initial commit

This commit is contained in:
boykopovar 2026-08-03 20:02:52 +03:00
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*.d
*.slo
*.lo
*.o
*.obj
*.gch
*.pch
*.ilk
*.pdb
*.so
*.so.*
*.dylib
*.dll
*.mod
*.smod
*.lai
*.la
*.a
*.lib
*.exe
*.out
*.app
build/
Build/
build-*/
cmake-build-debug/
cmake-build-release/
CMakeFiles/
CMakeCache.txt
cmake_install.cmake
Makefile
install_manifest.txt
compile_commands.json
vcpkg_installed/
Testing/
tests/sdf/
.cache/
sqlce_wasm.js
sqlce_wasm.wasm
emsdk/
build-wasm/
.idea/
.vscode/
.venv/
venv/
env/
ENV/
__pycache__/
*.pyo
*.pyd
*.egg
*.egg-info/
dist/
*.dwo
.pytest_cache/
coverage.xml
.coverage
htmlcov/
*.tmp
*.log
*.bak
*.swp
raw/
images/
sessions/
downloads/
*.tar.gz
*.zip
*.whl
*.env
*.sdf
*.bat
*.jpg
*.png
*.json
!demo/web/i18n/*.json
!/assets/*.jpg
!/assets/*.png
.DS_Store
Thumbs.db
cookies.txt
.env
.env.local

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cmake_minimum_required(VERSION 3.20)
project(Relinker CXX)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
add_subdirectory(core/relinker)

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
<https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
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The precise terms and conditions for copying, distribution and
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GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
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your rights to work written entirely by you; rather, the intent is to
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collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
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under Section 2) in object code or executable form under the terms of
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a) Accompany it with the complete corresponding machine-readable
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c) Accompany it with the information you received as to the offer
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except as expressly provided under this License. Any attempt
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may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
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any particular circumstance, the balance of the section is intended to
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It is not the purpose of this section to induce you to infringe any
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implemented by public license practices. Many people have made
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This section is intended to make thoroughly clear what is believed to
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8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
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of the General Public License from time to time. Such new versions will
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either of that version or of any later version published by the Free
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Foundation.
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NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
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PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
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WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Moe Ghoul>, 1 April 1989
Moe Ghoul, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

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# About
Converter for native execution of PlayStation 5 ELF binaries on Linux through binary format conversion and ABI compatibility. The implementation uses only the C++20 standard library and performs deterministic binary transformation without heuristics or interpretation.
## Disclaimer
This project is intended for interoperability, research, preservation, and compatibility purposes. It does not include, distribute, or require copyrighted software, firmware, cryptographic keys, or proprietary libraries. Users are responsible for ensuring that any binaries used with this project are obtained and used in accordance with applicable laws and their respective license terms.
## License
This project is licensed under the GNU General Public License version 2 only.

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set(RELINKER_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
set(RELINKER_HEADERS
${RELINKER_INCLUDE_DIR}/relinker/Types.hpp
${RELINKER_INCLUDE_DIR}/relinker/IValidationPolicy.hpp
${RELINKER_INCLUDE_DIR}/relinker/IElfReader.hpp
${RELINKER_INCLUDE_DIR}/relinker/ISdkRevisionProfile.hpp
${RELINKER_INCLUDE_DIR}/relinker/ISceDynlibParser.hpp
${RELINKER_INCLUDE_DIR}/relinker/ISyscallScanner.hpp
${RELINKER_INCLUDE_DIR}/relinker/ICallSiteResolver.hpp
${RELINKER_INCLUDE_DIR}/relinker/ISysVDynamicSectionBuilder.hpp
${RELINKER_INCLUDE_DIR}/relinker/ICallRegistryWriter.hpp
)
set(RELINKER_SOURCES
${CMAKE_CURRENT_SOURCE_DIR}/src/ValidationPolicy.cpp
${CMAKE_CURRENT_SOURCE_DIR}/src/ElfReader.cpp
${CMAKE_CURRENT_SOURCE_DIR}/src/SdkRevisionProfile.cpp
${CMAKE_CURRENT_SOURCE_DIR}/src/SceDynlibParser.cpp
${CMAKE_CURRENT_SOURCE_DIR}/src/SyscallScanner.cpp
)
add_executable(relinker ${RELINKER_SOURCES} ${RELINKER_HEADERS})
target_include_directories(relinker PRIVATE ${RELINKER_INCLUDE_DIR})

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#ifndef RELINKER_ELFREADER_HPP
#define RELINKER_ELFREADER_HPP
#include <relinker/IElfReader.hpp>
#include <fstream>
#include <vector>
namespace Relinker {
class ElfReader : public IElfReader {
public:
explicit ElfReader(const std::string& FilePath);
ElfHeader ReadHeader() const override;
std::vector<ProgramHeader> ReadProgramHeaders() const override;
std::vector<SectionHeader> ReadSectionHeaders() const override;
std::vector<std::uint8_t> ReadSection(const SectionHeader& Header) const override;
std::vector<std::uint8_t> ReadSegment(const ProgramHeader& Header) const override;
std::uint64_t GetFileSize() const override;
private:
std::string _filePath;
mutable std::vector<std::uint8_t> _fileBuffer;
void _loadFileIntoBuffer() const;
std::uint64_t _readU64At(Offset Offset) const;
std::uint32_t _readU32At(Offset Offset) const;
std::uint16_t _readU16At(Offset Offset) const;
std::uint8_t _readU8At(Offset Offset) const;
std::string _resolveShdrName(std::uint32_t NameOffset, const ElfHeader& Header) const;
};
}
#endif // RELINKER_ELFREADER_HPP

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#ifndef RELINKER_ICALLREGISTRYWRITER_HPP
#define RELINKER_ICALLREGISTRYWRITER_HPP
#include <relinker/Types.hpp>
#include <string>
#include <vector>
namespace Relinker {
struct CallRegistryEntry {
std::string Nid;
std::string Library;
std::string RelocationTypeString;
Offset RelocationOffset;
std::string TargetSection;
Offset TargetOffset;
std::vector<Offset> CallSites;
bool CallSitesResolved;
};
class ICallRegistryWriter {
public:
virtual ~ICallRegistryWriter() = default;
virtual std::string WriteCallRegistry(const std::vector<CallRegistryEntry>& Entries) = 0;
};
}
#endif // RELINKER_ICALLREGISTRYWRITER_HPP

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#ifndef RELINKER_ICALLSITERESOLVER_HPP
#define RELINKER_ICALLSITERESOLVER_HPP
#include <relinker/Types.hpp>
#include <vector>
namespace Relinker {
class ICallSiteResolver {
public:
virtual ~ICallSiteResolver() = default;
virtual std::vector<Offset> ResolveCallSites(
const std::vector<std::uint8_t>& TextSection,
Offset TextSectionVAddr,
Address TargetGotOrPltAddress,
Size TargetGotOrPltSize
) = 0;
};
}
#endif // RELINKER_ICALLSITERESOLVER_HPP

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#ifndef RELINKER_IELFREADER_HPP
#define RELINKER_IELFREADER_HPP
#include <relinker/Types.hpp>
#include <vector>
#include <memory>
namespace Relinker {
class IElfReader {
public:
virtual ~IElfReader() = default;
virtual ElfHeader ReadHeader() const = 0;
virtual std::vector<ProgramHeader> ReadProgramHeaders() const = 0;
virtual std::vector<SectionHeader> ReadSectionHeaders() const = 0;
virtual std::vector<std::uint8_t> ReadSection(const SectionHeader& Header) const = 0;
virtual std::vector<std::uint8_t> ReadSegment(const ProgramHeader& Header) const = 0;
virtual std::uint64_t GetFileSize() const = 0;
};
}
#endif // RELINKER_IELFREADER_HPP

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#ifndef RELINKER_ISCEDYNLIBPARSER_HPP
#define RELINKER_ISCEDYNLIBPARSER_HPP
#include <relinker/Types.hpp>
#include <vector>
namespace Relinker {
struct LibraryImport {
std::string LibraryName;
std::uint32_t LibraryId;
std::uint32_t Version;
};
struct RelocationEntry {
Offset Offset;
std::uint64_t Info;
std::int64_t Addend;
};
class ISceDynlibParser {
public:
virtual ~ISceDynlibParser() = default;
virtual std::vector<LibraryImport> ParseLibraryImports(const std::vector<std::uint8_t>& SceDynlibData) = 0;
virtual std::vector<RelocationEntry> ParseRelocationTable(const std::vector<std::uint8_t>& SceDynlibData) = 0;
virtual std::vector<NidReference> ExtractNidReferences(
const std::vector<RelocationEntry>& Relocations,
const std::vector<LibraryImport>& Imports
) = 0;
};
}
#endif // RELINKER_ISCEDYNLIBPARSER_HPP

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#ifndef RELINKER_ISDKREVISIONPROFILE_HPP
#define RELINKER_ISDKREVISIONPROFILE_HPP
#include <relinker/Types.hpp>
namespace Relinker {
class ISdkRevisionProfile {
public:
virtual ~ISdkRevisionProfile() = default;
virtual std::uint32_t GetSceModuleParamHeaderSize() const = 0;
virtual std::uint32_t GetSceModuleParamEntrySize() const = 0;
virtual std::uint32_t GetSceDynlibDataHeaderSize() const = 0;
virtual std::uint32_t GetSceDynlibDataEntrySize() const = 0;
virtual std::uint32_t GetRelocationEntrySize() const = 0;
virtual std::uint32_t GetImportsOffset() const = 0;
virtual std::uint32_t GetImportsCount(const std::vector<std::uint8_t>& Data) const = 0;
virtual std::uint32_t GetRelocationTableOffset() const = 0;
};
}
#endif // RELINKER_ISDKREVISIONPROFILE_HPP

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#ifndef RELINKER_ISYSVDYNAMICSECTIONBUILDER_HPP
#define RELINKER_ISYSVDYNAMICSECTIONBUILDER_HPP
#include <relinker/Types.hpp>
#include <vector>
namespace Relinker {
struct SysVDynamicSection {
std::vector<std::uint8_t> DynamicSegmentData;
std::vector<std::uint8_t> DynSymData;
std::vector<std::uint8_t> DynStrData;
std::vector<std::uint8_t> RelaData;
std::vector<std::uint8_t> RelaPltData;
};
class ISysVDynamicSectionBuilder {
public:
virtual ~ISysVDynamicSectionBuilder() = default;
virtual SysVDynamicSection BuildDynamicSection(
const std::vector<NidReference>& NidReferences,
const std::vector<std::string>& NeededLibraries
) = 0;
};
}
#endif // RELINKER_ISYSVDYNAMICSECTIONBUILDER_HPP

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#ifndef RELINKER_ISYSCALLSCANNER_HPP
#define RELINKER_ISYSCALLSCANNER_HPP
#include <relinker/Types.hpp>
#include <vector>
namespace Relinker {
class ISyscallScanner {
public:
virtual ~ISyscallScanner() = default;
virtual void ScanCodeSectionForSyscalls(
const std::vector<std::uint8_t>& CodeSection,
Offset CodeSectionOffset,
Offset CodeSectionSize
) = 0;
};
}
#endif // RELINKER_ISYSCALLSCANNER_HPP

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#ifndef RELINKER_IVALIDATIONPOLICY_HPP
#define RELINKER_IVALIDATIONPOLICY_HPP
#include <relinker/Types.hpp>
namespace Relinker {
class IValidationPolicy {
public:
virtual ~IValidationPolicy() = default;
virtual void ValidateSyscallAbsence() = 0;
virtual void ValidateRelocationTypeSupported(std::uint32_t RelocationTypeValue, Offset Offset) = 0;
virtual void ValidateNidBelongsToLibrary(const std::string& Nid, const std::string& Library) = 0;
virtual void ValidateSceStructureSize(Size ExpectedSize, Size ActualSize, Offset Offset) = 0;
virtual void ValidateDynamicFieldInterpretable(const std::string& FieldName, Offset Offset) = 0;
virtual void ValidateNoSyscallInstructions(const std::vector<std::uint8_t>& CodeSection, Offset CodeOffset) = 0;
};
}
#endif // RELINKER_IVALIDATIONPOLICY_HPP

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#ifndef RELINKER_SCEDYNLIBPARSER_HPP
#define RELINKER_SCEDYNLIBPARSER_HPP
#include <relinker/ISceDynlibParser.hpp>
#include <memory>
namespace Relinker {
class ISdkRevisionProfile;
class SceDynlibParser : public ISceDynlibParser {
public:
explicit SceDynlibParser(std::shared_ptr<ISdkRevisionProfile> SdkProfile);
std::vector<LibraryImport> ParseLibraryImports(const std::vector<std::uint8_t>& SceDynlibData) override;
std::vector<RelocationEntry> ParseRelocationTable(const std::vector<std::uint8_t>& SceDynlibData) override;
std::vector<NidReference> ExtractNidReferences(
const std::vector<RelocationEntry>& Relocations,
const std::vector<LibraryImport>& Imports
) override;
private:
std::shared_ptr<ISdkRevisionProfile> _sdkProfile;
std::uint32_t _readU32At(const std::vector<std::uint8_t>& Data, Offset Offset) const;
std::uint16_t _readU16At(const std::vector<std::uint8_t>& Data, Offset Offset) const;
std::uint8_t _readU8At(const std::vector<std::uint8_t>& Data, Offset Offset) const;
std::uint64_t _readU64At(const std::vector<std::uint8_t>& Data, Offset Offset) const;
std::string _extractNidFromRelocationInfo(std::uint64_t Info) const;
std::string _getLibraryNameForRelocation(const std::vector<LibraryImport>& Imports, std::uint64_t Info) const;
};
}
#endif // RELINKER_SCEDYNLIBPARSER_HPP

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#ifndef RELINKER_SDKREVISIONPROFILE_HPP
#define RELINKER_SDKREVISIONPROFILE_HPP
#include <relinker/ISdkRevisionProfile.hpp>
#include <map>
namespace Relinker {
class SdkRevisionProfile : public ISdkRevisionProfile {
public:
explicit SdkRevisionProfile(const std::vector<std::uint8_t>& SceDynlibData);
std::uint32_t GetSceModuleParamHeaderSize() const override;
std::uint32_t GetSceModuleParamEntrySize() const override;
std::uint32_t GetSceDynlibDataHeaderSize() const override;
std::uint32_t GetSceDynlibDataEntrySize() const override;
std::uint32_t GetRelocationEntrySize() const override;
std::uint32_t GetImportsOffset() const override;
std::uint32_t GetImportsCount(const std::vector<std::uint8_t>& Data) const override;
std::uint32_t GetRelocationTableOffset() const override;
private:
std::uint32_t _sdkRevision;
void _detectSdkRevision(const std::vector<std::uint8_t>& Data);
std::uint32_t _readU32LittleEndian(const std::vector<std::uint8_t>& Data, Offset Offset) const;
std::uint16_t _readU16LittleEndian(const std::vector<std::uint8_t>& Data, Offset Offset) const;
};
}
#endif // RELINKER_SDKREVISIONPROFILE_HPP

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#ifndef RELINKER_TYPES_HPP
#define RELINKER_TYPES_HPP
#include <cstdint>
#include <string>
#include <vector>
#include <map>
#include <memory>
#include <stdexcept>
namespace Relinker {
using Offset = std::uint64_t;
using Address = std::uint64_t;
using Size = std::uint64_t;
struct ElfHeader {
std::uint16_t Machine;
std::uint16_t Type;
std::uint8_t OsAbi;
std::uint8_t AbiVersion;
std::uint64_t EntryPoint;
std::uint64_t ProgramHeaderOffset;
std::uint64_t SectionHeaderOffset;
std::uint32_t ProgramHeaderEntrySize;
std::uint16_t ProgramHeaderCount;
std::uint32_t SectionHeaderEntrySize;
std::uint16_t SectionHeaderCount;
std::uint16_t SectionHeaderStringIndex;
};
struct ProgramHeader {
std::uint32_t Type;
std::uint32_t Flags;
Offset Offset;
Address VirtualAddress;
Address PhysicalAddress;
Size FileSize;
Size MemorySize;
std::uint64_t Alignment;
};
struct SectionHeader {
std::string Name;
std::uint32_t Type;
std::uint64_t Flags;
Address VirtualAddress;
Offset Offset;
Size Size;
std::uint32_t Link;
std::uint32_t Info;
std::uint64_t EntrySize;
};
struct NidReference {
std::string Nid;
std::string Library;
std::uint32_t RelocationTypeValue;
Offset RelocationTableOffset;
Address RelocationAddress;
};
struct CallSiteInfo {
std::vector<Offset> Sites;
bool Resolved;
};
struct SymbolExport {
std::string Nid;
std::string Library;
Offset GotOffset;
Offset PltOffset;
CallSiteInfo CallSites;
};
struct RelinkerException : std::runtime_error {
Offset FailureOffset;
explicit RelinkerException(const std::string& Message, Offset Offset = 0)
: std::runtime_error(Message), FailureOffset(Offset) {}
};
}
#endif // RELINKER_TYPES_HPP

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#include <relinker/ElfReader.hpp>
#include <relinker/Types.hpp>
#include <fstream>
#include <cstring>
namespace Relinker {
ElfReader::ElfReader(const std::string& FilePath) : _filePath(FilePath) {
}
void ElfReader::_loadFileIntoBuffer() const {
if (!_fileBuffer.empty()) {
return;
}
std::ifstream file(_filePath, std::ios::binary | std::ios::ate);
if (!file.is_open()) {
throw RelinkerException("Cannot open file: " + _filePath);
}
std::streamsize size = file.tellg();
file.seekg(0, std::ios::beg);
_fileBuffer.resize(size);
if (!file.read(reinterpret_cast<char*>(_fileBuffer.data()), size)) {
throw RelinkerException("Cannot read file: " + _filePath);
}
}
std::uint8_t ElfReader::_readU8At(Offset Offset) const {
_loadFileIntoBuffer();
if (Offset >= _fileBuffer.size()) {
throw RelinkerException("Offset out of bounds", Offset);
}
return _fileBuffer[Offset];
}
std::uint16_t ElfReader::_readU16At(Offset Offset) const {
_loadFileIntoBuffer();
if (Offset + 2 > _fileBuffer.size()) {
throw RelinkerException("Offset out of bounds", Offset);
}
std::uint16_t value;
std::memcpy(&value, _fileBuffer.data() + Offset, 2);
return value;
}
std::uint32_t ElfReader::_readU32At(Offset Offset) const {
_loadFileIntoBuffer();
if (Offset + 4 > _fileBuffer.size()) {
throw RelinkerException("Offset out of bounds", Offset);
}
std::uint32_t value;
std::memcpy(&value, _fileBuffer.data() + Offset, 4);
return value;
}
std::uint64_t ElfReader::_readU64At(Offset Offset) const {
_loadFileIntoBuffer();
if (Offset + 8 > _fileBuffer.size()) {
throw RelinkerException("Offset out of bounds", Offset);
}
std::uint64_t value;
std::memcpy(&value, _fileBuffer.data() + Offset, 8);
return value;
}
ElfHeader ElfReader::ReadHeader() const {
_loadFileIntoBuffer();
if (_fileBuffer.size() < 20) {
throw RelinkerException("File too small for ELF header");
}
if (_fileBuffer[0] != 0x7f || _fileBuffer[1] != 'E' ||
_fileBuffer[2] != 'L' || _fileBuffer[3] != 'F') {
throw RelinkerException("Invalid ELF magic number");
}
ElfHeader header;
header.Machine = _readU16At(0x12);
header.Type = _readU16At(0x10);
header.OsAbi = _readU8At(0x07);
header.AbiVersion = _readU8At(0x08);
header.EntryPoint = _readU64At(0x18);
header.ProgramHeaderOffset = _readU64At(0x20);
header.SectionHeaderOffset = _readU64At(0x28);
header.ProgramHeaderEntrySize = _readU16At(0x32);
header.ProgramHeaderCount = _readU16At(0x38);
header.SectionHeaderEntrySize = _readU16At(0x3a);
header.SectionHeaderCount = _readU16At(0x3c);
header.SectionHeaderStringIndex = _readU16At(0x3e);
return header;
}
std::vector<ProgramHeader> ElfReader::ReadProgramHeaders() const {
_loadFileIntoBuffer();
ElfHeader header = ReadHeader();
std::vector<ProgramHeader> headers;
Offset offset = header.ProgramHeaderOffset;
for (std::uint16_t i = 0; i < header.ProgramHeaderCount; ++i) {
ProgramHeader ph;
ph.Type = _readU32At(offset);
ph.Flags = _readU32At(offset + 0x04);
ph.Offset = _readU64At(offset + 0x08);
ph.VirtualAddress = _readU64At(offset + 0x10);
ph.PhysicalAddress = _readU64At(offset + 0x18);
ph.FileSize = _readU64At(offset + 0x20);
ph.MemorySize = _readU64At(offset + 0x28);
ph.Alignment = _readU64At(offset + 0x30);
headers.push_back(ph);
offset += header.ProgramHeaderEntrySize;
}
return headers;
}
std::vector<SectionHeader> ElfReader::ReadSectionHeaders() const {
_loadFileIntoBuffer();
ElfHeader header = ReadHeader();
std::vector<SectionHeader> headers;
Offset offset = header.SectionHeaderOffset;
for (std::uint16_t i = 0; i < header.SectionHeaderCount; ++i) {
SectionHeader sh;
std::uint32_t nameOffset = _readU32At(offset);
sh.Type = _readU32At(offset + 0x04);
sh.Flags = _readU64At(offset + 0x08);
sh.VirtualAddress = _readU64At(offset + 0x10);
sh.Offset = _readU64At(offset + 0x18);
sh.Size = _readU64At(offset + 0x20);
sh.Link = _readU32At(offset + 0x28);
sh.Info = _readU32At(offset + 0x2c);
sh.EntrySize = _readU64At(offset + 0x30);
sh.Name = _resolveShdrName(nameOffset, header);
headers.push_back(sh);
offset += header.SectionHeaderEntrySize;
}
return headers;
}
std::string ElfReader::_resolveShdrName(std::uint32_t NameOffset, const ElfHeader& Header) const {
if (Header.SectionHeaderStringIndex == 0) {
return "";
}
Offset shstrOffset = Header.SectionHeaderOffset +
(Header.SectionHeaderStringIndex * Header.SectionHeaderEntrySize);
Offset strTableOffset = _readU64At(shstrOffset + 0x18);
std::string name;
Offset currentPos = strTableOffset + NameOffset;
while (currentPos < _fileBuffer.size() && _fileBuffer[currentPos] != '\0') {
name += static_cast<char>(_fileBuffer[currentPos]);
currentPos++;
}
return name;
}
std::vector<std::uint8_t> ElfReader::ReadSection(const SectionHeader& Header) const {
_loadFileIntoBuffer();
if (Header.Offset + Header.Size > _fileBuffer.size()) {
throw RelinkerException("Section offset out of bounds", Header.Offset);
}
std::vector<std::uint8_t> data(_fileBuffer.begin() + Header.Offset, _fileBuffer.begin() + Header.Offset + Header.Size);
return data;
}
std::vector<std::uint8_t> ElfReader::ReadSegment(const ProgramHeader& Header) const {
_loadFileIntoBuffer();
if (Header.Offset + Header.FileSize > _fileBuffer.size()) {
throw RelinkerException("Segment offset out of bounds", Header.Offset);
}
std::vector<std::uint8_t> data(_fileBuffer.begin() + Header.Offset, _fileBuffer.begin() + Header.Offset + Header.FileSize);
return data;
}
std::uint64_t ElfReader::GetFileSize() const {
_loadFileIntoBuffer();
return _fileBuffer.size();
}
}

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#include <relinker/SceDynlibParser.hpp>
#include <relinker/ISdkRevisionProfile.hpp>
#include <cstring>
#include <sstream>
namespace Relinker {
static constexpr std::uint64_t NID_INDEX_MASK = 0x000000000000FFFFULL;
static constexpr std::uint64_t LIB_INDEX_MASK = 0x00000000FFFF0000ULL;
static constexpr int LIB_INDEX_SHIFT = 16;
static constexpr std::uint32_t RELOC_TYPE_MASK = 0xFFFFFFFFU;
SceDynlibParser::SceDynlibParser(std::shared_ptr<ISdkRevisionProfile> SdkProfile)
: _sdkProfile(std::move(SdkProfile)) {
}
std::uint8_t SceDynlibParser::_readU8At(
const std::vector<std::uint8_t>& Data, Offset Offset) const {
if (Offset >= Data.size()) {
throw RelinkerException("SCE dynlib data offset out of bounds", Offset);
}
return Data[Offset];
}
std::uint16_t SceDynlibParser::_readU16At(
const std::vector<std::uint8_t>& Data, Offset Offset) const {
if (Offset + 2 > Data.size()) {
throw RelinkerException("SCE dynlib data offset out of bounds", Offset);
}
std::uint16_t value;
std::memcpy(&value, Data.data() + Offset, 2);
return value;
}
std::uint32_t SceDynlibParser::_readU32At(
const std::vector<std::uint8_t>& Data, Offset Offset) const {
if (Offset + 4 > Data.size()) {
throw RelinkerException("SCE dynlib data offset out of bounds", Offset);
}
std::uint32_t value;
std::memcpy(&value, Data.data() + Offset, 4);
return value;
}
std::uint64_t SceDynlibParser::_readU64At(
const std::vector<std::uint8_t>& Data, Offset Offset) const {
if (Offset + 8 > Data.size()) {
throw RelinkerException("SCE dynlib data offset out of bounds", Offset);
}
std::uint64_t value;
std::memcpy(&value, Data.data() + Offset, 8);
return value;
}
std::vector<LibraryImport> SceDynlibParser::ParseLibraryImports(
const std::vector<std::uint8_t>& SceDynlibData) {
std::uint32_t count = _sdkProfile->GetImportsCount(SceDynlibData);
std::uint32_t baseOff = _sdkProfile->GetImportsOffset();
std::uint32_t entrySize = _sdkProfile->GetSceDynlibDataEntrySize();
std::vector<LibraryImport> imports;
imports.reserve(count);
Offset cursor = baseOff;
for (std::uint32_t i = 0; i < count; ++i) {
if (cursor + entrySize > SceDynlibData.size()) {
throw RelinkerException("Library import entry out of bounds", cursor);
}
std::uint32_t nameOffset = _readU32At(SceDynlibData, cursor);
std::uint32_t libraryId = _readU16At(SceDynlibData, cursor + 0x04);
std::uint32_t version = _readU16At(SceDynlibData, cursor + 0x06);
std::string name;
Offset namePos = nameOffset;
while (namePos < SceDynlibData.size() && SceDynlibData[namePos] != '\0') {
name += static_cast<char>(SceDynlibData[namePos]);
++namePos;
}
LibraryImport imp;
imp.LibraryName = std::move(name);
imp.LibraryId = libraryId;
imp.Version = version;
imports.push_back(std::move(imp));
cursor += entrySize;
}
return imports;
}
std::vector<RelocationEntry> SceDynlibParser::ParseRelocationTable(
const std::vector<std::uint8_t>& SceDynlibData) {
std::uint32_t tableOffset = _sdkProfile->GetRelocationTableOffset();
std::uint32_t entrySize = _sdkProfile->GetRelocationEntrySize();
if (tableOffset >= SceDynlibData.size()) {
return {};
}
std::vector<RelocationEntry> entries;
Offset cursor = tableOffset;
while (cursor + entrySize <= SceDynlibData.size()) {
RelocationEntry entry;
entry.Offset = _readU64At(SceDynlibData, cursor);
entry.Info = _readU64At(SceDynlibData, cursor + 0x08);
entry.Addend = static_cast<std::int64_t>(_readU64At(SceDynlibData, cursor + 0x10));
entries.push_back(entry);
cursor += entrySize;
}
return entries;
}
std::string SceDynlibParser::_extractNidFromRelocationInfo(std::uint64_t Info) const {
std::uint64_t symIndex = Info >> 32;
std::ostringstream oss;
oss << std::hex << symIndex;
return oss.str();
}
std::string SceDynlibParser::_getLibraryNameForRelocation(
const std::vector<LibraryImport>& Imports, std::uint64_t Info) const {
std::uint32_t libIndex = static_cast<std::uint32_t>((Info & LIB_INDEX_MASK) >> LIB_INDEX_SHIFT);
if (libIndex == 0 || libIndex > Imports.size()) {
return "";
}
return Imports[libIndex - 1].LibraryName;
}
std::vector<NidReference> SceDynlibParser::ExtractNidReferences(
const std::vector<RelocationEntry>& Relocations,
const std::vector<LibraryImport>& Imports) {
std::vector<NidReference> refs;
refs.reserve(Relocations.size());
for (std::size_t i = 0; i < Relocations.size(); ++i) {
const auto& reloc = Relocations[i];
std::uint32_t relocType = static_cast<std::uint32_t>(reloc.Info & RELOC_TYPE_MASK);
std::string nid = _extractNidFromRelocationInfo(reloc.Info);
std::string library = _getLibraryNameForRelocation(Imports, reloc.Info);
NidReference ref;
ref.Nid = std::move(nid);
ref.Library = std::move(library);
ref.RelocationTypeValue = relocType;
ref.RelocationTableOffset = static_cast<Offset>(i * _sdkProfile->GetRelocationEntrySize());
ref.RelocationAddress = reloc.Offset;
refs.push_back(std::move(ref));
}
return refs;
}
}

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#include <relinker/SdkRevisionProfile.hpp>
#include <cstring>
namespace Relinker {
constexpr std::uint32_t DEFAULT_SDK_REVISION = 0x05000000;
constexpr std::uint32_t SCE_MODULE_PARAM_HEADER_SIZE = 0x38;
constexpr std::uint32_t SCE_MODULE_PARAM_ENTRY_SIZE = 0x08;
constexpr std::uint32_t SCE_DYNLIBDATA_HEADER_SIZE = 0x10;
constexpr std::uint32_t SCE_DYNLIBDATA_ENTRY_SIZE = 0x10;
constexpr std::uint32_t RELOCATION_ENTRY_SIZE = 0x18;
SdkRevisionProfile::SdkRevisionProfile(const std::vector<std::uint8_t>& SceDynlibData)
: _sdkRevision(DEFAULT_SDK_REVISION) {
_detectSdkRevision(SceDynlibData);
}
void SdkRevisionProfile::_detectSdkRevision(const std::vector<std::uint8_t>& Data) {
if (Data.size() < 8) {
return;
}
_sdkRevision = _readU32LittleEndian(Data, 0x04);
}
std::uint32_t SdkRevisionProfile::_readU32LittleEndian(
const std::vector<std::uint8_t>& Data, Offset Offset) const {
if (Offset + 4 > Data.size()) {
throw RelinkerException("Offset out of bounds", Offset);
}
std::uint32_t value;
std::memcpy(&value, Data.data() + Offset, 4);
return value;
}
std::uint16_t SdkRevisionProfile::_readU16LittleEndian(
const std::vector<std::uint8_t>& Data, Offset Offset) const {
if (Offset + 2 > Data.size()) {
throw RelinkerException("Offset out of bounds", Offset);
}
std::uint16_t value;
std::memcpy(&value, Data.data() + Offset, 2);
return value;
}
std::uint32_t SdkRevisionProfile::GetSceModuleParamHeaderSize() const {
return SCE_MODULE_PARAM_HEADER_SIZE;
}
std::uint32_t SdkRevisionProfile::GetSceModuleParamEntrySize() const {
return SCE_MODULE_PARAM_ENTRY_SIZE;
}
std::uint32_t SdkRevisionProfile::GetSceDynlibDataHeaderSize() const {
return SCE_DYNLIBDATA_HEADER_SIZE;
}
std::uint32_t SdkRevisionProfile::GetSceDynlibDataEntrySize() const {
return SCE_DYNLIBDATA_ENTRY_SIZE;
}
std::uint32_t SdkRevisionProfile::GetRelocationEntrySize() const {
return RELOCATION_ENTRY_SIZE;
}
std::uint32_t SdkRevisionProfile::GetImportsOffset() const {
return SCE_DYNLIBDATA_HEADER_SIZE;
}
std::uint32_t SdkRevisionProfile::GetImportsCount(const std::vector<std::uint8_t>& Data) const {
if (Data.size() < 8) {
return 0;
}
return _readU32LittleEndian(Data, 0x00);
}
std::uint32_t SdkRevisionProfile::GetRelocationTableOffset() const {
return 0;
}
}

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#include <relinker/ISyscallScanner.hpp>
#include <memory>
#include <sstream>
namespace Relinker {
static constexpr std::uint8_t SYSCALL_BYTE0 = 0x0F;
static constexpr std::uint8_t SYSCALL_BYTE1 = 0x05;
static constexpr std::uint8_t INT80_BYTE0 = 0xCD;
static constexpr std::uint8_t INT80_BYTE1 = 0x80;
static constexpr std::uint8_t SYSENTER_BYTE0 = 0x0F;
static constexpr std::uint8_t SYSENTER_BYTE1 = 0x34;
static constexpr std::uint8_t SYSRET_BYTE0 = 0x0F;
static constexpr std::uint8_t SYSRET_BYTE1 = 0x07;
class SyscallScanner : public ISyscallScanner {
public:
void ScanCodeSectionForSyscalls(
const std::vector<std::uint8_t>& CodeSection,
Offset CodeSectionOffset,
Offset CodeSectionSize) override;
};
void SyscallScanner::ScanCodeSectionForSyscalls(
const std::vector<std::uint8_t>& CodeSection,
Offset CodeSectionOffset,
Offset CodeSectionSize) {
std::size_t limit = std::min(CodeSection.size(), static_cast<std::size_t>(CodeSectionSize));
for (std::size_t i = 0; i + 1 < limit; ++i) {
std::uint8_t b0 = CodeSection[i];
std::uint8_t b1 = CodeSection[i + 1];
bool isSyscall = (b0 == SYSCALL_BYTE0 && b1 == SYSCALL_BYTE1);
bool isInt80 = (b0 == INT80_BYTE0 && b1 == INT80_BYTE1);
bool isSysenter = (b0 == SYSENTER_BYTE0 && b1 == SYSENTER_BYTE1);
bool isSysret = (b0 == SYSRET_BYTE0 && b1 == SYSRET_BYTE1);
if (isSyscall || isInt80 || isSysenter || isSysret) {
Offset instrOffset = CodeSectionOffset + i;
std::ostringstream msg;
msg << "Forbidden syscall instruction at code offset 0x" << std::hex << instrOffset;
throw RelinkerException(msg.str(), instrOffset);
}
}
}
std::unique_ptr<ISyscallScanner> MakeSyscallScanner() {
return std::make_unique<SyscallScanner>();
}
}

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#include "ValidationPolicy.hpp"
#include <sstream>
namespace Relinker {
static constexpr std::uint8_t SYSCALL_BYTE0 = 0x0F;
static constexpr std::uint8_t SYSCALL_BYTE1 = 0x05;
static constexpr std::uint8_t INT80_BYTE0 = 0xCD;
static constexpr std::uint8_t INT80_BYTE1 = 0x80;
static constexpr std::uint8_t SYSENTER_BYTE0 = 0x0F;
static constexpr std::uint8_t SYSENTER_BYTE1 = 0x34;
static constexpr std::uint8_t SYSRET_BYTE0 = 0x0F;
static constexpr std::uint8_t SYSRET_BYTE1 = 0x07;
static constexpr std::uint32_t R_X86_64_NONE = 0;
static constexpr std::uint32_t R_X86_64_64 = 1;
static constexpr std::uint32_t R_X86_64_PC32 = 2;
static constexpr std::uint32_t R_X86_64_GOT32 = 3;
static constexpr std::uint32_t R_X86_64_PLT32 = 4;
static constexpr std::uint32_t R_X86_64_COPY = 5;
static constexpr std::uint32_t R_X86_64_GLOB_DAT = 6;
static constexpr std::uint32_t R_X86_64_JUMP_SLOT = 7;
static constexpr std::uint32_t R_X86_64_RELATIVE = 8;
static constexpr std::uint32_t R_X86_64_GOTPCREL = 9;
static constexpr std::uint32_t R_X86_64_32 = 10;
static constexpr std::uint32_t R_X86_64_32S = 11;
static constexpr std::uint32_t R_X86_64_GOTPCRELX = 41;
static constexpr std::uint32_t R_X86_64_REX_GOTPCRELX = 42;
void ValidationPolicy::_initializeSupportedRelocationTypes() {
_supportedRelocationTypes = {
R_X86_64_NONE,
R_X86_64_64,
R_X86_64_PC32,
R_X86_64_GOT32,
R_X86_64_PLT32,
R_X86_64_COPY,
R_X86_64_GLOB_DAT,
R_X86_64_JUMP_SLOT,
R_X86_64_RELATIVE,
R_X86_64_GOTPCREL,
R_X86_64_32,
R_X86_64_32S,
R_X86_64_GOTPCRELX,
R_X86_64_REX_GOTPCRELX,
};
}
void ValidationPolicy::RegisterLibraryImport(const std::string& Library) {
if (_supportedRelocationTypes.empty()) {
_initializeSupportedRelocationTypes();
}
_importedLibraries.insert(Library);
}
void ValidationPolicy::ValidateSyscallAbsence() {
}
void ValidationPolicy::ValidateRelocationTypeSupported(std::uint32_t RelocationTypeValue, Offset Offset) {
if (_supportedRelocationTypes.empty()) {
_initializeSupportedRelocationTypes();
}
if (_supportedRelocationTypes.find(RelocationTypeValue) == _supportedRelocationTypes.end()) {
std::ostringstream msg;
msg << "Unsupported relocation type 0x" << std::hex << RelocationTypeValue
<< " at offset 0x" << Offset;
throw RelinkerException(msg.str(), Offset);
}
}
void ValidationPolicy::ValidateNidBelongsToLibrary(const std::string& Nid, const std::string& Library) {
if (_importedLibraries.find(Library) == _importedLibraries.end()) {
std::ostringstream msg;
msg << "NID \"" << Nid << "\" references library \"" << Library
<< "\" which is not in the NEEDED list";
throw RelinkerException(msg.str(), 0);
}
}
void ValidationPolicy::ValidateSceStructureSize(Size ExpectedSize, Size ActualSize, Offset Offset) {
if (ActualSize != ExpectedSize) {
std::ostringstream msg;
msg << "SCE structure size mismatch at offset 0x" << std::hex << Offset
<< ": expected " << std::dec << ExpectedSize << ", got " << ActualSize;
throw RelinkerException(msg.str(), Offset);
}
}
void ValidationPolicy::ValidateDynamicFieldInterpretable(const std::string& FieldName, Offset Offset) {
std::ostringstream msg;
msg << "Dynamic field \"" << FieldName
<< "\" cannot be interpreted at offset 0x" << std::hex << Offset;
throw RelinkerException(msg.str(), Offset);
}
void ValidationPolicy::ValidateNoSyscallInstructions(
const std::vector<std::uint8_t>& CodeSection, Offset CodeOffset) {
for (std::size_t i = 0; i + 1 < CodeSection.size(); ++i) {
std::uint8_t b0 = CodeSection[i];
std::uint8_t b1 = CodeSection[i + 1];
bool isSyscall = (b0 == SYSCALL_BYTE0 && b1 == SYSCALL_BYTE1);
bool isInt80 = (b0 == INT80_BYTE0 && b1 == INT80_BYTE1);
bool isSysenter = (b0 == SYSENTER_BYTE0 && b1 == SYSENTER_BYTE1);
bool isSysret = (b0 == SYSRET_BYTE0 && b1 == SYSRET_BYTE1);
if (isSyscall || isInt80 || isSysenter || isSysret) {
Offset instrOffset = CodeOffset + i;
std::ostringstream msg;
msg << "Forbidden syscall instruction at offset 0x" << std::hex << instrOffset;
throw RelinkerException(msg.str(), instrOffset);
}
}
}
}

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#ifndef RELINKER_SRC_VALIDATIONPOLICY_HPP
#define RELINKER_SRC_VALIDATIONPOLICY_HPP
#include <relinker/IValidationPolicy.hpp>
#include <set>
namespace Relinker {
class ValidationPolicy : public IValidationPolicy {
public:
ValidationPolicy() = default;
void ValidateSyscallAbsence() override;
void ValidateRelocationTypeSupported(std::uint32_t RelocationTypeValue, Offset Offset) override;
void ValidateNidBelongsToLibrary(const std::string& Nid, const std::string& Library) override;
void ValidateSceStructureSize(Size ExpectedSize, Size ActualSize, Offset Offset) override;
void ValidateDynamicFieldInterpretable(const std::string& FieldName, Offset Offset) override;
void ValidateNoSyscallInstructions(const std::vector<std::uint8_t>& CodeSection, Offset CodeOffset) override;
void RegisterLibraryImport(const std::string& Library);
private:
std::set<std::string> _importedLibraries;
std::set<std::uint32_t> _supportedRelocationTypes;
void _initializeSupportedRelocationTypes();
};
}
#endif // RELINKER_SRC_VALIDATIONPOLICY_HPP

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# Соглашения по написанию кода
### Именования C++
- Название интерфейса (класса с виртуальными методами без реализации) начинается с `I` (как в C#).
- Названия классов, публичных методов: PascalCase.
- Названия приватных методов и полей: \_camelCase.
- Названия параметров шаблона в стиле C#: `TKey`, `TValue`, `TIterator`.