Stefan Liebler [Wed, 20 Jan 2016 07:32:37 +0000 (08:32 +0100)]
S390: Fix build error in iconvdata/bug-iconv11.c.
This fixes the following build error on S390 31bit while building the test
iconvdata/bug-iconv11.c with gcc 5.3:
bug-iconv11.c: In function ‘test_ibm93x’:
bug-iconv11.c:59:11: error: format ‘%td’ expects argument of type ‘ptrdiff_t’, but argument 2 has type ‘size_t {aka long unsigned int}’ [-Werror=format=]
printf (" ==> %td: %s\n"
^
cc1: all warnings being treated as errors
This patch uses %zu format specifier for argument size_t ret instead of %td.
ChangeLog:
* iconvdata/bug-iconv11.c (test_ibm93x):
Use %zu printf format specifier for size_t argument.
Joseph Myers [Tue, 19 Jan 2016 21:42:58 +0000 (21:42 +0000)]
Fix ulps regeneration for *-finite tests.
On running tests after from-scratch ulps regeneration, I found that
some libm tests failed with ulps in excess of those recorded in the
from-scratch regeneration, which should never happen unless those ulps
exceed the limit on ulps that can go in libm-test-ulps files.
Failure: Test: atan2_upward (inf, -inf)
Result:
is: 2.
35619498e+00 0x1.2d97ccp+1
should be: 2.
35619450e+00 0x1.2d97c8p+1
difference: 4.
76837159e-07 0x1.000000p-21
ulp : 2.0000
max.ulp : 1.0000
Maximal error of `atan2_upward'
is : 2 ulp
accepted: 1 ulp
Failure: Test: carg_upward (-inf + inf i)
Result:
is: 2.
35619498e+00 0x1.2d97ccp+1
should be: 2.
35619450e+00 0x1.2d97c8p+1
difference: 4.
76837159e-07 0x1.000000p-21
ulp : 2.0000
max.ulp : 1.0000
Maximal error of `carg_upward'
is : 2 ulp
accepted: 1 ulp
The problem comes from the addition of tests for the finite-math-only
versions of libm functions. Those tests share ulps with the default
function variants. make regen-ulps runs the default tests before the
finite-math-only tests, concatenating the resulting ulps before
feeding them to gen-libm-test.pl to generate a new libm-test-ulps
file. But gen-libm-test.pl always takes the last ulps value given for
any (function, type) pair. So, if the largest ulps for a function
come from non-finite inputs, a from-scratch regeneration loses those
ulps.
This patch fixes gen-libm-test.pl, in the case where there are
multiple ulps values for a (function, type) pair - which can only
happen as part of a regeneration - to take the largest ulps value
rather than the last one.
Tested for ARM / MIPS / powerpc-nofpu.
* math/gen-libm-test.pl (parse_ulps): Do not reduce
already-recorded ulps.
* sysdeps/arm/libm-test-ulps: Regenerated.
* sysdeps/mips/mips32/libm-test-ulps: Likewise.
* sysdeps/mips/mips64/libm-test-ulps: Likewise.
* sysdeps/powerpc/nofpu/libm-test-ulps: Likewise.
Andrew Senkevich [Tue, 19 Jan 2016 11:34:53 +0000 (14:34 +0300)]
Fixed build with assembler w/o AVX-512 support.
* sysdeps/x86_64/multiarch/ifunc-impl-list.c: Fixed build with
assembler not supporting AVX-512.
Stefan Liebler [Tue, 19 Jan 2016 09:00:52 +0000 (10:00 +0100)]
S390: Regenerate ULPs
I've regenerated ulps from scratch for s390/s390x.
All math testcases are passing afterwards.
ChangeLog:
* sysdeps/s390/fpu/libm-test-ulps: Regenerated.
Joseph Myers [Mon, 18 Jan 2016 23:32:40 +0000 (23:32 +0000)]
Regenerate MIPS libm-test-ulps.
* sysdeps/mips/mips32/libm-test-ulps: Regenerated.
* sysdeps/mips/mips64/libm-test-ulps: Likewise.
Joseph Myers [Mon, 18 Jan 2016 23:02:03 +0000 (23:02 +0000)]
Regenerate powerpc-nofpu libm-test-ulps.
* sysdeps/powerpc/nofpu/libm-test-ulps: Regenerated.
Joseph Myers [Mon, 18 Jan 2016 22:55:47 +0000 (22:55 +0000)]
Regenerate ARM libm-test-ulps.
* sysdeps/arm/libm-test-ulps: Regenerated.
Paul Pluzhnikov [Mon, 18 Jan 2016 22:36:28 +0000 (14:36 -0800)]
[BZ #19451]
* math/Makefile (libm-vec-tests): Move libraries after wrappers.o to fix
"make check" link failure on Ubuntu.
Stefan Liebler [Mon, 18 Jan 2016 11:48:06 +0000 (12:48 +0100)]
S/390: Do not raise inexact exception in lrint/lround. [BZ #19486]
I get some math test-failures on s390 for float/double/ldouble for
various lrint/lround functions like:
lrint (0x1p64): Exception "Inexact" set
lrint (-0x1p64): Exception "Inexact" set
lround (0x1p64): Exception "Inexact" set
lround (-0x1p64): Exception "Inexact" set
...
GCC emits "convert to fixed" instructions for casting floating point
values to integer values. These instructions raise invalid and inexact
exceptions if the floating point value exceeds the integer type ranges.
This patch enables the various FIX_DBL_LONG_CONVERT_OVERFLOW macros in
order to avoid a cast from floating point to integer type and raise the
invalid exception with feraiseexcept.
The ldbl-128 rint/round functions are now using the same logic.
ChangeLog:
[BZ #19486]
* sysdeps/s390/fix-fp-int-convert-overflow.h: New File.
* sysdeps/generic/fix-fp-int-convert-overflow.h
(FIX_LDBL_LONG_CONVERT_OVERFLOW,
FIX_LDBL_LLONG_CONVERT_OVERFLOW): New define.
* sysdeps/arm/fix-fp-int-convert-overflow.h: Likewise.
* sysdeps/mips/mips32/fpu/fix-fp-int-convert-overflow.h:
Likewise.
* sysdeps/ieee754/ldbl-128/s_lrintl.c (__lrintl):
Avoid conversions to long int where inexact exceptions
could be raised.
* sysdeps/ieee754/ldbl-128/s_lroundl.c (__lroundl):
Likewise.
* sysdeps/ieee754/ldbl-128/s_llrintl.c (__llrintl):
Avoid conversions to long long int where inexact exceptions
could be raised.
* sysdeps/ieee754/ldbl-128/s_llroundl.c (__llroundl):
Likewise.
Mike Frysinger [Sat, 16 Jan 2016 00:57:36 +0000 (19:57 -0500)]
configure: make the unsupported error message less hostile
Andrew Senkevich [Sat, 16 Jan 2016 11:42:26 +0000 (14:42 +0300)]
Fixed typos in __memcpy_chk.
* sysdeps/x86_64/multiarch/memcpy_chk.S: Fixed typos.
Mike Frysinger [Sat, 16 Jan 2016 07:31:25 +0000 (02:31 -0500)]
sparc: mman.h: fix bad comment insertion
The MCL_ONFAULT define was inserted into the middle of a comment which
breaks the build.
Torvald Riegel [Fri, 15 Jan 2016 22:16:49 +0000 (23:16 +0100)]
nptl: Add first-line description for barrier tests.
Torvald Riegel [Fri, 15 Jan 2016 21:40:50 +0000 (22:40 +0100)]
Fix pthread_barrier_init typo.
Applies Paul Eggert's fix for BZ 18868.
Andrew Senkevich [Fri, 15 Jan 2016 21:49:45 +0000 (00:49 +0300)]
Added memcpy/memmove family optimized with AVX512 for KNL hardware.
Added AVX512 implementations of memcpy, mempcpy, memmove, memcpy_chk,
mempcpy_chk, memmove_chk.
It shows average improvement more than 30% over AVX versions on KNL
hardware (performance results in the thread
<https://sourceware.org/ml/libc-alpha/2016-01/msg00258.html>).
* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Added new files.
* sysdeps/x86_64/multiarch/ifunc-impl-list.c: Added new tests.
* sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S: New file.
* sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S: Likewise.
* sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S: Likewise.
* sysdeps/x86_64/multiarch/memcpy.S: Added new IFUNC branch.
* sysdeps/x86_64/multiarch/memcpy_chk.S: Likewise.
* sysdeps/x86_64/multiarch/memmove.c: Likewise.
* sysdeps/x86_64/multiarch/memmove_chk.c: Likewise.
* sysdeps/x86_64/multiarch/mempcpy.S: Likewise.
* sysdeps/x86_64/multiarch/mempcpy_chk.S: Likewise.
Torvald Riegel [Wed, 24 Jun 2015 12:37:32 +0000 (14:37 +0200)]
New pthread_barrier algorithm to fulfill barrier destruction requirements.
The previous barrier implementation did not fulfill the POSIX requirements
for when a barrier can be destroyed. Specifically, it was possible that
threads that haven't noticed yet that their round is complete still access
the barrier's memory, and that those accesses can happen after the barrier
has been legally destroyed.
The new algorithm does not have this issue, and it avoids using a lock
internally.
Paul E. Murphy [Mon, 11 Jan 2016 22:24:04 +0000 (17:24 -0500)]
Fix race in tst-mqueue5
The check is done on line 117 by a thread spawned
from do_child(), forked from do_test(). This test
generates a signal in the forked process.
Either thread may handle the signal, and on ppc,
it happens to be done on do_child, on the thread
which is not doing the check on line 117.
This exposes a race condition whereby the test
incorrectly fails as the signal is caught during
or after the check.
This is mitigated by ensuring the signal is blocked
in the child thread while thread is running.
Martin Sebor [Fri, 15 Jan 2016 18:25:13 +0000 (11:25 -0700)]
Have iconv accept redundant escape sequences in IBM900, IBM903, IBM905,
IBM907, and IBM909.
Patch for bug #17197 changes the encoder to avoid generating redundant
shift sequences. However, those sequences may already be present in
data encododed by prior versions of the encoder. This change modifies
the decoder to also avoid rejecting redundant shift sequences.
[BZ #19432]
* iconvdata/Makefile: Add bug-iconv11.
* iconvdata/bug-iconv11.c: New test.
* iconvdata/ibm930.c: Do not reject redundant shift sequences.
* iconvdata/ibm933.c: Same.
* iconvdata/ibm935.c: Same.
* iconvdata/ibm937.c: Same.
* iconvdata/ibm939.c: Same.
Martin Sebor [Fri, 15 Jan 2016 18:07:41 +0000 (11:07 -0700)]
Fix build failures with -DDEBUG.
[BZ #19443]
* crypt/crypt_util.c [DEBUG] (_ufc_prbits): Correct format string.
[DEBUG] (_ufc_set_bits): Declare used.
* iconv/gconv_dl.c [DEBUG]: Add a missing include directive.
[DEBUG] (print_all): Declare used.
* resolv/res_send.c [DEBUG] (__libc_res_nsend): Explicitly convert
operands of the ternary ?: expression to target type.
* stdlib/rshift.c [DEBUG] (mpn_rshift): Use assert() instead of
calling the undeclared abort.
* time/mktime.c [DEBUG] (DEBUG): Rename to DEBUG_MKTIME.
Martin Sebor [Fri, 15 Jan 2016 17:44:07 +0000 (10:44 -0700)]
Fix build errors with -DNDEBUG.
[BZ #18755]
* iconv/skeleton.c (FUNCTION_NAME): Suppress -Wunused-but-set-variable
warnings.
* sysdeps/nptl/gai_misc.h (__gai_start_notify_thread): Same.
(__gai_create_helper_thread): Same.
* nscd/nscd.c (do_exit): Suppress -Wunused-variable.
* iconvdata/iso-2022-cn-ext.c (BODY): Initialize local variable
to suppress -Wmaybe-uninitialized warnings.
H.J. Lu [Fri, 15 Jan 2016 13:22:59 +0000 (05:22 -0800)]
Call math_opt_barrier inside if
Since floating-point operation may trigger floating-point exceptions,
we call math_opt_barrier inside if to prevent code motion.
[BZ #19465]
* sysdeps/ieee754/dbl-64/s_fma.c (__fma): Call math_opt_barrier
inside if.
* sysdeps/ieee754/ldbl-128/s_fmal.c (__fmal): Likewise.
* sysdeps/ieee754/ldbl-96/s_fma.c (__fma): Likewise.
* sysdeps/ieee754/ldbl-96/s_fmal.c (__fmal): Likewise.
H.J. Lu [Fri, 15 Jan 2016 00:35:24 +0000 (16:35 -0800)]
Use TIME_T_MAX and TIME_T_MIN in tst-mktime2.c
GCC 5.3 compiles
for (time_t_max = 1; 0 < time_t_max; time_t_max *= 2)
continue;
into an infinite loop with -Os. We can copy TIME_T_MAX and TIME_T_MIN
from time/mktime.c.
[BZ #19466]
* time/tst-mktime2.c (time_t_max): Removed.
(time_t_min): Likewise.
(TYPE_SIGNED): New.
(TYPE_MINIMUM): Likewise.
(TYPE_MAXIMUM): Likewise.
(TIME_T_MIN): Likewise.
(TIME_T_MAX): Likewise.
(mktime_test): Replace time_t_max and time_t_min with TIME_T_MAX
and TIME_T_MIN.
(do_test): Likewise.
Amit Pawar [Thu, 14 Jan 2016 14:36:02 +0000 (20:06 +0530)]
Set index_Fast_Unaligned_Load for Excavator family CPUs
GLIBC benchtest testcases shows SSE2_Unaligned based implementations
are performing faster compare to SSE2 based implementations for
routines: strcmp, strcat, strncat, stpcpy, stpncpy, strcpy, strncpy
and strstr. Flag index_Fast_Unaligned_Load is set for Excavator family
0x15h CPU's. This makes SSE2_Unaligned based implementations as
default for these routines.
[BZ #19467]
* sysdeps/x86/cpu-features.c (init_cpu_features): Set
index_Fast_Unaligned_Load flag for Excavator family CPUs.
Marcin Kościelnicki [Thu, 14 Jan 2016 15:48:55 +0000 (16:48 +0100)]
Add __private_ss to s390 struct tcbhead.
Preparation for gcc -fsplit-stack support (gcc bug #68191). The new
field is basically identical to the one on x86. Its TCB offset needs
to be constant, as it'll be hardcoded in gcc.
ChangeLog:
* sysdeps/s390/nptl/tls.h (struct tcbhead_t): Add __private_ss field.
Carlos O'Donell [Wed, 13 Jan 2016 16:00:57 +0000 (11:00 -0500)]
Use $(PYTHON) to run benchtests python files.
Flavio Cruz [Tue, 12 Jan 2016 23:48:30 +0000 (00:48 +0100)]
Fix O_DIRECTORY lookup on trivial translators
* hurd/lookup-retry.c (__hurd_file_name_lookup_retry): Do not remove
leading slash when `file_name' is "/".
Joseph Myers [Tue, 12 Jan 2016 12:42:55 +0000 (12:42 +0000)]
Add new header definitions from Linux 4.4 (plus older ptrace definitions).
This patch adds some new header definitions from Linux 4.4:
* MCL_ONFAULT is added to bits/mman.h / bits/mman-linux.h (this was
already done for hppa).
* PTRACE_SECCOMP_GET_FILTER is added to sys/ptrace.h. Along with it,
the older PTRACE_GETSIGMASK and PTRACE_SETSIGMASK, added in Linux
3.11 but missed at the time, are also added.
Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).
* bits/mman-linux.h [!MCL_CURRENT] (MCL_ONFAULT): New macro.
* sysdeps/unix/sysv/linux/alpha/bits/mman.h (MCL_ONFAULT):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/mman.h (MCL_ONFAULT):
Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/mman.h (MCL_ONFAULT):
Likewise.
* sysdeps/unix/sysv/linux/sys/ptrace.h (PTRACE_GETSIGMASK): New
enum constant and macro.
(PTRACE_SETSIGMASK): Likewise.
(PTRACE_SECCOMP_GET_FILTER): Likewise.
* sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h
(PTRACE_GETSIGMASK): Likewise.
(PTRACE_SETSIGMASK): Likewise.
(PTRACE_SECCOMP_GET_FILTER): Likewise.
* sysdeps/unix/sysv/linux/ia64/sys/ptrace.h (PTRACE_GETSIGMASK):
Likewise.
(PTRACE_SETSIGMASK): Likewise.
(PTRACE_SECCOMP_GET_FILTER): Likewise.
* sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h
(PTRACE_GETSIGMASK): Likewise.
(PTRACE_SETSIGMASK): Likewise.
(PTRACE_SECCOMP_GET_FILTER): Likewise.
* sysdeps/unix/sysv/linux/s390/sys/ptrace.h (PTRACE_GETSIGMASK):
Likewise.
(PTRACE_SETSIGMASK): Likewise.
(PTRACE_SECCOMP_GET_FILTER): Likewise.
* sysdeps/unix/sysv/linux/sparc/sys/ptrace.h (PTRACE_GETSIGMASK):
Likewise.
(PTRACE_SETSIGMASK): Likewise.
(PTRACE_SECCOMP_GET_FILTER): Likewise.
* sysdeps/unix/sysv/linux/tile/sys/ptrace.h (PTRACE_GETSIGMASK):
Likewise.
(PTRACE_SETSIGMASK): Likewise.
(PTRACE_SECCOMP_GET_FILTER): Likewise.
Adhemerval Zanella [Mon, 11 Jan 2016 15:34:52 +0000 (13:34 -0200)]
Fix isinf/isnan declaration conflict with C++11
GLIBC declares isinf and isnan as expected by Unix98 and for C99 programs
these functions are hidden by the generics inf and isnan macros.
However C++11 defines isinf and isnan with the same semantics as C99
but requires that they are functions not macros (C++11 26.8 [c.math]
paragraph 10).
This then results in a conflict for perfectly valid C++11 programs:
--
using std::isinf;
using std::isnan;
double d1 = isinf(1.0);
double d2 = isnan(1.0);
d.cc:3:12: error: ‘constexpr bool std::isinf(double)’ conflicts with a previous declaration
using std::isinf;
[...]
/usr/include/bits/mathcalls.h:201:1: note: previous declaration ‘int isinf(double)’
__MATHDECL_1 (int,isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));
[...]
--
This patch fixes the prototypes by leaving the obsolete functions
defined for C++98 code (since they do not conflict with any standard
function in C++98), however preventing them on C++11.
No issues found in libstdc++ tests and check on x86_64 and i686 with
glibc testsuite.
Patch from Jonathan Wakely <jwakely.gcc@gmail.com>.
[BZ #19439]
* math/bits/mathcalls.h
[!__cplusplus || __cplusplus < 201103L] (isinf): Do not declare
prototype.
[!__cplusplus || __cplusplus < 201103L] (isnan): Likewise.
Andreas Schwab [Tue, 17 Nov 2015 10:43:49 +0000 (11:43 +0100)]
Force rereading TZDEFRULES after it was used to set DST rules only (bug #19253)
If the TZDEFRULES file was used to set the DST rules when $TZ didn't
provide any we need to make sure that the next time it is used we
recompute everything as __tzfile_default changes some setting from what is
provided by TZDEFRULES.
Paul Eggert [Sun, 10 Jan 2016 08:20:03 +0000 (00:20 -0800)]
Fix doc quoting problems with Texinfo 5
Without this change, in the info file output, Texinfo 5 quotes code
in text with undirected single quotes 'like this' and generates
code examples that with many PDF readers cannot be cut out of PDFs
and pasted into code.
* manual/libc.texinfo: Configure the libc manual like the GNU
Emacs manual, by using @documentencoding and setting
txicodequoteundirected and txicodequotebacktick. This way,
Texinfo 5 quotes code in text with directed single quotes ‘like
this’ and produces examples that can be cut out of PDFs. This
change causes Texinfo 5 to generate info files that contain UTF-8
characters in the set {'‘', '’', '“', '”', 'Ä', 'ä', 'ö', '−',
'–', '—', '©', '⇒', '•', '…'}, which is OK nowadays.
Evert [Mon, 4 Jan 2016 22:20:58 +0000 (17:20 -0500)]
localedata: nl_NL: date_fmt: rewrite to match standards [BZ #16495]
Add some references to public Dutch standards.
Tulio Magno Quites Machado Filho [Mon, 28 Dec 2015 14:24:43 +0000 (12:24 -0200)]
powerpc: Enforce compiler barriers on hardware transactions
Work around a GCC behavior with hardware transactional memory built-ins.
GCC doesn't treat the PowerPC transactional built-ins as compiler
barriers, moving instructions past the transaction boundaries and
altering their atomicity.
Marko Myllynen [Fri, 8 Jan 2016 13:11:15 +0000 (15:11 +0200)]
Make shebang interpreter directives consistent
Undo changes in files maintained elsewhere.
Carlos Eduardo Seo [Tue, 5 Jan 2016 17:13:18 +0000 (15:13 -0200)]
powerpc: Add hwcap2 bits for POWER9.
Added hwcap2 bit masks for Power ISA 3.0 and VSX IEEE binary float 128-bit
features.
John David Anglin [Sat, 2 Jan 2016 14:48:18 +0000 (09:48 -0500)]
hppa: fix dladdr [BZ #19415]
The attached patch fixes dladdr on hppa.
Instead of using the generic version of _dl_lookup_address, we use an
implementation more or less modeled after __canonicalize_funcptr_for_compare()
in gcc. The function pointer is analyzed and if it points to the
trampoline used to call _dl_runtime_resolve just before the global
offset table, then we call _dl_fixup to resolve the function pointer.
Then, we return the instruction pointer from the first word of the
descriptor.
The change fixes the testcase provided in [BZ #19415] and the Debian
nss package now builds successfully.
Mike Frysinger [Thu, 7 Jan 2016 22:18:09 +0000 (17:18 -0500)]
longlong: fix sh -Wundef builds
This file fails when building for SuperH as it assumes __SHMEDIA__
is always defined. Update the code to check if it's defined.
Andrew Stubbs [Tue, 27 Oct 2015 13:36:47 +0000 (13:36 +0000)]
longlong: add SH FDPIC support
Richard Henderson [Tue, 28 Oct 2014 20:26:24 +0000 (13:26 -0700)]
longlong.h: Disable alpha umul_ppmm for old g++
Causes "unexpected AST of kind MULT_HIGHPART" error with bootstrap from gcc 4.8.
Mike Frysinger [Thu, 7 Jan 2016 00:51:28 +0000 (19:51 -0500)]
xstat: only check to see if __ASSUME_ST_INO_64_BIT is defined
We define __ASSUME_ST_INO_64_BIT by default for Linux targets, and then
undef it for alpha/sh targets. But the code that uses it looks at its
value (as 0/1) rather than whether it's defined (like all other assume
knobs). Change the code to see if it's defined to fix build Wundef build
errors for alpha/sh.
Paul Eggert [Thu, 7 Jan 2016 11:45:07 +0000 (11:45 +0000)]
Update timezone code from tzcode 2015g.
This patch updates the timezone code from tzcode 2015g. The Makefile
and README changes are based on those in Paul's patch
<https://sourceware.org/ml/libc-alpha/2015-05/msg00553.html>.
Tested for x86_64 and x86.
2016-01-06 Paul Eggert <eggert@cs.ucla.edu>
Joseph Myers <joseph@codesourcery.com>
* timezone/private.h: Update from tzcode 2015g.
* timezone/tzfile.h: Likewise.
* timezone/tzselect.ksh: Likewise.
* timezone/zdump.c: Likewise.
* timezone/zic.c: Likewise.
* timezone/ialloc.c: Remove file.
* timezone/scheck.c: Likewise.
* timezone/Makefile (extra-objs): Remove variable.
($(objpfx)zic): Do not depend on scheck.o and ialloc.o.
(tz-cflags): Add -DHAVE_GETTEXT -DUSE_LTZ=0
-Wno-maybe-uninitialized.
(CFLAGS-zdump.c): Remove -fwrapv -DNOID -DHAVE_GETTEXT.
(CFLAGS-zic.c): Remove -DNOID -DHAVE_GETTEXT.
(CFLAGS-ialloc.c): Remove variable.
(CFLAGS-scheck.c): Likewise.
* timezone/README: Update list of files from tzcode.
Khem Raj [Fri, 1 Jan 2016 20:20:26 +0000 (20:20 +0000)]
argp: Use fwrite_unlocked instead of __fxprintf when !_LIBC
__fxprintf is not available when argp is built outside libc.
gnulib has the same logic already.
Marko Myllynen [Thu, 7 Jan 2016 08:51:53 +0000 (10:51 +0200)]
Make shebang interpreter directives consistent
John David Anglin [Sun, 4 May 2014 18:02:30 +0000 (14:02 -0400)]
hppa: fix pthread spinlock
URL: https://bugs.debian.org/725508
H.J. Lu [Wed, 6 Jan 2016 22:03:10 +0000 (14:03 -0800)]
Update copyright dates committed in 2016
H.J. Lu [Wed, 6 Jan 2016 20:37:04 +0000 (12:37 -0800)]
Mark internal unistd functions hidden in ld.so
Since internal unistd functions are only used internally in ld.so and
libc.so, they can be made hidden. __close, __getcwd, __getpid,
__libc_read and __libc_write can't be hidden in ld.so on Hurd since they
will be preempted by the ones in libc.so after bootstrap.
[BZ #19122]
* include/unistd.h [IS_IN (rtld)]: Include <dl-unistd.h>.
* sysdeps/generic/dl-unistd.h: New file.
* sysdeps/mach/hurd/dl-unistd.h: Likewise.
H.J. Lu [Wed, 6 Jan 2016 19:28:04 +0000 (11:28 -0800)]
Mark ld.so internal mmap functions hidden in ld.so
Since ld.so internal mmap functions are only used internally in ld.so,
they can be made hidden. Don't hide __mmap on Hurd, since __mmap in
ld.so will be preempted by the one in libc.so after bootstrap.
[BZ #19122]
* include/sys/mman.h [IS_IN (rtld)]: Include <dl-mman.h>.
* sysdeps/generic/dl-mman.h: New file.
* sysdeps/mach/hurd/dl-mman.h: Likewise.
Joseph Myers [Tue, 5 Jan 2016 18:04:06 +0000 (18:04 +0000)]
Update miscellaneous files from upstream sources.
This patch updates texinfo.tex, config.guess, config.sub and
move-if-change from their respective upstream sources.
* manual/texinfo.tex: Update to version 2016-01-04.21 with
trailing whitespace removed.
* scripts/config.guess: Update to version 2016-01-01.
* scripts/config.sub: Update to version 2016-01-01.
* scripts/move-if-change: Update from gnulib.
Anton Blanchard [Mon, 4 Jan 2016 15:28:52 +0000 (13:28 -0200)]
Eliminate redundant sign extensions in pow()
When looking at the code generated for pow() on ppc64 I noticed quite
a few sign extensions. Making the array indices unsigned reduces the
number of sign extensions from 24 to 7.
Tested for powerpc64le and x86_64.
Joseph Myers [Mon, 4 Jan 2016 16:26:30 +0000 (16:26 +0000)]
Update copyright dates not handled by scripts/update-copyrights.
I've updated copyright dates in glibc for 2016. This is the patch for
the changes not generated by scripts/update-copyrights and subsequent
build / regeneration of generated files.
* NEWS: Update copyright dates.
* catgets/gencat.c (print_version): Likewise.
* csu/version.c (banner): Likewise.
* debug/catchsegv.sh: Likewise.
* debug/pcprofiledump.c (print_version): Likewise.
* debug/xtrace.sh (do_version): Likewise.
* elf/ldconfig.c (print_version): Likewise.
* elf/ldd.bash.in: Likewise.
* elf/pldd.c (print_version): Likewise.
* elf/sotruss.sh: Likewise.
* elf/sprof.c (print_version): Likewise.
* iconv/iconv_prog.c (print_version): Likewise.
* iconv/iconvconfig.c (print_version): Likewise.
* locale/programs/locale.c (print_version): Likewise.
* locale/programs/localedef.c (print_version): Likewise.
* login/programs/pt_chown.c (print_version): Likewise.
* malloc/memusage.sh (do_version): Likewise.
* malloc/memusagestat.c (print_version): Likewise.
* malloc/mtrace.pl: Likewise.
* manual/libc.texinfo: Likewise.
* nptl/version.c (banner): Likewise.
* nscd/nscd.c (print_version): Likewise.
* nss/getent.c (print_version): Likewise.
* nss/makedb.c (print_version): Likewise.
* posix/getconf.c (main): Likewise.
* scripts/test-installation.pl: Likewise.
* sysdeps/unix/sysv/linux/lddlibc4.c (main): Likewise.
Joseph Myers [Mon, 4 Jan 2016 16:05:18 +0000 (16:05 +0000)]
Update copyright dates with scripts/update-copyrights.
Helge Deller [Sat, 2 Jan 2016 22:31:12 +0000 (23:31 +0100)]
hppa: Add MAP_HUGETLB and MAP_STACK defines [BZ #19285]
The attached patch adds some upstream defines like MAP_HUGETLB and MAP_STACK
in mman.h for the hppa architecture.
The existing MADV_xxK_PAGES defines were dropped upstream, because they were
originally added many years ago based on a proposed patch for the Linux kernel
which was never applied. So, this patch drops those unneeded defines.
Mike Frysinger [Tue, 29 Dec 2015 06:06:30 +0000 (01:06 -0500)]
ia64: fpu: fix gamma definition handling [BZ #15421]
The rework in commit
d709042a6e5ab3c360280faad6f9538a34dc8eea broke
buiding on ia64 due to compat_symbol expanding into ... in some cases.
The common files were wrapped in a BUILD_LGAMMA check, but the ia64
ones were not. Add that logic to the ia64 files too.
Dmitry V. Levin [Sun, 27 Dec 2015 16:30:02 +0000 (16:30 +0000)]
Fix linux personality syscall wrapper
The personality system call, starting with linux kernel commit
v2.6.29-6609-g11d06b2a1e5658f448a308aa3beb97bacd64a940, always
successfully changes the personality if requested. The syscall
wrapper, however, still can return an error in the following cases:
- the value returned by the system call looks like an error
due to architecture limitations of 32-bit kernels;
- a personality greater than 0xffffffff is passed to the system call,
and the 64-bit kernel does not have commit
v2.6.35-rc1-372-g485d527686850d68a0e9006dd9904f19f122485e
that would truncate this value to unsigned int;
- on sparc64, the value returned by the system call looks like an error
due to sparc64 kernel sign extension bug.
The solution is three-fold:
- move generic syscalls.list personality entry to generic 64-bit
syscalls.list file;
- for each 32-bit architecture that use negated errno semantics,
add a NOERRNO personality entry to their syscalls.list file;
- for sparc64 and 32-bit architectures that use dedicated registers
to flag syscall errors, add a wrapper around personality syscall;
if the system call return value is flagged as an error, this wrapper
returns the negated "would be errno" value, otherwise it returns
the system call return value; on sparc64, it also truncates the
personality argument to unsigned int before passing it to the kernel.
[BZ #19408]
* sysdeps/unix/sysv/linux/personality.c: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/personality.c: Likewise.
* sysdeps/unix/sysv/linux/tst-personality.c: Likewise.
* sysdeps/unix/sysv/linux/Makefile [$(subdir) == misc]
(sysdep_routines): Add personality.
(tests): Add tst-personality.
* sysdeps/unix/sysv/linux/syscalls.list (personality): Move ...
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: ... here.
* sysdeps/unix/sysv/linux/arm/syscalls.list (personality): New entry.
* sysdeps/unix/sysv/linux/hppa/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/i386/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/m68k/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/microblaze/syscalls.list (personality):
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list (personality):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list (personality):
Likewise.
* sysdeps/unix/sysv/linux/sh/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list (personality):
Likewise.
Aurelien Jarno [Tue, 29 Dec 2015 14:27:56 +0000 (15:27 +0100)]
Cleanup ARM ioperm implementation (step 2)
Since GLIBC requires a minimum 2.6.32 kernel, the sysctl (CTL_BUS,
CTL_BUS_ISA, ISA_*) is always available. We can therefore remove the
fallback code reading /etc/arm_systype or parsing /proc/cpuinfo.
Remove fscanf from localplt.data as it is no longer called from within
GLIBC.
* sysdeps/unix/sysv/linux/arm/ioperm.c: Do not include <string.h>.
(PATH_ARM_SYSTYPE): Remove.
(PATH_CPUINFO): Likewise.
(IO_BASE_FOOTBRIDGE): Likewise.
(IO_SHIFT_FOOTBRIDGE): Likewise.
(struct platform): Likewise.
(init_iosys): Remove compatibility code for 2.4 kernels.
* sysdeps/unix/sysv/linux/arm/localplt.data: Remove fscanf.
Mike Frysinger [Wed, 30 Dec 2015 04:19:54 +0000 (23:19 -0500)]
localedata: nl_NL@euro: copy measurement from nl_NL [BZ #19198]
No real changes here as the output is the same. Just making the input
a little bit nicer.
Florian Weimer [Tue, 29 Dec 2015 19:32:35 +0000 (20:32 +0100)]
malloc: Test various special cases related to allocation failures
This test case exercises unusual code paths in allocation functions,
related to allocation failures. Specifically, the test can reveal
the following bugs:
(a) calloc returns non-zero memory on fallback to sysmalloc.
(b) calloc can self-deadlock because it fails to release
the arena lock on certain allocation failures.
(c) pvalloc can dereference a NULL arena pointer.
(a) and (b) appear specific to a faulty downstream backport.
(c) was fixed as part of commit
10ad46bc6526edc5c7afcc57112da96917ff3629.
The test for (a) was inspired by a reproducer supplied by Jeff Layton.
Damyan Ivanov [Tue, 29 Dec 2015 18:45:25 +0000 (13:45 -0500)]
localedata: bg_BG: use colon as time separator [BZ #19385]
The only official source is the "Official spelling dictionary of the
Bulgarian language, Prosveta 2012", which states there are three ways
to separate time components: comma, colon and dot. That same dictionary
doesn't say which one is preferred.
So I turned to the mailing list of the translators of free software in
Bulgarian. The consensus is that colon is the only separator that is
widely used in Bulgarian texts and everything else will just be confusing.
URL: http://lists.ludost.net/pipermail/dict/2015-December/000538.html
Mike Frysinger [Tue, 10 Nov 2015 05:41:33 +0000 (00:41 -0500)]
list-fixed-bugs: use argparse for the commandline
This makes the interface more friendly to users.
Rob Wu [Wed, 16 Dec 2015 11:53:27 +0000 (12:53 +0100)]
resolv: Reset defdname before use in __res_vinit [BZ #19369]
Resetting defdname (default domain name) before use in __res_vinit
ensures that the default domain name is correctly set to a default
value when it is not set by the LOCALDOMAIN environment variable or
the "domain" or "search" parameters in resolv.conf
Tested using the steps from:
https://sourceware.org/bugzilla/show_bug.cgi?id=19369
John David Anglin [Sun, 22 Nov 2015 22:15:04 +0000 (17:15 -0500)]
hppa: Define __NO_LONG_DOUBLE_MATH so headers are consistent with libm build [BZ #19270]
The attached patch fixes BZ #19270 and the Debian gmt package now builds
successfully. Aside from the comment, the define of __NO_LONG_DOUBLE_MATH
is similar to that in the generic version of glibc.
Build tested on hppa-unknown-linux-gnu with no observed regressions.
Mike Frysinger [Tue, 29 Dec 2015 03:18:22 +0000 (22:18 -0500)]
ia64: fpu: fix gammaf typo [BZ #15421]
The lgamma rewrite in commit
d709042a6e5ab3c360280faad6f9538a34dc8eea
used "gammaf" in this function when it should have used "gamma".
Dmitry V. Levin [Wed, 23 Dec 2015 20:39:42 +0000 (20:39 +0000)]
Fix getaddrinfo bug number in ChangeLog and NEWS files
This amends commit
34a9094f49241ebb72084c536cf468fd51ebe3ec
that erroneously mentions number 11869 instead of 11884.
Torvald Riegel [Tue, 14 Jul 2015 19:58:34 +0000 (21:58 +0200)]
Do not violate mutex destruction requirements.
POSIX and C++11 require that a thread can destroy a mutex if no other
thread owns the mutex, is blocked on the mutex, or will try to acquire
it in the future. After destroying the mutex, it can reuse or unmap the
underlying memory. Thus, we must not access a mutex' memory after
releasing it. Currently, we can load the private flag after releasing
the mutex, which is fixed by this patch.
See https://sourceware.org/bugzilla/show_bug.cgi?id=13690 for more
background.
We need to call futex_wake on the lock after releasing it, however. This
is by design, and can lead to spurious wake-ups on unrelated futex words
(e.g., when the mutex memory is reused for another mutex). This behavior
is documented in the glibc-internal futex API and in recent drafts of the
Linux kernel's futex documentation (see the draft_futex branch of
git://git.kernel.org/pub/scm/docs/man-pages/man-pages.git).
Florian Weimer [Wed, 23 Dec 2015 16:23:33 +0000 (17:23 +0100)]
malloc: Update comment for list_lock
Carlos Eduardo Seo [Wed, 9 Dec 2015 20:48:04 +0000 (18:48 -0200)]
powerpc: Export __parse_hwcap_and_convert_at_platform to libc.a.
Commit
67385a01d229751569b6aac067ffdcd813a15d7a added a new feature for
powerpc, where we store HWCAP/Platform bits in the TCB. In the dynamic
linking case, we use the versioned symbol
'__parse_hwcap_and_convert_at_platform' to verify if this feature is
available. However, the same symbol was not exported to libc.a, making
it not possible for GCC to check for it prior to link time.
Carlos Eduardo Seo [Wed, 4 Nov 2015 21:30:49 +0000 (19:30 -0200)]
powerpc: Add basic support for POWER9 sans hwcap.
This patch adds the minimum changes for supporting the POWER9 processor.
Samuel Thibault [Tue, 22 Dec 2015 13:39:19 +0000 (14:39 +0100)]
Harmonize generic stdio-lock support with nptl
This fixes build when _IO_funlockfile is a macro, fixes build where
_IO_acquire_lock_clear_flags2 is used, and fixes unlocking on unexpected
stack unwind.
* sysdeps/generic/stdio-lock.h [__EXCEPTIONS] (_IO_acquire_lock,
_IO_release_lock ): Use cleanup attribute on new
_IO_acquire_lock_file variable instead of assuming that
_IO_release_lock will be called.
[!__EXCEPTIONS] (_IO_acquire_lock): Define to non-existing
_IO_acquire_lock_needs_exceptions_enabled.
(_IO_acquire_lock_clear_flags2): New macro.
Adhemerval Zanella [Tue, 22 Dec 2015 13:06:36 +0000 (11:06 -0200)]
powerpc: Regenerate libm-test-ulps
* sysdeps/powerpc/fpu/libm-test-ulps: Regenerated.
Florian Weimer [Mon, 21 Dec 2015 15:42:46 +0000 (16:42 +0100)]
malloc: Fix list_lock/arena lock deadlock [BZ #19182]
* malloc/arena.c (list_lock): Document lock ordering requirements.
(free_list_lock): New lock.
(ptmalloc_lock_all): Comment on free_list_lock.
(ptmalloc_unlock_all2): Reinitialize free_list_lock.
(detach_arena): Update comment. free_list_lock is now needed.
(_int_new_arena): Use free_list_lock around detach_arena call.
Acquire arena lock after list_lock. Add comment, including FIXME
about incorrect synchronization.
(get_free_list): Switch to free_list_lock.
(reused_arena): Acquire free_list_lock around detach_arena call
and attached threads counter update. Add two FIXMEs about
incorrect synchronization.
(arena_thread_freeres): Switch to free_list_lock.
* malloc/malloc.c (struct malloc_state): Update comments to
mention free_list_lock.
Siddhesh Poyarekar [Mon, 21 Dec 2015 05:13:04 +0000 (10:43 +0530)]
Consolidate sincos computation for 2.426265 < |x| <
105414350
Like the previous change, exploit the fact that computation for sin
and cos is identical except that it is apart by a quadrant. Also
remove csloww, csloww1 and csloww2 since they can easily be expressed
in terms of sloww, sloww1 and sloww2.
Siddhesh Poyarekar [Mon, 21 Dec 2015 05:11:46 +0000 (10:41 +0530)]
Consolidate sin and cos code for
105414350 <|x|<
281474976710656
The sin and cos computation for this range of input is identical
except for a difference in quadrants by 1. Exploit that fact and the
common argument reduction to reduce computations for sincos.
Siddhesh Poyarekar [Mon, 21 Dec 2015 05:10:32 +0000 (10:40 +0530)]
Consolidate range reduction in sincos for x >
281474976710656
Range reduction needs to be done only once for sin and cos, so copy
over all of the relevant functions (__sin, __cos, reduce_and_compute)
and consolidate common code.
Siddhesh Poyarekar [Mon, 21 Dec 2015 05:08:38 +0000 (10:38 +0530)]
Fix up ChangeLog
Aurelien Jarno [Sun, 13 Dec 2015 21:55:34 +0000 (22:55 +0100)]
i386: move ULPs to i686/multiarch and regenerate new ones for i386
The i386 ULPs are actually the i686/multiarch ones. The i686/multiarch
float ULPs are more precise as the SSE2 version (when available) uses
double for the cosf and sinf functions.
On the other hand the higher precision of the x86 FPU improves the
precision for a few other math functions.
* sysdeps/i386/fpu/libm-test-ulps: Move to ....
* sysdeps/i386/i686/multiarch/fpu/libm-test-ulps: ...here.
* sysdeps/i386/fpu/libm-test-ulps: Regenerate.
Andrew Senkevich [Fri, 18 Dec 2015 23:47:28 +0000 (02:47 +0300)]
Added memset optimized with AVX512 for KNL hardware.
It shows improvement up to 28% over AVX2 memset (performance results
attached at <https://sourceware.org/ml/libc-alpha/2015-12/msg00052.html>).
* sysdeps/x86_64/multiarch/memset-avx512-no-vzeroupper.S: New file.
* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Added new file.
* sysdeps/x86_64/multiarch/ifunc-impl-list.c: Added new tests.
* sysdeps/x86_64/multiarch/memset.S: Added new IFUNC branch.
* sysdeps/x86_64/multiarch/memset_chk.S: Likewise.
* sysdeps/x86/cpu-features.h (bit_Prefer_No_VZEROUPPER,
index_Prefer_No_VZEROUPPER): New.
* sysdeps/x86/cpu-features.c (init_cpu_features): Set the
Prefer_No_VZEROUPPER for Knights Landing.
Torvald Riegel [Thu, 17 Dec 2015 22:30:03 +0000 (23:30 +0100)]
Remove unused variable in math/atest-exp2.c.
Adhemerval Zanella [Sat, 17 Oct 2015 19:56:27 +0000 (16:56 -0300)]
Fix SYSCALL_CANCEL for empty argumetns
This patch fixes the SYSCALL_CANCEL macro for usage with zero argument
number (for instance SYSCALL_CANCEL (pause)) using a similar approach
used for SOCKETCALL_CANCEL.
GLIBC build still does not hit this issue still since SYSCALL_CANCEL
is not currently being used for zero arguments calls.
Tested on i386, x86_64, powerpc64le, aarch64.
* sysdeps/unix/sysdep.h (SYSCALL_CANCEL): Fix macro for zero argument
syscalls.
(__SYSCALL0): New macro.
(__SYSCALL1): Likewise.
(__SYSCALL2): Likewise.
(__SYSCALL3): Likewise.
(__SYSCALL4): Likewise.
(__SYSCALL5): Likewise.
(__SYSCALL6): Likewise.
(__SYSCALL7): Likewise.
(__SYSCALL_CONCAT_X): Likewise.
(__SYSCALL_CONCAT): Likewise.
(__SYSCALL_DIST): Likewise.
(__SYSCALL_CALL): Likewise.
H.J. Lu [Thu, 17 Dec 2015 19:46:49 +0000 (11:46 -0800)]
Provide x32 times
Since times returns 64-bit clock_t on x32, we need to provide x32 times
by redefining INTERNAL_SYSCALL_NCS and INTERNAL_SYSCALL_ERROR_P with
64-bit return type for syscall. All system calls returning 64-bit
integer, which are lseek, time and times, must be handled specially for
x32. lseek is handled by x32 lseek.S and time doesn't check syscall
return. times is the only missed one. Before this patch, there are
0000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 63 d0 movslq %eax,%rdx
^^^^^^^^^^ Incorrect signed extension
a: 48 83 fa f2 cmp $0xfffffffffffffff2,%rdx
e: 75 07 jne 17 <__times+0x17>
10: 3d 00 f0 ff ff cmp $0xfffff000,%eax
^^^^^^^^^^^^^^^^^^^^^ 32-bit compare
15: 77 11 ja 28 <__times+0x28>
17: 48 83 fa ff cmp $0xffffffffffffffff,%rdx
1b: b8 00 00 00 00 mov $0x0,%eax
20: 48 0f 45 c2 cmovne %rdx,%rax
24: c3 retq
After this patch, there are
00000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 83 f8 f2 cmp $0xfffffffffffffff2,%rax
b: 75 08 jne 15 <__times+0x15>
d: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
13: 77 13 ja 28 <__times+0x28>
15: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
19: ba 00 00 00 00 mov $0x0,%edx
1e: 48 0f 44 c2 cmove %rdx,%rax
22: c3 retq
The incorrect signed extension and 32-bit compare are gone.
[BZ #19363]
* sysdeps/unix/sysv/linux/x86_64/x32/times.c: New file.
Adhemerval Zanella [Thu, 17 Dec 2015 14:34:57 +0000 (12:34 -0200)]
Fix POWER7 logb results for negative subnormals (bug 19375)
The optimized POWER7 logb implementation does not use the absolute
value of the word extracted from the input to apply the leading 0-bits
builtin (to ignore the float sign). This patch fixes it by
clearing the signal bit in the resulting word.
It fixes the subnormal tests failures when running on POWER7 ou
newer chip.
Tested on powerpc64le (POWER8).
[BZ# 19375]
* sysdeps/powerpc/power7/fpu/s_logb.c (__logb): Fix return for
negative subnormals.
H.J. Lu [Wed, 16 Dec 2015 13:19:57 +0000 (05:19 -0800)]
Add REGISTERS_CLOBBERED_BY_SYSCALL for x86-64
X86-64 system calls use a different calling convention, which clobbers
CC, %r11 an %rcx registers. Define REGISTERS_CLOBBERED_BY_SYSCALL for
x86-64 inline asm statements.
* sysdeps/unix/sysv/linux/x86_64/sysdep.h
(REGISTERS_CLOBBERED_BY_SYSCALL): New.
(INTERNAL_SYSCALL_NCS): Use it.
(INTERNAL_SYSCALL_NCS_TYPES): Likewise.
Florian Weimer [Wed, 16 Dec 2015 11:39:48 +0000 (12:39 +0100)]
malloc: Fix attached thread reference count handling [BZ #19243]
reused_arena can increase the attached thread count of arenas on the
free list. This means that the assertion that the reference count is
zero is incorrect. In this case, the reference count initialization
is incorrect as well and could cause arenas to be put on the free
list too early (while they still have attached threads).
* malloc/arena.c (get_free_list): Remove assert and adjust
reference count handling. Add comment about reused_arena
interaction.
(reused_arena): Add comments abount get_free_list interaction.
* malloc/tst-malloc-thread-exit.c: New file.
* malloc/Makefile (tests): Add tst-malloc-thread-exit.
(tst-malloc-thread-exit): Link against libpthread.
H.J. Lu [Tue, 15 Dec 2015 21:36:34 +0000 (13:36 -0800)]
Add missing ChangeLog entries
H.J. Lu [Wed, 21 Oct 2015 21:44:23 +0000 (14:44 -0700)]
Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT
According to Silvermont software optimization guide, for 64-bit
applications, branch prediction performance can be negatively impacted
when the target of a branch is more than 4GB away from the branch. Add
the Prefer_MAP_32BIT_EXEC bit so that mmap will try to map executable
pages with MAP_32BIT first. NB: MAP_32BIT will map to lower 2GB, not
lower 4GB, address. Prefer_MAP_32BIT_EXEC reduces bits available for
address space layout randomization (ASLR), which is always disabled for
SUID programs and can only be enabled by setting environment variable,
LD_PREFER_MAP_32BIT_EXEC.
On Fedora 23, this patch speeds up GCC 5 testsuite by 3% on Silvermont.
[BZ #19367]
* sysdeps/unix/sysv/linux/wordsize-64/mmap.c: New file.
* sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/mmap.c: Likewise.
* sysdeps/x86/cpu-features.h (bit_Prefer_MAP_32BIT_EXEC): New.
(index_Prefer_MAP_32BIT_EXEC): Likewise.
H.J. Lu [Tue, 15 Dec 2015 19:46:54 +0000 (11:46 -0800)]
Enable Silvermont optimizations for Knights Landing
Knights Landing processor is based on Silvermont. This patch enables
Silvermont optimizations for Knights Landing.
* sysdeps/x86/cpu-features.c (init_cpu_features): Enable
Silvermont optimizations for Knights Landing.
Andreas Schwab [Thu, 24 Jul 2014 15:32:56 +0000 (17:32 +0200)]
Don't emit invalid extra shift character at block boundary by iconv (bug 17197)
Florian Weimer [Tue, 15 Dec 2015 08:49:17 +0000 (09:49 +0100)]
Fix aliasing violation in tst-rec-dlopen
Joseph Myers [Mon, 14 Dec 2015 22:52:15 +0000 (22:52 +0000)]
Make obsolete syscall wrappers into compat symbols (bug 18472).
Various Linux kernel syscalls have become obsolete over time.
Specifically, the following are obsolete in all kernel versions
supported by glibc, are not present for architectures more recently
added to the kernel, and as such, the wrapper functions for them
should be compat symbols, not in static libc and not available for new
links with shared libc.
* bdflush: in Linux 2.6, does nothing if present.
* create_module get_kernel_syms query_module: Linux 2.4 module
interface, syscalls not present in Linux 2.6.
* uselib: part of the mechanism for loading a.out shared libraries,
irrelevant with ELF.
This patch adds support for syscalls.list to list syscall aliases of
the form NAME@VERSION:OBSOLETED, with SHLIB_COMPAT conditionals being
generated for such aliases. Those five syscalls are then made into
compat symbols (obsoleted in glibc 2.23, so future ports won't have
these symbols at all), with the header <sys/kdaemon.h> declaring
bdflush being removed. When we move to 3.2 as minimum kernel version,
the same can be done for nfsservctl (removed in Linux 3.1) as well.
Tested for x86_64 and x86 (testsuite, as well as checking that the
symbols in question indeed become compat symbols, that they are indeed
omitted from static libc, and that the generated SHLIB_COMPAT
conditionals look right).
[BZ #18472]
* sysdeps/unix/Makefile ($(objpfx)stub-syscalls.c): Handle entries
for the form NAME@VERSION:OBSOLETED and generate SHLIB_COMPAT
conditionals for them.
* sysdeps/unix/make-syscalls.sh (emit_weak_aliases): Likewise.
* sysdeps/unix/sysv/linux/sys/kdaemon.h: Remove file.
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Remove
sys/kdaemon.h.
* sysdeps/unix/sysv/linux/syscalls.list (bdflush): Make into
compat-only syscall, obsoleted in glibc 2.23.
(create_module): Likewise.
(get_kernel_syms): Likewise.
(query_module): Likewise.
(uselib): Likewise.
* manual/sysinfo.texi (System Parameters): Do not mention bdflush.
Aurelien Jarno [Fri, 11 Dec 2015 21:16:34 +0000 (22:16 +0100)]
Cleanup ARM ioperm implementation
Since GLIBC requires a minimum 2.6.32 kernel, the patch cleanups
the ARM ioperm by removing pre-2.4.23 kernel support.
Steve Ellcey [Fri, 11 Dec 2015 17:19:37 +0000 (09:19 -0800)]
Fix indentation.
* sysdeps/ieee754/flt-32/k_rem_pio2f.c (__kernel_rem_pio2f):
Fix indentation.
Steve Ellcey [Fri, 11 Dec 2015 17:08:45 +0000 (09:08 -0800)]
Fix indentation.
* stdio-common/vfscanf.c (_IO_vfscanf_internal): Fix indentation.
Steve Ellcey [Fri, 11 Dec 2015 17:02:16 +0000 (09:02 -0800)]
Fix indentation.
* stdlib/strtol_l.c (__strtol_l): Fix indentation.
Joseph Myers [Fri, 11 Dec 2015 12:45:19 +0000 (12:45 +0000)]
Automate LC_CTYPE generation for tr_TR, update to Unicode 8.0.0 (bug 18491).
This patch makes the automation of Unicode LC_CTYPE generation also
support generating the modified LC_CTYPE used for Turkish (where case
conversions of 'i' and 'I' differ from ASCII conventions), so allowing
that to be more readily kept in sync for future Unicode updates. The
patch includes the locale update generated by the scripts.
Tested for x86_64.
[BZ #18491]
* unicode-gen/unicode_utils.py (to_upper_turkish): New function.
(to_lower_turkish): Likewise.
* unicode-gen/gen_unicode_ctype.py (output_tables): Support
producing output with Turkish case conversions.
(--turkish): New command-line option.
* unicode-gen/Makefile (GENERATED): Add tr_TR.
(tr_TR): New rule.
* locales/tr_TR: Regenerate LC_CTYPE.
Aurelien Jarno [Thu, 10 Dec 2015 21:33:10 +0000 (22:33 +0100)]
grantpt: trust the kernel about pty group and permission mode
According to POSIX the grantpt() function does the following:
The grantpt() function shall change the mode and ownership of the
slave pseudo-terminal device associated with its master
pseudo-terminal counterpart. The fildes argument is a file descriptor
that refers to a master pseudo-terminal device. The user ID of the
slave shall be set to the real UID of the calling process and the
group ID shall be set to an unspecified group ID. The permission
mode of the slave pseudo-terminal shall be set to readable and
writable by the owner, and writable by the group.
Historically the GNU libc has been responsible to setup the permission
mode to 0620 and the group to 'tty' usually number 5, using the pt_chown
helper, badly known for its security issues. With the creation of the
devpts filesytem in the Linux kernel, this responsibility has been moved
to the Linux kernel. The system is responsible to mount the devpts
filesystem in /dev/pts with the options gid=5 and mode=0620. In that
case the GNU libc has nothing to do and pt_chown is not need anymore. So
far so good.
The problem is that by default the devpts filesystem is shared between
all mounts, and that contrary to other filesystem, the mount options are
honored at the second mount, including for the default mount options.
Given it corresponds to mode=0600 without gid parameter (that is the
filesystem GID of the creating process), it's common to see systems
where the devpts filesystem is mounted using these options. It is enough
to run a "mount -t devpts devpts /mychroot/dev/pts" to come into this
situation, and it's unfortunately wrongly used in a lot of scripts
dealing with chroots, or for creating virtual machines images.
When this happens the GNU libc tries to fix the group and permission
mode of the pty nodes, and given it fails to do so for non-root users,
grantpt() almost always fail. It means users are not able to open new
terminals.
This patch changes grantpt() to not enforce this anymore, while still
enforcing minimum security measures to the permission mode. Therefore
the responsibility to follow POSIX is now shared at the system level,
i.e. kernel + system scripts + GNU libc. It stops trying to change the
group, and makes the pty node readable and writable by the owner, and
writable by the group only when originally writable and when the group
is the tty one.
As a result, on a system wrongly mounted with gid=0 and mode=0600, the
pty nodes won't be accessible by the tty group, but the grantpt()
function will succeed and users will have a working system. The system
is not fully POSIX compliant (which might be an admin choice to default
to "mesg n" mode), but the GNU libc is not to blame here, as without the
pt_chown helper it can't do anything.
With this patch there should not be any reason left to build the GNU
libc with the --enable-pt_chown configure option on a GNU/Linux system.
Paul Eggert [Thu, 10 Dec 2015 16:17:18 +0000 (08:17 -0800)]
Split large string section; add truncation advice
* manual/examples/strncat.c: Remove.
This example was misleading, as the code would have undefined
behavior if "hello" was longer than SIZE. Anyway, the manual
shouldn't encourage strncpy+strncat for this sort of thing.
* manual/string.texi (Copying Strings and Arrays): Split into
three sections Copying Strings and Arrays, Concatenating Strings,
and Truncating Strings, as this section was way too long. All
cross-referenced changed. Add advice about string-truncation
functions. Remove misleading strncat example.
Carlos O'Donell [Thu, 10 Dec 2015 05:48:15 +0000 (00:48 -0500)]
Document best practice for disconnected NSS modules.
NSS modules which can run in disconnected modes should
return NSS_STATUS_NOTFOUND and SUCCESS in order to follow
best practice for such modules and ensure user applications
can have these modules configured without causing problems
if the data sources are not connected.
Mike FABIAN [Thu, 10 Dec 2015 05:30:51 +0000 (00:30 -0500)]
Update to Unicode 8.0.0.
Update __STDC_ISO_10646__ to 201505L for Unicode 8.0.0.
Update character encoding, ctype, and transliteration tables.
New scripts autogenerate transliteration tables.
Mike FABIAN [Thu, 10 Dec 2015 04:08:36 +0000 (23:08 -0500)]
Update da, nb, nn, and sv locales (Bug 89)
Add transliteration rules for da, nb, nn, and sv locales.
Carlos O'Donell [Thu, 10 Dec 2015 03:27:41 +0000 (22:27 -0500)]
Update transliteration support to Unicode 7.0.0.
The transliteration files are now autogenerated from upstream Unicode
data.
Carlos O'Donell [Thu, 10 Dec 2015 03:24:26 +0000 (22:24 -0500)]
Regenerate locale/C-translit.h.
Mike FABIAN [Thu, 10 Dec 2015 02:51:26 +0000 (21:51 -0500)]
Generic updates to transliterations.
- Remove duplicate transliterations for U+0152 and U+0153 from
C-translit.h.in.
- Change Ö U+00D6 LATIN CAPITAL LETTER O WITH STROKE → O
(instead of → OE)
- Change ö U+00F6 LATIN SMALL LETTER O WITH STROKE → o
(instead of → oe)
- Add ₹ U+20B9 INDIAN RUPEE SIGN → INR
- Add ₫ U+20AB DONG SIGN → Dong (in addition to "₫ → Đồng")
- Add many others from
http://unicode.org/cldr/trac/browser/trunk/common/transforms/Latin-ASCII.xml
- Add some more currency signs suggested by Marko Myllynen
- Add another patch with more characters by Marko Myllynen