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| author | Kartik Agaram <vc@akkartik.com> | 2018-08-13 21:25:22 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-08-13 21:25:22 -0700 |
| commit | 7328af20a1921d9258a60803ee5367da97a6082e (patch) | |
| tree | e809d6cff85f290073a71982a5d24255848678ac /html/subx/036recommend_labels.cc.html | |
| parent | 5cec03b41425940ff5fa73c10ea8fb402a3b5ffa (diff) | |
| download | mu-7328af20a1921d9258a60803ee5367da97a6082e.tar.gz | |
4521
Diffstat (limited to 'html/subx/036recommend_labels.cc.html')
| -rw-r--r-- | html/subx/036recommend_labels.cc.html | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/html/subx/036recommend_labels.cc.html b/html/subx/036recommend_labels.cc.html new file mode 100644 index 00000000..1aa057b9 --- /dev/null +++ b/html/subx/036recommend_labels.cc.html @@ -0,0 +1,145 @@ +<!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/036recommend_labels.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; } +.traceContains { color: #008000; } +.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 labels, using non-label offsets should be unnecessary.</span> +<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: While SubX will allow programmers to write raw machine code, that isn't</span> +<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: *recommended* once we have more ergonomic alternatives.</span> +<span id="L4" class="LineNr"> 4 </span> +<span id="L5" class="LineNr"> 5 </span><span class="Delimiter">:(scenario warn_on_jump_offset)</span> +<span id="L6" class="LineNr"> 6 </span>== <span class="Constant">0x1</span> +<span id="L7" class="LineNr"> 7 </span>7e/jump-<span class="Normal">if</span> <span class="Constant">1</span>/disp8 +<span id="L8" class="LineNr"> 8 </span><span class="traceContains">+warn: '7e/jump-if 1/disp8': using raw offsets for jumps is not recommended; use labels instead</span> +<span id="L9" class="LineNr"> 9 </span> +<span id="L10" class="LineNr">10 </span><span class="Delimiter">:(scenarios transform)</span> +<span id="L11" class="LineNr">11 </span><span class="Delimiter">:(scenario warn_on_call_offset)</span> +<span id="L12" class="LineNr">12 </span>== <span class="Constant">0x1</span> +<span id="L13" class="LineNr">13 </span>e8/call <span class="Constant">1</span>/disp32 +<span id="L14" class="LineNr">14 </span><span class="traceContains">+warn: 'e8/call 1/disp32': using raw offsets for calls is not recommended; use labels instead</span> +<span id="L15" class="LineNr">15 </span><span class="Delimiter">:(scenarios run)</span> +<span id="L16" class="LineNr">16 </span> +<span id="L17" class="LineNr">17 </span><span class="Delimiter">:(before "Rewrite Labels(segment code)")</span> +<span id="L18" class="LineNr">18 </span>recommend_labels<span class="Delimiter">(</span>code<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#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L20" class="LineNr">20 </span><span class="Delimiter">:(code)</span> +<span id="L21" class="LineNr">21 </span><span class="Normal">void</span> recommend_labels<span class="Delimiter">(</span><span class="Normal">const</span> segment& code<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L22" class="LineNr">22 </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">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- check for numeric labels"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L23" class="LineNr">23 </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 < <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 id="L24" class="LineNr">24 </span> recommend_labels<span class="Delimiter">(</span>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="L25" class="LineNr">25 </span><span class="Delimiter">}</span> +<span id="L26" class="LineNr">26 </span> +<span id="L27" class="LineNr">27 </span><span class="Normal">void</span> recommend_labels<span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L28" class="LineNr">28 </span> <span class="Normal">int</span> idx = <a href='031check_operands.cc.html#L276'>first_operand</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span> +<span id="L29" class="LineNr">29 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>idx >= <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L30" class="LineNr">30 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>idx<span class="Delimiter">).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L31" class="LineNr">31 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='036recommend_labels.cc.html#L37'>is_jump</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> +<span id="L32" class="LineNr">32 </span> <a href='003trace.cc.html#L204'>warn</a> << <span class="Constant">"'"</span> << inst<span class="Delimiter">.</span>original << <span class="Constant">"': using raw offsets for jumps is not recommended; use labels instead</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L33" class="LineNr">33 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='036recommend_labels.cc.html#L47'>is_call</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> +<span id="L34" class="LineNr">34 </span> <a href='003trace.cc.html#L204'>warn</a> << <span class="Constant">"'"</span> << inst<span class="Delimiter">.</span>original << <span class="Constant">"': using raw offsets for calls is not recommended; use labels instead</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L35" class="LineNr">35 </span><span class="Delimiter">}</span> +<span id="L36" class="LineNr">36 </span> +<span id="L37" class="LineNr">37 </span><span class="Normal">bool</span> <a href='036recommend_labels.cc.html#L37'>is_jump</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L38" class="LineNr">38 </span> string op1 = <a href='031check_operands.cc.html#L39'>preprocess_op</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">;</span> +<span id="L39" class="LineNr">39 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>op1 == <span class="Constant">"0f"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L40" class="LineNr">40 </span> string op2 = <a href='031check_operands.cc.html#L39'>preprocess_op</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">;</span> +<span id="L41" class="LineNr">41 </span> <span class="Identifier">return</span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>find<span class="Delimiter">(</span>op1<span class="Delimiter">)</span> != <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L42" class="LineNr">42 </span> <span class="Delimiter">}</span> +<span id="L43" class="LineNr">43 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>op1 == <span class="Constant">"ff"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <a href='036recommend_labels.cc.html#L54'>subop</a><span class="Delimiter">(</span>inst<span class="Delimiter">)</span> == <span class="Comment">/*</span><span class="Comment"><a href='036recommend_labels.cc.html#L54'>subop</a> for opcode ff</span><span class="Comment">*/</span><span class="Constant">4</span><span class="Delimiter">;</span> +<span id="L44" class="LineNr">44 </span> <span class="Identifier">return</span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>find<span class="Delimiter">(</span>op1<span class="Delimiter">)</span> != <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L45" class="LineNr">45 </span><span class="Delimiter">}</span> +<span id="L46" class="LineNr">46 </span> +<span id="L47" class="LineNr">47 </span><span class="Normal">bool</span> <a href='036recommend_labels.cc.html#L47'>is_call</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L48" class="LineNr">48 </span> string op1 = <a href='031check_operands.cc.html#L39'>preprocess_op</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">;</span> +<span id="L49" class="LineNr">49 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>op1 == <span class="Constant">"e8"</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span> +<span id="L50" class="LineNr">50 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>op1 == <span class="Constant">"ff"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <a href='036recommend_labels.cc.html#L54'>subop</a><span class="Delimiter">(</span>inst<span class="Delimiter">)</span> == <span class="Comment">/*</span><span class="Comment"><a href='036recommend_labels.cc.html#L54'>subop</a> for opcode ff</span><span class="Comment">*/</span><span class="Constant">2</span><span class="Delimiter">;</span> +<span id="L51" class="LineNr">51 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span> <span class="Comment">// no multi-byte call opcodes</span> +<span id="L52" class="LineNr">52 </span><span class="Delimiter">}</span> +<span id="L53" class="LineNr">53 </span> +<span id="L54" class="LineNr">54 </span><span class="Normal">int</span> <a href='036recommend_labels.cc.html#L54'>subop</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L55" class="LineNr">55 </span> <span class="Normal">int</span> idx = <a href='031check_operands.cc.html#L276'>first_operand</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span> +<span id="L56" class="LineNr">56 </span> assert<span class="Delimiter">(</span>idx < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">));</span> +<span id="L57" class="LineNr">57 </span> <span class="Identifier">return</span> <span class="Delimiter">(</span><a href='030---operands.cc.html#L432'>parse_int</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>idx<span class="Delimiter">).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">)</span>>><span class="Constant">3</span><span class="Delimiter">)</span> & <span class="Constant">0x7</span><span class="Delimiter">;</span> +<span id="L58" class="LineNr">58 </span><span class="Delimiter">}</span> +<span id="L59" class="LineNr">59 </span> +<span id="L60" class="LineNr">60 </span><span class="Delimiter">:(before "End Globals")</span> +<span id="L61" class="LineNr">61 </span>set<string> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">;</span> +<span id="L62" class="LineNr">62 </span>set<string> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">;</span> +<span id="L63" class="LineNr">63 </span><span class="Delimiter">:(before "End One-time Setup")</span> +<span id="L64" class="LineNr">64 </span><a href='036recommend_labels.cc.html#L66'>init_jump_opcodes</a><span class="Delimiter">();</span> +<span id="L65" class="LineNr">65 </span><span class="Delimiter">:(code)</span> +<span id="L66" class="LineNr">66 </span><span class="Normal">void</span> <a href='036recommend_labels.cc.html#L66'>init_jump_opcodes</a><span class="Delimiter">()</span> <span class="Delimiter">{</span> +<span id="L67" class="LineNr">67 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"74"</span><span class="Delimiter">);</span> +<span id="L68" class="LineNr">68 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"75"</span><span class="Delimiter">);</span> +<span id="L69" class="LineNr">69 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"7c"</span><span class="Delimiter">);</span> +<span id="L70" class="LineNr">70 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"7d"</span><span class="Delimiter">);</span> +<span id="L71" class="LineNr">71 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"7e"</span><span class="Delimiter">);</span> +<span id="L72" class="LineNr">72 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"7f"</span><span class="Delimiter">);</span> +<span id="L73" class="LineNr">73 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"84"</span><span class="Delimiter">);</span> +<span id="L74" class="LineNr">74 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"85"</span><span class="Delimiter">);</span> +<span id="L75" class="LineNr">75 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"8c"</span><span class="Delimiter">);</span> +<span id="L76" class="LineNr">76 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"8d"</span><span class="Delimiter">);</span> +<span id="L77" class="LineNr">77 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"8e"</span><span class="Delimiter">);</span> +<span id="L78" class="LineNr">78 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"8f"</span><span class="Delimiter">);</span> +<span id="L79" class="LineNr">79 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"e9"</span><span class="Delimiter">);</span> +<span id="L80" class="LineNr">80 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"eb"</span><span class="Delimiter">);</span> +<span id="L81" class="LineNr">81 </span><span class="Delimiter">}</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |