strtof and wcstof now set ERANGE for a decimal input whose nonzero
subnormal result is inexact, never for a hexadecimal nonzero subnormal,
and keep it for underflow to zero and overflow. This is what the libc.prx
bundled with PPSA08427 (J03547016) and PPSA03671 (J03848509) do when run
side by side with this libc. The earlier commit followed
libSceLibcInternal's _Stof, which leaves errno alone for hexadecimal under-
and overflow, but titles import these NIDs from their own libc.prx.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01RbLgECLQ2bpDM7oe2urGZK
The trap checks unmask exceptions with feenableexcept and its relatives
and expect MXCSR to hold the new masks, and the enable and disable
results to report the traps enabled on both units. Under Rosetta 2
MXCSR keeps its six exception masks set, so no SSE trap is ever enabled
and every result reports none. The test now asks the host once whether
it keeps an unmasked MXCSR exception and, where it does not, expects
all six SSE masks set and no trap on both units; on other hosts the
expectations are the same as before. A debt entry records that the
trap functions change only the x87 masks under Rosetta.
Under Rosetta 2 the six MXCSR exception masks always read back set: a
write that unmasks an SSE exception is not kept, while the x87 masks and
the other MXCSR bits are. guest_floating_point unmasked the overflow
exception on both units and then expected MXCSR to equal the value it
wrote, so it failed on macOS although fesetexceptflag and feclearexcept
left the masks alone. The test now compares with the environment read
back after the write, which on other hosts is the value written. The
debt entry for the floating-point functions notes the Rosetta behaviour.
mazen320 mapped the relocated slots of KfcTPbeaOqg in the console's
libSceLibcInternal: offset-to-top, typeinfo, the two destructors,
locale::facet::_Incref and _Decref, and the eleven do_get. The debt
entry now says so instead of leaving the two extra entries unknown.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
mazen320 read KfcTPbeaOqg from the console's libSceLibcInternal.sprx
symbol table: an object of 136 bytes, 17 pointer slots. Export that
size instead of the 15 derived from Dinkumware's crt.vc12 xlocnum, and
say in the debt entry that which two virtual functions are added is
not known.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Resolves the conflict with #8867 in EntryStubTests.cpp: keep its two
kernel-variant tests and the BufferUtils include, and this branch's
libSceAmpr-to-libc fallback test, with all three called from main.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
A clean resident run was made read-only so that the next collect
could skip GetWriteWatch, and the first guest store into it was
resumed on the guest thread. The exception frame Windows builds for
that fault overwrites the System V red zone below rsp (#361), which
is what #5596 removed for singly mapped direct memory. Resident runs
are now never armed and are collected with GetWriteWatch only.
Refs #9136
Co-Authored-By: Claude Opus 5.5 <[email protected]>
FreeBSD 11 localtime.c initializes tzname to WILDABBR (" ") and settzname()
resets both entries to it before filling them from the zone's types, so a
zone with no daylight saving type keeps " " in tzname[1]. Windows left it
empty and Linux repeated tzname[0].
FreeBSD 11 fopen opens the path with _open, and vn_open_vnode refuses a
directory only for FWRITE or O_TRUNC, so fopen of a directory in a read
mode succeeds; Linux hosts already open it. On Windows CreateFileW
without FILE_FLAG_BACKUP_SEMANTICS refused it with EACCES.
fopen now opens such a path as a libkernel directory descriptor, which
libkernel registers in libc when it loads, and fclose and freopen remove
it from libkernel's table. Reads on the stream fail with EISDIR and set
the error indicator, as on a Linux host and FreeBSD's tmpfs: the Windows
CRT fails them already but reports EINVAL. Writes fail with EBADF, and
fseek, ftell and ungetc work, as on any read-only stream.
The libSceLibcInternal of a payload process on a PS5 (firmware 12.70) seeds
the additive feedback generator with a good_rand that reads its argument as an
int32, turns 0 into 123459876 and applies x = 16807 * (x % 127773) - 2836 * (x / 127773),
adding 0x7fffffff to a negative result. Its default state is the state after
srandom(1), not a precomputed table.
Replace the good_rand, build the default state by seeding it with 1 and add a
guest test that pins the first values of a fresh process, the values after each
measured seed and the saved state words of every measured initstate size.
The public SDK's libSceLibcInternal table declares num_get<char>::id, time_get<char>::id and the
num_get<char> vtable as objects; libSceAmpr exported their NIDs as functions that throw, which a
data consumer reads as code (#8875). libc now defines them the way the other facet ids and the
num_put and codecvt vtables are kept: the ids zero, the vtable 15 zeroed slots (two header
entries, the two destructor entries and Dinkumware's eleven do_get), and libSceAmpr drops the
functions. An import qualified to libSceAmpr.prx falls back to libc, so each object has one
identity.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
siginterrupt is a libSceLibcInternal export (the public SDK's stub table has it there, not in the
kernel tables) and FreeBSD 11.4's lib/libc/gen/siginterrupt.c reads the signal's disposition,
sets or clears the signal's bit in _sigintr and SA_RESTART, and installs the disposition again.
libc cannot call libkernel, so, as the pthread hooks do, libc keeps a registered sigaction and
the address of the _sigintr set, and libkernel registers both from a static initializer when it
loads. A call before that throws; the set is written without libkernel's registration lock, as
FreeBSD's libc does. Builds on #8866, which adds the set.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
Adrià