FreeBSD 11's kern_pipe opens both ends with FREAD | FWRITE, so F_GETFL
reports O_RDWR on each. The host pipe ends are one-way, so the access
mode came back as O_RDONLY and O_WRONLY. Descriptors made by pipe() are
now marked in the guest descriptor table, the mark follows dup, dup2 and
F_DUPFD, and F_GETFL reports O_RDWR for them.
A guest wave's lanes see each other's LDS writes without a barrier, so
the recompiler adds a subgroup-scope OpControlBarrier between an LDS
write and the next LDS access when the guest wave is one host subgroup
(WaveLdsScope). AMD's proprietary Windows driver 32.0.21042.62 (Vulkan
driver 2.0.353, "AMD proprietary shader compiler", Radeon 0x13c0)
compiles that barrier to s_barrier, as the pipeline's internal ISA
shows (26 s_barrier for the guest's 9 in a small LDS reduction). In a
workgroup of several waves, the waves that enter a branch holding LDS
accesses then execute extra s_barriers, which pair with the other
waves' barriers, and those waves read LDS before it is written. LLPC
compiles a subgroup-scope control barrier to a wave barrier instead.
PS5LM Plus (PPSA99581) answered with garbage on that driver: the first
compute dispatch of its first graph, an RMS norm with a 512-thread
wave32 LDS tree reduction, scaled every row except its first 32
elements by a partial sum, while NVIDIA matched a NumPy reference and
the inputs were identical.
On that driver the barrier is now a subgroup-scope OpMemoryBarrier,
which it compiles to no instruction. A 32-lane subgroup is one hardware
wave there, which runs its lanes in lockstep and issues its LDS
instructions in order; Vulkan does not guarantee that, so it is
recorded as debt. Other drivers keep the control barrier. The flag is
part of the shader cache key, and agc_shader_replay takes
--wave-lds-memory-barriers to replay a request the way that driver
compiles it.
agc_driver_lds_tree_reduction sums over eight wave32 waves the way the
guest does, with its last four steps inside one wave and no s_barrier
between them: before, thread 32 read 1936 instead of 32896 on the AMD
driver; it passes on AMD and NVIDIA now. agc_subgroup_barrier checks
the driver quirk and the emitted barriers on every runner. PS5LM Plus
now answers " Paris. It is the largest city in Europe ..." on the AMD
iGPU without flash attention, as on NVIDIA and the CPU.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
lstat and readlink threw NotImplemented for every Windows reparse point
other than a symbolic link or a drive junction. A tag without the name
surrogate bit (cloud files, deduplication) does not stand for another path,
so lstat now answers as stat does and readlink returns EINVAL, as FreeBSD
does for a file that is not a link and as CPython's os.lstat and os.readlink
do (bpo-37834). A name surrogate that is neither a symbolic link nor a
junction (a mounted volume, a WSL link) is reported as the reparse point
itself with the mode of its attributes, and readlink returns EINVAL.
The tests set reparse tags with FSCTL_SET_REPARSE_POINT, one without the
name surrogate bit and one with it. A compact /exe (WOF) file cannot serve
as the fixture: on Windows 11 24H2 the WOF filter hides the reparse point
from GetFileAttributesW and FileAttributeTagInfo alike. Windows refuses
every open of an unhandled tag without FILE_FLAG_OPEN_REPARSE_POINT, so the
test requires lstat to agree with stat rather than to succeed.
mashingaan's boykopovar/AnyPS5#6447 returned EINVAL for other reparse
points without the tag check.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Co-Authored-By: Claude Fable 5.1 <[email protected]>
d3011ae11 made dup and dup2 of a Windows directory descriptor share
its DirectoryState, as FreeBSD's kern_dup shares the open file, and
removed the clause; a later merge of the entry brought it back.
GuestDirectoryRewind covers both calls.
When the graph is built without the wave size and the return address
escapes under only one of wave32 and wave64, the graph records that size
and its error instead of throwing, and translation throws it only at
that size. A wave64 program that reads a compare mask written over a
call's link pair from a scalar instruction is now recompiled, while the
same program at wave32, where the high dword still holds the return
address, is refused.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The raw-byte check that runs before a syscall pattern between PS4 unwind
functions is skipped now also accepts mov rax, imm64, merges a following
mov al, imm8 or mov ax, imm16 into the earlier constant, and walks back
over any number of register moves or zeroings that leave rax alone
instead of at most seven. Visited states keep the walk linear in the
bytes it covers.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Linux's udp_sendmsg refuses port 0 with EINVAL, so a send that FreeBSD
accepts (the socket is bound to a specific address and port and the
destination is not INADDR_ANY or INADDR_BROADCAST) failed there. Nothing can
receive on port 0, so the call now returns the length itself on every host.
Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
udp_output hands the destination to in_pcbconnect_setup unless the socket is
bound to a specific address and port and the destination is neither
INADDR_ANY nor INADDR_BROADCAST, and in_pcbconnect_setup fails port 0 with
EADDRNOTAVAIL. The send went to the host, which accepted it. sendto, and
sendmsg through it, now fails the same way for an AF_INET datagram socket
that is not connected. connect to port 0 already did.
Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
A voice callback runs during its system's render. A rack or system
destroyed from that callback was freed while the render still walked
it, which corrupted the heap. sceNgs2RackDestroy and
sceNgs2SystemDestroy now throw when the calling thread is rendering
that system; the console's behaviour there is not measured.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Import an eight-fragment DCC-cleared owner with disjoint watched metadata, capture its independent CB FMASK address and XOR, and expose expanded indices only for an exact matching native view. Reject standalone compressed reads, descriptor mismatches and metadata writes. Exercise direct/registered/prepared dispatches and invalidation with a cold GPU fixture.
Descriptor metadata normalization builds on Romans Pokrovskis and MarcZX100 work in #4790; standalone CPU decoding remains outside this change. Expanded indices follow AMD PAL c5e800072a32f68b6ccc4422936d96167c6e0728. Written with AI assistance.
Co-authored-by: MarcZX100 <[email protected]>
Say that 0x80bc0002 is this library's sceImeDialogTerm result rather
than a SharpProspero claim, and that the exports still throwing are
declared with shadPS4's parameters except sceImeDialogForTestFunction.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Arbzg9c2DA4DEFKVSvRgYv
A registered type-3 hull program holds the local and the hull part of a
tessellation draw in one binary, addressed through SPI_SHADER_PGM_LO_LS
(SH 0x148) with no SPI_SHADER_PGM_LO_HS: the local part runs on the lanes
below s3[7:0] and writes LDS, an s_barrier follows, and the hull part runs
on the lanes below s3[15:8] and may store the registers the local part
filled. The draw decode asked 0x148 for a type-5 local half, and
PPSA11386 (007 First Light) stopped in its level load with "registered
program refers to an incompatible shader binary type".
The draw decode now gives a registered type-3 program both the local and
the hull role and marks the tessellation configuration mergedHull. The
local stage only passes gl_VertexIndex and gl_InstanceIndex in a 16-byte
record. The hull stage runs the whole program, one invocation per output
control point: v2 and v5 come from the record of control point
min(gl_InvocationID, inputs - 1), v3 is the relative vertex id, and the
LDS becomes a per-control-point output array that a control point writes
in its own record and reads in any record of its patch after the barrier.
Registers live across the barrier stay in the invocation.
The hull stage of a merged program runs at one lane per invocation on
every device (HostSubgroupSize 1). Its lanes are gl_InvocationID, not host
subgroup invocations, so the s_cbranch_execz around the local part tests
the invocation's own lane. With the device's subgroup it took a subgroup
ballot, and lavapipe, whose subgroup stages lack the tessellation control
stage, rejected the draw ("subgroup capability 61 is unsupported for
shader stage 2").
The lowering refuses more input than output control points, LDS writes
outside the own record, reads outside the patch's records, barriers that
some invocations do not reach or that sit in a loop, reads or writes of
another lane's register, outputs beyond the device limits, and fetch
subroutines. Type 3 is prepared with its stage group like type 5 and
takes its float mode from RSRC1_HS. The hull user-data address (SH
0x102/0x103) is optional for a merged program: s[0:1] take it, unchecked,
when the draw sets it and are zero otherwise.
Both stages refer to one binary, so a draw lists each code and header
region once (AppendProgramMemory); a request's memory regions must not
overlap. An indirect draw's record words go into every program whose user
data holds the register, so the hull stage of a merged program reads
them too.
mergedHull is part of the recompile cache key, the draw decode comparison
and the request serialization (version 39).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Dean