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AMD 64-Bit Technology - ECE User Home Pages

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26568—Rev. 3.02—August 2002<br />

<strong>AMD</strong> <strong>64</strong>-<strong>Bit</strong> <strong>Technology</strong><br />

MOVSD<br />

Move Scalar Double-Precision Floating-Point<br />

Moves a scalar double-precision floating-point value:<br />

„ from the low-order <strong>64</strong> bits of an XMM register or a <strong>64</strong>-bit memory location to the<br />

low-order <strong>64</strong> bits of another XMM register, or<br />

„ from the low-order <strong>64</strong> bits of an XMM register to the low-order <strong>64</strong> bits of another<br />

XMM register or a <strong>64</strong>-bit memory location.<br />

If the source operand is an XMM register, the high-order <strong>64</strong> bits of the destination<br />

XMM register are not modified. If the source operand is a memory location, the highorder<br />

<strong>64</strong> bits of the destination XMM register are cleared to all 0s.<br />

Mnemonic Opcode Description<br />

MOVSD xmm1, xmm2/mem<strong>64</strong> F2 0F 10 /r Moves double-precision floating-point value from an XMM<br />

register or <strong>64</strong>-bit memory location to an XMM register.<br />

MOVSD xmm1/mem<strong>64</strong>, xmm2 F2 0F 11 /r Moves double-precision floating-point value from an XMM<br />

register to an XMM register or <strong>64</strong>-bit memory location.<br />

MOVSD 179

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