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https://github.com/ran-j/PS2Recomp.git
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Ranieri
cad1ca0bb5
* fix: CRITICAL fix on code gen on generating BEQ translation, I added a small yeld because goto could spin forever and monopolize guest execution * feat: add scratchpad alias base and improve scratchpad address handling * feat: added debug logging on GifArbiter for submit and drain operations * feat: add interrupt and thread management syscall implementations fix: change some IDs calls to match ps2sdk * feat: added vif1 logs * feat: added logs on gs gpu feat: added performLocalToLocalTransfer to GS emulation path for TRXDIR = 2. (emulates the PS2 GS “copy this rectangle from one place in VRAM to another”) * feat: added PSMT8 and refactor PSMT4 * feat: some identation on vu1 feat: added some logs on vu1 * feat: added GuestExecutionScope to temporarily stop owning guest execution, then restore it exactly as it was. feat: added vsync wizardry feat: added some regression test * fix: fix gs logger * feat: remove extra logs I think they will help no one feat: move join all threads to prevent the app to get stuck on close, but now it random crash on closing feat: one more small test on psmt4 to try fix ghosting on re code veronica * feat: added a small case for exporter from ghidra for metal slug 3 * feat: added ugly code to pass on test
Runtime Library
The runtime library provides the execution environment for recompiled code, including:
- Memory management (32MB main RAM, scratchpad, etc.)
- Register context (128-bit GPRs, VU0 registers, etc.)
- Function table for dynamic linking
- Basic PS2 system call stubs
How to use:
Take your decompiled code and place the cpp files on ps2xRuntime/src/runner and header files on ps2xRuntime/include and compile/be happy.
Adding Custom Function Implementations
You can add custom implementations for PS2 system calls or game functions by:
- Creating function implementations that match the signature:
void function_name(uint8_t* rdram, R5900Context* ctx, PS2Runtime *runtime);
- Registering them with the runtime:
runtime.registerFunction(address, function_name);
Advanced Features
Memory Translation The runtime handles PS2's memory addressing, including:
- KSEG0/KSEG1 direct mapping
- TLB lookups for user memory
- Special memory areas (scratchpad, I/O registers)
Vector Unit Support
PS2-specific 128-bit MMI instructions and VU0 macro mode instructions are supported via SSE/AVX intrinsics.
Instruction Patching
You can patch specific instructions in the recompiled code to fix game issues or implement custom behavior.
Limitations
- Graphics and sound output require external implementations
- Some PS2-specific hardware features may not be fully supported
- Performance may vary based on the complexity of the game