Exports pause (EDyhWelj7UY), sigwait (mrbHXqK8wkg) and sigwaitinfo
(Uq5BGthgbl4) from libkernel. NIDs computed with tools/nid_names.py and
matched in aerolib; ps5-payload-dev/sdk f5d40f02 sce_stubs/libkernel.c
places all three in libkernel.
They throw like the merged sigtimedwait (#3430), with the same message
pattern: "sigwait: waiting for a pending signal", "sigwaitinfo: waiting
for a pending signal" and "pause: waiting for a delivered signal". In
FreeBSD 11.4 (8c639945) sigwaitinfo is kern_sigtimedwait without a
timeout (sys/kern/kern_sig.c:1212), sigwait is the same wait returning
the error number (kern_sig.c:1150, lib/libthr/thread/thr_sig.c:676-728)
and pause is sigsuspend of the current mask (lib/libc/gen/pause.c:46-56).
AnyPS5 never leaves a guest signal pending (blocked signals are dropped
in Dispatch, raise delivers at once), so there is nothing to take, and
raise, kill and pthread_kill run a handler only on the calling thread,
so nothing can end a pause.
Titles (predicted stops, registry order; not observed runs):
- Ruffle PPSA68091, observed today
"FAIL: unresolved ELF import 1t1-JoZ0sZQ from libSceLibcInternal.prx"
(sinhf, #3519), predicted next
"FAIL: unresolved ELF import EDyhWelj7UY from libkernel.prx"
(pause, call site 0x8F7266).
- RetroArch PPSA99169: pause (0x30DB1, an address table entry).
- PS5MC PPSA99420: pause (0x3BD80F6, 0x3C9E220), sigwait (0x3C9E4C7),
sigwaitinfo (0x3C9E588).
- XPSemu PPSA97358: sigwait (0xE02AEC, 0x1101294, 0x1101368), QEMU's
dummy vCPU thread and sigwait_compat thread.
guest_sigtimedwait now also checks the three throws, with an empty set,
a null info, a SIGINT raised while blocked, and that neither the output
nor the blocked mask changes. TechnicalDebt records the call sites.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
David
Achraf Reyani