Joseph Myers c86ed71d63 Add float128 support for x86_64, x86. ...

This patch enables float128 support for x86_64 and x86.  All GCC
versions that can build glibc provide the required support, but since
GCC 6 and before don't provide __builtin_nanq / __builtin_nansq, sNaN
tests and some tests of NaN payloads need to be disabled with such
compilers (this does not affect the generated glibc binaries at all,
just the tests).  bits/floatn.h declares float128 support to be
available for GCC versions that provide the required libgcc support
(4.3 for x86_64, 4.4 for i386 GNU/Linux, 4.5 for i386 GNU/Hurd);
compilation-only support was present some time before then, but not
really useful without the libgcc functions.

fenv_private.h needed updating to avoid trying to put _Float128 values
in registers.  I make no assertion of optimality of the
math_opt_barrier / math_force_eval definitions for this case; they are
simply intended to be sufficient to work correctly.

Tested for x86_64 and x86, with GCC 7 and GCC 6.  (Testing for x32 was
compilation tests only with build-many-glibcs.py to verify the ABI
baseline updates.  I have not done any testing for Hurd, although the
float128 support is enabled there as for GNU/Linux.)

	* sysdeps/i386/Implies: Add ieee754/float128.
	* sysdeps/x86_64/Implies: Likewise.
	* sysdeps/x86/bits/floatn.h: New file.
	* sysdeps/x86/float128-abi.h: Likewise.
	* manual/math.texi (Mathematics): Document support for _Float128
	on x86_64 and x86.
	* sysdeps/i386/fpu/fenv_private.h: Include <bits/floatn.h>.
	(math_opt_barrier): Do not put _Float128 values in floating-point
	registers.
	(math_force_eval): Likewise.
	[__x86_64__] (SET_RESTORE_ROUNDF128): New macro.
	* sysdeps/x86/fpu/Makefile [$(subdir) = math] (CPPFLAGS): Append
	to Makefile variable.
	* sysdeps/x86/fpu/e_sqrtf128.c: New file.
	* sysdeps/x86/fpu/sfp-machine.h: Likewise.  Based on libgcc.
	* sysdeps/x86/math-tests.h: New file.
	* math/libm-test-support.h (XFAIL_FLOAT128_PAYLOAD): New macro.
	* math/libm-test-getpayload.inc (getpayload_test_data): Use
	XFAIL_FLOAT128_PAYLOAD.
	* math/libm-test-setpayload.inc (setpayload_test_data): Likewise.
	* math/libm-test-totalorder.inc (totalorder_test_data): Likewise.
	* math/libm-test-totalordermag.inc (totalordermag_test_data):
	Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.

2017-06-26 22:02:24 +00:00

..

aarch64

Call exit directly in clone (BZ #21512)

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alpha

Call exit directly in clone (BZ #21512)

2017-06-26 17:52:20 -03:00

arm

Call exit directly in clone (BZ #21512)

2017-06-26 17:52:20 -03:00

bits

Factor out shared definitions from bits/signum.h.

2017-06-20 20:32:50 -04:00

generic

posix: Consolidate Linux pause syscall

2017-05-18 18:06:47 -03:00

hppa

Call exit directly in clone (BZ #21512)

2017-06-26 17:52:20 -03:00

i386

Add float128 support for x86_64, x86.

2017-06-26 22:02:24 +00:00

ia64

Call exit directly in clone (BZ #21512)

2017-06-26 17:52:20 -03:00

include

Add shim header for bits/syscall.h.

2017-06-01 10:56:10 -04:00

m68k

Call exit directly in clone (BZ #21512)

2017-06-26 17:52:20 -03:00

microblaze

Avoid tickling a linker bug from microblaze pt-vfork.S.

2017-06-01 08:53:56 -04:00

mips

Call exit directly in clone (BZ #21512)

2017-06-26 17:52:20 -03:00

net

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netash

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netatalk

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netax25

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neteconet

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netinet

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netpacket

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netrose

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nfs

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nios2

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2017-06-26 17:52:20 -03:00

powerpc

Call exit directly in clone (BZ #21512)

2017-06-26 17:52:20 -03:00

s390

S390: Sync ptrace.h with kernel. [BZ #21539]

2017-06-19 16:27:25 +02:00

scsi

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2017-01-01 00:14:16 +00:00

sh

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2017-06-26 17:52:20 -03:00

sparc

Call exit directly in clone (BZ #21512)

2017-06-26 17:52:20 -03:00

sys

Fix struct sigaltstack namespace (bug 21517).

2017-06-05 10:17:46 +00:00

tile

Call exit directly in clone (BZ #21512)

2017-06-26 17:52:20 -03:00

wordsize-64

Consolidate Linux openat implementation

2017-06-20 18:20:06 -03:00

x86

tunables: Add IFUNC selection and cache sizes

2017-06-20 08:37:28 -07:00

x86_64

Add float128 support for x86_64, x86.

2017-06-26 22:02:24 +00:00

_exit.c

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_G_config.h

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2017-06-08 13:58:17 -04:00

a.out.h

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accept4.c

Simplify accept4, recvmmsg, sendmmsg code.

2017-05-09 21:59:36 +00:00

accept.c

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2017-03-09 15:22:06 +01:00

access.c

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adjtime.c

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arch-fork.h

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bind.c

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check_native.c

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check_pf.c

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clock_getres.c

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clock_nanosleep.c

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clock_settime.c

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clock.c

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close.c

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cmsg_nxthdr.c

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configure

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configure.ac

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connect.c

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creat64.c

Consolidate Linux creat implementation

2017-05-11 17:27:27 -03:00

creat.c

Consolidate Linux creat implementation

2017-05-11 17:27:27 -03:00

createthread.c

Bug 20116: Fix use after free in pthread_create()

2017-01-28 19:21:44 -05:00

default-sched.h

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device-nrs.h

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dl-brk.c

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dl-fxstatat64.c

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dl-getcwd.c

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dl-librecon.h

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2017-06-08 12:52:42 -07:00

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dl-opendir.c

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epoll_pwait.c

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epoll_wait.c

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2017-05-03 10:36:43 -03:00

errqueue.h

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eventfd_read.c

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eventfd_write.c

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exit-thread.h

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faccessat.c

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fallocate64.c

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fallocate.c

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fatal-prepare.h

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fchmodat.c

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fcntl.c

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fd_to_filename.h

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fdatasync.c

posix: Consolidate Linux fdatasync syscall

2017-05-18 18:06:47 -03:00

fexecve.c

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fips-private.h

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fpathconf.c

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fstatfs64.c

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fstatvfs64.c

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fstatvfs.c

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fsync.c

posix: Consolidate Linux fsync syscall

2017-05-18 18:06:47 -03:00

ftime.c

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ftruncate64.c

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ftruncate.c

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futex-internal.h

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futimens.c

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futimes.c

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futimesat.c

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fxstat64.c

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fxstat.c

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fxstatat64.c

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fxstatat.c

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gai_sigqueue.c

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getclktck.c

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getcwd.c

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getdents64.c

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getdents.c

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getdirentries64.c

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getdirentries.c

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getdtsz.c

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getentropy.c

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gethostid.c

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getipv4sourcefilter.c

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getloadavg.c

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getlogin_r.c

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getlogin.c

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getpagesize.c

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getpeername.c

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getpriority.c

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getpt.c

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getrandom.c

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getrlimit64.c

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2017-05-09 14:05:09 +00:00

getrlimit.c

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getsockname.c

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getsockopt.c

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getsourcefilter.c

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getsysstats.c

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gettimeofday.c

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grantpt.c

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if_index.c

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2017-01-01 00:14:16 +00:00

ifaddrs.c

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2017-04-19 07:45:04 +02:00

ifreq.c

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2017-01-01 00:14:16 +00:00

Implies

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internal_statvfs64.c

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internal_statvfs.c

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2017-05-12 11:48:37 +00:00

ipc_ops.h

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ipc_priv.h

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kernel_sigaction.h

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kernel_stat.h

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2016-11-22 09:59:12 -08:00

kernel_termios.h

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2017-01-01 00:14:16 +00:00

kernel-features.h

posix: Implement preadv2 and pwritev2

2017-05-31 17:35:46 -03:00

kernel-posix-cpu-timers.h

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kernel-posix-timers.h

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ldd-rewrite.sed

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lddlibc4.c

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ldsodefs.h

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libc_fatal.c

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linux_fsinfo.h

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listen.c

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local-setxid.h

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lowlevellock-futex.h

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lseek64.c

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lseek.c

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lutimes.c

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lxstat.c

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Makefile

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2017-06-26 17:52:20 -03:00

malloc-sysdep.h

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mmap64.c

Clean pthread functions namespaces for C11 threads

2017-06-23 17:38:17 -03:00

mmap_internal.h

Consolidate Linux mmap implementation (BZ#21270)

2017-04-12 11:04:28 -03:00

mmap.c

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2017-06-23 17:38:17 -03:00

mq_close.c

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mq_getattr.c

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mq_timedreceive.c

posix: Consolidate Linux mq_timedreceive syscall

2017-05-18 18:06:47 -03:00

mq_timedsend.c

posix: Consolidate Linux mq_timedsend syscall

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mq_unlink.c

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msgctl.c

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msgrcv.c

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msgsnd.c

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msync.c

posix: Consolidate Linux msync syscall

2017-05-18 18:06:47 -03:00

nanosleep.c

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2017-06-23 17:38:17 -03:00

netlink_assert_response.c

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netlinkaccess.h

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nice.c

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not-cancel.h

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nptl-signals.h

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ntp_gettime.c

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open64.c

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2017-05-11 15:49:10 -03:00

open_by_handle_at.c

linux: Consolidate Linux open_by_handle_at syscall

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open.c

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openat64.c

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openat.c

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opendir.c

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paths.h

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pause.c

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2017-05-18 18:06:47 -03:00

personality.c

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poll.c

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ppoll.c

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2017-01-01 00:14:16 +00:00

pread64.c

posix: Fix internal p{read,write} plt usage

2017-05-02 14:57:40 -03:00

pread.c

posix: Fix internal p{read,write} plt usage

2017-05-02 14:57:40 -03:00

preadv2.c

posix: Implement preadv2 and pwritev2

2017-05-31 17:35:46 -03:00

preadv64.c

posix: Implement preadv2 and pwritev2

2017-05-31 17:35:46 -03:00

preadv64v2.c

posix: Implement preadv2 and pwritev2

2017-05-31 17:35:46 -03:00

preadv.c

posix: Implement preadv2 and pwritev2

2017-05-31 17:35:46 -03:00

prlimit.c

Assume prlimit64 is available.

2017-05-09 14:05:09 +00:00

prof-freq.c

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2017-01-01 00:14:16 +00:00

profil.c

…

pselect.c

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2017-01-01 00:14:16 +00:00

pt-raise.c

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2017-01-01 00:14:16 +00:00

pthread_getaffinity.c

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2017-01-01 00:14:16 +00:00

pthread_getcpuclockid.c

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2017-01-01 00:14:16 +00:00

pthread_getname.c

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2017-01-01 00:14:16 +00:00

pthread_kill.c

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2017-01-01 00:14:16 +00:00

pthread_setaffinity.c

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2017-01-01 00:14:16 +00:00

pthread_setname.c

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2017-01-01 00:14:16 +00:00

pthread_sigmask.c

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2017-01-01 00:14:16 +00:00

pthread_sigqueue.c

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2017-01-01 00:14:16 +00:00

pthread-pids.h

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2017-01-01 00:14:16 +00:00

ptrace.c

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2017-01-01 00:14:16 +00:00

ptsname.c

Remove check for NULL buffer passed to `ptsname_r'

2017-06-07 17:37:59 +02:00

pwrite64.c

posix: Implement preadv2 and pwritev2

2017-05-31 17:35:46 -03:00

pwrite.c

posix: Fix internal p{read,write} plt usage

2017-05-02 14:57:40 -03:00

pwritev2.c

posix: Implement preadv2 and pwritev2

2017-05-31 17:35:46 -03:00

pwritev64.c

posix: Implement preadv2 and pwritev2

2017-05-31 17:35:46 -03:00

pwritev64v2.c

posix: Implement preadv2 and pwritev2

2017-05-31 17:35:46 -03:00

pwritev.c

posix: Implement preadv2 and pwritev2

2017-05-31 17:35:46 -03:00

raise.c

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2017-01-01 00:14:16 +00:00

read.c

Consolidate Linux read syscall

2017-05-11 17:27:30 -03:00

readahead.c

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2017-01-01 00:14:16 +00:00

readdir64_r.c

…

readdir64.c

…

readonly-area.c

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2017-01-01 00:14:16 +00:00

readv.c

Consolidate Linux readv implementation

2017-05-11 17:27:31 -03:00

reboot.c

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2017-01-01 00:14:16 +00:00

recv.c

Consolidate Linux recv implementation

2017-03-09 15:22:06 +01:00

recvfrom.c

Consolidate Linux recvfrom implementation

2017-03-09 15:22:06 +01:00

recvmmsg.c

Simplify accept4, recvmmsg, sendmmsg code.

2017-05-09 21:59:36 +00:00

recvmsg.c

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2017-01-01 00:14:16 +00:00

remove.c

…

rename.c

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2017-01-01 00:14:16 +00:00

renameat.c

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2017-01-01 00:14:16 +00:00

sa_len.c

…

safe-fatal.h

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2017-01-01 00:14:16 +00:00

sched_getaffinity.c

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2017-01-01 00:14:16 +00:00

sched_getcpu.c

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2017-01-01 00:14:16 +00:00

sched_setaffinity.c

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2017-01-01 00:14:16 +00:00

segfault.c

…

select.c

Consolidate Linux select implementation

2017-05-03 10:36:36 -03:00

semctl.c

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2017-01-01 00:14:16 +00:00

semget.c

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2017-01-01 00:14:16 +00:00

semop.c

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2017-01-01 00:14:16 +00:00

semtimedop.c

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2017-01-01 00:14:16 +00:00

send.c

Consolidate Linux send implementation

2017-03-09 15:22:06 +01:00

sendmmsg.c

Simplify accept4, recvmmsg, sendmmsg code.

2017-05-09 21:59:36 +00:00

sendmsg.c

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2017-01-01 00:14:16 +00:00

sendto.c

Consolidate Linux sendto implementation

2017-03-09 15:22:06 +01:00

setegid.c

Consolidate set* Linux implementation

2017-03-28 12:29:27 -03:00

seteuid.c

Consolidate set* Linux implementation

2017-03-28 12:29:27 -03:00

setgid.c

Consolidate set* Linux implementation

2017-03-28 12:29:27 -03:00

setgroups.c

Consolidate set* Linux implementation

2017-03-28 12:29:27 -03:00

sethostid.c

…

setipv4sourcefilter.c

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2017-01-01 00:14:16 +00:00

setregid.c

Consolidate set* Linux implementation

2017-03-28 12:29:27 -03:00

setresgid.c

Consolidate set* Linux implementation

2017-03-28 12:29:27 -03:00

setresuid.c

Consolidate set* Linux implementation

2017-03-28 12:29:27 -03:00

setreuid.c

Consolidate set* Linux implementation

2017-03-28 12:29:27 -03:00

setrlimit64.c

Assume prlimit64 is available.

2017-05-09 14:05:09 +00:00

setrlimit.c

Assume prlimit64 is available.

2017-05-09 14:05:09 +00:00

setsockopt.c

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2017-01-01 00:14:16 +00:00

setsourcefilter.c

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2017-01-01 00:14:16 +00:00

setuid.c

Consolidate set* Linux implementation

2017-03-28 12:29:27 -03:00

shlib-versions

…

shm-directory.c

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2017-01-01 00:14:16 +00:00

shmat.c

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2017-01-01 00:14:16 +00:00

shmctl.c

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2017-01-01 00:14:16 +00:00

shmdt.c

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2017-01-01 00:14:16 +00:00

shmget.c

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2017-01-01 00:14:16 +00:00

shutdown.c

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2017-01-01 00:14:16 +00:00

sigaction.c

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2017-01-01 00:14:16 +00:00

siglist.h

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2017-01-01 00:14:16 +00:00

signal.c

…

signalfd.c

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2017-01-01 00:14:16 +00:00

sigpending.c

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2017-01-01 00:14:16 +00:00

sigprocmask.c

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2017-01-01 00:14:16 +00:00

sigqueue.c

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2017-01-01 00:14:16 +00:00

sigreturn.c

…

sigset-cvt-mask.h

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2017-01-01 00:14:16 +00:00

sigsetops.h

Remove __need macros from signal.h.

2017-05-20 19:04:43 -04:00

sigstack.c

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2017-01-01 00:14:16 +00:00

sigsuspend.c

posix: Consolidate Linux sigsuspend implementation

2017-05-18 18:06:47 -03:00

sigtimedwait.c

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2017-01-01 00:14:16 +00:00

sigwait.c

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2017-01-01 00:14:16 +00:00

sigwaitinfo.c

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2017-01-01 00:14:16 +00:00

sizes.h

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2017-01-01 00:14:16 +00:00

socket.c

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2017-01-01 00:14:16 +00:00

socketcall.h

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2017-01-01 00:14:16 +00:00

socketpair.c

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2017-01-01 00:14:16 +00:00

spawni.c

posix: Remove ununsed posix_spawn internal assignment

2017-04-25 08:51:21 -03:00

speed.c

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2017-01-01 00:14:16 +00:00

splice.c

linux: Consolidate Linux splice syscall

2017-05-18 18:06:47 -03:00

statfs64.c

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2017-01-01 00:14:16 +00:00

statvfs64.c

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2017-01-01 00:14:16 +00:00

statvfs.c

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2017-01-01 00:14:16 +00:00

sync_file_range.c

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2017-01-01 00:14:16 +00:00

syscalls.list

posix: Consolidate Linux mq_timedsend syscall

2017-05-18 18:06:47 -03:00

sysconf.c

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2017-01-01 00:14:16 +00:00

sysctl.c

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2017-01-01 00:14:16 +00:00

sysctl.mk

…

sysdep-vdso.h

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2017-01-01 00:14:16 +00:00

sysdep.h

Consolidate Linux send implementation

2017-03-09 15:22:06 +01:00

syslog.c

…

system.c

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2017-01-01 00:14:16 +00:00

tcdrain.c

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2017-01-01 00:14:16 +00:00

tcflow.c

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2017-01-01 00:14:16 +00:00

tcflush.c

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2017-01-01 00:14:16 +00:00

tcgetattr.c

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2017-01-01 00:14:16 +00:00

tcgetpgrp.c

…

tcsendbrk.c

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2017-01-01 00:14:16 +00:00

tcsetattr.c

Clean pthread functions namespaces for C11 threads

2017-06-23 17:38:17 -03:00

tcsetpgrp.c

…

tee.c

linux: Consolidate Linux tee implementation

2017-05-18 18:06:47 -03:00

termio.h

…

test-errno-linux.c

Fix more test-errno issues

2017-03-30 18:23:43 -03:00

time.c

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2017-01-01 00:14:16 +00:00

timer_create.c

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2017-01-01 00:14:16 +00:00

timer_delete.c

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2017-01-01 00:14:16 +00:00

timer_getoverr.c

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2017-01-01 00:14:16 +00:00

timer_gettime.c

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2017-01-01 00:14:16 +00:00

timer_routines.c

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2017-01-01 00:14:16 +00:00

timer_settime.c

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2017-01-01 00:14:16 +00:00

times.c

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2017-01-01 00:14:16 +00:00

timespec_get.c

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2017-01-01 00:14:16 +00:00

truncate64.c

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2017-01-01 00:14:16 +00:00

truncate.c

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2017-01-01 00:14:16 +00:00

tst-affinity-pid.c

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2017-01-01 00:14:16 +00:00

tst-affinity.c

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2017-01-01 00:14:16 +00:00

tst-align-clone.c

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2017-01-01 00:14:16 +00:00

tst-clone2.c

Use test-driver in sysdeps/unix/sysv/linux/tst-clone2.c

2017-06-07 14:05:42 +02:00

tst-clone3.c

Call exit directly in clone (BZ #21512)

2017-06-26 17:52:20 -03:00

tst-clone.c

Miscellaneous low-risk changes preparing for _ISOMAC testsuite.

2017-03-01 20:32:50 -05:00

tst-fallocate64.c

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2017-01-01 00:14:16 +00:00

tst-fallocate-common.c

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2017-01-01 00:14:16 +00:00

tst-fallocate.c

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2017-01-01 00:14:16 +00:00

tst-fanotify.c

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2017-01-01 00:14:16 +00:00

tst-getpid1.c

…

tst-personality.c

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2017-01-01 00:14:16 +00:00

tst-quota.c

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2017-01-01 00:14:16 +00:00

tst-setgetname.c

Remove __ASSUME_PROC_PID_TASK_COMM.

2017-05-08 16:44:54 +00:00

tst-signal-numbers.sh

Factor out shared definitions from bits/signum.h.

2017-06-20 20:32:50 -04:00

tst-skeleton-affinity.c

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2017-01-01 00:14:16 +00:00

tst-skeleton-thread-affinity.c

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2017-01-01 00:14:16 +00:00

tst-sync_file_range.c

Add missing header files throughout the testsuite.

2017-02-16 17:33:18 -05:00

tst-thread-affinity-pthread2.c

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2017-01-01 00:14:16 +00:00

tst-thread-affinity-pthread.c

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2017-01-01 00:14:16 +00:00

tst-thread-affinity-sched.c

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2017-01-01 00:14:16 +00:00

ttyname_r.c

linux ttyname and ttyname_r: do not return wrong results

2017-03-19 17:36:13 +00:00

ttyname.c

linux ttyname and ttyname_r: do not return wrong results

2017-03-19 17:36:13 +00:00

ttyname.h

linux ttyname and ttyname_r: do not return wrong results

2017-03-19 17:36:13 +00:00

ualarm.c

…

umount2.S

…

umount.S

…

unlockpt.c

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2017-01-01 00:14:16 +00:00

updwtmp.c

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2017-01-01 00:14:16 +00:00

ustat.c

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2017-01-01 00:14:16 +00:00

utimensat.c

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2017-01-01 00:14:16 +00:00

utimes.c

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2017-01-01 00:14:16 +00:00

utmp_file.c

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2017-01-01 00:14:16 +00:00

Versions

…

vfork.c

…

vmsplice.c

linux: Consolidate Linux vmsplice syscall

2017-05-18 18:06:47 -03:00

wait3.c

…

wait.c

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2017-01-01 00:14:16 +00:00

waitid.c

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2017-01-01 00:14:16 +00:00

waitpid.c

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2017-01-01 00:14:16 +00:00

write.c

Consolidate Linux write syscall

2017-05-11 17:27:30 -03:00

writev.c

Consolidate Linux writev implementation

2017-05-11 17:27:31 -03:00

xmknod.c

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2017-01-01 00:14:16 +00:00

xmknodat.c

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2017-01-01 00:14:16 +00:00

xstat64.c

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2017-01-01 00:14:16 +00:00

xstat.c

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2017-01-01 00:14:16 +00:00

xstatconv.c

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2017-01-01 00:14:16 +00:00

xstatconv.h

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2017-01-01 00:14:16 +00:00