📄 chapter9.htm
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<DIV class=Section1 style="LAYOUT-GRID: 15.6pt none">
<H1><SPAN style="mso-tab-count: 1"> </SPAN>Assembler
language programming</H1>
<P class=MsoNormal style="TEXT-INDENT: 21pt"><SPAN lang=ZH-CN
style="FONT-FAMILY: SimSun; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-language: ZH-CN">这一章将告诉你如何阅读并编写</SPAN><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">MIPS</SPAN><SPAN
lang=ZH-CN
style="FONT-FAMILY: SimSun; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-language: ZH-CN">体系下的汇编代码。</SPAN><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">MIPS</SPAN><SPAN
lang=ZH-CN
style="FONT-FAMILY: SimSun; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-language: ZH-CN">汇编代码看上去与实际的代码差异很大，这主要是因为以下原因</SPAN><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">:</SPAN></P>
<P class=MsoNormal style="TEXT-INDENT: 21pt"><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">1,</SPAN><SPAN
style="mso-fareast-language: ZH-CN"><SPAN
style="mso-tab-count: 1"> </SPAN></SPAN><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">MIPS</SPAN><SPAN
lang=ZH-CN
style="FONT-FAMILY: SimSun; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-language: ZH-CN">汇编编译器</SPAN><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">(assembler)</SPAN><SPAN
lang=ZH-CN
style="FONT-FAMILY: SimSun; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-language: ZH-CN">提供了大量的已经预定义的宏指令</SPAN><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">(extra
macro-instruction)</SPAN><SPAN lang=ZH-CN
style="FONT-FAMILY: SimSun; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-language: ZH-CN">。所以编译器的指令集</SPAN><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">(instruction
set)</SPAN><SPAN lang=ZH-CN
style="FONT-FAMILY: SimSun; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-language: ZH-CN">要比</SPAN><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">CPU</SPAN><SPAN
lang=ZH-CN
style="FONT-FAMILY: SimSun; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-language: ZH-CN">实际提供的指令集大的多。</SPAN></P>
<P class=MsoNormal style="TEXT-INDENT: 21pt"><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">2</SPAN><SPAN
lang=ZH-CN
style="FONT-FAMILY: SimSun; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-language: ZH-CN">，在</SPAN><SPAN
style="mso-fareast-language: ZH-CN; mso-fareast-font-family: SimSun">MIPS</SPAN><SPAN
lang=ZH-CN
style="FONT-FAMILY: SimSun; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-language: ZH-CN">汇编代码中有许多伪操作符，放在代码开始和结束的地方，用来预定义常用数据，控制指令排列顺序，以及控制对代码的优化。通常它们被称为⌨️ 快捷键说明
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