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authorKartik Agaram <vc@akkartik.com>2018-08-13 21:25:22 -0700
committerKartik Agaram <vc@akkartik.com>2018-08-13 21:25:22 -0700
commit7328af20a1921d9258a60803ee5367da97a6082e (patch)
treee809d6cff85f290073a71982a5d24255848678ac /html/subx/034discourage_raw_hex.cc.html
parent5cec03b41425940ff5fa73c10ea8fb402a3b5ffa (diff)
downloadmu-7328af20a1921d9258a60803ee5367da97a6082e.tar.gz
4521
Diffstat (limited to 'html/subx/034discourage_raw_hex.cc.html')
-rw-r--r--html/subx/034discourage_raw_hex.cc.html102


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@@ -0,0 +1,102 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>Mu - subx/034discourage_raw_hex.cc</title>
+<meta name="Generator" content="Vim/7.4">
+<meta name="plugin-version" content="vim7.4_v2">
+<meta name="syntax" content="cpp">
+<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
+<meta name="colorscheme" content="minimal">
+<style type="text/css">
+<!--
+pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; }
+body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; }
+a { color:#eeeeee; text-decoration: none; }
+a:hover { text-decoration: underline; }
+* { font-size: 12pt; font-size: 1em; }
+.Constant { color: #00a0a0; }
+.Comment { color: #9090ff; }
+.Comment a { color:#0000ee; text-decoration:underline; }
+.Delimiter { color: #800080; }
+.LineNr { color: #444444; }
+.Identifier { color: #c0a020; }
+.Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; }
+.PreProc { color: #800080; }
+.traceContains { color: #008000; }
+.traceAbsent { color: #c00000; }
+.cSpecial { color: #008000; }
+-->
+</style>
+
+<script type='text/javascript'>
+<!--
+
+/* function to open any folds containing a jumped-to line before jumping to it */
+function JumpToLine()
+{
+  var lineNum;
+  lineNum = window.location.hash;
+  lineNum = lineNum.substr(1); /* strip off '#' */
+
+  if (lineNum.indexOf('L') == -1) {
+    lineNum = 'L'+lineNum;
+  }
+  lineElem = document.getElementById(lineNum);
+  /* Always jump to new location even if the line was hidden inside a fold, or
+   * we corrected the raw number to a line ID.
+   */
+  if (lineElem) {
+    lineElem.scrollIntoView(true);
+  }
+  return true;
+}
+if ('onhashchange' in window) {
+  window.onhashchange = JumpToLine;
+}
+
+-->
+</script>
+</head>
+<body onload='JumpToLine();'>
+<pre id='vimCodeElement'>
+<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Now that we have operand metadata, start warning on instructions that</span>
+<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: don't use it.</span>
+<span id="L3" class="LineNr"> 3 </span><span class="Comment">//:</span>
+<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: While SubX will let you write raw machine code, don't do that unless you</span>
+<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: have a very good reason.</span>
+<span id="L6" class="LineNr"> 6 </span>
+<span id="L7" class="LineNr"> 7 </span><span class="Delimiter">:(before &quot;Pack Operands(segment code)&quot;)</span>
+<span id="L8" class="LineNr"> 8 </span><a href='034discourage_raw_hex.cc.html#L11'>warn_on_raw_hex</a><span class="Delimiter">(</span>code<span class="Delimiter">);</span>
+<span id="L9" class="LineNr"> 9 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L10" class="LineNr">10 </span><span class="Delimiter">:(code)</span>
+<span id="L11" class="LineNr">11 </span><span class="Normal">void</span> <a href='034discourage_raw_hex.cc.html#L11'>warn_on_raw_hex</a><span class="Delimiter">(</span><span class="Normal">const</span> segment&amp; code<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L12" class="LineNr">12 </span>  <a href='003trace.cc.html#L196'>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;-- <a href='003trace.cc.html#L204'>warn</a> on raw hex instructions&quot;</span> &lt;&lt; <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span>
+<span id="L13" class="LineNr">13 </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>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L14" class="LineNr">14 </span>    <span class="Normal">const</span> line&amp; inst = code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
+<span id="L15" class="LineNr">15 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>all_hex_bytes<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &amp;&amp; <a href='031check_operands.cc.html#L272'>has_operands</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L16" class="LineNr">16 </span>      <a href='003trace.cc.html#L204'>warn</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;': using raw hex is not recommended</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span>
+<span id="L17" class="LineNr">17 </span>      <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L18" class="LineNr">18 </span>    <span class="Delimiter">}</span>
+<span id="L19" class="LineNr">19 </span>  <span class="Delimiter">}</span>
+<span id="L20" class="LineNr">20 </span><span class="Delimiter">}</span>
+<span id="L21" class="LineNr">21 </span>
+<span id="L22" class="LineNr">22 </span><span class="Delimiter">:(scenarios transform)</span>
+<span id="L23" class="LineNr">23 </span><span class="Delimiter">:(scenario warn_on_hex_bytes_without_operands)</span>
+<span id="L24" class="LineNr">24 </span>== <span class="Constant">0x1</span>
+<span id="L25" class="LineNr">25 </span>bb 2a <span class="PreProc">0</span><span class="Constant">0</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="PreProc">0</span><span class="Constant">0</span>  <span class="Comment"># copy 0x2a (42) to EBX</span>
+<span id="L26" class="LineNr">26 </span><span class="traceContains">+warn: 'bb 2a 00 00 00': using raw hex is not recommended</span>
+<span id="L27" class="LineNr">27 </span>
+<span id="L28" class="LineNr">28 </span><span class="Delimiter">:(scenario warn_on_non_operand_metadata)</span>
+<span id="L29" class="LineNr">29 </span>== <span class="Constant">0x1</span>
+<span id="L30" class="LineNr">30 </span>bb 2a <span class="PreProc">0</span><span class="Constant">0</span>/foo <span class="PreProc">0</span><span class="Constant">0</span>/bar <span class="PreProc">0</span><span class="Constant">0</span>  <span class="Comment"># copy 0x2a (42) to EBX</span>
+<span id="L31" class="LineNr">31 </span><span class="traceContains">+warn: 'bb 2a 00/foo 00/bar 00': using raw hex is not recommended</span>
+<span id="L32" class="LineNr">32 </span>
+<span id="L33" class="LineNr">33 </span><span class="Delimiter">:(scenario no_warn_on_instructions_without_operands)</span>
+<span id="L34" class="LineNr">34 </span>== <span class="Constant">0x1</span>
+<span id="L35" class="LineNr">35 </span><span class="Constant">55</span>  <span class="Comment"># push EBP</span>
+<span id="L36" class="LineNr">36 </span><span class="traceAbsent">-warn: '55': using raw hex is not recommended</span>
+</pre>
+</body>
+</html>
+<!-- vim: set foldmethod=manual : -->

 

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