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112 lines
4.2 KiB
112 lines
4.2 KiB
// Copyright (c) 2022, _xeroxz
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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#pragma once
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#include <cstddef>
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#include <cstdint>
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#include <obf/transform/transform.hpp>
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namespace theo::recomp {
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/// <summary>
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/// meta data about a relocation for a symbol
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/// </summary>
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class reloc_t {
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public:
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/// <summary>
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/// explicit constructor for this class.
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/// </summary>
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/// <param name="offset">offset into the symbol data where the relocation is
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/// at. all relocations are assumed to be linear virtual addresses of the
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/// symbol.</param>
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/// <param name="hash">hash of the symbol to which the relocation is
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/// of.</param> <param name="sym_name">the name of the symbol to which the
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/// relocation is of.</param>
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explicit reloc_t(std::uint32_t offset,
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std::size_t hash,
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const std::string&& sym_name)
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: m_offset(offset), m_hash(hash), m_sym_name(sym_name) {}
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/// <summary>
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/// returns the hash of the relocation symbol.
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/// </summary>
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/// <returns>hash of the relocation symbol</returns>
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std::size_t hash() { return m_hash; }
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/// <summary>
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/// returns the name of the relocation symbol.
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/// </summary>
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/// <returns>returns the name of the relocation symbol.</returns>
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std::string name() { return m_sym_name; }
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/// <summary>
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/// returns the offset into the symbol to which the relocation will be
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/// applied. the offset is in bytes. zero based.
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/// </summary>
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/// <returns>returns the offset into the symbol to which the relocation will
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/// be applied. the offset is in bytes. zero based.</returns>
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std::uint32_t offset() { return m_offset; }
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/// <summary>
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/// sets the offset to which the relocation gets applied too.
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/// </summary>
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/// <param name="offset">offset to which the relocation gets applied
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/// too.</param>
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void offset(std::uint32_t offset) { m_offset = offset; }
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/// <summary>
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/// adds a transformation to be applied to the relocation prior to writing it
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/// into the symbol.
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/// </summary>
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/// <param name="entry">a pair containing a lambda function that when executed
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/// transforms a relocation. the second value in the pair is a random value
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/// which is passed to the lambda.</param>
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void add_transform(
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std::pair<obf::transform::transform_t*, std::uint32_t> entry) {
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m_transforms.push_back(entry);
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}
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/// <summary>
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/// gets the vector of transformation.
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/// </summary>
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/// <returns>returns the vector of transformations.</returns>
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std::vector<std::pair<obf::transform::transform_t*, std::uint32_t>>&
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get_transforms() {
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return m_transforms;
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}
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private:
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std::vector<std::pair<obf::transform::transform_t*, std::uint32_t>>
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m_transforms;
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std::string m_sym_name;
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std::size_t m_hash;
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std::uint32_t m_offset;
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};
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} // namespace theo::recomp
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