77 lines
1.9 KiB
C++
77 lines
1.9 KiB
C++
/*
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Copyright 2017 Wolfgang Thaller.
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This file is part of Retro68.
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Retro68 is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Retro68 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Retro68. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "Reloc.h"
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#include <sstream>
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#include "BinaryIO.h"
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Reloc::Reloc()
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{
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}
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Reloc::Reloc(const GElf_Rela &rela)
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: GElf_Rela(rela), relocBase(RelocBase::code)
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{
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}
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std::string SerializeRelocsUncompressed(std::vector<RuntimeReloc> relocs)
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{
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std::ostringstream out;
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for(const auto& r : relocs)
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{
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longword(out, r.offset | ((int)r.base << 24));
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}
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longword(out, -1);
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return out.str();
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}
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std::string SerializeRelocs(std::vector<RuntimeReloc> relocs)
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{
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std::ostringstream out;
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for(int relative = 0; relative <= 1; relative++)
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{
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uint32_t offset = -1;
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for(const auto& r : relocs)
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{
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if(r.relative == (bool)relative)
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{
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uint32_t delta = r.offset - offset;
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offset = r.offset;
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uint32_t base = (uint32_t) r.base;
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uint32_t encoded = (delta << 2) | base;
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while(encoded >= 128)
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{
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byte(out, (encoded & 0x7F) | 0x80);
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encoded >>= 7;
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}
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byte(out, encoded);
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}
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}
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byte(out, 0);
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}
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return out.str();
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}
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