drem, dremf, remainderl and remquol now set EDOM themselves for an
infinite x or a zero y, as fmodl does. Apple's libm never sets errno and
MinGW skips it for long double, so the host could not be relied on.
Guest long is 64 bits, but the host long is 32 bits on Windows. The
lrint, lround and scalbln exports now take and return std::int64_t,
round through llrint and llround, and clamp scalbln exponents to the int
range, where the result is already infinite or zero. The test uses
INT64_MAX instead of LONG_MAX and covers remainderl, dremf and a 2^40
lrint result.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
dl_iterate_phdr takes the loader lock. Calling it with the base cache
mutex held inverts the order against a thread inside dlopen whose
constructor throws and reaches FindFrameFast. Probe first, then lock
only for the lookup and the insert; racing misses compute the same
bases and emplace keeps the first.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
A shared mapping is a view of a file section created on the descriptor's
handle, read-write when the descriptor is, otherwise read-only. A private
mapping is a copy of the file read at mmap, as POSIX allows. Anonymous
shm_open objects and JIT shared memory descriptors are temporary files on
Windows, so mmap now maps them too (it failed with EOPNOTSUPP before).
mprotect of a mapped view above the view's protection fails with EACCES
before any bookkeeping changes. The cases Windows cannot represent are
listed in the libkernel debt.
Dusklight (PPSA99305) uses SQLite in WAL mode, which maps its -shm file.
On Windows main f0634088b every start logged "Failed to start
transaction: disk I/O error" for its Dawn and pipeline caches (3 of 3
runs); with this change the caches initialise and their WAL files fill
(4 of 4 runs). The title reaches its menu either way.
A shared mapping may end inside the 16 KiB page that holds the end of
the file, as POSIX mmap allows: the view ends with the file's last 4 KiB
host page, which Windows zero-fills past the end, the rest of the guest
page is private zero pages, and the file never grows. A mapping that
reaches a whole page past the end still fails with EOPNOTSUPP.
PS5LM Plus (PPSA99581) loads its model with llama.cpp, which maps the
whole GGUF file shared and read-only. With a 491,400,032-byte model,
Windows main 5de7a46e0 and this change without the last page logged
"llama_model_load: error loading model: mmap failed: Operation not
supported" (3 of 3 runs); now the model loads and the completion of
"The capital of France is" starts with " Paris" (3 of 3 runs).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The 1-, 2- and 8-byte loads, stores, exchanges, compare-exchanges and fetch
operations, _Atomic_is_lock_free_N, the flag and fence functions and the
lock-based generic _Atomic_copy, _Atomic_exchange and _Atomic_compare_exchange_*,
matching the libc.prx bundled with PPSA08427 including its handling of
invalid memory orders.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Q8tinbP1MUpUaDsbNWnGnu
fopen resolved the random device paths to a host file that does not
exist and failed with ENOENT, while open and sceKernelOpen already serve
them from host entropy. A read-only fopen of either path now returns a
stream whose fread fills the buffer with host entropy. setvbuf, feof,
ferror, clearerr, the stream locks and fclose work on it, fflush returns
0 as on a FreeBSD stream that is not writing, other stream functions
throw, and opening the paths for writing throws as in libkernel.
ProsperoTV (PPSA99003) reads its phone pairing code this way and showed
"Code expired or unavailable".
Co-Authored-By: Claude Opus 5.5 <[email protected]>
xxLnolan