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the gnu config.sub script recognizes several mipsisa64* cpu types
that musl supports as mips64 targets.
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there was a copy paste error that could cause large ulp errors
in atan2l, atanl, asinl and acosl on aarch64, mips64 and mipsn32.
(the implementation is from freebsd fdlibm, but the tail end
of the polynomial was wrong. 128 bit long double functions
are not yet tested so this went undetected.)
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linux containers use separate mount namespace so the /proc
symlink might not point to the right device if the fd was
opened in the parent namespace, in this case return ENOENT.
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userfaultfd, membarrier and mlock2 syscalls got wired up in linux
commit fbce3befd60d40639bf3c6b60f7477b2f988f92d
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only matters if swapcontext is used in a signal handler running on an
altstack, new in linux commit 2a74213838104a41588d86fd5e8d344972891ace
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for GPRS tunneling protocol, new in linux commit
459aa660eb1d8ce67080da1983bb81d716aa5a69
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macros for qualcom ip router protocol, new in linux commit
bdabad3e363d825ddf9679dd431cca0b2c30f881
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despite sh not generally using register-pair alignment for 64-bit
syscall arguments, there are arch-specific versions of the syscall
entry points for pread and pwrite which include a dummy argument for
alignment before the 64-bit offset argument.
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revert commit 8c316e9e49d37ad92c2e7493e16166a2afca419f. it was wrong
and does not match how the kernel API works.
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the FIXME comment here was overlooked at the time locale support was
added.
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this code was already under #if 0, but could be confusing if a reader
didn't notice that, and it's almost surely full of bugs and/or
inconsistencies with the current code that uses the gethostbyname2_r
backend.
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Since commit 2f853dd6b9a95d5b13ee8f9df762125e0588df5d, all generated
headers are generated under the obj directory, which is already ignored.
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It's identical to the generic version, after evaluating the endian
preprocessor checks in the generic version.
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modern compilers (for gcc, versions 4.8 and later) automatically
pre-include <stdc-predef.h> to obtain the values of certain predefined
macros specified by ISO C but which reflect properties of the library
implementation, not just the compiler. provide values indicating that
wchar_t is Unicode-encoded and that Annex F (IEEE floating point) is
supported unless the compiler indicates otherwise.
based on patch by Masanori Ogino.
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these changes still do not yield a fully-conforming abort, but they
fix two known issues:
- per POSIX, termination via SIGKILL is not "abnormal", but both ISO C
and POSIX require abort to yield abnormal termination.
- raising SIGKILL fails to do anything to pid 1 in some containers.
now, the trapping instruction produced by a_crash() is expected to
produce abnormal termination, without the risk of invoking a signal
handler since SIGILL and SIGSEGV are blocked, and _Exit, which
contains an infinite loop analogous to the one being removed from
abort itself, is used as a last resort.
this implementation still fails to produce an exit status as if the
process terminated via SIGABRT in cases where SIGABRT is blocked or
ignored, but fixing that is not easy; the obvious pseudo-solutions all
have subtle race conditions where a concurrent fork or exec can expose
incorrect signal state.
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commit befa5866ee30d09c0c96e88af2eabff5911342ea performed this change
for struct definitions that did not also involve typedef, but omitted
the latter.
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last time elf.h was thoroughly updated sh was not yet supported
so these processor specific e_flags were missing.
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new regset in linux v3.18 for ptrace.
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see
https://sourceware.org/ml/libc-alpha/2016-01/msg00822.html
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marks different RLD_MAP for debugging PIE binaries.
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following
http://www.sco.com/developers/gabi/latest/ch4.sheader.html
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see
https://sourceware.org/ml/libc-alpha/2015-03/msg00580.html
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following
https://sourceware.org/ml/libc-alpha/2014-05/msg00332.html
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add ilp32 related relocs and alternative names for a few macros following
https://sourceware.org/ml/libc-alpha/2014-11/msg00455.html
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see
https://sourceware.org/ml/libc-alpha/2013-11/msg00315.html
https://sourceware.org/ml/libc-alpha/2013-11/msg00314.html
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following the corresponding binutils and glibc changes
https://sourceware.org/ml/binutils/2013-10/msg00372.html
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it was changed to EM_OR1K in 200d15479c0bc48471ee7b8e538ce33af990f82e
as that was meant to be the official name, but glibc and the latest
gabi spec still uses the EM_OPENRISC name:
http://www.sco.com/developers/gabi/latest/ch4.eheader.html
binutils defines both macros so we should do the same for backward
compatibility.
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placing the opening brace on the same line as the struct keyword/tag
is the style I prefer and seems to be the prevailing practice in more
recent additions.
these changes were generated by the command:
find include/ arch/*/bits -name '*.h' \
-exec sed -i '/^struct [^;{]*$/{N;s/\n/ /;}' {} +
and subsequently checked by hand to ensure that the regex did not pick
up any false positives.
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with this change, all three files are identical.
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it seems it was a typo.
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these were incorrectly using the generic definitions.
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same changes to the defined macros as in powerpc and generic bits.
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same changes as in the generic header.
and BOTHER and IBSHIFT were removed (present in linux uapi but not
in glibc) and TIOCSER_TEMT was added (present in glibc).
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add EXTA, EXTB, CIBAUD, CMSPAR, XCASE macros and hide them as well as
CBAUD, ECHOCTL, ECHOPRT, ECHOKE, FLUSHO, PENDIN in standard mode.
the new macros are both in glibc termios.h and in linux asm/termbits.h,
the later also contains IBSHIFT and BOTHER, those were not added.
these are not standard macros, but some of them are in the reserved
namespace so could be exposed, the ones which are not reserved are
CIBAUD, CMSPAR and XCASE (which was removed in issue 6), the rest
got hidden to be consistent with glibc.
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arm ioctl.h is the same as the generic one except this macro,
so a workaround solution is used to avoid another ioctl.h copy.
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musl does not define these on other targets either.
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it seems it was a typo.
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TIOCM_ macros were wrongly using the asm-generic/termios.h definitions
instead of the mips specific ones from asm/termios.h
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mips and powerpc use their own asm/ioctls.h, not the asm-generic/ioctls.h
and they lack termiox macros that are available on other targets.
see kernel commit 1d65b4a088de407e99714fdc27862449db04fb5c
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these are defined in linux asm/ioctls.h.
(powerpc64 and powerpc bits/ioctl.h are now identical)
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glibc ioctl.h has it too.
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TIOCTTYGSTRUCT, TIOCGHAYESESP, TIOCSHAYESESP and TIOCM_MODEM_BITS
were removed from the linux uapi and not present in glibc ioctl.h
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they were slightly different in musl, but should be the same:
the linux uapi and glibc headers are not different.
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the (unused) speed fields were omitted when these ports were first
added (within this release cycle, so not present in any release yet)
in accordance with how glibc defines the structure on mips archs.
however their omission does not match existing musl practice/intent.
glibc provides its own, mostly-unified termios structure definition
and performs translation in userspace to match the kernel structure
for the arch, but has gratuitous differences on a few archs like mips,
presumably as a result of historical mistakes. some other libcs use
the kernel definitions directly. musl essentially does that, by
matching the kernel layout in the part of the structure the kernel
will read/write, but leaves additional space at the end for
extensibility. these are nominally the (nonstandard) speed fields and
(on most archs) extra c_cc elements, but since they are not used they
could be repurposed if there's ever a need.
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commit 6d38c9cf80f47623e5e48190046673bbd0dc410b provided an
arm-specific version of posix_fadvise to address the alternate
argument order the kernel expects on arm, but neglected to address
that powerpc (32-bit) has the same issue. instead of having arch
variant files in duplicate, simply put the alternate version in the
top-level file under the control of a macro defined in syscall_arch.h.
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