Gran Turismo 7 (PPSA01317) fails to load on unresolved imports and on
two needed libraries that AnyPS5 does not build (#4782).
- sceAppContentDownloadDataFormat empties /download0, as
sceAppContentTemporaryDataFormat does for /temp0.
- sceNpAuthSetTimeout returns REQUEST_NOT_FOUND for an unknown request
like the other request calls, and OK otherwise; no request reaches the
network the timeouts would bound.
- sceNpWebApi2PushEventSetHandleTimeout throws for an unknown library
context, like sceNpWebApi2GetMemoryPoolStats, and returns OK
otherwise; push event handles are not tracked and nothing waits on
one offline.
- sceSslDisableVerifyOption, sceSslGetAlpnSelected, sceSslSetAlpn,
sceSslSetMinSslVersion, sceAudioOutDeviceIdOpen and the unnamed
libScePsml NIDs xNZM9Y5lf-M and lcZD9tJraAw are declared without
parameters and throw; their signatures are unknown.
- libSceUsbStorage and libSceUsbStorageDialog exist with no exports,
like libSceXml: the title lists both as needed but imports nothing
from them.
Each assumption is recorded in the library's technical debt file.
Co-authored-by: dawid-swiecicki <8942606+dawid-swiecicki@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A texture over a depth surface could only sample one 2D slice of the
plane's own format; 2D arrays, cubes and the R16_UINT view of a D16
plane were refused ("sampling the depth plane of depth surface ... is
not implemented"). A one-slice 2D array now views the depth image as an
array. Several slices, a cube, or an integer view of a D16 plane are
copied into a DepthPlaneCopy image at every use: each slice from the
depth surface bound at its address (base plus one 64 KiB-block depth
slice per layer), otherwise from guest memory, detiled. A depth-bits
R16_UINT view (a depth swizzle) keeps the depth copy, since the shader
converts the sampled depth to its bits itself (GTA V's compute
0x242d4a200 samples a D16 plane array that way, reported by
@tibzejoker). Such a texture is not kept in resource templates.
Storage-image access to depth surfaces is no longer part of this
change; #4500 implements it.
TechnicalDebt (Depth plane copies) and ARCHITECTURE describe the copy and
what still throws.
inotify queues IN_MOVED_FROM and IN_MOVED_TO of a rename one after the
other. The watcher thread could read the first before the second was
queued and report a rename inside the directory as a move to another
directory (NOTE_WRITE | NOTE_EXTEND instead of NOTE_WRITE), which made
guest_kqueue abort on loaded runners.
The watcher now reads the queue until it is empty and, when a move half
has no partner, calls getdents64 on the directory before reading again:
that takes the directory lock rename holds until both halves are queued.
The libc.prx heap that Animal Well (PPSA22520 01.000.011, SDK 9.04)
bundles maps each arena with sceKernelMapFlexibleMemory(&addr, len, 3,
0x8000). It threw "Unsupported memory mapping flags 0x8000" before the
first frame. The flag is ignored as sceKernelMapNamedFlexibleMemoryInternal
already does; other unknown flags still throw.
Return the event's data when EV_ERROR is set in its flags and 0 otherwise, as KytyPS5 does and as FreeBSD 11 kevent stores the errno of a failed change. A null event throws like the other accessors.
Porpoise 2.7 (PPSA99764) stops at load on main 0f863c10:
FAIL: unresolved ELF import oc98+zOImus from libkernel_sys.prx
oc98+zOImus is pathconf (tools/nid_names.py, aerolib.csv at
zecoxao/sce_symbols 2883963a). It is exported from libkernel_sys next to
link and readlink.
The lookup follows FreeBSD 11's kern_pathconf and namei (release/11.0.0,
671fb7df): links are followed, a path of 1024 bytes or more or a
component over 255 fails with ENAMETOOLONG, a missing path with ENOENT.
The values are the constants of FreeBSD 11's UFS ufs_pathconf, which
vop_stdpathconf shares where both answer. Names whose UFS value depends
on the mount, the kernel options or the page size, or on which UFS and
vop_stdpathconf disagree, throw; other names fail with EINVAL. The
console's filesystem values are unverified and recorded in
TechnicalDebt.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
PPSA30601 (Resonance) stops at the throwing stub. The four int* arguments follow
OpenOrbis' libkernel.h, the Orbital type database and SharpProspero; the values
follow KytyPS5 (2048 entries of 2 MiB per side) without its accounting of used
entries, listed in TechnicalDebt.md. A null pointer returns EFAULT.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
There is no PSN sign-in, so the code getter answers SCE_NP_ERROR_SIGNED_OUT
instead of throwing; its parameters are unknown and not read. Minecraft
(PPSA17221) calls it after its sign-in dialog and treats the result as
offline play. The request, token and wait calls are left to #3604.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
ProsperoTV (PPSA99003) stops after its menu opens because poll threw for
the read end of a pipe it polls next to its sockets. poll now reports pipe
readiness as FreeBSD's pipe_poll does: readable when data is buffered,
POLLHUP once the other end is closed, writable when PIPE_BUF bytes are
free. On Windows the pipe is checked with NtQueryInformationFile while the
sockets are waited on in 1 ms slices; on Linux the host poll waits on both.
A closed descriptor below the socket range reports POLLNVAL.
Before: raise, kill and pthread_kill delivered a signal at once or failed
with EINVAL, nothing stayed pending, and pause, sigwait, sigwaitinfo and
sigtimedwait called NotImplemented_nid_no_patch.
Now: a process-wide pending set holds signals 1 to 128. A signal raised
while it is blocked stays pending and is delivered when _sigprocmask
unblocks it, taken by sigwait, sigwaitinfo or sigtimedwait, or delivered by
pause, which runs its handler on the calling thread and returns -1 with
EINTR. pthread_kill to another thread leaves the signal pending for
whichever thread waits for it and answers ESRCH for a handle that is not a
live guest thread. sigtimedwait follows FreeBSD's sigtimedwait(2): EAGAIN
on timeout, EINVAL for a tv_nsec outside 0 to 1000000000 while nothing is
pending, and an indefinite wait with a null timeout.
On an RTX 3060 (Windows, driver 591.86) a dispatch never finishes when
the lanes of read_bda_span split between its in-place dword loads and
its per-dword byte fallback, which calls read_bda_dword_bytes: Windows
resets the GPU and the device is lost. The two were the arms of one
selection in the DontInline function. They are now two selections, the
loads under the span's condition and the fallback under its negation,
joined after both. Loads, lookups, faults and stops are unchanged for
every lane; only the SPIR-V control-flow shape changes (SPIR-V
specification 2.11, structured control flow). Every stage except mesh
shaders is emitted as SPIR-V 1.3, and OpSelect chooses between
composites with a scalar condition only from 1.4 on, so the join stays
a selection.
The same hang and fix were reported in #3291 on an RTX 4060 Laptop GPU
(Windows, driver 591.86) and an RTX 5060 (Linux, driver 590.48.01). An
RTX 4070 Laptop GPU on driver 616.92 does not hang with either shape.
The driver-side cause is unknown, so the shape is recorded in
docs/dev/debt/shader.md.
On main the hang fails nine tests on the RTX 3060, in two ways.
agc_driver_{flat,global}_loads{,_x2_x3,_x4} and
agc_driver_flat_apertures_{2,5} abort after 64 to 71 s: the lost batch
keeps its lease, so teardown waits 60 s for the pinned guest allocation.
agc_driver_pixel_interlock fails after about 4 to 7 s with
vkDeviceWaitIdle returning VK_ERROR_DEVICE_LOST (-4) and never reaches
the pin wait. All nine pass with the change.
Fixes#3291
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
FreeBSD's vfs_kqfilter checks neither the vnode type nor fflags, so the
registration is valid; it is only delivered for a move between directories,
which the Windows directory handle cannot tell from a removal plus an addition.
Also moves the TechnicalDebt entries to docs/dev/debt after main split the file.
Co-Authored-By: Claude <noreply@anthropic.com>
The trace gets a gpu track: one slice per recorder batch from its timestamp
pair, and with APS5_PROFILE_GPU=1 one per command class range under the
[gputime] class names. The GPU clock is mapped onto the CPU clock from
calibrated timestamps (VK_KHR_calibrated_timestamps or the EXT version,
enabled only when a trace switch is set) taken when the window opens and
when it closes. A traced thread's wait for the GPU mutex becomes a
GpuMutex.wait.<site> slice, and the shader preparation threads are traced
with smaller buffers.
Co-Authored-By: Claude Opus 5.5 <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>
UFC 6 (PPSA23566) imports sceNetResolverAbort (#992, #1502); Palworld
(PPSA23126) and LEGO Horizon Adventures (PPSA14632) import
sceNetResolverStartNtoaMultipleRecords.
Signatures and behaviour follow shadPS4 811bfcd7d17e
(src/core/libraries/net/net.cpp, net_resolver.cpp); the abort signature
also matches SharpProspero Interop/Net/Socket.cs.
sceNetResolverStartNtoaMultipleRecords shares the lookup of the Ex form
and, like it, throws for any flag. sceNetResolverAbort returns EBADF for
an unknown resolver and throws for flag bits other than NTOA (1) and
ATON (2) preservation. Host lookups cannot be interrupted, so an abort
during a running lookup makes it fail with EINTR when the host call
returns, without writing its output; with nothing running, the
preservation flags make the next lookup of that kind fail with EINTR.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
(cherry picked from commit bcc8be8a58aa6a9e6b7c288d8a90af6ed63837aa)
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>
PRAGMATA (PPSA02530) imports sceSharePlayProhibitController (NID
FzQS6DREDfk), which no library exports on main, so the load fails on the
unresolved import. It is one of the "six declared-only imports" of
xXPBSXx's branch in #3043 (comment 6107100345): "These only stop the
load failure; as described above, the title calls some of them later and
needs their real behavior."
sharpemu src/SharpEmu.Libs/Share/SharePlayExports.cs:9-31
(a2983692930564815a77f81e74c151268f5b935f, used as a source of facts)
takes one value, accepts 0 and 1 and returns 0. Nothing here would read
the setting, as no Share Play session or visitor controller exists, so
it is not stored. sharpemu rejects other values with its synthetic
0x80020003, not a Share Play code, so they throw, as
sceSharePlayInitialize does for its unknown error. Like the other exports
of the library it does not check initialization. The NID hashes from the
name and is in aerolib. Unverified points are in TechnicalDebt.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
PRAGMATA (PPSA02530) imports sceRazorCpuSync (NID Ax7NjOzctIM), which no
library exports on main, so the load fails on the unresolved import. The
title calls it after sceConvertKeycodeGetCharacter. From #3043 (comment
6106731532): "`sceRazorCpuSync`: answering 0 and doing nothing was
enough to carry on (the other `sceRazorCpu*` calls in `main` are no-ops
without a capture)."
SharpProspero src/SharpProspero/Interop/Debug/RazorCpu.cs:119-122
(5dfdb4b0b166e83dc9ae275001afb695f12c7174, GPL-3.0, used as a source of
facts) gives int sceRazorCpuSync(void), an unnamed frame-boundary event.
Without a capture there is no event to record, so it returns 0 and does
nothing, like the other sceRazorCpu markers here and the shadPS4 stub
(razor_cpu.cpp:143, 3a9f57265d28975658f1ca941daa5c879c7a74bd). The NID
hashes from the name and is in aerolib. Unverified points are in
TechnicalDebt.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
PRAGMATA (PPSA02530) calls it after sceRazorCpuSync and stops on main
with "sceNpEntitlementAccessGetGameTrialsFlag not implemented". From
called once; I logged four register values but cannot tell which are
arguments. Answering 0 without writing anything carried on." Killing
Floor 3 (PPSA08427) and RE4 also import it.
The title is reported as a full game, not a game trial: 0 is written to
the uint32_t output and 0 returned; a null pointer returns 0x817D0002.
Signature, value, one-word write and error follow sharpemu
src/SharpEmu.Libs/Np/NpEntitlementAccessExports.cs:98-116 and its test
NpEntitlementAccessExportsTests.cs:16-36 (a2983692930564815a77f81e74c151268f5b935f),
used as a source of facts; 0x817D0002 is also the parameter error of
KytyPS5, prosper and sceNpEntitlementAccessGetEntitlementKey here. The
library has no initialization state, so none is checked. The NID
y7JD1gfwyfA hashes from the name and is in aerolib. Unverified points
are in TechnicalDebt.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
APS5_ENABLE_TRACY=ON builds the Tracy 0.14.1 client from the new
3rdparty/tracy submodule as a shared library next to the patched
libraries. Every PerformanceTimer scope of libSceAgcDriver and
libSceVideoOut becomes a Tracy zone, each presented flip ends a frame,
and the queue workers and the presenter name their threads. The client
listens only on localhost and records only while a profiler is
connected; sampling, system tracing, call stacks, code transfer and its
crash handler are off. Without the option nothing of Tracy is compiled.
On MinGW the client is built without thread_local destructors and with
TRACY_DELAYED_INIT, because emulated TLS frees thread_local objects
before their destructors run; a thread's event producer then stays
alive until the process exits instead of being destroyed on freed
memory.
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>
A hull program may read its input control points from LDS at an index it
computes from data, such as an index loaded from memory or min(invocation, n).
The tessellation lowering refused such a read because its address is not
affine in the invocation and relative patch.
The address evaluator now carries a dynamic term for a hull LDS read: a value
that is not affine but does not depend on the relative patch index, with the
multiple it is scaled by. Terms of the same value add up ((t << 1) + t of
t = index << 3 is 24 * index); terms of different values keep the greatest
common divisor of their multiples. The read is lowered from the program's own
address arithmetic, and the relative index may reach it only with the stride
of a patch's inputs. A computed offset that is not a whole number of control
points is refused.
The SPIR-V emitter clamps a hull input control-point index to the patch's last
input, recorded as technical debt: on the console an index past the patch
reads LDS of a neighbouring patch.
Require the measured separator after RFC date minutes when seconds are absent. Preserve the destination tick on the parse failure and retain the accepted trailing-space and seconds controls.
AI-assisted; based on guarded PS5 measurements with controlled input backing storage.
APS5_TRACE_FRAMES=<start>:<count> (or APS5_TRACE_SECONDS=<start>:<length>)
records every PerformanceTimer scope and stage of the queue workers and the
presenter inside the window as complete events, named after their frame
timing keys, into a preallocated buffer per thread. Slices under 20 us are
counted per thread instead of written; a full buffer stops that thread and
sets trace_dropped. When the window closes, a ProfileOutput writer thread
writes aps5-trace-<commit>-<pid>.json.gz and appends one line to
aps5-summary.jsonl. Without either switch a PerformanceTimer costs one more
predictable branch.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Map SW_64KB_D_X color surfaces through the existing source-backed texture equations and mip geometry. Keep display and render-target equation caches separate. Reject unresolved raw column bits for the new mode instead of accepting them.
Cover the captured PPSA99902 descriptor, independent source offsets, pipe/bank tags, transfers, array/mip placement and resident/non-resident GPU draws. Record unmeasured console behavior in TechnicalDebt.
CPU validation on main e013f8c9: captured-descriptor failure 5/5; changed passes 5/5; pinned AMD addrlib reference 536940 addresses per run, five runs. Full build and GPU validation are tracked externally. AI-assisted implementation and validation: Codex.
connect() on a guest datagram socket checked the address family before
doing anything, so an AF_UNSPEC (null) address failed with EAFNOSUPPORT
and left the socket connected: getpeername() still reported the old
peer, send() without an address still went there, and datagrams from
any other sender were dropped by the host.
FreeBSD 11.4 disconnects a connected datagram socket first and only then
rejects the address. sys/kern/uipc_socket.c, soconnectat():
* If protocol is connection-based, can only connect once.
* Otherwise, if connected, try to disconnect first. This allows
* user to disconnect by connecting to, e.g., a null address.
*/
if (so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING) &&
((so->so_proto->pr_flags & PR_CONNREQUIRED) ||
(error = sodisconnect(so)))) {
udp_disconnect() (sys/netinet/udp_usrreq.c) clears the peer and resets
only the local address, keeping the local port:
in_pcbdisconnect(inp);
inp->inp_laddr.s_addr = INADDR_ANY;
after which in_pcbconnect_setup() (sys/netinet/in_pcb.c) returns
EAFNOSUPPORT for the full-size address, as main already does. connect(2)
documents it: "Datagram sockets may dissolve the association by
connecting to an invalid address, such as a null address."
A connected internet datagram socket given an address whose family byte
is 0 is now disconnected on the host first (AF_UNSPEC on Linux, a zeroed
address on Windows) and the call then fails as before. Linux also drops
an ephemeral local port on that disconnect, so the port is bound again
on the wildcard address, which is what FreeBSD leaves. A host
failure during the disconnect is returned as the call's error. Stream
sockets keep the previous path.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
PPSA29866 (Tomba! 2) fails to load without these imports that no library exports. Their signatures are unknown, so they are declared without parameters and throw until they are implemented. Adds a TechnicalDebt entry.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
tools/progress_history.py measures the first-parent history of main with
the rules of tools/progress.py, one point per day, and writes history.json,
history.svg and history.html. The Progress workflow runs it after
progress.py; the README shows the chart under the map and links the page.
Labels and points compact as days accumulate.
Co-Authored-By: Claude <noreply@anthropic.com>
APS5_SAMPLE_WORKER=<file> now also writes <file stem>.collapsed.txt: one
"frame;...;frame count" line per distinct stack of queue worker 0, root
first, frames as module+0xRVA, which speedscope.app and flamegraph.pl
open. Walks go up to 64 frames, and nothing allocates while the worker is
suspended.
The libraries are built with -fno-asynchronous-unwind-tables, so most of
their functions have no .pdata entry, only a DWARF record in .ehfram, and a
walk ended at the first such frame. The worker's walk now steps those
frames through their record, with the CIE/FDE decoding and the call frame
instructions of libc's unwinder, which move from Unwind.cpp into its
header unchanged. A module is indexed after the worker resumes, the first
time a walk meets it, and every register the step restores is read inside
the worker's stack. The process sampler (APS5_SAMPLE_THREADS) keeps its 12
frames through .pdata.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
sceAgcDcbSetWorkloadStreamInactive and the three ACB workload builders
(sceAgcAcbSetWorkloadsActive, sceAgcAcbSetWorkloadComplete,
sceAgcAcbSetWorkloadStreamInactive) threw for every call, and
sceAgcDcbSetWorkloadsActive read the workload ids before it checked the
stream.
The prosper console oracle (mattias800/prosper df074498,
prosper/tests/data/console_oracle/agcbuild.golden.tsv lines 48-56 and
196-204) measured all six calls on a PS5 with three argument patterns
and no workload stream registered: each returned null and wrote nothing.
Pattern b passes stream 1 with the workload ids at address 2, so the
console checks the stream before it reads the ids; here that call read
address 2 and crashed.
The four builders now return null for a null command buffer or a stream
that is not registered, and still throw for a registered stream: the
packet a registered stream gets is not measured, KytyPS5 has no body for
them, and its IT_NOP layout for the DCB calls differs from the
SET_UCONFIG_REG, WRITE_DATA and SET_WORKLOAD sequence OpenAGC
(3c7e8072, src/agc_workload_packet.c) derives from the driver. The
signatures are OpenAGC's DCB ones (src/game_compat.c), which says the
ACB calls use the same driver builders. sceAgcDcbSetWorkloadsActive now
checks the stream before the ids, as OpenAGC does. Recorded in
docs/dev/debt/libSceAgc.md.
agc_commands gains testWorkloadStreams: the three measured patterns for
all six calls (null, buffer untouched), an exhausted and a null buffer,
and a registered stream that throws without touching the buffer. On
upstream/main it fails with "sceAgcDcbSetWorkloadStreamInactive not
implemented", and the DCB active pattern b alone segfaults reading
0x2.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A host import that leaves its range watched can resolve the write
protection of the imported pages without storing anything, as NVIDIA's
Linux driver does for every page. ImportWatched stamped those pages as a
possible CPU store (BlockMaybeWritten), and only a storage image tracked
by 64 KiB unit could clear the stamp, by comparing with a copy of the
guest bytes it was uploaded from. Since #3372 a fast-cleared upload
therefore reads its whole surface from guest memory wherever such an
import is possible, although nothing but that compare uses the copy.
ImportWatched now takes whether the import leaves its range watched. If
it does, the range is copied before the stores made so far are
collected, and after the import each page whose write protection was
resolved is compared with that copy. A page with other bytes is stamped
as a CPU store. A page with the same bytes keeps only the CPU-side stamp
the label rules read, so UnchangedSince holds for it for every consumer:
storage images tracked by layer, snapshots and caches as well.
If it does not (a host-pointer import on a device whose imports are
compared, a direct import on Windows), nothing is copied or compared:
the pages resolved in the window get the CPU-side stamp and the range
leaves the watch before the tracker is unlocked. Where host-pointer and
dma-buf imports differ in this, the dma-buf import that follows a failed
host-pointer import is a window of its own, so each window knows its
kind before it starts.
BlockMaybeWritten, the written-stamp table, WatchedImportsStampPages and
the unit compare in StorageTexture::Refresh are gone. The fast-clear
upload skips the guest-byte copy whenever its range is watched, as
before #3372.
Cult of the Lamb (PPSA06465) imports libSceContentSearch, including
sceContentSearchGetContentLastUpdateId, OpenMetadataByContentId,
GetTotalContentSize and GetNumOfContent (import audit in #2686), which
were declared without parameters and threw.
Give the nine pending calls the signatures of AlexAltea/orbital
db_types.json (cc408367, lines 555-569) and SharpProspero
Interop/Content/ContentSearch.cs (5dfdb4b0), and implement the content
library the host has, which is empty:
- GetNumOfContent, GetTotalContentSize and SearchContent report 0 rows
and 0 bytes, GetContentLastUpdateId and the search calls report update
id 0. A search limit above 92 returns 0x809D100A and every call before
Init returns 0x809D1001, both from SharpProspero.
- Filters and sort conditions use SharpProspero's layouts (added to
SceTypes.hpp with size checks) and are checked against its enums;
unknown values, null outputs and null arrays with a length throw.
- OpenMetadata and OpenMetadataByContentId throw, as no source gives the
error for content that is not in the library, so no metadata id is
handed out and CloseMetadata, GetMetadataFieldInfo and
GetMetadataValue throw too.
The update id value, the argument errors and the check order are
recorded in TechnicalDebt. The four ContentSearch calls leave the
unimplemented-imports test, and guest_content_search covers the library.
dup and dup2 carry the random device over to the new descriptor, and
select reports /dev/random and /dev/urandom ready, as the select entry
already says.
Co-Authored-By: Claude Opus 5.5 <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>
image_sample_c on an 8-bit UNORM T# returns 0 for every compare
function on gfx1035, as on 8-bit sRGB (measured on the hardware oracle
in the review of #3438), but the emulated comparison still compared the
red channel. 8, 8_8 and 8_8_8_8 UNORM now return 0 like 8-bit sRGB.
Every texel comparison of those formats is 0, so a bilinear cube
without DISABLE_CUBE_WRAP and an anisotropic S# cannot change the
result; both are accepted for them, as the cube already was for 8-bit
sRGB. Other formats keep both refusals.
The test rows that check real comparisons move to 16_16 UNORM.
collate<char>::do_transform gave the result std::string a capacity of
exactly its length and threw for results of 4095 characters or more.
The console's libc.prx grows the string from its inline capacity of 15
to length | 15, so a 26-character result has capacity 31 and a 32-byte
allocation. Once capacity + 1 reaches 0x1000 bytes it takes the
over-aligned large allocation that the guest's inlined deallocation
expects: operator new(bytes + 0x27), the data aligned to 32 bytes and
the raw pointer stored just before it. This is the scheme of
Dinkumware's basic_string (_Newsize | _ALLOC_MASK) and of its
_Allocate in <xmemory0> (_BIG_ALLOCATION_THRESHOLD 4096,
_BIG_ALLOCATION_ALIGNMENT 32, _NON_USER_SIZE sizeof(void*) + 31),
including its bad_alloc when bytes + 0x27 would wrap.
do_transform now uses that capacity and allocation; the throw for long
results is gone. The debt entry in docs/dev/debt/libc.md now records
the capacity and large storage as unverified on hardware. guest_collate
checks the capacity and allocation size of a 26-character result, the
last small result (4079 characters, a 4080-byte block) and the first
large one (4080 characters, capacity 4095, a 4096 + 0x27-byte block
with the data aligned to 32 and the raw pointer before it). With main's
LocaleSupport.cpp it aborts at the allocation-size check of the
26-character result (lastSize 27 instead of 32).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Follow FreeBSD sys_setregid and root identity model: accept real and effective group id 0 or -1 (unchanged) and change nothing; any other id throws. Update GuestCredentials test and TechnicalDebt.
Imported by the Share plugin of Hollow Knight: Silksong (PPSA12544).
Takes the extended parameter and request id like
sceShareCaptureScreenshotExtended, as KytyPS5 does: nothing is
captured, so it stores the invalid request id -1 when the pointer is
not null and returns NOT_SUPPORTED.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
(cherry picked from commit 245090904b64354f68fba3b8ef6fd6e232a3b1e6)
UFC 6 (PPSA23566) imports both. Initialization marks the library
initialized and termination clears it, as in shadPS4. Termination
without initialization and a second initialization throw, since no
PS5 source settles their results.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
(cherry picked from commit d2866a886a7702cdaad56d161460a3ce86ede629)
Throw a guest std::system_error for the Dinkumware _Cpp_error codes,
as in VC12 and microsoft/STL thread0.cpp: the error_code holds the
FreeBSD errno and a guest generic error category modelled in libc, and
what() is the table message followed by the category message. Codes
outside the table throw std::out_of_range. The system_error copy
constructor and assignment now copy the error_code too.
Imported by Deathloop (PPSA01670) and Minecraft Legends (PPSA05510).
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
(cherry picked from commit bed1deafdee4b50bea9683a1cead0d0320150eb7)
Export getopt (VUtibKJCt1o) and getopt_long (8VVXJxB5nlk) from
libSceLibcInternal together with the guest variables optind
(zCnSJWp-Qj8), optarg (zG0BNJOZdm4), opterr (yaFXXViLWPw), optopt
(FwzVaZ8Vnus) and optreset (CZNm+oNmB-I). The NIDs were computed with
tools/nid_names.py and all seven are in aerolib; the PS5 payload SDK
f5d40f02 lists the functions and the five objects in
sce_stubs/libSceLibcInternal.c.
Titles (predicted stops from registry order, not observed runs):
- XPSemu PPSA97358, after execv/execve, the signal waits, the
credential setters, mlockall and tcsendbreak:
"FAIL: unresolved ELF import VUtibKJCt1o from libSceLibcInternal.prx"
(getopt idx 204, 10 call sites from 0xF6C23D), then optind (207),
optreset (208), optarg (209).
- RetroArch PPSA99169: getopt_long (idx 554, call sites 0xD2FC0C,
0xD3002A), optind (553), optarg (555).
Behaviour follows FreeBSD release/11.4.0 8c639945: getopt is
lib/libc/stdlib/getopt.c (no permutation, GNU "::" optional argument,
lone "-" as an option when listed), getopt_long is getopt_internal
from lib/libc/stdlib/getopt_long.c with GNU_COMPATIBLE (permutation,
POSIXLY_CORRECT read through the guest getenv on the first call and on
optreset, "+" and "-" prefixes, "W;", optind 0 as a reset, abbreviation
and ambiguity rules and the GNU warning texts). Warnings are written to
the guest stderr stream as "<__progname>: <message>", as warnx does.
The struct option layout and argument kinds are include/getopt.h.
The code lives in libSceLibcInternal because __progname is a libkernel
export that libc cannot link.
A null getopt option string, a null argument vector or argument, a
negative optind and an optind moved inside a pending permutation throw
where FreeBSD faults. getopt_long_only is not exported.
guest_getopt runs the FreeBSD getopt_test cases (contrib/netbsd-tests
t_getopt.sh with the h_getopt and h_getopt_long result format) plus
grouped and optional arguments, "--", permutation order, "+" and "-"
prefixes, optreset and optind 0 restarts, POSIXLY_CORRECT, all three
long argument kinds, abbreviations, ambiguity, flag pointers, "W;",
optopt with opterr 0 and the exact stderr text.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
(cherry picked from commit a2740166d93920c301e1add23ceea762b4acad27)
Guest rwlocks were a host std::shared_timed_mutex. On Linux that is a
glibc rwlock, which prefers readers: a reader is let in while a writer
is blocked, so a writer waiting on a lock that readers keep taking in
overlapping turns never gets it (a probe with four readers each holding
the lock for 4 ms still had scePthreadRwlockWrlock waiting after 5 s,
with 4924 read acquisitions meanwhile), and tryrdlock succeeds while a
writer waits.
FreeBSD 11.4 libthr gives waiting writers precedence. A rwlock starts
without URWLOCK_PREFER_READER (rwlock_init() callocs it), and
lib/libthr/thread/thr_umtx.h, _thr_rwlock_tryrdlock(), refuses a reader
while a writer waits:
if ((flags & URWLOCK_PREFER_READER) != 0 ||
(rwlock->rw_flags & URWLOCK_PREFER_READER) != 0)
wrflags = URWLOCK_WRITE_OWNER;
else
wrflags = URWLOCK_WRITE_OWNER | URWLOCK_WRITE_WAITERS;
as does do_rw_rdlock() in sys/kern/kern_umtx.c for the blocking wait.
The only exception is a thread that already holds a read lock, so that a
recursive read cannot deadlock (lib/libthr/thread/thr_rwlock.c,
rwlock_rdlock_common()):
if (curthread->rdlock_count) {
...
flags = URWLOCK_PREFER_READER;
The rwlock is now a mutex and condition with a count of waiting writers:
a reader waits while a writer holds the lock or, unless the thread
already holds a read lock, while a writer waits; a timed writer that
gives up wakes the readers it held back. The TechnicalDebt note about
locking guest rwlocks once for winpthreads no longer applies to them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ProsperoRadio (PPSA99001) stops at 33.7 s on Windows, with #3649
applied so that it gets past poll, on the throw from #3840:
what(): fcntl: record locks are not implemented on Windows, command=12, fd=3
F_GETLK, F_SETLK, F_SETLKW and the F_OGETLK, F_OSETLK and F_OSETLKW
forms now follow FreeBSD 11.4's kern_fcntl and lf_advlockasync
(8c639945): an SEEK_CUR start is resolved against the descriptor offset
(EOVERFLOW past OFF_MAX), F_RDLCK needs read access and F_WRLCK write
access (EBADF), another type is EINVAL, and the range is checked against
the file size for SEEK_END (EINVAL for a negative start or an unknown
whence, EOVERFLOW past OFF_MAX). The guest is one process, and
lf_blocks never lets locks of one owner conflict, so whichever
descriptor or thread asks, F_SETLK and F_SETLKW succeed without waiting
and F_GETLK reports F_UNLCK, as on the console. Nothing is held on the
host: Windows byte-range locks are mandatory and would fail the guest's
own reads and writes through other descriptors. A lock from the end of
a directory throws.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
C17 7.22.1.3 and 7.29.4.1.1 interpret NAN(n-char-sequence) as a quiet
NaN. With MinGW-w64, std::strtod, strtof and strtold are mingw-w64's
gdtoa functions, which copy the hex digits into the significand
without the quiet bit, and for long double without the x87 integer
bit: strtod("nan(0x123)") returned the signaling NaN
0x7ff0000000000123 and strtold a pseudo-NaN. A payload whose only set
bit is the implicit or x87 integer bit gave infinity:
strtof("nan(0x800000)"), strtod("nan(0x10000000000000)") and
strtold("nan(0x8000000000000000)") returned +inf. glibc returns quiet
NaNs that keep the payload.
C17 7.12.11.2p2 makes nan("n-char-sequence") equivalent to
strtod("NAN(n-char-sequence)", NULL), and nan and nanf already return
the console's fixed quiet NaNs, ignoring the tag. ParseFloat, which
strtod, strtof, strtold, atof and the wide variants share, now returns
the same values, 0x7ff8000000000000 and 0x7fc00000, negated after a
minus sign, on Windows and Linux. strtold returns the x87 default
quiet NaN, since no console nanl was observed.
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>
qsort was a heapsort. It sorted correctly, but elements that compare
equal ended in a different order from FreeBSD's Bentley-McIlroy qsort,
in 18947 of 20000 random arrays with repeated keys, and below 7
elements, where FreeBSD's insertion sort keeps equal elements in
place, a heapsort does not. qsort now follows FreeBSD 11 qsort.c,
including its comparator call sequence.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VZWLdTjf1S57iLgn2rcaFb
PS4 executables keep their relocated read-only data, GOT and init/fini
arrays in a PT_SCE_RELRO segment outside every PT_LOAD. The segment filter
dropped it, so Windows and macOS output stopped at the first relocation
into it, and Linux output placed the relinker's extra block over its
addresses without an error. The ELF reader now reports such a segment as a
read-write PT_LOAD. A PT_SCE_RELRO inside a PT_LOAD keeps being skipped,
and one that partially overlaps a PT_LOAD throws.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The Windows unwinder stopped at the first frame of a module without the
project's .ehmeta or .ehfram tables, so an exception could not cross
libstdc++-6.dll and libwinpthread-1.dll (std::call_once through
pthread_once) or system DLLs. For such a frame it now looks up the
function's PE unwind data with RtlLookupFunctionEntry and takes the
caller's registers, including the nonvolatile rsi, rdi and xmm6-xmm15,
from RtlVirtualUnwind. A frame whose unwind data has an exception or
termination handler still stops the walk, since those handlers are not
run.
windows_exceptions gets back the std::call_once case of #1423.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
sceSaveDataDirNameSearch reads % in the directory name pattern as any
run of characters and _ as one character. The matcher stopped when the
name ran out and then required the pattern to have ended too, so a
trailing % with nothing left to match failed: SAVEDATA% did not find a
save named SAVEDATA, and TRAI_% did not find TRAIL. A % now matches no
characters at the end of a name as it already did in the middle.
lavapipe and MoltenVK leave the vertex stage out of subgroupSupportedStages,
so the driver's shader validation refuses every vertex program that declares
GroupNonUniform ("subgroup capability 61 is unsupported for shader stage 1").
Most do, since the entry EXEC is a ballot.
The device target now records whether the vertex stage has subgroups. When
it does not, vertex and local programs get a host subgroup width of 1: s3
reports one vertex and one primitive, the lane id is 0, a ballot is the
invocation's own bit, a shuffle returns the invocation's value, an elect is
true and a half-wave reduction read is the key itself. Reads of other lanes
keep the existing narrow-host rules and throw where they did. Devices with
vertex subgroups emit the same SPIR-V as before.
The memo stamp held TrackerGeneration, which every collect and driver store
advances, so it almost never matched. Driver stores into uncovered ranges
record their generation per 64 KiB block, and NewestStamp of the surface
replaces TrackerGeneration in the stamp.
Kart PS5 (PPSA99611, Phi1ow/mkwii-ps5 v1.0.0-rc1) stops on it right
after __divti3. The related open PR #4037 reports: "with this change it
passes `__divti3` and stops at `ELSr5qm4K1M` (`__umodti3`)".
PS5CEMU-HAR (PPSA99360) imports it too: tools/import_audit.py lists
ELSr5qm4K1M __umodti3 as absent from libSceLibcInternal.prx (registry
index 359), so the predicted stop is
"FAIL: unresolved ELF import ELSr5qm4K1M from libSceLibcInternal.prx".
libSceLibcInternal imports fall back to libc.prx, so the export lives in
libc beside __udivti3. compute_nid and aerolib (zecoxao/sce_symbols
2883963a) both give ELSr5qm4K1M = __umodti3.
__umodti3 is compiler-rt's lib/builtins/umodti3.c (llvm-project
0ee439b705e82a4fe20e266bc8fea96d0e60e1ec): the remainder that
__udivmodti4 leaves. The restoring division of SonyUdivti3 already
computes it, so the loop moves to SonyUdivmod128 and both helpers use
it. A zero divisor reaches a 64-bit divide in __udivmodti4 and traps on
x86-64; this throws instead, as __udivti3 does, and names the dividend.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
A relocation whose dynamic symbol entry is all zero, like the null symbol,
now takes the value 0 plus its addend, as the gABI defines for STN_UNDEF.
The Linux output imports such an entry as an unnamed weak symbol, which the
host loader resolves to 0. The Windows and macOS outputs write the value
into the slot instead of failing with "Empty import symbol name". Such
references are left out of the call registry. An unnamed symbol entry that
is not all zero still fails the relink.
OliSe Player (PPSA01153) has seven of these entries and calls through the
slots only when they are not 0 (#4437).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Implement sceNgs2GeomResetListenerParam and sceNgs2GeomResetSourceParam,
taken from #1021 and limited to the two reset functions. The Geom
structures get their real layouts. sceNgs2GeomCalcListener and
sceNgs2GeomApply stay unimplemented.
Co-Authored-By: Dextroid17 <217507631+Dextroid17@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
PPSA35943 (Graveyard Keeper 2) imports sceHttp2DeleteCookieBox, which no
library exported. On current main the loader stops the title there:
./eboot.elf: symbol lookup error: ./eboot.elf: undefined symbol:
O9ync3F-JVI
sceHttp2DeleteCookieBox(cookieBoxId) erases the box from the handle
registry sceHttp2CreateCookieBox adds it to and returns 0, or the
library's invalid-id error (0x817B1100) for an id that is not a live
cookie box. The signature follows SharpProspero and the behaviour
prosper's sceHttp2DeleteCookieBox; the error code is listed in
TechnicalDebt as not measured on a console.
guest_http2 deletes a box twice, a context id, a box whose context was
terminated, and the two boxes it uses before sceHttp2Term.
With this change the title loads and runs into its asset loading.
Minecraft (PPSA17221) fails to load on nine absent imports. The authorized-app
dialog runs the common-dialog state machine without UI and reports the user
as having cancelled, like the login and VR setup dialogs. The other two,
sceNpAuthGetAuthorizedAppCode and the unnamed libSceSaveData.native NID
RvID8BVeg+g, are declared as throwing stubs with unknown signatures.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
RetroArch 1.0.0-beta.1 (PPSA99169) stops on main 0f863c10 at
FAIL: unresolved ELF import Nx-F5v0-qU8 from libSceLibcInternal.prx
Nx-F5v0-qU8 is asinl (tools/nid_names.py, aerolib).
The implementation follows the asinl of the libc.prx bundled with
PPSA28319, read from its disassembly: FreeBSD msun's e_asinl.c with
the ld80 invtrig.c coefficients (9f043204), which the binary holds as
the same 80-bit constants, computed in the x87 long double the guest
uses. +-1 returns +-pi/2 rounded to 64 bits and +-0 keeps its sign.
For |x| > 1, the infinities and NaN, Sony's error helper raises
FE_INVALID and sets errno to EDOM before returning (x - x) / (x - x),
so a NaN argument sets EDOM too.
20 million random arguments in (-1, 1) plus the branch edges give the
same bits as that code from the title's libc.prx run on a Windows
host. guest_math pins a set of those bits and checks the domain
errors' errno and FE_INVALID, and that errno is untouched otherwise.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Ruffle Flash 1.2.0 (PPSA68091) stops on main 0f863c10 at
FAIL: unresolved ELF import 1t1-JoZ0sZQ from libSceLibcInternal.prx
1t1-JoZ0sZQ is sinhf (tools/nid_names.py, aerolib). RetroArch
1.0.0-beta.1 (PPSA99169) imports it as well.
The implementation follows the sinhf of the libc.prx bundled with
PPSA28319, read from its disassembly: FreeBSD msun's e_sinhf.c as of
5aa554c7 (before __ldexp_expf, so expf(|x| / 2) is squared between
logf(FLT_MAX) and the overflow threshold), calling msun stable/9
expm1f and expf (59bc2f09), whose paths for the arguments sinhf passes
are inlined. Past the threshold Sony's error helper sets errno to
ERANGE before returning x * 1e37; NaN and the infinities return x + x
and leave errno alone.
Running that code from the title's libc.prx on a Windows host gives
the same bits as this implementation for every finite argument up to
the threshold, both signs (2,238,032,378 inputs). guest_math pins a
set of those bits, the overflow errno and FE_OVERFLOW, and checks that
errno is untouched otherwise.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
On Linux sscanf, vsscanf, fscanf and sscanf_s hand their conversions to
glibc. Since glibc 2.38, code built as GNU C++ calls the C23 entry
points (__isoc23_vsscanf, __isoc23_vfscanf, __isoc23_sscanf), whose %i
reads a 0b/0B binary prefix. On main,
sscanf("0b101 x", "%i%n%7s", &value, &end, rest) stores value 5 and
end 5 and leaves "x" for the %s; " -0B11" gives -3. TechnicalDebt
records this.
FreeBSD's %i knows only the 0 and 0x prefixes. FreeBSD 11.4
lib/libc/stdio/vfscanf.c, parseint, lines 345-353 and 371-380:
case '0':
if (base == 0) {
base = 8;
flags |= PFXOK;
}
...
/* letters ok iff hex */
case 'A': case 'B': case 'C':
case 'D': case 'E': case 'F':
case 'a': case 'b': case 'c':
case 'd': case 'e': case 'f':
/* no need to fix base here */
if (base <= 10)
break; /* not legal here */
so "0b101" stores 0, consumes the "0" and leaves "b101", as C17 does
and as the strtol family here already does.
With glibc the scanf family now calls __isoc99_vsscanf and
__isoc99_vfscanf, the entry points GNU C++ used before glibc 2.38
(exported since 2.7), which read %i without the binary prefix. Other
hosts keep std::vsscanf and std::vfscanf. The TechnicalDebt entry is
removed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
MaskedSelectEliminator walked forward from each select to see whether the
lanes its mask excludes are read. Since fda4aa90 the walks pass explicit-LOD
gathers, size queries and guarded image writes, so in a large pixel shader
most of them cover the rest of the program, and the cost grows with the
square of its size (#3504).
The pass now computes, for every value, the set of masks under which it is
unread, from its uses backwards: a use guarded by a condition contributes the
masks that condition implies, a lane-local use adds what its result is unread
under, and any other use contributes nothing. A select is dropped when its
mask is in its own set. Loops are solved as strongly connected components.
The rules for guards, lane-local uses, loops, whole quad masks, selected
execs, rebuilt mask words and guarded first-lane reads are the ones the walk
applied. A first-lane read passes the masks its read mask implies when its
own result is unread outside that read mask, which is solved once per read in
the same way. The walk's step limit, its 64-level implication depth and its
first-lane nesting depth are gone, so a proof no longer depends on the order
of the questions.
Goat Simulator 3 draws a triangle list whose indices are all 0xffffffff
with primitive restart off. Each fetch past a descriptor's records reads
zeros (out-of-bounds select 0 or 1), but the zero-padded vertex copies
were sized to the highest index: 160 GiB, which vkAllocateMemory refused.
When the highest index is at least 64Ki vertices past the largest
per-vertex record count, the draw now uses a copy of its indices with
every index past that count moved to it. Each attribute reads zeros
there as at the original index; only the vertex index the shader sees
changes, so indices closer to the records are left as they are.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ioctl and _ioctl answered EBADF for every descriptor outside the
libSceNet socket table. Decoded call sites: PS5MC (PPSA99420, FIONBIO x3,
FIONREAD x2, TIOCGWINSZ x3), ProsperoTV (PPSA99003, FIONBIO on a pipe
once poll on pipes is in), XPSemu (PPSA97358, 21 sites).
Following FreeBSD 11.4 kern_ioctl (sys/kern/sys_generic.c:758),
vn_ioctl (sys/kern/vfs_vnops.c:1488), pipe_ioctl (sys/kern/sys_pipe.c:1346)
and randomdev_ioctl (sys/dev/random/randomdev.c:301), release/11.4.0
8c639945: FIONBIO sets or clears O_NONBLOCK through the same status
flags as fcntl F_SETFL (EFAULT for a null argument before EBADF);
FIONREAD reports the size past the offset of a file, the queued bytes of
a pipe's read end, 0 on its write end, ENOTTY on the random device, and
throws on a directory or another character device; termios requests
(group 't', TIOCGWINSZ included) fail with ENOTTY, as tcgetattr already
takes these descriptors as not a terminal; any other request throws
naming the request and descriptor kind. Sockets keep their path
unchanged.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
fcntl and sceKernelFcntl answered EBADF (sceKernelFcntl threw) for
every descriptor outside the libSceNet socket table, so files, pipes,
directories and descriptors 0 to 2 could not be queried or changed.
Observed: Yamagi Quake II (PPSA99007) stops with
"Sys_Error: change stdin to blocking Bad file descriptor", from
fcntl(fileno(stdin), F_SETFL, fcntl(0, F_GETFL, 0) & ~FNDELAY)
(yquake2 src/backends/unix/system.c:81-86).
Predicted from the titles' sources and decoded call sites: XPSemu
(PPSA97358, 97 fcntl sites: F_GETFD 12, F_SETFD 20, F_GETFL 8,
F_SETFL 9, F_DUPFD 1, F_DUPFD_CLOEXEC 7, F_GETLK 9) fails in
qemu_init_main_loop, where its pipe2 (pipe plus F_SETFD FD_CLOEXEC) and
glib's g_unix_set_fd_nonblocking (F_GETFL, F_SETFL) build the event
notifier (util/event_notifier-posix.c:44-67); VLC (PPSA85300, 43 sites,
F_RDAHEAD on every file it opens), RetroArch (PPSA99169, 17),
Porpoise (PPSA99764, 13) and Ruffle (9) call it on files and pipes.
The commands follow FreeBSD 11.4 kern_fcntl and kern_dup
(sys/kern/kern_descrip.c:479-799, 812, release/11.4.0 8c639945):
F_GETFD/F_SETFD keep the close-on-exec flag per descriptor, F_GETFL
reports the host access mode with the status flags, F_SETFL changes
only O_NONBLOCK, O_APPEND, O_ASYNC, O_FSYNC, O_DIRECT and FRDAHEAD,
F_DUPFD/F_DUPFD_CLOEXEC give the lowest free descriptor at or above the
start through dup (EINVAL for a negative start), F_DUP2FD goes through
dup2, F_RDAHEAD/F_READAHEAD set FRDAHEAD on files (EBADF on pipes,
ENOTTY elsewhere), and unknown commands fail with EINVAL. Status flags
live in a guest table shared by dup, dup2 and F_DUPFD like an open file
description. O_NONBLOCK switches a pipe (PIPE_NOWAIT on Windows, where an
empty read and a full write now report EAGAIN; the host flag on Linux).
Record locks use the host POSIX locks on Linux and throw on Windows.
Changes the host cannot model throw naming the flag and descriptor kind.
Sockets keep their path unchanged.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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