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<li class="navelem"><a class="el" href="../../dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="../../dir_1a96c2bb8e6464c69de5f985611044b4.html">decomp</a></li> </ul>
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<a href="../../dc/d83/decomp_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright (c) 2022, _xeroxz</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// All rights reserved.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// modification, are permitted provided that the following conditions are met:</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">//</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">// and/or other materials provided with the distribution.</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="comment">// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment">// POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="../../d2/d96/decomp_8hpp.html">decomp/decomp.hpp</a>&gt;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">namespace </span><a class="code" href="../../d9/dbd/namespacetheo_1_1decomp.html">theo::decomp</a> {</div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a35cfac16bd918d576b29e04388690d68"> 34</a></span>&#160;<a class="code" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a35cfac16bd918d576b29e04388690d68">decomp_t::decomp_t</a>(std::vector&lt;std::uint8_t&gt;&amp; lib, <a class="code" href="../../db/d77/classtheo_1_1recomp_1_1symbol__table__t.html">recomp::symbol_table_t</a>* syms)</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; : m_lib(lib), m_syms(syms) {}</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; </div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#ae23353a4293aa30969b6d3fa37359469"> 37</a></span>&#160;std::optional&lt;recomp::symbol_table_t*&gt; <a class="code" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#ae23353a4293aa30969b6d3fa37359469">decomp_t::decompose</a>(</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; std::string&amp; entry_sym) {</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="comment">// extract obj files from the archive file...</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; ar::view&lt;false&gt; <a class="code" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#aa728bde8ec1c5c28ec09f86adf427ae2">lib</a>(m_lib.data(), m_lib.size());</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; std::for_each(</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <a class="code" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#aa728bde8ec1c5c28ec09f86adf427ae2">lib</a>.begin(), <a class="code" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#aa728bde8ec1c5c28ec09f86adf427ae2">lib</a>.end(),</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; [&amp;](std::pair&lt;std::string_view, ar::entry_t&amp;&gt; itr) {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="comment">// if the entry isnt the symbol table or the string table</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="comment">// then we know its an obj file...</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; if (!itr.second.is_symbol_table() &amp;&amp; !itr.second.is_string_table()) {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; spdlog::info(<span class="stringliteral">&quot;extracted obj from archive: {}&quot;</span>, itr.first);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; std::vector&lt;std::uint8_t&gt; data(itr.second.begin(), itr.second.end());</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; m_objs.push_back(data);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; }</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; });</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; std::for_each(</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; m_objs.begin(), m_objs.end(), [&amp;](std::vector&lt;std::uint8_t&gt;&amp; img_data) {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; auto img = reinterpret_cast&lt;coff::image_t*&gt;(img_data.data());</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; for (auto idx = 0u; idx &lt; img-&gt;file_header.num_symbols; ++idx) {</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; auto sym = img-&gt;get_symbol(idx);</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; if (sym-&gt;section_index - 1 &gt; img-&gt;file_header.num_sections)</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; continue;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; auto sym_name = symbol_t::name(img, sym);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; if (sym_name.length()) {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; auto sym_hash = symbol_t::hash(sym_name.data());</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; auto sym_size =</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; sym-&gt;has_section()</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; ? next_sym(img, img-&gt;get_section(sym-&gt;section_index - 1),</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; sym)</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; : 0u;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; m_lookup_tbl[sym_hash].emplace_back(img, sym, sym_size);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; }</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; });</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="comment">// extract used symbols from objs and create a nice little set of them so that</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="comment">// we can easily decompose them... no need deal with every single symbol...</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; spdlog::info(<span class="stringliteral">&quot;extracted {} symbols being used...&quot;</span>,</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; ext_used_syms(entry_sym.data()));</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="comment">// generate symbols, populate section hash table, for each object file</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="comment">// extracted from the archive file...</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; std::for_each(m_used_syms.begin(), m_used_syms.end(), [&amp;](<a class="code" href="../../d9/dbd/namespacetheo_1_1decomp.html#abbf09e1f7eb9e42057ff9c9e8be41266">sym_data_t</a> <a class="code" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">data</a>) {</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; auto [img, sym, size] = data;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="comment">// populate section hash table with sections for the img of this</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="comment">// symbol... only populate the hash table if its not been populated for</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="comment">// this obj before...</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; if (m_processed_objs.emplace(img).second) {</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; for (auto idx = 0u; idx &lt; img-&gt;file_header.num_sections; ++idx) {</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; auto scn = img-&gt;get_section(idx);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; auto scn_sym_name =</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; std::string(scn-&gt;name.to_string(img-&gt;get_strings()))</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; .append(<span class="stringliteral">&quot;#&quot;</span>)</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; .append(std::to_string(idx))</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; .append(<span class="stringliteral">&quot;!&quot;</span>)</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; .append(std::to_string(img-&gt;file_header.timedate_stamp));</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="comment">// hash the name of the section + the index + the timestamp of the</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <span class="comment">// obj file it is in...</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; m_scn_hash_tbl.insert({scn, decomp::symbol_t::hash(scn_sym_name)});</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; }</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; }</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="comment">// if the symbol is a function then we are going to decompose it...</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="comment">// data symbols are handled after this...</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; if (sym-&gt;has_section()) {</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; if (sym-&gt;derived_type == coff::derived_type_id::function) {</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; auto scn = img-&gt;get_section(sym-&gt;section_index - 1);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; auto dcmp_type =</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; scn-&gt;name.to_string(img-&gt;get_strings()) == INSTR_SPLIT_SECTION_NAME</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; ? decomp::sym_type_t::instruction</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; : decomp::sym_type_t::function;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; auto fn_size = next_sym(img, scn, sym);</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; auto fn_bgn = scn-&gt;ptr_raw_data + reinterpret_cast&lt;std::uint8_t*&gt;(img) +</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; sym-&gt;value;</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; </div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; std::vector&lt;std::uint8_t&gt; fn(fn_bgn, fn_bgn + fn_size);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; decomp::routine_t rtn(sym, img, scn, fn, dcmp_type);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; auto syms = rtn.decompose();</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; m_syms-&gt;put_symbols(syms);</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; } <span class="keywordflow">else</span> if (sym-&gt;storage_class == coff::storage_class_id::public_symbol ||</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; sym-&gt;storage_class == coff::storage_class_id::private_symbol) {</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; auto scn = img-&gt;get_section(sym-&gt;section_index - 1);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; auto scn_sym = m_syms-&gt;sym_from_hash(m_scn_hash_tbl[scn]);</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="comment">// if the section doesnt have a symbol then make one and put it into</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <span class="comment">// the symbol table...</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; if (!scn_sym.has_value()) {</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; auto scn_sym_name =</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; std::string(scn-&gt;name.to_string(img-&gt;get_strings()))</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; .append(<span class="stringliteral">&quot;#&quot;</span>)</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; .append(std::to_string(sym-&gt;section_index - 1))</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; .append(<span class="stringliteral">&quot;!&quot;</span>)</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; .append(std::to_string(img-&gt;file_header.timedate_stamp));</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; </div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; std::vector&lt;std::uint8_t&gt; scn_data(scn-&gt;size_raw_data);</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; if (scn-&gt;characteristics.cnt_uninit_data) {</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; scn_data.insert(scn_data.begin(), scn-&gt;size_raw_data, 0);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; } else {</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; scn_data.insert(</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; scn_data.begin(),</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; reinterpret_cast&lt;std::uint8_t*&gt;(img) + scn-&gt;ptr_raw_data,</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; reinterpret_cast&lt;std::uint8_t*&gt;(img) + scn-&gt;ptr_raw_data +</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; scn-&gt;size_raw_data);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; }</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; </div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; std::vector&lt;recomp::reloc_t&gt; relocs;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; auto scn_relocs = reinterpret_cast&lt;coff::reloc_t*&gt;(</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; scn-&gt;ptr_relocs + reinterpret_cast&lt;std::uint8_t*&gt;(img));</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; for (auto idx = 0u; idx &lt; scn-&gt;num_relocs; ++idx) {</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; auto scn_reloc = &amp;scn_relocs[idx];</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; auto sym_reloc = img-&gt;get_symbol(scn_relocs[idx].symbol_index);</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; auto sym_name = symbol_t::name(img, sym_reloc);</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; auto sym_hash = decomp::symbol_t::hash(sym_name.data());</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; relocs.push_back(</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; recomp::reloc_t(scn_reloc-&gt;virtual_address - sym-&gt;value,</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; sym_hash, sym_name.data()));</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; }</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; </div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; decomp::symbol_t new_scn_sym(img, scn_sym_name, 0, scn_data, scn, {},</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; relocs, sym_type_t::section);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; m_syms-&gt;put_symbol(new_scn_sym);</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; }</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; </div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="comment">// create a symbol for the data...</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <a class="code" href="../../d9/dd5/classtheo_1_1decomp_1_1symbol__t.html">decomp::symbol_t</a> new_sym(img, symbol_t::name(img, sym).<a class="code" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">data</a>(),</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; sym-&gt;value, {}, scn, sym, {},</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <a class="code" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">sym_type_t::data</a>);</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; m_syms-&gt;put_symbol(new_sym);</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; }</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sym-&gt;storage_class ==</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; coff::storage_class_id::</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; external_definition) { <span class="comment">// else if the symbol has no</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; <span class="comment">// section... these symbols</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; <span class="comment">// require the linker to allocate</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <span class="comment">// space for them...</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; </div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; std::vector&lt;std::uint8_t&gt; data(sym-&gt;value, 0);</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; decomp::symbol_t bss_sym(img, symbol_t::name(img, sym).data(), {}, <a class="code" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">data</a>,</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; {}, sym, {}, <a class="code" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">sym_type_t::data</a>);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; </div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; m_syms-&gt;put_symbol(bss_sym);</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; }</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; });</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; </div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; <span class="comment">// return the extract symbols to the caller...</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <span class="keywordflow">return</span> m_syms;</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;}</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;std::uint32_t decomp_t::next_sym(coff::image_t* img,</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; coff::section_header_t* hdr,</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; coff::symbol_t* s) {</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; <span class="comment">// loop over all symbols in this object...</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; <span class="comment">// find the next symbol inside of the same section...</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; <span class="comment">// if there is no next symbol then we use the end of the section...</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; std::uint32_t res = hdr-&gt;size_raw_data;</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">auto</span> idx = 0u; idx &lt; img-&gt;file_header.num_symbols; ++idx) {</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <span class="keyword">auto</span> q = img-&gt;get_symbol(idx);</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; <span class="keywordflow">if</span> (q-&gt;derived_type == <a class="code" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acf6baee49c2ddb7e89724231bbd75d4a">coff::derived_type_id::function</a> &amp;&amp;</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; q-&gt;section_index == s-&gt;section_index &amp;&amp; q != s)</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <span class="keywordflow">if</span> (q-&gt;value &gt; s-&gt;value &amp;&amp; q-&gt;value &lt; res)</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; res = q-&gt;value;</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; }</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;}</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; </div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160;std::uint32_t decomp_t::ext_used_syms(<span class="keyword">const</span> std::string&amp;&amp; entry_sym) {</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; std::optional&lt;sym_data_t&gt; entry = get_symbol(entry_sym.data());</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="keywordflow">if</span> (!entry.has_value())</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; <span class="keywordflow">return</span> 0u;</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; std::set&lt;coff::symbol_t*&gt; cache;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; <span class="keyword">const</span> <span class="keyword">auto</span> finding_syms = [&amp;]() -&gt; <span class="keywordtype">bool</span> {</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">auto</span> itr = m_used_syms.begin(); itr != m_used_syms.end(); ++itr) {</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; <span class="keyword">auto</span> [img, sym, size] = *itr;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; <span class="keywordflow">if</span> (sym-&gt;has_section() &amp;&amp; !cache.count(sym) &amp;&amp; size) {</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; <span class="keyword">auto</span> scn = img-&gt;get_section(sym-&gt;section_index - 1);</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; <span class="keyword">auto</span> num_relocs = scn-&gt;num_relocs;</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; <span class="keyword">auto</span> relocs = <span class="keyword">reinterpret_cast&lt;</span>coff::reloc_t*<span class="keyword">&gt;</span>(</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; scn-&gt;ptr_relocs + <span class="keyword">reinterpret_cast&lt;</span>std::uint8_t*<span class="keyword">&gt;</span>(img));</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; </div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">auto</span> idx = 0u; idx &lt; num_relocs; ++idx) {</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; <span class="keyword">auto</span> reloc = &amp;relocs[idx];</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; <span class="comment">// if the reloc is inside of the current symbol...</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; <span class="keywordflow">if</span> (reloc-&gt;virtual_address &gt;= sym-&gt;value &amp;&amp;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; reloc-&gt;virtual_address &lt; sym-&gt;value + size) {</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="keyword">auto</span> reloc_sym = img-&gt;get_symbol(reloc-&gt;symbol_index);</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; <span class="keyword">auto</span> sym_name = symbol_t::name(img, reloc_sym);</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; entry = get_symbol(sym_name);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; <span class="keywordflow">if</span> (m_used_syms.emplace(entry.value()).second)</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; }</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; }</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; cache.emplace(sym);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; }</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160; }</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; };</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; </div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; m_used_syms.emplace(entry.value());</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; <span class="keywordflow">for</span> (m_used_syms.emplace(entry.value()); finding_syms();)</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; ;</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; </div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160; <span class="keywordflow">return</span> m_used_syms.size();</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160;}</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; </div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160;std::optional&lt;sym_data_t&gt; decomp_t::get_symbol(<span class="keyword">const</span> std::string_view&amp; name) {</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; coff::image_t* img = {};</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; coff::symbol_t* sym = {};</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; std::uint32_t size = {};</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; </div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; <span class="keyword">auto</span>&amp; syms = m_lookup_tbl[symbol_t::hash(name.data())];</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">auto</span> idx = 0u; idx &lt; syms.size(); ++idx) {</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; img = std::get&lt;0&gt;(syms[idx]);</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; sym = std::get&lt;1&gt;(syms[idx]);</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; size = std::get&lt;2&gt;(syms[idx]);</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160; <span class="keywordflow">if</span> (sym-&gt;has_section())</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; <span class="keywordflow">return</span> {{img, sym, size}};</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; }</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; </div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; <span class="keywordflow">if</span> (img &amp;&amp; sym)</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; <span class="keywordflow">return</span> {{img, sym, size}};</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; </div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; <span class="keywordflow">return</span> {};</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160;}</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; </div>
<div class="line"><a name="l00281"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a79c965ec0a996a936faae7f54b0e055e"> 281</a></span>&#160;std::vector&lt;routine_t&gt; decomp_t::rtns() {</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; <span class="keywordflow">return</span> m_rtns;</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160;}</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; </div>
<div class="line"><a name="l00285"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#aa728bde8ec1c5c28ec09f86adf427ae2"> 285</a></span>&#160;std::vector&lt;std::uint8_t&gt; decomp_t::lib() {</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; <span class="keywordflow">return</span> m_lib;</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160;}</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; </div>
<div class="line"><a name="l00289"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a81ae70b313a9ef24ea5d8f404699baef"> 289</a></span>&#160;std::vector&lt;std::vector&lt;std::uint8_t&gt;&gt; decomp_t::objs() {</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; <span class="keywordflow">return</span> m_objs;</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160;}</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160; </div>
<div class="line"><a name="l00293"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a8630f2ee0f4fb9516f5b20014e4c6120"> 293</a></span>&#160;<a class="code" href="../../db/d77/classtheo_1_1recomp_1_1symbol__table__t.html">recomp::symbol_table_t</a>* decomp_t::syms() {</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; <span class="keywordflow">return</span> m_syms;</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160;}</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; </div>
<div class="line"><a name="l00297"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a860dddc3a5d12231b685dbaa12a0db06"> 297</a></span>&#160;std::map&lt;coff::section_header_t*, std::size_t&gt;&amp; decomp_t::scn_hash_tbl() {</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; <span class="keywordflow">return</span> m_scn_hash_tbl;</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160;}</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160;} <span class="comment">// namespace theo::decomp</span></div>
<div class="ttc" id="aclasstheo_1_1decomp_1_1decomp__t_html_a35cfac16bd918d576b29e04388690d68"><div class="ttname"><a href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a35cfac16bd918d576b29e04388690d68">theo::decomp::decomp_t::decomp_t</a></div><div class="ttdeci">decomp_t(std::vector&lt; std::uint8_t &gt; &amp;lib, recomp::symbol_table_t *syms)</div><div class="ttdoc">the explicit constructor for decomp_t</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d83/decomp_8cpp_source.html#l00034">decomp.cpp:34</a></div></div>
<div class="ttc" id="aclasstheo_1_1decomp_1_1decomp__t_html_aa728bde8ec1c5c28ec09f86adf427ae2"><div class="ttname"><a href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#aa728bde8ec1c5c28ec09f86adf427ae2">theo::decomp::decomp_t::lib</a></div><div class="ttdeci">std::vector&lt; std::uint8_t &gt; lib()</div><div class="ttdoc">gets a vector of bytes consisting of the lib file.</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d83/decomp_8cpp_source.html#l00285">decomp.cpp:285</a></div></div>
<div class="ttc" id="aclasstheo_1_1decomp_1_1decomp__t_html_ae23353a4293aa30969b6d3fa37359469"><div class="ttname"><a href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#ae23353a4293aa30969b6d3fa37359469">theo::decomp::decomp_t::decompose</a></div><div class="ttdeci">std::optional&lt; recomp::symbol_table_t * &gt; decompose(std::string &amp;entry_sym)</div><div class="ttdoc">decomposes (extracts) the symbols used. this function determines all used symbols given the entry poi...</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d83/decomp_8cpp_source.html#l00037">decomp.cpp:37</a></div></div>
<div class="ttc" id="aclasstheo_1_1decomp_1_1symbol__t_html"><div class="ttname"><a href="../../d9/dd5/classtheo_1_1decomp_1_1symbol__t.html">theo::decomp::symbol_t</a></div><div class="ttdoc">symbol_t is an abstraction upon the coff symbol. this allows for easier manipulation of the symbol....</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d62/symbol_8hpp_source.html#l00053">symbol.hpp:53</a></div></div>
<div class="ttc" id="aclasstheo_1_1recomp_1_1symbol__table__t_html"><div class="ttname"><a href="../../db/d77/classtheo_1_1recomp_1_1symbol__table__t.html">theo::recomp::symbol_table_t</a></div><div class="ttdoc">this class is a high level wrapper for a hashmap that contains decomp::symbol_t values....</div><div class="ttdef"><b>Definition:</b> <a href="../../d0/d5e/symbol__table_8hpp_source.html#l00045">symbol_table.hpp:45</a></div></div>
<div class="ttc" id="adecomp_8hpp_html"><div class="ttname"><a href="../../d2/d96/decomp_8hpp.html">decomp.hpp</a></div></div>
<div class="ttc" id="anamespacetheo_1_1decomp_html"><div class="ttname"><a href="../../d9/dbd/namespacetheo_1_1decomp.html">theo::decomp</a></div><div class="ttdoc">the namespace that contains all of the decomposition related code.</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d96/decomp_8hpp_source.html#l00049">decomp.hpp:49</a></div></div>
<div class="ttc" id="anamespacetheo_1_1decomp_html_abbf09e1f7eb9e42057ff9c9e8be41266"><div class="ttname"><a href="../../d9/dbd/namespacetheo_1_1decomp.html#abbf09e1f7eb9e42057ff9c9e8be41266">theo::decomp::sym_data_t</a></div><div class="ttdeci">std::tuple&lt; coff::image_t *, coff::symbol_t *, std::uint32_t &gt; sym_data_t</div><div class="ttdoc">meta symbol data. consists of the coff image which contains the coff symbol, the coff symbol itself,...</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d96/decomp_8hpp_source.html#l00055">decomp.hpp:55</a></div></div>
<div class="ttc" id="anamespacetheo_1_1decomp_html_af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112"><div class="ttname"><a href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">theo::decomp::data</a></div><div class="ttdeci">@ data</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d62/symbol_8hpp_source.html#l00043">symbol.hpp:43</a></div></div>
<div class="ttc" id="anamespacetheo_1_1decomp_html_af96177687d0ad683c5897d8fa01135f9acf6baee49c2ddb7e89724231bbd75d4a"><div class="ttname"><a href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acf6baee49c2ddb7e89724231bbd75d4a">theo::decomp::function</a></div><div class="ttdeci">@ function</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d62/symbol_8hpp_source.html#l00043">symbol.hpp:43</a></div></div>
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