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https://github.com/boykopovar/AnyPS5.git
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Nithishvelan M
f677163eec
Add sceSysmoduleUnloadModuleInternalWithArg to match the existing sceSysmoduleLoadModuleInternalWithArg export. Decrement the module load count on valid internal IDs, check module existence in kModuleTable, and set the return pointer when provided. Add unit test coverage in GuestSysmodule for invalid values, unloaded modules, successful argument unload, and unknown IDs. Update technical debt documentation.
17 lines
3.0 KiB
Markdown
17 lines
3.0 KiB
Markdown
# libSceSysmodule technical debt
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### Silent stubs
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- [sceSysmoduleIsLoaded, sceSysmoduleLoadModule, sceSysmoduleUnloadModule](../../../core/libs/prx/libSceSysmodule/Export.cpp) (libSceSysmodule) accept a module id missing from the module table: they log it and return 0 without loading anything, so `sceSysmoduleIsLoaded` reports an unknown module as loaded and unloading it succeeds, because titles that load or unload such an id aborted otherwise. The internal variants (`sceSysmoduleLoadModuleInternal`, `sceSysmoduleUnloadModuleInternal`, `sceSysmoduleLoadModuleInternalWithArg`, `sceSysmoduleUnloadModuleInternalWithArg`, `sceSysmoduleGetModuleHandleInternal`) throw for an unknown id. What the console returns for an id it does not know is not verified.
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### Unknown function info
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- [kModuleTable](../../../core/libs/prx/libSceSysmodule/ModuleTable.hpp) (libSceSysmodule) - module id 0x00000132 is named `libSceProprietaryVoiceChatHelperPrx`, the name of the built module, because `sceSysmoduleGetModuleHandleInternal` opens `libs/<table name>.prx`. The name the console's table uses for this id is not verified
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- [kModuleTable](../../../core/libs/prx/libSceSysmodule/ModuleTable.hpp) (libSceSysmodule) - module IDs registered from decrypted PS5 firmware 1.00–3.20 sysmodule lookup tables:
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- User-space IDs (0x00000005, 0x0000010a, 0x0000010e, 0x0000011b, 0x00000125, 0x00000126, 0x00000127, 0x00000128, 0x0000012a, 0x0000012b, 0x00000130) and internal IDs (0x8000007b, 0x8000007e, 0x8000007f, 0x80000080, 0x80000082, 0x80000083, 0x80000084, 0x80000085, 0x80000086, 0x80000087, 0x80000088, 0x80000089, 0x8000008e, 0x80000090, 0x80000091, 0x80000092, 0x80000093, 0x80000095, 0x80000097, 0x80000099, 0x8000009b, 0x8000009c, 0x8000009e, 0x8000009f, 0x800000a0, 0x800000a1, 0x800000a2, 0x800000a3, 0x800000a4, 0x800000a6, 0x800000a7, 0x800000a8, 0x800000a9, 0x800000ad, 0x800000ae, 0x800000af, 0x800000b0, 0x800000b2, 0x800000b3, 0x800000b4, 0x800000b5, 0x800000b6, 0x800000b7, 0x800000b9, 0x800000ba, 0x800000bb, 0x800000bc, 0x800000bd, 0x800000be, 0x800000bf, 0x800000c3); whether all mapped PRX modules exist as separate runtime files or are embedded in system daemons on retail consoles is unverified
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- Dual IDs for `libSceNgs2` (0x0000000b user / 0x80000090 internal) and `libSceHdrScopes` (0x00000109 user / 0x800000bd internal) reflect distinct public and internal sysmodule identifiers defined in PS5 firmware SDKs
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### Functional
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- [sceSysmoduleGetModuleInfoForUnwind](../../../core/libs/prx/libSceSysmodule/Export.cpp) (libSceSysmodule) - on Windows the region and file name of an address inside a loaded image are cached after the first lookup, because `VirtualQuery` on a large image section is slow. An entry is used only while the loader still reports the same image for the address (same base, time stamp and size). A page protection change inside the image after the first lookup, which would split or merge the region `VirtualQuery` reports, is not noticed. Addresses outside loaded images are queried every time
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