José Luis Caravaca Carretero
df53ff59d9
* [Json] Implement sce::Json::Value and Json::String construct/set/destroy libSceJson previously only had the Initializer/MemAllocator setup path. The Value and String classes themselves were entirely absent, so a Prospero title that builds a JSON tree (Quake PPSA01880 does, to shape a web-API request) hit unresolved imports and faulted on the call. The imports it left unresolved right before its access violation are exactly these Value ctors/setters and String ctor/dtor. Model the Value/String payload host-side (JsonObjectHeap), keyed by the guest `this` pointer, following the handle-shadow pattern already used by Ngs2Exports. The guest object bytes are deliberately not written: these objects are usually stack-allocated with an unknown real layout, and writing a guessed layout risks smashing an adjacent stack canary (the same hazard the AudioOut2 context-param note in this tree records). Constructors and setters follow the Itanium ABI and return `this` in rax, which is correct whether the real setter returns void or Value&. Covered NIDs (complete-object C1/D1 variants, matching the observed imports): Value(default/bool/long/ulong/double/ValueType/char*/String), Value::~Value, Value::set(bool/long/ulong/double/ValueType/char*/String), Value::clear, String(char*/default/copy), String::~String. Only the payload the guest can reach through library methods is modelled; direct guest reads of the object bytes are out of scope and would need observed layout evidence. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * [Tests] Add SharpEmu.Libs.Tests covering the Json Value/String exports First test project for SharpEmu.Libs (xunit), the SharpEmu.Libs.Tests layout the maintainer already agreed to in issue #36. - A FakeCpuMemory (single contiguous region) drives the exports at the CpuContext level with no live guest. - Direct-call tests: ctor/setter round-trips for bool/int/uint/double (read from xmm0)/char*/String/ValueType, destructor cleanup, and the graceful-degradation paths (missing String shadow and a faulting char* pointer both fall back to the empty string instead of throwing). - Registration test: a real ModuleManager scans SharpEmu.Libs and the nine NIDs Quake left unresolved now resolve to the libSceJson exports and dispatch cleanly (returns `this` in rax). InternalsVisibleTo exposes JsonObjectHeap to the test assembly. The test project's packages.lock.json is committed for CI locked-mode restore; CI does not run tests yet, left as a maintainer decision. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * [Json] Add Initializer::setGlobalNullAccessCallback Quake calls it during kexPSNWebAPI::Initialize and treats the not-found error as fatal for the whole Np Web API bring-up. Store the guest hook (never invoked by this HLE: shadows degrade to defaults instead of dereferencing missing members) and return success. Verified against the dump: the "setGlobalNullAccessCallback failed (0x80020002)" line is gone and kexPSNWebAPI::Initialize now logs "Np Web API Initialized"; the next blockers are sceNpAuthCreateRequest and sceUserServiceInitialize ordering, outside libSceJson. Also pins both Json test classes to one xunit collection: they share JsonObjectHeap statics and parallel class execution raced ResetForTests against a running test. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
SharpEmu
An experimental PlayStation 5 emulator for Windows, Linux and macOS.
Join our Discord for development updates, compatibility discussions, support, and community chat.
Warning
Currently the primary development target is Windows.
Warning
SharpEmu is an experimental PS5 emulator developed from scratch in C#. The current focus is on accuracy and infrastructure setup rather than game-specific compatibility.
Info
SharpEmu is an emulator project currently in its early stages of development.
This project is developed purely for research and educational purposes. There are no commercial goals associated with it. We enjoy learning about system architecture and reverse engineering.
SharpEmu focuses exclusively on the PlayStation 5.
Our goal is not to emulate PS4 games, as there is already an excellent emulator dedicated to that platform: ShadPS4.
Status
The emulator can currently load the eboot.bin of real games, execute native CPU instructions, and partially handle kernel-related functionality. However, several critical components are still missing.
Current capabilities include:
- Loading
eboot.binand.elffiles - Executing native CPU instructions
- Reading basic game metadata (title, version, etc.)
- Loading system modules (
prx/sys_module) - Partial support for some kernel functions
FiberandAMPRexports- PlayGo scenarios
- Initial loading game files
- Shader/resource submits and AGC initial
- Video outputs in some games
Some games have reached like sceVideoOut and AGC stages.
Currently the project primarily targets Windows. Cross-platform support (Linux and macOS) is planned, but development is currently focused on Windows to simplify early-stage debugging and iteration.
Using
- Build or Publish project or download in release tab.
- Open Powershell.
- Run Emulator GUI.
- Or command:
.\SharpEmu "eboot.bin" 2>&1 | Tee-Object -FilePath "log.txt"
Games Tested
-
Demon's Souls Remake
- Demon's Souls [PPSA01341]
- Demon's Souls is now video loop. Shaders are ready to be converted to SPIR-V/Vulkan. We are continuing our work on this.
-
Poppy Playtime Chapter 1
-
SILENT HILL: The Short Message
-
Dreaming Sarah
- Dreaming Sarah [PPSA02929]
- Real texture rendering for this game;
Important
This project does not support or condone piracy.
All games used during development and testing are dumped from consoles that we personally own.
Users are expected to use legally obtained copies of their games.
Build
- Install the .NET SDK.
- Clone the repository:
git clone https://github.com/par274/sharpemu.git - Open the solution file (
SharpEmu.slnx) in VSCode. - Build the project:
dotnet buildordotnet publish - Build artifacts will be located in the
artifactsdirectory.
Disclaimer
SharpEmu is an experimental emulator intended for research and educational purposes.
This project does not contain any copyrighted system firmware, game data, or proprietary PlayStation assets.
Special Thanks
The following projects were extremely helpful during development:
-
ShadPS4
Helped with understanding the basic architecture of the PlayStation 4. -
Kyty
One of the few PS5 emulator projects available and very useful for studying native code execution. -
Ryujinx
Provided valuable references for filesystem handling and low-level C# implementation patterns.
License
Contributing
Before opening an issue or pull request, please read our contribution guidelines:
The guide covers:
- Coding style and formatting
- AI-assisted contributions
- Pull request expectations
- Testing guidelines
- Legal and reverse engineering policy