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<big><font face="黑体">INTEL 体系结构<br>MMX™ 技术程序员参考手册</font></big><br>
<small><FONT FACE="Arial"><b>Intel Architecture MMX™ Technology Programmer's Reference Manual</b></font></small><br><br>
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<h3><B>APPENDIX A<BR>
IA MMX™ INSTRUCTION SET SUMMARY</B></h3>
Table A-1 summarizes the IA MMX™ instruction set base mnemonics. The instructions are grouped by categories of related functions.<BR><BR>
Most of the instructions have multiple variations that are not listed in Table A-1. For example, PADD has the following variations: PADDB, PADDW, and PADDD. The instruction variations and mnemonics are detailed in the Instruction description section of Chapter 5.<BR><BR>
<a name="TableA-1"></a>
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<tr><TD bgcolor="#000000" align=center colspan=5><small><b>Table A-1. IA MMX Instruction Set Summary, Grouped into Functional Categories</small></b></td></tr>
<tr><TD bgcolor="#000000" colspan=2 align=center><small><b>Category</b></font></td><TD bgcolor="#000000" align=center><b><small>Wraparound</b></small></td><TD bgcolor="#000000" align=center><b><small>Signed Saturation</b></small></td><TD bgcolor="#000000" align=center><b><small>Unsigned Saturation</b></small></td></tr>
<tr><TD bgcolor="#000000" rowspan=4 align=center><small><b>Arithmetic</small></b></td><TD bgcolor="#000000"><small>addition</small></td><TD bgcolor="#000000"><small>PADD</small></td><TD bgcolor="#000000"><small>PADDS</small></td><TD bgcolor="#000000"><small>PADDUS</small></td></tr>
<tr><TD bgcolor="#000000"><small>subtraction</small></td><TD bgcolor="#000000"><small>PSUB</small></td><TD bgcolor="#000000"><small>PSUBS</small></td><TD bgcolor="#000000"><small>PSUBUS</small></td></tr>
<tr><TD bgcolor="#000000"><small>multiplication</small></td><TD bgcolor="#000000"><small>PMULL/H</small></td><TD bgcolor="#000000"></td><TD bgcolor="#000000"></td></tr>
<tr><TD bgcolor="#000000"><small>multiply and add</small></td><TD bgcolor="#000000"><small>PMADD</small></td><TD bgcolor="#000000"></td><TD bgcolor="#000000"></td></tr>
<tr><TD bgcolor="#000000" rowspan=2 align=center><small><b>Comparison</b></small></td><TD bgcolor="#000000"><small>compare</small></td><TD bgcolor="#000000"><small>PCMPEQ</small></td><TD bgcolor="#000000"></td><TD bgcolor="#000000"></td></tr>
<tr><TD bgcolor="#000000"><small>compare</small></td><TD bgcolor="#000000"><small>PCMPGT</small></td><TD bgcolor="#000000"></td><TD bgcolor="#000000"></td></tr>
<tr><TD bgcolor="#000000" rowspan=2 align=center><small><b>Conversion</b></small></td><TD bgcolor="#000000"><small>pack</small></td><TD bgcolor="#000000"></td><TD bgcolor="#000000"><small>PACKSS</small></td><TD bgcolor="#000000"><small>PACKUS</small></td></tr>
<tr><TD bgcolor="#000000"><small>unpack</small></td><TD bgcolor="#000000"><small>PUNPCKL/H</small></td><TD bgcolor="#000000"></td><TD bgcolor="#000000"></td></tr>
<tr><TD bgcolor="#000000" colspan=2></td><TD bgcolor="#000000" colspan=2 align=center><small><b>Packed</b></small></td><TD bgcolor="#000000" align=center><small><b>Full 64-bit</b></small></td></tr>
<tr><TD bgcolor="#000000" rowspan=4 align=center><small><b>Logical</b></font></td><TD bgcolor="#000000"><small>and</small></td><TD bgcolor="#000000" colspan=2></td><TD bgcolor="#000000"><small>PAND</small></td></tr>
<tr><TD bgcolor="#000000"><small>and not</small></td><TD bgcolor="#000000" colspan=2></td><TD bgcolor="#000000"><small>PANDN</small></td></tr>
<tr><TD bgcolor="#000000"><small>or</small></td><TD bgcolor="#000000" colspan=2></td></td><TD bgcolor="#000000"><small>POR</small></td></tr>
<tr><TD bgcolor="#000000"><small>exclusive or</small></td><TD bgcolor="#000000" colspan=2></td><TD bgcolor="#000000"><small>PXOR</small></td></tr>
<tr><TD bgcolor="#000000" rowspan=3 align=center><small><b>Shift</b></small></td><TD bgcolor="#000000"><small>shift left logical</small></td><TD bgcolor="#000000" colspan=2><small>PSLL</small></td><TD bgcolor="#000000"><small>PSLL</small></td></tr>
<tr><TD bgcolor="#000000"><small>shift right logical</small></td><TD bgcolor="#000000" colspan=2><small>PSLL</small></td><TD bgcolor="#000000"><small>PSLL</small></td></tr>
<tr><TD bgcolor="#000000"><small>shift right arithmetic</small></td><TD bgcolor="#000000" colspan=2><small>PSRA</small></td><TD bgcolor="#000000"></td></tr>
<tr><TD bgcolor="#000000"></td><TD bgcolor="#000000"></td><TD bgcolor="#000000" colspan=2 align=center><small><b>32-bit Transfers</b></small></td><TD bgcolor="#000000" align=center><small><b>64-bit Transfers</b></small></td></tr>
<tr><TD bgcolor="#000000" rowspan=3 align=center><small><b>Data Transfer Operations</b></small></td><TD bgcolor="#000000"><small>register--register</small></td><TD bgcolor="#000000" colspan=2><small>MOVD</small></td><TD bgcolor="#000000"><small>MOVQ</small></td></tr>
<tr><TD bgcolor="#000000"><small>load from memory</small></td><TD bgcolor="#000000" colspan=2><small>MOVD</small></td><TD bgcolor="#000000"><small>MOVQ</small></td></tr>
<tr><TD bgcolor="#000000"><small>store to memory</small></td><TD bgcolor="#000000" colspan=2><small>MOVD</small></td><TD bgcolor="#000000"><small>MOVQ</small></td></tr>
<tr><TD bgcolor="#000000" align=center><small><b>FP and MMX(TM) State Management</b></small></td><TD bgcolor="#000000"></td><TD bgcolor="#000000" colspan=3><small>EMMS</small></td></tr>
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