about summary refs log blame commit diff stats
path: root/html/037global_variables.cc.html
blob: e59c8c821a38e8cd4e14eef09952ae4fe18ea37b (plain) (tree)
1
2
3
4
5
6
7
8
9



                                                                                          
                                          

                                                

                                                                                                               
                                                 

                       

                                                                                                 
                    
                                     

                                  
                                
                             
                            
                              

                                                                           
                             
                                   















                                                                                 
                                                  















                                                                              
                                                                                                                                             



                                                                                                                              
                                                                                                                                                   

                                                                                                                       
                                                                                                                                    
                                        
                                                                              
                                                                                                                                                                                                              
                                                                                                               
                                                                                                      
                                                                                                      
                                                                                                         


                                                                                                        
                                                                                                                                   
                                                                                                                                                  


                                                                            
                                                                                                            
                                                                                                                                                                                                                                                                                                          
                                                                               
                                                                                                                                                                                                                                                               



                                                                                                                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                            

                                                                                                                                                                                                                                          


                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

                                                                                                                                                                                                                                                                                                                                                                                                                   




                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                 



                                                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                          
                                                                                                                                          
                                                                                                                                                                              
                                                                                                                                                                                                                                                                                  
                                                                                                                                                                                      




                                                                                                                                                                                                                                                                                                                                                                                                                                             

                                                                                                                         

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    





                                                                                                                                                                       
                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

                                                                                                                                                                                                                                                                                                                                                                                                                   


                                                                           
                                                                                                                                                                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                  
                                                                             
                                                                                                                                                                                                                                                   


                                                                           
                                                                                                                                                                                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                 

                                                                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                               


                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      



                                                                                                                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                                                             



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                                                                                                                                                                                                          
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                              

                                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                               





                                                                                                                                                                                                                                                                                                                               
                                                                                    
                                                                                                                                                                                                                                                

                                                                                                                   
                                                                                                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                              


                                                                                                                          
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

                                                                                                                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                                                                       



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                                                                                                                                                                               




                                                                                                                                                      
                                                                                                                                         
                                          
                                                                                                              
                                                                                                                                                                                                                                                                                                             
                                                                                
                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                

                                                                                                                                                                                                                                                                                         





                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                                                     
                                                                                                                                                
                                                                                                                                    

                                                                                
                                                                                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                                                                                                                                                              



                                                                                                                                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                   
                                                                                                                                                             
                                                                                                                





                                                                                                            
                                                                                                                                    





                                                                                                                                                        
                                                                                                                                                                                                                                   
                                                                                                                                                             
                                                                                                                





                                                                                                             
                                                                                                                                    





                                                                                                                                                         
                                                                                                                                                                                                                                
                                                                                                                








                                                                                                                            
                                                                                                                                    




                                                                                                                     
                                                                                                                                                                                                                                                                                 

                                                                          
                                                                                                                                                                                                                                      
                                                                                                                






                                                                                                                          
                                                                                                                                    




                                                                                                                     
                                                                                                                                                                                                                                                                                 

                                                                          
                                                                                                                                                                                                                          
                                                                                                                                                             
                                                                                                                






                                                                                                            
                                                                                                                                    



                                                                                                                       
                                                                                                                                                                                                                                  
                                                                                                                





                                                                                                                                                    
                                                                                                                                                                                                                                                                                 

                                                                          
                                                                                                                                                                                                                                 





                                                                                                                
                                                                                                                                                                                                                                                                                 

                                                                          
                                                                                                                                                                                                                                                             
                                                                                             
                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                                                                                                                                                 


                                                                                                                                                           



                                     
<!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 - 037global_variables.cc</title>
<meta name="Generator" content="Vim/8.1">
<meta name="plugin-version" content="vim8.1_v1">
<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-light">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #c6c6c6; }
body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; }
a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.CommentedCode { color: #8a8a8a; }
.LineNr { }
.SpecialChar { color: #d70000; }
.Constant { color: #008787; }
.Comment { color: #005faf; }
.Delimiter { color: #c000c0; }
.Identifier { color: #af5f00; }
.Normal { color: #000000; background-color: #c6c6c6; padding-bottom: 1px; }
.cSpecial { color: #008000; }
.SalientComment { color: #0000af; }
-->
</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;
  }
  var 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();'>
<a href='https://github.com/akkartik/mu/blob/main/037global_variables.cc'>https://github.com/akkartik/mu/blob/main/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">&quot;== code 0x1\n&quot;</span>
<span id="L13" class="LineNr"> 13 </span>      <span class="Constant">&quot;b9  x/imm32\n&quot;</span>
<span id="L14" class="LineNr"> 14 </span>      <span class="Constant">&quot;== data 0x2000\n&quot;</span>
<span id="L15" class="LineNr"> 15 </span>      <span class="Constant">&quot;x:\n&quot;</span>
<span id="L16" class="LineNr"> 16 </span>      <span class="Constant">&quot;  00 00 00 00\n&quot;</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">&quot;transform: global variable 'x' is at address 0x00002000\n&quot;</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 &quot;End Transforms&quot;)</span>
<span id="L24" class="LineNr"> 24 </span><span class="SpecialChar"><a href='031transforms.cc.html#L4'>Transform</a></span><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&amp; 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">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;-- rewrite global variables&quot;</span> &lt;&lt; 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&lt;string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>&gt; 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&amp; p<span class="Delimiter">,</span> map&lt;string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>&gt;&amp; 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 &lt; <a href='001help.cc.html#L166'>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">&quot;code&quot;</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&amp; s<span class="Delimiter">,</span> map&lt;string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>&gt;&amp; 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 &lt; <a href='001help.cc.html#L166'>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&amp; 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 &lt; <a href='001help.cc.html#L166'>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&amp; 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#L263'>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 &gt; <span class="Constant">0</span><span class="Delimiter">)</span>
<span id="L58" class="LineNr"> 58 </span>          <a href='003trace.cc.html#L226'>raise</a> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;': global variable names can only be the first <a href='011run.cc.html#L127'>word</a> in a line.\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L59" class="LineNr"> 59 </span>        <span class="Normal">if</span> <span class="Delimiter">(</span><span class="SpecialChar"><a href='036labels.cc.html#L183'>Labels_file</a></span><span class="Delimiter">.</span>is_open<span class="Delimiter">())</span>
<span id="L60" class="LineNr"> 60 </span>          <span class="SpecialChar"><a href='036labels.cc.html#L183'>Labels_file</a></span> &lt;&lt; <span class="Constant">&quot;0x&quot;</span> &lt;&lt; <a href='010vm.cc.html#L408'>HEXWORD</a> &lt;&lt; current_address &lt;&lt; <span class="Constant">' '</span> &lt;&lt; variable &lt;&lt; <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#L229'>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> &lt;&lt; <span class="Constant">&quot;duplicate global '&quot;</span> &lt;&lt; variable &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; 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#L225'>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">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;global variable '&quot;</span> &lt;&lt; variable &lt;&lt; <span class="Constant">&quot;' is at address 0x&quot;</span> &lt;&lt; <a href='010vm.cc.html#L408'>HEXWORD</a> &lt;&lt; current_address &lt;&lt; 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&amp; 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 &lt; <a href='001help.cc.html#L166'>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">&quot;code&quot;</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&amp; p<span class="Delimiter">,</span> <span class="Normal">const</span> map&lt;string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>&gt;&amp; 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 &lt; <a href='001help.cc.html#L166'>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&amp; 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">&quot;code&quot;</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&amp; code<span class="Delimiter">,</span> <span class="Normal">const</span> map&lt;string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>&gt;&amp; 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 &lt; <a href='001help.cc.html#L166'>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&amp; 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 &lt; <a href='001help.cc.html#L166'>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&amp; 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> &lt;&lt; <span class="Constant">&quot;missing reference to global '&quot;</span> &lt;&lt; curr<span class="Delimiter">.</span>data &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; 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> &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;': can't refer to global variable '&quot;</span> &lt;&lt; curr<span class="Delimiter">.</span>data &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; 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">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;instruction after transform: '&quot;</span> &lt;&lt; data_to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; 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&amp; data<span class="Delimiter">,</span> <span class="Normal">const</span> map&lt;string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>&gt;&amp; 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 &lt; <a href='001help.cc.html#L166'>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&amp; 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 &lt; <a href='001help.cc.html#L166'>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&amp; 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#L591'>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">&quot;imm32&quot;</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">&quot;imm16&quot;</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">&quot;imm8&quot;</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">&quot;disp8&quot;</span><span class="Delimiter">))</span>
<span id="L129" class="LineNr">129 </span>            <a href='003trace.cc.html#L226'>raise</a> &lt;&lt; <span class="Constant">&quot;can't use /disp8 in a non-code segment\n&quot;</span> &lt;&lt; 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">&quot;disp16&quot;</span><span class="Delimiter">))</span>
<span id="L131" class="LineNr">131 </span>            <a href='003trace.cc.html#L226'>raise</a> &lt;&lt; <span class="Constant">&quot;can't use /disp16 in a non-code segment\n&quot;</span> &lt;&lt; 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">&quot;disp32&quot;</span><span class="Delimiter">))</span>
<span id="L133" class="LineNr">133 </span>            <a href='003trace.cc.html#L226'>raise</a> &lt;&lt; <span class="Constant">&quot;can't use /disp32 in a non-code segment\n&quot;</span> &lt;&lt; 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> &lt;&lt; <span class="Constant">&quot;missing reference to global '&quot;</span> &lt;&lt; curr<span class="Delimiter">.</span>data &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; 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">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; curr<span class="Delimiter">.</span>data &lt;&lt; <span class="Constant">&quot; maps to &quot;</span> &lt;&lt; <a href='010vm.cc.html#L408'>HEXWORD</a> &lt;&lt; get<span class="Delimiter">(</span>address<span class="Delimiter">,</span> curr<span class="Delimiter">.</span>data<span class="Delimiter">)</span> &lt;&lt; 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">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;after transform: '&quot;</span> &lt;&lt; data_to_string<span class="Delimiter">(</span>l<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; 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&amp; 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">&quot;imm32&quot;</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="SalientComment">//:: 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 &quot;Begin Transforms&quot;)</span>
<span id="L161" class="LineNr">161 </span><span class="SpecialChar"><a href='031transforms.cc.html#L4'>Transform</a></span><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&amp; 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&amp; code = *find<span class="Delimiter">(</span>p<span class="Delimiter">,</span> <span class="Constant">&quot;code&quot;</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 &lt; <a href='001help.cc.html#L166'>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&amp; 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 &lt; <a href='001help.cc.html#L166'>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&amp; 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">&quot;disp32&quot;</span><span class="Delimiter">)</span>
<span id="L171" class="LineNr">171 </span>          &amp;&amp; has_argument_metadata<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> <span class="Constant">&quot;mod&quot;</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">&quot;has_mod&quot;</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 &quot;End Valid Uses Of Global Variable(curr)&quot;)</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">&quot;disp32&quot;</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">&quot;has_mod&quot;</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&amp; w<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; 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 &lt; <a href='001help.cc.html#L166'>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>  <span class="SpecialChar">Hide_errors</span> = <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">&quot;== code 0x1\n&quot;</span>
<span id="L194" class="LineNr">194 </span>      <span class="Constant">&quot;eb/jump  x/disp8\n&quot;</span>
<span id="L195" class="LineNr">195 </span>      <span class="Constant">&quot;== data 0x2000\n&quot;</span>
<span id="L196" class="LineNr">196 </span>      <span class="Constant">&quot;x:\n&quot;</span>
<span id="L197" class="LineNr">197 </span>      <span class="Constant">&quot;  00 00 00 00\n&quot;</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">&quot;error: 'eb/jump x/disp8': can't refer to global variable 'x'\n&quot;</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">//?       &quot;error: can't jump to data (variable 'x')\n&quot;</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>  <span class="SpecialChar">Hide_errors</span> = <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">&quot;== code 0x1\n&quot;</span>
<span id="L210" class="LineNr">210 </span>      <span class="Constant">&quot;e8/call  x/disp32\n&quot;</span>
<span id="L211" class="LineNr">211 </span>      <span class="Constant">&quot;== data 0x2000\n&quot;</span>
<span id="L212" class="LineNr">212 </span>      <span class="Constant">&quot;x:\n&quot;</span>
<span id="L213" class="LineNr">213 </span>      <span class="Constant">&quot;  00 00 00 00\n&quot;</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">&quot;error: 'e8/call x/disp32': can't refer to global variable 'x'\n&quot;</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">//?       &quot;error: can't call to the data segment ('x')\n&quot;</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">&quot;== code 0x1\n&quot;</span>
<span id="L225" class="LineNr">225 </span>      <span class="Constant">&quot;b9  x/imm32\n&quot;</span>
<span id="L226" class="LineNr">226 </span>      <span class="Constant">&quot;== data 0x2000\n&quot;</span>
<span id="L227" class="LineNr">227 </span>      <span class="Constant">&quot;x:\n&quot;</span>
<span id="L228" class="LineNr">228 </span>      <span class="Constant">&quot;  y/imm32\n&quot;</span>
<span id="L229" class="LineNr">229 </span>      <span class="Constant">&quot;y:\n&quot;</span>
<span id="L230" class="LineNr">230 </span>      <span class="Constant">&quot;  00 00 00 00\n&quot;</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">&quot;load: 0x00002000 -&gt; 04\n&quot;</span>
<span id="L235" class="LineNr">235 </span>      <span class="Constant">&quot;load: 0x00002001 -&gt; 20\n&quot;</span>
<span id="L236" class="LineNr">236 </span>      <span class="Constant">&quot;load: 0x00002002 -&gt; 00\n&quot;</span>
<span id="L237" class="LineNr">237 </span>      <span class="Constant">&quot;load: 0x00002003 -&gt; 00\n&quot;</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">&quot;error&quot;</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">&quot;== code 0x1\n&quot;</span>
<span id="L245" class="LineNr">245 </span>      <span class="Constant">&quot;b9  x/imm32\n&quot;</span>
<span id="L246" class="LineNr">246 </span>      <span class="Constant">&quot;== data 0x2000\n&quot;</span>
<span id="L247" class="LineNr">247 </span>      <span class="Constant">&quot;x:\n&quot;</span>
<span id="L248" class="LineNr">248 </span>      <span class="Constant">&quot;  1/imm32\n&quot;</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">&quot;load: 0x00002000 -&gt; 01\n&quot;</span>
<span id="L253" class="LineNr">253 </span>      <span class="Constant">&quot;load: 0x00002001 -&gt; 00\n&quot;</span>
<span id="L254" class="LineNr">254 </span>      <span class="Constant">&quot;load: 0x00002002 -&gt; 00\n&quot;</span>
<span id="L255" class="LineNr">255 </span>      <span class="Constant">&quot;load: 0x00002003 -&gt; 00\n&quot;</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">&quot;error&quot;</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>  <span class="SpecialChar">Hide_errors</span> = <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">&quot;== code 0x1\n&quot;</span>
<span id="L264" class="LineNr">264 </span>      <span class="Constant">&quot;40/increment-EAX\n&quot;</span>
<span id="L265" class="LineNr">265 </span>      <span class="Constant">&quot;== data 0x2000\n&quot;</span>
<span id="L266" class="LineNr">266 </span>      <span class="Constant">&quot;x:\n&quot;</span>
<span id="L267" class="LineNr">267 </span>      <span class="Constant">&quot;x:\n&quot;</span>
<span id="L268" class="LineNr">268 </span>      <span class="Constant">&quot;  00\n&quot;</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">&quot;error: duplicate global 'x'\n&quot;</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">&quot;== code 0x1\n&quot;</span>
<span id="L278" class="LineNr">278 </span>      <span class="Constant">&quot;8b/copy 0/mod/indirect 5/rm32/.disp32 2/r32/EDX x/disp32\n&quot;</span>
<span id="L279" class="LineNr">279 </span>      <span class="Constant">&quot;== data 0x2000\n&quot;</span>
<span id="L280" class="LineNr">280 </span>      <span class="Constant">&quot;x:\n&quot;</span>
<span id="L281" class="LineNr">281 </span>      <span class="Constant">&quot;  00 00 00 00\n&quot;</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">&quot;error&quot;</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">&quot;== code 0x1\n&quot;</span>
<span id="L289" class="LineNr">289 </span>      <span class="Constant">&quot;foo:\n&quot;</span>
<span id="L290" class="LineNr">290 </span>      <span class="Constant">&quot;  e8/call bar/disp32\n&quot;</span>
<span id="L291" class="LineNr">291 </span>      <span class="Constant">&quot;bar:\n&quot;</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">&quot;error&quot;</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&amp; 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 &lt; <a href='001help.cc.html#L166'>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 &gt; <span class="Constant">0</span><span class="Delimiter">)</span> out &lt;&lt; <span class="Constant">' '</span><span class="Delimiter">;</span>
<span id="L300" class="LineNr">300 </span>    out &lt;&lt; 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 &lt; <a href='001help.cc.html#L166'>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 &lt;&lt; <span class="Constant">'/'</span> &lt;&lt; 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>
</body>
</html>
<!-- vim: set foldmethod=manual : -->