Files
PS2Recomp/ps2xRuntime
Ranieri 4a538d3589 Feature/resident evil code veronica patch 1 (#60)
* feat: split runtime code in small files to be easy to develop

* feat: split stubs in inl files

* feat: function auto link function treat functions with underscore as same as without underscore

* feat: remove underscore prefix from stubs

* feat: thread and flags refactor

* feat: propagate request stop
feat: some elf validation on runtime

* feat: remove Z7 compiler options
feat: added a literal float case error on vu

* fix: fix critical recompiler error on marking pc calls

* feat: better system interrupt
refactor: small refactor on thread system

* feat: stubs implements for resident evil code veronica

* feat: merge fileio
2026-02-17 23:33:44 -03:00
..
2025-04-12 03:49:35 -03:00
2025-11-29 01:50:07 -03:00

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:

  1. Creating function implementations that match the signature:
void function_name(uint8_t* rdram, R5900Context* ctx, PS2Runtime *runtime);
  1. 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