Cloudberry Kingdom (PPSA23827, #3177) calls kqueue right after start-up
and stopped on the throwing declarations merged with #3337; Palworld's
Discord module (PPSA23126, #2648) imports kevent.
kqueue reserves a host null-device descriptor in the file descriptor
space and registers it as an event queue that reports each ready event
once per call and moves level-triggered ones behind the others, as
kqueue_scan does. close and sceKernelClose close the queue and drop the
descriptor's events from every queue, dup2 drops them for the target,
and dup/dup2 of a kqueue throw, so a reused descriptor number is never
read as a stale kqueue.
kevent follows FreeBSD 11 kern_event.c (release/11.0.1 34bd3475):
kqueue_kevent for the changelist (filter 0 skipped, EV_SYSFLAGS
cleared, EV_ERROR receipts with the errno in data, EV_RECEIPT, the
early return when nevents is exhausted), kqueue_register for EV_ADD,
EV_DELETE, EV_ENABLE, EBADF, ENOENT and EINVAL, kqueue_scan for the
timeout (EINVAL for a bad timespec, zero polls, above INT32_MAX waits
forever) and filt_timerattach, filt_usertouch for the timer and user
filters. Read and write events reuse the guest socket poll of
sceKernelAddReadEvent/WriteEvent.
Throws: other filters, EV_DISABLE, EV_DISPATCH, EV_FORCEONESHOT,
NOTE_LOWAT, EV_CLEAR on a socket, read/write events on non-socket
descriptors or another kqueue, changes to an existing timer (11.0 and
11.4 differ), a NOTE_NSECONDS fraction above one second and a negative
nevents. Recorded in TechnicalDebt.
Test guest_kqueue covers creation and close, timers, a user event
triggered from another thread, read and write events on a socket pair,
EV_ERROR receipts, the timeout and the error cases.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
PS5MC (PPSA99420) imports setitimer (hPWDGx8ioXQ, aerolib) at registry
index 472, after tcsetpgrp and before getitimer. Predicted stop:
"FAIL: unresolved ELF import hPWDGx8ioXQ from libkernel.prx".
setitimer follows FreeBSD 11.4 kern_time.c (8c639945) sys_setitimer and
kern_setitimer: EINVAL for an unknown timer and for an itimerfix failure
or more than INT32_MAX / 2 seconds; a zero value clears the interval and
disarms; a null value reads the timer, EFAULT when the output is null too.
ITIMER_REAL shares the alarm state, now with an interval that re-arms it
as realitexpire does; alarm clears it, as FreeBSD's alarm.c does.
Guest SIGALRM handlers are not run, so an expiry with a handler, or with
SIGALRM blocked (signals are never left pending), throws naming the
interval; SIG_IGN drops it and the default disposition exits with 142,
as alarm already did. Intervals below 1 ms throw (itimerfix rounds them
to tick / 16 and the console's hz is unknown). ITIMER_VIRTUAL and
ITIMER_PROF throw when armed and read and disarm as zero.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
sceCoredumpAttachMemoryRegion and sceCoredumpAttachUserMemoryFile take
(uint32_t userValue, const void* mem, size_t size): the Orbital IDA type
database and the SharpProspero bindings agree on the first, the second
has only SharpProspero. Attaching belongs inside the core dump handler
the system runs after the process stops; a call from anywhere else gets
SCE_COREDUMP_ERROR_NOT_IN_COREDUMP_HANDLER. The handler is never invoked
here, so every call returns that error and nothing is recorded. Whether
the console checks the region before the calling context is unknown, so
a null, empty or wrapping region throws.
The error value 0x81180003 is inferred from fpPS4's 0x81180001 and
0x81180002 and the numbering of the Vita's SceCoredump error table;
TechnicalDebt records the sources and what remains unverified.
guest_coredump_attach: the error before, during and after a handler
registration, from another thread too, without running the handler or
touching the region; null, empty and wrapping regions throw naming the
function.
Review of #3787 asked for no retries after an error in Jit.cpp.
Linux: memfd_create is called once with MFD_CLOEXEC. MFD_EXEC was
tried first and dropped on EINVAL; the flag only sets the file's execute
permission bits (Linux 6.3 and later), not whether the object maps
PROT_EXEC, which is decided by the mapping protection, as for the direct
memory memfd in DirectMemory.cpp. A one-shot choice from the headers
would fail on older kernels, so the flag is dropped; TechnicalDebt
records it.
Windows: the delete-on-close backing file is named from the process id,
a process-wide atomic counter and the performance counter, so CREATE_NEW
cannot meet an existing name, and any CreateFileW failure throws with
the Win32 error instead of looping up to 64 times on ERROR_FILE_EXISTS.
The descriptor stays a CRT descriptor on the file, so close, dup and
dup2 keep working as before.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
The three JIT shared memory exports (avvJ3J0H0EY, MR221Mwo0Pc,
YKT49TOLQWs) are absent imports of three homebrew titles that cannot
finish loading without them. Predicted next stops (registry order):
- VLC PPSA85300 after getdtablesize (idx 354):
"FAIL: unresolved ELF import YKT49TOLQWs from libkernel.prx"
(Map idx 452, Create idx 462)
- XPSemu PPSA97358 after tcsendbreak (idx 214):
"FAIL: unresolved ELF import avvJ3J0H0EY from libkernel.prx"
(Create idx 398, Map idx 399)
- RetroArch PPSA99169:
"FAIL: unresolved ELF import avvJ3J0H0EY from libkernel.prx"
(Create 476, Alias 477, Map 478)
XPSemu and VLC (ps5/compat/mmap.c, __wrap_mmap) create an object for
every anonymous PROT_EXEC mapping (QEMU's TCG buffer) and map it with
the same protection, falling back to flexible memory on any non-zero
return. RetroArch's eboot runs a probe: Create("ps5-platform-probe",
0x10000, 7, &fd), Alias(fd, 3, &alias), Map(fd, 5, &address), then logs
"jit create=0x%08x alias=0x%08x map=0x%08x".
Signatures from Orbital cc408367 tools/ida/db_types.json (name, len,
maxProt, fdOut; fd, maxProt, fdOut; fd, prot, startOut), matching
ps4sdk 4df9d001 include/sce/kernel.h, ps5-jar-loader 8034177e
LibKernel.java and the three titles' call sites. SharpProspero 5dfdb4b0
declares the alias as returning the descriptor; the RetroArch call site
passes an out pointer.
The object is a host anonymous file (memfd on Linux, a delete-on-close
temporary file mapped as a PAGE_EXECUTE_READWRITE section on Windows),
the alias a duplicate descriptor, and each map maps the whole object
through the direct memory placement path, so a write through one view
is visible through the others. Bad lengths and protection bits are
EINVAL, protection past the descriptor's maximum is EACCES (FreeBSD 11
vm_map_protect), unknown descriptors are EBADF; close, dup and dup2
keep the descriptor table in step. Unverified details are recorded in
TechnicalDebt.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Adds tcsendbreak (vXE-dIUIZlE), tcdrain (brGGJWsZauw), tcflush
(FxHW5NuEXsY), tcflow (OG8xRaGIpqk), tcgetpgrp (5OEl1mRhUm0) and
tcsetpgrp (YMuesZTyTl4) next to tcgetattr and tcsetattr in
File/src/Terminal.cpp. The NIDs come from tools/nid_names.py and match
aerolib.csv (zecoxao/sce_symbols 2883963a).
They follow FreeBSD 11.4 lib/libc/gen/termios.c (8c639945), which
implements each one over a terminal ioctl: tcflush returns EINVAL for a
queue other than TCIFLUSH, TCOFLUSH or TCIOFLUSH and tcflow for an
action outside TCOOFF..TCION before the descriptor is used; every other
call fails with the error the merged tcgetattr gives (EBADF for a closed
descriptor, ENOTTY for a file or pipe, EADDRNOTAVAIL or EOPNOTSUPP for a
socket, per soo_ioctl and in_control/in6_control). tcsendbreak fails on
TIOCSBRK before its 0.4 s pause, and tcflow's TCIOFF/TCION fail in
tcgetattr. FreeBSD's pipe_ioctl answers TIOCGPGRP/TIOCSPGRP on a pipe or
FIFO with the SIGIO owner, which is not modelled, so tcgetpgrp and
tcsetpgrp throw on a host pipe above descriptor 2.
Titles (homebrew catalog #1578), predicted stops from registry order:
- PS5MC PPSA99420 imports tcsendbreak (442), tcdrain (443), tcflush
(444), tcflow (445), tcgetpgrp (462) and tcsetpgrp (463); once pause
and setrlimit are in, it stops at
"FAIL: unresolved ELF import vXE-dIUIZlE from libkernel.prx".
- XPSemu PPSA97358 imports tcsendbreak (214), its first uncovered import
after execv, sigwait, setrlimit, mlockall, setuid and getopt:
"FAIL: unresolved ELF import vXE-dIUIZlE from libkernel.prx".
guest_terminal covers each call over stdin, stdout, stderr, a file, both
pipe ends and an AF_INET socket, the EINVAL cases (also on -1), and
EBADF for -1, a closed socket, a closed pipe and a closed file.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
dup and dup2 of a Windows directory descriptor threw. FreeBSD's
kern_dup makes both descriptors refer to one open file, so they share
the read position; the duplicate now points at the same DirectoryState,
which getdents and lseek go through, and keeps it after the original
is closed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The title-module variants of sceKernelGetModuleList and
sceKernelGetModuleInfo, following shadPS4: the list leaves out system
libraries and the info call answers EPERM for one. A system library is
a loaded .prx image that is not a relinked title module.
NHL 27 (PPSA34063) imports both and fails to load without them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A Windows GUI build started without standard handles has no descriptor 2.
_dup(2) then reached the invalid-parameter handler, which aborts, before the
"cannot keep the host standard error" error could be thrown. It now goes
through WithoutParameterHandler like the other descriptor calls in this file.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Guest descriptors are host descriptors, so a guest that moves standard
error with dup2 also moves the stream sceKernelDebugOutText writes to. A
title that forwards its standard error to the kernel log through a pipe
then reads its own debug output back and logs it again without end. Before
the guest's first dup2 onto descriptor 2, the host's standard error is kept,
and sceKernelDebugOutText writes there.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
David
Adrià
Yossi Yadgar
screamm
dantdmdarealguy
PrintOrb
LeandroLP23
Dean
poonasor
Ori Shamir
Scott Schuster
Ondra97
winstrex
Hannah Lyons