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<a href='https://github.com/akkartik/mu/blob/main/linux/bootstrap/037global_variables.cc'>https://github.com/akkartik/mu/blob/main/linux/bootstrap/037global_variables.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Global variables.</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment">//:</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: Global variables are just labels in the data segment.</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: However, they can only be used in imm32 and not disp32 arguments. And they</span>
<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: can't be used with jump and call instructions.</span>
<span id="L6" class="LineNr"> 6 </span><span class="Comment">//:</span>
<span id="L7" class="LineNr"> 7 </span><span class="Comment">//: This layer has much the same structure as rewriting labels.</span>
<span id="L8" class="LineNr"> 8 </span>
<span id="L9" class="LineNr"> 9 </span><span class="Delimiter">:(code)</span>
<span id="L10" class="LineNr"> 10 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L10'>test_global_variable</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L11" class="LineNr"> 11 </span> <a href='011run.cc.html#L82'>run</a><span class="Delimiter">(</span>
<span id="L12" class="LineNr"> 12 </span> <span class="Constant">"== code 0x1</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L13" class="LineNr"> 13 </span> <span class="Constant">"b9 x/imm32</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L14" class="LineNr"> 14 </span> <span class="Constant">"== data 0x2000</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L15" class="LineNr"> 15 </span> <span class="Constant">"x:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L16" class="LineNr"> 16 </span> <span class="Constant">" 00 00 00 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L17" class="LineNr"> 17 </span> <span class="Delimiter">);</span>
<span id="L18" class="LineNr"> 18 </span> <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a><span class="Delimiter">(</span>
<span id="L19" class="LineNr"> 19 </span> <span class="Constant">"transform: global variable 'x' is at address 0x00002000</span><span class="cSpecial">\n</span><span class="Constant">"</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">:(before "End Transforms")</span>
<span id="L24" class="LineNr"> 24 </span><a href='031transforms.cc.html#L4'>Transform</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='037global_variables.cc.html#L26'>rewrite_global_variables</a><span class="Delimiter">);</span>
<span id="L25" class="LineNr"> 25 </span><span class="Delimiter">:(code)</span>
<span id="L26" class="LineNr"> 26 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L26'>rewrite_global_variables</a><span class="Delimiter">(</span>program& p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L27" class="LineNr"> 27 </span> <a href='003trace.cc.html#L96'>trace</a><span class="Delimiter">(</span><span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- rewrite global variables"</span> << end<span class="Delimiter">();</span>
<span id="L28" class="LineNr"> 28 </span> <span class="Comment">// Begin rewrite_global_variables</span>
<span id="L29" class="LineNr"> 29 </span> map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>> address<span class="Delimiter">;</span>
<span id="L30" class="LineNr"> 30 </span> compute_addresses_for_global_variables<span class="Delimiter">(</span>p<span class="Delimiter">,</span> address<span class="Delimiter">);</span>
<span id="L31" class="LineNr"> 31 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L262'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L32" class="LineNr"> 32 </span> <a href='037global_variables.cc.html#L73'>drop_global_variables</a><span class="Delimiter">(</span>p<span class="Delimiter">);</span>
<span id="L33" class="LineNr"> 33 </span> <a href='037global_variables.cc.html#L80'>replace_global_variables_with_addresses</a><span class="Delimiter">(</span>p<span class="Delimiter">,</span> address<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><span class="Normal">void</span> compute_addresses_for_global_variables<span class="Delimiter">(</span><span class="Normal">const</span> program& p<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>>& address<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L37" class="LineNr"> 37 </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#L168'>SIZE</a><span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L106'>segments</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L38" class="LineNr"> 38 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L106'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span><a href='011run.cc.html#L111'>name</a> != <span class="Constant">"code"</span><span class="Delimiter">)</span>
<span id="L39" class="LineNr"> 39 </span> compute_addresses_for_global_variables<span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L106'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> address<span class="Delimiter">);</span>
<span id="L40" class="LineNr"> 40 </span> <span class="Delimiter">}</span>
<span id="L41" class="LineNr"> 41 </span><span class="Delimiter">}</span>
<span id="L42" class="LineNr"> 42 </span>
<span id="L43" class="LineNr"> 43 </span><span class="Normal">void</span> compute_addresses_for_global_variables<span class="Delimiter">(</span><span class="Normal">const</span> segment& s<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>>& address<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L44" class="LineNr"> 44 </span> <span class="Normal">int</span> current_address = s<span class="Delimiter">.</span>start<span class="Delimiter">;</span>
<span id="L45" class="LineNr"> 45 </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#L168'>SIZE</a><span class="Delimiter">(</span>s<span class="Delimiter">.</span><a href='011run.cc.html#L113'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L46" class="LineNr"> 46 </span> <span class="Normal">const</span> line& inst = s<span class="Delimiter">.</span><a href='011run.cc.html#L113'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L47" class="LineNr"> 47 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < <a href='001help.cc.html#L168'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L48" class="LineNr"> 48 </span> <span class="Normal">const</span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span>
<span id="L49" class="LineNr"> 49 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>*curr<span class="Delimiter">.</span>data<span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> != <span class="Constant">':'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L50" class="LineNr"> 50 </span> current_address += size_of<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
<span id="L51" class="LineNr"> 51 </span> <span class="Delimiter">}</span>
<span id="L52" class="LineNr"> 52 </span> <span class="Normal">else</span> <span class="Delimiter">{</span>
<span id="L53" class="LineNr"> 53 </span> string variable = <a href='036labels.cc.html#L276'>drop_last</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L54" class="LineNr"> 54 </span> <span class="Comment">// ensure variables look sufficiently different from raw hex</span>
<span id="L55" class="LineNr"> 55 </span> <a href='036labels.cc.html#L84'>check_valid_name</a><span class="Delimiter">(</span>variable<span class="Delimiter">);</span>
<span id="L56" class="LineNr"> 56 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L262'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L57" class="LineNr"> 57 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>j > <span class="Constant">0</span><span class="Delimiter">)</span>
<span id="L58" class="LineNr"> 58 </span> <a href='003trace.cc.html#L226'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': global variable names can only be the first <a href='011run.cc.html#L127'>word</a> in a line.</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span id="L59" class="LineNr"> 59 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='036labels.cc.html#L183'>Labels_file</a><span class="Delimiter">.</span>is_open<span class="Delimiter">())</span>
<span id="L60" class="LineNr"> 60 </span> <a href='036labels.cc.html#L183'>Labels_file</a> << <span class="Constant">"0x"</span> << <a href='010vm.cc.html#L408'>HEXWORD</a> << current_address << <span class="Constant">' '</span> << variable << <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
<span id="L61" class="LineNr"> 61 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L231'>contains_key</a><span class="Delimiter">(</span>address<span class="Delimiter">,</span> variable<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L62" class="LineNr"> 62 </span> <a href='003trace.cc.html#L226'>raise</a> << <span class="Constant">"duplicate global '"</span> << variable << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span id="L63" class="LineNr"> 63 </span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L64" class="LineNr"> 64 </span> <span class="Delimiter">}</span>
<span id="L65" class="LineNr"> 65 </span> <a href='001help.cc.html#L227'>put</a><span class="Delimiter">(</span>address<span class="Delimiter">,</span> variable<span class="Delimiter">,</span> current_address<span class="Delimiter">);</span>
<span id="L66" class="LineNr"> 66 </span> <a href='003trace.cc.html#L96'>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">"global variable '"</span> << variable << <span class="Constant">"' is at address 0x"</span> << <a href='010vm.cc.html#L408'>HEXWORD</a> << current_address << end<span class="Delimiter">();</span>
<span id="L67" class="LineNr"> 67 </span> <span class="Comment">// no modifying current_address; global variable definitions won't be in the final binary</span>
<span id="L68" class="LineNr"> 68 </span> <span class="Delimiter">}</span>
<span id="L69" class="LineNr"> 69 </span> <span class="Delimiter">}</span>
<span id="L70" class="LineNr"> 70 </span> <span class="Delimiter">}</span>
<span id="L71" class="LineNr"> 71 </span><span class="Delimiter">}</span>
<span id="L72" class="LineNr"> 72 </span>
<span id="L73" class="LineNr"> 73 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L73'>drop_global_variables</a><span class="Delimiter">(</span>program& p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L74" class="LineNr"> 74 </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#L168'>SIZE</a><span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L106'>segments</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L75" class="LineNr"> 75 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L106'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span><a href='011run.cc.html#L111'>name</a> != <span class="Constant">"code"</span><span class="Delimiter">)</span>
<span id="L76" class="LineNr"> 76 </span> <a href='036labels.cc.html#L205'>drop_labels</a><span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L106'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span id="L77" class="LineNr"> 77 </span> <span class="Delimiter">}</span>
<span id="L78" class="LineNr"> 78 </span><span class="Delimiter">}</span>
<span id="L79" class="LineNr"> 79 </span>
<span id="L80" class="LineNr"> 80 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L80'>replace_global_variables_with_addresses</a><span class="Delimiter">(</span>program& p<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>>& address<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L81" class="LineNr"> 81 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L106'>segments</a><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L82" class="LineNr"> 82 </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#L168'>SIZE</a><span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L106'>segments</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L83" class="LineNr"> 83 </span> segment& curr = p<span class="Delimiter">.</span><a href='011run.cc.html#L106'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L84" class="LineNr"> 84 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">.</span><a href='011run.cc.html#L111'>name</a> == <span class="Constant">"code"</span><span class="Delimiter">)</span>
<span id="L85" class="LineNr"> 85 </span> <a href='037global_variables.cc.html#L91'>replace_global_variables_in_code_segment</a><span class="Delimiter">(</span>curr<span class="Delimiter">,</span> address<span class="Delimiter">);</span>
<span id="L86" class="LineNr"> 86 </span> <span class="Normal">else</span>
<span id="L87" class="LineNr"> 87 </span> <a href='037global_variables.cc.html#L114'>replace_global_variables_in_data_segment</a><span class="Delimiter">(</span>curr<span class="Delimiter">,</span> address<span class="Delimiter">);</span>
<span id="L88" class="LineNr"> 88 </span> <span class="Delimiter">}</span>
<span id="L89" class="LineNr"> 89 </span><span class="Delimiter">}</span>
<span id="L90" class="LineNr"> 90 </span>
<span id="L91" class="LineNr"> 91 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L91'>replace_global_variables_in_code_segment</a><span class="Delimiter">(</span>segment& code<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>>& address<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L92" class="LineNr"> 92 </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#L168'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L113'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L93" class="LineNr"> 93 </span> line& inst = code<span class="Delimiter">.</span><a href='011run.cc.html#L113'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L94" class="LineNr"> 94 </span> <a href='011run.cc.html#L121'>line</a> new_inst<span class="Delimiter">;</span>
<span id="L95" class="LineNr"> 95 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < <a href='001help.cc.html#L168'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L96" class="LineNr"> 96 </span> <span class="Normal">const</span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span>
<span id="L97" class="LineNr"> 97 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>address<span class="Delimiter">,</span> curr<span class="Delimiter">.</span>data<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L98" class="LineNr"> 98 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!looks_like_hex_int<span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">))</span>
<span id="L99" class="LineNr"> 99 </span> <a href='003trace.cc.html#L226'>raise</a> << <span class="Constant">"missing reference to global '"</span> << curr<span class="Delimiter">.</span>data << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span id="L100" class="LineNr">100 </span> new_inst<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
<span id="L101" class="LineNr">101 </span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L102" class="LineNr">102 </span> <span class="Delimiter">}</span>
<span id="L103" class="LineNr">103 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!valid_use_of_global_variable<span class="Delimiter">(</span>curr<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L104" class="LineNr">104 </span> <a href='003trace.cc.html#L226'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': can't refer to global variable '"</span> << curr<span class="Delimiter">.</span>data << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span id="L105" class="LineNr">105 </span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L106" class="LineNr">106 </span> <span class="Delimiter">}</span>
<span id="L107" class="LineNr">107 </span> emit_hex_bytes<span class="Delimiter">(</span>new_inst<span class="Delimiter">,</span> get<span class="Delimiter">(</span>address<span class="Delimiter">,</span> curr<span class="Delimiter">.</span>data<span class="Delimiter">),</span> <span class="Constant">4</span><span class="Delimiter">);</span>
<span id="L108" class="LineNr">108 </span> <span class="Delimiter">}</span>
<span id="L109" class="LineNr">109 </span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>swap<span class="Delimiter">(</span>new_inst<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">);</span>
<span id="L110" class="LineNr">110 </span> <a href='003trace.cc.html#L96'>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">"instruction after transform: '"</span> << data_to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'"</span> << end<span class="Delimiter">();</span>
<span id="L111" class="LineNr">111 </span> <span class="Delimiter">}</span>
<span id="L112" class="LineNr">112 </span><span class="Delimiter">}</span>
<span id="L113" class="LineNr">113 </span>
<span id="L114" class="LineNr">114 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L114'>replace_global_variables_in_data_segment</a><span class="Delimiter">(</span>segment& data<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>>& address<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L115" class="LineNr">115 </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#L168'>SIZE</a><span class="Delimiter">(</span>data<span class="Delimiter">.</span><a href='011run.cc.html#L113'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L116" class="LineNr">116 </span> line& l = data<span class="Delimiter">.</span><a href='011run.cc.html#L113'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L117" class="LineNr">117 </span> <a href='011run.cc.html#L121'>line</a> new_l<span class="Delimiter">;</span>
<span id="L118" class="LineNr">118 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < <a href='001help.cc.html#L168'>SIZE</a><span class="Delimiter">(</span>l<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L119" class="LineNr">119 </span> <span class="Normal">const</span> word& curr = l<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span>
<span id="L120" class="LineNr">120 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>address<span class="Delimiter">,</span> curr<span class="Delimiter">.</span>data<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L121" class="LineNr">121 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='032operands.cc.html#L593'>looks_like_hex_int</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L122" class="LineNr">122 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_argument_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm32"</span><span class="Delimiter">))</span>
<span id="L123" class="LineNr">123 </span> emit_hex_bytes<span class="Delimiter">(</span>new_l<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">);</span>
<span id="L124" class="LineNr">124 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_argument_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm16"</span><span class="Delimiter">))</span>
<span id="L125" class="LineNr">125 </span> emit_hex_bytes<span class="Delimiter">(</span>new_l<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> <span class="Constant">2</span><span class="Delimiter">);</span>
<span id="L126" class="LineNr">126 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_argument_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm8"</span><span class="Delimiter">))</span>
<span id="L127" class="LineNr">127 </span> emit_hex_bytes<span class="Delimiter">(</span>new_l<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L128" class="LineNr">128 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_argument_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp8"</span><span class="Delimiter">))</span>
<span id="L129" class="LineNr">129 </span> <a href='003trace.cc.html#L226'>raise</a> << <span class="Constant">"can't use /disp8 in a non-code segment</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span id="L130" class="LineNr">130 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_argument_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp16"</span><span class="Delimiter">))</span>
<span id="L131" class="LineNr">131 </span> <a href='003trace.cc.html#L226'>raise</a> << <span class="Constant">"can't use /disp16 in a non-code segment</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span id="L132" class="LineNr">132 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_argument_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">))</span>
<span id="L133" class="LineNr">133 </span> <a href='003trace.cc.html#L226'>raise</a> << <span class="Constant">"can't use /disp32 in a non-code segment</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span id="L134" class="LineNr">134 </span> <span class="Normal">else</span>
<span id="L135" class="LineNr">135 </span> new_l<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
<span id="L136" class="LineNr">136 </span> <span class="Delimiter">}</span>
<span id="L137" class="LineNr">137 </span> <span class="Normal">else</span> <span class="Delimiter">{</span>
<span id="L138" class="LineNr">138 </span> <a href='003trace.cc.html#L226'>raise</a> << <span class="Constant">"missing reference to global '"</span> << curr<span class="Delimiter">.</span>data << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span id="L139" class="LineNr">139 </span> new_l<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
<span id="L140" class="LineNr">140 </span> <span class="Delimiter">}</span>
<span id="L141" class="LineNr">141 </span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L142" class="LineNr">142 </span> <span class="Delimiter">}</span>
<span id="L143" class="LineNr">143 </span> <a href='003trace.cc.html#L96'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << curr<span class="Delimiter">.</span>data << <span class="Constant">" maps to "</span> << <a href='010vm.cc.html#L408'>HEXWORD</a> << get<span class="Delimiter">(</span>address<span class="Delimiter">,</span> curr<span class="Delimiter">.</span>data<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span id="L144" class="LineNr">144 </span> emit_hex_bytes<span class="Delimiter">(</span>new_l<span class="Delimiter">,</span> get<span class="Delimiter">(</span>address<span class="Delimiter">,</span> curr<span class="Delimiter">.</span>data<span class="Delimiter">),</span> <span class="Constant">4</span><span class="Delimiter">);</span>
<span id="L145" class="LineNr">145 </span> <span class="Delimiter">}</span>
<span id="L146" class="LineNr">146 </span> l<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>swap<span class="Delimiter">(</span>new_l<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">);</span>
<span id="L147" class="LineNr">147 </span> <a href='003trace.cc.html#L96'>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">"after transform: '"</span> << data_to_string<span class="Delimiter">(</span>l<span class="Delimiter">)</span> << <span class="Constant">"'"</span> << end<span class="Delimiter">();</span>
<span id="L148" class="LineNr">148 </span> <span class="Delimiter">}</span>
<span id="L149" class="LineNr">149 </span><span class="Delimiter">}</span>
<span id="L150" class="LineNr">150 </span>
<span id="L151" class="LineNr">151 </span><span class="Normal">bool</span> <a href='037global_variables.cc.html#L151'>valid_use_of_global_variable</a><span class="Delimiter">(</span><span class="Normal">const</span> word& curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L152" class="LineNr">152 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_argument_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm32"</span><span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span id="L153" class="LineNr">153 </span> <span class="Comment">// End Valid Uses Of Global Variable(curr)</span>
<span id="L154" class="LineNr">154 </span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span id="L155" class="LineNr">155 </span><span class="Delimiter">}</span>
<span id="L156" class="LineNr">156 </span>
<span id="L157" class="LineNr">157 </span><span class="Comment">//:: a more complex sanity check for how we use global variables</span>
<span id="L158" class="LineNr">158 </span><span class="Comment">//: requires first saving some data early before we pack arguments</span>
<span id="L159" class="LineNr">159 </span>
<span id="L160" class="LineNr">160 </span><span class="Delimiter">:(after "Begin Transforms")</span>
<span id="L161" class="LineNr">161 </span><a href='031transforms.cc.html#L4'>Transform</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='037global_variables.cc.html#L163'>correlate_disp32_with_mod</a><span class="Delimiter">);</span>
<span id="L162" class="LineNr">162 </span><span class="Delimiter">:(code)</span>
<span id="L163" class="LineNr">163 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L163'>correlate_disp32_with_mod</a><span class="Delimiter">(</span>program& p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L164" class="LineNr">164 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L106'>segments</a><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L165" class="LineNr">165 </span> segment& code = *find<span class="Delimiter">(</span>p<span class="Delimiter">,</span> <span class="Constant">"code"</span><span class="Delimiter">);</span>
<span id="L166" class="LineNr">166 </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#L168'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L113'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L167" class="LineNr">167 </span> line& inst = code<span class="Delimiter">.</span><a href='011run.cc.html#L113'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L168" class="LineNr">168 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < <a href='001help.cc.html#L168'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L169" class="LineNr">169 </span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span>
<span id="L170" class="LineNr">170 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_argument_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">)</span>
<span id="L171" class="LineNr">171 </span> && has_argument_metadata<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">"mod"</span><span class="Delimiter">))</span>
<span id="L172" class="LineNr">172 </span> curr<span class="Delimiter">.</span>metadata<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><span class="Constant">"has_mod"</span><span class="Delimiter">);</span>
<span id="L173" class="LineNr">173 </span> <span class="Delimiter">}</span>
<span id="L174" class="LineNr">174 </span> <span class="Delimiter">}</span>
<span id="L175" class="LineNr">175 </span><span class="Delimiter">}</span>
<span id="L176" class="LineNr">176 </span>
<span id="L177" class="LineNr">177 </span><span class="Delimiter">:(before "End Valid Uses Of Global Variable(curr)")</span>
<span id="L178" class="LineNr">178 </span><span class="Normal">if</span> <span class="Delimiter">(</span>has_argument_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">))</span>
<span id="L179" class="LineNr">179 </span> <span class="Identifier">return</span> <a href='037global_variables.cc.html#L184'>has_metadata</a><span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"has_mod"</span><span class="Delimiter">);</span>
<span id="L180" class="LineNr">180 </span><span class="Comment">// todo: more sophisticated check, to ensure we don't use global variable</span>
<span id="L181" class="LineNr">181 </span><span class="Comment">// addresses as a real displacement added to other arguments.</span>
<span id="L182" class="LineNr">182 </span>
<span id="L183" class="LineNr">183 </span><span class="Delimiter">:(code)</span>
<span id="L184" class="LineNr">184 </span><span class="Normal">bool</span> <a href='037global_variables.cc.html#L184'>has_metadata</a><span class="Delimiter">(</span><span class="Normal">const</span> word& w<span class="Delimiter">,</span> <span class="Normal">const</span> string& m<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L185" class="LineNr">185 </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#L168'>SIZE</a><span class="Delimiter">(</span>w<span class="Delimiter">.</span>metadata<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
<span id="L186" class="LineNr">186 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>w<span class="Delimiter">.</span>metadata<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span> == m<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span id="L187" class="LineNr">187 </span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span id="L188" class="LineNr">188 </span><span class="Delimiter">}</span>
<span id="L189" class="LineNr">189 </span>
<span id="L190" class="LineNr">190 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L190'>test_global_variable_disallowed_in_jump</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L191" class="LineNr">191 </span> Hide_errors = <span class="Constant">true</span><span class="Delimiter">;</span>
<span id="L192" class="LineNr">192 </span> <a href='011run.cc.html#L82'>run</a><span class="Delimiter">(</span>
<span id="L193" class="LineNr">193 </span> <span class="Constant">"== code 0x1</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L194" class="LineNr">194 </span> <span class="Constant">"eb/jump x/disp8</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L195" class="LineNr">195 </span> <span class="Constant">"== data 0x2000</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L196" class="LineNr">196 </span> <span class="Constant">"x:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L197" class="LineNr">197 </span> <span class="Constant">" 00 00 00 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L198" class="LineNr">198 </span> <span class="Delimiter">);</span>
<span id="L199" class="LineNr">199 </span> <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a><span class="Delimiter">(</span>
<span id="L200" class="LineNr">200 </span> <span class="Constant">"error: 'eb/jump x/disp8': can't refer to global variable 'x'</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L201" class="LineNr">201 </span> <span class="Comment">// sub-optimal error message; should be</span>
<span id="L202" class="LineNr">202 </span><span class="CommentedCode">//? "error: can't jump to data (variable 'x')\n"</span>
<span id="L203" class="LineNr">203 </span> <span class="Delimiter">);</span>
<span id="L204" class="LineNr">204 </span><span class="Delimiter">}</span>
<span id="L205" class="LineNr">205 </span>
<span id="L206" class="LineNr">206 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L206'>test_global_variable_disallowed_in_call</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L207" class="LineNr">207 </span> Hide_errors = <span class="Constant">true</span><span class="Delimiter">;</span>
<span id="L208" class="LineNr">208 </span> <a href='011run.cc.html#L82'>run</a><span class="Delimiter">(</span>
<span id="L209" class="LineNr">209 </span> <span class="Constant">"== code 0x1</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L210" class="LineNr">210 </span> <span class="Constant">"e8/call x/disp32</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L211" class="LineNr">211 </span> <span class="Constant">"== data 0x2000</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L212" class="LineNr">212 </span> <span class="Constant">"x:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L213" class="LineNr">213 </span> <span class="Constant">" 00 00 00 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L214" class="LineNr">214 </span> <span class="Delimiter">);</span>
<span id="L215" class="LineNr">215 </span> <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a><span class="Delimiter">(</span>
<span id="L216" class="LineNr">216 </span> <span class="Constant">"error: 'e8/call x/disp32': can't refer to global variable 'x'</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L217" class="LineNr">217 </span> <span class="Comment">// sub-optimal error message; should be</span>
<span id="L218" class="LineNr">218 </span><span class="CommentedCode">//? "error: can't call to the data segment ('x')\n"</span>
<span id="L219" class="LineNr">219 </span> <span class="Delimiter">);</span>
<span id="L220" class="LineNr">220 </span><span class="Delimiter">}</span>
<span id="L221" class="LineNr">221 </span>
<span id="L222" class="LineNr">222 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L222'>test_global_variable_in_data_segment</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L223" class="LineNr">223 </span> <a href='011run.cc.html#L82'>run</a><span class="Delimiter">(</span>
<span id="L224" class="LineNr">224 </span> <span class="Constant">"== code 0x1</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L225" class="LineNr">225 </span> <span class="Constant">"b9 x/imm32</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L226" class="LineNr">226 </span> <span class="Constant">"== data 0x2000</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L227" class="LineNr">227 </span> <span class="Constant">"x:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L228" class="LineNr">228 </span> <span class="Constant">" y/imm32</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L229" class="LineNr">229 </span> <span class="Constant">"y:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L230" class="LineNr">230 </span> <span class="Constant">" 00 00 00 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L231" class="LineNr">231 </span> <span class="Delimiter">);</span>
<span id="L232" class="LineNr">232 </span> <span class="Comment">// check that we loaded 'x' with the address of 'y'</span>
<span id="L233" class="LineNr">233 </span> <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a><span class="Delimiter">(</span>
<span id="L234" class="LineNr">234 </span> <span class="Constant">"load: 0x00002000 -> 04</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L235" class="LineNr">235 </span> <span class="Constant">"load: 0x00002001 -> 20</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L236" class="LineNr">236 </span> <span class="Constant">"load: 0x00002002 -> 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L237" class="LineNr">237 </span> <span class="Constant">"load: 0x00002003 -> 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L238" class="LineNr">238 </span> <span class="Delimiter">);</span>
<span id="L239" class="LineNr">239 </span> <a href='003trace.cc.html#L294'>CHECK_TRACE_COUNT</a><span class="Delimiter">(</span><span class="Constant">"error"</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L240" class="LineNr">240 </span><span class="Delimiter">}</span>
<span id="L241" class="LineNr">241 </span>
<span id="L242" class="LineNr">242 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L242'>test_raw_number_with_imm32_in_data_segment</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L243" class="LineNr">243 </span> <a href='011run.cc.html#L82'>run</a><span class="Delimiter">(</span>
<span id="L244" class="LineNr">244 </span> <span class="Constant">"== code 0x1</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L245" class="LineNr">245 </span> <span class="Constant">"b9 x/imm32</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L246" class="LineNr">246 </span> <span class="Constant">"== data 0x2000</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L247" class="LineNr">247 </span> <span class="Constant">"x:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L248" class="LineNr">248 </span> <span class="Constant">" 1/imm32</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L249" class="LineNr">249 </span> <span class="Delimiter">);</span>
<span id="L250" class="LineNr">250 </span> <span class="Comment">// check that we loaded 'x' with the address of 1</span>
<span id="L251" class="LineNr">251 </span> <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a><span class="Delimiter">(</span>
<span id="L252" class="LineNr">252 </span> <span class="Constant">"load: 0x00002000 -> 01</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L253" class="LineNr">253 </span> <span class="Constant">"load: 0x00002001 -> 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L254" class="LineNr">254 </span> <span class="Constant">"load: 0x00002002 -> 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L255" class="LineNr">255 </span> <span class="Constant">"load: 0x00002003 -> 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L256" class="LineNr">256 </span> <span class="Delimiter">);</span>
<span id="L257" class="LineNr">257 </span> <a href='003trace.cc.html#L294'>CHECK_TRACE_COUNT</a><span class="Delimiter">(</span><span class="Constant">"error"</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L258" class="LineNr">258 </span><span class="Delimiter">}</span>
<span id="L259" class="LineNr">259 </span>
<span id="L260" class="LineNr">260 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L260'>test_duplicate_global_variable</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L261" class="LineNr">261 </span> Hide_errors = <span class="Constant">true</span><span class="Delimiter">;</span>
<span id="L262" class="LineNr">262 </span> <a href='011run.cc.html#L82'>run</a><span class="Delimiter">(</span>
<span id="L263" class="LineNr">263 </span> <span class="Constant">"== code 0x1</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L264" class="LineNr">264 </span> <span class="Constant">"40/increment-EAX</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L265" class="LineNr">265 </span> <span class="Constant">"== data 0x2000</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L266" class="LineNr">266 </span> <span class="Constant">"x:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L267" class="LineNr">267 </span> <span class="Constant">"x:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L268" class="LineNr">268 </span> <span class="Constant">" 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L269" class="LineNr">269 </span> <span class="Delimiter">);</span>
<span id="L270" class="LineNr">270 </span> <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a><span class="Delimiter">(</span>
<span id="L271" class="LineNr">271 </span> <span class="Constant">"error: duplicate global 'x'</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L272" class="LineNr">272 </span> <span class="Delimiter">);</span>
<span id="L273" class="LineNr">273 </span><span class="Delimiter">}</span>
<span id="L274" class="LineNr">274 </span>
<span id="L275" class="LineNr">275 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L275'>test_global_variable_disp32_with_modrm</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L276" class="LineNr">276 </span> <a href='011run.cc.html#L82'>run</a><span class="Delimiter">(</span>
<span id="L277" class="LineNr">277 </span> <span class="Constant">"== code 0x1</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L278" class="LineNr">278 </span> <span class="Constant">"8b/copy 0/mod/indirect 5/rm32/.disp32 2/r32/EDX x/disp32</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L279" class="LineNr">279 </span> <span class="Constant">"== data 0x2000</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L280" class="LineNr">280 </span> <span class="Constant">"x:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L281" class="LineNr">281 </span> <span class="Constant">" 00 00 00 00</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L282" class="LineNr">282 </span> <span class="Delimiter">);</span>
<span id="L283" class="LineNr">283 </span> <a href='003trace.cc.html#L294'>CHECK_TRACE_COUNT</a><span class="Delimiter">(</span><span class="Constant">"error"</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L284" class="LineNr">284 </span><span class="Delimiter">}</span>
<span id="L285" class="LineNr">285 </span>
<span id="L286" class="LineNr">286 </span><span class="Normal">void</span> <a href='037global_variables.cc.html#L286'>test_global_variable_disp32_with_call</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L287" class="LineNr">287 </span> transform<span class="Delimiter">(</span>
<span id="L288" class="LineNr">288 </span> <span class="Constant">"== code 0x1</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L289" class="LineNr">289 </span> <span class="Constant">"foo:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L290" class="LineNr">290 </span> <span class="Constant">" e8/call bar/disp32</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L291" class="LineNr">291 </span> <span class="Constant">"bar:</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span id="L292" class="LineNr">292 </span> <span class="Delimiter">);</span>
<span id="L293" class="LineNr">293 </span> <a href='003trace.cc.html#L294'>CHECK_TRACE_COUNT</a><span class="Delimiter">(</span><span class="Constant">"error"</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L294" class="LineNr">294 </span><span class="Delimiter">}</span>
<span id="L295" class="LineNr">295 </span>
<span id="L296" class="LineNr">296 </span>string <a href='037global_variables.cc.html#L296'>to_full_string</a><span class="Delimiter">(</span><span class="Normal">const</span> line& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L297" class="LineNr">297 </span> ostringstream out<span class="Delimiter">;</span>
<span id="L298" class="LineNr">298 </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#L168'>SIZE</a><span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L299" class="LineNr">299 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>i > <span class="Constant">0</span><span class="Delimiter">)</span> out << <span class="Constant">' '</span><span class="Delimiter">;</span>
<span id="L300" class="LineNr">300 </span> out << in<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>data<span class="Delimiter">;</span>
<span id="L301" class="LineNr">301 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < <a href='001help.cc.html#L168'>SIZE</a><span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>metadata<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span>
<span id="L302" class="LineNr">302 </span> out << <span class="Constant">'/'</span> << in<span class="Delimiter">.</span><a href='011run.cc.html#L122'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>metadata<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span>
<span id="L303" class="LineNr">303 </span> <span class="Delimiter">}</span>
<span id="L304" class="LineNr">304 </span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L305" class="LineNr">305 </span><span class="Delimiter">}</span>
</pre>
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