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<li class="navelem"><a class="el" href="../../dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="../../dir_ef99456410776b930b88f5850437ce61.html">obf</a></li><li class="navelem"><a class="el" href="../../dir_fa1ee7704f0ab8e5fd961a68bf21be50.html">transform</a></li> </ul>
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<div class="title">gen.hpp</div> </div>
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<a href="../../d5/d18/gen_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a 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 name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// All rights reserved.</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div>
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<div class="line"><a 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 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 name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></div>
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<div class="line"><a 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 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 name="l00009"></a><span class="lineno"> 9</span> <span class="comment">//</span></div>
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<div class="line"><a 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 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 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 name="l00013"></a><span class="lineno"> 13</span> <span class="comment">//</span></div>
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<div class="line"><a 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 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 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 name="l00017"></a><span class="lineno"> 17</span> <span class="comment">//</span></div>
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<div class="line"><a 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 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 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 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 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 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 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 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 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 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 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 name="l00029"></a><span class="lineno"> 29</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#pragma once</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <<a class="code" href="../../d6/deb/transform_8hpp.html">obf/transform/transform.hpp</a>></span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <<a class="code" href="../../d1/d82/reloc_8hpp.html">recomp/reloc.hpp</a>></span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  </div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span><a class="code" href="../../d8/d82/namespacetheo_1_1obf_1_1transform.html">theo::obf::transform</a> {</div>
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<div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="../../d8/d82/namespacetheo_1_1obf_1_1transform.html#a416c6c93ce55a4ab9f70592951d15704"> 45</a></span> <span class="keyword">inline</span> std::vector<std::uint8_t> <a class="code" href="../../d8/d82/namespacetheo_1_1obf_1_1transform.html#a416c6c93ce55a4ab9f70592951d15704">generate</a>(xed_decoded_inst_t* inst,</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="../../dd/d37/classtheo_1_1recomp_1_1reloc__t.html">recomp::reloc_t</a>* reloc,</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  std::uint8_t low,</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  std::uint8_t high) {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">auto</span> num_transforms = <a class="code" href="../../d7/de2/classtheo_1_1obf_1_1transform_1_1operation__t.html#aaa5859bc3c7f95d99d4d726289593488">transform::operation_t::random</a>(low, high);</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">auto</span> num_ops = <a class="code" href="../../d8/d82/namespacetheo_1_1obf_1_1transform.html#a6a4b1d5c0c9c2ea1f0b4ec8f5aba48b0">transform::operations</a>.size();</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  std::vector<std::uint8_t> new_inst_bytes;</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  std::uint32_t inst_len = {};</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  std::uint8_t inst_buff[XED_MAX_INSTRUCTION_BYTES];</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  xed_encoder_request_t req;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  xed_state_t istate{XED_MACHINE_MODE_LONG_64, XED_ADDRESS_WIDTH_64b};</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  xed_encoder_request_zero_set_mode(&req, &istate);</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  xed_encoder_request_set_effective_operand_width(&req, 64);</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  xed_encoder_request_set_iclass(&req, XED_ICLASS_PUSHFQ);</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  xed_encode(&req, inst_buff, <span class="keyword">sizeof</span>(inst_buff), &inst_len);</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  new_inst_bytes.insert(new_inst_bytes.end(), inst_buff, inst_buff + inst_len);</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  </div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span> cnt = 0u; cnt < num_transforms; ++cnt) {</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  std::uint32_t imm = <a class="code" href="../../d7/de2/classtheo_1_1obf_1_1transform_1_1operation__t.html#aaa5859bc3c7f95d99d4d726289593488">transform::operation_t::random</a>(</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  0, std::numeric_limits<std::int32_t>::max());</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">auto</span> itr = <a class="code" href="../../d8/d82/namespacetheo_1_1obf_1_1transform.html#a6a4b1d5c0c9c2ea1f0b4ec8f5aba48b0">transform::operations</a>.begin();</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  std::advance(itr, <a class="code" href="../../d7/de2/classtheo_1_1obf_1_1transform_1_1operation__t.html#aaa5859bc3c7f95d99d4d726289593488">transform::operation_t::random</a>(0, num_ops - 1));</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">auto</span> transform_bytes = itr->second->native(inst, imm);</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  new_inst_bytes.insert(new_inst_bytes.end(), transform_bytes.begin(),</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  transform_bytes.end());</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  reloc-><a class="code" href="../../dd/d37/classtheo_1_1recomp_1_1reloc__t.html#ab5214a9ff9135672e25f40406c37fb10">add_transform</a>(</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  {<a class="code" href="../../d8/d82/namespacetheo_1_1obf_1_1transform.html#a6a4b1d5c0c9c2ea1f0b4ec8f5aba48b0">transform::operations</a>[itr->second->inverse()]->get_transform(), imm});</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  xed_encoder_request_zero_set_mode(&req, &istate);</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  xed_encoder_request_set_effective_operand_width(&req, 64);</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  xed_encoder_request_set_iclass(&req, XED_ICLASS_POPFQ);</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  xed_encode(&req, inst_buff, <span class="keyword">sizeof</span>(inst_buff), &inst_len);</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  new_inst_bytes.insert(new_inst_bytes.end(), inst_buff, inst_buff + inst_len);</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  </div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// inverse the order in which the transformations are executed...</span></div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  std::reverse(reloc-><a class="code" href="../../dd/d37/classtheo_1_1recomp_1_1reloc__t.html#ad49901bf8b6b0e3963e64d17d4b51aec">get_transforms</a>().begin(), reloc-><a class="code" href="../../dd/d37/classtheo_1_1recomp_1_1reloc__t.html#ad49901bf8b6b0e3963e64d17d4b51aec">get_transforms</a>().end());</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> new_inst_bytes;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> }</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> } <span class="comment">// namespace theo::obf::transform</span></div>
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<div class="ttc" id="aclasstheo_1_1obf_1_1transform_1_1operation__t_html_aaa5859bc3c7f95d99d4d726289593488"><div class="ttname"><a href="../../d7/de2/classtheo_1_1obf_1_1transform_1_1operation__t.html#aaa5859bc3c7f95d99d4d726289593488">theo::obf::transform::operation_t::random</a></div><div class="ttdeci">static std::size_t random(std::size_t lowest, std::size_t largest)</div><div class="ttdoc">generate a random number in a range.</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/operation_8hpp_source.html#l00148">operation.hpp:148</a></div></div>
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<div class="ttc" id="aclasstheo_1_1recomp_1_1reloc__t_html"><div class="ttname"><a href="../../dd/d37/classtheo_1_1recomp_1_1reloc__t.html">theo::recomp::reloc_t</a></div><div class="ttdoc">meta data about a relocation for a symbol</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d82/reloc_8hpp_source.html#l00041">reloc.hpp:41</a></div></div>
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<div class="ttc" id="aclasstheo_1_1recomp_1_1reloc__t_html_ab5214a9ff9135672e25f40406c37fb10"><div class="ttname"><a href="../../dd/d37/classtheo_1_1recomp_1_1reloc__t.html#ab5214a9ff9135672e25f40406c37fb10">theo::recomp::reloc_t::add_transform</a></div><div class="ttdeci">void add_transform(std::pair< obf::transform::transform_t *, std::uint32_t > entry)</div><div class="ttdoc">adds a transformation to be applied to the relocation prior to writing it into the symbol.</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d82/reloc_8hpp_source.html#l00091">reloc.hpp:91</a></div></div>
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<div class="ttc" id="aclasstheo_1_1recomp_1_1reloc__t_html_ad49901bf8b6b0e3963e64d17d4b51aec"><div class="ttname"><a href="../../dd/d37/classtheo_1_1recomp_1_1reloc__t.html#ad49901bf8b6b0e3963e64d17d4b51aec">theo::recomp::reloc_t::get_transforms</a></div><div class="ttdeci">std::vector< std::pair< obf::transform::transform_t *, std::uint32_t > > & get_transforms()</div><div class="ttdoc">gets the vector of transformation.</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d82/reloc_8hpp_source.html#l00101">reloc.hpp:101</a></div></div>
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<div class="ttc" id="anamespacetheo_1_1obf_1_1transform_html"><div class="ttname"><a href="../../d8/d82/namespacetheo_1_1obf_1_1transform.html">theo::obf::transform</a></div><div class="ttdoc">this namespace encompasses the code for transforming relocations.</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/def/add__op_8hpp_source.html#l00034">add_op.hpp:34</a></div></div>
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<div class="ttc" id="anamespacetheo_1_1obf_1_1transform_html_a416c6c93ce55a4ab9f70592951d15704"><div class="ttname"><a href="../../d8/d82/namespacetheo_1_1obf_1_1transform.html#a416c6c93ce55a4ab9f70592951d15704">theo::obf::transform::generate</a></div><div class="ttdeci">std::vector< std::uint8_t > generate(xed_decoded_inst_t *inst, recomp::reloc_t *reloc, std::uint8_t low, std::uint8_t high)</div><div class="ttdoc">generate a sequence of transformations given an instruction that has a relocation in it.</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d18/gen_8hpp_source.html#l00045">gen.hpp:45</a></div></div>
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<div class="ttc" id="anamespacetheo_1_1obf_1_1transform_html_a6a4b1d5c0c9c2ea1f0b4ec8f5aba48b0"><div class="ttname"><a href="../../d8/d82/namespacetheo_1_1obf_1_1transform.html#a6a4b1d5c0c9c2ea1f0b4ec8f5aba48b0">theo::obf::transform::operations</a></div><div class="ttdeci">std::map< xed_iclass_enum_t, operation_t * > operations</div><div class="ttdoc">map of all of the operations and their type.</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/deb/transform_8hpp_source.html#l00042">transform.hpp:42</a></div></div>
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<div class="ttc" id="areloc_8hpp_html"><div class="ttname"><a href="../../d1/d82/reloc_8hpp.html">reloc.hpp</a></div></div>
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<div class="ttc" id="atransform_8hpp_html"><div class="ttname"><a href="../../d6/deb/transform_8hpp.html">transform.hpp</a></div></div>
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