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<a href='https://github.com/akkartik/mu/blob/master/subx/039debug.cc'>https://github.com/akkartik/mu/blob/master/subx/039debug.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="SalientComment">//:: Some helpers for debugging.</span>
<span id="L2" class="LineNr"> 2 </span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: Load the 'map' file generated during 'subx --map translate' when running 'subx --map --dump run'.</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: (It'll only affect the trace.)</span>
<span id="L5" class="LineNr"> 5 </span>
<span id="L6" class="LineNr"> 6 </span><span class="Delimiter">:(before "End Globals")</span>
<span id="L7" class="LineNr"> 7 </span>map<<span class="Comment">/*</span><span class="Comment">address</span><span class="Comment">*/</span><span class="Normal">uint32_t</span><span class="Delimiter">,</span> string> <span class="Special"><a href='039debug.cc.html#L7'>Symbol_name</a></span><span class="Delimiter">;</span> <span class="Comment">// used only by 'subx run'</span>
<span id="L8" class="LineNr"> 8 </span><span class="Delimiter">:(before "End --map Settings")</span>
<span id="L9" class="LineNr"> 9 </span><a href='039debug.cc.html#L11'>load_map</a><span class="Delimiter">(</span><span class="Constant">"map"</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='039debug.cc.html#L11'>load_map</a><span class="Delimiter">(</span><span class="Normal">const</span> string& map_filename<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L12" class="LineNr">12 </span> ifstream fin<span class="Delimiter">(</span>map_filename<span class="Delimiter">.</span>c_str<span class="Delimiter">());</span>
<span id="L13" class="LineNr">13 </span> fin >> std::hex<span class="Delimiter">;</span>
<span id="L14" class="LineNr">14 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><a href='001help.cc.html#L274'>has_data</a><span class="Delimiter">(</span>fin<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L15" class="LineNr">15 </span> <span class="Normal">uint32_t</span> addr = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L16" class="LineNr">16 </span> fin >> addr<span class="Delimiter">;</span>
<span id="L17" class="LineNr">17 </span> string name<span class="Delimiter">;</span>
<span id="L18" class="LineNr">18 </span> fin >> name<span class="Delimiter">;</span>
<span id="L19" class="LineNr">19 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='039debug.cc.html#L7'>Symbol_name</a></span><span class="Delimiter">,</span> addr<span class="Delimiter">,</span> name<span class="Delimiter">);</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="Delimiter">:(after "Run One Instruction")</span>
<span id="L24" class="LineNr">24 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L256'>contains_key</a><span class="Delimiter">(</span><span class="Special"><a href='039debug.cc.html#L7'>Symbol_name</a></span><span class="Delimiter">,</span> <a href='010---vm.cc.html#L29'>EIP</a><span class="Delimiter">))</span>
<span id="L25" class="LineNr">25 </span> <a href='003trace.cc.html#L183'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"== label "</span> << get<span class="Delimiter">(</span><span class="Special"><a href='039debug.cc.html#L7'>Symbol_name</a></span><span class="Delimiter">,</span> <a href='010---vm.cc.html#L29'>EIP</a><span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span id="L26" class="LineNr">26 </span>
<span id="L27" class="LineNr">27 </span><span class="Comment">//: If a label starts with '$watch-', make a note of the effective address</span>
<span id="L28" class="LineNr">28 </span><span class="Comment">//: computed by the next instruction. Start dumping out its contents to the</span>
<span id="L29" class="LineNr">29 </span><span class="Comment">//: trace after every subsequent instruction.</span>
<span id="L30" class="LineNr">30 </span>
<span id="L31" class="LineNr">31 </span><span class="Delimiter">:(after "Run One Instruction")</span>
<span id="L32" class="LineNr">32 </span><a href='039debug.cc.html#L38'>dump_watch_points</a><span class="Delimiter">();</span>
<span id="L33" class="LineNr">33 </span><span class="Delimiter">:(before "End Globals")</span>
<span id="L34" class="LineNr">34 </span>map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>> <span class="Special"><a href='039debug.cc.html#L34'>Watch_points</a></span><span class="Delimiter">;</span>
<span id="L35" class="LineNr">35 </span><span class="Delimiter">:(before "End Reset")</span>
<span id="L36" class="LineNr">36 </span><span class="Special"><a href='039debug.cc.html#L34'>Watch_points</a></span><span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
<span id="L37" class="LineNr">37 </span><span class="Delimiter">:(code)</span>
<span id="L38" class="LineNr">38 </span><span class="Normal">void</span> <a href='039debug.cc.html#L38'>dump_watch_points</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L39" class="LineNr">39 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Special"><a href='039debug.cc.html#L34'>Watch_points</a></span><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L40" class="LineNr">40 </span> <a href='003trace.cc.html#L186'>dbg</a> << <span class="Constant">"watch points:"</span> << end<span class="Delimiter">();</span>
<span id="L41" class="LineNr">41 </span> <span class="Normal">for</span> <span class="Delimiter">(</span>map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>>::iterator p = <span class="Special"><a href='039debug.cc.html#L34'>Watch_points</a></span><span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != <span class="Special"><a href='039debug.cc.html#L34'>Watch_points</a></span><span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<span id="L42" class="LineNr">42 </span> <a href='003trace.cc.html#L186'>dbg</a> << <span class="Constant">" "</span> << p<span class="Delimiter">-></span>first << <span class="Constant">": "</span> << <a href='010---vm.cc.html#L413'>HEXWORD</a> << p<span class="Delimiter">-></span>second << <span class="Constant">" -> "</span> << <a href='010---vm.cc.html#L413'>HEXWORD</a> << <a href='010---vm.cc.html#L209'>read_mem_u32</a><span class="Delimiter">(</span>p<span class="Delimiter">-></span>second<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span id="L43" class="LineNr">43 </span><span class="Delimiter">}</span>
<span id="L44" class="LineNr">44 </span>
<span id="L45" class="LineNr">45 </span><span class="Delimiter">:(before "End Globals")</span>
<span id="L46" class="LineNr">46 </span>string <span class="Special">Watch_this_effective_address</span><span class="Delimiter">;</span>
<span id="L47" class="LineNr">47 </span><span class="Delimiter">:(after "Run One Instruction")</span>
<span id="L48" class="LineNr">48 </span><span class="Special">Watch_this_effective_address</span> = <span class="Constant">""</span><span class="Delimiter">;</span>
<span id="L49" class="LineNr">49 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L256'>contains_key</a><span class="Delimiter">(</span><span class="Special"><a href='039debug.cc.html#L7'>Symbol_name</a></span><span class="Delimiter">,</span> <a href='010---vm.cc.html#L29'>EIP</a><span class="Delimiter">)</span> && <a href='001help.cc.html#L102'>starts_with</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special"><a href='039debug.cc.html#L7'>Symbol_name</a></span><span class="Delimiter">,</span> <a href='010---vm.cc.html#L29'>EIP</a><span class="Delimiter">),</span> <span class="Constant">"$watch-"</span><span class="Delimiter">))</span>
<span id="L50" class="LineNr">50 </span> <span class="Special">Watch_this_effective_address</span> = get<span class="Delimiter">(</span><span class="Special"><a href='039debug.cc.html#L7'>Symbol_name</a></span><span class="Delimiter">,</span> <a href='010---vm.cc.html#L29'>EIP</a><span class="Delimiter">);</span>
<span id="L51" class="LineNr">51 </span><span class="Delimiter">:(after "Found effective_address(addr)")</span>
<span id="L52" class="LineNr">52 </span><span class="Normal">if</span> <span class="Delimiter">(</span>!<span class="Special">Watch_this_effective_address</span><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L53" class="LineNr">53 </span> <a href='003trace.cc.html#L186'>dbg</a> << <span class="Constant">"now watching "</span> << <a href='010---vm.cc.html#L413'>HEXWORD</a> << addr << <span class="Constant">" for "</span> << <span class="Special">Watch_this_effective_address</span> << end<span class="Delimiter">();</span>
<span id="L54" class="LineNr">54 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='039debug.cc.html#L34'>Watch_points</a></span><span class="Delimiter">,</span> <span class="Special">Watch_this_effective_address</span><span class="Delimiter">,</span> addr<span class="Delimiter">);</span>
<span id="L55" class="LineNr">55 </span><span class="Delimiter">}</span>
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