Commit Graph

32556 Commits

Author SHA1 Message Date
Wilco Dijkstra
2c2245b92c Fix build failure on tilepro due to unsupported atomics
* malloc/malloc.c (malloc_state): Use int for have_fastchunks since
        not all targets support atomics on bool.
2017-10-18 12:20:55 +01:00
Joseph Myers
13c92696d2 Use __f128 to define FLT128_* constants in include/float.h for old GCC.
When using compilers before GCC 7, include/float.h provides fallback
definitions of FLT128_* constants.  These definitions use 'Q' constant
suffixes, which works for configurations with _Float128 ABI-distinct
from long double, but not where it has the same ABI as long double.
This patch changes the definitions to use the __f128 macro from
<bits/floatn.h>, so allowing them to work in the non-distinct
_Float128 case (where they are used in building glibc tests, not for
building glibc itself) as well.

Tested (a) with build-many-glibcs.py with GCC 6 (installed stripped
shared libraries unchanged by the patch); (b) with
build-many-glibcs.py with GCC 6 together with the main patch to enable
float128 aliases; (c) for x86_64 with both GCC 6 and GCC 7.

	* include/float.h [!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 &&
	__GLIBC_USE (IEC_60559_TYPES_EXT)] (FLT128_MAX): Define using
	__f128.
	[!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE
	(IEC_60559_TYPES_EXT)] (FLT128_EPSILON): Likewise.
	[!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE
	(IEC_60559_TYPES_EXT)] (FLT128_MIN): Likewise.
	[!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE
	(IEC_60559_TYPES_EXT)] (FLT128_TRUE_MIN): Likewise.
2017-10-17 20:16:01 +00:00
Adhemerval Zanella
71d85045fd posix: Add p{readv,writev}2 flags to generic uio-ext.h
* bits/uio-ext.h (RWF_HIPRI, RWF_DSYNC, RWF_SYNC, RWF_NOWAIT): New
	defines.
2017-10-17 17:52:04 -02:00
Wilco Dijkstra
3381be5cde Improve malloc initialization sequence
The current malloc initialization is quite convoluted. Instead of
sometimes calling malloc_consolidate from ptmalloc_init, call
malloc_init_state early so that the main_arena is always initialized.
The special initialization can now be removed from malloc_consolidate.
This also fixes BZ #22159.

Check all calls to malloc_consolidate and remove calls that are
redundant initialization after ptmalloc_init, like in int_mallinfo
and __libc_mallopt (but keep the latter as consolidation is required for
set_max_fast).  Update comments to improve clarity.

Remove impossible initialization check from _int_malloc, fix assert
in do_check_malloc_state to ensure arena->top != 0.  Fix the obvious bugs
in do_check_free_chunk and do_check_remalloced_chunk to enable single
threaded malloc debugging (do_check_malloc_state is not thread safe!).

	[BZ #22159]
	* malloc/arena.c (ptmalloc_init): Call malloc_init_state.
	* malloc/malloc.c (do_check_free_chunk): Fix build bug.
	(do_check_remalloced_chunk): Fix build bug.
	(do_check_malloc_state): Add assert that checks arena->top.
	(malloc_consolidate): Remove initialization.
	(int_mallinfo): Remove call to malloc_consolidate.
	(__libc_mallopt): Clarify why malloc_consolidate is needed.
2017-10-17 18:55:16 +01:00
Wilco Dijkstra
e956075a5a Use relaxed atomics for malloc have_fastchunks
Currently free typically uses 2 atomic operations per call.  The have_fastchunks
flag indicates whether there are recently freed blocks in the fastbins.  This
is purely an optimization to avoid calling malloc_consolidate too often and
avoiding the overhead of walking all fast bins even if all are empty during a
sequence of allocations.  However using catomic_or to update the flag is
completely unnecessary since it can be changed into a simple boolean and
accessed using relaxed atomics.  There is no change in multi-threaded behaviour
given the flag is already approximate (it may be set when there are no blocks in
any fast bins, or it may be clear when there are free blocks that could be
consolidated).

Performance of malloc/free improves by 27% on a simple benchmark on AArch64
(both single and multithreaded). The number of load/store exclusive instructions
is reduced by 33%. Bench-malloc-thread speeds up by ~3% in all cases.

	* malloc/malloc.c (FASTCHUNKS_BIT): Remove.
	(have_fastchunks): Remove.
	(clear_fastchunks): Remove.
	(set_fastchunks): Remove.
	(malloc_state): Add have_fastchunks.
	(malloc_init_state): Use have_fastchunks.
	(do_check_malloc_state): Remove incorrect invariant checks.
	(_int_malloc): Use have_fastchunks.
	(_int_free): Likewise.
	(malloc_consolidate): Likewise.
2017-10-17 18:43:31 +01:00
Wilco Dijkstra
e4dd4ace56 Inline tcache functions
The functions tcache_get and tcache_put show up in profiles as they
are a critical part of the tcache code.  Inline them to give tcache
a 16% performance gain.  Since this improves multi-threaded cases
as well, it helps offset any potential performance loss due to adding
single-threaded fast paths.

	* malloc/malloc.c (tcache_put): Inline.
	(tcache_get): Inline.
2017-10-17 18:25:43 +01:00
Adhemerval Zanella
8867c3c14b Fix armv7-a compiler option name
This patch fixes the wrong -march name option used to define
the ARMv7-A glibc variant pushed on commit 3d26560.
2017-10-17 13:32:03 -02:00
Aurelien Jarno
5bf58bc750 New locale ca_ES@valencia [BZ #2522]
The Valencian (meridional Catalan) locale is basically a copy of the
Catalan locale. The point of having a separate locale is only for PO
translations. This locale is already provided by several distributions
and is already supported by various projects like LibreOffice, Mozilla,
Gnome, KDE.

	Aurelien Jarno  <aurelien@aurel32.net>
	[BZ #2522]
	* localedata/locales/ca_ES@valencia: New file.
	* localedata/SUPPORTED: Add ca_ES@valencia/UTF-8.
2017-10-17 17:07:16 +02:00
Romain Naour
386e1c26ac Let signbit use the builtin in C++ mode with gcc < 6.x (bug 22296)
When using gcc < 6.x, signbit does not use the type-generic
__builtin_signbit builtin, instead it uses __MATH_TG.
However, when library support for float128 is available, __MATH_TG uses
__builtin_types_compatible_p, which is not available in C++ mode.

On the other hand, libstdc++ undefines (in cmath) many macros from
math.h, including signbit, so that it can provide its own functions.
However, during its configure tests, libstdc++ just tests for the
availability of the macros (it does not undefine them, nor does it
provide its own functions).

Finally, libstdc++ configure tests include math.h and get the definition
of signbit that uses __MATH_TG (and __builtin_types_compatible_p).
Since libstdc++ does not undefine the macros during its configure
tests, they fail.

This patch lets signbit use the builtin in C++ mode when gcc < 6.x is
used. This allows the configure test in libstdc++ to work.

Tested for x86_64.

	[BZ #22296]
	* math/math.h: Let signbit use the builtin in C++ mode with gcc
	< 6.x

Cc: Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
Cc: Joseph Myers <joseph@codesourcery.com>
2017-10-17 12:06:44 -02:00
Adhemerval Zanella
3d26560135 Add build-many-glibcs.py arm-linux-gnueabihf-v7{-disable-multiarch}
This patch adds two extra configuration for arm-linux-gnueabihf to
cover for multiarch support:

  1. arm-linux-gnueabihf-v7a: enables multiarch support by using
     -march=armv7a.

  2. Same as 1. but with --disable-multiarch.

Check with build-many-glibcs.py for both options.

	* scripts/build-many-glibcs.py (Context.add_all_configs):
	Add arm-linux-gnueabihf multiarch extra_glibcs.
2017-10-17 12:01:22 -02:00
Adhemerval Zanella
4e17c78e4a Add common ifunc-init.h header
This patch moves the generic definition from x86_64 init-arch
to a common header ifunc-init.h.  No functional changes is expected.

Checked on a x86_64-linux-gnu build.

	* sysdeps/generic/ifunc-init.h: New file.
	* sysdeps/x86/init-arch.h: Use generic ifunc-init.h.
2017-10-17 12:01:22 -02:00
Mike FABIAN
56a752ab6a Place monetary symbol in el_GR and el_CY after the amount
CLDR uses this pattern as well.

	[BZ #22019]
	* localedata/locales/el_GR: Set n_cs_precedes to 0.
	* localedata/locales/el_CY: copy "el_GR" because it is identical.
	* stdlib/tst-strfmon_l.c: adapt test case.
2017-10-17 15:29:50 +02:00
Joseph Myers
c38a4bfd59 Move some float128 symbol version definitions.
With support for _Float128 functions on platforms where that type has
the same ABI as long double, as well as on platforms where it is
ABI-distinct, those functions will need to be exported from glibc's
shared libraries at appropriate symbol versions in each case.

This patch avoids duplication of lists of symbols to export by moving
the symbols other than __* to math/Versions and stdlib/Versions.
There, they are conditional on <float128-abi.h> defining
FLOAT128_VERSION and a default version of that header is added that
does not define that macro.  Enabling the float128 function aliases
will then include adding a sysdeps/ieee754/ldbl-128/float128-abi.h
that defines FLOAT128_VERSION to GLIBC_2.27.  Symbols __* remain in
sysdeps/ieee754/float128/Versions; those symbols should be present
only once per floating-point format, not once per type.

Note that if any platforms currently lacking support for a type with
binary128 format get glibc support for such a type in future (whether
only as _Float128, or also as a new long double format), and new libm
functions (present for all types) have been added by then, additional
macros will be needed to allow such functions to get a version of the
form "GLIBC_2.28 if the platform had _Float128 support by then, or the
later version at which that platform had _Float128 support added".
This is not however a preexisting condition, but would have applied
equally to the existing support for _Float128 as an ABI-distinct
type.  New all-type libm functions should just be added to the
appropriate symbol version (currently GLIBC_2.27) for all types, with
such special-case handling for _Float128 versions (and _Float64x as
well in future) waiting until someone actually wants to add support
for _Float128 to an existing platform after a release in which that
platform and a post-2.26 libm function had support but that platform
lacked _Float128 support.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by this patch.  Also tested in conjunction
with the remaining changes to enable float128 aliases.

	* sysdeps/generic/float128-abi.h: New file.
	* sysdeps/ieee754/float128/Versions (FLOAT128_VERSION): Move
	non-__prefixed symbols to ....
	* math/Versions: ... here.  Include <float128-abi.h>.
	* stdlib/Versions ... and here.  Include <float128-abi.h>
2017-10-16 22:04:42 +00:00
Florian Weimer
76009b2639 version.h: Switch to ".9000" as the suffix for the development version 2017-10-16 21:39:18 +02:00
Florian Weimer
7ece6cd509 malloc: Use compat_symbol_reference in libmcheck [BZ #22050]
Since glibc 2.24, __malloc_initialize_hook is a compat symbol.  As a
result, the link editor does not export a definition of
__malloc_initialize_hook from the main program, so that it no longer
interposes the variable definition in libc.so.  Specifying the symbol
version restores the exported symbol.
2017-10-16 20:52:34 +02:00
Florian Weimer
d8287b36ab malloc: Do not compile mcheck-init.o as libc module
Otherwise, this will lead to a link failure because the reference
to mcheck is hidden.
2017-10-16 20:50:04 +02:00
Carlos O'Donell
3480ddc40b shlib-compat: Update documentation of the compat_symbol_reference macro 2017-10-16 20:43:28 +02:00
Joseph Myers
596f70134a Support running libm tests for float128 as alias for long double.
This patch adds support for running libm tests for float128 in the
case where the float128 functions are aliases of long double
functions.  In this case, the sysdeps Makeconfig file
(i.e. sysdeps/ieee754/ldbl-128/Makeconfig) will need to define
"float128-alias-fcts = yes" to enable the tests.

Tested for x86_64.  Also tested with build-many-glibcs.py; installed
stripped shared libraries are unchanged by the patch.  Also tested
together with changes to enable the float128 aliases.

	* math/Makefile (test-types): Add
	$(type-float128-$(float128-alias-fcts)).
	* math/test-float128.h (TYPE_STR): Define conditional on
	[FLT128_MANT_DIG == LDBL_MANT_DIG].
	(ULP_IDX): Likewise.
	(ULP_I_IDX): Likewise.
2017-10-16 13:28:30 +00:00
Joseph Myers
02010e79ce Support strtof128 etc. aliases.
This patch adds support for building strtof128, wcstof128, strtof128_l
and wcstof128_l as aliases, in the case of __HAVE_FLOAT128 &&
!__HAVE_DISTINCT_FLOAT128.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by this patch.  Also tested together with
changes to enable float128 aliases.

	* stdlib/strtold.c: Include <bits/floatn.h>
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (strtof128): Define
	and later undefine as macro.  Define as weak alias if
	[!USE_WIDE_CHAR].
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (wcstof128): Define
	and later undefine as macro.  Define as weak alias if
	[USE_WIDE_CHAR].
	* sysdeps/ieee754/ldbl-128/strtold_l.c [__HAVE_FLOAT128 &&
	!__HAVE_DISTINCT_FLOAT128] (strtof128_l): Define and later
	undefine as macro.  Define as weak alias if [!USE_WIDE_CHAR].
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (wcstof128_l):
	Define and later undefine as macro.  Define as weak alias if
	[USE_WIDE_CHAR].
	* sysdeps/ieee754/ldbl-64-128/strtold_l.c: Include
	<bits/floatn.h>.
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (strtof128_l):
	Define and later undefine as macro.  Define as weak alias if
	[!USE_WIDE_CHAR].
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (wcstof128_l):
	Define and later undefine as macro.  Define as weak alias if
	[USE_WIDE_CHAR].
2017-10-16 13:22:11 +00:00
Carlos O'Donell
ea91c315bc locale: Don't use \n with record_verbose messages.
Recorded verbose messages no longer need to pass \n in their
message string since the record_verbose function adds \n to
the messages (like error and warnings do also). The avoids
seeing a double \n for verbose messages.

Signed-off-by: Carlos O'Donell <carlos@redhat.com>
2017-10-15 14:25:26 -07:00
H.J. Lu
8e57c9432a Silence -O3 -Wall warning in malloc/hooks.c with GCC 7 [BZ #22052]
realloc_check has

  unsigned char *magic_p;
...
  __libc_lock_lock (main_arena.mutex);
  const mchunkptr oldp = mem2chunk_check (oldmem, &magic_p);
  __libc_lock_unlock (main_arena.mutex);
  if (!oldp)
    malloc_printerr ("realloc(): invalid pointer");
...
  if (newmem == NULL)
    *magic_p ^= 0xFF;

with

static void malloc_printerr(const char *str) __attribute__ ((noreturn));

GCC 7 -O3 warns

hooks.c: In function ‘realloc_check’:
hooks.c:352:14: error: ‘magic_p’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
     *magic_p ^= 0xFF;

due to the GCC bug:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82090

This patch silences GCC 7 by using DIAG_IGNORE_NEEDS_COMMENT.

	[BZ #22052]
	* malloc/hooks.c (realloc_check): Use DIAG_IGNORE_NEEDS_COMMENT
	to silence -O3 -Wall warning with GCC 7.
2017-10-15 08:16:37 -07:00
H.J. Lu
a4777c46af Add a test for profiling static executable
The function, main, is added to profiling output of static executable
which must link against gcrt1.o.

	* Makeconfig (+link-static-before-libc): Use the first of
	$(CRT-$(@F)) and $(csu-objpfx)$(static-start-installed-name).
	* gmon/Makefile (tests): Add tst-gmon-static.
	(tests-static): Likewise.
	(CFLAGS-tst-gmon-static.c): New.
	(CRT-tst-gmon-static): Likewise.
	(DEFAULT-LDFLAGS-tst-gmon-static): Likewise.
	(tst-gmon-static-ENV): Likewise.
	(tests-special): Likewise.
	($(objpfx)tst-gmon-static.out): Likewise.
	(clean-tst-gmon-static-data): Likewise.
	($(objpfx)tst-gmon-static-gprof.out): Likewise.
	* gmon/tst-gmon-static-gprof.sh: New file.
	* gmon/tst-gmon-static.c: Likewise.
2017-10-14 12:58:55 -07:00
Carlos O'Donell
bc3821bb3b locale: No warning for non-symbolic character (bug 22295)
In "Is it OK to write ASCII strings directly into locale source files?"
https://sourceware.org/ml/libc-alpha/2017-07/msg00807.html there is
universal consensus that we do not have to keep writing <Uxxxx> symbolic
characters in locale files.

Ulrich Drepper's historical comment was that symbolic characters were
used for the eventuality of converting the source files to any encoding
system. Fast forward to today and UTF-8 is the standard. So the
requirement of <Uxxxx> is hard to justify.

Zack Weinberg's excellent scripts are coming along we can use these to
find instances of human errors in the scripts:
https://sourceware.org/ml/libc-alpha/2017-07/msg00860.html
https://sourceware.org/ml/libc-alpha/2017-08/msg00136.html

It still won't be easy to distinguish from i for í, but that's still the
case for <Uxxxx> characters which humans can't read either.

Since we all agreed that we should be able to use non-symbolic (<Uxxxx>)
characters in locale files, the following change removes the verbose
warning that is raised if you use non-symbolic characters in the locale
file.

Signed-off-by: Carlos O'Donell <carlos@redhat.com>
2017-10-13 22:30:19 -07:00
Carlos O'Donell
a3e23a2c1d locale: Allow "" int_curr_Symbol (bug 22294)
The builtin POSIX locale has "" as the international currency symbol,
but a non-builtin locale may not have such a blank int_curr_symbol.

Therefore to support non-builtin locales with similar "" int_curr_symbol
we adjust the LC_MONETARY parser to allow the normal 4-character
int_curr_symbol *and* the empty "" no symbol. Anything else remains
invalid.

Tested by building all the locales.  Tested also with a custom C.UTF-8
locale with "" for int_curr_symbol.

Signed-off-by: Carlos O'Donell <carlos@redhat.com>
2017-10-13 22:30:19 -07:00
Carlos O'Donell
f16491eb8e locale: Fix localedef exit code (Bug 22292)
The error and warning handling in localedef, locale, and iconv
is a bit of a mess.

We use ugly constructs like this:
      WITH_CUR_LOCALE (error (1, errno, gettext ("\
cannot read character map directory `%s'"), directory));

to issue errors, and read error_message_count directly from the
error API to detect errors. The problem with that is that the
code also uses error to print warnings, and informative messages.
All of this leads to problems where just having warnings will
produce an exit status as-if errors had been seen.

To fix this situation I have adopted the following high-level
changes:
* All errors are counted distinctly.
* All warnings are counted distinctly.
* All informative messages are not counted.
* Increasing verbosity cannot generate *more* errors, and
  it previously did for errors conditional on verbose,
  this is now fixed.
* Increasing verbosity *can* generate *more* warnings.
* Making the output quiet cannot generate *fewer* errors,
  and it previously did for errors conditional on be_quiet,
  this is now fixed.
* Each of error, warning, and informative message has it's
  own function to call defined in record-status.h, and they
  are: record_error, record_warning, and record_verbose.
* The record_error function always records an error, but
  conditional on be_quiet may not print it.
* The record_warning function always records a warning,
  but conditional on be_quiet may not print it.
* The record_verbose function only prints the verbose
  message if verbose is true and be_quiet is false.

This has allowed the following fix:
* Previously any warnings were being treated as errors
  because they incremented error_message_count, but now
  we properly return an exit status of 1 if there are
  warnings but output was generated.

All of this allows localedef to correctly decide if errors,
or warnings were present, and produce the correct exit code.

The locale and iconv programs now also use record-status.h
and we have removed the WITH_CUR_LOCALE hack, and instead
have internal push_locale/pop_locale functions centralized
in the record routines.

Signed-off-by: Carlos O'Donell <carlos@redhat.com>
2017-10-13 22:30:18 -07:00
Carlos O'Donell
8dc8be75d2 localedata: Reorganize Unicode LC_CTYPE inclusion.
The commit does the following things:

* Move non-transliteration Unicode generated data to i18n_ctype.
* Copy the i18n_ctype data into i18n and add transliteration.

In the future, any locale which needs Unicode LC_CTYPE data can
also just use `copy i18n_ctype` and get the base character classes
and maps without transliteration.

Tested by compiling all the locales and my prototype C.UTF-8 which
uses it.

Signed-off-by: Carlos O'Donell <carlos@redhat.com>
2017-10-13 22:29:52 -07:00
Joseph Myers
18c08b9641 Support strfromf128 alias.
This patch adds support for building strfromf128 as an alias of
strfroml, in the case of __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by this patch.  Also tested together with
changes to enable float128 aliases.

	* stdlib/strfroml.c: Include <bits/floatn.h>.
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (strfromf128):
	Define before include of <stdlib.h> and undefine afterwards, then
	define as weak alias.
2017-10-13 23:09:48 +00:00
Joseph Myers
f8718a9e16 Use libm_alias_ldouble_other in ldbl-64-128/s_nextafterl.c.
This patch makes ldbl-64-128/s_nextafterl.c restore the default
weak_alias definition and use libm_alias_ldouble_other (having
undefined and redefined weak_alias for the include of
ldbl-128/s_nextafterl.c, so the libm_alias_ldouble use in the latter
file is ineffective).

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by this patch.  Also tested together with
changes to enable float128 aliases.

	* sysdeps/ieee754/ldbl-64-128/s_nextafterl.c (weak_alias):
	Undefine and restore default definition.  Use
	libm_alias_ldouble_other.
2017-10-13 23:05:15 +00:00
Peter Zelezny
e4f530da0d nptl: Preserve error in setxid thread broadcast in coredumps [BZ #22153] 2017-10-13 22:51:56 +02:00
James Clarke
8644588807 Fix TLS relocations against local symbols on powerpc32, sparc32 and sparc64
Normally, TLS relocations against local symbols are optimised by the linker
to be absolute.  However, gold does not do this, and so it is possible to
end up with, for example, R_SPARC_TLS_DTPMOD64 referring to a local symbol.
Since sym_map is left as null in elf_machine_rela for the special local
symbol case, the relocation handling thinks it has nothing to do, and so
the module gets left as 0.  Havoc then ensues when the variable in question
is accessed.

Before this fix, the main_local_gold program would receive a SIGBUS on
sparc64, and SIGSEGV on powerpc32.  With this fix applied, that test now
passes like the rest of them.

	* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_rela):
	Assign sym_map to be map for local symbols, as TLS relocations
	use sym_map to determine whether the symbol is defined and to
	extract the TLS information.
	* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_rela): Likewise.
2017-10-13 16:14:16 -03:00
Tulio Magno Quites Machado Filho
e8dbd6a36d powerpc: Avoid putting floating point values in memory [BZ #22189]
[BZ #22189]
	* sysdeps/powerpc/fpu/math_private.h (math_opt_barrier):
	(math_force_eval): Add powerpc version.
2017-10-13 15:44:39 -03:00
Tulio Magno Quites Machado Filho
179dcdb7af [BZ #22142] powerpc: Fix the carry bit on mpn_[add|sub]_n on POWER7
Fix the ifdef clause that was being used in the opposite way, setting
a wrong value of the carry bit.

This is also correcting 2 memory accesses that were mistakenly referring
to r0 while they were supposed to mean the immediate value 0.

	[BZ #22142]
	* stdio-common/tst-printf.c (fp_test): Add tests for DBL_MAX and
	-DBL_MAX.
	(do_test): Likewise.
	* stdio-common/tst-printf.sh: Likewise.
	* sysdeps/powerpc/powerpc64/power7/add_n.S: Invert the initial
	ifdef clause in order to set the carry bit right.  Replace r0 by
	0 without changing the behavior.
2017-10-13 15:44:39 -03:00
Joseph Myers
006e766437 Use libm_alias_ldouble for SPARC fabsl.
This patch makes SPARC fabsl implementation use libm_alias_ldouble, to
prepare them for also defining _Float128 function aliases.

Tested with build-many-glibcs.py that installed stripped shared
libraries (sparc64-linux-gnu and sparcv9-linux-gnu) are unchanged by
the patch.

	* sysdeps/sparc/sparc32/fpu/s_fabsl.c: Include
	<libm-alias-ldouble.h>.
	(fabsl): Define using libm_alias_ldouble.
	* sysdeps/sparc/sparc64/fpu/s_fabsl.c: Include
	<libm-alias-ldouble.h>.
	(fabsl): Define using libm_alias_ldouble.
2017-10-13 16:43:18 +00:00
Joseph Myers
1def91b304 Fix ldbl-opt/w_lgamma_compatl.c libm_alias_ldouble_other usage.
Testing with changes to enable _Float128 function aliases shows that
the libm_alias_ldouble_other usage in ldbl-opt/w_lgamma_compatl.c does
not in fact work.  Furthermore, it is unnecessary; the relevant
aliases get created through w_lgammal_compat2.c.  This patch removes
the problem code.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by the patch.  Also tested in conjunction with
patches to enable _Float128 function aliases.

	* sysdeps/ieee754/ldbl-opt/w_lgamma_compatl.c [BUILD_LGAMMA]:
	Remove conditional code.
2017-10-13 16:38:37 +00:00
Joseph Myers
7d25d410c2 Fix ldbl-opt/s_clog10l.c libm_alias_ldouble_other usage.
Testing with changes to enable _Float128 function aliases shows that
the libm_alias_ldouble_other usage in ldbl-opt/s_clog10l.c does not in
fact work, because __clog10l is defined with long_double_symbol rather
than as a normal C alias.  This patch fixes this by renaming the
__clog10l__internal alias (not strictly necessary, but avoids a hack
with "__clog10l_interna" / "__clog10l__interna" as first argument to
libm_alias_ldouble_other) and using the renamed alias when calling
libm_alias_ldouble_other.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanges by the patch.  Also tested in conjunction with
patches to enable _Float128 function aliases.

	* sysdeps/ieee754/ldbl-opt/s_clog10l.c (__clog10l__internal):
	Rename to __clog10_internal_l.
	(__clog10_internal_l): Define aliases using
	libm_alias_ldouble_other instead of using libm_alias_ldouble_other
	with __clog10.
2017-10-13 16:36:45 +00:00
Rajalakshmi Srinivasaraghavan
077ee12978 Benchtests for sinf, cosf and sincosf
Numbers used from cos and sin inputs.
2017-10-13 14:19:45 +05:30
Szabolcs Nagy
5ba41de9ed fix posix/tst-spawn test
The test spawns two children but only waited for one.
The fix avoids printing to stderr.

	* posix/tst-spawn.c (do_test): Wait for both children.
2017-10-12 15:07:34 +01:00
H.J. Lu
7bacdcfc42 Update ChangeLog entry for commit d165ca6498 2017-10-12 05:31:50 -07:00
H.J. Lu
d165ca6498 Support profiling PIE [BZ #22284]
Since PIE can be loaded at any address, we need to subtract load address
from PCs.

	[BZ #22284]
	* gmon/Makefile [$(have-fpie)$(build-shared) == yesyes] (tests,
	tests-pie): Add tst-gmon-pie.
	(CFLAGS-tst-gmon-pie.c): New.
	(CRT-tst-gmon-pie): Likewise.
	(tst-gmon-pie-ENV): Likewise.
	[$(have-fpie)$(build-shared) == yesyes] (tests-special): Likewise.
	($(objpfx)tst-gmon-pie.out): Likewise.
	(clean-tst-gmon-pie-data): Likewise.
	($(objpfx)tst-gmon-pie-gprof.out): Likewise.
	* gmon/gmon.c [PIC]: Include <link.h>.
	[PIC] (callback): New function.
	(write_hist): Add an argument for load address.  Subtract load
	address from PCs.
	(write_call_graph): Likewise.
	(write_gmon): Call __dl_iterate_phdr to get load address, pass
	it to write_hist and write_call_graph.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2017-10-12 03:49:40 -07:00
Joseph Myers
bc9620d040 Run libm long double tests for long double = double.
All interfaces in the glibc API ought to be covered by the testsuite,
even where they alias other interfaces.  This patch arranges for libm
tests to be run for long double when it aliases double; previously
those tests were run only for the floating-point types with distinct
formats.  The long double tests are made to use the double ulps values
in this case, as having a separate duplicate set of ulps for them
seems unnecessary; to accommodate that, the test-<type>.h headers now
specify the macro indexing into the ulps array explicitly instead of
having it computed from PREFIX.

Nothing special is done about vector function tests.  None are
supported for any long double = double platforms, and supporting
vector functions for a type alias such as _Float32 would not simply
fall out of adding the scalar aliases for that type - it would require
vector function wrappers like those for *_finite (or, better, a new
GCC feature to allow specifying the asm name for vector functions
independently of that for scalar ones, as previously discussed), so it
seems reasonable to require the sysdeps makefile setting of
libmvec-tests to be updated if any such tests are to be run for type
aliases.

Tested for x86_64 and arm.

	* math/Makefile (test-types-basic): New variable.
	(test-types): Likewise.
	(libm-test-support): Use $(test-types) instead of $(types).
	(libm-tests-base-normal): Likewise.
	(libm-tests-base-finite): Likewise.
	(libm-tests-base-inline): Likewise.
	(generated): Likewise.
	($(objpfx)libm-test-support-$(t).c): Likewise.
	(libm-tests-for-type iterator): Likewise.
	(libm-test-support iterator): Likewise.
	* math/libm-test-support.c (ulp_i_idx): Use ULP_I_IDX.
	(ulp_idx): Use ULP_IDX.
	* math/test-ldouble.h: Include <float.h>.
	(TYPE_STR): Define conditional on [LDBL_MANT_DIG == DBL_MANT_DIG].
	(ULP_IDX): New macro.
	(ULP_I_IDX): Likewise.
	* math/test-double.h (ULP_IDX): Likewise.
	(ULP_I_IDX): Likewise.
	* math/test-float.h (ULP_IDX): Likewise.
	(ULP_I_IDX): Likewise.
	* math/test-float128.h (ULP_IDX): Likewise.
	(ULP_I_IDX): Likewise.
2017-10-11 17:46:19 +00:00
Adhemerval Zanella
09c76a7409 Linux: Consolidate {RTLD_}SINGLE_THREAD_P definition
Current GLIBC has two ways to implement the single thread optimization
on syscalls to avoid calling the cancellation path: either by using
global variables (__{libc,pthread}_multiple_thread) or by accessing
the TCB field (defined by TLS_MULTIPLE_THREADS_IN_TCB).  Both the
variables and the macros to acces its value are defined in the
architecture sysdep-cancel.h header.

This patch consolidates its definition on only one header,
sysdeps/unix/sysv/linux/sysdep-cancel.h, and adds a new define
(SINGLE_THREAD_BY_GLOBAL) which the architecture defines if it prefer
to use the global variables instead of the TCB field.  This is an
optimization, so if the architecture does not define it, the TCB
method will be used as default.

Checked on x86_64-linux-gnu and on a build with major touched
ABIs (aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabihf,
hppa-linux-gnu, i686-linux-gnu, m68k-linux-gnu, microblaze-linux-gnu,
mips-linux-gnu, mips64-linux-gnu, powerpc-linux-gnu,
powerpc64le-linux-gnu, s390-linux-gnu, s390x-linux-gnu, sh4-linux-gnu,
sparcv9-linux-gnu, sparc64-linux-gnu, tilegx-linux-gnu).

	* sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h: Remove file.
	* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
	(SINGLE_THREAD_BY_GLOBAL): Define.
	* sysdeps/unix/sysv/linux/aarch64/sysdep.h (SINGLE_THREAD_BY_GLOBAL):
	Likewise.
	* sysdeps/unix/sysv/linux/alpha/sysdep.h (SINGLE_THREAD_BY_GLOBAL):
	Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep.h (SINGLE_THREAD_BY_GLOBAL):
	Likewise.
	* sysdeps/unix/sysv/linux/hppa/sysdep.h (SINGLE_THREAD_BY_GLOBAL):
	Likewise.
	* sysdeps/unix/sysv/linux/microblaze/sysdep.h
	(SINGLE_THREAD_BY_GLOBAL): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep.h (SINGLE_THREAD_BY_GLOBAL):
	Likewise.
2017-10-11 14:27:24 -03:00
Andreas Schwab
2faa42daa8 nscd: remove reference to libnsl
This removes the dependency on libnsl from nscd.  It only used __nis_hash,
build its own copy under the name __nscd_hash.
2017-10-11 15:51:52 +02:00
Florian Weimer
d8425e116c nss_files: Avoid large buffers with many host addresses [BZ #22078]
The previous implementation had at least a quadratic space
requirement in the number of host addresses and aliases.
2017-10-11 07:07:51 +02:00
Florian Weimer
78e806fd8c nss_files: Use struct scratch_buffer for gethostbyname [BZ #18023] 2017-10-11 07:01:34 +02:00
Joseph Myers
0ff64d3a18 Use generic alias macros in ldbl-opt.
This patch fixes ldbl-opt code to use generic libm alias macros in
preparation for getting _FloatN / _FloatNx aliases where appropriate.

Four functions are affected, that undefine and redefine alias macros
before including the implementations they wrap in such a way that
_FloatN / _FloatNx aliases would not appear.  s_clog10l.c undefines
and redefined declare_mgen_alias, so just needs a
libm_alias_ldouble_other call added.  w_exp10l_compat.c undefines and
redefines weak_alias, but in fact does not need to do so, since
math/w_exp10l_compat.c uses libm_alias_ldouble and does not use
weak_alias other than through that, so the undefines and redefines of
weak_alias are removed.  w_lgamma_compatl.c and w_remainderl_compat.c
are made to use libm_alias_ldouble_other in conjunction with restoring
the original definition of weak_alias so this is effective.

Tested with build-many-glibcs.py.  Installed stripped shared libraries
are unchanged by this patch.

	* sysdeps/ieee754/ldbl-opt/s_clog10l.c: Use
	libm_alias_ldouble_other.
	* sysdeps/ieee754/ldbl-opt/w_exp10l_compat.c (weak_alias): Do not
	undefine and redefine.
	[LIBM_SVID_COMPAT && !LONG_DOUBLE_COMPAT (libm, GLIBC_2_1)]
	(exp10l): Do not define here.
	* sysdeps/ieee754/ldbl-opt/w_lgamma_compatl.c [BUILD_LGAMMA]
	(weak_alias): Undefine and redefine.
	[BUILD_LGAMMA]: Use libm_alias_ldouble_other.
	* sysdeps/ieee754/ldbl-opt/w_remainderl_compat.c
	[LIBM_SVID_COMPAT] (weak_alias): Undefine and redefine here.
	[LIBM_SVID_COMPAT]: Use libm_alias_ldouble_other.
2017-10-11 02:51:39 +00:00
Joseph Myers
541f19baf8 Use libm_alias_* in soft-fp.
This patch makes the soft-fp implementations of fma functions use the
libm_alias_* macros.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by the patch.

	* soft-fp/fmadf4.c: Include <libm-alias-double.h>.
	[!__fma] (fma): Define using libm_alias_double.
	* soft-fp/fmasf4.c: Include <libm-alias-float.h>.
	[!__fmaf] (fmaf): Define using libm_alias_float.
	* soft-fp/fmatf4.c: Include <libm-alias-ldouble.h>.
	(fmal): Define using libm_alias_ldouble.
2017-10-11 00:03:46 +00:00
Joseph Myers
24b6515d87 Add libm_alias_*_other_r macros.
Some libm functions are unable to use the generic alias macros such as
libm_alias_double because they have special symbol versioning
requirements for the main float, double or long double public names.

To facilitate adding _FloatN / _FloatNx function aliases in future,
it's still desirable to have generic macros those functions can use as
far as possible.  This patch adds macros such as
libm_alias_double_other, which only define names for _FloatN /
_FloatNx aliases, not for float / double / long double.  As present,
all these new macros do nothing, but they are called in the
appropriate places in macros such as libm_alias_double.  This patch
also arranges for lgamma implementations, and the recently added
optimized float function implementations, to use the new macros to
make them ready for addition of _FloatN / _FloatNx aliases.

Tested for x86_64, and tested with build-many-glibcs.py that installed
stripped shared libraries are unchanged by this patch.

	* sysdeps/generic/libm-alias-double.h (libm_alias_double_other_r):
	New macro.
	(libm_alias_double_other): Likewise.
	(libm_alias_double_r): Use libm_alias_double_other_r.
	* sysdeps/generic/libm-alias-float.h (libm_alias_float_other_r):
	New macro.
	(libm_alias_float_other): Likewise.
	(libm_alias_float_r): Use libm_alias_float_other_r.
	* sysdeps/generic/libm-alias-float128.h
	(libm_alias_float128_other_r): New macro.
	(libm_alias_float128_other): Likewise.
	(libm_alias_float128_r): Use libm_alias_float128_other_r.
	* sysdeps/generic/libm-alias-ldouble.h
	(libm_alias_ldouble_other_r): New macro.
	(libm_alias_ldouble_other): Likewise.
	(libm_alias_ldouble_r): Use libm_alias_ldouble_other_r.
	* sysdeps/ieee754/ldbl-opt/libm-alias-double.h
	(libm_alias_double_other_r): New macro.
	(libm_alias_double_other): Likewise.
	(libm_alias_double_r): Use libm_alias_double_other_r.
	* sysdeps/ieee754/ldbl-opt/libm-alias-ldouble.h
	(libm_alias_ldouble_other_r): New macro.
	(libm_alias_ldouble_other): Likewise.
	(libm_alias_ldouble_r): Use libm_alias_ldouble_other_r.
	* math/w_lgamma_main.c: Include <libm-alias-double.h>.
	[!USE_AS_COMPAT]: Use libm_alias_double_other.
	* math/w_lgammaf_main.c: Include <libm-alias-float.h>.
	[!USE_AS_COMPAT]: Use libm_alias_float_other.
	* math/w_lgammal_main.c: Include <libm-alias-ldouble.h>.
	[!USE_AS_COMPAT]: Use libm_alias_ldouble_other.
	* math/w_exp2f.c: Use libm_alias_float_other.
	* math/w_expf.c: Likewise.
	* math/w_log2f.c: Likewise.
	* math/w_logf.c: Likewise.
	* math/w_powf.c: Likewise.
	* sysdeps/ieee754/flt-32/e_exp2f.c: Include <libm-alias-float.h>.
	[!__exp2f]: Use libm_alias_float_other.
	* sysdeps/ieee754/flt-32/e_expf.c: Include <libm-alias-float.h>.
	[!__expf]: Use libm_alias_float_other.
	* sysdeps/ieee754/flt-32/e_log2f.c: Include <libm-alias-float.h>.
	[!__log2f]: Use libm_alias_float_other.
	* sysdeps/ieee754/flt-32/e_logf.c: Include <libm-alias-float.h>.
	[!__logf]: Use libm_alias_float_other.
	* sysdeps/ieee754/flt-32/e_powf.c: Include <libm-alias-float.h>.
	[!__powf]: Use libm_alias_float_other.
2017-10-10 21:29:11 +00:00
Florian Weimer
8ed70de2fa nss_files: Refactor gethostbyname3 multi case into separate function
This is in preparation of further cleanup work.
2017-10-10 11:50:42 +02:00
Joseph Myers
a8dce6197a Use generic macros for lgamma_r function aliases.
Continuing the use of generic macros for defining libm function
aliases, in preparation for adding more _FloatN / _FloatNx function
names, this patch makes the lgamma_r functions use such macros.

declare_mgen_alias_r becomes a standard macro in math-type-macros.h
instead of being locally defined in w_lgamma_r_templace.c.  This in
turn must be defined by each math-type-macros-<type>.h.  Rather than
providing an unused default in math-type-macros.h, that header is made
to give an error if math-type-macros-<type>.h failed to define
declare_mgen_alias or declare_mgen_alias_r.  The compat lgamma_r
wrappers are updated similarly.  The ldbl-opt versions are removed as
no longer needed.

Tested for x86_64, and with build-many-glibcs.py.  Installed stripped
shared libraries are unchanged except for powerpc64le (where the usual
issue applies that an ldbl-opt long double function previously used
long_double_symbol unconditionally and now the symbol versions on
powerpc64le mean weak_alias is used instead, resulting in the same
symbol versions in the final shared library but still enough
difference in the input objects for that library not to be
byte-identical).

	* sysdeps/generic/math-type-macros.h [!declare_mgen_alias]: Give
	error.  Remove default definition of declare_mgen_alias.
	[!declare_mgen_alias_r]: Likewise.
	* sysdeps/generic/math-type-macros-double.h
	[!declare_mgen_alias_r] (declare_mgen_alias_r): New macro.
	* sysdeps/generic/math-type-macros-float.h [!declare_mgen_alias_r]
	(declare_mgen_alias_r): Likewise.
	* sysdeps/generic/math-type-macros-float128.h
	[!declare_mgen_alias_r] (declare_mgen_alias_r): Likewise.
	* sysdeps/generic/math-type-macros-ldouble.h
	[!declare_mgen_alias_r] (declare_mgen_alias_r): Likewise.
	* math/w_lgamma_r_template.c (declare_mgen_alias_r_x): Remove
	macro.
	(declare_mgen_alias_r_s): Likewise.
	(declare_mgen_alias_r): Likewise.
	* math/w_lgamma_r_compat.c: Include <libm-alias-double.h>.
	(lgamma_r): Define using libm_alias_double_r.
	* math/w_lgammaf_r_compat.c: Include <libm-alias-float.h>.
	(lgammaf_r): Define using libm_alias_float_r.
	* math/w_lgammal_r_compat.c: Include <libm-alias-ldouble.h>.
	(lgammal_r): Define using libm_alias_ldouble_r.
	* sysdeps/ieee754/ldbl-opt/w_lgamma_r_compat.c: Remove file.
	* sysdeps/ieee754/ldbl-opt/w_lgammal_r_compat.c: Likewise.
2017-10-09 22:04:18 +00:00
Adhemerval Zanella
bedac13671 posix: remove glob internal bogus extern decl
Sync with gnulib f586d709f07.  Checked on x86_64-linux-gnu.

	* lib/glob.c (__glob_pattern_type): Remove now-spurious
	extern declaration.
2017-10-09 14:55:26 -03:00