PS5MC (PPSA99420, Kodi 22) imports getpriority (miQ1wVwSexE) from
libkernel.prx, one reference, next to chflags in its import order.
Predicted stop once the imports ahead of it are covered (not a run):
FAIL: unresolved ELF import miQ1wVwSexE from libkernel.prx
The NID is computed with tools/nid_names.py and matches aerolib.
Follows FreeBSD 11.4 sys/kern/kern_resource.c sys_getpriority
(8c639945a44588f6cfdddfb057bb5aad88735da0) for the only guest process,
taken to run at nice 0 and to lead its own process group (as kill and
setsid already assume): PRIO_PROCESS and PRIO_PGRP with 0 or its pid,
and PRIO_USER with 0 or its uid 0, return 0; other ids give ESRCH and
an unknown which gives EINVAL. getpriority is a bare system call in
FreeBSD's libc (lib/libc/sys/Symbol.map), so errno is left unchanged
on success.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
(cherry picked from commit 63262245d274342b693fda146ae9feca3752b6e3)
The rebase onto main deleted docs/dev/TechnicalDebt.md, which is now the
index that points into docs/dev/debt/. Restore it from main and add the
missing final newline to docs/dev/debt/libSceNgs2.native.md.
PS5MC (PPSA99420, Kodi 22) imports chflags (ixrw0h2tWuI) from
libkernel.prx, one reference. Predicted stop once the imports ahead of
it (pthread_getthreadid_np, sendfile, wcstok, pause, setrlimit and the
termios calls) are covered (not a run):
FAIL: unresolved ELF import ixrw0h2tWuI from libkernel.prx
The NID is computed with tools/nid_names.py and matches aerolib.
Follows FreeBSD 11.4 (8c639945a44588f6cfdddfb057bb5aad88735da0)
sys/kern/vfs_syscalls.c kern_chflagsat and setfflags, and
sys/ufs/ufs/ufs_vnops.c ufs_setattr, for a root caller: the lookup
through the guest resolver gives EFAULT, ENOENT and ENOTDIR (also for a
file reached through a trailing slash or used as a directory), a bit
outside the 17 UFS flags of sys/sys/stat.h (VNOVAL included) gives
EOPNOTSUPP, and SF_SNAPSHOT gives EPERM, since the snapshot flag cannot
be toggled. No host keeps BSD file flags and stat reports st_flags 0,
so flags 0 succeed without touching the file and any other flag throws
with the flags named. UF_READONLY and the other Windows-attribute flags
are not mapped to FILE_ATTRIBUTE_READONLY and its siblings: UFS stores
them without enforcing them, and on Windows the read-only attribute is
already the owner write bit of chmod.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
(cherry picked from commit 16e5b7ccd04e6467a5a282b6cfc9271304f42244)
PS5CEMU-HAR (PPSA99360, ps5-payload-dev build, relinks with
--trap-sdk-syscall-stubs) imports pthread_setaffinity_np (5KWrg7-ZqvE)
from libkernel.prx. babyhuey's run with #3787 merged onto main e7c70a2d
(PR #3787, 2026-10-12T10:54:44Z) stops at it:
Windows: FAIL: unresolved ELF import 5KWrg7-ZqvE (pthread_setaffinity_np) from libkernel.prx
Linux: undefined symbol: 5KWrg7-ZqvE (pthread_setaffinity_np)
It follows FreeBSD 11.4 libthr thr_affinity.c (8c639945) over
kern_cpuset_setaffinity: another thread is looked up first (EINVAL for
null, ESRCH when unknown or finished, as _thr_find_thread without dead
threads), a size other than the 32-byte cpuset_t returns ERANGE, the
mask is clipped to sceKernelGetAvailableCpumask and an empty result
returns EDEADLK, as cpuset_setaffinity does. The affinity is stored on
the guest thread through scePthreadSetaffinity, for the caller and for
any live guest thread.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Add missing libc.prx symbols required by Unity IL2CPP runtime:
- Implement _Dtest double classification in Math.cpp
- Implement _Inf double constant in Math.cpp
- Implement sceLibcBacktraceGetBufferSize and sceLibcBacktraceSelf in Backtrace.cpp
- Implement _Cnd_signal in Threads.cpp
- Implement _ZNSt8ios_base7_AddstdEPS_ in RuntimeSupport.cpp
- Implement __pointer_type_info and __function_type_info vtables in TypeInfo.cpp
- Remove duplicate stubs from libSceAmpr/Export.cpp
- Add unit tests in GuestMath.cpp and GuestLibcThreads.cpp
- Document unverified behaviors in docs/dev/debt/libc.md
With --trace-imports the entry stub resolves TraceImport_nid_no_patch
in libc.prx and passes each function import through it before writing
the slot: every PLT slot, and a GOT slot only when the original symbol
is a function, so data imports such as __stdoutp keep their address.
Without the option the output is unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
sceCoredumpAttachUserFile (5nc2gdLNsok) and
sceCoredumpAttachMemoryRegionAsUserFile (MEJ7tc7ThwM) get the
signatures of Orbital's db_types.json (cc408367) and SharpProspero's
KernelSystem.cs (5dfdb4b0): (uint32_t userValue, const char* path) and
(uint32_t userValue, const void* mem, size_t size, const char* name).
The handler is never invoked here, so both return
SCE_COREDUMP_ERROR_NOT_IN_COREDUMP_HANDLER (0x81180003, shadPS4
coredump_error.h e0a46675) and attach nothing; a null path or name and
a null, empty or wrapping region throw because the order of the
console's checks is unknown.
Carried from @screamm with author attribution preserved.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
PPSA99058 and PPSA99420 import sceKernelGetCpuTemperature and sceKernelGetSocSensorTemperature and stop at start-up on main. Read the host CPU/package, board and NVMe sensors (hwmon/thermal on Linux, the ACPI thermal zones and the storage temperature property on Windows) and report an unsupported sensor with EINVAL.
2 Ship 2 Harkinian (PPSA99621) imports fchmodat through std::filesystem::permissions and stops at start-up on main. Resolve AT_FDCWD and absolute paths as usual and join other relative paths to the directory descriptor like openat, accept 0 and AT_SYMLINK_NOFOLLOW, and mask the mode to 07777.
TraceImport_nid_no_patch wraps a function of a library named in
APS5_TRACE_CALLS in a thunk that records the import, the thread and
the caller in a ring and counts the call, then jumps to the function.
One target keeps one thunk, so function pointers compare equal. The
crash and abort reports print the last 64 calls and the 32 most called
imports. Nothing calls TraceImport_nid_no_patch yet.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Porpoise (PPSA99764) stops on its weak chroot import (#3632, #4497).
Run 5 on main c2565f014, and again on a copy of that runtime:
FAIL: unresolved ELF import AKknh8Cx-V8 from libkernel_sys.prx
Its only call is in put_root_back (src/porpoise_jailbreak.cpp,
elripalda/Porpoise-Dolphin-Emulator-for-PS5 2ed1ab5a06995aa1): after a
jailbreak daemon has made the console's root its root and /app0 is
gone, it calls fchdir on the descriptor of "/" it opened at start, then
chroot("."), and checks the result. So it only ever puts back the root
it started in, and it does not use paths under any other root.
On top of the lookup errors of the previous commit, chroot now follows
FreeBSD 11.4 sys_chroot and pwd_chroot (8c639945, vfs_syscalls.c and
kern_descrip.c) for that case: a directory that is the guest root
("/", "/..", "." after fchdir to "/") succeeds without a change, since
fd_rdir would be set to the vnode it already is. The guest is taken
never to have changed its root, so with chroot_allow_open_directories 1
an open directory does not give EPERM. ENAMETOOLONG is added as in
pathconf, and a ".." through a file reports ENOTDIR instead of
escaping as a filesystem_error. Any other directory still throws: the
resolver's root and mount aliases are fixed, and no title is known that
needs a real new root.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Porpoise (PPSA99764) imports chroot (AKknh8Cx-V8) from
libkernel_sys.prx, not libkernel.prx, one reference. Predicted stop
once pathconf, the pthread_attr calls and ftrylockfile ahead of it are
covered (not a run):
FAIL: unresolved ELF import AKknh8Cx-V8 from libkernel_sys.prx
The NID is computed with tools/nid_names.py and matches aerolib.
Follows FreeBSD 11.4 sys/kern/vfs_syscalls.c sys_chroot and change_dir
(8c639945a44588f6cfdddfb057bb5aad88735da0) for a root caller up to the
lookup: EFAULT for a null path, ENOENT for an empty or missing one,
ENOTDIR for a file or a path through a file. A directory that is found
throws with the path named: the resolver's root is fixed and the mount
aliases (/app0, /savedata0) are host paths that do not move with it,
so it cannot be re-based, and a real chroot is not modelled. Nothing
shows that Porpoise calls it.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
The console's mouse reports relative motion, so the host cursor can never line
up with the cursor a title draws. While a title has a mouse open and the
window is focused the host cursor is hidden and captured, released on focus
loss or while the pad's mouse-to-stick toggle is on. Motion deltas are scaled
from the presented image's size in window units to the title's display
resolution with sub-pixel carry, so the title's cursor travels as far as the
host pointer would, on scaled desktops and letterboxed windows alike.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
PS5MC (PPSA99420, Kodi 22) imports clock_settime (d7nUj1LOdDU) from
libkernel.prx, one reference, after sigwaitinfo in its import order.
Predicted stop once the imports ahead of it are covered (not a run):
FAIL: unresolved ELF import d7nUj1LOdDU from libkernel.prx
The NID is computed with tools/nid_names.py and matches aerolib.
Follows FreeBSD 11.4 sys/kern/kern_time.c sys_clock_settime and
kern_clock_settime (8c639945a44588f6cfdddfb057bb5aad88735da0) for a
root caller: EFAULT for a null time (copyin), EINVAL for any clock but
CLOCK_REALTIME and for a negative tv_sec or a tv_nsec outside 0 to
999999999. A valid CLOCK_REALTIME request throws with the requested
time named, since the host clock must not be set and no guest clock
offset is kept.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Co-authored-by: David <david@example.com>
A flip packet now delivers the queue's end-of-pipe event once the work
recorded before it completes, as a RELEASE_MEM with INT_SEL does. Minecraft
(PPSA17221) registers the graphics event, never requests an interrupt in its
releases, and waits on the event after every flip while holding its render
lock, so it presented one frame and then waited forever.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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