Keep both sides in GuestSysmodule.cpp (the unknown id check and the Windows
unwind region checks) and in libSceSysmodule.md (Silent stubs and Functional).
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
sceSysmoduleIsLoaded, sceSysmoduleLoadModule and sceSysmoduleUnloadModule
return success for an id missing from the module table, because titles that
load or unload such an id aborted otherwise (b4db9fdd6, a2520aa07). Nothing
tested or recorded it, and two commented-out throws were left in the code.
Remove the commented-out throws, list the three functions under Silent stubs
in the library's technical debt file, and test that unknown ids succeed
without changing state while the internal variants still throw.
Written with AI assistance (Claude).
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
The backward lookup added with the region fix compared the address with a page it could not reach and never ran. The test now queries an ntdll address three pages in, then the first page, then the pages between, and compares each with VirtualQuery. The lookups after the first fail on the cache before the region fix.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
VirtualQuery describes the pages from the queried address to the end of the run of equal pages, so the reported seg0 begins at the queried page. The cached entry returned the first lookup's page for every later address in the run. It now returns the queried page and the bytes up to the end of the cached run, which is what VirtualQuery returns.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
sceSysmoduleGetModuleInfoForUnwind called VirtualQuery and GetMappedFileNameA on every call. VirtualQuery on a large image section costs time proportional to the section (2 us for 16 KiB, 51 us for 8 MiB, 167 us for 32 MiB), and a title that unwinds exceptions while loading calls it for every frame of every throw.
The region and file name of an address inside an image of the Windows loader's module list are kept per region and used while the loader still reports the same image (base, time stamp and size). Other addresses are queried every time.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Measured on a PS5 (firmware 13.60): sceSysmoduleIsLoaded,
sceSysmoduleLoadModule and sceSysmoduleUnloadModule with id 0, and the
Internal and InternalWithArg calls with id 0 or 0x80000000, return
0x805A1000 and leave the WithArg result untouched. They threw.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Return a host module handle for a loaded sysmodule id so callers can
sceKernelDlsym after sceSysmoduleLoadModule. Unknown or null inputs
throw like neighbouring internal load paths; unloaded ids return
0x805A1001. Unblocks Prospero Win past NID D8cuU4d72xM at load.
Co-Authored-By: Composer <noreply@cursor.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Covers code, stack and an anonymous page, and an unmapped address. On Linux the test runs again with APS5_NO_PROCMAP_QUERY so the line scan stays covered.
sceSysmoduleIsLoaded returned 0x80A90002 and the unload calls 0x80A90003
for a module that is not loaded. Neither value exists in the SDK: the
sysmodule facility is 0x5A and the error is 0x805A1001, which titles
compare against (GTA V PPSA04263: cmp eax,0x805a1001 after IsLoaded) to
decide whether to load and initialise the module themselves. Return that
value from all three places and cover it in guest_sysmodule.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Two exports were missing. System modules are linked statically, so load and unload are
reference counts over the known module table, exactly like the existing
sceSysmoduleLoadModuleInternalWithArg and sceSysmoduleUnloadModule:
- sceSysmoduleLoadModuleInternal(uint32_t) -> increments the module's load count, returns 0
- sceSysmoduleUnloadModuleInternal(uint32_t) -> decrements it, or 0x80A90003 when the module
was not loaded
Unknown or zero ids throw, like the sibling internal loader. Adds a CMakeLists.txt so the
library can carry its guest test. Signatures follow the public OpenOrbis SDK headers.
New test core/libs/tests/GuestSysmodule.cpp loads a module twice, unloads it twice and checks
the not-loaded error on a third unload; it fails without the change (the symbols are
undefined) and passes with it.
