Commit Graph

33904 Commits

Author SHA1 Message Date
Joseph Myers
0d2163ebf2 Make powerpc-nofpu __sqrtsf2, __sqrtdf2 compat symbols (bug 18473).
powerpc-nofpu libc exports __sqrtsf2 and __sqrtdf2 symbols.  The
export of these soft-fp symbols is a mistake; they aren't part of the
libgcc interface and GCC will never generate code that calls them.
This patch makes them into compat symbols (no code built for static
libc), moving their sources from the generic soft-fp sources to
sysdeps/powerpc/nofpu (the underlying soft-fp FP_SQRT functionality
remains of use to implement actual sqrt public interfaces, such as
sqrtl / sqrtf128 for which it is used on various platforms, but
__sqrt[sdt]f2 are not such interfaces).

Tested with build-many-glibcs.py for relevant platforms.

	[BZ #18473]
	* soft-fp/sqrttf2.c: Remove file.
	* soft-fp/sqrtdf2.c: Move to ....
	* sysdeps/powerpc/nofpu/sqrtdf2.c: ... here.  Include
	<shlib-compat.h>.
	(__sqrtdf2): Make conditional on
	[SHLIB_COMPAT (libc, GLIBC_2_3_2, GLIBC_2_28)].  Define as compat
	symbol.
	* soft-fp/sqrtsf2.c: Move to ....
	* sysdeps/powerpc/nofpu/sqrtsf2.c: ... here.  Include
	<shlib-compat.h>.
	(__sqrtsf2): Make conditional on
	[SHLIB_COMPAT (libc, GLIBC_2_3_2, GLIBC_2_28)].  Define as compat
	symbol.
	* soft-fp/Makefile (gcc-single-routines): Remove sqrtsf2.
	(gcc-double-routines): Remove sqrtdf2.
	(gcc-quad-routines): Remove sqrttf2.
	* sysdeps/nios2/Makefile [$(subdir) = soft-fp] (sysdep_routines):
	Do not filter out sqrtsf2 and sqrtdf2.
	* sysdeps/powerpc/nofpu/Makefile [$(subdir) = soft-fp]
	(sysdep_routines): Add sqrtsf2 and sqrtdf2.
2018-06-01 17:25:12 +00:00
Florian Weimer
104502102c Remove sysdeps/generic/libcidn.abilist
This file was left behind by the libidn removal in commit
7f9f1ecb71.
2018-06-01 11:25:41 +02:00
Florian Weimer
4e8a6346cd libio: Avoid _allocate_buffer, _free_buffer function pointers [BZ #23236]
These unmangled function pointers reside on the heap and could
be targeted by exploit writers, effectively bypassing libio vtable
validation.  Instead, we ignore these pointers and always call
malloc or free.

In theory, this is a backwards-incompatible change, but using the
global heap instead of the user-supplied callback functions should
have little application impact.  (The old libstdc++ implementation
exposed this functionality via a public, undocumented constructor
in its strstreambuf class.)
2018-06-01 10:41:03 +02:00
Paul Pluzhnikov
50d004c91c Update ulps with "make regen-ulps" on AMD Ryzen 7 1800X.
2018-05-30  Paul Pluzhnikov  <ppluzhnikov@google.com>

	* sysdeps/x86_64/fpu/libm-test-ulps (log_vlen8_avx2): Update for
	AMD Ryzen 7 1800X.
2018-05-30 09:17:47 -07:00
Rajalakshmi Srinivasaraghavan
2c93fce76a powerpc: Add multiarch sqrtf128 for ppc64le
This patch creates ifunc for sqrtf128() to make use of new xssqrtqp
instruction for POWER9 when --enable-multi-arch and --with-cpu=power8
options are used on power9 system.  This is achieved by explicitly
adding -mcpu=power9 flag for sqrtf128-power9.
2018-05-30 21:31:27 +05:30
Florian Weimer
0ce2fa6973 support: Add wrappers for pthread_barrierattr_t 2018-05-29 15:37:00 +02:00
H.J. Lu
7f7b5d8ded static-PIE: Update DT_DEBUG for debugger [BZ #23206]
This is needed to support debugging dlopened shared libraries in static
PIE.

	[BZ #23206]
	* elf/dl-reloc-static-pie.c (_dl_relocate_static_pie): Initialize
	_r_debug and update DT_DEBUG for debugger.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2018-05-29 06:33:57 -07:00
Florian Weimer
e48903000b stdlib: Additional tests need generated locale dependencies
Without these dependencies, the tests fail at high make parallelism
levels if the locale data has not been generated for other reasons.
2018-05-29 10:34:53 +02:00
Joseph Myers
b5453d9f7a Remove sysdeps/sparc/sparc64/soft-fp directory.
As per <https://sourceware.org/ml/libc-alpha/2014-10/msg00369.html>,
there should not be separate sysdeps/<arch>/soft-fp directories when
those are used by all configurations that use sysdeps/<arch>, and,
more generally, should not be sysdeps/foo/Implies files pointing to a
subdirectory foo/bar.  This patch eliminates the
sysdeps/sparc/sparc64/soft-fp directory accordingly, merging its
contents into sysdeps/sparc/sparc64.  This completes removing the
unnecessary <arch>/soft-fp sysdeps directories.

sysdeps/sparc/sparc64/soft-fp/e_ilogbl.c is removed rather than moved.
It was not in fact used previously - the ldbl-128 version of
e_ilogbl.c was used instead - and moving it into sysdeps/sparc/sparc64
results in it being used, but causing a build failure because of
FP_DECL_EX declaring an unused variable (as I noted in
<https://sourceware.org/ml/libc-alpha/2013-10/msg00457.html> that file
doesn't appear to use FP_DECL_EX).  Given that the file was previously
unused and so presumably not tested recently, removing it is the safe
way to avoid this patch changing what actually gets built into glibc
(if this file should turn out more efficient than the ldbl-128
e_ilogbl.c, it can always be added back in future with the build
failure fixed).

Tested with build-many-glibcs.py that installed stripped shared
libraries for sparc configurations are unchanged by this patch.

	* sysdeps/sparc/sparc64/Implies: Remove sparc/sparc64/soft-fp.
	* sysdeps/sparc/sparc64/Makefile [$(subdir) = soft-fp]
	(sparc64-quad-routines): New variable.  Moved from ....
	[$(subdir) = soft-fp] (sysdep_routines): Add
	$(sparc64-quad-routines).  Moved from ....
	[$(subdir) = math] (CPPFLAGS): Add -I../soft-fp/.  Moved from ....
	* sysdeps/sparc/sparc64/soft-fp/Makefile: ... here.  Remove file.
	* sysdeps/sparc/sparc64/Versions (libc): Add GLIBC_2.2 symbols
	moved from ....
	* sysdeps/sparc/sparc64/soft-fp/Versions: ... here.  Remove file.
	* sysdeps/sparc/sparc64/soft-fp/e_ilogbl.c: Remove file.
	* sysdeps/sparc/sparc64/soft-fp/qp_add.c: Move to ....
	* sysdeps/sparc/sparc64/qp_add.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_cmp.c: Move to ....
	* sysdeps/sparc/sparc64/qp_cmp.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_cmpe.c: Move to ....
	* sysdeps/sparc/sparc64/qp_cmpe.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_div.c: Move to ....
	* sysdeps/sparc/sparc64/qp_div.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_dtoq.c: Move to ....
	* sysdeps/sparc/sparc64/qp_dtoq.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_feq.c: Move to ....
	* sysdeps/sparc/sparc64/qp_feq.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_fge.c: Move to ....
	* sysdeps/sparc/sparc64/qp_fge.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_fgt.c: Move to ....
	* sysdeps/sparc/sparc64/qp_fgt.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_fle.c: Move to ....
	* sysdeps/sparc/sparc64/qp_fle.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_flt.c: Move to ....
	* sysdeps/sparc/sparc64/qp_flt.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_fne.c: Move to ....
	* sysdeps/sparc/sparc64/qp_fne.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_itoq.c: Move to ....
	* sysdeps/sparc/sparc64/qp_itoq.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_mul.c: Move to ....
	* sysdeps/sparc/sparc64/qp_mul.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_neg.S: Move to ....
	* sysdeps/sparc/sparc64/qp_neg.S: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_qtod.c: Move to ....
	* sysdeps/sparc/sparc64/qp_qtod.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_qtoi.c: Move to ....
	* sysdeps/sparc/sparc64/qp_qtoi.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_qtos.c: Move to ....
	* sysdeps/sparc/sparc64/qp_qtos.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_qtoui.c: Move to ....
	* sysdeps/sparc/sparc64/qp_qtoui.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_qtoux.c: Move to ....
	* sysdeps/sparc/sparc64/qp_qtoux.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_qtox.c: Move to ....
	* sysdeps/sparc/sparc64/qp_qtox.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_sqrt.c: Move to ....
	* sysdeps/sparc/sparc64/qp_sqrt.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_stoq.c: Move to ....
	* sysdeps/sparc/sparc64/qp_stoq.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_sub.c: Move to ....
	* sysdeps/sparc/sparc64/qp_sub.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_uitoq.c: Move to ....
	* sysdeps/sparc/sparc64/qp_uitoq.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_util.c: Move to ....
	* sysdeps/sparc/sparc64/qp_util.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_uxtoq.c: Move to ....
	* sysdeps/sparc/sparc64/qp_uxtoq.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/qp_xtoq.c: Move to ....
	* sysdeps/sparc/sparc64/qp_xtoq.c: ... here.
	* sysdeps/sparc/sparc64/soft-fp/sfp-machine.h: Move to ....
	* sysdeps/sparc/sparc64/sfp-machine.h: ... here.
2018-05-25 20:00:51 +00:00
Joseph Myers
2c753f3e84 Remove sysdeps/sparc/sparc32/soft-fp directory.
As per <https://sourceware.org/ml/libc-alpha/2014-10/msg00369.html>,
there should not be separate sysdeps/<arch>/soft-fp directories when
those are used by all configurations that use sysdeps/<arch>, and,
more generally, should not be sysdeps/foo/Implies files pointing to a
subdirectory foo/bar.  This patch eliminates the
sysdeps/sparc/sparc32/soft-fp directory accordingly, merging its
contents into sysdeps/sparc/sparc32.

Tested with build-many-glibcs.py that installed stripped shared
libraries for sparc configurations are unchanged by this patch.

	* sysdeps/sparc/sparc32/Implies: Remove sparc/sparc32/soft-fp.
	* sysdeps/sparc/sparc32/Makefile [$(subdir) = soft-fp]
	(sparc32-quad-routines): New variable.  Moved from ....
	[$(subdir) = soft-fp] (sysdep_routines): Add
	$(sparc32-quad-routines).  Moved from ....
	* sysdeps/sparc/sparc32/soft-fp/Makefile: ... here.  Remove file.
	* sysdeps/sparc/sparc32/Versions (libc): Add GLIBC_2.4 symbols
	moved from ....
	* sysdeps/sparc/sparc32/soft-fp/Versions: ... here.  Remove file.
	* sysdeps/sparc/sparc32/soft-fp/q_add.c: Move to ....
	* sysdeps/sparc/sparc32/q_add.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_cmp.c: Move to ....
	* sysdeps/sparc/sparc32/q_cmp.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_cmpe.c: Move to ....
	* sysdeps/sparc/sparc32/q_cmpe.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_div.c: Move to ....
	* sysdeps/sparc/sparc32/q_div.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_dtoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_dtoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_feq.c: Move to ....
	* sysdeps/sparc/sparc32/q_feq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_fge.c: Move to ....
	* sysdeps/sparc/sparc32/q_fge.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_fgt.c: Move to ....
	* sysdeps/sparc/sparc32/q_fgt.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_fle.c: Move to ....
	* sysdeps/sparc/sparc32/q_fle.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_flt.c: Move to ....
	* sysdeps/sparc/sparc32/q_flt.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_fne.c: Move to ....
	* sysdeps/sparc/sparc32/q_fne.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_itoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_itoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_lltoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_lltoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_mul.c: Move to ....
	* sysdeps/sparc/sparc32/q_mul.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_neg.c: Move to ....
	* sysdeps/sparc/sparc32/q_neg.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtod.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtod.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtoi.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtoi.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtoll.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtoll.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtos.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtos.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtou.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtou.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtoull.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtoull.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_sqrt.c: Move to ....
	* sysdeps/sparc/sparc32/q_sqrt.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_stoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_stoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_sub.c: Move to ....
	* sysdeps/sparc/sparc32/q_sub.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_ulltoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_ulltoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_util.c: Move to ....
	* sysdeps/sparc/sparc32/q_util.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_utoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_utoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/sfp-machine.h: Move to ....
	* sysdeps/sparc/sparc32/sfp-machine.h: ... here.
2018-05-25 16:51:15 +00:00
Tulio Magno Quites Machado Filho
c1dc1e1b34 powerpc: Move around math-related Implies
Currently, powerpc, powerpc64, and powerpc64le imply the same set of
subdirectories from sysdeps/ieee754: flt-32, dbl-64, ldbl-128ibm, and
ldbl-opt.  In preparation for the transition of the long double format -
from IBM Extended Precision to IEEE 754 128-bits floating-point - on
powerpc64le, this patch splits the shared Implies file into three
separate files (one for each of the powerpc architectures), without
changing their contents.  Future patches will modify powerpc64le.

	* sysdeps/powerpc/Implies: Removed.  Previous contents copied to...
	* sysdeps/powerpc/powerpc32/Implies-after: ... here.
	* sysdeps/powerpc/powerpc64/be/Implies-after: ... here.
	* sysdeps/powerpc/powerpc64/le/Implies-before: ... and here.
2018-05-24 22:49:10 -03:00
Joseph Myers
14186e8d1f Remove sysdeps/powerpc/soft-fp directory.
As per <https://sourceware.org/ml/libc-alpha/2014-10/msg00369.html>,
there should not be separate sysdeps/<arch>/soft-fp directories when
those are used by all configurations that use sysdeps/<arch>, and,
more generally, should not be sysdeps/foo/Implies files pointing to a
subdirectory foo/bar.

sysdeps/powerpc/soft-fp isn't quite such a case, as the Implies files
pointing to it are
sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/Implies and
sysdeps/unix/sysv/linux/powerpc/powerpc32/e500/nofpu/Implies (and
indeed there is a different sfp-machine.h used for powerpc64le).
However, the same principle applies: there is no need for this
directory because sfp-machine.h, the only file in it, can most
naturally go in sysdeps/powerpc/nofpu, which is used by exactly the
same configurations (and there is a close dependence between the files
there and the sfp-machine.h implementation).  This patch eliminates
the sysdeps/powerpc/soft-fp directory accordingly.

Tested with build-many-glibcs.py that installed stripped shared
libraries for powerpc configurations are unchanged by this patch.

	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/Implies: Remove
	powerpc/soft-fp.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/e500/nofpu/Implies:
	Likewise.
	* sysdeps/powerpc/soft-fp/sfp-machine.h: Move to ....
	* sysdeps/powerpc/nofpu/sfp-machine.h: ... here.
2018-05-24 22:02:32 +00:00
Gabriel F. T. Gomes
fb0e10b8eb Fix parameter type in C++ version of iseqsig (bug 23171)
The commit

  commit c85e54ac6c
  Author: Gabriel F. T. Gomes <gabriel@inconstante.eti.br>
  Date:   Fri Nov 3 10:44:36 2017 -0200

      Provide a C++ version of iseqsig (bug 22377)

mistakenly used double parameters in the long double version of iseqsig,
thus causing spurious conversions to double, as reported on bug 23171.

Tested for powerpc64le and x86_64.
2018-05-24 13:12:39 -03:00
Florian Weimer
43d4f3d5ad Add references to CVE-2017-18269, CVE-2018-11236, CVE-2018-11237 2018-05-24 12:19:11 +02:00
Joseph Myers
1dfeb17e67 Remove sysdeps/sh/soft-fp directory.
As per <https://sourceware.org/ml/libc-alpha/2014-10/msg00369.html>,
there should not be separate sysdeps/<arch>/soft-fp directories when
those are used by all configurations that use sysdeps/<arch>, and,
more generally, should not be sysdeps/foo/Implies files pointing to a
subdirectory foo/bar.  This patch eliminates the sysdeps/sh/soft-fp
directory accordingly, merging its contents into sysdeps/sh.

Tested with build-many-glibcs.py that installed stripped shared
libraries for sh configurations are unchanged by this patch.

	* sysdeps/sh/Implies: Remove sh/soft-fp.
	* sysdeps/sh/soft-fp/sfp-machine.h: Move to ....
	* sysdeps/sh/sfp-machine.h: ... here.
2018-05-23 20:05:31 +00:00
H.J. Lu
727b38df05 x86-64: Skip zero length in __mem[pcpy|move|set]_erms
This patch skips zero length in __mempcpy_erms, __memmove_erms and
__memset_erms.

Tested on x86-64.

	* sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
	(__mempcpy_erms): Skip zero length.
	(__memmove_erms): Likewise.
	* sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
	(__memset_erms): Likewise.
2018-05-23 11:25:42 -07:00
Joseph Myers
2834fb4610 Remove sysdeps/alpha/soft-fp directory.
As per <https://sourceware.org/ml/libc-alpha/2014-10/msg00369.html>,
there should not be separate sysdeps/<arch>/soft-fp directories when
those are used by all configurations that use sysdeps/<arch>, and,
more generally, should not be sysdeps/foo/Implies files pointing to a
subdirectory foo/bar.  This patch eliminates the
sysdeps/alpha/soft-fp directory accordingly, merging its contents
into sysdeps/alpha.

Tested with build-many-glibcs.py that installed stripped shared
libraries for alpha-linux-gnu are unchanged by this patch.

	* sysdeps/alpha/Implies: Remove alpha/soft-fp.
	* sysdeps/alpha/Makefile [$(subdir) = soft-fp] (sysdep_routines):
	Add functions moved from ....
	[$(subdir) = math] (CPPFLAGS): Add -I../soft-fp.  Moved from ....
	* sysdeps/alpha/soft-fp/Makefile: ... here.  Remove file.
	* sysdeps/alpha/Versions (libc): Add GLIBC_2.3.4 symbols moved
	from ....
	* sysdeps/alpha/soft-fp/Versions: ... here.  Remove file.
	* sysdeps/alpha/soft-fp/e_sqrtl.c: Move to ....
	* sysdeps/alpha/e_sqrtl.c: ... here.
	* sysdeps/alpha/soft-fp/local-soft-fp.h: Move to ....
	* sysdeps/alpha/local-soft-fp.h: ... here.
	* sysdeps/alpha/soft-fp/ots_add.c: Move to ....
	* sysdeps/alpha/ots_add.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cmp.c: Move to ....
	* sysdeps/alpha/ots_cmp.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cmpe.c: Move to ....
	* sysdeps/alpha/ots_cmpe.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cvtqux.c: Move to ....
	* sysdeps/alpha/ots_cvtqux.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cvtqx.c: Move to ....
	* sysdeps/alpha/ots_cvtqx.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cvttx.c: Move to ....
	* sysdeps/alpha/ots_cvttx.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cvtxq.c: Move to ....
	* sysdeps/alpha/ots_cvtxq.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cvtxt.c: Move to ....
	* sysdeps/alpha/ots_cvtxt.c: ... here.
	* sysdeps/alpha/soft-fp/ots_div.c: Move to ....
	* sysdeps/alpha/ots_div.c: ... here.
	* sysdeps/alpha/soft-fp/ots_mul.c: Move to ....
	* sysdeps/alpha/ots_mul.c: ... here.
	* sysdeps/alpha/soft-fp/ots_nintxq.c: Move to ....
	* sysdeps/alpha/ots_nintxq.c: ... here.
	* sysdeps/alpha/soft-fp/ots_sub.c: Move to ....
	* sysdeps/alpha/ots_sub.c: ... here.
	* sysdeps/alpha/soft-fp/sfp-machine.h: Move to ....
	* sysdeps/alpha/sfp-machine.h: ... here.
2018-05-23 17:29:20 +00:00
Florian Weimer
7f9f1ecb71 Switch IDNA implementation to libidn2 [BZ #19728] [BZ #19729] [BZ #22247]
This provides an implementation of the IDNA2008 standard and fixes
CVE-2016-6261, CVE-2016-6263, CVE-2017-14062.
2018-05-23 15:27:24 +02:00
Florian Weimer
5f7b841d3a Implement allocate_once for atomic initialization with allocation 2018-05-23 15:27:01 +02:00
H.J. Lu
ed983107bb Add a test case for [BZ #23196]
[BZ #23196]
	* string/test-memcpy.c (do_test1): New function.
	(test_main): Call it.
2018-05-23 04:00:11 -07:00
Andreas Schwab
9aaaab7c6e Don't write beyond destination in __mempcpy_avx512_no_vzeroupper (bug 23196)
When compiled as mempcpy, the return value is the end of the destination
buffer, thus it cannot be used to refer to the start of it.
2018-05-23 09:50:57 +02:00
Joseph Myers
8f145c7712 Remove sysdeps/aarch64/soft-fp directory.
As per <https://sourceware.org/ml/libc-alpha/2014-10/msg00369.html>,
there should not be separate sysdeps/<arch>/soft-fp directories when
those are used by all configurations that use sysdeps/<arch>, and,
more generally, should not be sysdeps/foo/Implies files pointing to a
subdirectory foo/bar.  This patch eliminates the
sysdeps/aarch64/soft-fp directory accordingly, merging its contents
into sysdeps/aarch64.

Tested with build-many-glibcs.py that installed stripped shared
libraries for aarch64 configurations are unchanged by this patch.

	* sysdeps/aarch64/Implies: Remove aarch64/soft-fp.
	* sysdeps/aarch64/Makefile [$(subdir) = math] (CPPFLAGS): Add
	-I../soft-fp.  Moved from ....
	* sysdeps/aarch64/soft-fp/Makefile: ... here.  Remove file.
	* sysdeps/aarch64/soft-fp/e_sqrtl.c: Move to ....
	* sysdeps/aarch64/e_sqrtl.c: ... here.
	* sysdeps/aarch64/soft-fp/sfp-machine.h: Move to ....
	* sysdeps/aarch64/sfp-machine.h: ... here.
2018-05-22 17:23:34 +00:00
Joseph Myers
3d6302a546 Fix i686-linux-gnu build with GCC mainline.
Building with recent GCC mainline for i686-linux-gnu is failing with:

../sysdeps/ieee754/flt-32/k_rem_pio2f.c: In function '__kernel_rem_pio2f':
../sysdeps/ieee754/flt-32/k_rem_pio2f.c:186:28: error: 'fq[0]' may be used uninitialized in this function [-Werror=maybe-uninitialized]
   fv = math_narrow_eval (fq[0]-fv);
                            ^

and

../sysdeps/ieee754/dbl-64/k_rem_pio2.c: In function '__kernel_rem_pio2':
../sysdeps/ieee754/dbl-64/k_rem_pio2.c:333:32: error: 'fq[0]' may be used uninitialized in this function [-Werror=maybe-uninitialized]
       fv = math_narrow_eval (fq[0] - fv);
                                ^

These are similar to -Warray-bounds cases for which the DIAG_* macros
are already used in those files: the array element is in fact always
initialized, but the reasoning that it is depends on another array not
having been all zero at an earlier point, which depends on the
functions not being called with zero arguments.  Thus, this patch uses
DIAG_* to disable -Wmaybe-uninitialized for this code.

(The warning may be i686-specific because of math_narrow_eval somehow
perturbing what the compiler does with this code enough to cause the
warning.  I don't know why it doesn't appear for i686-gnu.)

Tested with build-many-glibcs.py that this fixes the i686 build in
this configuration.

	* sysdeps/ieee754/dbl-64/k_rem_pio2.c (__kernel_rem_pio2): Ignore
	-Wmaybe-uninitialized around access to fq[0].
	* sysdeps/ieee754/flt-32/k_rem_pio2f.c (__kernel_rem_pio2f):
	Likewise.
2018-05-22 16:55:04 +00:00
Joseph Myers
5c5c0dd747 Make llseek a compat symbol (bug 18471).
The llseek function name is an obsolete, Linux-specific, unprototyped
name for lseek64 with a link-time warning.  This patch completes the
obsoletion of this function name by making it into a compat symbol,
not available for newly linked programs and not included in the ABI
for new ports.

When a compat symbol is defined in syscalls.list, the code for that
function is not built at all for static linking unless some non-compat
symbol for that function is also defined with an explicit symbol
version, so an explicit symbol version for lseek64 is added to the
MIPS n32 syscalls.list.  The case in make-syscalls.sh that handles
such explicit non-compat symbol versions then needs to be changed to
use weak_alias instead of strong_alias when the syscall is built
outside of libc, to avoid linknamespace failures from a strong lseek64
symbol in static libpthread.

The x32 llseek.S was as far as I could tell already unused (nothing
builds an llseek.* source file, at least since the lseek / lseek64 /
llseek consolidation), so is removed in this patch as well.

Tested for x86_64 and x86, and with build-many-glibcs.py.

	[BZ #18471]
	* sysdeps/unix/make-syscalls.sh (emit_weak_aliases): Use weak
	aliases for non-libc case of versioned symbols.
	* sysdeps/unix/sysv/linux/lseek64.c: Include <shlib-compat.h>.
	(llseek): Define as compat symbol if
	[SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_28)], not as weak alias
	with link warning.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list (llseek):
	Make into a compat symbol, disabled for minimum symbol version
	GLIBC_2.28 and later.
	* sysdeps/unix/sysv/linux/x86_64/x32/llseek.S: Remove file.
2018-05-22 15:44:01 +00:00
Florian Weimer
ed0d698870 i386: Drop -mpreferred-stack-boundary=4
The flag was a left-over from when the -mpreferred-stack-boundary=2 flag
was removed in commit db290cf592.
2018-05-22 14:44:14 +02:00
H.J. Lu
e28e9b1ec4 x86-64: Check Prefer_FSRM in ifunc-memmove.h
Although the REP MOVSB implementations of memmove, memcpy and mempcpy
aren't used by the current processors, this patch adds Prefer_FSRM
check in ifunc-memmove.h so that they can be used in the future.

	* sysdeps/x86/cpu-features.h (bit_arch_Prefer_FSRM): New.
	(index_arch_Prefer_FSRM): Likewise.
	* sysdeps/x86/cpu-tunables.c (TUNABLE_CALLBACK (set_hwcaps)):
	Also check Prefer_FSRM.
	* sysdeps/x86_64/multiarch/ifunc-memmove.h (IFUNC_SELECTOR):
	Also return OPTIMIZE (erms) for Prefer_FSRM.
2018-05-21 16:54:59 -07:00
H.J. Lu
1af30adcd5 Initial Fast Short REP MOVSB (FSRM) support
The newer Intel processors support Fast Short REP MOVSB which has a
feature bit in CPUID.  This patch adds the Fast Short REP MOVSB (FSRM)
bit to x86 cpu-features.

	* sysdeps/x86/cpu-features.h (bit_cpu_FSRM): New.
	(index_cpu_FSRM): Likewise.
	(reg_FSRM): Likewise.
2018-05-21 10:54:32 -07:00
Joseph Myers
7c67e6e8b9 Split test-tgmath3 by function.
It has been noted that test-tgmath3 is slow to compile, and to link on
some systems
<https://sourceware.org/ml/libc-alpha/2018-02/msg00477.html>, because
of the size of the test.

I'm working on tgmath.h support for the TS 18661-1 / 18661-3 functions
that round their results to a narrower type.  For the functions
already present in glibc, this wouldn't make test-tgmath3 much bigger,
because those functions only have two arguments.  For the narrowing
versions of fma (for which I've not yet added the functions to glibc),
however, it would result in many configurations building tests of the
type-generic macros f32fma, f64fma, f32xfma, f64xfma, each with 21
possible types for each of three arguments (float, double, long double
aren't valid argument types for these macros when they return a
_FloatN / _FloatNx type), so substantially increasing the size of the
testcase.

To avoid further increasing the size of a single test when adding the
type-generic narrowing fma macros, this patch arranges for the
test-tgmath3 tests to be run separately for each function tested.  The
fma tests are still by far the largest (next is pow, as that has two
arguments that can be real or complex; after that, the two-argument
real-only functions), but each type-generic fma macro for a different
return type would end up with its tests being run separately, rather
than increasing the size of a single test.

To avoid accidentally missing testing a macro because
gen-tgmath-tests.py supports testing it but the makefile fails to call
it for that function, a test is also added that verifies that the
lists of macros in the makefile and gen-tgmath-tests.py agree.

Tested for x86_64.

	* math/gen-tgmath-tests.py: Import sys.
	(Tests.__init__): Initialize macros_seen.
	(Tests.add_tests): Add macro to macros_seen.  Only generate tests
	if requested to do so for this macro.
	(Tests.add_all_tests): Take argument for macro for which to
	generate tests.
	(Tests.check_macro_list): New function.
	(main): Handle check-list argument and argument specifying macro
	for which to generate tests.
	* math/Makefile [PYTHON] (tgmath3-macros): New variable.
	[PYTHON] (tgmath3-macro-tests): Likewise.
	[PYTHON] (tests): Add $(tgmath3-macro-tests) not test-tgmath3.
	[PYTHON] (generated): Add $(addsuffix .c,$(tgmath3-macro-tests))
	not test-tgmath3.c.
	[PYTHON] (CFLAGS-test-tgmath3.c): Remove.
	[PYTHON] ($(tgmath3-macro-tests:%=$(objpfx)%.o): Add -fno-builtin
	to CFLAGS.
	[PYTHON] ($(objpfx)test-tgmath3.c): Replace rule by....
	[PYTHON] ($(foreach
	m,$(tgmath3-macros),$(objpfx)test-tgmath3-$(m).c): ... this.  New
	rule.
	[PYTHON] (tests-special): Add
	$(objpfx)test-tgmath3-macro-list.out.
	[PYTHON] ($(objpfx)test-tgmath3-macro-list.out): New rule.
2018-05-18 17:30:18 +00:00
Joseph Myers
ebc129fd17 Obsolete nfsservctl.
The Linux nfsservctl syscall was removed in Linux 3.1.  Since the
minimum kernel version for use with glibc is 3.2, the glibc wrapper
for this syscall can no longer usefully be called.  This patch makes
it into a compat symbol, not provided at all for static linking or new
ports.  (It was already the case that there was no header declaration
of this function.)

Tested for x86_64.

	* sysdeps/unix/sysv/linux/syscalls.list (nfsservctl): Make into a
	compat symbol, disabled for minimum symbol version GLIBC_2.28 and
	later.
2018-05-18 16:50:44 +00:00
Joseph Myers
78274dc8ce Fix year 2039 bug for localtime with 64-bit time_t (bug 22639).
Bug 22639 reports localtime failing to handle time offset transitions
correctly in 2039 and later on platforms with 64-bit time_t.

The problem is the use of SECSPERDAY (constant 86400) in calculations
such as

    t = ((year - 1970) * 365
	 + /* Compute the number of leapdays between 1970 and YEAR
	      (exclusive).  There is a leapday every 4th year ...  */
	 + ((year - 1) / 4 - 1970 / 4)
	 /* ... except every 100th year ... */
	 - ((year - 1) / 100 - 1970 / 100)
	 /* ... but still every 400th year.  */
	 + ((year - 1) / 400 - 1970 / 400)) * SECSPERDAY;

where t is of type time_t and year is of type int.  Before my commit
92bd70fb85 (an update from tzcode,
included in 2.26 and later releases), SECSPERDAY was obtained from a
file imported from tzcode, where the value included a cast to
int_fast32_t.  On 64-bit platforms, glibc defines int_fast32_t to be
long int, so 64-bit, but my patch resulted in it changing to int.
(The bug would probably have existed even before my patch for x32,
which has 64-bit time_t but 32-bit int_fast32_t, but I haven't
verified that.)

This patch fixes the problem by including a cast to time_t in the
definition of SECSPERDAY.  (64-bit time support for 32-bit systems
should move such code that isn't a public interface to using the
internal 64-bit version of time_t throughout.)

Tested for x86_64 and x86.

	[BZ #22639]
	* time/tzset.c (SECSPERDAY): Cast to time_t.
	* time/tst-y2039.c: New file.
	* time/Makefile (tests): Add tst-y2039.
2018-05-18 11:57:15 +00:00
Leonardo Sandoval
6f7fdeeb69 Add missing changelog from previous commit 2018-05-17 10:31:11 -05:00
Leonardo Sandoval
e4ebc1380d x86-64: remove duplicate line on PREFETCH_ONE_SET macro
Tested on 64-bit AVX machine

       * sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
       (PREFETCH_ONE_SET): Remove duplicate line
2018-05-17 09:09:13 -05:00
Florian Weimer
e363a91c21 math: Reverse include order in <math-type-macros-*.h>
_Float128 is defined for certain compilers indirectly from
<libm-alias-double.h>, and <ieee754_float128.h> (included from
<math-nan-payload-float128.h>) needs this definition.
2018-05-17 15:48:42 +02:00
Andreas Schwab
dae6c43c33 Remove unneeded setting of errno after malloc failure
The errno value has alread been set by malloc.
2018-05-17 15:47:25 +02:00
H.J. Lu
0068c08588 nptl: Remove __ASSUME_PRIVATE_FUTEX
Since __ASSUME_PRIVATE_FUTEX is always defined, this patch removes the
!__ASSUME_PRIVATE_FUTEX paths.

Tested with build-many-glibcs.py.

	* nptl/allocatestack.c (allocate_stack): Remove the
	!__ASSUME_PRIVATE_FUTEX paths.
	* nptl/descr.h (header): Remove the !__ASSUME_PRIVATE_FUTEX path.
	* nptl/nptl-init.c (__pthread_initialize_minimal_internal):
	Likewise.
	* sysdeps/i386/nptl/tcb-offsets.sym (PRIVATE_FUTEX): Removed.
	* sysdeps/powerpc/nptl/tcb-offsets.sym (PRIVATE_FUTEX): Likewise.
	* sysdeps/sh/nptl/tcb-offsets.sym (PRIVATE_FUTEX): Likewise.
	* sysdeps/x86_64/nptl/tcb-offsets.sym (PRIVATE_FUTEX): Likewise.
	* sysdeps/i386/nptl/tls.h: (tcbhead_t): Remve the
	!__ASSUME_PRIVATE_FUTEX path.
	* sysdeps/s390/nptl/tls.h (tcbhead_t): Likewise.
	* sysdeps/sparc/nptl/tls.h (tcbhead_t): Likewise.
	* sysdeps/x86_64/nptl/tls.h (tcbhead_t): Likewise.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.S: Remove the
	!__ASSUME_PRIVATE_FUTEX macros.
	* sysdeps/unix/sysv/linux/lowlevellock-futex.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/cancellation.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_PRIVATE_FUTEX): Removed.
2018-05-17 04:25:10 -07:00
Joseph Myers
632a6cbe44 Add narrowing divide functions.
This patch adds the narrowing divide functions from TS 18661-1 to
glibc's libm: fdiv, fdivl, ddivl, f32divf64, f32divf32x, f32xdivf64
for all configurations; f32divf64x, f32divf128, f64divf64x,
f64divf128, f32xdivf64x, f32xdivf128, f64xdivf128 for configurations
with _Float64x and _Float128; __nldbl_ddivl for ldbl-opt.

The changes are mostly essentially the same as for the other narrowing
functions, so the description of those generally applies to this patch
as well.

Tested for x86_64, x86, mips64 (all three ABIs, both hard and soft
float) and powerpc, and with build-many-glibcs.py.

	* math/Makefile (libm-narrow-fns): Add div.
	(libm-test-funcs-narrow): Likewise.
	* math/Versions (GLIBC_2.28): Add narrowing divide functions.
	* math/bits/mathcalls-narrow.h (div): Use __MATHCALL_NARROW.
	* math/gen-auto-libm-tests.c (test_functions): Add div.
	* math/math-narrow.h (CHECK_NARROW_DIV): New macro.
	(NARROW_DIV_ROUND_TO_ODD): Likewise.
	(NARROW_DIV_TRIVIAL): Likewise.
	* sysdeps/ieee754/float128/float128_private.h (__fdivl): New
	macro.
	(__ddivl): Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fdiv and
	ddiv.
	(CFLAGS-nldbl-ddiv.c): New variable.
	(CFLAGS-nldbl-fdiv.c): Likewise.
	* sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add
	__nldbl_ddivl.
	* sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_ddivl): New
	prototype.
	* manual/arith.texi (Misc FP Arithmetic): Document fdiv, fdivl,
	ddivl, fMdivfN, fMdivfNx, fMxdivfN and fMxdivfNx.
	* math/auto-libm-test-in: Add tests of div.
	* math/auto-libm-test-out-narrow-div: New generated file.
	* math/libm-test-narrow-div.inc: New file.
	* sysdeps/i386/fpu/s_f32xdivf64.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_f32xdivf64.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fdiv.c: Likewise.
	* sysdeps/ieee754/float128/s_f32divf128.c: Likewise.
	* sysdeps/ieee754/float128/s_f64divf128.c: Likewise.
	* sysdeps/ieee754/float128/s_f64xdivf128.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_ddivl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_f64xdivf128.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fdivl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_ddivl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fdivl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_ddivl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fdivl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-ddiv.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-fdiv.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_ddivl.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fdiv.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fdivl.c: Likewise.
	* sysdeps/powerpc/fpu/libm-test-ulps: Update.
	* sysdeps/mach/hurd/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2018-05-17 00:40:52 +00:00
Adhemerval Zanella
8c78faa9ef Fix concurrent changes on nscd aware files (BZ #23178)
As indicated by BZ#23178, concurrent access on some files read by nscd
may result non expected data send through service requisition.  This is
due 'sendfile' Linux implementation where for sockets with zero-copy
support, callers must ensure the transferred portions of the the file
reffered by input file descriptor remain unmodified until the reader
on the other end of socket has consumed the transferred data.

I could not find any explicit documentation stating this behaviour on
Linux kernel documentation.  However man-pages sendfile entry [1] states
in NOTES the aforementioned remark.  It was initially pushed on man-pages
with an explicit testcase [2] that shows changing the file used in
'sendfile' call prior the socket input data consumption results in
previous data being lost.

From commit message it stated on tested Linux version (3.15) only TCP
socket showed this issues, however on recent kernels (4.4) I noticed the
same behaviour for local sockets as well.

Since sendfile on HURD is a read/write operation and the underlying
issue on Linux, the straightforward fix is just remove sendfile use
altogether.  I am really skeptical it is hitting some hotstop (there
are indication over internet that sendfile is helpfull only for large
files, more than 10kb) here to justify that extra code complexity or
to pursuit other possible fix (through memory or file locks for
instance, which I am not sure it is doable).

Checked on x86_64-linux-gnu.

	[BZ #23178]
	* nscd/nscd-client.h (sendfileall): Remove prototype.
	* nscd/connections.c [HAVE_SENDFILE] (sendfileall): Remove function.
	(handle_request): Use writeall instead of sendfileall.
	* nscd/aicache.c (addhstaiX): Likewise.
	* nscd/grpcache.c (cache_addgr): Likewise.
	* nscd/hstcache.c (cache_addhst): Likewise.
	* nscd/initgrcache.c (addinitgroupsX): Likewise.
	* nscd/netgroupcache.c (addgetnetgrentX, addinnetgrX): Likewise.
	* nscd/pwdcache.c (cache_addpw): Likewise.
	* nscd/servicescache.c (cache_addserv): Likewise.
	* sysdeps/unix/sysv/linux/Makefile [$(subdir) == nscd]
	(sysdep-CFLAGS): Remove -DHAVE_SENDFILE.
	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_SENDFILE):
	Remove define.

[1] http://man7.org/linux/man-pages/man2/sendfile.2.html
[2] 7b6a329977 (diff-efd6af3a70f0f07c578e85b51e83b3c3)
2018-05-16 13:44:53 -03:00
H.J. Lu
04958880e0 x86-64: Use IFUNC strncat inside libc.so
Unlike i386, we can call hidden IFUNC functions inside libc.so since
x86-64 PLT is always PIC.

Tested on x86-64.

	* sysdeps/x86_64/multiarch/strncat-c.c (STRNCAT_PRIMARY): Removed.
	Include <string/strncat.c>.
	* sysdeps/x86_64/multiarch/strncat.c (__strncat): New strong
	alias.
	(__GI___strncat): New hidden alias.
2018-05-16 09:04:35 -07:00
Joseph Myers
c9992d13c4 Update MIPS libm-test-ulps.
* sysdeps/mips/mips32/libm-test-ulps: Update.
	* sysdeps/mips/mips64/libm-test-ulps: Likewise.
2018-05-16 15:35:26 +00:00
Florian Weimer
2afece36f6 support: Add TEST_COMPARE_BLOB, support_quote_blob
The declaration of support_test_compare_blob uses unsigned long int,
to avoid including <stddef.h>.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2018-05-16 17:00:36 +02:00
Florian Weimer
9761bf4dfa math: Merge strtod_nan_*.h into math-type-macros-*.h
This change will eventually make it possible to compile
stdlib/strtod_nan_main.c as part of math/s_nan_template.c.
2018-05-16 06:03:08 +02:00
Joseph Myers
69a01461ee Add narrowing multiply functions.
This patch adds the narrowing multiply functions from TS 18661-1 to
glibc's libm: fmul, fmull, dmull, f32mulf64, f32mulf32x, f32xmulf64
for all configurations; f32mulf64x, f32mulf128, f64mulf64x,
f64mulf128, f32xmulf64x, f32xmulf128, f64xmulf128 for configurations
with _Float64x and _Float128; __nldbl_dmull for ldbl-opt.

The changes are mostly essentially the same as for the narrowing add
functions, so the description of those generally applies to this patch
as well.  f32xmulf64 for i386 cannot use precision control as used for
add and subtract, because that would result in double rounding for
subnormal results, so that uses round-to-odd with long double
intermediate result instead.  The soft-fp support involves adding a
new FP_TRUNC_COOKED since soft-fp multiplication uses cooked inputs
and outputs.

Tested for x86_64, x86, mips64 (all three ABIs, both hard and soft
float) and powerpc, and with build-many-glibcs.py.

	* math/Makefile (libm-narrow-fns): Add mul.
	(libm-test-funcs-narrow): Likewise.
	* math/Versions (GLIBC_2.28): Add narrowing multiply functions.
	* math/bits/mathcalls-narrow.h (mul): Use __MATHCALL_NARROW.
	* math/gen-auto-libm-tests.c (test_functions): Add mul.
	* math/math-narrow.h (CHECK_NARROW_MUL): New macro.
	(NARROW_MUL_ROUND_TO_ODD): Likewise.
	(NARROW_MUL_TRIVIAL): Likewise.
	* soft-fp/op-common.h (FP_TRUNC_COOKED): Likewise.
	* sysdeps/ieee754/float128/float128_private.h (__fmull): New
	macro.
	(__dmull): Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fmul and
	dmul.
	(CFLAGS-nldbl-dmul.c): New variable.
	(CFLAGS-nldbl-fmul.c): Likewise.
	* sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add
	__nldbl_dmull.
	* sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_dmull): New
	prototype.
	* manual/arith.texi (Misc FP Arithmetic): Document fmul, fmull,
	dmull, fMmulfN, fMmulfNx, fMxmulfN and fMxmulfNx.
	* math/auto-libm-test-in: Add tests of mul.
	* math/auto-libm-test-out-narrow-mul: New generated file.
	* math/libm-test-narrow-mul.inc: New file.
	* sysdeps/i386/fpu/s_f32xmulf64.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_f32xmulf64.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fmul.c: Likewise.
	* sysdeps/ieee754/float128/s_f32mulf128.c: Likewise.
	* sysdeps/ieee754/float128/s_f64mulf128.c: Likewise.
	* sysdeps/ieee754/float128/s_f64xmulf128.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_dmull.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_f64xmulf128.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fmull.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_dmull.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fmull.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_dmull.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fmull.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-dmul.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-fmul.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_dmull.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fmul.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fmull.c: Likewise.
	* sysdeps/powerpc/fpu/libm-test-ulps: Update.
	* sysdeps/mach/hurd/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2018-05-16 00:05:28 +00:00
H.J. Lu
a15529fda8 i386: Replace PREINIT_FUNCTION@PLT with *%eax in call
Since we have loaded address of PREINIT_FUNCTION into %eax, we can
avoid extra branch to PLT slot.

	* sysdeps/i386/crti.S (_init): Replace PREINIT_FUNCTION@PLT
	with *%eax in call.

Acked-by: Christian Brauner (Ubuntu) <christian@brauner.io>
2018-05-14 09:24:06 -07:00
H.J. Lu
98ee36c7a4 x86: Add sysdeps/x86/ldsodefs.h
Merge sysdeps/i386/ldsodefs.h and sysdeps/x86_64/ldsodefs.h into
sysdeps/x86/ldsodefs.h.

Tested on i686 and x86-64.

	* sysdeps/i386/ldsodefs.h: Removed.
	* sysdeps/x86_64/ldsodefs.h: Moved to ...
	* sysdeps/x86/ldsodefs.h: This.
	(La_i86_regs): New.
	(La_i86_retval): Likewise.
	(ARCH_PLTENTER_MEMBERS): Add i86_gnu_pltenter.
	(ARCH_PLTEXIT_MEMBERS): i86_gnu_pltexit.

Acked-by: Christian Brauner (Ubuntu) christian@brauner.io
2018-05-14 09:19:41 -07:00
H.J. Lu
e322ec3282 x86-64: Remove the unnecessary testl in strlen-avx2.S
Since the result of testl is never used, this patch removes it.

Tested on 64-bit AVX2 machine.

	* sysdeps/x86_64/multiarch/strlen-avx2.S (STRLEN): Remove the
	unnecessary testl.
2018-05-14 03:41:35 -07:00
Alan Modra
0937e209a7 R_PARISC_TLS_DTPOFF32 reloc handling
* sysdeps/hppa/dl-machine.h (elf_machine_rela): Add
	R_PARISC_TLS_DTPOFF32 reloc addend.
2018-05-13 08:32:28 +09:30
Tulio Magno Quites Machado Filho
5db7d705db powerpc: Fix the compiler type used with C++ when -mabi=ieeelongdouble
When compiling C++ code with -mabi=ieeelongdouble, KCtype is
unavailable and the long double type should be used instead.

This is also providing macro __HAVE_FLOAT128_UNLIKE_LDBL in order to
identify the kind of long double type is being used in the current
compilation unit.
Notice that bits/floatn.h cannot benefit from the new macro due to order
of header inclusion.

	* bits/floatn-common.h: Define __HAVE_FLOAT128_UNLIKE_LDBL.
	* math/math.h: Restrict the prototype definition for the functions
	issignaling(_Float128) and iszero(_Float128); and template
	__iseqsig_type<_Float128>, from __HAVE_DISTINCT_FLOAT128 to
	__HAVE_FLOAT128_UNLIKE_LDBL.
	* sysdeps/powerpc/bits/floatn.h [__HAVE_FLOAT128
	&& (!__GNUC_PREREQ (7, 0) || defined __cplusplus)
	&& __LDBL_MANT_DIG__ == 113]: Use long double suffix for
	__f128() constants; define the type _Float128 as long double;
	and reuse long double in __CFLOAT128.

Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
2018-05-11 18:05:03 -03:00
Joseph Myers
b4d5b8b021 Do not include math-barriers.h in math_private.h.
This patch continues the math_private.h cleanup by stopping
math_private.h from including math-barriers.h and making the users of
the barrier macros include the latter header directly.  No attempt is
made to remove any math_private.h includes that are now unused, except
in strtod_l.c where that is done to avoid line number changes in
assertions, so that installed stripped shared libraries can be
compared before and after the patch.  (I think the floating-point
environment support in math_private.h should also move out - some
architectures already have fenv_private.h as an architecture-internal
header included from their math_private.h - and after moving that out
might be a better time to identify unused math_private.h includes.)

Tested for x86_64 and x86, and tested with build-many-glibcs.py that
installed stripped shared libraries are unchanged by the patch.

	* sysdeps/generic/math_private.h: Do not include
	<math-barriers.h>.
	* stdlib/strtod_l.c: Include <math-barriers.h> instead of
	<math_private.h>.
	* math/fromfp.h: Include <math-barriers.h>.
	* math/math-narrow.h: Likewise.
	* math/s_nextafter.c: Likewise.
	* math/s_nexttowardf.c: Likewise.
	* sysdeps/aarch64/fpu/s_llrint.c: Likewise.
	* sysdeps/aarch64/fpu/s_llrintf.c: Likewise.
	* sysdeps/aarch64/fpu/s_lrint.c: Likewise.
	* sysdeps/aarch64/fpu/s_lrintf.c: Likewise.
	* sysdeps/i386/fpu/s_nextafterl.c: Likewise.
	* sysdeps/i386/fpu/s_nexttoward.c: Likewise.
	* sysdeps/i386/fpu/s_nexttowardf.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_atan2.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_atanh.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_exp.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_exp2.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_j0.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_sqrt.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_expm1.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fma.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fmaf.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_log1p.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_nearbyint.c: Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c: Likewise.
	* sysdeps/ieee754/flt-32/e_atanhf.c: Likewise.
	* sysdeps/ieee754/flt-32/e_j0f.c: Likewise.
	* sysdeps/ieee754/flt-32/s_expm1f.c: Likewise.
	* sysdeps/ieee754/flt-32/s_log1pf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_nearbyintf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_nextafterf.c: Likewise.
	* sysdeps/ieee754/k_standardl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_asinl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_expl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_powl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fmal.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_nearbyintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_nextafterl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_nexttoward.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_nexttowardf.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_asinl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fmal.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttoward.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_rintl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_atanhl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_j0l.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fma.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fmal.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_nexttoward.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_nexttowardf.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/s_nexttowardfd.c: Likewise.
	* sysdeps/m68k/m680x0/fpu/s_nextafterl.c: Likewise.
2018-05-11 15:11:38 +00:00
Florian Weimer
fc79706a32 time: Use 64-bit time values for time zone parsing 2018-05-11 16:30:30 +02:00
Florian Weimer
89aacb513e sunrpc: Remove stray exports without --enable-obsolete-rpc [BZ #23166]
This is needed to avoid a warning when linking against libtirpc:

/lib64/libc.so.6: warning: common of `rpc_createerr@@TIRPC_0.3.0' overridden by definition
/usr/lib64/libtirpc.so: warning: defined here

This ld warning is not enabled by default; -Wl,--warn-common enables it.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2018-05-11 15:36:50 +02:00