMETTE,SSE2]
     PSRLQ xmm,imm8                ; 66 0F 73 /2 ib  [WILLAMETTE,SSE2]

     PSRLDQ xmm1,imm8              ; 66 0F 73 /3 ib  [WILLAMETTE,SSE2]

   `PSRLx' performs logical right shifts of the data elements in the
destination (first) operand, moving each bit in the separate elements
right by the number of bits specified in the source (second) operand,
clearing the high-order bits as they are vacated. `PSRLDQ' shifts
bytes, not bits.

   * `PSRLW' shifts word sized elements.

   * `PSRLD' shifts doubleword sized elements.

   * `PSRLQ' shifts quadword sized elements.

   * `PSRLDQ' shifts double quadword sized elements.