152 lines
6.2 KiB
HTML
152 lines
6.2 KiB
HTML
<!DOCTYPE html>
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<html xmlns="http://www.w3.org/1999/xhtml" xmlns:svg="http://www.w3.org/2000/svg" xmlns:x86="http://www.felixcloutier.com/x86"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><link rel="stylesheet" type="text/css" href="style.css"></link><title>MOVHPD
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— Move High Packed Double Precision Floating-Point Value</title></head><body><header><nav><ul><li><a href='index.html'>Index</a></li><li>December 2023</li></ul></nav></header><h1>MOVHPD
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— Move High Packed Double Precision Floating-Point Value</h1>
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<table>
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<tr>
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<th>Opcode/Instruction</th>
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<th>Op / En</th>
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<th>64/32 bit Mode Support</th>
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<th>CPUID Feature Flag</th>
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<th>Description</th></tr>
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<tr>
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<td>66 0F 16 /r MOVHPD xmm1, m64</td>
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<td>A</td>
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<td>V/V</td>
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<td>SSE2</td>
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<td>Move double precision floating-point value from m64 to high quadword of xmm1.</td></tr>
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<tr>
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<td>VEX.128.66.0F.WIG 16 /r VMOVHPD xmm2, xmm1, m64</td>
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<td>B</td>
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<td>V/V</td>
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<td>AVX</td>
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<td>Merge double precision floating-point value from m64 and the low quadword of xmm1.</td></tr>
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<tr>
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<td>EVEX.128.66.0F.W1 16 /r VMOVHPD xmm2, xmm1, m64</td>
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<td>D</td>
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<td>V/V</td>
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<td>AVX512F</td>
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<td>Merge double precision floating-point value from m64 and the low quadword of xmm1.</td></tr>
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<tr>
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<td>66 0F 17 /r MOVHPD m64, xmm1</td>
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<td>C</td>
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<td>V/V</td>
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<td>SSE2</td>
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<td>Move double precision floating-point value from high quadword of xmm1 to m64.</td></tr>
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<tr>
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<td>VEX.128.66.0F.WIG 17 /r VMOVHPD m64, xmm1</td>
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<td>C</td>
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<td>V/V</td>
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<td>AVX</td>
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<td>Move double precision floating-point value from high quadword of xmm1 to m64.</td></tr>
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<tr>
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<td>EVEX.128.66.0F.W1 17 /r VMOVHPD m64, xmm1</td>
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<td>E</td>
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<td>V/V</td>
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<td>AVX512F</td>
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<td>Move double precision floating-point value from high quadword of xmm1 to m64.</td></tr></table>
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<h2 id="instruction-operand-encoding">Instruction Operand Encoding<a class="anchor" href="#instruction-operand-encoding">
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¶
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</a></h2>
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<table>
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<tr>
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<th>Op/En</th>
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<th>Tuple Type</th>
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<th>Operand 1</th>
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<th>Operand 2</th>
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<th>Operand 3</th>
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<th>Operand 4</th></tr>
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<tr>
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<td>A</td>
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<td>N/A</td>
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<td>ModRM:reg (r, w)</td>
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<td>ModRM:r/m (r)</td>
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<td>N/A</td>
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<td>N/A</td></tr>
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<tr>
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<td>B</td>
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<td>N/A</td>
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<td>ModRM:reg (w)</td>
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<td>VEX.vvvv (r)</td>
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<td>ModRM:r/m (r)</td>
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<td>N/A</td></tr>
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<tr>
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<td>C</td>
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<td>N/A</td>
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<td>ModRM:r/m (w)</td>
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<td>ModRM:reg (r)</td>
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<td>N/A</td>
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<td>N/A</td></tr>
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<tr>
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<td>D</td>
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<td>Tuple1 Scalar</td>
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<td>ModRM:reg (w)</td>
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<td>EVEX.vvvv (r)</td>
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<td>ModRM:r/m (r)</td>
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<td>N/A</td></tr>
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<tr>
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<td>E</td>
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<td>Tuple1 Scalar</td>
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<td>ModRM:r/m (w)</td>
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<td>ModRM:reg (r)</td>
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<td>N/A</td>
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<td>N/A</td></tr></table>
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<h2 id="description">Description<a class="anchor" href="#description">
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¶
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</a></h2>
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<p>This instruction cannot be used for register to register or memory to memory moves.</p>
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<p>128-bit Legacy SSE load:</p>
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<p>Moves a double precision floating-point value from the source 64-bit memory operand and stores it in the high 64-bits of the destination XMM register. The lower 64bits of the XMM register are preserved. Bits (MAXVL-1:128) of the corresponding destination register are preserved.</p>
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<p>VEX.128 & EVEX encoded load:</p>
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<p>Loads a double precision floating-point value from the source 64-bit memory operand (the third operand) and stores it in the upper 64-bits of the destination XMM register (first operand). The low 64-bits from the first source operand (second operand) are copied to the low 64-bits of the destination. Bits (MAXVL-1:128) of the corresponding destination register are zeroed.</p>
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<p>128-bit store:</p>
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<p>Stores a double precision floating-point value from the high 64-bits of the XMM register source (second operand) to the 64-bit memory location (first operand).</p>
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<p>Note: VMOVHPD (store) (VEX.128.66.0F 17 /r) is legal and has the same behavior as the existing 66 0F 17 store. For VMOVHPD (store) VEX.vvvv and EVEX.vvvv are reserved and must be 1111b otherwise instruction will #UD.</p>
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<p>If VMOVHPD is encoded with VEX.L or EVEX.L’L= 1, an attempt to execute the instruction encoded with VEX.L or EVEX.L’L= 1 will cause an #UD exception.</p>
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<h2 id="operation">Operation<a class="anchor" href="#operation">
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¶
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</a></h2>
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<h3 id="movhpd--128-bit-legacy-sse-load-">MOVHPD (128-bit Legacy SSE Load)<a class="anchor" href="#movhpd--128-bit-legacy-sse-load-">
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¶
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</a></h3>
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<pre>DEST[63:0] (Unmodified)
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DEST[127:64] := SRC[63:0]
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DEST[MAXVL-1:128] (Unmodified)
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</pre>
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<h3 id="vmovhpd--vex-128---evex-encoded-load-">VMOVHPD (VEX.128 & EVEX Encoded Load)<a class="anchor" href="#vmovhpd--vex-128---evex-encoded-load-">
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¶
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</a></h3>
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<pre>DEST[63:0] := SRC1[63:0]
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DEST[127:64] := SRC2[63:0]
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DEST[MAXVL-1:128] := 0
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</pre>
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<h3 id="vmovhpd--store-">VMOVHPD (Store)<a class="anchor" href="#vmovhpd--store-">
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¶
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</a></h3>
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<pre>DEST[63:0] := SRC[127:64]
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</pre>
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<h2 id="intel-c-c++-compiler-intrinsic-equivalent">Intel C/C++ Compiler Intrinsic Equivalent<a class="anchor" href="#intel-c-c++-compiler-intrinsic-equivalent">
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¶
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</a></h2>
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<pre>MOVHPD __m128d _mm_loadh_pd ( __m128d a, double *p)
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</pre>
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<pre>MOVHPD void _mm_storeh_pd (double *p, __m128d a)
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</pre>
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<h2 class="exceptions" id="simd-floating-point-exceptions">SIMD Floating-Point Exceptions<a class="anchor" href="#simd-floating-point-exceptions">
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¶
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</a></h2>
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<p>None.</p>
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<h2 class="exceptions" id="other-exceptions">Other Exceptions<a class="anchor" href="#other-exceptions">
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¶
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</a></h2>
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<p>Non-EVEX-encoded instruction, see <span class="not-imported">Table 2-22</span>, “Type 5 Class Exception Conditions,” additionally:</p>
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<table>
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<tr>
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<td>#UD</td>
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<td>If VEX.L = 1.</td></tr></table>
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<p>EVEX-encoded instruction, see <span class="not-imported">Table 2-57</span>, “Type E9NF Class Exception Conditions.”</p><footer><p>
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This UNOFFICIAL, mechanically-separated, non-verified reference is provided for convenience, but it may be
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inc<span style="opacity: 0.2">omp</span>lete or b<sub>r</sub>oke<sub>n</sub> in various obvious or non-obvious
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ways. Refer to <a href="https://software.intel.com/en-us/download/intel-64-and-ia-32-architectures-sdm-combined-volumes-1-2a-2b-2c-2d-3a-3b-3c-3d-and-4">Intel® 64 and IA-32 Architectures Software Developer’s Manual</a> for anything serious.
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</p></footer></body></html>
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