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<a href='https://github.com/akkartik/mu/blob/master/subx/031check_operands.cc'>https://github.com/akkartik/mu/blob/master/subx/031check_operands.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr">  1 </span><span class="Comment">//: Since we're tagging operands with their types, let's start checking these</span>
<span id="L2" class="LineNr">  2 </span><span class="Comment">//: operand types for each instruction.</span>
<span id="L3" class="LineNr">  3 </span>
<span id="L4" class="LineNr">  4 </span><span class="Delimiter">:(scenario check_missing_imm8_operand)</span>
<span id="L5" class="LineNr">  5 </span><span class="Special">% Hide_errors = true;</span>
<span id="L6" class="LineNr">  6 </span>== <span class="Constant">0x1</span>
<span id="L7" class="LineNr">  7 </span>cd  <span class="Comment"># int ??</span>
<span id="L8" class="LineNr">  8 </span><span class="traceContains">+error: 'cd' (software interrupt): missing imm8 operand</span>
<span id="L9" class="LineNr">  9 </span>
<span id="L10" class="LineNr"> 10 </span><span class="Delimiter">:(before &quot;Pack Operands(segment code)&quot;)</span>
<span id="L11" class="LineNr"> 11 </span>check_operands<span class="Delimiter">(</span><a href='031check_operands.cc.html#L11'>code</a><span class="Delimiter">);</span>
<span id="L12" class="LineNr"> 12 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L224'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L13" class="LineNr"> 13 </span>
<span id="L14" class="LineNr"> 14 </span><span class="Delimiter">:(code)</span>
<span id="L15" class="LineNr"> 15 </span><span class="Normal">void</span> check_operands<span class="Delimiter">(</span><span class="Normal">const</span> segment&amp; <a href='031check_operands.cc.html#L11'>code</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L16" class="LineNr"> 16 </span>  <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;-- check operands&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L17" class="LineNr"> 17 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span><a href='031check_operands.cc.html#L11'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L18" class="LineNr"> 18 </span>    check_operands<span class="Delimiter">(</span><a href='031check_operands.cc.html#L11'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span id="L19" class="LineNr"> 19 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L224'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// stop at the first mal-formed instruction</span>
<span id="L20" class="LineNr"> 20 </span>  <span class="Delimiter">}</span>
<span id="L21" class="LineNr"> 21 </span><span class="Delimiter">}</span>
<span id="L22" class="LineNr"> 22 </span>
<span id="L23" class="LineNr"> 23 </span><span class="Normal">void</span> check_operands<span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L24" class="LineNr"> 24 </span>  <a href='011run.cc.html#L123'>word</a> op = <a href='031check_operands.cc.html#L36'>preprocess_op</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span>
<span id="L25" class="LineNr"> 25 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>op<span class="Delimiter">.</span>data == <span class="Constant">&quot;0f&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L26" class="LineNr"> 26 </span>    <a href='031check_operands.cc.html#L519'>check_operands_0f</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
<span id="L27" class="LineNr"> 27 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L28" class="LineNr"> 28 </span>  <span class="Delimiter">}</span>
<span id="L29" class="LineNr"> 29 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>op<span class="Delimiter">.</span>data == <span class="Constant">&quot;f3&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L30" class="LineNr"> 30 </span>    <a href='031check_operands.cc.html#L487'>check_operands_f3</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
<span id="L31" class="LineNr"> 31 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L32" class="LineNr"> 32 </span>  <span class="Delimiter">}</span>
<span id="L33" class="LineNr"> 33 </span>  check_operands<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> op<span class="Delimiter">);</span>
<span id="L34" class="LineNr"> 34 </span><span class="Delimiter">}</span>
<span id="L35" class="LineNr"> 35 </span>
<span id="L36" class="LineNr"> 36 </span><a href='011run.cc.html#L123'>word</a> <a href='031check_operands.cc.html#L36'>preprocess_op</a><span class="Delimiter">(</span><a href='011run.cc.html#L123'>word</a><span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> op<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L37" class="LineNr"> 37 </span>  op<span class="Delimiter">.</span>data = <a href='031check_operands.cc.html#L552'>tolower</a><span class="Delimiter">(</span>op<span class="Delimiter">.</span>data<span class="Delimiter">.</span>c_str<span class="Delimiter">());</span>
<span id="L38" class="LineNr"> 38 </span>  <span class="Comment">// opcodes can't be negative</span>
<span id="L39" class="LineNr"> 39 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L93'>starts_with</a><span class="Delimiter">(</span>op<span class="Delimiter">.</span>data<span class="Delimiter">,</span> <span class="Constant">&quot;0x&quot;</span><span class="Delimiter">))</span>
<span id="L40" class="LineNr"> 40 </span>    op<span class="Delimiter">.</span>data = op<span class="Delimiter">.</span>data<span class="Delimiter">.</span>substr<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span>
<span id="L41" class="LineNr"> 41 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>op<span class="Delimiter">.</span>data<span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">)</span>
<span id="L42" class="LineNr"> 42 </span>    op<span class="Delimiter">.</span>data = string<span class="Delimiter">(</span><span class="Constant">&quot;0&quot;</span><span class="Delimiter">)</span>+op<span class="Delimiter">.</span>data<span class="Delimiter">;</span>
<span id="L43" class="LineNr"> 43 </span>  <span class="Identifier">return</span> op<span class="Delimiter">;</span>
<span id="L44" class="LineNr"> 44 </span><span class="Delimiter">}</span>
<span id="L45" class="LineNr"> 45 </span>
<span id="L46" class="LineNr"> 46 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L46'>test_preprocess_op</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L47" class="LineNr"> 47 </span>  <a href='011run.cc.html#L123'>word</a> w1<span class="Delimiter">;</span>  w1<span class="Delimiter">.</span>data = <span class="Constant">&quot;0xf&quot;</span><span class="Delimiter">;</span>
<span id="L48" class="LineNr"> 48 </span>  <a href='011run.cc.html#L123'>word</a> w2<span class="Delimiter">;</span>  w2<span class="Delimiter">.</span>data = <span class="Constant">&quot;0f&quot;</span><span class="Delimiter">;</span>
<span id="L49" class="LineNr"> 49 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='031check_operands.cc.html#L36'>preprocess_op</a><span class="Delimiter">(</span>w1<span class="Delimiter">).</span>data<span class="Delimiter">,</span> <a href='031check_operands.cc.html#L36'>preprocess_op</a><span class="Delimiter">(</span>w2<span class="Delimiter">).</span>data<span class="Delimiter">);</span>
<span id="L50" class="LineNr"> 50 </span><span class="Delimiter">}</span>
<span id="L51" class="LineNr"> 51 </span>
<span id="L52" class="LineNr"> 52 </span><span class="Comment">//: To check the operands for an opcode, we'll track the permitted operands</span>
<span id="L53" class="LineNr"> 53 </span><span class="Comment">//: for each supported opcode in a bitvector. That way we can often compute the</span>
<span id="L54" class="LineNr"> 54 </span><span class="Comment">//: bitvector for each instruction's operands and compare it with the expected.</span>
<span id="L55" class="LineNr"> 55 </span>
<span id="L56" class="LineNr"> 56 </span><span class="Delimiter">:(before &quot;End Types&quot;)</span>
<span id="L57" class="LineNr"> 57 </span><span class="Normal">enum</span> <a href='031check_operands.cc.html#L57'>operand_type</a> <span class="Delimiter">{</span>
<span id="L58" class="LineNr"> 58 </span>  <span class="Comment">// start from the least significant bit</span>
<span id="L59" class="LineNr"> 59 </span>  <a href='031check_operands.cc.html#L59'>MODRM</a><span class="Delimiter">,</span>  <span class="Comment">// more complex, may also involve disp8 or disp32</span>
<span id="L60" class="LineNr"> 60 </span>  <a href='031check_operands.cc.html#L60'>SUBOP</a><span class="Delimiter">,</span>
<span id="L61" class="LineNr"> 61 </span>  <a href='031check_operands.cc.html#L61'>DISP8</a><span class="Delimiter">,</span>
<span id="L62" class="LineNr"> 62 </span>  <a href='031check_operands.cc.html#L62'>DISP16</a><span class="Delimiter">,</span>
<span id="L63" class="LineNr"> 63 </span>  <a href='031check_operands.cc.html#L63'>DISP32</a><span class="Delimiter">,</span>
<span id="L64" class="LineNr"> 64 </span>  <a href='031check_operands.cc.html#L64'>IMM8</a><span class="Delimiter">,</span>
<span id="L65" class="LineNr"> 65 </span>  <a href='031check_operands.cc.html#L65'>IMM32</a><span class="Delimiter">,</span>
<span id="L66" class="LineNr"> 66 </span>  <a href='031check_operands.cc.html#L66'>NUM_OPERAND_TYPES</a>
<span id="L67" class="LineNr"> 67 </span><span class="Delimiter">};</span>
<span id="L68" class="LineNr"> 68 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
<span id="L69" class="LineNr"> 69 </span>vector&lt;string&gt; <span class="Special"><a href='031check_operands.cc.html#L69'>Operand_type_name</a></span><span class="Delimiter">;</span>
<span id="L70" class="LineNr"> 70 </span>map&lt;string<span class="Delimiter">,</span> operand_type&gt; <span class="Special"><a href='031check_operands.cc.html#L70'>Operand_type</a></span><span class="Delimiter">;</span>
<span id="L71" class="LineNr"> 71 </span><span class="Delimiter">:(before &quot;End One-time Setup&quot;)</span>
<span id="L72" class="LineNr"> 72 </span><a href='031check_operands.cc.html#L74'>init_op_types</a><span class="Delimiter">();</span>
<span id="L73" class="LineNr"> 73 </span><span class="Delimiter">:(code)</span>
<span id="L74" class="LineNr"> 74 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L74'>init_op_types</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L75" class="LineNr"> 75 </span>  assert<span class="Delimiter">(</span><a href='031check_operands.cc.html#L66'>NUM_OPERAND_TYPES</a> &lt;= <span class="Comment">/*</span><span class="Comment">bits in a uint8_t</span><span class="Comment">*/</span><span class="Constant">8</span><span class="Delimiter">);</span>
<span id="L76" class="LineNr"> 76 </span>  <span class="Special"><a href='031check_operands.cc.html#L69'>Operand_type_name</a></span><span class="Delimiter">.</span>resize<span class="Delimiter">(</span><a href='031check_operands.cc.html#L66'>NUM_OPERAND_TYPES</a><span class="Delimiter">);</span>
<span id="L77" class="LineNr"> 77 </span>  <span class="Comment">#define DEF(type) Operand_type_name.at(type) = tolower(#type), put(Operand_type, tolower(#type), type);</span>
<span id="L78" class="LineNr"> 78 </span>  DEF<span class="Delimiter">(</span><a href='031check_operands.cc.html#L59'>MODRM</a><span class="Delimiter">);</span>
<span id="L79" class="LineNr"> 79 </span>  DEF<span class="Delimiter">(</span><a href='031check_operands.cc.html#L60'>SUBOP</a><span class="Delimiter">);</span>
<span id="L80" class="LineNr"> 80 </span>  DEF<span class="Delimiter">(</span><a href='031check_operands.cc.html#L61'>DISP8</a><span class="Delimiter">);</span>
<span id="L81" class="LineNr"> 81 </span>  DEF<span class="Delimiter">(</span><a href='031check_operands.cc.html#L62'>DISP16</a><span class="Delimiter">);</span>
<span id="L82" class="LineNr"> 82 </span>  DEF<span class="Delimiter">(</span><a href='031check_operands.cc.html#L63'>DISP32</a><span class="Delimiter">);</span>
<span id="L83" class="LineNr"> 83 </span>  DEF<span class="Delimiter">(</span><a href='031check_operands.cc.html#L64'>IMM8</a><span class="Delimiter">);</span>
<span id="L84" class="LineNr"> 84 </span>  DEF<span class="Delimiter">(</span><a href='031check_operands.cc.html#L65'>IMM32</a><span class="Delimiter">);</span>
<span id="L85" class="LineNr"> 85 </span>  <span class="Comment">#undef DEF</span>
<span id="L86" class="LineNr"> 86 </span><span class="Delimiter">}</span>
<span id="L87" class="LineNr"> 87 </span>
<span id="L88" class="LineNr"> 88 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
<span id="L89" class="LineNr"> 89 </span>map&lt;<span class="Comment">/*</span><span class="Comment">op</span><span class="Comment">*/</span>string<span class="Delimiter">,</span> <span class="Comment">/*</span><span class="Comment">bitvector</span><span class="Comment">*/</span><span class="Normal">uint8_t</span>&gt; <span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">;</span>
<span id="L90" class="LineNr"> 90 </span><span class="Normal">const</span> <span class="Normal">uint8_t</span> <a href='031check_operands.cc.html#L90'>INVALID_OPERANDS</a> = <span class="Constant">0xff</span><span class="Delimiter">;</span>  <span class="Comment">// no instruction uses all the operand types</span>
<span id="L91" class="LineNr"> 91 </span><span class="Delimiter">:(before &quot;End One-time Setup&quot;)</span>
<span id="L92" class="LineNr"> 92 </span><a href='031check_operands.cc.html#L94'>init_permitted_operands</a><span class="Delimiter">();</span>
<span id="L93" class="LineNr"> 93 </span><span class="Delimiter">:(code)</span>
<span id="L94" class="LineNr"> 94 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L94'>init_permitted_operands</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L95" class="LineNr"> 95 </span>  <span class="SalientComment">//// Class A: just op, no operands</span>
<span id="L96" class="LineNr"> 96 </span>  <span class="Comment">// halt</span>
<span id="L97" class="LineNr"> 97 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;f4&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L98" class="LineNr"> 98 </span>  <span class="Comment">// inc</span>
<span id="L99" class="LineNr"> 99 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;40&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L100" class="LineNr">100 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;41&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L101" class="LineNr">101 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;42&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L102" class="LineNr">102 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;43&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L103" class="LineNr">103 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;44&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L104" class="LineNr">104 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;45&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L105" class="LineNr">105 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;46&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L106" class="LineNr">106 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;47&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L107" class="LineNr">107 </span>  <span class="Comment">// dec</span>
<span id="L108" class="LineNr">108 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;48&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L109" class="LineNr">109 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;49&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L110" class="LineNr">110 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;4a&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L111" class="LineNr">111 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;4b&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L112" class="LineNr">112 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;4c&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L113" class="LineNr">113 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;4d&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L114" class="LineNr">114 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;4e&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L115" class="LineNr">115 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;4f&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L116" class="LineNr">116 </span>  <span class="Comment">// push</span>
<span id="L117" class="LineNr">117 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;50&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L118" class="LineNr">118 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;51&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L119" class="LineNr">119 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;52&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L120" class="LineNr">120 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;53&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L121" class="LineNr">121 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;54&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L122" class="LineNr">122 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;55&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L123" class="LineNr">123 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;56&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L124" class="LineNr">124 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;57&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L125" class="LineNr">125 </span>  <span class="Comment">// pop</span>
<span id="L126" class="LineNr">126 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;58&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L127" class="LineNr">127 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;59&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L128" class="LineNr">128 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;5a&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L129" class="LineNr">129 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;5b&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L130" class="LineNr">130 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;5c&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L131" class="LineNr">131 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;5d&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L132" class="LineNr">132 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;5e&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L133" class="LineNr">133 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;5f&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L134" class="LineNr">134 </span>  <span class="Comment">// return</span>
<span id="L135" class="LineNr">135 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;c3&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x00</span><span class="Delimiter">);</span>
<span id="L136" class="LineNr">136 </span>
<span id="L137" class="LineNr">137 </span>  <span class="SalientComment">//// Class B: just op and disp8</span>
<span id="L138" class="LineNr">138 </span>  <span class="Comment">//  imm32 imm8  disp32 |disp16  disp8 subop modrm</span>
<span id="L139" class="LineNr">139 </span>  <span class="Comment">//  0     0     0      |0       1     0     0</span>
<span id="L140" class="LineNr">140 </span>
<span id="L141" class="LineNr">141 </span>  <span class="Comment">// jump</span>
<span id="L142" class="LineNr">142 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;eb&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x04</span><span class="Delimiter">);</span>
<span id="L143" class="LineNr">143 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;74&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x04</span><span class="Delimiter">);</span>
<span id="L144" class="LineNr">144 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;75&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x04</span><span class="Delimiter">);</span>
<span id="L145" class="LineNr">145 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;7c&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x04</span><span class="Delimiter">);</span>
<span id="L146" class="LineNr">146 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;7d&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x04</span><span class="Delimiter">);</span>
<span id="L147" class="LineNr">147 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;7e&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x04</span><span class="Delimiter">);</span>
<span id="L148" class="LineNr">148 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;7f&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x04</span><span class="Delimiter">);</span>
<span id="L149" class="LineNr">149 </span>
<span id="L150" class="LineNr">150 </span>  <span class="SalientComment">//// Class D: just op and disp32</span>
<span id="L151" class="LineNr">151 </span>  <span class="Comment">//  imm32 imm8  disp32 |disp16  disp8 subop modrm</span>
<span id="L152" class="LineNr">152 </span>  <span class="Comment">//  0     0     1      |0       0     0     0</span>
<span id="L153" class="LineNr">153 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;e8&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x10</span><span class="Delimiter">);</span>  <span class="Comment">// call</span>
<span id="L154" class="LineNr">154 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;e9&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x10</span><span class="Delimiter">);</span>  <span class="Comment">// jump</span>
<span id="L155" class="LineNr">155 </span>
<span id="L156" class="LineNr">156 </span>  <span class="SalientComment">//// Class E: just op and imm8</span>
<span id="L157" class="LineNr">157 </span>  <span class="Comment">//  imm32 imm8  disp32 |disp16  disp8 subop modrm</span>
<span id="L158" class="LineNr">158 </span>  <span class="Comment">//  0     1     0      |0       0     0     0</span>
<span id="L159" class="LineNr">159 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;cd&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x20</span><span class="Delimiter">);</span>  <span class="Comment">// software interrupt</span>
<span id="L160" class="LineNr">160 </span>
<span id="L161" class="LineNr">161 </span>  <span class="SalientComment">//// Class F: just op and imm32</span>
<span id="L162" class="LineNr">162 </span>  <span class="Comment">//  imm32 imm8  disp32 |disp16  disp8 subop modrm</span>
<span id="L163" class="LineNr">163 </span>  <span class="Comment">//  1     0     0      |0       0     0     0</span>
<span id="L164" class="LineNr">164 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;05&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>  <span class="Comment">// add</span>
<span id="L165" class="LineNr">165 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;2d&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>  <span class="Comment">// subtract</span>
<span id="L166" class="LineNr">166 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;25&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>  <span class="Comment">// and</span>
<span id="L167" class="LineNr">167 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;0d&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>  <span class="Comment">// or</span>
<span id="L168" class="LineNr">168 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;35&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>  <span class="Comment">// xor</span>
<span id="L169" class="LineNr">169 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;3d&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>  <span class="Comment">// compare</span>
<span id="L170" class="LineNr">170 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;68&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>  <span class="Comment">// push</span>
<span id="L171" class="LineNr">171 </span>  <span class="Comment">// copy</span>
<span id="L172" class="LineNr">172 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;b8&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>
<span id="L173" class="LineNr">173 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;b9&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>
<span id="L174" class="LineNr">174 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;ba&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>
<span id="L175" class="LineNr">175 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;bb&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>
<span id="L176" class="LineNr">176 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;bc&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>
<span id="L177" class="LineNr">177 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;bd&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>
<span id="L178" class="LineNr">178 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;be&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>
<span id="L179" class="LineNr">179 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;bf&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x40</span><span class="Delimiter">);</span>
<span id="L180" class="LineNr">180 </span>
<span id="L181" class="LineNr">181 </span>  <span class="SalientComment">//// Class M: using ModR/M byte</span>
<span id="L182" class="LineNr">182 </span>  <span class="Comment">//  imm32 imm8  disp32 |disp16  disp8 subop modrm</span>
<span id="L183" class="LineNr">183 </span>  <span class="Comment">//  0     0     0      |0       0     0     1</span>
<span id="L184" class="LineNr">184 </span>
<span id="L185" class="LineNr">185 </span>  <span class="Comment">// add</span>
<span id="L186" class="LineNr">186 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;01&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L187" class="LineNr">187 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;03&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L188" class="LineNr">188 </span>  <span class="Comment">// subtract</span>
<span id="L189" class="LineNr">189 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;29&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L190" class="LineNr">190 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;2b&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L191" class="LineNr">191 </span>  <span class="Comment">// and</span>
<span id="L192" class="LineNr">192 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;21&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L193" class="LineNr">193 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;23&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L194" class="LineNr">194 </span>  <span class="Comment">// or</span>
<span id="L195" class="LineNr">195 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;09&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L196" class="LineNr">196 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;0b&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L197" class="LineNr">197 </span>  <span class="Comment">// xor</span>
<span id="L198" class="LineNr">198 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;31&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L199" class="LineNr">199 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;33&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L200" class="LineNr">200 </span>  <span class="Comment">// compare</span>
<span id="L201" class="LineNr">201 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;39&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L202" class="LineNr">202 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;3b&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L203" class="LineNr">203 </span>  <span class="Comment">// copy</span>
<span id="L204" class="LineNr">204 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;88&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L205" class="LineNr">205 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;89&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L206" class="LineNr">206 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;8a&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L207" class="LineNr">207 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;8b&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L208" class="LineNr">208 </span>  <span class="Comment">// swap</span>
<span id="L209" class="LineNr">209 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;87&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L210" class="LineNr">210 </span>  <span class="Comment">// copy address (lea)</span>
<span id="L211" class="LineNr">211 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;8d&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L212" class="LineNr">212 </span>  <span class="Comment">// pop</span>
<span id="L213" class="LineNr">213 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;8f&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L214" class="LineNr">214 </span>
<span id="L215" class="LineNr">215 </span>  <span class="SalientComment">//// Class O: op, ModR/M and subop (not r32)</span>
<span id="L216" class="LineNr">216 </span>  <span class="Comment">//  imm32 imm8  disp32 |disp16  disp8 subop modrm</span>
<span id="L217" class="LineNr">217 </span>  <span class="Comment">//  0     0     0      |0       0     1     1</span>
<span id="L218" class="LineNr">218 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;f7&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x03</span><span class="Delimiter">);</span>  <span class="Comment">// test/not/mul/div</span>
<span id="L219" class="LineNr">219 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;ff&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x03</span><span class="Delimiter">);</span>  <span class="Comment">// jump/push/call</span>
<span id="L220" class="LineNr">220 </span>
<span id="L221" class="LineNr">221 </span>  <span class="SalientComment">//// Class N: op, ModR/M and imm32</span>
<span id="L222" class="LineNr">222 </span>  <span class="Comment">//  imm32 imm8  disp32 |disp16  disp8 subop modrm</span>
<span id="L223" class="LineNr">223 </span>  <span class="Comment">//  1     0     0      |0       0     0     1</span>
<span id="L224" class="LineNr">224 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;c7&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x41</span><span class="Delimiter">);</span>  <span class="Comment">// copy</span>
<span id="L225" class="LineNr">225 </span>
<span id="L226" class="LineNr">226 </span>  <span class="SalientComment">//// Class P: op, ModR/M, subop (not r32) and imm32</span>
<span id="L227" class="LineNr">227 </span>  <span class="Comment">//  imm32 imm8  disp32 |disp16  disp8 subop modrm</span>
<span id="L228" class="LineNr">228 </span>  <span class="Comment">//  1     0     0      |0       0     1     1</span>
<span id="L229" class="LineNr">229 </span>  <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;81&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x43</span><span class="Delimiter">);</span>  <span class="Comment">// combine</span>
<span id="L230" class="LineNr">230 </span>
<span id="L231" class="LineNr">231 </span>  <span class="Comment">// End Init Permitted Operands</span>
<span id="L232" class="LineNr">232 </span><span class="Delimiter">}</span>
<span id="L233" class="LineNr">233 </span>
<span id="L234" class="LineNr">234 </span><span class="Delimiter">:(code)</span>
<span id="L235" class="LineNr">235 </span><span class="Comment">#define HAS(bitvector, bit)  ((bitvector) &amp; (1 &lt;&lt; (bit)))</span>
<span id="L236" class="LineNr">236 </span><span class="Comment">#define SET(bitvector, bit)  ((bitvector) | (1 &lt;&lt; (bit)))</span>
<span id="L237" class="LineNr">237 </span><span class="Comment">#define CLEAR(bitvector, bit)  ((bitvector) &amp; (~(1 &lt;&lt; (bit))))</span>
<span id="L238" class="LineNr">238 </span>
<span id="L239" class="LineNr">239 </span><span class="Normal">void</span> check_operands<span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">,</span> <span class="Normal">const</span> word&amp; op<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L240" class="LineNr">240 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_hex_byte<span class="Delimiter">(</span>op<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L241" class="LineNr">241 </span>  <span class="Normal">uint8_t</span> expected_bitvector = get<span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L89'>Permitted_operands</a></span><span class="Delimiter">,</span> op<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L242" class="LineNr">242 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>HAS<span class="Delimiter">(</span>expected_bitvector<span class="Delimiter">,</span> <a href='031check_operands.cc.html#L59'>MODRM</a><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L243" class="LineNr">243 </span>    <a href='031check_operands.cc.html#L337'>check_operands_modrm</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> op<span class="Delimiter">);</span>
<span id="L244" class="LineNr">244 </span>    <a href='031check_operands.cc.html#L364'>compare_bitvector_modrm</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> expected_bitvector<span class="Delimiter">,</span> op<span class="Delimiter">);</span>
<span id="L245" class="LineNr">245 </span>  <span class="Delimiter">}</span>
<span id="L246" class="LineNr">246 </span>  <span class="Normal">else</span> <span class="Delimiter">{</span>
<span id="L247" class="LineNr">247 </span>    <a href='031check_operands.cc.html#L253'>compare_bitvector</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> expected_bitvector<span class="Delimiter">,</span> op<span class="Delimiter">);</span>
<span id="L248" class="LineNr">248 </span>  <span class="Delimiter">}</span>
<span id="L249" class="LineNr">249 </span><span class="Delimiter">}</span>
<span id="L250" class="LineNr">250 </span>
<span id="L251" class="LineNr">251 </span><span class="Comment">//: Many instructions can be checked just by comparing bitvectors.</span>
<span id="L252" class="LineNr">252 </span>
<span id="L253" class="LineNr">253 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L253'>compare_bitvector</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">,</span> <span class="Normal">uint8_t</span> expected<span class="Delimiter">,</span> <span class="Normal">const</span> word&amp; op<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L254" class="LineNr">254 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='030---operands.cc.html#L379'>all_hex_bytes</a><span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &amp;&amp; <a href='031check_operands.cc.html#L288'>has_operands</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// deliberately programming in raw hex; we'll raise a warning elsewhere</span>
<span id="L255" class="LineNr">255 </span>  <span class="Normal">uint8_t</span> bitvector = <a href='031check_operands.cc.html#L279'>compute_operand_bitvector</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
<span id="L256" class="LineNr">256 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L224'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// duplicate operand type</span>
<span id="L257" class="LineNr">257 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>bitvector == expected<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// all good with this instruction</span>
<span id="L258" class="LineNr">258 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='031check_operands.cc.html#L66'>NUM_OPERAND_TYPES</a><span class="Delimiter">;</span>  ++i<span class="Delimiter">,</span> bitvector &gt;&gt;= <span class="Constant">1</span><span class="Delimiter">,</span> expected &gt;&gt;= <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L259" class="LineNr">259 </span><span class="CommentedCode">//?     cerr &lt;&lt; &quot;comparing &quot; &lt;&lt; HEXBYTE &lt;&lt; NUM(bitvector) &lt;&lt; &quot; with &quot; &lt;&lt; NUM(expected) &lt;&lt; '\n';</span>
<span id="L260" class="LineNr">260 </span>    <span class="Normal">if</span> <span class="Delimiter">((</span>bitvector &amp; <span class="Constant">0x1</span><span class="Delimiter">)</span> == <span class="Delimiter">(</span>expected &amp; <span class="Constant">0x1</span><span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// all good with this operand</span>
<span id="L261" class="LineNr">261 </span>    <span class="Normal">const</span> string&amp; optype = <span class="Special"><a href='031check_operands.cc.html#L69'>Operand_type_name</a></span><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L262" class="LineNr">262 </span>    <span class="Normal">if</span> <span class="Delimiter">((</span>bitvector &amp; <span class="Constant">0x1</span><span class="Delimiter">)</span> &gt; <span class="Delimiter">(</span>expected &amp; <span class="Constant">0x1</span><span class="Delimiter">))</span>
<span id="L263" class="LineNr">263 </span>      <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='031check_operands.cc.html#L271'>maybe_name</a><span class="Delimiter">(</span>op<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: unexpected &quot;</span> &lt;&lt; optype &lt;&lt; <span class="Constant">&quot; operand\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L264" class="LineNr">264 </span>    <span class="Normal">else</span>
<span id="L265" class="LineNr">265 </span>      <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='031check_operands.cc.html#L271'>maybe_name</a><span class="Delimiter">(</span>op<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: missing &quot;</span> &lt;&lt; optype &lt;&lt; <span class="Constant">&quot; operand\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L266" class="LineNr">266 </span>    <span class="Comment">// continue giving all errors for a single instruction</span>
<span id="L267" class="LineNr">267 </span>  <span class="Delimiter">}</span>
<span id="L268" class="LineNr">268 </span>  <span class="Comment">// ignore settings in any unused bits</span>
<span id="L269" class="LineNr">269 </span><span class="Delimiter">}</span>
<span id="L270" class="LineNr">270 </span>
<span id="L271" class="LineNr">271 </span>string <a href='031check_operands.cc.html#L271'>maybe_name</a><span class="Delimiter">(</span><span class="Normal">const</span> word&amp; op<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L272" class="LineNr">272 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_hex_byte<span class="Delimiter">(</span>op<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">;</span>
<span id="L273" class="LineNr">273 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span><span class="Special"><a href='010---vm.cc.html#L378'>Name</a></span><span class="Delimiter">,</span> op<span class="Delimiter">.</span>data<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">;</span>
<span id="L274" class="LineNr">274 </span>  <span class="Comment">// strip stuff in parens from the name</span>
<span id="L275" class="LineNr">275 </span>  <span class="Normal">const</span> string&amp; s = get<span class="Delimiter">(</span><span class="Special"><a href='010---vm.cc.html#L378'>Name</a></span><span class="Delimiter">,</span> op<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L276" class="LineNr">276 </span>  <span class="Identifier">return</span> <span class="Constant">&quot; (&quot;</span>+s<span class="Delimiter">.</span>substr<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">,</span> s<span class="Delimiter">.</span>find<span class="Delimiter">(</span><span class="Constant">&quot; (&quot;</span><span class="Delimiter">))</span>+<span class="Constant">')'</span><span class="Delimiter">;</span>
<span id="L277" class="LineNr">277 </span><span class="Delimiter">}</span>
<span id="L278" class="LineNr">278 </span>
<span id="L279" class="LineNr">279 </span><span class="Normal">uint32_t</span> <a href='031check_operands.cc.html#L279'>compute_operand_bitvector</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L280" class="LineNr">280 </span>  <span class="Normal">uint32_t</span> bitvector = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L281" class="LineNr">281 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Comment">/*</span><span class="Comment">skip op</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L282" class="LineNr">282 </span>    bitvector = bitvector | <a href='031check_operands.cc.html#L305'>bitvector_for_operand</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span id="L283" class="LineNr">283 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L224'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span> <a href='031check_operands.cc.html#L90'>INVALID_OPERANDS</a><span class="Delimiter">;</span>  <span class="Comment">// duplicate operand type</span>
<span id="L284" class="LineNr">284 </span>  <span class="Delimiter">}</span>
<span id="L285" class="LineNr">285 </span>  <span class="Identifier">return</span> bitvector<span class="Delimiter">;</span>
<span id="L286" class="LineNr">286 </span><span class="Delimiter">}</span>
<span id="L287" class="LineNr">287 </span>
<span id="L288" class="LineNr">288 </span><span class="Normal">bool</span> <a href='031check_operands.cc.html#L288'>has_operands</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L289" class="LineNr">289 </span>  <span class="Identifier">return</span> <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">)</span> &gt; <a href='031check_operands.cc.html#L292'>first_operand</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
<span id="L290" class="LineNr">290 </span><span class="Delimiter">}</span>
<span id="L291" class="LineNr">291 </span>
<span id="L292" class="LineNr">292 </span><span class="Normal">int</span> <a href='031check_operands.cc.html#L292'>first_operand</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L293" class="LineNr">293 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>data == <span class="Constant">&quot;0f&quot;</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">2</span><span class="Delimiter">;</span>
<span id="L294" class="LineNr">294 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>data == <span class="Constant">&quot;f2&quot;</span> || inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>data == <span class="Constant">&quot;f3&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L295" class="LineNr">295 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>data == <span class="Constant">&quot;0f&quot;</span><span class="Delimiter">)</span>
<span id="L296" class="LineNr">296 </span>      <span class="Identifier">return</span> <span class="Constant">3</span><span class="Delimiter">;</span>
<span id="L297" class="LineNr">297 </span>    <span class="Normal">else</span>
<span id="L298" class="LineNr">298 </span>      <span class="Identifier">return</span> <span class="Constant">2</span><span class="Delimiter">;</span>
<span id="L299" class="LineNr">299 </span>  <span class="Delimiter">}</span>
<span id="L300" class="LineNr">300 </span>  <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
<span id="L301" class="LineNr">301 </span><span class="Delimiter">}</span>
<span id="L302" class="LineNr">302 </span>
<span id="L303" class="LineNr">303 </span><span class="Comment">// Scan the metadata of 'w' and return the bit corresponding to any operand type.</span>
<span id="L304" class="LineNr">304 </span><span class="Comment">// Also raise an error if metadata contains multiple operand types.</span>
<span id="L305" class="LineNr">305 </span><span class="Normal">uint32_t</span> <a href='031check_operands.cc.html#L305'>bitvector_for_operand</a><span class="Delimiter">(</span><span class="Normal">const</span> word&amp; w<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L306" class="LineNr">306 </span>  <span class="Normal">uint32_t</span> bv = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L307" class="LineNr">307 </span>  <span class="Normal">bool</span> found =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L308" class="LineNr">308 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>w<span class="Delimiter">.</span>metadata<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L309" class="LineNr">309 </span>    <span class="Normal">const</span> string&amp; curr = w<span class="Delimiter">.</span>metadata<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L310" class="LineNr">310 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L70'>Operand_type</a></span><span class="Delimiter">,</span> curr<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// ignore unrecognized metadata</span>
<span id="L311" class="LineNr">311 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>found<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L312" class="LineNr">312 </span>      <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; w<span class="Delimiter">.</span>original &lt;&lt; <span class="Constant">&quot;' has conflicting operand types; it should have only one\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L313" class="LineNr">313 </span>      <span class="Identifier">return</span> <a href='031check_operands.cc.html#L90'>INVALID_OPERANDS</a><span class="Delimiter">;</span>
<span id="L314" class="LineNr">314 </span>    <span class="Delimiter">}</span>
<span id="L315" class="LineNr">315 </span>    bv = <span class="Delimiter">(</span><span class="Constant">1</span> &lt;&lt; get<span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L70'>Operand_type</a></span><span class="Delimiter">,</span> curr<span class="Delimiter">));</span>
<span id="L316" class="LineNr">316 </span>    found =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L317" class="LineNr">317 </span>  <span class="Delimiter">}</span>
<span id="L318" class="LineNr">318 </span>  <span class="Identifier">return</span> bv<span class="Delimiter">;</span>
<span id="L319" class="LineNr">319 </span><span class="Delimiter">}</span>
<span id="L320" class="LineNr">320 </span>
<span id="L321" class="LineNr">321 </span><span class="Delimiter">:(scenario conflicting_operand_type)</span>
<span id="L322" class="LineNr">322 </span><span class="Special">% Hide_errors = true;</span>
<span id="L323" class="LineNr">323 </span>== <span class="Constant">0x1</span>
<span id="L324" class="LineNr">324 </span>cd/software-interrupt <span class="Constant">80</span>/imm8/imm32
<span id="L325" class="LineNr">325 </span><span class="traceContains">+error: '80/imm8/imm32' has conflicting operand types; it should have only one</span>
<span id="L326" class="LineNr">326 </span>
<span id="L327" class="LineNr">327 </span><span class="Comment">//: Instructions computing effective addresses have more complex rules, so</span>
<span id="L328" class="LineNr">328 </span><span class="Comment">//: we'll hard-code a common set of instruction-decoding rules.</span>
<span id="L329" class="LineNr">329 </span>
<span id="L330" class="LineNr">330 </span><span class="Delimiter">:(scenario check_missing_mod_operand)</span>
<span id="L331" class="LineNr">331 </span><span class="Special">% Hide_errors = true;</span>
<span id="L332" class="LineNr">332 </span>== <span class="Constant">0x1</span>
<span id="L333" class="LineNr">333 </span><span class="Constant">81</span> <span class="Constant">0</span>/add/subop       <span class="Constant">3</span>/rm32/ebx <span class="Constant">1</span>/imm32
<span id="L334" class="LineNr">334 </span><span class="traceContains">+error: '81 0/add/subop 3/rm32/ebx 1/imm32' (combine rm32 with imm32 based on subop): missing mod operand</span>
<span id="L335" class="LineNr">335 </span>
<span id="L336" class="LineNr">336 </span><span class="Delimiter">:(code)</span>
<span id="L337" class="LineNr">337 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L337'>check_operands_modrm</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">,</span> <span class="Normal">const</span> word&amp; op<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L338" class="LineNr">338 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='030---operands.cc.html#L379'>all_hex_bytes</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// deliberately programming in raw hex; we'll raise a warning elsewhere</span>
<span id="L339" class="LineNr">339 </span>  <a href='031check_operands.cc.html#L398'>check_operand_metadata_present</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;mod&quot;</span><span class="Delimiter">,</span> op<span class="Delimiter">);</span>
<span id="L340" class="LineNr">340 </span>  <a href='031check_operands.cc.html#L398'>check_operand_metadata_present</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;rm32&quot;</span><span class="Delimiter">,</span> op<span class="Delimiter">);</span>
<span id="L341" class="LineNr">341 </span>  <span class="Comment">// no check for r32; some instructions don't use it; just assume it's 0 if missing</span>
<span id="L342" class="LineNr">342 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>op<span class="Delimiter">.</span>data == <span class="Constant">&quot;81&quot;</span> || op<span class="Delimiter">.</span>data == <span class="Constant">&quot;8f&quot;</span> || op<span class="Delimiter">.</span>data == <span class="Constant">&quot;ff&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>  <span class="Comment">// keep sync'd with 'help subop'</span>
<span id="L343" class="LineNr">343 </span>    <a href='031check_operands.cc.html#L398'>check_operand_metadata_present</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;subop&quot;</span><span class="Delimiter">,</span> op<span class="Delimiter">);</span>
<span id="L344" class="LineNr">344 </span>    <a href='031check_operands.cc.html#L403'>check_operand_metadata_absent</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;r32&quot;</span><span class="Delimiter">,</span> op<span class="Delimiter">,</span> <span class="Constant">&quot;should be replaced by subop&quot;</span><span class="Delimiter">);</span>
<span id="L345" class="LineNr">345 </span>  <span class="Delimiter">}</span>
<span id="L346" class="LineNr">346 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L224'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L347" class="LineNr">347 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>metadata<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;rm32&quot;</span><span class="Delimiter">).</span>data != <span class="Constant">&quot;4&quot;</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L348" class="LineNr">348 </span>  <span class="Comment">// SIB byte checks</span>
<span id="L349" class="LineNr">349 </span>  <span class="Normal">uint8_t</span> mod = <a href='011run.cc.html#L273'>hex_byte</a><span class="Delimiter">(</span>metadata<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;mod&quot;</span><span class="Delimiter">).</span>data<span class="Delimiter">);</span>
<span id="L350" class="LineNr">350 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>mod != <span class="Comment">/*</span><span class="Comment">direct</span><span class="Comment">*/</span><span class="Constant">3</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L351" class="LineNr">351 </span>    <a href='031check_operands.cc.html#L398'>check_operand_metadata_present</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;base&quot;</span><span class="Delimiter">,</span> op<span class="Delimiter">);</span>
<span id="L352" class="LineNr">352 </span>    <a href='031check_operands.cc.html#L398'>check_operand_metadata_present</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;index&quot;</span><span class="Delimiter">,</span> op<span class="Delimiter">);</span>  <span class="Comment">// otherwise why go to SIB?</span>
<span id="L353" class="LineNr">353 </span>  <span class="Delimiter">}</span>
<span id="L354" class="LineNr">354 </span>  <span class="Normal">else</span> <span class="Delimiter">{</span>
<span id="L355" class="LineNr">355 </span>    <a href='031check_operands.cc.html#L403'>check_operand_metadata_absent</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;base&quot;</span><span class="Delimiter">,</span> op<span class="Delimiter">,</span> <span class="Constant">&quot;direct mode&quot;</span><span class="Delimiter">);</span>
<span id="L356" class="LineNr">356 </span>    <a href='031check_operands.cc.html#L403'>check_operand_metadata_absent</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;index&quot;</span><span class="Delimiter">,</span> op<span class="Delimiter">,</span> <span class="Constant">&quot;direct mode&quot;</span><span class="Delimiter">);</span>
<span id="L357" class="LineNr">357 </span>  <span class="Delimiter">}</span>
<span id="L358" class="LineNr">358 </span>  <span class="Comment">// no check for scale; 0 (2**0 = 1) by default</span>
<span id="L359" class="LineNr">359 </span><span class="Delimiter">}</span>
<span id="L360" class="LineNr">360 </span>
<span id="L361" class="LineNr">361 </span><span class="Comment">// same as compare_bitvector, with a couple of exceptions for modrm-based instructions</span>
<span id="L362" class="LineNr">362 </span><span class="Comment">//   exception 1: ignore modrm bit since we already checked it above</span>
<span id="L363" class="LineNr">363 </span><span class="Comment">//   exception 2: modrm instructions can use a displacement on occasion</span>
<span id="L364" class="LineNr">364 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L364'>compare_bitvector_modrm</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">,</span> <span class="Normal">uint8_t</span> expected<span class="Delimiter">,</span> <span class="Normal">const</span> word&amp; op<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L365" class="LineNr">365 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='030---operands.cc.html#L379'>all_hex_bytes</a><span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &amp;&amp; <a href='031check_operands.cc.html#L288'>has_operands</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// deliberately programming in raw hex; we'll raise a warning elsewhere</span>
<span id="L366" class="LineNr">366 </span>  <span class="Normal">uint8_t</span> bitvector = <a href='031check_operands.cc.html#L279'>compute_operand_bitvector</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
<span id="L367" class="LineNr">367 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L224'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// duplicate operand type</span>
<span id="L368" class="LineNr">368 </span>  expected = CLEAR<span class="Delimiter">(</span>expected<span class="Delimiter">,</span> <a href='031check_operands.cc.html#L59'>MODRM</a><span class="Delimiter">);</span>  <span class="Comment">// exception 1</span>
<span id="L369" class="LineNr">369 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>bitvector == expected<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// all good with this instruction</span>
<span id="L370" class="LineNr">370 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='031check_operands.cc.html#L66'>NUM_OPERAND_TYPES</a><span class="Delimiter">;</span>  ++i<span class="Delimiter">,</span> bitvector &gt;&gt;= <span class="Constant">1</span><span class="Delimiter">,</span> expected &gt;&gt;= <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L371" class="LineNr">371 </span><span class="CommentedCode">//?     cerr &lt;&lt; &quot;comparing for modrm &quot; &lt;&lt; HEXBYTE &lt;&lt; NUM(bitvector) &lt;&lt; &quot; with &quot; &lt;&lt; NUM(expected) &lt;&lt; '\n';</span>
<span id="L372" class="LineNr">372 </span>    <span class="Normal">if</span> <span class="Delimiter">((</span>bitvector &amp; <span class="Constant">0x1</span><span class="Delimiter">)</span> == <span class="Delimiter">(</span>expected &amp; <span class="Constant">0x1</span><span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// all good with this operand</span>
<span id="L373" class="LineNr">373 </span>    <span class="Normal">const</span> string&amp; optype = <span class="Special"><a href='031check_operands.cc.html#L69'>Operand_type_name</a></span><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L374" class="LineNr">374 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>i == <a href='031check_operands.cc.html#L61'>DISP8</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L375" class="LineNr">375 </span>      <span class="Normal">int32_t</span> mod = <a href='011run.cc.html#L362'>parse_int</a><span class="Delimiter">(</span>metadata<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;mod&quot;</span><span class="Delimiter">).</span>data<span class="Delimiter">);</span>
<span id="L376" class="LineNr">376 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span>mod != <span class="Constant">1</span><span class="Delimiter">)</span>
<span id="L377" class="LineNr">377 </span>        <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='031check_operands.cc.html#L271'>maybe_name</a><span class="Delimiter">(</span>op<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: unexpected &quot;</span> &lt;&lt; optype &lt;&lt; <span class="Constant">&quot; operand\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L378" class="LineNr">378 </span>      <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// exception 2</span>
<span id="L379" class="LineNr">379 </span>    <span class="Delimiter">}</span>
<span id="L380" class="LineNr">380 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>i == <a href='031check_operands.cc.html#L63'>DISP32</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L381" class="LineNr">381 </span>      <span class="Normal">int32_t</span> mod = <a href='011run.cc.html#L362'>parse_int</a><span class="Delimiter">(</span>metadata<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;mod&quot;</span><span class="Delimiter">).</span>data<span class="Delimiter">);</span>
<span id="L382" class="LineNr">382 </span>      <span class="Normal">int32_t</span> rm32 = <a href='011run.cc.html#L362'>parse_int</a><span class="Delimiter">(</span>metadata<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;rm32&quot;</span><span class="Delimiter">).</span>data<span class="Delimiter">);</span>
<span id="L383" class="LineNr">383 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span>mod == <span class="Constant">0</span> &amp;&amp; rm32 == <span class="Constant">5</span><span class="Delimiter">)</span>
<span id="L384" class="LineNr">384 </span>        <span class="Delimiter">;</span>  <span class="Comment">// ok: special-case for loading address from disp32</span>
<span id="L385" class="LineNr">385 </span>      <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>mod != <span class="Constant">2</span><span class="Delimiter">)</span>
<span id="L386" class="LineNr">386 </span>        <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='031check_operands.cc.html#L271'>maybe_name</a><span class="Delimiter">(</span>op<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: unexpected &quot;</span> &lt;&lt; optype &lt;&lt; <span class="Constant">&quot; operand\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L387" class="LineNr">387 </span>      <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// exception 2</span>
<span id="L388" class="LineNr">388 </span>    <span class="Delimiter">}</span>
<span id="L389" class="LineNr">389 </span>    <span class="Normal">if</span> <span class="Delimiter">((</span>bitvector &amp; <span class="Constant">0x1</span><span class="Delimiter">)</span> &gt; <span class="Delimiter">(</span>expected &amp; <span class="Constant">0x1</span><span class="Delimiter">))</span>
<span id="L390" class="LineNr">390 </span>      <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='031check_operands.cc.html#L271'>maybe_name</a><span class="Delimiter">(</span>op<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: unexpected &quot;</span> &lt;&lt; optype &lt;&lt; <span class="Constant">&quot; operand\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L391" class="LineNr">391 </span>    <span class="Normal">else</span>
<span id="L392" class="LineNr">392 </span>      <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='031check_operands.cc.html#L271'>maybe_name</a><span class="Delimiter">(</span>op<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: missing &quot;</span> &lt;&lt; optype &lt;&lt; <span class="Constant">&quot; operand\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L393" class="LineNr">393 </span>    <span class="Comment">// continue giving all errors for a single instruction</span>
<span id="L394" class="LineNr">394 </span>  <span class="Delimiter">}</span>
<span id="L395" class="LineNr">395 </span>  <span class="Comment">// ignore settings in any unused bits</span>
<span id="L396" class="LineNr">396 </span><span class="Delimiter">}</span>
<span id="L397" class="LineNr">397 </span>
<span id="L398" class="LineNr">398 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L398'>check_operand_metadata_present</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; type<span class="Delimiter">,</span> <span class="Normal">const</span> word&amp; op<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L399" class="LineNr">399 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!has_operand_metadata<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> type<span class="Delimiter">))</span>
<span id="L400" class="LineNr">400 </span>    <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='031check_operands.cc.html#L271'>maybe_name</a><span class="Delimiter">(</span>op<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: missing &quot;</span> &lt;&lt; type &lt;&lt; <span class="Constant">&quot; operand\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L401" class="LineNr">401 </span><span class="Delimiter">}</span>
<span id="L402" class="LineNr">402 </span>
<span id="L403" class="LineNr">403 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L403'>check_operand_metadata_absent</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; type<span class="Delimiter">,</span> <span class="Normal">const</span> word&amp; op<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; msg<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L404" class="LineNr">404 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> type<span class="Delimiter">))</span>
<span id="L405" class="LineNr">405 </span>    <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='031check_operands.cc.html#L271'>maybe_name</a><span class="Delimiter">(</span>op<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: unexpected &quot;</span> &lt;&lt; type &lt;&lt; <span class="Constant">&quot; operand (&quot;</span> &lt;&lt; msg &lt;&lt; <span class="Constant">&quot;)\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L406" class="LineNr">406 </span><span class="Delimiter">}</span>
<span id="L407" class="LineNr">407 </span>
<span id="L408" class="LineNr">408 </span><span class="Delimiter">:(scenarios transform)</span>
<span id="L409" class="LineNr">409 </span><span class="Delimiter">:(scenario modrm_with_displacement)</span>
<span id="L410" class="LineNr">410 </span><span class="Special">% Reg[EAX].u = 0x1;</span>
<span id="L411" class="LineNr">411 </span>== <span class="Constant">0x1</span>
<span id="L412" class="LineNr">412 </span><span class="Comment"># just avoid null pointer</span>
<span id="L413" class="LineNr">413 </span>8b/copy <span class="Constant">1</span>/mod/lookup+disp8 <span class="Constant">0</span>/rm32/EAX <span class="Constant">2</span>/r32/EDX <span class="Constant">4</span>/disp8  <span class="Comment"># copy *(EAX+4) to EDX</span>
<span id="L414" class="LineNr">414 </span>$error: <span class="Constant">0</span>
<span id="L415" class="LineNr">415 </span><span class="Delimiter">:(scenarios run)</span>
<span id="L416" class="LineNr">416 </span>
<span id="L417" class="LineNr">417 </span><span class="Delimiter">:(scenario conflicting_operands_in_modrm_instruction)</span>
<span id="L418" class="LineNr">418 </span><span class="Special">% Hide_errors = true;</span>
<span id="L419" class="LineNr">419 </span>== <span class="Constant">0x1</span>
<span id="L420" class="LineNr">420 </span><span class="PreProc">0</span><span class="Constant">1</span>/add <span class="Constant">0</span>/mod <span class="Constant">3</span>/mod
<span id="L421" class="LineNr">421 </span><span class="traceContains">+error: '01/add 0/mod 3/mod' has conflicting mod operands</span>
<span id="L422" class="LineNr">422 </span>
<span id="L423" class="LineNr">423 </span><span class="Delimiter">:(scenario conflicting_operand_type_modrm)</span>
<span id="L424" class="LineNr">424 </span><span class="Special">% Hide_errors = true;</span>
<span id="L425" class="LineNr">425 </span>== <span class="Constant">0x1</span>
<span id="L426" class="LineNr">426 </span><span class="PreProc">0</span><span class="Constant">1</span>/add <span class="Constant">0</span>/mod <span class="Constant">3</span>/rm32/r32
<span id="L427" class="LineNr">427 </span><span class="traceContains">+error: '3/rm32/r32' has conflicting operand types; it should have only one</span>
<span id="L428" class="LineNr">428 </span>
<span id="L429" class="LineNr">429 </span><span class="Delimiter">:(scenario check_missing_rm32_operand)</span>
<span id="L430" class="LineNr">430 </span><span class="Special">% Hide_errors = true;</span>
<span id="L431" class="LineNr">431 </span>== <span class="Constant">0x1</span>
<span id="L432" class="LineNr">432 </span><span class="Constant">81</span> <span class="Constant">0</span>/add/subop <span class="Constant">0</span>/mod            <span class="Constant">1</span>/imm32
<span id="L433" class="LineNr">433 </span><span class="traceContains">+error: '81 0/add/subop 0/mod 1/imm32' (combine rm32 with imm32 based on subop): missing rm32 operand</span>
<span id="L434" class="LineNr">434 </span>
<span id="L435" class="LineNr">435 </span><span class="Delimiter">:(scenario check_missing_subop_operand)</span>
<span id="L436" class="LineNr">436 </span><span class="Special">% Hide_errors = true;</span>
<span id="L437" class="LineNr">437 </span>== <span class="Constant">0x1</span>
<span id="L438" class="LineNr">438 </span><span class="Constant">81</span>             <span class="Constant">0</span>/mod <span class="Constant">3</span>/rm32/ebx <span class="Constant">1</span>/imm32
<span id="L439" class="LineNr">439 </span><span class="traceContains">+error: '81 0/mod 3/rm32/ebx 1/imm32' (combine rm32 with imm32 based on subop): missing subop operand</span>
<span id="L440" class="LineNr">440 </span>
<span id="L441" class="LineNr">441 </span><span class="Delimiter">:(scenario check_missing_base_operand)</span>
<span id="L442" class="LineNr">442 </span><span class="Special">% Hide_errors = true;</span>
<span id="L443" class="LineNr">443 </span>== <span class="Constant">0x1</span>
<span id="L444" class="LineNr">444 </span><span class="Constant">81</span> <span class="Constant">0</span>/add/subop <span class="Constant">0</span>/mod/indirect <span class="Constant">4</span>/rm32/use-sib <span class="Constant">1</span>/imm32
<span id="L445" class="LineNr">445 </span><span class="traceContains">+error: '81 0/add/subop 0/mod/indirect 4/rm32/use-sib 1/imm32' (combine rm32 with imm32 based on subop): missing base operand</span>
<span id="L446" class="LineNr">446 </span>
<span id="L447" class="LineNr">447 </span><span class="Delimiter">:(scenario check_missing_index_operand)</span>
<span id="L448" class="LineNr">448 </span><span class="Special">% Hide_errors = true;</span>
<span id="L449" class="LineNr">449 </span>== <span class="Constant">0x1</span>
<span id="L450" class="LineNr">450 </span><span class="Constant">81</span> <span class="Constant">0</span>/add/subop <span class="Constant">0</span>/mod/indirect <span class="Constant">4</span>/rm32/use-sib <span class="Constant">0</span>/base <span class="Constant">1</span>/imm32
<span id="L451" class="LineNr">451 </span><span class="traceContains">+error: '81 0/add/subop 0/mod/indirect 4/rm32/use-sib 0/base 1/imm32' (combine rm32 with imm32 based on subop): missing index operand</span>
<span id="L452" class="LineNr">452 </span>
<span id="L453" class="LineNr">453 </span><span class="Delimiter">:(scenario check_missing_base_operand_2)</span>
<span id="L454" class="LineNr">454 </span><span class="Special">% Hide_errors = true;</span>
<span id="L455" class="LineNr">455 </span>== <span class="Constant">0x1</span>
<span id="L456" class="LineNr">456 </span><span class="Constant">81</span> <span class="Constant">0</span>/add/subop <span class="Constant">0</span>/mod/indirect <span class="Constant">4</span>/rm32/use-sib <span class="Constant">2</span>/index <span class="Constant">3</span>/scale <span class="Constant">1</span>/imm32
<span id="L457" class="LineNr">457 </span><span class="traceContains">+error: '81 0/add/subop 0/mod/indirect 4/rm32/use-sib 2/index 3/scale 1/imm32' (combine rm32 with imm32 based on subop): missing base operand</span>
<span id="L458" class="LineNr">458 </span>
<span id="L459" class="LineNr">459 </span><span class="Delimiter">:(scenario check_extra_displacement)</span>
<span id="L460" class="LineNr">460 </span><span class="Special">% Hide_errors = true;</span>
<span id="L461" class="LineNr">461 </span>== <span class="Constant">0x1</span>
<span id="L462" class="LineNr">462 </span><span class="Constant">89</span>/copy <span class="Constant">0</span>/mod/indirect <span class="Constant">0</span>/rm32/EAX <span class="Constant">1</span>/r32/ECX <span class="Constant">4</span>/disp8
<span id="L463" class="LineNr">463 </span><span class="traceContains">+error: '89/copy 0/mod/indirect 0/rm32/EAX 1/r32/ECX 4/disp8' (copy r32 to rm32): unexpected disp8 operand</span>
<span id="L464" class="LineNr">464 </span>
<span id="L465" class="LineNr">465 </span><span class="Delimiter">:(scenario check_base_operand_not_needed_in_direct_mode)</span>
<span id="L466" class="LineNr">466 </span>== <span class="Constant">0x1</span>
<span id="L467" class="LineNr">467 </span><span class="Constant">81</span> <span class="Constant">0</span>/add/subop <span class="Constant">3</span>/mod/indirect <span class="Constant">4</span>/rm32/use-sib <span class="Constant">1</span>/imm32
<span id="L468" class="LineNr">468 </span>$error: <span class="Constant">0</span>
<span id="L469" class="LineNr">469 </span>
<span id="L470" class="LineNr">470 </span><span class="SalientComment">//:: similarly handle multi-byte opcodes</span>
<span id="L471" class="LineNr">471 </span>
<span id="L472" class="LineNr">472 </span><span class="Delimiter">:(code)</span>
<span id="L473" class="LineNr">473 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L519'>check_operands_0f</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L474" class="LineNr">474 </span>  assert<span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>data == <span class="Constant">&quot;0f&quot;</span><span class="Delimiter">);</span>
<span id="L475" class="LineNr">475 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L476" class="LineNr">476 </span>    <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;opcode '0f' requires a second opcode\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L477" class="LineNr">477 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L478" class="LineNr">478 </span>  <span class="Delimiter">}</span>
<span id="L479" class="LineNr">479 </span>  <a href='011run.cc.html#L123'>word</a> op = <a href='031check_operands.cc.html#L36'>preprocess_op</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">));</span>
<span id="L480" class="LineNr">480 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span><span class="Special"><a href='010---vm.cc.html#L379'>Name_0f</a></span><span class="Delimiter">,</span> op<span class="Delimiter">.</span>data<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L481" class="LineNr">481 </span>    <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;unknown 2-byte opcode '0f &quot;</span> &lt;&lt; op<span class="Delimiter">.</span>data &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L482" class="LineNr">482 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L483" class="LineNr">483 </span>  <span class="Delimiter">}</span>
<span id="L484" class="LineNr">484 </span>  <a href='031check_operands.cc.html#L519'>check_operands_0f</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> op<span class="Delimiter">);</span>
<span id="L485" class="LineNr">485 </span><span class="Delimiter">}</span>
<span id="L486" class="LineNr">486 </span>
<span id="L487" class="LineNr">487 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L487'>check_operands_f3</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; <span class="Comment">/*</span><span class="Comment">unused</span><span class="Comment">*/</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L488" class="LineNr">488 </span>  <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;no supported opcodes starting with f3\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L489" class="LineNr">489 </span><span class="Delimiter">}</span>
<span id="L490" class="LineNr">490 </span>
<span id="L491" class="LineNr">491 </span><span class="Delimiter">:(scenario check_missing_disp32_operand)</span>
<span id="L492" class="LineNr">492 </span><span class="Special">% Hide_errors = true;</span>
<span id="L493" class="LineNr">493 </span>== <span class="Constant">0x1</span>
<span id="L494" class="LineNr">494 </span><span class="Comment"># instruction                     effective address                                                   operand     displacement    immediate</span>
<span id="L495" class="LineNr">495 </span><span class="Comment"># op          subop               mod             rm32          base        index         scale       r32</span>
<span id="L496" class="LineNr">496 </span><span class="Comment"># 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes</span>
<span id="L497" class="LineNr">497 </span>  <span class="Constant">0f</span> <span class="Constant">84</span>                                                                                                                                             <span class="Comment"># jmp if ZF to ??</span>
<span id="L498" class="LineNr">498 </span><span class="traceContains">+error: '0f 84' (jump disp32 bytes away if equal, if ZF is set): missing disp32 operand</span>
<span id="L499" class="LineNr">499 </span>
<span id="L500" class="LineNr">500 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
<span id="L501" class="LineNr">501 </span>map&lt;<span class="Comment">/*</span><span class="Comment">op</span><span class="Comment">*/</span>string<span class="Delimiter">,</span> <span class="Comment">/*</span><span class="Comment">bitvector</span><span class="Comment">*/</span><span class="Normal">uint8_t</span>&gt; <span class="Special"><a href='031check_operands.cc.html#L501'>Permitted_operands_0f</a></span><span class="Delimiter">;</span>
<span id="L502" class="LineNr">502 </span><span class="Delimiter">:(before &quot;End Init Permitted Operands&quot;)</span>
<span id="L503" class="LineNr">503 </span><span class="SalientComment">//// Class D: just op and disp32</span>
<span id="L504" class="LineNr">504 </span><span class="Comment">//  imm32 imm8  disp32 |disp16  disp8 subop modrm</span>
<span id="L505" class="LineNr">505 </span><span class="Comment">//  0     0     1      |0       0     0     0</span>
<span id="L506" class="LineNr">506 </span><a href='001help.cc.html#L253'>put_new</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L501'>Permitted_operands_0f</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;84&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x10</span><span class="Delimiter">);</span>
<span id="L507" class="LineNr">507 </span><a href='001help.cc.html#L253'>put_new</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L501'>Permitted_operands_0f</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;85&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x10</span><span class="Delimiter">);</span>
<span id="L508" class="LineNr">508 </span><a href='001help.cc.html#L253'>put_new</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L501'>Permitted_operands_0f</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;8c&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x10</span><span class="Delimiter">);</span>
<span id="L509" class="LineNr">509 </span><a href='001help.cc.html#L253'>put_new</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L501'>Permitted_operands_0f</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;8d&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x10</span><span class="Delimiter">);</span>
<span id="L510" class="LineNr">510 </span><a href='001help.cc.html#L253'>put_new</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L501'>Permitted_operands_0f</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;8e&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x10</span><span class="Delimiter">);</span>
<span id="L511" class="LineNr">511 </span><a href='001help.cc.html#L253'>put_new</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L501'>Permitted_operands_0f</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;8f&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x10</span><span class="Delimiter">);</span>
<span id="L512" class="LineNr">512 </span>
<span id="L513" class="LineNr">513 </span><span class="SalientComment">//// Class M: using ModR/M byte</span>
<span id="L514" class="LineNr">514 </span><span class="Comment">//  imm32 imm8  disp32 |disp16  disp8 subop modrm</span>
<span id="L515" class="LineNr">515 </span><span class="Comment">//  0     0     0      |0       0     0     1</span>
<span id="L516" class="LineNr">516 </span><a href='001help.cc.html#L253'>put_new</a><span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L501'>Permitted_operands_0f</a></span><span class="Delimiter">,</span> <span class="Constant">&quot;af&quot;</span><span class="Delimiter">,</span> <span class="Constant">0x01</span><span class="Delimiter">);</span>
<span id="L517" class="LineNr">517 </span>
<span id="L518" class="LineNr">518 </span><span class="Delimiter">:(code)</span>
<span id="L519" class="LineNr">519 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L519'>check_operands_0f</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">,</span> <span class="Normal">const</span> word&amp; op<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L520" class="LineNr">520 </span>  <span class="Normal">uint8_t</span> expected_bitvector = get<span class="Delimiter">(</span><span class="Special"><a href='031check_operands.cc.html#L501'>Permitted_operands_0f</a></span><span class="Delimiter">,</span> op<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L521" class="LineNr">521 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>HAS<span class="Delimiter">(</span>expected_bitvector<span class="Delimiter">,</span> <a href='031check_operands.cc.html#L59'>MODRM</a><span class="Delimiter">))</span>
<span id="L522" class="LineNr">522 </span>    <a href='031check_operands.cc.html#L337'>check_operands_modrm</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> op<span class="Delimiter">);</span>
<span id="L523" class="LineNr">523 </span>  <a href='031check_operands.cc.html#L526'>compare_bitvector_0f</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> CLEAR<span class="Delimiter">(</span>expected_bitvector<span class="Delimiter">,</span> <a href='031check_operands.cc.html#L59'>MODRM</a><span class="Delimiter">),</span> op<span class="Delimiter">);</span>
<span id="L524" class="LineNr">524 </span><span class="Delimiter">}</span>
<span id="L525" class="LineNr">525 </span>
<span id="L526" class="LineNr">526 </span><span class="Normal">void</span> <a href='031check_operands.cc.html#L526'>compare_bitvector_0f</a><span class="Delimiter">(</span><span class="Normal">const</span> line&amp; inst<span class="Delimiter">,</span> <span class="Normal">uint8_t</span> expected<span class="Delimiter">,</span> <span class="Normal">const</span> word&amp; op<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L527" class="LineNr">527 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='030---operands.cc.html#L379'>all_hex_bytes</a><span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &amp;&amp; <a href='031check_operands.cc.html#L288'>has_operands</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// deliberately programming in raw hex; we'll raise a warning elsewhere</span>
<span id="L528" class="LineNr">528 </span>  <span class="Normal">uint8_t</span> bitvector = <a href='031check_operands.cc.html#L279'>compute_operand_bitvector</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
<span id="L529" class="LineNr">529 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L224'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// duplicate operand type</span>
<span id="L530" class="LineNr">530 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>bitvector == expected<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// all good with this instruction</span>
<span id="L531" class="LineNr">531 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='031check_operands.cc.html#L66'>NUM_OPERAND_TYPES</a><span class="Delimiter">;</span>  ++i<span class="Delimiter">,</span> bitvector &gt;&gt;= <span class="Constant">1</span><span class="Delimiter">,</span> expected &gt;&gt;= <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L532" class="LineNr">532 </span><span class="CommentedCode">//?     cerr &lt;&lt; &quot;comparing &quot; &lt;&lt; HEXBYTE &lt;&lt; NUM(bitvector) &lt;&lt; &quot; with &quot; &lt;&lt; NUM(expected) &lt;&lt; '\n';</span>
<span id="L533" class="LineNr">533 </span>    <span class="Normal">if</span> <span class="Delimiter">((</span>bitvector &amp; <span class="Constant">0x1</span><span class="Delimiter">)</span> == <span class="Delimiter">(</span>expected &amp; <span class="Constant">0x1</span><span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// all good with this operand</span>
<span id="L534" class="LineNr">534 </span>    <span class="Normal">const</span> string&amp; optype = <span class="Special"><a href='031check_operands.cc.html#L69'>Operand_type_name</a></span><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L535" class="LineNr">535 </span>    <span class="Normal">if</span> <span class="Delimiter">((</span>bitvector &amp; <span class="Constant">0x1</span><span class="Delimiter">)</span> &gt; <span class="Delimiter">(</span>expected &amp; <span class="Constant">0x1</span><span class="Delimiter">))</span>
<span id="L536" class="LineNr">536 </span>      <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='031check_operands.cc.html#L544'>maybe_name_0f</a><span class="Delimiter">(</span>op<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: unexpected &quot;</span> &lt;&lt; optype &lt;&lt; <span class="Constant">&quot; operand\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L537" class="LineNr">537 </span>    <span class="Normal">else</span>
<span id="L538" class="LineNr">538 </span>      <a href='003trace.cc.html#L210'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='031check_operands.cc.html#L544'>maybe_name_0f</a><span class="Delimiter">(</span>op<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: missing &quot;</span> &lt;&lt; optype &lt;&lt; <span class="Constant">&quot; operand\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L539" class="LineNr">539 </span>    <span class="Comment">// continue giving all errors for a single instruction</span>
<span id="L540" class="LineNr">540 </span>  <span class="Delimiter">}</span>
<span id="L541" class="LineNr">541 </span>  <span class="Comment">// ignore settings in any unused bits</span>
<span id="L542" class="LineNr">542 </span><span class="Delimiter">}</span>
<span id="L543" class="LineNr">543 </span>
<span id="L544" class="LineNr">544 </span>string <a href='031check_operands.cc.html#L544'>maybe_name_0f</a><span class="Delimiter">(</span><span class="Normal">const</span> word&amp; op<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L545" class="LineNr">545 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_hex_byte<span class="Delimiter">(</span>op<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">;</span>
<span id="L546" class="LineNr">546 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span><span class="Special"><a href='010---vm.cc.html#L379'>Name_0f</a></span><span class="Delimiter">,</span> op<span class="Delimiter">.</span>data<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">;</span>
<span id="L547" class="LineNr">547 </span>  <span class="Comment">// strip stuff in parens from the name</span>
<span id="L548" class="LineNr">548 </span>  <span class="Normal">const</span> string&amp; s = get<span class="Delimiter">(</span><span class="Special"><a href='010---vm.cc.html#L379'>Name_0f</a></span><span class="Delimiter">,</span> op<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L549" class="LineNr">549 </span>  <span class="Identifier">return</span> <span class="Constant">&quot; (&quot;</span>+s<span class="Delimiter">.</span>substr<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">,</span> s<span class="Delimiter">.</span>find<span class="Delimiter">(</span><span class="Constant">&quot; (&quot;</span><span class="Delimiter">))</span>+<span class="Constant">')'</span><span class="Delimiter">;</span>
<span id="L550" class="LineNr">550 </span><span class="Delimiter">}</span>
<span id="L551" class="LineNr">551 </span>
<span id="L552" class="LineNr">552 </span>string <a href='031check_operands.cc.html#L552'>tolower</a><span class="Delimiter">(</span><span class="Normal">const</span> <span class="Normal">char</span>* s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L553" class="LineNr">553 </span>  ostringstream out<span class="Delimiter">;</span>
<span id="L554" class="LineNr">554 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">nada</span><span class="Comment">*/</span><span class="Delimiter">;</span>  *s<span class="Delimiter">;</span>  ++s<span class="Delimiter">)</span>
<span id="L555" class="LineNr">555 </span>    out &lt;&lt; <span class="Normal">static_cast</span>&lt;<span class="Normal">char</span>&gt;<span class="Delimiter">(</span><a href='031check_operands.cc.html#L552'>tolower</a><span class="Delimiter">(</span>*s<span class="Delimiter">));</span>
<span id="L556" class="LineNr">556 </span>  <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L557" class="LineNr">557 </span><span class="Delimiter">}</span>
<span id="L558" class="LineNr">558 </span>
<span id="L559" class="LineNr">559 </span><span class="Comment">#undef HAS</span>
<span id="L560" class="LineNr">560 </span><span class="Comment">#undef SET</span>
<span id="L561" class="LineNr">561 </span><span class="Comment">#undef CLEAR</span>
<span id="L562" class="LineNr">562 </span>
<span id="L563" class="LineNr">563 </span><span class="Delimiter">:(before &quot;End Includes&quot;)</span>
<span id="L564" class="LineNr">564 </span><span class="Comment">#include&lt;cctype&gt;</span>
</pre>
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