Commit Graph

33663 Commits

Author SHA1 Message Date
Joseph Myers
458b94f63e Update aarch64 bits/hwcap.h, dl-procinfo.c for Linux 4.16 HWCAP_ASIMDFHM.
This patch updates the aarch64 bits/hwcap.h and dl-procinfo.c for the
new HWCAP_ASIMDFHM value in Linux 4.16.

Tested with build-many-glibcs.py for aarch64-linux-gnu.

	* sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h (HWCAP_ASIMDFHM):
	New macro.
	* sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c (_DL_HWCAP_COUNT):
	Increase to 24.
	(_dl_aarch64_cap_flags): Add asimdfhm.
2018-04-20 16:36:00 +00:00
Samuel Thibault
b75a9b26cf hurd xfails: Add missing bug references 2018-04-20 17:14:13 +02:00
Samuel Thibault
cbc256b1dc hurd: XFAIL tests for signal features not implemented yet
* conform/data/signal.h-data (SA_SIGINFO, SA_NOCLDWAIT): XFAIL on
	i386-gnu.
	* conform/data/sys/wait.h-data (WIFCONTINUED, WEXITED, WSTOPPED,
	WCONTINUED, WNOWAIT): XFAIL on i386-gnu.
2018-04-20 02:27:54 +02:00
Samuel Thibault
f00b62ec89 hurd: XFAIL appearance of sched_param and sched_priority from <sys/types.h>
Reported at BZ #23088.

	* sysdeps/mach/hurd/i386/Makefile
	(test-xfail-POSIX/fcntl.h/conform): Add.
	(test-xfail-POSIX/signal.h/conform): Add.
	(test-xfail-POSIX/semaphore.h/conform): Add.
	(test-xfail-POSIX/regex.h/conform): Add.
	(test-xfail-POSIX/aio.h/conform): Add.
	(test-xfail-POSIX/mqueue.h/conform): Add.
	(test-xfail-POSIX/sys/types.h/conform): Add.
	(test-xfail-UNIX98/fcntl.h/conform): Add.
	(test-xfail-UNIX98/netdb.h/conform): Add.
	(test-xfail-UNIX98/signal.h/conform): Add.
	(test-xfail-UNIX98/semaphore.h/conform): Add.
	(test-xfail-UNIX98/regex.h/conform): Add.
	(test-xfail-UNIX98/aio.h/conform): Add.
	(test-xfail-UNIX98/ftw.h/conform): Add.
	(test-xfail-UNIX98/mqueue.h/conform): Add.
	(test-xfail-UNIX98/netinet/in.h/conform): Add.
	(test-xfail-UNIX98/sys/wait.h/conform): Add.
	(test-xfail-UNIX98/sys/sem.h/conform): Add.
	(test-xfail-UNIX98/sys/uio.h/conform): Add.
	(test-xfail-UNIX98/sys/socket.h/conform): Add.
	(test-xfail-UNIX98/sys/types.h/conform): Add.
	(test-xfail-UNIX98/stdlib.h/conform): Add.
	(test-xfail-UNIX98/arpa/inet.h/conform): Add.
	(test-xfail-POSIX2008/fcntl.h/conform): Add.
	(test-xfail-POSIX2008/netdb.h/conform): Add.
	(test-xfail-POSIX2008/signal.h/conform): Add.
	(test-xfail-POSIX2008/semaphore.h/conform): Add.
	(test-xfail-POSIX2008/regex.h/conform): Add.
	(test-xfail-POSIX2008/aio.h/conform): Add.
	(test-xfail-POSIX2008/mqueue.h/conform): Add.
	(test-xfail-POSIX2008/netinet/in.h/conform): Add.
	(test-xfail-POSIX2008/sys/wait.h/conform): Add.
	(test-xfail-POSIX2008/sys/socket.h/conform): Add.
	(test-xfail-POSIX2008/sys/types.h/conform): Add.
	(test-xfail-POSIX2008/arpa/inet.h/conform): Add.
	(test-xfail-XOPEN2K/fcntl.h/conform): Add.
	(test-xfail-XOPEN2K/netdb.h/conform): Add.
	(test-xfail-XOPEN2K/signal.h/conform): Add.
	(test-xfail-XOPEN2K/semaphore.h/conform): Add.
	(test-xfail-XOPEN2K/regex.h/conform): Add.
	(test-xfail-XOPEN2K/aio.h/conform): Add.
	(test-xfail-XOPEN2K/ftw.h/conform): Add.
	(test-xfail-XOPEN2K/mqueue.h/conform): Add.
	(test-xfail-XOPEN2K/netinet/in.h/conform): Add.
	(test-xfail-XOPEN2K/sys/wait.h/conform): Add.
	(test-xfail-XOPEN2K/sys/sem.h/conform): Add.
	(test-xfail-XOPEN2K/sys/uio.h/conform): Add.
	(test-xfail-XOPEN2K/sys/socket.h/conform): Add.
	(test-xfail-XOPEN2K/sys/types.h/conform): Add.
	(test-xfail-XOPEN2K/stdlib.h/conform): Add.
	(test-xfail-XOPEN2K/arpa/inet.h/conform): Add.
	(test-xfail-XOPEN2K8/fcntl.h/conform): Add.
	(test-xfail-XOPEN2K8/netdb.h/conform): Add.
	(test-xfail-XOPEN2K8/signal.h/conform): Add.
	(test-xfail-XOPEN2K8/semaphore.h/conform): Add.
	(test-xfail-XOPEN2K8/regex.h/conform): Add.
	(test-xfail-XOPEN2K8/aio.h/conform): Add.
	(test-xfail-XOPEN2K8/ftw.h/conform): Add.
	(test-xfail-XOPEN2K8/mqueue.h/conform): Add.
	(test-xfail-XOPEN2K8/netinet/in.h/conform): Add.
	(test-xfail-XOPEN2K8/sys/wait.h/conform): Add.
	(test-xfail-XOPEN2K8/sys/sem.h/conform): Add.
	(test-xfail-XOPEN2K8/sys/uio.h/conform): Add.
	(test-xfail-XOPEN2K8/sys/socket.h/conform): Add.
	(test-xfail-XOPEN2K8/sys/types.h/conform): Add.
	(test-xfail-XOPEN2K8/stdlib.h/conform): Add.
	(test-xfail-XOPEN2K8/arpa/inet.h/conform): Add.
2018-04-20 01:56:57 +02:00
Samuel Thibault
c5896a4595 Revert "hurd: Fix mach installed headers test"
This reverts commit d4379e0216: the proper
headers are actually already getting installed.
2018-04-20 01:27:13 +02:00
Samuel Thibault
81b032c833 Drop fpregset unused symbol exposition
* sysdeps/arm/sys/ucontext.h: Remove fpregset struct name, unused and
	non-compliant.
	* sysdeps/i386/sys/ucontext.h: Likewise.
	* sysdeps/m68k/sys/ucontext.h: Likewise.
	* sysdeps/mips/sys/ucontext.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h: Likewise.
2018-04-20 01:27:13 +02:00
Samuel Thibault
5dbfe13b35 hurd: Fix hurd installed headers test
* sysdeps/hurd/include/hurd.h [!_ISOMAC]: Do not declare libc hidden
	prototypes.
	* sysdeps/hurd/include/hurd/fd.h [!_ISOMAC]: Likewise.
	* sysdeps/hurd/include/hurd/signal.h [!_ISOMAC]: Likewise.
2018-04-20 00:16:40 +02:00
Samuel Thibault
a279b8ed9b hurd: Add missing RLIM_SAVED_MAX/CUR
* bits/resource.h (RLIM_SAVED_MAX, RLIM_SAVED_CUR): New macros.
2018-04-19 23:55:13 +02:00
Samuel Thibault
a564872d2d hurd: Fix termios.h symbols
* bits/termios.h [__USE_XOPEN || __USE_XOPEN2K8] (IXANY): Define.
	[__USE_XOPEN && !__USE_XOPEN2K] (IUCLC, OLCUC): Define.
	[__USE_XOPEN] (OFDEL): New macro.
	[__USE_XOPEN && !__USE_XOPEN2K] (XCASE): New macro.
2018-04-19 23:50:12 +02:00
Samuel Thibault
ed37092475 hurd: remove non-standard siginfo symbol
* bits/types/siginfo_t.h: Remove siginfo struct name, unused and
	non-compliant.
2018-04-19 21:43:44 +02:00
Samuel Thibault
5cd2931ab8 hurd: fix sigevent's sigev_notify_attributes field type
* sysdeps/pthread/bits/types/sigevent_t.h: New file, based on the
	generic version but include <bits/pthreadtypes.h> to make struct
	sigevent's sigev_notify_attributes field a pthread_attr_t*.
2018-04-19 21:43:44 +02:00
Chung-Lin Tang
9f0437e862 Update sysdeps/nios2/libm-test-ulps 2018-04-19 12:00:58 -07:00
Samuel Thibault
e60c3f2bb7 hurd: Avoid exposing all <sched.h> symbols from sys/types.h
* bits/sched.h: Include <bits/types/struct_sched_param.h> and move struct
	sched_param definition to it.
	* sysdeps/unix/sysv/linux/bits/sched.h: Likewise.
	* bits/types/struct_sched_param.h: New file.
	* sysdeps/htl/bits/types/struct___pthread_attr.h: Include
	<bits/types/struct_sched_param.h> instead of <sched.h>.
	* posix/Makefile (headers): Add bits/types/struct_sched_param.h.
2018-04-19 20:24:36 +02:00
Adhemerval Zanella
50511ca466 Fix mips64n32 getdents alias
Fix commit 298d0e3 for mips64n32, checked on a mips64n32-linux-gnu build.

	* sysdeps/unix/sysv/linux/mips/mips64/getdents64.c (__getdents64):
	Only alias to __getdents for _DIRENT_MATCHES_DIRENT64.
2018-04-19 15:21:07 -03:00
Samuel Thibault
77b9339028 hurd: Fix symbols exposition
* bits/in.h [!__USE_MISC]: Do not define struct ip_opts.
	* conform/data/netinet/in.h-data: Allow sin_ and sin6_ prefix.
	* sysdeps/gnu/bits/msq.h (struct msqid_ds): Use __wait_queue struct
	instead of wait_queue.
	* sysdeps/gnu/bits/shm.h (struct shmid_ds): Use __vm_area_struct
	instead of vm_area_struct.
2018-04-19 20:14:45 +02:00
Adhemerval Zanella
298d0e3129 Consolidate Linux getdents{64} implementation
This patch consolidates Linux getdents{64} implementation on just
the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones.

Although this symbol is used only internally, the non-LFS version
still need to be build due the non-LFS getdirentries which requires
its semantic.

The non-LFS default implementation now uses the wordsize-32 as base
which uses getdents64 syscall plus adjustment for overflow (it allows
to use the same code for architectures that does not support non-LFS
getdents syscall).  It has two main differences to wordsize-32 one:

  - DIRENT_SET_DP_INO is added to handle alpha requirement to zero
    the padding.

  - alloca is removed by allocating a bounded temporary buffer (it
    increases stack usage by roughly 276 bytes).

The default implementation handle the Linux requirements:

  * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0.

  * getdents64 is always built and aliased to getdents for ABIs
    that define _DIRENT_MATCHES_DIRENT64 to 1.

  * A compat symbol is added for getdents64 for ABI that used to
    export the old non-LFS version.

Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu,
sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, and
powerpc64le-linux-gnu.

	* sysdeps/unix/sysv/linux/alpha/getdents.c: Add comments with alpha
	requirements.
	 (_DIRENT_MATCHES_DIRENT64): Undef
	* sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file.
	* sysdeps/unix/sysv/linux/generic/getdents.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise.
	* sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by
	use getdents64 syscalls as base.
	* sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility
	symbol if required.
	* sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c
	(__get_clockfreq_via_proc_openprom): Use __getdents64.
	* sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
2018-04-19 08:49:52 -03:00
Stefan Liebler
0085be1415 Disable lock elision for mutex pretty printer tests.
If e.g. the testcase nptl/test-mutex-printers is run
with enabled lock-elision, it fails on s390x with:
Error: Response does not match the expected pattern.
Command: print *mutex
Expected pattern: pthread_mutex_t
Response:  No symbol "mutex" in current context.
(gdb)

See https://www.sourceware.org/ml/libc-alpha/2018-03/msg00583.html
for more details.

In fact the mutex pretty printer tests rely on looking at the
internal details of the lock, thus we disable it by setting up
the GLIB_TUNABLES environment variable inside gdb.

ChangeLog:

	* scripts/test_printers_common.py (init_test): Disable lock elision.
2018-04-19 12:45:11 +02:00
Stefan Liebler
da796524f8 Use volatile global counters in test-tgmath.c.
If build with -Os on s390x, the test-tgmath fails with:
float functions not called often enough (-10000)

Within compile_testf(), the counter (count_float) is saved
before the complex functions are called.
Afterwards the saved counter differs to the current-counter.

But the tests with the complex functions do not increment count_float!
Instead count_float is saved to a register before calling totalorder
and totalordermag which both increment count_float.
The compiler is allowed to do that as totalorderf and totalordermagf
is declared with __attribute__ ((__const__)) in math/bits/mathcalls.h.

Thus this patch adjusts the global counters to be volatile.
Then count_float is saved after totalordermag.

ChangeLog:

	* math/test-tgmath.c (count_double, count_float,
	count_ldouble, count_cdouble, count_cfloat,
	count_cldouble): Use volatile int.
2018-04-19 12:32:50 +02:00
Samuel Thibault
f55a4fdefb hurd: Update struct statfs according to struct statvfs
* sysdeps/mach/hurd/bits/statfs.h (struct statfs): Make f_bsize,
	f_namemax, f_frsize, and f_flag fields unsigned long int instead of
	unsigned int.
	(struct statfs64): Likewise.
2018-04-19 02:25:03 +02:00
Samuel Thibault
9d9f8f03af hurd: Fix standard compliance of some statvfs fields
Standards require that the f_bsize, f_frsize, f_flag and f_namemax fields be
unsigned long.  They used to be only unsigned on hurd, which happens to be
compatible with unsigned long on the only existing, 32bit, port.  We can
thus merely fix the type.

	* sysdeps/mach/hurd/bits/statvfs.h (struct statvfs): Make f_bsize,
	f_namemax, f_frsize, and f_flag fields unsigned long int instead of
	unsigned int.
	(struct statvfs64): Likewise.
2018-04-19 02:05:54 +02:00
Samuel Thibault
0dd25301f6 hurd: xfail some structure fields ABI incompatibility with standards
* sysdeps/mach/hurd/i386/Makefile [$(subdir) = conform]
	(conformtest-xfail-conds): Add i386-gnu.
	* conform/data/fcntl.h-data (flock.l_type, flock.l_whence): XFAIL for
	i386-gnu.
	* conform/data/sys/ipc.h-data (ipc_perm.uid, ipc_perm.gid,
	ipc_perm.cuid, ipc_perm.cgid): Likewise.
	* conform/data/sys/msg.h-data (msqid_ds.msg_lspid,
	msqid_ds.msg_lrpid): Likewise.
	* conform/data/sys/shm.h-data (shmid_ds.shm_lpid, shmid_ds.shm_cpid):
	Likewise.
	* conform/data/sys/stat.h-data (stat.st_dev): Likewise.
	* conform/data/sys/statvfs.h-data (statvfs.f_fsid): Likewise.
2018-04-19 01:52:51 +02:00
Samuel Thibault
d4379e0216 hurd: Fix mach installed headers test
* include/lock-intern.h [!_ISOMAC]: Do not declare libc hidden
	prototypes.
	* include/mach.h [!_ISOMAC]: Likewise.
	* include/mach/mig_support.h [!_ISOMAC]: Likewise.
	* include/mach_error.h [!_ISOMAC]: Likewise.
2018-04-19 00:42:14 +02:00
Samuel Thibault
c15f10ee78 Revert "Fix sched_param"
This reverts commit 783c482030 which
accidentaly flew out.
2018-04-19 00:09:58 +02:00
Samuel Thibault
3dc0814cba conform sys/un.h: Allow sun_ prefix, not only sun_len
* conform/data/sys/un.h-data: Allow sun_ prefix.
2018-04-18 21:07:44 +02:00
Samuel Thibault
783c482030 Fix sched_param 2018-04-18 21:07:44 +02:00
Joseph Myers
d6397de369 Make build-many-glibcs.py build GCC for powerpcspe with --enable-obsolete.
The powerpcspe GCC port has been obsoleted in GCC 8 for not having had
the removal of code for non-SPE processors completed.  This patch
accordingly arranges for build-many-glibcs.py to configure GCC with
--enable-obsolete for affected configurations.  This is temporary;
either the port gets cleaned up and unobsoleted in GCC and the
configure option can be removed, or the port gets removed in GCC and
we should remove the corresponding glibc support.

Tested with build-many-glibcs.py for the affected configurations.

	* scripts/build-many-glibcs.py (Context.add_all_configs): Use
	--enable-obsolete for powerpc-linux-gnuspe.
2018-04-18 16:07:19 +00:00
Samuel Thibault
c4375964db hurd: Fix spurious installation of headers defining hidden prototypes
* sysdeps/mach/include/lock-intern.h: Move to include/.
	* sysdeps/mach/include/mach.h: Move to include/.
	* sysdeps/mach/include/mach/mig_support.h: Move to include/mach/.
	* sysdeps/mach/include/mach_error.h: Move to include/.
2018-04-18 02:07:17 +02:00
Samuel Thibault
8323a9022e hurd: fix conformity test for sys/un.h
sun_len is used by BSD systems, and conformant.

	* conform/data/sys/un.h-data (struct sockaddr_un): Allow sun_len
	member.
2018-04-18 01:10:23 +02:00
Adhemerval Zanella
743b9c2a98 arm: Remove ununsed ARM code in optimized implementation
This patch removes the ununsed ARM code path for armv6t2 memchr and
strlen and armv7 memch and strcmp.  In all implementation, the ARM
code is not used in any possible build (unless glibc is explicit
build with the non-documented NO_THUMB compiler flag) and for armv7
the resulting code either produces wrong results (memchr) and throw
build error (strcmp).

Checked on arm-linux-gnueabihf built targeting both armv6 and
armv7.

	* sysdeps/arm/armv6t2/memchr.S (memchr): Remove ARM code path.
	* sysdeps/arm/armv6t2/strlen.S (memchr): Likewise.
	* sysdeps/arm/armv7/multiarch/memchr_neon.S (memchr): Likewise.
	* sysdeps/arm/armv7/strcmp.S (strcmp): Likewise.
2018-04-16 17:24:31 -03:00
Andreas Schwab
326e74e7c1 Add aliases to recognize normalized charset names (bug 19527) 2018-04-16 17:30:56 +02:00
Patrick McGehearty
a14d8acd32 Improves __ieee754_exp(x) performance by 18-37% when |x| < 1.0397
Adds a fast path to e_exp.c when |x| < 1.03972053527832.
When values are tested in isolation, reduction in execution
time is: aarch 30%, sparc 18%, x86 37%.
When comparing benchtests/bench.out which includes values
outside that range, the gains are:
aarch 8%, sparc 5%, x86 9%.

make check is clean (no increase in ulp for any math test).
Testing 20M values for each rounding mode in that range shows
approximately one in 200 values is off by 1 ulp. No value tested
for exp(x) changed by 2 or more ulp.

No observed change in performance or accuracy for x outside
fast path range.

These changes will be active for all platforms that don't provide
their own exp() routines. They will also be active for ieee754
versions of ccos, ccosh, cosh, csin, csinh, sinh, exp10, gamma, and
erf.
2018-04-15 18:46:37 -04:00
DJ Delorie
a700e7cb37 Update kernel version in syscall-names.list to 4.16.
Linux 4.16 does not add any new syscalls; this patch updates the
version number in syscall-names.list to reflect that it's still
current for 4.16.

Tested for x86_64 (compilation with build-many-glibcs.py, using Linux
4.16).

	* sysdeps/unix/sysv/linux/syscall-names.list: Update kernel
	version to 4.16.
2018-04-12 15:25:50 -04:00
Stefan Liebler
d8abfab7d4 S390: Fix struct sigaction for 31bit in kernel_sigaction.h.
The recent commit b4a5d26d88
"linux: Consolidate sigaction implementation" changed the definition
of struct sigaction for s390 (31bit). Unfortunately the order of the
fields were wrong.

This leads to blocking testcases e.g. nptl/tst-sem11.
A thread which blocks due to sem_wait() is cancelled via pthread_cancel()
and the signal-handler sigcancel_handler (see <glibc-src>/nptl/nptl-init.c
is called.
But it just returns as the siginfo_t argument is not setup by the kernel.
Then the main-thread is blocking due to pthread_join().

The flag SA_SIGINFO is set in sa_flags in struct sigaction and
is copied to the "kernel_sigaction.h" struct by the sigaction() call,
but due to the wrong ordering of the struct fields,
the kernel does not recognize it.
2018-04-12 09:37:26 +02:00
Florian Weimer
583a27d525 resolv: Fully initialize struct mmsghdr in send_dg [BZ #23037] 2018-04-09 10:08:16 +02:00
Adhemerval Zanella
942de61a89 Consolidate Linux readdir{64}{_r} implementation
This patch consolidates Linux readdir{64}{_r} implementation on just
the default sysdeps/unix/sysv/linux/readdir{64}{_r}.c ones.  The
default implementation handle the Linux requirements:

  * readdir{_r} is only built for _DIRENT_MATCHES_DIRENT64 being 0.

  * readdir64{_r} is always built and aliased to readdir{_r} for
    ABI that define _DIRENT_MATCHES_DIRENT64.

  * A compat symbol is added for readdir64{_r} for ABI that used to
    export the old non-LFS version.

Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu,
sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, and
powerpc64le-linux-gnu.

	* sysdeps/posix/readdir.c (__READDIR, __GETDENTS, DIRENTY_TYPE,
	__READDIR_ALIAS): Undefine after usage.
	* sysdeps/posix/readdir_r.c (__READDIR_R, __GETDENTS, DIRENT_TYPE,
	__READDIR_R_ALIAS): Likewise.
	* sysdeps/unix/sysv/linux/arm/readdir64.c: Remove file.
	* sysdeps/unix/sysv/linux/arm/readdir64_r.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/readdir64.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/readdir64_r.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/readdir64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/readdir64_r.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/readdir64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/readdir64_r.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/readdir64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/readdir64_r.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/readdir64.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/readdir64_r.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/readdir.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/readdir64.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/readdir64_r.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/readdir_r.c: Likewise.
	* sysdeps/unix/sysv/linux/readdir.c: New file.
	* sysdeps/unix/sysv/linux/readdir_r.c: Likewise.
	* sysdeps/unix/sysv/linux/readdir64.c: Add compat symbol if required.
	* sysdeps/unix/sysv/linux/readdir64_r.c: Likewise.
2018-04-06 17:49:02 -03:00
Adhemerval Zanella
243f59e5aa Update i386 libm-test-ulps.
Updated ulps after recent commit "[PATCH 1/7] sin/cos slow paths:
avoid slow paths for small inputs"
(19a8b9a300).

	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Update.
2018-04-06 17:24:15 -03:00
Andreas Schwab
690c3475f1 Fix missing @ before texinfo command 2018-04-06 08:56:24 +02:00
Adhemerval Zanella
bbc2062a75 Update SPARC libm-test-ulps.
* sysdeps/sparc/fpu/libm-test-ulps: Update.
2018-04-05 17:10:03 -03:00
Adhemerval Zanella
fa7c619978 Update ARM libm-test-ulps.
* sysdeps/arm/libm-test-ulps: Update.
2018-04-05 17:10:03 -03:00
Adhemerval Zanella
b4a5d26d88 linux: Consolidate sigaction implementation
This patch consolidates all Linux sigaction implementations on the default
sysdeps/unix/sysv/linux/sigaction.c.  The idea is remove redundant code
and simplify new ports addition by following the current generic
Linux User API (UAPI).

The UAPI for new ports defines a generic extensible sigaction struct as:

  struct sigaction
  {
    __sighandler_t sa_handler;
    unsigned long sa_flags;
  #ifdef SA_RESTORER
    void (*sa_restorer) (void);
  #endif
    sigset_t sa_mask;
  };

Where SA_RESTORER is just placed for compatibility reasons (news ports
should not add it).  A similar definition is used on generic
kernel_sigaction.h.

The user exported sigaction definition is not changed, so for most
architectures it requires an adjustment to kernel expected one for the
syscall.

The main changes are:

  - All architectures now define and use a kernel_sigaction struct meant
    for the syscall, even for the architectures where the user sigaction
    has the same layout of the kernel expected one (s390-64 and ia64).
    Although it requires more work for these architectures, it simplifies
    the generic implementation. Also, sigaction is hardly a hotspot where
    micro optimization would play an important role.

  - The generic kernel_sigaction definition is now aligned with expected
    UAPI one for newer ports, where SA_RESTORER and sa_restorer are not
    expected to be defined.  This means adding kernel_sigaction for
    current architectures that does define it (m68k, nios2, powerpc, s390,
    sh, sparc, and tile) and which rely on previous generic definition.

  - Remove old MIPS usage of sa_restorer.  This was removed since 2.6.27
    (2957c9e61ee9c - "[MIPS] IRIX: Goodbye and thanks for all the fish").

  - The remaining arch-specific sigaction.c are to handle ABI idiosyncrasies
    (like SPARC kernel ABI for rt_sigaction that requires an additional
    stub argument).

So for new ports the generic implementation should work if its uses
Linux UAPI.  If SA_RESTORER is still required (due some architecture
limitation), it should define its own kernel_sigaction.h, define it and
include generic header (assuming it still uses the default generic kernel
layout).

Checked on x86_64-linux-gnu, i686-linux-gnu, arm-linux-gnueabihf,
aarch64-linux-gnu, sparc64-linux-gnu, sparcv9-linux-gnu, powerpc-linux-gnu,
powerpc64-linux-gnu, ia64-linux-gnu and alpha-linux-gnu.  I also checked the
build on all remaining affected ABIs.

	* sysdeps/unix/sysv/linux/aarch64/sigaction.c: Use default Linux version
	as base implementation.
	* sysdeps/unix/sysv/linux/arm/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h: Add include guards,
	remove unrequired definitions and update comments.
	* sysdeps/unix/sysv/linux/kernel_sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel_sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/kernel_sigaction.h: New file.
	* sysdeps/unix/sysv/linux/m68k/kernel_sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/nios2/kernel_sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/kernel_sigaction: Likewise.
	* sysdeps/unix/sysv/linux/s390/kernel_sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/kernel_sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/kernel_sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/kernel_sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sigaction.c: Remove file.
	* sysdeps/unix/sysv/linux/mips/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/sigaction.c: Add STUB, SET_SA_RESTORER,
	and RESET_SA_RESTORER hooks.
2018-04-05 17:09:50 -03:00
Stefan Liebler
db9e55ff36 S390: Regenerate ULPs.
Updated ulps after recent commit
"[PATCH 1/7] sin/cos slow paths: avoid slow paths for small inputs"
(19a8b9a300).

ChangeLog:

	* sysdeps/s390/fpu/libm-test-ulps: Regenerated.
2018-04-05 16:24:06 +02:00
Florian Weimer
cf138b0c83 manual: Various fixes to the mbstouwcs example, and mbrtowc update
The example did not work because the null byte was not converted, and
mbrtowc was called with a zero-length input string.  This results in a
(size_t) -2 return value, so the function always returns NULL.

The size computation for the heap allocation of the result was
incorrect because it did not deal with integer overflow.

Error checking was missing, and the allocated memory was not freed on
error paths.  All error returns now set errno.  (Note that there is an
assumption that free does not clobber errno.)

The slightly unportable comparision against (size_t) -2 to catch both
(size_t) -1 and (size_t) -2 return values is gone as well.

A null wide character needs to be stored in the result explicitly, to
terminate it.

The description in the manual is updated to deal with these finer
points.  The (size_t) -2 behavior (consuming the input bytes) matches
what is specified in ISO C11.
2018-04-05 12:52:19 +02:00
Florian Weimer
0f33925269 manual: Move mbstouwcs to an example C file 2018-04-05 12:50:58 +02:00
Samuel Thibault
08e92e2443 Revert "hurd: Avoid PLTs for longjmp & siglongjmp"
This reverts commit e5f9508a32.
2018-04-05 09:38:58 +02:00
Samuel Thibault
c120981d72 hurd: Avoid PLT for dirfd
* include/dirent.h (dirfd): Add hidden proto.
	* dirent/dirfd.c (dirfd): Add hidden def.
	* sysdeps/mach/hurd/dirfd.c (dirfd): Add hidden def.
	* sysdeps/posix/dirfd.c (dirfd): Add hidden def.
2018-04-05 01:52:29 +02:00
Samuel Thibault
e5f9508a32 hurd: Avoid PLTs for longjmp & siglongjmp
* include/setjmp.h (longjmp, siglongjmp): Add hidden protos.
	* setjmp/longjmp.c (longjmp, siglongjmp): Add hidden defs.
	* sysdeps/s390/longjmp.c (longjmp, siglongjmp): Add hidden defs.
2018-04-04 23:19:18 +00:00
Tulio Magno Quites Machado Filho
b2fd61ca9b powerpc: Update sin, cos and sincos ULPs
* sysdeps/powerpc/fpu/libm-test-ulps: Increase double-precision
	sin, cos and sincos to 1 ULP.

Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
2018-04-04 19:17:13 -03:00
Maciej W. Rozycki
e7feec374c elf: Correct absolute (SHN_ABS) symbol run-time calculation [BZ #19818]
Do not relocate absolute symbols by the base address.  Such symbols have
SHN_ABS as the section index and their value is not supposed to be
affected by relocation as per the ELF gABI[1]:

"SHN_ABS
    The symbol has an absolute value that will not change because of
    relocation."

The reason for our non-conformance here seems to be an old SysV linker
bug causing symbols like _DYNAMIC to be incorrectly emitted as absolute
symbols[2].  However in a previous discussion it was pointed that this
is seriously flawed by preventing the lone purpose of the existence of
absolute symbols from being used[3]:

"On the contrary, the only interpretation that makes sense to me is that
it will not change because of relocation at link time or at load time.
Absolute symbols, from the days of the earliest linking loaders, have
been used to represent addresses that are outside the address space of
the module (e.g., memory-mapped addresses or kernel gateway pages).
They've even been used to represent true symbolic constants (e.g.,
system entry point numbers, sizes, version numbers).  There's no other
way to represent a true absolute symbol, while the meaning you seek is
easily represented by giving the symbol a non-negative st_shndx value."

and we ought to stop supporting our current broken interpretation.

Update processing for dladdr(3) and dladdr1(3) so that SHN_ABS symbols
are ignored, because under the corrected interpretation they do not
represent addresses within a mapped file and therefore are not supposed
to be considered.

References:

[1] "System V Application Binary Interface - DRAFT - 19 October 2010",
    The SCO Group, Section "Symbol Table",
    <http://www.sco.com/developers/gabi/2012-12-31/ch4.symtab.html>

[2] Alan Modra, "Absolute symbols"
    <https://sourceware.org/ml/binutils/2012-05/msg00019.html>

[3] Cary Coutant, "Re: Absolute symbols"
    <https://sourceware.org/ml/binutils/2012-05/msg00020.html>

	[BZ #19818]
	* sysdeps/generic/ldsodefs.h (SYMBOL_ADDRESS): Handle SHN_ABS
	symbols.
	* elf/dl-addr.c (determine_info): Ignore SHN_ABS symbols.
	* elf/tst-absolute-sym.c: New file.
	* elf/tst-absolute-sym-lib.c: New file.
	* elf/tst-absolute-sym-lib.lds: New file.
	* elf/Makefile (tests): Add `tst-absolute-sym'.
	(modules-names): Add `tst-absolute-sym-lib'.
	(LDLIBS-tst-absolute-sym-lib.so): New variable.
	($(objpfx)tst-absolute-sym-lib.so): New dependency.
	($(objpfx)tst-absolute-sym): New dependency.
2018-04-04 23:09:37 +01:00
Maciej W. Rozycki
10a446ddcc elf: Unify symbol address run-time calculation [BZ #19818]
Wrap symbol address run-time calculation into a macro and use it
throughout, replacing inline calculations.

There are a couple of variants, most of them different in a functionally
insignificant way.  Most calculations are right following RESOLVE_MAP,
at which point either the map or the symbol returned can be checked for
validity as the macro sets either both or neither.  In some places both
the symbol and the map has to be checked however.

My initial implementation therefore always checked both, however that
resulted in code larger by as much as 0.3%, as many places know from
elsewhere that no check is needed.  I have decided the size growth was
unacceptable.

Having looked closer I realized that it's the map that is the culprit.
Therefore I have modified LOOKUP_VALUE_ADDRESS to accept an additional
boolean argument telling it to access the map without checking it for
validity.  This in turn has brought quite nice results, with new code
actually being smaller for i686, and MIPS o32, n32 and little-endian n64
targets, unchanged in size for x86-64 and, unusually, marginally larger
for big-endian MIPS n64, as follows:

i686:
   text    data     bss     dec     hex filename
 152255    4052     192  156499   26353 ld-2.27.9000-base.so
 152159    4052     192  156403   262f3 ld-2.27.9000-elf-symbol-value.so
MIPS/o32/el:
   text    data     bss     dec     hex filename
 142906    4396     260  147562   2406a ld-2.27.9000-base.so
 142890    4396     260  147546   2405a ld-2.27.9000-elf-symbol-value.so
MIPS/n32/el:
   text    data     bss     dec     hex filename
 142267    4404     260  146931   23df3 ld-2.27.9000-base.so
 142171    4404     260  146835   23d93 ld-2.27.9000-elf-symbol-value.so
MIPS/n64/el:
   text    data     bss     dec     hex filename
 149835    7376     408  157619   267b3 ld-2.27.9000-base.so
 149787    7376     408  157571   26783 ld-2.27.9000-elf-symbol-value.so
MIPS/o32/eb:
   text    data     bss     dec     hex filename
 142870    4396     260  147526   24046 ld-2.27.9000-base.so
 142854    4396     260  147510   24036 ld-2.27.9000-elf-symbol-value.so
MIPS/n32/eb:
   text    data     bss     dec     hex filename
 142019    4404     260  146683   23cfb ld-2.27.9000-base.so
 141923    4404     260  146587   23c9b ld-2.27.9000-elf-symbol-value.so
MIPS/n64/eb:
   text    data     bss     dec     hex filename
 149763    7376     408  157547   2676b ld-2.27.9000-base.so
 149779    7376     408  157563   2677b ld-2.27.9000-elf-symbol-value.so
x86-64:
   text    data     bss     dec     hex filename
 148462    6452     400  155314   25eb2 ld-2.27.9000-base.so
 148462    6452     400  155314   25eb2 ld-2.27.9000-elf-symbol-value.so

	[BZ #19818]
	* sysdeps/generic/ldsodefs.h (LOOKUP_VALUE_ADDRESS): Add `set'
	parameter.
	(SYMBOL_ADDRESS): New macro.
	[!ELF_FUNCTION_PTR_IS_SPECIAL] (DL_SYMBOL_ADDRESS): Use
	SYMBOL_ADDRESS for symbol address calculation.
	* elf/dl-runtime.c (_dl_fixup): Likewise.
	(_dl_profile_fixup): Likewise.
	* elf/dl-symaddr.c (_dl_symbol_address): Likewise.
	* elf/rtld.c (dl_main): Likewise.
	* sysdeps/aarch64/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/alpha/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/arm/dl-machine.h (elf_machine_rel): Likewise.
	(elf_machine_rela): Likewise.
	* sysdeps/hppa/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/hppa/dl-symaddr.c (_dl_symbol_address): Likewise.
	* sysdeps/i386/dl-machine.h (elf_machine_rel): Likewise.
	(elf_machine_rela): Likewise.
	* sysdeps/ia64/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/m68k/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/microblaze/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/mips/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC):
	Likewise.
	(elf_machine_reloc): Likewise.
	(elf_machine_got_rel): Likewise.
	* sysdeps/mips/dl-trampoline.c (__dl_runtime_resolve): Likewise.
	* sysdeps/nios2/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/riscv/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/s390/s390-32/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/s390/s390-64/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/sh/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/tile/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2018-04-04 23:09:37 +01:00
Zack Weinberg
9185f86d8f Make sysdeps/generic/internal-signals.h less stubby.
Three of the functions defined by internal-signals.h were not actually
fulfilling their contracts when the sysdeps/generic version of that
file was used.  Also, the Linux version included several more headers
than the generic version, which is the root cause of a build failure
on Hurd (already addressed in another way, but I think it is proper to
make the headers match).

	* sysdeps/generic/internal-signals.h: Include signal.h,
	sigsetops.h, and stdbool.h.
	(__libc_signal_block_all): Actually block all signals.
	(__libc_signal_block_app): Likewise.
	(__libc_signal_restore_set): Actually restore the signal mask.
2018-04-04 12:37:23 -04:00