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<div id="projectbrief">Jit linker, symbol mapper, and obfuscator</div>
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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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<div class="headertitle"><div class="title">decomp.cpp</div></div>
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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 id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// Copyright (c) 2022, _xeroxz</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// All rights reserved.</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">//</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// Redistribution and use in source and binary forms, with or without</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">// modification, are permitted provided that the following conditions are met:</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">//</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">// 1. Redistributions of source code must retain the above copyright notice,</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment">// this list of conditions and the following disclaimer.</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">//</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment">// 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment">// this list of conditions and the following disclaimer in the documentation</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment">// and/or other materials provided with the distribution.</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment">//</span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment">// 3. Neither the name of the copyright holder nor the names of its</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment">// contributors may be used to endorse or promote products derived from</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment">// this software without specific prior written permission.</span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment">//</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"</span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment">// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment">// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment">// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE</span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="comment">// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="comment">// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="comment">// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="comment">// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="comment">// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="comment">// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment">// POSSIBILITY OF SUCH DAMAGE.</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment">//</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> </div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#include <<a class="code" href="../../d2/d96/decomp_8hpp.html">decomp/decomp.hpp</a>></span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../d9/dbd/namespacetheo_1_1decomp.html" title="the namespace that contains all of the decomposition related code.">theo::decomp</a> {</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a35cfac16bd918d576b29e04388690d68"> 34</a></span><a class="code hl_function" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a35cfac16bd918d576b29e04388690d68" title="the explicit constructor for decomp_t">decomp_t::decomp_t</a>(std::vector<std::uint8_t>& lib, <a class="code hl_class" href="../../db/d77/classtheo_1_1recomp_1_1symbol__table__t.html" title="this class is a high level wrapper for a hashmap that contains decomp::symbol_t values....">recomp::symbol_table_t</a>* syms)</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> : m_lib(lib), m_syms(syms) {}</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#ae23353a4293aa30969b6d3fa37359469"> 37</a></span>std::optional<recomp::symbol_table_t*> <a class="code hl_function" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#ae23353a4293aa30969b6d3fa37359469" title="decomposes (extracts) the symbols used. this function determines all used symbols given the entry poi...">decomp_t::decompose</a>(</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> std::string& entry_sym) {</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// extract obj files from the archive file...</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> ar::view<false> <a class="code hl_function" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#aa728bde8ec1c5c28ec09f86adf427ae2" title="gets a vector of bytes consisting of the lib file.">lib</a>(m_lib.data(), m_lib.size());</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> std::for_each(</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <a class="code hl_function" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#aa728bde8ec1c5c28ec09f86adf427ae2" title="gets a vector of bytes consisting of the lib file.">lib</a>.begin(), <a class="code hl_function" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#aa728bde8ec1c5c28ec09f86adf427ae2" title="gets a vector of bytes consisting of the lib file.">lib</a>.end(),</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> [&](std::pair<std::string_view, ar::entry_t&> itr) {</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="comment">// if the entry isnt the symbol table or the string table</span></div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// then we know its an obj file...</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> if (!itr.second.is_symbol_table() && !itr.second.is_string_table()) {</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> spdlog::info(<span class="stringliteral">"extracted obj from archive: {}"</span>, itr.first);</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> std::vector<std::uint8_t> data(itr.second.begin(), itr.second.end());</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> m_objs.push_back(data);</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> }</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> });</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> </div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> std::for_each(</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> m_objs.begin(), m_objs.end(), [&](std::vector<std::uint8_t>& img_data) {</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> auto img = reinterpret_cast<coff::image_t*>(img_data.data());</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> for (auto idx = 0u; idx < img->file_header.num_symbols; ++idx) {</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> auto sym = img->get_symbol(idx);</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> if (sym->section_index - 1 > img->file_header.num_sections)</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> continue;</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> </div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> auto sym_name = symbol_t::name(img, sym);</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> if (sym_name.length()) {</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> auto sym_hash = symbol_t::hash(sym_name.data());</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> auto sym_size =</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> sym->has_section()</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> ? next_sym(img, img->get_section(sym->section_index - 1),</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> sym)</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> : 0u;</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> </div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> m_lookup_tbl[sym_hash].emplace_back(img, sym, sym_size);</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> }</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> }</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> });</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> </div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="comment">// extract used symbols from objs and create a nice little set of them so that</span></div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="comment">// we can easily decompose them... no need deal with every single symbol...</span></div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> spdlog::info(<span class="stringliteral">"extracted {} symbols being used..."</span>,</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> ext_used_syms(entry_sym.data()));</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="comment">// generate symbols, populate section hash table, for each object file</span></div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// extracted from the archive file...</span></div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> std::for_each(m_used_syms.begin(), m_used_syms.end(), [&](<a class="code hl_typedef" href="../../d9/dbd/namespacetheo_1_1decomp.html#abbf09e1f7eb9e42057ff9c9e8be41266" title="meta symbol data. consists of the coff image which contains the coff symbol, the coff symbol itself,...">sym_data_t</a> <a class="code hl_enumvalue" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">data</a>) {</div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> auto [img, sym, size] = data;</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="comment">// populate section hash table with sections for the img of this</span></div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="comment">// symbol... only populate the hash table if its not been populated for</span></div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="comment">// this obj before...</span></div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> if (m_processed_objs.emplace(img).second) {</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> for (auto idx = 0u; idx < img->file_header.num_sections; ++idx) {</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> auto scn = img->get_section(idx);</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> auto scn_sym_name =</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> std::string(scn->name.to_string(img->get_strings()))</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> .append(<span class="stringliteral">"#"</span>)</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> .append(std::to_string(idx))</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> .append(<span class="stringliteral">"!"</span>)</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> .append(std::to_string(img->file_header.timedate_stamp));</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="comment">// hash the name of the section + the index + the timestamp of the</span></div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="comment">// obj file it is in...</span></div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> m_scn_hash_tbl.insert({scn, decomp::symbol_t::hash(scn_sym_name)});</div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> }</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> }</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> </div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="comment">// if the symbol is a function then we are going to decompose it...</span></div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="comment">// data symbols are handled after this...</span></div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> if (sym->has_section()) {</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> if (sym->derived_type == coff::derived_type_id::function) {</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> auto scn = img->get_section(sym->section_index - 1);</div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> auto dcmp_type =</div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> scn->name.to_string(img->get_strings()) == INSTR_SPLIT_SECTION_NAME</div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> ? decomp::sym_type_t::instruction</div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> : decomp::sym_type_t::function;</div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> </div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> auto fn_size = next_sym(img, scn, sym);</div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> auto fn_bgn = scn->ptr_raw_data + reinterpret_cast<std::uint8_t*>(img) +</div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> sym->value;</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> </div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> std::vector<std::uint8_t> fn(fn_bgn, fn_bgn + fn_size);</div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> decomp::routine_t rtn(sym, img, scn, fn, dcmp_type);</div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> </div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> auto syms = rtn.decompose();</div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> m_syms->put_symbols(syms);</div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> } <span class="keywordflow">else</span> if (sym->storage_class == coff::storage_class_id::public_symbol ||</div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> sym->storage_class == coff::storage_class_id::private_symbol) {</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> auto scn = img->get_section(sym->section_index - 1);</div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> auto scn_sym = m_syms->sym_from_hash(m_scn_hash_tbl[scn]);</div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> </div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="comment">// if the section doesnt have a symbol then make one and put it into</span></div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="comment">// the symbol table...</span></div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> if (!scn_sym.has_value()) {</div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> auto scn_sym_name =</div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> std::string(scn->name.to_string(img->get_strings()))</div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> .append(<span class="stringliteral">"#"</span>)</div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> .append(std::to_string(sym->section_index - 1))</div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> .append(<span class="stringliteral">"!"</span>)</div>
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|
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> .append(std::to_string(img->file_header.timedate_stamp));</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> std::vector<std::uint8_t> scn_data(scn->size_raw_data);</div>
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<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> if (scn->characteristics.cnt_uninit_data) {</div>
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<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> scn_data.insert(scn_data.begin(), scn->size_raw_data, 0);</div>
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<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> } else {</div>
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> scn_data.insert(</div>
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<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> scn_data.begin(),</div>
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<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> reinterpret_cast<std::uint8_t*>(img) + scn->ptr_raw_data,</div>
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<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> reinterpret_cast<std::uint8_t*>(img) + scn->ptr_raw_data +</div>
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|
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> scn->size_raw_data);</div>
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<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> }</div>
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<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> </div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> std::vector<recomp::reloc_t> relocs;</div>
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<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> auto scn_relocs = reinterpret_cast<coff::reloc_t*>(</div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> scn->ptr_relocs + reinterpret_cast<std::uint8_t*>(img));</div>
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> </div>
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<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> for (auto idx = 0u; idx < scn->num_relocs; ++idx) {</div>
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|
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> auto scn_reloc = &scn_relocs[idx];</div>
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|
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> auto sym_reloc = img->get_symbol(scn_relocs[idx].symbol_index);</div>
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|
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> auto sym_name = symbol_t::name(img, sym_reloc);</div>
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|
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> auto sym_hash = decomp::symbol_t::hash(sym_name.data());</div>
|
|
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> relocs.push_back(</div>
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<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> recomp::reloc_t(scn_reloc->virtual_address - sym->value,</div>
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|
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> sym_hash, sym_name.data()));</div>
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|
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> }</div>
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|
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> </div>
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|
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> decomp::symbol_t new_scn_sym(img, scn_sym_name, 0, scn_data, scn, {},</div>
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|
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> relocs, sym_type_t::section);</div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> </div>
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<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> m_syms->put_symbol(new_scn_sym);</div>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> }</div>
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|
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> </div>
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|
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> <span class="comment">// create a symbol for the data...</span></div>
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|
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> <a class="code hl_class" href="../../d9/dd5/classtheo_1_1decomp_1_1symbol__t.html" title="symbol_t is an abstraction upon the coff symbol. this allows for easier manipulation of the symbol....">decomp::symbol_t</a> new_sym(img, symbol_t::name(img, sym).<a class="code hl_enumvalue" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">data</a>(),</div>
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|
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> sym->value, {}, scn, sym, {},</div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> <a class="code hl_enumvalue" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">sym_type_t::data</a>);</div>
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<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> </div>
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<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> m_syms->put_symbol(new_sym);</div>
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<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> }</div>
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|
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sym->storage_class ==</div>
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<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> coff::storage_class_id::</div>
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<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> external_definition) { <span class="comment">// else if the symbol has no</span></div>
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|
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="comment">// section... these symbols</span></div>
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<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> <span class="comment">// require the linker to allocate</span></div>
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<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="comment">// space for them...</span></div>
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<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> </div>
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<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> std::vector<std::uint8_t> data(sym->value, 0);</div>
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|
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> decomp::symbol_t bss_sym(img, symbol_t::name(img, sym).data(), {}, <a class="code hl_enumvalue" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">data</a>,</div>
|
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<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> {}, sym, {}, <a class="code hl_enumvalue" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acdb885c0ea7f6b2874224487c69b8112">sym_type_t::data</a>);</div>
|
|
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> </div>
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|
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> m_syms->put_symbol(bss_sym);</div>
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<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> }</div>
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<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> });</div>
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<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> </div>
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|
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> <span class="comment">// return the extract symbols to the caller...</span></div>
|
|
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="comment">//</span></div>
|
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<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> <span class="keywordflow">return</span> m_syms;</div>
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<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span>}</div>
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<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> </div>
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<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span>std::uint32_t decomp_t::next_sym(coff::image_t* img,</div>
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<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> coff::section_header_t* hdr,</div>
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<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> coff::symbol_t* s) {</div>
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<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> <span class="comment">// loop over all symbols in this object...</span></div>
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|
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <span class="comment">// find the next symbol inside of the same section...</span></div>
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<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> <span class="comment">// if there is no next symbol then we use the end of the section...</span></div>
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<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> std::uint32_t res = hdr->size_raw_data;</div>
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<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> idx = 0u; idx < img->file_header.num_symbols; ++idx) {</div>
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<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> <span class="keyword">auto</span> q = img->get_symbol(idx);</div>
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|
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> <span class="keywordflow">if</span> (q->derived_type == <a class="code hl_enumvalue" href="../../d9/dbd/namespacetheo_1_1decomp.html#af96177687d0ad683c5897d8fa01135f9acf6baee49c2ddb7e89724231bbd75d4a">coff::derived_type_id::function</a> &&</div>
|
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<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> q->section_index == s->section_index && q != s)</div>
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<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> <span class="keywordflow">if</span> (q->value > s->value && q->value < res)</div>
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<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> res = q->value;</div>
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<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> }</div>
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<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> <span class="keywordflow">return</span> res;</div>
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<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span>}</div>
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<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> </div>
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<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span>std::uint32_t decomp_t::ext_used_syms(<span class="keyword">const</span> std::string&& entry_sym) {</div>
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<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> std::optional<sym_data_t> entry = get_symbol(entry_sym.data());</div>
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<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> <span class="keywordflow">if</span> (!entry.has_value())</div>
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<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> <span class="keywordflow">return</span> 0u;</div>
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<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> </div>
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<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> std::set<coff::symbol_t*> cache;</div>
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<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> <span class="keyword">const</span> <span class="keyword">auto</span> finding_syms = [&]() -> <span class="keywordtype">bool</span> {</div>
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<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> itr = m_used_syms.begin(); itr != m_used_syms.end(); ++itr) {</div>
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<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> <span class="keyword">auto</span> [img, sym, size] = *itr;</div>
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<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> <span class="keywordflow">if</span> (sym->has_section() && !cache.count(sym) && size) {</div>
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<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> <span class="keyword">auto</span> scn = img->get_section(sym->section_index - 1);</div>
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<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> <span class="keyword">auto</span> num_relocs = scn->num_relocs;</div>
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|
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <span class="keyword">auto</span> relocs = <span class="keyword">reinterpret_cast<</span>coff::reloc_t*<span class="keyword">></span>(</div>
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|
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> scn->ptr_relocs + <span class="keyword">reinterpret_cast<</span>std::uint8_t*<span class="keyword">></span>(img));</div>
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|
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> </div>
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<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> idx = 0u; idx < num_relocs; ++idx) {</div>
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<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> <span class="keyword">auto</span> reloc = &relocs[idx];</div>
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|
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> <span class="comment">// if the reloc is inside of the current symbol...</span></div>
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<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> <span class="keywordflow">if</span> (reloc->virtual_address >= sym->value &&</div>
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<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> reloc->virtual_address < sym->value + size) {</div>
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<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> <span class="keyword">auto</span> reloc_sym = img->get_symbol(reloc->symbol_index);</div>
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<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> <span class="keyword">auto</span> sym_name = symbol_t::name(img, reloc_sym);</div>
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<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> entry = get_symbol(sym_name);</div>
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<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> <span class="keywordflow">if</span> (m_used_syms.emplace(entry.value()).second)</div>
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<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> }</div>
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<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> }</div>
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<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> cache.emplace(sym);</div>
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<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> }</div>
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<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> }</div>
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<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> };</div>
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<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> </div>
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<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> m_used_syms.emplace(entry.value());</div>
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<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> <span class="keywordflow">for</span> (m_used_syms.emplace(entry.value()); finding_syms();)</div>
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<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> ;</div>
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<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> </div>
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<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> <span class="keywordflow">return</span> m_used_syms.size();</div>
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<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span>}</div>
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<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> </div>
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<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span>std::optional<sym_data_t> decomp_t::get_symbol(<span class="keyword">const</span> std::string_view& name) {</div>
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<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> coff::image_t* img = {};</div>
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<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> coff::symbol_t* sym = {};</div>
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<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> std::uint32_t size = {};</div>
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<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> </div>
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<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> <span class="keyword">auto</span>& syms = m_lookup_tbl[symbol_t::hash(name.data())];</div>
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<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> idx = 0u; idx < syms.size(); ++idx) {</div>
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<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> img = std::get<0>(syms[idx]);</div>
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<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> sym = std::get<1>(syms[idx]);</div>
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<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> size = std::get<2>(syms[idx]);</div>
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<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> <span class="keywordflow">if</span> (sym->has_section())</div>
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<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> <span class="keywordflow">return</span> {{img, sym, size}};</div>
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<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> }</div>
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<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> </div>
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<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> <span class="keywordflow">if</span> (img && sym)</div>
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<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> <span class="keywordflow">return</span> {{img, sym, size}};</div>
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<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> </div>
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<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> <span class="keywordflow">return</span> {};</div>
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<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span>}</div>
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<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> </div>
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<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a79c965ec0a996a936faae7f54b0e055e"> 281</a></span>std::vector<routine_t> decomp_t::rtns() {</div>
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<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> <span class="keywordflow">return</span> m_rtns;</div>
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<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span>}</div>
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<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> </div>
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<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#aa728bde8ec1c5c28ec09f86adf427ae2"> 285</a></span>std::vector<std::uint8_t> decomp_t::lib() {</div>
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<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> <span class="keywordflow">return</span> m_lib;</div>
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<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span>}</div>
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<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> </div>
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<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a81ae70b313a9ef24ea5d8f404699baef"> 289</a></span>std::vector<std::vector<std::uint8_t>> decomp_t::objs() {</div>
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<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> <span class="keywordflow">return</span> m_objs;</div>
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<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span>}</div>
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<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> </div>
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<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a8630f2ee0f4fb9516f5b20014e4c6120"> 293</a></span><a class="code hl_class" href="../../db/d77/classtheo_1_1recomp_1_1symbol__table__t.html" title="this class is a high level wrapper for a hashmap that contains decomp::symbol_t values....">recomp::symbol_table_t</a>* decomp_t::syms() {</div>
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<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> <span class="keywordflow">return</span> m_syms;</div>
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<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span>}</div>
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<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> </div>
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<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"><a class="line" href="../../d6/d0e/classtheo_1_1decomp_1_1decomp__t.html#a860dddc3a5d12231b685dbaa12a0db06"> 297</a></span>std::map<coff::section_header_t*, std::size_t>& decomp_t::scn_hash_tbl() {</div>
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<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> <span class="keywordflow">return</span> m_scn_hash_tbl;</div>
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<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span>}</div>
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<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span>} <span class="comment">// namespace theo::decomp</span></div>
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