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Ran-j
40 lines
1.3 KiB
Markdown
40 lines
1.3 KiB
Markdown
# Runtime Library
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The runtime library provides the execution environment for recompiled code, including:
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* Memory management (32MB main RAM, scratchpad, etc.)
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* Register context (128-bit GPRs, VU0 registers, etc.)
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* Function table for dynamic linking
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* Basic PS2 system call stubs
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## Adding Custom Function Implementations
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You can add custom implementations for PS2 system calls or game functions by:
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1. Creating function implementations that match the signature:
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```cpp
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void function_name(uint8_t* rdram, R5900Context* ctx);
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```
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2. Registering them with the runtime:
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```cpp
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runtime.registerFunction(address, function_name);
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```
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## Advanced Features
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Memory Translation
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The runtime handles PS2's memory addressing, including:
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* KSEG0/KSEG1 direct mapping
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* TLB lookups for user memory
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* Special memory areas (scratchpad, I/O registers)
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## Vector Unit Support
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PS2-specific 128-bit MMI instructions and VU0 macro mode instructions are supported via SSE/AVX intrinsics.
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## Instruction Patching
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You can patch specific instructions in the recompiled code to fix game issues or implement custom behavior.
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## Limitations
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* Graphics and sound output require external implementations
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* Some PS2-specific hardware features may not be fully supported
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* Performance may vary based on the complexity of the game |