mirror of https://github.com/ran-j/PS2Recomp.git synced 2026-09-26 08:51:05 -04:00

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T

Sinan KARAKAYA 226bae250b Set the x86 SIMD baseline that the code already requires

ps2_runtime.h includes <smmintrin.h> unconditionally, and the
recompiler emits SSE4.1-only intrinsics (_mm_blendv_ps and friends) for
the COP2 and FPU select idioms. SSE4.1 is therefore a hard requirement
of the codebase, not a tuning option.

Nothing sets it for GCC or Clang. MSVC does not need it -- its
intrinsics are not gated behind a target feature -- and the only place
any x86 feature is named is /arch:AVX2 inside EnableFastReleaseMode,
which is MSVC-only and applies to Release and RelWithDebInfo only. GCC
and Clang default to the plain x86-64 baseline, which is SSE2, so on a
stock Linux or macOS toolchain the affected translation units fail with
"always_inline function ... requires target feature 'sse4.1'".

Adds EnableX86SimdBaseline and applies it to ps2_runtime in every
configuration rather than in EnableFastReleaseMode, since a Debug build
needs it just as much. PUBLIC, so recompiled game code linking against
ps2_runtime inherits it -- that code is where most of the SSE4.1
intrinsics actually are. Guarded on the target processor so ARM builds
are unaffected.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

2026-08-17 22:57:21 +02:00

cmake

Set the x86 SIMD baseline that the code already requires

2026-08-17 22:57:21 +02:00

include

Feature/gs refactor (#204 )

2026-08-13 22:49:04 -03:00

src

Return true after queueing a guest syscall override

2026-08-17 22:57:21 +02:00

vita/module

Feature/random fixes platform support (#179 )

2026-07-22 02:37:53 -03:00

CMakeLists.txt

Set the x86 SIMD baseline that the code already requires

2026-08-17 22:57:21 +02:00

Readme.md

Feature/runtime ecosystem refactor (#107 )

2026-04-04 23:09:56 -03:00

Readme.md

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.

Vita Build Notes

The Vita runtime uses Quenom/raylib-5.5-vita for vita build. I recommend build runtime only.

Expected environment:

VITASDK points to your VitaSDK root.
Quenom/raylib-5.5-vita has already been built and installed into $VITASDK/arm-vita-eabi.
SDL2 with the PVR backend required by that raylib fork is also installed into the same VitaSDK prefix.
PS2X_DEFAULT_BOOT_ELF is mandatory, you need to define where your game is like "ux0:data/RANJ00001/game/SLUS_201.84".

The CMake for ps2xRuntime consumes those preinstalled headers and libraries from VitaSDK. It does not fetch or install the Vita raylib fork for you.

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