Commit Graph

30020 Commits

Author SHA1 Message Date
Adhemerval Zanella
91f3b75f47 Improve generic strspn performance
As for strcspn, this patch improves strspn performance using a much
faster algorithm.  It first constructs a 256-entry table based on
the accept string and then uses it as a lookup table for the
input string.  As for strcspn optimization, it is generally at least
10 times faster than the existing implementation on bench-strspn
on a few AArch64 implementations.

Also the string/bits/string2.h inlines make no longer sense, as current
implementation will already implement most of the optimizations.

Tested on x86_64, i686, and aarch64.

	* string/strspn.c (strcspn): Rewrite function.
	* string/bits/string2.h (strspn): Use __builtin_strcspn.
	(__strspn_c1): Remove inline function.
	(__strspn_c2): Likewise.
	(__strspn_c3): Likewise.
	* string/string-inlines.c
	[SHLIB_COMPAT(libc, GLIBC_2_1_1, GLIBC_2_24)] (__strspn_c1): Add
	compatibility symbol.
	[SHLIB_COMPAT(libc, GLIBC_2_1_1, GLIBC_2_24)] (__strspn_c2):
	Likewise.
	[SHLIB_COMPAT(libc, GLIBC_2_1_1, GLIBC_2_24)] (__strspn_c3):
	Likewise.
2016-04-01 10:44:44 -03:00
Wilco Dijkstra
d3496c9f4f Improve generic strcspn performance
Improve strcspn performance using a much faster algorithm.  It is kept simple
so it works well on most targets.  It is generally at least 10 times faster
than the existing implementation on bench-strcspn on a few AArch64
implementations, and for some tests 100 times as fast (repeatedly calling
strchr on a small string is extremely slow...).

In fact the string/bits/string2.h inlines make no longer sense, as GCC
already uses strlen if reject is an empty string, strchrnul is 5 times as
fast as __strcspn_c1, while __strcspn_c2 and __strcspn_c3 are slower than
the strcspn main loop for large strings (though reject length 2-4 could be
special cased in the future to gain even more performance).

Tested on x86_64, i686, and aarch64.

	* string/Version (libc): Add GLIBC_2.24.
	* string/strcspn.c (strcspn): Rewrite function.
	* string/bits/string2.h (strcspn): Use __builtin_strcspn.
	(__strcspn_c1): Remove inline function.
	(__strcspn_c2): Likewise.
	(__strcspn_c3): Likewise.
	* string/string-inline.c
	[SHLIB_COMPAT(libc, GLIBC_2_1_1, GLIBC_2_24)] (__strcspn_c1): Add
	compatibility symbol.
	[SHLIB_COMPAT(libc, GLIBC_2_1_1, GLIBC_2_24)] (__strcspn_c2):
	Likewise.
	[SHLIB_COMPAT(libc, GLIBC_2_1_1, GLIBC_2_24)] (__strcspn_c3):
	Likewise.
	* sysdeps/i386/string-inlines.c: Include generic string-inlines.c.
2016-04-01 10:44:40 -03:00
Stefan Liebler
d8a012c5c9 S390: Use ahi instead of aghi in 32bit _dl_runtime_resolve.
This patch uses ahi instead of aghi in 32bit _dl_runtime_resolve
to adjust the stack pointer. This is no functional change,
but a cosmetic one.

ChangeLog:

	* sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_resolve):
	Use ahi instead of aghi to adjust stack pointer.
2016-04-01 10:42:54 +02:00
Paul E. Murphy
37a4c70bd4 Increase internal precision of ldbl-128ibm decimal printf [BZ #19853]
When the signs differ, the precision of the conversion sometimes
drops below 106 bits.  This strategy is identical to the
hexadecimal variant.

I've refactored tst-sprintf3 to enable testing a value with more
than 30 significant digits in order to demonstrate this failure
and its solution.

Additionally, this implicitly fixes a typo in the shift
quantities when subtracting from the high mantissa to compute
the difference.
2016-03-31 12:14:33 -05:00
H.J. Lu
830566307f Add x86-64 memset with unaligned store and rep stosb
Implement x86-64 memset with unaligned store and rep movsb.  Support
16-byte, 32-byte and 64-byte vector register sizes.  A single file
provides 2 implementations of memset, one with rep stosb and the other
without rep stosb.  They share the same codes when size is between 2
times of vector register size and REP_STOSB_THRESHOLD which defaults
to 2KB.

Key features:

1. Use overlapping store to avoid branch.
2. For size <= 4 times of vector register size, fully unroll the loop.
3. For size > 4 times of vector register size, store 4 times of vector
register size at a time.

	[BZ #19881]
	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
	memset-sse2-unaligned-erms, memset-avx2-unaligned-erms and
	memset-avx512-unaligned-erms.
	* sysdeps/x86_64/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Test __memset_chk_sse2_unaligned,
	__memset_chk_sse2_unaligned_erms, __memset_chk_avx2_unaligned,
	__memset_chk_avx2_unaligned_erms, __memset_chk_avx512_unaligned,
	__memset_chk_avx512_unaligned_erms, __memset_sse2_unaligned,
	__memset_sse2_unaligned_erms, __memset_erms,
	__memset_avx2_unaligned, __memset_avx2_unaligned_erms,
	__memset_avx512_unaligned_erms and __memset_avx512_unaligned.
	* sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms.S: New
	file.
	* sysdeps/x86_64/multiarch/memset-avx512-unaligned-erms.S:
	Likewise.
	* sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S:
	Likewise.
	* sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S:
	Likewise.
2016-03-31 10:06:07 -07:00
H.J. Lu
88b57b8ed4 Add x86-64 memmove with unaligned load/store and rep movsb
Implement x86-64 memmove with unaligned load/store and rep movsb.
Support 16-byte, 32-byte and 64-byte vector register sizes.  When
size <= 8 times of vector register size, there is no check for
address overlap bewteen source and destination.  Since overhead for
overlap check is small when size > 8 times of vector register size,
memcpy is an alias of memmove.

A single file provides 2 implementations of memmove, one with rep movsb
and the other without rep movsb.  They share the same codes when size is
between 2 times of vector register size and REP_MOVSB_THRESHOLD which
is 2KB for 16-byte vector register size and scaled up by large vector
register size.

Key features:

1. Use overlapping load and store to avoid branch.
2. For size <= 8 times of vector register size, load  all sources into
registers and store them together.
3. If there is no address overlap bewteen source and destination, copy
from both ends with 4 times of vector register size at a time.
4. If address of destination > address of source, backward copy 8 times
of vector register size at a time.
5. Otherwise, forward copy 8 times of vector register size at a time.
6. Use rep movsb only for forward copy.  Avoid slow backward rep movsb
by fallbacking to backward copy 8 times of vector register size at a
time.
7. Skip when address of destination == address of source.

	[BZ #19776]
	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
	memmove-sse2-unaligned-erms, memmove-avx-unaligned-erms and
	memmove-avx512-unaligned-erms.
	* sysdeps/x86_64/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Test
	__memmove_chk_avx512_unaligned_2,
	__memmove_chk_avx512_unaligned_erms,
	__memmove_chk_avx_unaligned_2, __memmove_chk_avx_unaligned_erms,
	__memmove_chk_sse2_unaligned_2,
	__memmove_chk_sse2_unaligned_erms, __memmove_avx_unaligned_2,
	__memmove_avx_unaligned_erms, __memmove_avx512_unaligned_2,
	__memmove_avx512_unaligned_erms, __memmove_erms,
	__memmove_sse2_unaligned_2, __memmove_sse2_unaligned_erms,
	__memcpy_chk_avx512_unaligned_2,
	__memcpy_chk_avx512_unaligned_erms,
	__memcpy_chk_avx_unaligned_2, __memcpy_chk_avx_unaligned_erms,
	__memcpy_chk_sse2_unaligned_2, __memcpy_chk_sse2_unaligned_erms,
	__memcpy_avx_unaligned_2, __memcpy_avx_unaligned_erms,
	__memcpy_avx512_unaligned_2, __memcpy_avx512_unaligned_erms,
	__memcpy_sse2_unaligned_2, __memcpy_sse2_unaligned_erms,
	__memcpy_erms, __mempcpy_chk_avx512_unaligned_2,
	__mempcpy_chk_avx512_unaligned_erms,
	__mempcpy_chk_avx_unaligned_2, __mempcpy_chk_avx_unaligned_erms,
	__mempcpy_chk_sse2_unaligned_2, __mempcpy_chk_sse2_unaligned_erms,
	__mempcpy_avx512_unaligned_2, __mempcpy_avx512_unaligned_erms,
	__mempcpy_avx_unaligned_2, __mempcpy_avx_unaligned_erms,
	__mempcpy_sse2_unaligned_2, __mempcpy_sse2_unaligned_erms and
	__mempcpy_erms.
	* sysdeps/x86_64/multiarch/memmove-avx-unaligned-erms.S: New
	file.
	* sysdeps/x86_64/multiarch/memmove-avx512-unaligned-erms.S:
	Likwise.
	* sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S:
	Likwise.
	* sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:
	Likwise.
2016-03-31 10:04:40 -07:00
Stefan Liebler
5cdd1989d1 S390: Extend structs La_s390_regs / La_s390_retval with vector-registers.
Starting with z13, vector registers can also occur as argument registers.
Thus the passed input/output register structs for
la_s390_[32|64]_gnu_plt[enter|exit] functions should reflect those new
registers. This patch extends these structs La_s390_regs and La_s390_retval
and adjusts _dl_runtime_profile() to handle those fields in case of
running on a z13 machine.

ChangeLog:

	* sysdeps/s390/bits/link.h: (La_s390_vr) New typedef.
	(La_s390_32_regs): Append vector register lr_v24-lr_v31.
	(La_s390_64_regs): Likewise.
	(La_s390_32_retval): Append vector register lrv_v24.
	(La_s390_64_retval): Likeweise.
	* sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_profile):
	Handle extended structs La_s390_32_regs and La_s390_32_retval.
	* sysdeps/s390/s390-64/dl-trampoline.h (_dl_runtime_profile):
	Handle extended structs La_s390_64_regs and La_s390_64_retval.
2016-03-31 17:37:16 +02:00
Stefan Liebler
4603c51ef7 S390: Save and restore fprs/vrs while resolving symbols.
On s390, no fpr/vrs were saved while resolving a symbol
via _dl_runtime_resolve/_dl_runtime_profile.

According to the abi, the fpr-arguments are defined as call clobbered.
In leaf-functions, gcc 4.9 and newer can use fprs for saving/restoring gprs
instead of saving them to the stack.
If gcc do this in one of the resolver-functions, then the floating point
arguments of a library-function are invalid for the first library-function-call.
Thus, this patch saves/restores the fprs around the resolving code.

The same could occur for vector registers. Furthermore an ifunc-resolver
could also clobber the vector/floating point argument registers.
Thus this patch provides the further variants _dl_runtime_resolve_vx/
_dl_runtime_profile_vx, which are used if the kernel claims, that
we run on a machine with vector registers.

Furthermore, if _dl_runtime_profile calls _dl_call_pltexit,
the pointers to inregs-/outregs-structs were setup invalid.
Now they point to the correct location in the stack-frame.
Before branching back to the caller, the return values are now
restored instead of containing the return values of the
_dl_call_pltexit() call.
On s390-32, an endless loop occurs if _dl_call_pltexit() should be called.
Now, this code-path branches to this function instead of just after the
preceding basr-instruction.

ChangeLog:

	* sysdeps/s390/s390-32/dl-trampoline.S: Include dl-trampoline.h twice
	to create a non-vector/vector version for _dl_runtime_resolve and
	_dl_runtime_profile. Move implementation to ...
	* sysdeps/s390/s390-32/dl-trampoline.h: ... here.
	(_dl_runtime_resolve) Save and restore fpr/vrs.
	(_dl_runtime_profile) Save and restore vrs and fix some issues
	if _dl_call_pltexit is called.
	* sysdeps/s390/s390-32/dl-machine.h (elf_machine_runtime_setup):
	Choose the correct resolver function if running on a machine with vx.
	* sysdeps/s390/s390-64/dl-trampoline.S: Include dl-trampoline.h twice
	to create a non-vector/vector version for _dl_runtime_resolve and
	_dl_runtime_profile. Move implementation to ...
	* sysdeps/s390/s390-64/dl-trampoline.h: ... here.
	(_dl_runtime_resolve) Save and restore fpr/vrs.
	(_dl_runtime_profile) Save and restore vrs and fix some issues
	* sysdeps/s390/s390-64/dl-machine.h: (elf_machine_runtime_setup):
	Choose the correct resolver function if running on a machine with vx.
2016-03-31 17:37:16 +02:00
Adhemerval Zanella
e91bd74658 Fix tst-dlsym-error build
This patch fixes the new test tst-dlsym-error build on aarch64
(and possible other architectures as well) due missing strchrnul
definition.

	* elf/tst-dlsym-error.c: Include <string.h> for strchrnul.
2016-03-31 10:51:51 -03:00
Florian Weimer
7d45c163d0 Report dlsym, dlvsym lookup errors using dlerror [BZ #19509]
* elf/dl-lookup.c (_dl_lookup_symbol_x): Report error even if
	skip_map != NULL.
	* elf/tst-dlsym-error.c: New file.
	* elf/Makefile (tests): Add tst-dlsym-error.
	(tst-dlsym-error): Link against libdl.
2016-03-31 11:26:55 +02:00
Joseph Myers
258ec8abc1 [microblaze] Remove __ASSUME_FUTIMESAT.
MicroBlaze has a special version of futimesat.c because it gained the
futimesat syscall later than other non-asm-generic architectures.  Now
the minimum kernel is recent enough that this syscall can always be
assumed to be present for MicroBlaze, so this patch removes the
special version and the __ASSUME_FUTIMESAT macro, resulting in the
sysdeps/unix/sysv/linux/futimesat.c version being used.

Untested.

	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_FUTIMESAT): Remove macro.
	* sysdeps/unix/sysv/linux/microblaze/futimesat.c: Remove file.
2016-03-29 22:13:36 +00:00
Florian Weimer
317b199b4a CVE-2016-3075: Stack overflow in _nss_dns_getnetbyname_r [BZ #19879]
The defensive copy is not needed because the name may not alias the
output buffer.
2016-03-29 12:57:56 +02:00
Florian Weimer
a6033052d0 nss_db: Propagate ERANGE error if parse_line fails [BZ #19837]
Reproducer (needs to run as root):

perl -e \
  'print "large999:" . join(",", map {"user$_"} (1 .. 135))."\n"' \
  >> /etc/group
cd /var/db
make
getent -s db group

After the fix, the last command should list the "large" group.

The magic number 135 has been chosen so that the line is shorter than
1024 bytes, but the pointers required to encode the member array will
cross the threshold, triggering the bug.
2016-03-29 11:27:32 +02:00
H.J. Lu
0791f91dff Initial Enhanced REP MOVSB/STOSB (ERMS) support
The newer Intel processors support Enhanced REP MOVSB/STOSB (ERMS) which
has a feature bit in CPUID.  This patch adds the Enhanced REP MOVSB/STOSB
(ERMS) bit to x86 cpu-features.

	* sysdeps/x86/cpu-features.h (bit_cpu_ERMS): New.
	(index_cpu_ERMS): Likewise.
	(reg_ERMS): Likewise.
2016-03-28 19:23:31 -07:00
Aurelien Jarno
9ff9351d02 Synchronize <sys/personality.h> with kernel headers
<sys/personality.h> is out of sync with kernel headers, missing the
UNAME26, FDPIC_FUNCPTRS and PER_LINUX_FDPIC entries. Fix that.

Changelog:
	* sysdeps/unix/sysv/linux/sys/personality.h (UNAME26, FDPIC_FUNCPTRS,
	PER_LINUX_FDPIC): Add.
2016-03-28 22:42:52 +02:00
H.J. Lu
064f01b10b Make __memcpy_avx512_no_vzeroupper an alias
Since x86-64 memcpy-avx512-no-vzeroupper.S implements memmove, make
__memcpy_avx512_no_vzeroupper an alias of __memmove_avx512_no_vzeroupper
to reduce code size of libc.so.

	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove
	memcpy-avx512-no-vzeroupper.
	* sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S: Renamed
	to ...
	* sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S: This.
	(MEMCPY): Don't define.
	(MEMCPY_CHK): Likewise.
	(MEMPCPY): Likewise.
	(MEMPCPY_CHK): Likewise.
	(MEMPCPY_CHK): Renamed to ...
	(__mempcpy_chk_avx512_no_vzeroupper): This.
	(MEMPCPY_CHK): Renamed to ...
	(__mempcpy_chk_avx512_no_vzeroupper): This.
	(MEMCPY_CHK): Renamed to ...
	(__memmove_chk_avx512_no_vzeroupper): This.
	(MEMCPY): Renamed to ...
	(__memmove_avx512_no_vzeroupper): This.
	(__memcpy_avx512_no_vzeroupper): New alias.
	(__memcpy_chk_avx512_no_vzeroupper): Likewise.
2016-03-28 13:16:22 -07:00
H.J. Lu
c365e615f7 Implement x86-64 multiarch mempcpy in memcpy
Implement x86-64 multiarch mempcpy in memcpy to share most of code.  It
reduces code size of libc.so.

	[BZ #18858]
	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove
	mempcpy-ssse3, mempcpy-ssse3-back, mempcpy-avx-unaligned
	and mempcpy-avx512-no-vzeroupper.
	* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S (MEMPCPY_CHK):
	New.
	(MEMPCPY): Likewise.
	* sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S
	(MEMPCPY_CHK): New.
	(MEMPCPY): Likewise.
	* sysdeps/x86_64/multiarch/memcpy-ssse3-back.S (MEMPCPY_CHK): New.
	(MEMPCPY): Likewise.
	* sysdeps/x86_64/multiarch/memcpy-ssse3.S (MEMPCPY_CHK): New.
	(MEMPCPY): Likewise.
	* sysdeps/x86_64/multiarch/mempcpy-avx-unaligned.S: Removed.
	* sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S:
	Likewise.
	* sysdeps/x86_64/multiarch/mempcpy-ssse3-back.S: Likewise.
	* sysdeps/x86_64/multiarch/mempcpy-ssse3.S: Likewise.
2016-03-28 13:13:51 -07:00
H.J. Lu
e41b395523 [x86] Add a feature bit: Fast_Unaligned_Copy
On AMD processors, memcpy optimized with unaligned SSE load is
slower than emcpy optimized with aligned SSSE3 while other string
functions are faster with unaligned SSE load.  A feature bit,
Fast_Unaligned_Copy, is added to select memcpy optimized with
unaligned SSE load.

	[BZ #19583]
	* sysdeps/x86/cpu-features.c (init_cpu_features): Set
	Fast_Unaligned_Copy with Fast_Unaligned_Load for Intel
	processors.  Set Fast_Copy_Backward for AMD Excavator
	processors.
	* sysdeps/x86/cpu-features.h (bit_arch_Fast_Unaligned_Copy):
	New.
	(index_arch_Fast_Unaligned_Copy): Likewise.
	* sysdeps/x86_64/multiarch/memcpy.S (__new_memcpy): Check
	Fast_Unaligned_Copy instead of Fast_Unaligned_Load.
2016-03-28 04:40:03 -07:00
Florian Weimer
b66d837bb5 resolv: Always set *resplen2 out parameter in send_dg [BZ #19791]
Since commit 44d20bca52 (Implement
second fallback mode for DNS requests), there is a code path which
returns early, before *resplen2 is initialized.  This happens if the
name server address is immediately recognized as invalid (because of
lack of protocol support, or if it is a broadcast address such
255.255.255.255, or another invalid address).

If this happens and *resplen2 was non-zero (which is the case if a
previous query resulted in a failure), __libc_res_nquery would reuse
an existing second answer buffer.  This answer has been previously
identified as unusable (for example, it could be an NXDOMAIN
response).  Due to the presence of a second answer, no name server
switching will occur.  The result is a name resolution failure,
although a successful resolution would have been possible if name
servers have been switched and queries had proceeded along the search
path.

The above paragraph still simplifies the situation.  Before glibc
2.23, if the second answer needed malloc, the stub resolver would
still attempt to reuse the second answer, but this is not possible
because __libc_res_nsearch has freed it, after the unsuccessful call
to __libc_res_nquerydomain, and set the buffer pointer to NULL.  This
eventually leads to an assertion failure in __libc_res_nquery:

	/* Make sure both hp and hp2 are defined */
	assert((hp != NULL) && (hp2 != NULL));

If assertions are disabled, the consequence is a NULL pointer
dereference on the next line.

Starting with glibc 2.23, as a result of commit
e9db92d3ac (CVE-2015-7547: getaddrinfo()
stack-based buffer overflow (Bug 18665)), the second answer is always
allocated with malloc.  This means that the assertion failure happens
with small responses as well because there is no buffer to reuse, as
soon as there is a name resolution failure which triggers a search for
an answer along the search path.

This commit addresses the issue by ensuring that *resplen2 is
initialized before the send_dg function returns.

This commit also addresses a bug where an invalid second reply is
incorrectly returned as a valid to the caller.
2016-03-25 11:49:52 +01:00
Florian Weimer
f327f5b47b tst-audit10: Fix compilation on compilers without bit_AVX512F [BZ #19860]
[BZ# 19860]
	* sysdeps/x86_64/tst-audit10.c (avx512_enabled): Always return
	zero if the compiler does not provide the AVX512F bit.
2016-03-25 11:11:42 +01:00
Joseph Myers
c898991d8b Fix x86_64 / x86 powl inaccuracy for integer exponents (bug 19848).
Bug 19848 reports cases where powl on x86 / x86_64 has error
accumulation, for small integer exponents, larger than permitted by
glibc's accuracy goals, at least in some rounding modes.  This patch
further restricts the exponent range for which the
small-integer-exponent logic is used to limit the possible error
accumulation.

Tested for x86_64 and x86 and ulps updated accordingly.

	[BZ #19848]
	* sysdeps/i386/fpu/e_powl.S (p3): Rename to p2 and change value
	from 8 to 4.
	(__ieee754_powl): Compare integer exponent against 4 not 8.
	* sysdeps/x86_64/fpu/e_powl.S (p3): Rename to p2 and change value
	from 8 to 4.
	(__ieee754_powl): Compare integer exponent against 4 not 8.
	* math/auto-libm-test-in: Add more tests of pow.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2016-03-24 01:32:52 +00:00
Aurelien Jarno
7e1ff08c26 Assume __NR_utimensat is always defined
With the 2.6.32 minimum kernel on x86 and 3.2 on other architectures,
__NR_utimensat is always defined.

Changelog:
	* sysdeps/unix/sysv/linux/futimens.c (futimens) [__NR_utimensat]:
	Make code unconditional.
	[!__NR_utimensat]: Remove conditional code.
	* sysdeps/unix/sysv/linux/lutimes.c (lutimes) [__NR_utimensat]:
	Make code unconditional.
	[!__NR_utimensat]: Remove conditional code.
	* sysdeps/unix/sysv/linux/utimensat.c (utimensat) [__NR_utimensat]:
	Make code unconditional.
	[!__NR_utimensat]: Remove conditional code.
2016-03-23 23:35:08 +01:00
Aurelien Jarno
16d94f67e5 Assume __NR_openat is always defined
With the 2.6.32 minimum kernel on x86 and 3.2 on other architectures,
__NR_openat is always defined.

Changelog:
	* sysdeps/unix/sysv/linux/dl-openat64.c (openat64) [__NR_openat]:
	Make code unconditional.
2016-03-23 23:35:08 +01:00
Nick Alcock
7a25d6a84d x86, pthread_cond_*wait: Do not depend on %eax not being clobbered
The x86-specific versions of both pthread_cond_wait and
pthread_cond_timedwait have (in their fall-back-to-futex-wait slow
paths) calls to __pthread_mutex_cond_lock_adjust followed by
__pthread_mutex_unlock_usercnt, which load the parameters before the
first call but then assume that the first parameter, in %eax, will
survive unaffected.  This happens to have been true before now, but %eax
is a call-clobbered register, and this assumption is not safe: it could
change at any time, at GCC's whim, and indeed the stack-protector canary
checking code clobbers %eax while checking that the canary is
uncorrupted.

So reload %eax before calling __pthread_mutex_unlock_usercnt.  (Do this
unconditionally, even when stack-protection is not in use, because it's
the right thing to do, it's a slow path, and anything else is dicing
with death.)

	* sysdeps/unix/sysv/linux/i386/pthread_cond_timedwait.S: Reload
	call-clobbered %eax on retry path.
	* sysdeps/unix/sysv/linux/i386/pthread_cond_wait.S: Likewise.
2016-03-23 13:40:14 +01:00
H.J. Lu
3c9a4cd16c Don't set %rcx twice before "rep movsb"
* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S (MEMCPY):
	Don't set %rcx twice before "rep movsb".
2016-03-22 08:36:16 -07:00
H.J. Lu
f781a9e961 Set index_arch_AVX_Fast_Unaligned_Load only for Intel processors
Since only Intel processors with AVX2 have fast unaligned load, we
should set index_arch_AVX_Fast_Unaligned_Load only for Intel processors.

Move AVX, AVX2, AVX512, FMA and FMA4 detection into get_common_indeces
and call get_common_indeces for other processors.

Add CPU_FEATURES_CPU_P and CPU_FEATURES_ARCH_P to aoid loading
GLRO(dl_x86_cpu_features) in cpu-features.c.

	[BZ #19583]
	* sysdeps/x86/cpu-features.c (get_common_indeces): Remove
	inline.  Check family before setting family, model and
	extended_model.  Set AVX, AVX2, AVX512, FMA and FMA4 usable
	bits here.
	(init_cpu_features): Replace HAS_CPU_FEATURE and
	HAS_ARCH_FEATURE with CPU_FEATURES_CPU_P and
	CPU_FEATURES_ARCH_P.  Set index_arch_AVX_Fast_Unaligned_Load
	for Intel processors with usable AVX2.  Call get_common_indeces
	for other processors with family == NULL.
	* sysdeps/x86/cpu-features.h (CPU_FEATURES_CPU_P): New macro.
	(CPU_FEATURES_ARCH_P): Likewise.
	(HAS_CPU_FEATURE): Use CPU_FEATURES_CPU_P.
	(HAS_ARCH_FEATURE): Use CPU_FEATURES_ARCH_P.
2016-03-22 07:47:20 -07:00
Samuel Thibault
b87e41378b Fix malloc threaded tests link on non-Linux
* malloc/Makefile ($(objpfx)tst-malloc-backtrace,
	$(objpfx)tst-malloc-thread-exit, $(objpfx)tst-malloc-thread-fail): Use
	$(shared-thread-library) instead of hardcoding the path to libpthread.
2016-03-22 09:58:48 +01:00
Joseph Myers
37ad347359 Remove __ASSUME_GETDENTS64_SYSCALL.
This patch removes the __ASSUME_GETDENTS64_SYSCALL macro, as its
definition is constant given the new kernel version requirements (and
was constant anyway before those requirements except for MIPS n32).

Note that the "#ifdef __NR_getdents64" conditional *is* still needed,
because MIPS n64 only has the getdents syscall (being a 64-bit ABI,
that syscall is 64-bit; the difference between the two on 64-bit
architectures is where d_type goes).  If MIPS n64 were to gain the
getdents64 syscall and we wanted to use it conditionally on the kernel
version at runtime we'd have to revert this patch, but I think that's
unlikely (and in any case, we could follow the simpler approach of
undefining __NR_getdents64 if the syscall can't be assumed, just like
we do for accept4 / recvmmsg / sendmmsg syscalls on architectures
where socketcall support came first).

Most of the getdents.c changes are reindentation.

Tested for x86_64 and x86 that installed stripped shared libraries are
unchanged by the patch.

	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_GETDENTS64_SYSCALL): Remove macro.
	* sysdeps/unix/sysv/linux/getdents.c
	[!__ASSUME_GETDENTS64_SYSCALL]: Remove conditional code.
	[!have_no_getdents64_defined]: Likewise.
	(__GETDENTS): Remove __have_no_getdents64 conditional.
2016-03-22 00:32:20 +00:00
Joseph Myers
238d60ac9b Remove __ASSUME_SIGNALFD4.
Current Linux kernel version requirements mean the signalfd4 syscall
can always be assumed to be available.  This patch removes
__ASSUME_SIGNALFD4 and associated conditionals.

Tested for x86_64 and x86 that installed stripped shared libraries are
unchanged by the patch.

	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_SIGNALFD4):
	Remove macro.
	* sysdeps/unix/sysv/linux/signalfd.c: Do not include
	<kernel-features.h>.
	(signalfd) [__NR_signalfd4]: Make code unconditional.
	(signalfd) [!__ASSUME_SIGNALFD4]: Remove conditional code.
2016-03-21 16:30:05 +00:00
Adhemerval Zanella
67b23376fb posix: Fix posix_spawn implict check style
This patch fixes the implicit check style add in 2a69f853c for the
general convention one.

Checked on x86_64.

	* sysdeps/unix/sysv/linux/spawni.c (__spawnix): Fix implict checks
	style.
2016-03-21 12:12:26 -03:00
H.J. Lu
893e371b2f Use JUMPTARGET in x86-64 pthread
When PLT may be used, JUMPTARGET should be used instead calling the
function directly.

	* sysdeps/unix/sysv/linux/x86_64/cancellation.S
	(__pthread_enable_asynccancel): Use JUMPTARGET to call
	__pthread_unwind.
	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
	(__condvar_cleanup2): Use JUMPTARGET to call _Unwind_Resume.
	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
	(__condvar_cleanup1): Likewise.
2016-03-21 06:51:05 -07:00
Mike Frysinger
a4cea54b12 localedata: standardize copyright/license information [BZ #11213]
Use the language from the FSF in all locale files to disclaim any
license/copyright on locale data.

See https://sourceware.org/ml/libc-locales/2013-q1/msg00048.html
2016-03-21 02:29:56 -04:00
Dylan Alex Simon
f9378ac377 math: don't clobber old libm.so on install [BZ #19822]
When installing glibc (w/mathvec enabled) in-place on a system with
a glibc w/out mathvec enabled, the install will clobber the existing
libm.so (e.g., /lib64/libm-2.21.so) with a linker script.  This is
because libm.so is a symlink to libm.so.6 which is a symlink to the
final libm-2.21.so file.  When the makefile writes the linker script
directly to libm.so, it gets clobbered.

The simple patch below to math/Makefile fixes this.  It is based on
the nptl Makefile, which does exactly the same thing in a safer way.
2016-03-21 02:07:51 -04:00
Mike Frysinger
6bc81cf205 localedata: standardize first few lines
Purely a style touchup to make sure the headers all look the same.
2016-03-21 02:00:09 -04:00
Adhemerval Zanella
2a69f853c0 posix: Fix posix_spawn invalid memory access
Current Linux posix_spawn spawn do not test if the pid argument is
valid before trying to update it for success case.  This patch fixes
it.

Tested on x86_64 and i686.

	* sysdeps/unix/sysv/linux/spawni.c (__spawnix): Fix invalid memory
	access where posix_spawn success and pid argument is null.
	* posix/tst-spawn.c (do_test): Add posix_spawn null pid argument for
	success case.
2016-03-20 18:17:52 -03:00
Samuel Thibault
0e8e593d73 hurd: Add c++-types expected result
* sysdeps/mach/hurd/i386/c++-types.data: New file.
2016-03-20 22:16:34 +01:00
Samuel Thibault
4d10ceb2b2 hurd: Allow inlining IO locks
* sysdeps/mach/hurd/libc-lock.h (_IO_lock_inexpensive): Define to 1.
2016-03-20 22:12:06 +01:00
Samuel Thibault
d2129ad457 hurd: Do not hide rtld symbols which need to be preempted
* sysdeps/generic/dl-fcntl.h: New file, adds attribute_hidden to __open
	and __fcntl.
	* sysdeps/mach/hurd/dl-fcntl.h: New file, adds attribute_hidden to
	__fcntl only.
	* include/fcntl.h [IS_IN (rtld)]: Include <dl-fcntl.h> instead of
	adding attribute_hidden to __open and __fcntl.
2016-03-20 19:51:42 +01:00
Samuel Thibault
c775104ac6 Fix mach-syscalls.mk build
* mach/Makefile ($(objpfx)mach-syscalls.mk): Depend on libc-modules.h.
2016-03-20 19:50:58 +01:00
Samuel Thibault
fe43d0f464 hurd: Break errnos.d / libc-modules.h dependency loop
Generating errnos.d does not actually need libc-modules.h.

* sysdeps/mach/hurd/Makefile ($(common-objpfx)errnos.d): Strip
"-include $(common-objpfx)libc-modules.h" from CPPFLAGS, and do not
depend on libc-modules.h,
2016-03-20 16:44:44 +01:00
Joseph Myers
a64e3aadbf Remove __ASSUME_EVENTFD2, move eventfd to syscalls.list.
Given current Linux kernel version requirements, we can assume the
presence of the eventfd2 syscall.  This means that __ASSUME_EVENTFD2
can be removed, and a syscalls.list entry suffices for eventfd instead
of needing a .c file.  This patch implements those changes.

Tested for x86_64 and x86 (not that that means much, given the lack of
testsuite coverage for eventfd).

	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_EVENTFD2):
	Remove macro.
	* sysdeps/unix/sysv/linux/eventfd.c: Remove file.
	* sysdeps/unix/sysv/linux/syscalls.list (eventfd): New syscall
	entry.
2016-03-17 19:07:39 +00:00
Joseph Myers
4674df40bb Remove __ASSUME_FALLOCATE.
Given current Linux kernel version requirements, we can always assume
the fallocate syscall to be available.  This patch removes
__ASSUME_FALLOCATE and a test for whether __NR_fallocate is defined.

Tested for x86_64 and x86 that installed stripped shared libraries are
unchanged by the patch.

	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_FALLOCATE):
	Remove macro.
	* sysdeps/unix/sysv/linux/wordsize-64/posix_fallocate.c: Do not
	include <kernel-features.h>.
	[!__ASSUME_FALLOCATE]: Remove conditional code.
	(posix_fallocate) [__NR_fallocate]: Make code unconditional.
2016-03-17 12:15:51 +00:00
H.J. Lu
86ed888255 Use JUMPTARGET in x86-64 mathvec
When PLT may be used, JUMPTARGET should be used instead calling the
function directly.

	* sysdeps/x86_64/fpu/multiarch/svml_d_cos2_core_sse4.S
	(_ZGVbN2v_cos_sse4): Use JUMPTARGET to call cos.
	* sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core_avx2.S
	(_ZGVdN4v_cos_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core_avx512.S
	(_ZGVdN4v_cos): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_exp2_core_sse4.S
	(_ZGVbN2v_exp_sse4): Use JUMPTARGET to call exp.
	* sysdeps/x86_64/fpu/multiarch/svml_d_exp4_core_avx2.S
	(_ZGVdN4v_exp_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_exp8_core_avx512.S
	(_ZGVdN4v_exp): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_log2_core_sse4.S
	(_ZGVbN2v_log_sse4): Use JUMPTARGET to call log.
	* sysdeps/x86_64/fpu/multiarch/svml_d_log4_core_avx2.S
	(_ZGVdN4v_log_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_log8_core_avx512.S
	(_ZGVdN4v_log): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_pow2_core_sse4.S
	(_ZGVbN2vv_pow_sse4): Use JUMPTARGET to call pow.
	* sysdeps/x86_64/fpu/multiarch/svml_d_pow4_core_avx2.S
	(_ZGVdN4vv_pow_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_pow8_core_avx512.S
	(_ZGVdN4vv_pow): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_sin2_core_sse4.S
	(_ZGVbN2v_sin_sse4): Use JUMPTARGET to call sin.
	* sysdeps/x86_64/fpu/multiarch/svml_d_sin4_core_avx2.S
	(_ZGVdN4v_sin_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core_avx512.S
	(_ZGVdN4v_sin): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_sincos2_core_sse4.S
	(_ZGVbN2vvv_sincos_sse4): Use JUMPTARGET to call sin and cos.
	* sysdeps/x86_64/fpu/multiarch/svml_d_sincos4_core_avx2.S
	(_ZGVdN4vvv_sincos_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core_avx512.S
	(_ZGVdN4vvv_sincos): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core_avx512.S
	(_ZGVdN8v_cosf): Use JUMPTARGET to call cosf.
	* sysdeps/x86_64/fpu/multiarch/svml_s_cosf4_core_sse4.S
	(_ZGVbN4v_cosf_sse4): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_cosf8_core_avx2.S
	(_ZGVdN8v_cosf_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core_avx512.S
	(_ZGVdN8v_expf): Use JUMPTARGET to call expf.
	* sysdeps/x86_64/fpu/multiarch/svml_s_expf4_core_sse4.S
	(_ZGVbN4v_expf_sse4): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_expf8_core_avx2.S
	(_ZGVdN8v_expf_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S
	(_ZGVdN8v_logf): Use JUMPTARGET to call logf.
	* sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core_sse4.S
	(_ZGVbN4v_logf_sse4): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_logf8_core_avx2.S
	(_ZGVdN8v_logf_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core_avx512.S
	(_ZGVdN8vv_powf): Use JUMPTARGET to call powf.
	* sysdeps/x86_64/fpu/multiarch/svml_s_powf4_core_sse4.S
	(_ZGVbN4vv_powf_sse4): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_powf8_core_avx2.S
	(_ZGVdN8vv_powf_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core_avx512.S
	(_ZGVdN8vv_powf): Use JUMPTARGET to call sinf and cosf.
	* sysdeps/x86_64/fpu/multiarch/svml_s_sincosf4_core_sse4.S
	(_ZGVbN4vvv_sincosf_sse4): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_sincosf8_core_avx2.S
	(_ZGVdN8vvv_sincosf_avx2): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_sinf16_core_avx512.S
	(_ZGVdN8v_sinf): Use JUMPTARGET to call sinf.
	* sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core_sse4.S
	(_ZGVbN4v_sinf_sse4): Likewise.
	* sysdeps/x86_64/fpu/multiarch/svml_s_sinf8_core_avx2.S
	(_ZGVdN8v_sinf_avx2): Likewise.
	* sysdeps/x86_64/fpu/svml_d_wrapper_impl.h (WRAPPER_IMPL_SSE2):
	Use JUMPTARGET to call callee.
	(WRAPPER_IMPL_SSE2_ff): Likewise.
	(WRAPPER_IMPL_SSE2_fFF): Likewise.
	(WRAPPER_IMPL_AVX): Likewise.
	(WRAPPER_IMPL_AVX_ff): Likewise.
	(WRAPPER_IMPL_AVX_fFF): Likewise.
	(WRAPPER_IMPL_AVX512): Likewise.
	(WRAPPER_IMPL_AVX512_ff): Likewise.
	* sysdeps/x86_64/fpu/svml_s_wrapper_impl.h (WRAPPER_IMPL_SSE2):
	Likewise.
	(WRAPPER_IMPL_SSE2_ff): Likewise.
	(WRAPPER_IMPL_SSE2_fFF): Likewise.
	(WRAPPER_IMPL_AVX): Likewise.
	(WRAPPER_IMPL_AVX_ff): Likewise.
	(WRAPPER_IMPL_AVX_fFF): Likewise.
	(WRAPPER_IMPL_AVX512): Likewise.
	(WRAPPER_IMPL_AVX512_ff): Likewise.
	(WRAPPER_IMPL_AVX512_fFF): Likewise.
2016-03-16 14:24:19 -07:00
Mike Frysinger
0863cf2ada add ChangeLog entry 2016-03-16 15:06:33 -04:00
Mike Frysinger
b07aa58944 localedata: use same comment_char/escape_char in these files
These files are small and easy to convert to what most others use.
2016-03-16 14:59:05 -04:00
Carlos O'Donell
6f915e9dc8 localedata: an_ES: fix case of lang_ab
This needs to be lowercase to match the local ISO 639 database.
2016-03-16 00:54:56 -04:00
Samuel Thibault
35fbb341f8 Fix hurd build
* sysdeps/mach/hurd/openat.c (__openat): Add missing ellipsis.
	* resolv/gai_sigqueue.c (__gai_sigqueue): Add missing internal_function
	qualifier.
	* /rt/aio_sigqueue.c (__aio_sigqueue): Add missing attribute_hidden
	internal_function qualifiers.
2016-03-16 13:57:57 +01:00
Carlos O'Donell
b4f518ecfa Fix building glibc master with NDEBUG and --with-cpu.
When building on i686, x86_64, and arm, and with NDEBUG, or --with-cpu
there are various variables and functions which are unused based on
these settings.

This patch marks all such variables with __attribute__((unused)) to
avoid the compiler warnings when building with the aformentioned
options.
2016-03-15 23:23:24 -04:00
Joseph Myers
089b772f98 Remove __ASSUME_PPOLL.
With current kernel version requirements, the ppoll Linux syscall can
be assumed to be present on all architectures; this patch removes the
__ASSUME_PPOLL macro and conditionals on it and on whether __NR_ppoll
is defined.  (Note that the same can't yet be done for pselect,
because MicroBlaze only wired that up in the syscall table in 3.15.)

Tested for x86_64 and x86 that installed stripped shared libraries are
unchanged by the patch.

	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_PPOLL):
	Remove macro.
	* sysdeps/unix/sysv/linux/ppoll.c: Do not include
	<kernel-features.h>.
	[__NR_ppoll]: Make code unconditional.
	[!__ASSUME_PPOLL]: Remove conditional code.
2016-03-15 21:11:07 +00:00
Joseph Myers
35ade9f11b Adjust kernel-features.h defaults for socket syscalls.
This patch adjusts the defaults for kernel-features.h macros relating
to availability of accept4, recvmmsg and sendmmsg.  It is not intended
to affect which macros end up getting defined in any configuration.

At present, all architectures with syscalls for those functions need
to define __ASSUME_*_SYSCALL macros; in particular, any new
architecture needs its own kernel-features.h file for that purpose,
though it may not otherwise need such a header.  Those macros are then
used together with __ASSUME_SOCKETCALL to define macros for whether
the functions in question are available.

This patch changes the defaults so that the syscalls are assumed to be
available by default with recent-enough kernels, and it is the
responsibility of architecture headers to undefine the macros if they
are unavailable in supported kernels at least as recent as the version
where the architecture-independent functionality was introduced.  The
__ASSUME_<function> macros are defaulted similarly instead of being
defined based on other macros (defining based on other macros would no
longer work because the #undefs appear after the generic header is
included), so where the syscall being unavailable means the function
is unavailable this means the architecture header has to undefine the
__ASSUME_<function> macro; this only affects __ASSUME_ACCEPT4 for
ia64, as other cases where the syscalls were added late enough to be
relevant with current kernel version requirements are all on
socketcall architectures.

As a consequence, the AArch64 and Nios II kernel-features.h header
files are removed, and others simplified.  When the minimum kernel
version becomes 4.3 or later on all architectures, the syscalls in
question can just be assumed unconditionally, permitting further
simplification.

Tested for x86_64, x86 and powerpc (that installed shared libraries
are unchanged by the patch, and testsuite for x86_64 and x86).

	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Define unconditionally.
	(__ASSUME_ACCEPT4): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Define.
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG):
	Likewise.
	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h: Remove file.
	* sysdeps/unix/sysv/linux/nios2/kernel-features.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
	(__ASSUME_RECVMMSG_SYSCALL): Do not define.
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/hppa/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
	0x040300] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x040300].
	* sysdeps/unix/sysv/linux/ia64/kernel-features.h
	(__ASSUME_RECVMMSG_SYSCALL): Do not define.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
	0x030300] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x030300].
	[__LINUX_KERNEL_VERSION < 0x030300] (__ASSUME_ACCEPT4): Undefine.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
	0x040300] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x040300].
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
	0x030300] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x030300].
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
	0x040300] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x040300].
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/tile/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
2016-03-15 21:09:33 +00:00