| Commit message (Collapse) | Author | Age | Files | Lines |
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The current implementation of setcontext uses rt_sigreturn to restore
the contents of registers. This contrasts with the way most other
architectures implement setcontext:
powerpc64, mips, tile:
Call rt_sigreturn if context was created by a call to a signal handler,
otherwise restore in user code.
powerpc32:
Call swapcontext system call and don't call sigreturn or rt_sigreturn.
x86_64, sparc, hppa, sh, ia64, m68k, s390, arm:
Only support restoring "synchronous" contexts, that is contexts
created by getcontext, and restoring in user code and don't call
sigreturn or rt_sigreturn.
alpha:
Call sigreturn (but not rt_sigreturn) in all cases to do the restore.
The text of the setcontext manpage suggests that the requirement to be
able to restore a signal handler created context has been dropped from
SUSv2:
If the context was obtained by a call to a signal handler, then old
standard text says that "program execution continues with the program
instruction following the instruction interrupted by the signal".
However, this sentence was removed in SUSv2, and the present verdict
is "the result is unspecified".
Implementing setcontext by calling rt_sigreturn unconditionally causes
problems when used with sigaltstack as in BZ #16629. On this basis it
seems that aarch64 is broken and that new ports should only support
restoring contexts created with getcontext and do not need to call
rt_sigreturn at all.
This patch re-implements the aarch64 setcontext function to restore
the context in user code in a similar manner to x86_64 and other ports.
ChangeLog:
2014-04-17 Will Newton <will.newton@linaro.org>
[BZ #16629]
* sysdeps/unix/sysv/linux/aarch64/setcontext.S (__setcontext):
Re-implement to restore registers in user code and avoid
rt_sigreturn system call.
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[BZ #15215] This unifies various pthread_once architecture-specific
implementations which were using the same algorithm with slightly different
implementations. It also adds missing memory barriers that are required for
correctness.
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This patch moves the __PTHREAD_SPINS definition to arch specific header
since pthread_mutex_t layout is also arch specific. This leads to no
need to defining __PTHREAD_MUTEX_HAVE_ELISION and thus removing of the
undefined compiler warning.
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This patch makes the configure adds -D_CALL_ELF=1 when compiler does
not define _CALL_ELF (versions before powerpc64le support). It cleans
up compiler warnings on old compiler where _CALL_ELF is not defined
on powerpc64(be) builds.
It does by add a new config.make variable for configure-deduced
CPPFLAGS and accumulate into that (confix-extra-cppflags). It also
generalizes libc_extra_cflags so it accumulates in sysdeps configure
fragmenets.
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This patch continues fixing __ASSUME_* issues in preparation for
moving to a 2.6.32 minimum kernel version by addressing assumptions on
robust mutex and PI futex support availability. Those assumptions are
bug 9894, but to be clear this patch does not address all the issues
from that bug about wrong version assumptions, only those still
applicable for --enable-kernel=2.6.32 or later (with the expectation
that the move to that minimum kernel will obsolete the other parts of
the bug). The patch is independent of
<https://sourceware.org/ml/libc-alpha/2014-03/msg00585.html>, my other
pending-review patch preparing for the kernel version change; the two
together complete all the changes I believe are needed in preparation
regarding any macro in sysdeps/unix/sysv/linux/kernel-features.h that
would be affected by such a change. (I have not checked the
correctness of macros whose conditions are unaffected by such a
change, or macros only defined in other kernel-features.h files.)
As discussed in that bug, robust mutexes and PI futexes need
futex_atomic_cmpxchg_inatomic to be implemented, in addition to
certain syscalls needed for robust mutexes (and
architecture-independent kernel pieces for all the features in
question). That is, as I understand it, they need
futex_atomic_cmpxchg_inatomic to *work* (not return an ENOSYS error).
The issues identified in my analysis relate to ARM, M68K, MicroBlaze,
MIPS and SPARC.
On ARM, whether futex_atomic_cmpxchg_inatomic works depends on the
kernel configuration. As of 3.13, the condition for *not* working is
CONFIG_CPU_USE_DOMAINS && CONFIG_SMP. As of 2.6.32 it was simply
CONFIG_SMP that meant the feature was not implemented. I don't know
if there are any circumstances in which we can say "we can assume a
userspace glibc binary built with these options will never run on a
kernel with the problematic configuration", but at least for now I'm
just undefining the relevant __ASSUME_* macros for ARM.
On M68K, two of the three macros are undefined for kernels before
3.10, but as far as I can see __ASSUME_FUTEX_LOCK_PI is in the same
group needing futex_atomic_cmpxchg_inatomic support and so should be
undefined as well.
On MicroBlaze the required support was added in 2.6.33.
On MIPS, the support depends on cpu_has_llsc in the kernel - that is,
actual hardware LL/SC support (GCC and glibc for MIPS GNU/Linux rely
on the instructions being supported in some way, but it may be kernel
emulation; futex_atomic_cmpxchg_inatomic doesn't work with that
emulation). The same condition as in GCC for indicating LL/SC support
may not be available is used for undefining the macros in glibc,
__mips == 1 || defined _MIPS_ARCH_R5900. (Maybe we could in fact
desupport MIPS processors without the hardware support in glibc.)
On SPARC, 32-bit kernels don't support futex_atomic_cmpxchg_inatomic;
__arch64__ || __sparc_v9__ is used as the condition for binaries that
won't run on 32-bit kernels.
This patch is not tested beyond the sanity check of an x86_64 build.
[BZ #9894]
* sysdeps/unix/sysv/linux/kernel-features.h
[__sparc__ && !__arch64__ && !__sparc_v9__]
(__ASSUME_SET_ROBUST_LIST): Do not define.
[__sparc__ && !__arch64__ && !__sparc_v9__]
(__ASSUME_FUTEX_LOCK_PI): Likewise.
[__sparc__ && !__arch64__ && !__sparc_v9__] (__ASSUME_REQUEUE_PI):
Likewise.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
(__ASSUME_FUTEX_LOCK_PI): Undefine.
(__ASSUME_REQUEUE_PI): Likewise.
(__ASSUME_SET_ROBUST_LIST): Likewise.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
[__LINUX_KERNEL_VERSION < 0x030a00] (__ASSUME_FUTEX_LOCK_PI):
Undefine.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_FUTEX_LOCK_PI):
Likewise.
[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_REQUEUE_PI):
Likewise.
[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_SET_ROBUST_LIST):
Likewise.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
[__mips == 1 || _MIPS_ARCH_R5900] (__ASSUME_FUTEX_LOCK_PI):
Undefine.
[__mips == 1 || _MIPS_ARCH_R5900] (__ASSUME_REQUEUE_PI): Likewise.
[__mips == 1 || _MIPS_ARCH_R5900] (__ASSUME_SET_ROBUST_LIST):
Likewise.
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Continuing the fixes for __ASSUME_* issues in preparation for moving
to a 2.6.32 minimum kernel version, this *untested* patch fixes bug
16648, the definition of __ASSUME_ATFCTS meaning that the futimesat
syscall is assumed for all MicroBlaze kernels despite not being
present until 2.6.33.
__ASSUME_ATFCTS controls conditionals relating to a lot of different
syscalls in Linux-specific code (fstatat64 faccessat fchmodat fchownat
futimesat newfstatat linkat mkdirat openat readlinkat renameat
symlinkat unlinkat mknodat), where whether newfstatat fstatat64
futimesat are used depends on the architecture, as well as controlling
whether openat64_not_cancel_3 is expected to work in
sysdeps/posix/getcwd.c. The assumptions are all OK as of 2.6.32
except for this MicroBlaze case, and it's generally desirable to get
rid of as many of the __ASSUME_ATFCTS conditionals as possible, to
simplify the code (the fallbacks include potential unbounded dynamic
stack allocations). Thus, rather than the simplest approach of
undefining __ASSUME_ATFCTS for older kernels on MicroBlaze, this patch
takes the approach of using the linux-generic implementation of
futimesat for MicroBlaze kernels before 2.6.33 (all such kernels have
the utimensat syscall).
[BZ #16648]
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_FUTIMESAT): Define.
* sysdeps/unix/sysv/linux/microblaze/futimesat.c: New file.
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(BZ #16713).
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To reproduce:
# ip li add name dummy0 type dummy
# site_id=$(head -c6 /dev/urandom | od -tx2 -An | tr ' ' ':')
# for ((i = 0; i < 65536; i++)) do
> ip ad ad $(printf fd80$site_id::%04x $i)/128 dev dummy0
> done
# (ulimit -s 900; getent ahosts localhost)
# ip li de dummy0
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This patch fixes -Wundef warnings related to the _ABI* macros on MIPS.
GCC predefines only the _ABI* macro related to the ABI actually in
use, meaning that a conditional such as "#if _MIPS_SIM == _ABI64" is
true only for the ABI in question (all the macros are nonzero), but
produces a -Wundef warning for the other ABIs. The normal approach to
using these macros is to include <sgidefs.h>, which ensures that all
three _ABI* macros are defined rather than just one; this patch does
so in the places that caused warnings (the bulk of the warnings
arising from <bits/wordsize.h>). Tested that the warnings are fixed.
* sysdeps/mips/bits/wordsize.h: Include <sgidefs.h>.
* sysdeps/unix/sysv/linux/mips/getrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/setrlimit64.c: Likewise.
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Reviewing (for all architectures, with a baseline kernel version of
2.6.32) the kernel support for features for which __ASSUME_* macros
would be affected by a move to 2.6.32 as minimum kernel version showed
up that __ASSUME_PREADV and __ASSUME_PWRITEV were wrongly defined for
MicroBlaze (despite the corresponding syscall table entries not being
wired up in the kernel) and Alpha for 2.6.30 and above (although the
support on Alpha was added in 2.6.33). This patch makes the
kernel-features.h files undefine those macros for appropriate
versions.
[BZ #16649]
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_PREADV): Undefine.
[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_PWRITEV): Likewise.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_PREADV): Undefine.
(__ASSUME_PWRITEV): Likewise.
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This way, non-Linux ports using the Linux values for bits/mman.h
constants need not duplicate the header.
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This comment appears to have been copied from the ARM port where it
makes more sense.
2014-03-18 Will Newton <will.newton@linaro.org>
* sysdeps/unix/sysv/linux/aarch64/sysdep.h: Remove
inaccurate comment.
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Reviewing (for all architectures, with a baseline kernel version of
2.6.32) the kernel support for features for which __ASSUME_* macros
would be affected by a move to 2.6.32 as minimum kernel version showed
up that __ASSUME_PSELECT was wrongly defined for MicroBlaze, despite
the corresponding syscall table entry not being wired up in the
MicroBlaze kernel.
This patch makes the MicroBlaze kernel-features.h undefine
__ASSUME_PSELECT. I'd also encourage wiring it up in the kernel (so
you can then make this #undef conditional, and eventually obsolete
once a recent-enough kernel is required). I suspect it wasn't wired
up because of the mistaken comment in asm/unistd.h "obsolete ->
sys_pselect7" (there is no such syscall as pselect7).
[BZ #16642]
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_PSELECT): Undefine.
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<bits/siginfo.h> causes symbols ILL_*, FPE_*, SEGV_* BUS_*, CLD_*,
POLL_* and TRAP_* to be exposed in <signal.h> (and <sys/wait.h>), even
though those symbols are not in non-XSI POSIX before POSIX.1-2008 and
even in POSIX.1-2008 the TRAP_* symbols are XSI-only. This patch
conditions the symbols appropriately in the various <bits/siginfo.h>
implementations (various <signal.h> and <sys/wait.h> conformtest
issues remain for standards other than POSIX (1995/6)). Tested
x86_64.
[BZ #16674]
* bits/siginfo.h (ILL_ILLOPC): Condition on [__USE_XOPEN_EXTENDED
|| __USE_XOPEN2K8].
(ILL_ILLOPN): Likewise.
(ILL_ILLADR): Likewise.
(ILL_ILLTRP): Likewise.
(ILL_PRVOPC): Likewise.
(ILL_PRVREG): Likewise.
(ILL_COPROC): Likewise.
(ILL_BADSTK): Likewise.
(FPE_INTDIV): Likewise.
(FPE_INTOVF): Likewise.
(FPE_FLTDIV): Likewise.
(FPE_FLTOVF): Likewise.
(FPE_FLTUND): Likewise.
(FPE_FLTRES): Likewise.
(FPE_FLTINV): Likewise.
(FPE_FLTSUB): Likewise.
(SEGV_MAPERR): Likewise.
(SEGV_ACCERR): Likewise.
(BUS_ADRALN): Likewise.
(BUS_ADRERR): Likewise.
(BUS_OBJERR): Likewise.
(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
(TRAP_TRACE): Likewise.
(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
__USE_XOPEN2K8].
(CLD_KILLED): Likewise.
(CLD_DUMPED): Likewise.
(CLD_TRAPPED): Likewise.
(CLD_STOPPED): Likewise.
(CLD_CONTINUED): Likewise.
(POLL_IN): Likewise.
(POLL_OUT): Likewise.
(POLL_MSG): Likewise.
(POLL_ERR): Likewise.
(POLL_PRI): Likewise.
(POLL_HUP): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/siginfo.h (ILL_ILLOPC):
Likewise.
(ILL_ILLOPN): Likewise.
(ILL_ILLADR): Likewise.
(ILL_ILLTRP): Likewise.
(ILL_PRVOPC): Likewise.
(ILL_PRVREG): Likewise.
(ILL_COPROC): Likewise.
(ILL_BADSTK): Likewise.
(FPE_INTDIV): Likewise.
(FPE_INTOVF): Likewise.
(FPE_FLTDIV): Likewise.
(FPE_FLTOVF): Likewise.
(FPE_FLTUND): Likewise.
(FPE_FLTRES): Likewise.
(FPE_FLTINV): Likewise.
(FPE_FLTSUB): Likewise.
(SEGV_MAPERR): Likewise.
(SEGV_ACCERR): Likewise.
(BUS_ADRALN): Likewise.
(BUS_ADRERR): Likewise.
(BUS_OBJERR): Likewise.
(BUS_MCEERR_AR): Likewise.
(BUS_MCEERR_AO): Likewise.
(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
(TRAP_TRACE): Likewise.
(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
__USE_XOPEN2K8].
(CLD_KILLED): Likewise.
(CLD_DUMPED): Likewise.
(CLD_TRAPPED): Likewise.
(CLD_STOPPED): Likewise.
(CLD_CONTINUED): Likewise.
(POLL_IN): Likewise.
(POLL_OUT): Likewise.
(POLL_MSG): Likewise.
(POLL_ERR): Likewise.
(POLL_PRI): Likewise.
(POLL_HUP): Likewise.
* sysdeps/unix/sysv/linux/bits/siginfo.h (ILL_ILLOPC): Likewise.
(ILL_ILLOPN): Likewise.
(ILL_ILLADR): Likewise.
(ILL_ILLTRP): Likewise.
(ILL_PRVOPC): Likewise.
(ILL_PRVREG): Likewise.
(ILL_COPROC): Likewise.
(ILL_BADSTK): Likewise.
(FPE_INTDIV): Likewise.
(FPE_INTOVF): Likewise.
(FPE_FLTDIV): Likewise.
(FPE_FLTOVF): Likewise.
(FPE_FLTUND): Likewise.
(FPE_FLTRES): Likewise.
(FPE_FLTINV): Likewise.
(FPE_FLTSUB): Likewise.
(SEGV_MAPERR): Likewise.
(SEGV_ACCERR): Likewise.
(BUS_ADRALN): Likewise.
(BUS_ADRERR): Likewise.
(BUS_OBJERR): Likewise.
(BUS_MCEERR_AR): Likewise.
(BUS_MCEERR_AO): Likewise.
(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
(TRAP_TRACE): Likewise.
(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
__USE_XOPEN2K8].
(CLD_KILLED): Likewise.
(CLD_DUMPED): Likewise.
(CLD_TRAPPED): Likewise.
(CLD_STOPPED): Likewise.
(CLD_CONTINUED): Likewise.
(POLL_IN): Likewise.
(POLL_OUT): Likewise.
(POLL_MSG): Likewise.
(POLL_ERR): Likewise.
(POLL_PRI): Likewise.
(POLL_HUP): Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/siginfo.h (ILL_ILLOPC):
Likewise.
(ILL_ILLOPN): Likewise.
(ILL_ILLADR): Likewise.
(ILL_ILLTRP): Likewise.
(ILL_PRVOPC): Likewise.
(ILL_PRVREG): Likewise.
(ILL_COPROC): Likewise.
(ILL_BADSTK): Likewise.
(ILL_BADIADDR): Likewise.
(ILL_BREAK): Likewise.
(FPE_INTDIV): Likewise.
(FPE_INTOVF): Likewise.
(FPE_FLTDIV): Likewise.
(FPE_FLTOVF): Likewise.
(FPE_FLTUND): Likewise.
(FPE_FLTRES): Likewise.
(FPE_FLTINV): Likewise.
(FPE_FLTSUB): Likewise.
(FPE_DECOVF): Likewise.
(FPE_DECDIV): Likewise.
(FPE_DECERR): Likewise.
(FPE_INVASC): Likewise.
(FPE_INVDEC): Likewise.
(SEGV_MAPERR): Likewise.
(SEGV_ACCERR): Likewise.
(SEGV_PSTKOVF): Likewise.
(BUS_ADRALN): Likewise.
(BUS_ADRERR): Likewise.
(BUS_OBJERR): Likewise.
(BUS_MCEERR_AR): Likewise.
(BUS_MCEERR_AO): Likewise.
(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
(TRAP_TRACE): Likewise.
(TRAP_BRANCH): Likewise.
(TRAP_HWBKPT): Likewise.
(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
__USE_XOPEN2K8].
(CLD_KILLED): Likewise.
(CLD_DUMPED): Likewise.
(CLD_TRAPPED): Likewise.
(CLD_STOPPED): Likewise.
(CLD_CONTINUED): Likewise.
(POLL_IN): Likewise.
(POLL_OUT): Likewise.
(POLL_MSG): Likewise.
(POLL_ERR): Likewise.
(POLL_PRI): Likewise.
(POLL_HUP): Likewise.
* sysdeps/unix/sysv/linux/mips/bits/siginfo.h (ILL_ILLOPC): Likewise.
(ILL_ILLOPN): Likewise.
(ILL_ILLADR): Likewise.
(ILL_ILLTRP): Likewise.
(ILL_PRVOPC): Likewise.
(ILL_PRVREG): Likewise.
(ILL_COPROC): Likewise.
(ILL_BADSTK): Likewise.
(FPE_INTDIV): Likewise.
(FPE_INTOVF): Likewise.
(FPE_FLTDIV): Likewise.
(FPE_FLTOVF): Likewise.
(FPE_FLTUND): Likewise.
(FPE_FLTRES): Likewise.
(FPE_FLTINV): Likewise.
(FPE_FLTSUB): Likewise.
(SEGV_MAPERR): Likewise.
(SEGV_ACCERR): Likewise.
(BUS_ADRALN): Likewise.
(BUS_ADRERR): Likewise.
(BUS_OBJERR): Likewise.
(BUS_MCEERR_AR): Likewise.
(BUS_MCEERR_AO): Likewise.
(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
(TRAP_TRACE): Likewise.
(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
__USE_XOPEN2K8].
(CLD_KILLED): Likewise.
(CLD_DUMPED): Likewise.
(CLD_TRAPPED): Likewise.
(CLD_STOPPED): Likewise.
(CLD_CONTINUED): Likewise.
(POLL_IN): Likewise.
(POLL_OUT): Likewise.
(POLL_MSG): Likewise.
(POLL_ERR): Likewise.
(POLL_PRI): Likewise.
(POLL_HUP): Likewise.
* sysdeps/unix/sysv/linux/s390/bits/siginfo.h (ILL_ILLOPC): Likewise.
(ILL_ILLOPN): Likewise.
(ILL_ILLADR): Likewise.
(ILL_ILLTRP): Likewise.
(ILL_PRVOPC): Likewise.
(ILL_PRVREG): Likewise.
(ILL_COPROC): Likewise.
(ILL_BADSTK): Likewise.
(FPE_INTDIV): Likewise.
(FPE_INTOVF): Likewise.
(FPE_FLTDIV): Likewise.
(FPE_FLTOVF): Likewise.
(FPE_FLTUND): Likewise.
(FPE_FLTRES): Likewise.
(FPE_FLTINV): Likewise.
(FPE_FLTSUB): Likewise.
(SEGV_MAPERR): Likewise.
(SEGV_ACCERR): Likewise.
(BUS_ADRALN): Likewise.
(BUS_ADRERR): Likewise.
(BUS_OBJERR): Likewise.
(BUS_MCEERR_AR): Likewise.
(BUS_MCEERR_AO): Likewise.
(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
(TRAP_TRACE): Likewise.
(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
__USE_XOPEN2K8].
(CLD_KILLED): Likewise.
(CLD_DUMPED): Likewise.
(CLD_TRAPPED): Likewise.
(CLD_STOPPED): Likewise.
(CLD_CONTINUED): Likewise.
(POLL_IN): Likewise.
(POLL_OUT): Likewise.
(POLL_MSG): Likewise.
(POLL_ERR): Likewise.
(POLL_PRI): Likewise.
(POLL_HUP): Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/siginfo.h (ILL_ILLOPC): Likewise.
(ILL_ILLOPN): Likewise.
(ILL_ILLADR): Likewise.
(ILL_ILLTRP): Likewise.
(ILL_PRVOPC): Likewise.
(ILL_PRVREG): Likewise.
(ILL_COPROC): Likewise.
(ILL_BADSTK): Likewise.
(FPE_INTDIV): Likewise.
(FPE_INTOVF): Likewise.
(FPE_FLTDIV): Likewise.
(FPE_FLTOVF): Likewise.
(FPE_FLTUND): Likewise.
(FPE_FLTRES): Likewise.
(FPE_FLTINV): Likewise.
(FPE_FLTSUB): Likewise.
(SEGV_MAPERR): Likewise.
(SEGV_ACCERR): Likewise.
(BUS_ADRALN): Likewise.
(BUS_ADRERR): Likewise.
(BUS_OBJERR): Likewise.
(BUS_MCEERR_AR): Likewise.
(BUS_MCEERR_AO): Likewise.
(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
(TRAP_TRACE): Likewise.
(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
__USE_XOPEN2K8].
(CLD_KILLED): Likewise.
(CLD_DUMPED): Likewise.
(CLD_TRAPPED): Likewise.
(CLD_STOPPED): Likewise.
(CLD_CONTINUED): Likewise.
(POLL_IN): Likewise.
(POLL_OUT): Likewise.
(POLL_MSG): Likewise.
(POLL_ERR): Likewise.
(POLL_PRI): Likewise.
(POLL_HUP): Likewise.
* sysdeps/unix/sysv/linux/tile/bits/siginfo.h (ILL_ILLOPC): Likewise.
(ILL_ILLOPN): Likewise.
(ILL_ILLADR): Likewise.
(ILL_ILLTRP): Likewise.
(ILL_PRVOPC): Likewise.
(ILL_PRVREG): Likewise.
(ILL_COPROC): Likewise.
(ILL_BADSTK): Likewise.
(ILL_DBLFLT): Likewise.
(ILL_HARDWALL): Likewise.
(FPE_INTDIV): Likewise.
(FPE_INTOVF): Likewise.
(FPE_FLTDIV): Likewise.
(FPE_FLTOVF): Likewise.
(FPE_FLTUND): Likewise.
(FPE_FLTRES): Likewise.
(FPE_FLTINV): Likewise.
(FPE_FLTSUB): Likewise.
(SEGV_MAPERR): Likewise.
(SEGV_ACCERR): Likewise.
(BUS_ADRALN): Likewise.
(BUS_ADRERR): Likewise.
(BUS_OBJERR): Likewise.
(BUS_MCEERR_AR): Likewise.
(BUS_MCEERR_AO): Likewise.
(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
(TRAP_TRACE): Likewise.
(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
__USE_XOPEN2K8].
(CLD_KILLED): Likewise.
(CLD_DUMPED): Likewise.
(CLD_TRAPPED): Likewise.
(CLD_STOPPED): Likewise.
(CLD_CONTINUED): Likewise.
(POLL_IN): Likewise.
(POLL_OUT): Likewise.
(POLL_MSG): Likewise.
(POLL_ERR): Likewise.
(POLL_PRI): Likewise.
(POLL_HUP): Likewise.
* sysdeps/unix/sysv/linux/x86/bits/siginfo.h (ILL_ILLOPC): Likewise.
(ILL_ILLOPN): Likewise.
(ILL_ILLADR): Likewise.
(ILL_ILLTRP): Likewise.
(ILL_PRVOPC): Likewise.
(ILL_PRVREG): Likewise.
(ILL_COPROC): Likewise.
(ILL_BADSTK): Likewise.
(FPE_INTDIV): Likewise.
(FPE_INTOVF): Likewise.
(FPE_FLTDIV): Likewise.
(FPE_FLTOVF): Likewise.
(FPE_FLTUND): Likewise.
(FPE_FLTRES): Likewise.
(FPE_FLTINV): Likewise.
(FPE_FLTSUB): Likewise.
(SEGV_MAPERR): Likewise.
(SEGV_ACCERR): Likewise.
(BUS_ADRALN): Likewise.
(BUS_ADRERR): Likewise.
(BUS_OBJERR): Likewise.
(BUS_MCEERR_AR): Likewise.
(BUS_MCEERR_AO): Likewise.
(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
(TRAP_TRACE): Likewise.
(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
__USE_XOPEN2K8].
(CLD_KILLED): Likewise.
(CLD_DUMPED): Likewise.
(CLD_TRAPPED): Likewise.
(CLD_STOPPED): Likewise.
(CLD_CONTINUED): Likewise.
(POLL_IN): Likewise.
(POLL_OUT): Likewise.
(POLL_MSG): Likewise.
(POLL_ERR): Likewise.
(POLL_PRI): Likewise.
(POLL_HUP): Likewise.
* conform/Makefile (test-xfail-POSIX/signal.h/conform): Remove.
(test-xfail-POSIX/sys/wait.h/conform): Likewise.
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The __ASSUME_UTIMES macro describes whether the utimes syscall is
present. For linux-generic architectures, it isn't (utimensat is
instead), so the macro should not be defined for them; this patch
removes the spurious definitions for such architectures. (Those
definitions don't actually cause any user-visible bug, because
futimes.c doesn't use __ASSUME_UTIMES if __ASSUME_UTIMENSAT is
defined, and futimesat.c and utimes.c are overridden for
linux-generic, but the definitions are still logically incorrect.)
* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
(__ASSUME_UTIMES): Remove.
* sysdeps/unix/sysv/linux/tile/kernel-features.h
(__ASSUME_UTIMES): Likewise.
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This patch completes the headers cleanup consequent on removal of
_BSD_SOURCE and _SVID_SOURCE (apart from any subsequent deprecations):
* #endif conditionals that referred to BSD or SVID are updated.
* Redundant __USE_* tests in cases involving __USE_MISC are removed.
This includes cases such as __USE_MISC || __USE_ISOC99, where
__USE_MISC is redundant (because __USE_MISC is only ever defined in
the default / _DEFAULT_SOURCE / _GNU_SOURCE case, when __USE_ISOC99
is also defined; the same applies to the non-XSI-extended POSIX
versions), and cases involving __USE_GNU, where __USE_GNU is
redundant (because if __USE_GNU is defined, so are the other __USE_*
macros). There may well be other cases of __USE_FOO || __USE_BAR
tests that could be simplified because one macro implies the other;
this patch only addresses cases involving __USE_MISC.
Tested x86_64.
* bits/fcntl.h [__USE_MISC]: Remove redundant conditionals.
* bits/sigaction.h [__USE_MISC]: Likewise.
* bits/waitstatus.h: Update #endif comments.
* ctype/ctype.h: Likewise.
* dirent/dirent.h: Likewise.
[__USE_MISC]: Remove redundant conditionals.
* grp/grp.h: Update #endif comments.
[__USE_GNU]: Remove redundant conditionals.
[__USE_MISC]: Likewise.
* inet/netinet/in.h [__USE_GNU]: Likewise.
* io/sys/stat.h [__USE_MISC]: Likewise.
* libio/bits/stdio-ldbl.h [__USE_MISC]: Likewise.
* libio/bits/stdio.h: Update #endif comments.
[__USE_MISC]: Remove redundant conditionals.
* libio/bits/stdio2.h [__USE_MISC]: Likewise.
* libio/stdio.h: Update #endif comments.
[__USE_MISC]: Remove redundant conditionals.
* math/bits/math-finite.h [__USE_MISC]: Likewise.
* math/bits/mathcalls.h [__USE_MISC]: Likewise.
* math/math.h: Update #else and #endif comments.
[__USE_MISC]: Remove redundant conditionals.
* misc/sys/uio.h: Update #endif comments.
* posix/bits/unistd.h [__USE_MISC]: Remove redundant conditionals.
* posix/glob.h [__USE_MISC]: Likewise.
* posix/sys/types.h: Update #endif comments.
[__USE_MISC]: Remove redundant conditionals.
* posix/sys/wait.h: Update #endif comments.
[__USE_MISC]: Remove redundant conditionals.
* posix/unistd.h: Update #endif comments.
[__USE_MISC]: Remove redundant conditionals.
* pwd/pwd.h [__USE_GNU]: Likewise.
[__USE_MISC]: Likewise.
* resolv/netdb.h [__USE_GNU]: Likewise.
* signal/signal.h: Update #endif comments.
[__USE_MISC]: Remove redundant conditionals.
* stdlib/stdlib.h: Update #else and #endif comments.
[__USE_MISC]: Remove redundant conditionals.
[__USE_GNU]: Likewise.
* string/bits/string2.h [__USE_MISC]: Likewise.
* string/string.h: Update #endif comments.
[__USE_MISC]: Remove redundant conditionals.
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h [__USE_MISC]:
Likewise.
* sysdeps/mach/hurd/bits/fcntl.h [__USE_MISC]: Likewise.
* sysdeps/mach/hurd/bits/stat.h [__USE_MISC]: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/sigaction.h [__USE_MISC]:
Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/stat.h [__USE_MISC]:
Likewise.
* sysdeps/unix/sysv/linux/bits/fcntl-linux.h: Update #endif
comments.
[__USE_MISC]: Remove redundant conditionals.
* sysdeps/unix/sysv/linux/bits/in.h [__USE_GNU]: Likewise.
* sysdeps/unix/sysv/linux/bits/sigaction.h [__USE_MISC]: Likewise.
* sysdeps/unix/sysv/linux/bits/socket.h [__USE_GNU]: Likewise.
* sysdeps/unix/sysv/linux/bits/stat.h [__USE_MISC]: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/sigaction.h [__USE_MISC]:
Likewise.
* sysdeps/unix/sysv/linux/m68k/bits/stat.h [__USE_MISC]: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/sigaction.h [__USE_MISC]:
Likewise.
* sysdeps/unix/sysv/linux/mips/bits/stat.h [__USE_MISC]: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/stat.h [__USE_MISC]:
Likewise.
* sysdeps/unix/sysv/linux/s390/bits/sigaction.h [__USE_MISC]:
Likewise.
* sysdeps/unix/sysv/linux/s390/bits/stat.h [__USE_MISC]: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/sigaction.h [__USE_MISC]:
Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/stat.h [__USE_MISC]:
Likewise.
* sysdeps/unix/sysv/linux/x86/bits/stat.h [__USE_MISC]: Likewise.
* sysdeps/x86/bits/string.h: Update #endif comments.
* sysdeps/x86/fpu/bits/mathinline.h [__USE_MISC]: Remove redundant
conditionals.
* time/sys/time.h: Update #endif comments.
* time/time.h: Likewise.
[__USE_MISC]: Remove redundant conditionals.
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Similar to the issues for accept4 and recvmmsg, __ASSUME_SENDMMSG is
also confused about whether it relates to function availability or
socketcall operation availability, and the conditions for the
definition are always wrong (sendmmsg appeared in Linux kernel 3.0,
not 2.6.39); this is now bug 16611.
This patch splits the macro into separate macros like those for
accept4 and recvmmsg, defining them for appropriate kernel versions.
Tested x86_64, including that disassembly of the installed shared
libraries is unchanged by this patch.
[BZ #16611]
* sysdeps/unix/sysv/linux/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030000 && __ASSUME_SOCKETCALL]
(__ASSUME_SENDMMSG_SOCKETCALL): Define.
[__LINUX_KERNEL_VERSION >= 0x030000 && (__i386__ || __x86_64__ ||
__powerpc__ || __sh__ || __sparc__)] (__ASSUME_SENDMMSG_SYSCALL):
Likewise.
[__i386__ || __powerpc__ || __sh__ || __sparc__]
(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
[__ASSUME_SENDMMSG_SOCKETCALL || __ASSUME_SENDMMSG_SYSCALL]
(__ASSUME_SENDMMSG): Define instead of using previous
[__LINUX_KERNEL_VERSION >= 0x020627] condition.
* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
(__ASSUME_SENDMMSG_SYSCALL): Define.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030200] (__ASSUME_SENDMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/internal_sendmmsg.S [__ASSUME_SOCKETCALL
&& !__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_SENDMMSG_SYSCALL] (__NR_sendmmsg): Undefine.
[__ASSUME_SENDMMSG]: Change conditionals to
[__ASSUME_SENDMMSG_SOCKETCALL].
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030300] (__ASSUME_SENDMMSG_SYSCALL):
Define.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030100] (__ASSUME_SENDMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/sendmmsg.c [__ASSUME_SOCKETCALL &&
!__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_SENDMMSG_SYSCALL] (__NR_sendmmsg): Undefine.
[!__ASSUME_SENDMMSG]: Change conditional to
[!__ASSUME_SENDMMSG_SOCKETCALL].
* sysdeps/unix/sysv/linux/tile/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
Define.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030100] (__ASSUME_SENDMMSG_SYSCALL):
Define.
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Similar to the issues for accept4, __ASSUME_RECVMMSG is also confused
about whether it relates to function availability or socketcall
operation availability; this is now bug 16610.
Nothing actually tests __ASSUME_RECVMMSG for function availability,
but implicit in the definition in kernel-features.h is the idea that
it makes sense when the syscall is available and socketcall is not
being used. As with accept4, there are architectures where the
syscall was added later than the socketcall operation, meaning that
assuming glibc is built with recent enough kernel headers, it does not
attempt to use socketcall for these operations and __ASSUME_RECVMMSG
gets defined for kernels >= 2.6.33 even when the syscall was only
added later.
This patch splits the macro into separate macros like those used for
accept4; having similar macro structure in both cases (and for
sendmmsg once I've dealt with that) seems likely to be less confusing
than having a different structure on the basis of nothing actually
needing to assume the recvmmsg function works. Appropriate
definitions are added for all architectures.
Architecture-specific note: Tile's kernel-features.h says "TILE glibc
support starts with 2.6.36", which is accurate in that 2.6.36 was the
first kernel version with Tile support, and on that basis I've made
that header define __ASSUME_RECVMMSG_SYSCALL unconditionally.
However, Tile's configure.ac has arch_minimum_kernel=2.6.32. Since
arch_minimum_kernel is meant to reflect only kernel.org kernel
versions, I think that should change to 2.6.36. (If using glibc with
kernel versions from before a port went in kernel.org, it's your
responsibility to change arch_minimum_kernel in a local patch, and at
the same time to adjust any __ASSUME_* definitions that may not be
correct for your older kernel; for developing the official glibc it
should only ever be necessary to consider what official kernel.org
releases support.)
Tested x86_64, including that disassembly of the installed shared
libraries is unchanged by this patch.
[BZ #16610]
* sysdeps/unix/sysv/linux/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621 && __ASSUME_SOCKETCALL]
(__ASSUME_RECVMMSG_SOCKETCALL): Define.
[(__LINUX_KERNEL_VERSION >= 0x020621 && (__i386__ || __x86_64__ ||
__sparc__)) || (__LINUX_KERNEL_VERSION >= 0x020625 && (__powerpc__
|| __sh__))] (__ASSUME_RECVMMSG_SYSCALL): Likewise.
[__i386__ || __sparc__]
(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
[__ASSUME_RECVMMSG_SOCKETCALL || __ASSUME_RECVMMSG_SYSCALL]
(__ASSUME_RECVMMSG): Define instead of using previous
[__LINUX_KERNEL_VERSION >= 0x020621] condition.
* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
(__ASSUME_RECVMMSG_SYSCALL): Define.
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/internal_recvmmsg.S [__ASSUME_SOCKETCALL
&& !__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_RECVMMSG_SYSCALL] (__NR_recvmmsg): Undefine.
[__ASSUME_RECVMMSG]: Change condition to
[__ASSUME_RECVMMSG_SOCKETCALL].
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
Define.
(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/recvmmsg.c [__ASSUME_SOCKETCALL &&
!__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_RECVMMSG_SYSCALL] (__NR_recvmmsg): Undefine.
[!__ASSUME_RECVMMSG]: Change condition to
[!__ASSUME_RECVMMSG_SOCKETCALL].
* sysdeps/unix/sysv/linux/tile/kernel-features.h
(__ASSUME_RECVMMSG_SYSCALL): Define.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020622] (__ASSUME_RECVMMSG_SYSCALL):
Define.
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In <https://sourceware.org/ml/libc-alpha/2013-12/msg00008.html>,
Aurelien noted issues with the definition of __ASSUME_ACCEPT4, which I
discussed in more detail in
<https://sourceware.org/ml/libc-alpha/2013-12/msg00014.html>; these
are now bug 16609.
As previously noted, __ASSUME_ACCEPT4 is used in two ways:
* In OS-independent code, to mean "accept4 can be assumed to work
rather than fail with ENOSYS". It doesn't matter whether it's
implemented with socketcall or a separate syscall.
* In Linux-specific code, to mean "the socketcall multiplex syscall
can be assumed to handle the accept4 operation. When used in
Linux-specific code, it *never* refers to anything relating to the
accept4 syscall, only to the socketcall multiplexer.
This patch splits the macro into separate __ASSUME_ACCEPT4_SOCKETCALL,
__ASSUME_ACCEPT4_SYSCALL and __ASSUME_ACCEPT4 to clarify the different
cases involved. A macro __ASSUME_SOCKETCALL is added for convenience
in writing logic relating to all socketcall architectures. In
addition, to address the issue of architectures where socketcall
support for accept4 was added before a separate syscall was added (and
so the separate syscall should not be used unless known to be present
or fallback to socketcall is available), a fourth macro
__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL is added to indicate that the
syscall became available at the same time as socketcall support. This
is then used in the relevant places in a conditional determining
whether to undefine __NR_accept4 (the simple approach to avoiding the
syscall's presence causing problems; I didn't try to implement runtime
fallback from the syscall to socketcall).
Architecture-specific note: alpha defined __ASSUME_ACCEPT4 for 2.6.33
and later, but actually the syscall was added for alpha in 3.2, so
this patch uses the correct condition for __ASSUME_ACCEPT4_SYSCALL
there.
Tested x86_64, including that disassembly of the installed shared
libraries is unchanged by this patch.
[BZ #16609]
* sysdeps/unix/sysv/linux/kernel-features.h [__i386__ ||
__powerpc__ || __s390__ || __sh__ || __sparc__]
(__ASSUME_SOCKETCALL): Define.
[__LINUX_KERNEL_VERSION && __ASSUME_SOCKETCALL]
(__ASSUME_ACCEPT4_SOCKETCALL): Likewise.
[(__LINUX_KERNEL_VERSION >= 0x02061c && (__x86_64__ || __sparc__))
|| (__LINUX_KERNEL_VERSION >= 0x020625 && (__powerpc__ ||
__sh__))] (__ASSUME_ACCEPT4_SYSCALL): Likewise.
[__sparc__] (__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL): Likewise.
[__ASSUME_ACCEPT4_SOCKETCALL || __ASSUME_ACCEPT4_SYSCALL]
(__ASSUME_ACCEPT4): Define instead of using previous
[__LINUX_KERNEL_VERSION >= 0x02061c && (__i386__ || __x86_64__ ||
__powerpc__ || __sparc__ || __s390__)] condition.
* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/accept4.c [__ASSUME_SOCKETCALL &&
!__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_ACCEPT4_SYSCALL] (__NR_accept4): Undefine.
[!__ASSUME_ACCEPT4]: Change condition to
[!__ASSUME_ACCEPT4_SOCKETCALL].
* sysdeps/unix/sysv/linux/alpha/kernel-features.h
(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL. Correct
condition to [__LINUX_KERNEL_VERSION >= 0x030200].
* sysdeps/unix/sysv/linux/arm/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020624] (__ASSUME_ACCEPT4): Change to
__ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/i386/accept4.S [__ASSUME_ACCEPT4]:
Change conditions to [__ASSUME_ACCEPT4_SOCKETCALL].
* sysdeps/unix/sysv/linux/ia64/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x030300] (__ASSUME_ACCEPT4): Change to
__ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/internal_accept4.S [__ASSUME_SOCKETCALL
&& !__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL &&
!__ASSUME_ACCEPT4_SYSCALL] (__NR_accept4): Undefine.
[__ASSUME_ACCEPT4]: Change condition to
[__ASSUME_ACCEPT4_SOCKETCALL].
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_SOCKETCALL): Define.
[__LINUX_KERNEL_VERSION >= 0x02061c] (__ASSUME_ACCEPT4): Remove.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_SOCKETCALL): Define.
(__ASSUME_ACCEPT4): Remove.
[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_ACCEPT4_SYSCALL):
Define.
* sysdeps/unix/sysv/linux/mips/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x02061f] (__ASSUME_ACCEPT4_SYSCALL):
Likewise.
* sysdeps/unix/sysv/linux/tile/kernel-features.h
(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/hppa/kernel-features.h
[__LINUX_KERNEL_VERSION >= 0x020622] (__ASSUME_ACCEPT4_SYSCALL):
Define.
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This patch updates the ARM HWCAP data (both bits/hwcap.h and
dl-procinfo.[ch]) to match Linux 3.13.
* sysdeps/unix/sysv/linux/arm/bits/hwcap.h (HWCAP_ARM_VFPD32): New
macro.
(HWCAP_ARM_LPAE): Likewise.
(HWCAP_ARM_EVTSTRM): Likewise.
* sysdeps/unix/sysv/linux/arm/dl-procinfo.c (_dl_arm_cap_flags):
Add vpfd32, lpae and evtstrm.
* sysdeps/unix/sysv/linux/arm/dl-procinfo.h (_DL_HWCAP_COUNT):
Increase to 22.
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2014-02-17 David Holsgrove <david.holsgrove@xilinx.com>
* sysdeps/microblaze: Move directory from ports/sysdeps/microblaze.
* sysdeps/unix/sysv/linux/microblaze: Move directory from
ports/sysdeps/unix/sysv/linux/microblaze.
* README: Add missing listing for microblaze*-*-linux-gnu.
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
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This patch cleans up following the obsoletion of _BSD_SOURCE and
_SVID_SOURCE by combining __USE_BSD and __USE_SVID into __USE_MISC.
The only non-mechanical part of this patch is the changes to
features.h; everything else is simple substitution of __USE_MISC for
the old macros. Thus, this patch leaves obviously redundant
conditionals such as "defined __USE_MISC || defined __USE_MISC", and
does not update #endif comments where they referred to BSD or SVID in
words instead of the literal macro name. This is intended to
facilitate patch review by separating the less mechanical changes from
these purely mechanical changes into a separate patch. (I do intend
to integrate all the changes from
<https://sourceware.org/ml/libc-alpha/2013-12/msg00226.html>, which I
believe includes all the trailing comment updates, in subsequent
patches.)
Tested x86_64.
* include/features.h (__USE_BSD): Remove macro definitions.
(__USE_SVID): Likewise.
(_BSD_SOURCE): Likewise.
(_SVID_SOURCE): Likewise.
[!defined _BSD_SOURCE && !defined _SVID_SOURCE]: Remove condition
from definition of _DEFAULT_SOURCE.
[_BSD_SOURCE || _SVID_SOURCE]: Change condition to
[_DEFAULT_SOURCE].
* bits/fcntl.h [__USE_BSD]: Change condition to [__USE_MISC].
* bits/mman.h [__USE_BSD]: Likewise.
* bits/termios.h [__USE_BSD]: Likewise.
* bits/waitstatus.h [__USE_BSD]: Likewise.
* ctype/ctype.h [__USE_SVID]: Likewise.
* dirent/dirent.h [__USE_BSD]: Likewise.
* grp/grp.h [__USE_SVID]: Likewise.
[__USE_BSD]: Likewise.
* inet/netinet/igmp.h [__USE_BSD]: Likewise.
* io/fcntl.h [__USE_BSD]: Likewise.
* io/ftw.h [__USE_BSD]: Likewise.
* io/sys/stat.h [__USE_BSD]: Likewise.
* libio/bits/stdio-ldbl.h [__USE_BSD]: Likewise.
* libio/bits/stdio2.h [__USE_BSD]: Likewise.
* libio/stdio.h [__USE_SVID]: Likewise.
[__USE_BSD]: Likewise.
* math/math.h [__USE_SVID]: Likewise.
[__USE_BSD]: Likewise.
* misc/bits/syslog-ldbl.h [__USE_BSD]: Likewise.
* misc/bits/syslog.h [__USE_BSD]: Likewise.
* misc/search.h [__USE_SVID]: Likewise.
* misc/sys/mman.h [__USE_BSD]: Likewise.
* misc/sys/syslog.h [__USE_BSD]: Likewise.
* misc/sys/uio.h [__USE_BSD]: Likewise.
* posix/bits/unistd.h [__USE_BSD]: Likewise.
* posix/glob.h [__USE_BSD]: Likewise.
* posix/regex.h [__USE_BSD]: Likewise.
* posix/sys/types.h [__USE_BSD]: Likewise.
[__USE_SVID]: Likewise.
* posix/sys/utsname.h [__USE_SVID]: Likewise.
* posix/sys/wait.h [__USE_BSD]: Likewise.
[__USE_SVID]: Likewise.
* posix/unistd.h [__USE_BSD]: Likewise.
[__USE_SVID]: Likewise.
* pwd/pwd.h [__USE_SVID]: Likewise.
* resolv/netdb.h [__USE_BSD]: Likewise.
* setjmp/setjmp.h [__USE_BSD]: Likewise.
* signal/signal.h [__USE_BSD]: Likewise.
[__USE_SVID]: Likewise.
* socket/sys/socket.h [__USE_BSD]: Likewise.
* stdlib/fmtmsg.h [__USE_SVID]: Likewise.
* stdlib/stdlib.h [__USE_BSD]: Likewise.
[__USE_SVID]: Likewise.
* string/bits/string2.h [__USE_BSD]: Likewise.
[__USE_SVID]: Likewise.
* string/bits/string3.h [__USE_BSD]: Likewise.
* string/endian.h [__USE_BSD]: Likewise.
* string/string.h [__USE_SVID]: Likewise.
[__USE_BSD]: Likewise.
* string/strings.h [__USE_BSD]: Likewise.
* sysdeps/generic/netinet/ip.h [__USE_BSD]: Likewise.
* sysdeps/gnu/netinet/ip_icmp.h [__USE_BSD]: Likewise.
* sysdeps/mach/hurd/bits/fcntl.h [__USE_BSD]: Likewise.
* sysdeps/mach/hurd/bits/stat.h [__USE_BSD]: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/mman.h [__USE_BSD]: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h [__USE_BSD]:
Likewise.
* sysdeps/unix/sysv/linux/bits/fcntl-linux.h [__USE_BSD]:
Likewise.
* sysdeps/unix/sysv/linux/bits/mman-linux.h [__USE_BSD]: Likewise.
* sysdeps/unix/sysv/linux/bits/sys_errlist.h [__USE_BSD]:
Likewise.
* sysdeps/unix/sysv/linux/bits/termios.h [__USE_BSD]: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/termios.h [__USE_BSD]:
Likewise.
* sysdeps/unix/sysv/linux/netinet/if_ether.h [__USE_BSD]:
Likewise.
* sysdeps/unix/sysv/linux/netinet/if_fddi.h [__USE_BSD]: Likewise.
* sysdeps/unix/sysv/linux/netinet/if_tr.h [__USE_BSD]: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h [__USE_BSD]:
Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h [__USE_BSD]:
Likewise.
* sysdeps/x86/bits/string.h [__USE_BSD]: Likewise.
* sysvipc/sys/ipc.h [__USE_SVID]: Likewise.
* termios/termios.h [__USE_BSD]: Likewise.
* time/sys/time.h [__USE_BSD]: Likewise.
* time/time.h [__USE_BSD]: Likewise.
[__USE_SVID]: Likewise.
* sysdeps/unix/sysv/linux/hppa/bits/mman.h [__USE_BSD]: Change
condition to [__USE_MISC].
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Also fixed the following whitespace nits to satisfy the push:
sysdeps/alpha/alphaev6/memset.S:142: space before tab in indent.
sysdeps/alpha/configure:1: new blank line at EOF.
sysdeps/alpha/fpu/e_sqrt.c:126: space before tab in indent.
sysdeps/alpha/preconfigure:1: new blank line at EOF.
sysdeps/unix/sysv/linux/alpha/syscalls.list:1: new blank line at EOF.
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This patch moves the AArch64 port to the main sysdeps hierarchy. The
move is essentially:
git mv ports/sysdeps/aarch64 sysdeps/aarch64
git mv ports/sysdeps/unix/sysv/linux/aarch64 sysdeps/unix/sysv/linux/aarch64
The README is updated and I've updated ChangeLog.aarch64 along the
lines of the ARM move. The AArch64 build has been tested to confirm
that there were no changes in objdump -dr output or the shared
objects.
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I've moved the MIPS port from ports to the main sysdeps hierarchy.
Beyond the README update, the move of the files was simply
git mv ports/sysdeps/mips sysdeps/mips
git mv ports/sysdeps/unix/mips sysdeps/unix/mips
git mv ports/sysdeps/unix/sysv/linux/mips sysdeps/unix/sysv/linux/mips
and in addition to the ChangeLog entries here, I put a note at the top
of ports/ChangeLog.mips similar to those in other files.
Tested that disassembly of installed shared libraries for mips is the
same before and after this patch (except for ld.so where paths in
assertions are involved, as for arm).
* sysdeps/mips: Move directory from ports/sysdeps/mips.
* sysdeps/unix/mips: Move directory from ports/sysdeps/unix/mips.
* sysdeps/unix/sysv/linux/mips: Move directory from
ports/sysdeps/unix/sysv/linux/mips.
* README: Update listing for mips-*-linux-gnu and
mips64-*-linux-gnu.
* sysdeps/mips: Move directory to ../sysdeps/mips.
* sysdeps/unix/mips: Move directory to ../sysdeps/unix/mips.
* sysdeps/unix/sysv/linux/mips: Move directory to
../sysdeps/unix/sysv/linux/mips.
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I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy,
along with the linux-generic ports infrastructure. Beyond the README
update, the move was just
git mv ports/sysdeps/tile sysdeps/tile
git mv ports/sysdeps/unix/sysv/linux/tile \
sysdeps/unix/sysv/linux/tile
git mv ports/sysdeps/unix/sysv/linux/generic \
sysdeps/unix/sysv/linux/generic
I updated the relevant ChangeLogs along the lines of the ARM move
in commit c6bfe5c4d75 and tested the 64-bit tilegx build to confirm that
there were no changes in "objdump -dr" output in the shared objects.
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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This pulls in the latest defines for {g,s}etsockopt.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Import the current list of defines available in the kernel headers.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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I've moved the ARM port from ports to the main sysdeps hierarchy.
Beyond the README update, the move of the files was simply
git mv ports/sysdeps/arm sysdeps/arm
git mv ports/sysdeps/unix/arm sysdeps/unix/arm
git mv ports/sysdeps/unix/sysv/linux/arm sysdeps/unix/sysv/linux/arm
and in addition to the ChangeLog entries here, I put a note at the top
of ports/ChangeLog.arm similar to that at the top of
ChangeLog.powerpc. There is deliberately no NEWS change, as I think
it makes the most sense to put in a general note above all ports
having moved if we can achieve that for 2.20.
Tested that disassembly of installed shared libraries for arm is the
same before and after this patch, except for data (not instructions)
in ld.so (there are assertions in sysdeps/arm/dl-machine.h, and the
path by which that file is found, and so by which it appears in the
assertion message, changes as a result of the move).
* sysdeps/arm: Move directory from ports/sysdeps/arm.
* sysdeps/unix/arm: Move directory from ports/sysdeps/unix/arm.
* sysdeps/unix/sysv/linux/arm: Move directory from
ports/sysdeps/unix/sysv/linux/arm.
* README: Update listing for arm-*-linux-gnueabi.
ports/ChangeLog.arm:
* sysdeps/arm: Move directory to ../sysdeps/arm.
* sysdeps/unix/arm: Move directory to ../sysdeps.arm.
* sysdeps/unix/sysv/linux/arm: Move directory to
../sysdeps/unix/sysv/linux/arm.
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This reverts commit 69a17d9d245dc3551792e95e1823cc2d877592f3.
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Use "was" not "were."
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Support for /proc/self/task/$tid/comm as added in Linux 2.6.33,
therefore since the test tst-setgetname relies on this functionality
to operate we must skip the test in kernels < 2.6.33. We wrap the
checks with __ASSUME_PROC_PID_TASK_COMM such that in the future when
we move arch_minimum_kernel to 2.6.33 we can remove this code.
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This patch is the abifiles for powerpc64le based on GLIBC 2.17.
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The IFUNC selector for gettimeofday runs before _libc_vdso_platform_setup where
__vdso_gettimeofday is set. The selector then sets __gettimeofday (the internal
version used within GLIBC) to use the system call version instead of the vDSO one.
This patch changes the check if vDSO is available to get its value directly
instead of rely on __vdso_gettimeofday.
This patch changes it by getting the vDSO value directly.
It fixes BZ#16431.
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This patches fixes BZ#16430 by setting a different symbol for internal
GLIBC calls that points to ifunc resolvers. For PPC32, if the symbol
is defined as hidden (which is the case for gettimeofday and time) the
compiler will create local branches (symbol@local) and linker will not
create PLT calls (required for IFUNC). This will leads to internal symbol
calling the IFUNC resolver instead of the resolved symbol.
For PPC64 this behavior does not occur because a call to a function in
another translation unit might use a different toc pointer thus requiring
a PLT call.
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