AnyPS5/docs/dev/debt/libSceSysmodule.md

libSceSysmodule technical debt

Silent stubs

• sceSysmoduleIsLoaded, sceSysmoduleLoadModule, sceSysmoduleUnloadModule (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, sceSysmoduleGetModuleHandleInternal) throw for an unknown id. What the console returns for an id it does not know is not verified.

Known modules

• kModuleTable (libSceSysmodule) - module ID 0x00000132 maps to libSceProprietaryVoiceChatHelperPrx as verified in #5017 and reported in Discussion #6344 for EA SPORTS FC 27 (PPSA34015).

Functional

• sceSysmoduleGetModuleInfoForUnwind (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