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Paul E. Murphy 4531ba8ebf powerpc64le: enforce non-specific long double in .gnu.attributes section
We turn off this feature to avoid polluting our shared libary with
a specific value.  However, static libgcc is not under our control,
and has enabled this for ibm128 routines.  This pollutes the
resulting shared libraries with it.

Attach a post-linking hook to replace this section with one crafted
as hard-float + indeterminate ldbl.  This allows IEEE ldbl users to
avoid having to disable the gnu attributes feature which should
protect them from linking ibm ldbl libraries using the gnu attributes
feature.

Currently, this only replaces libc and libm which support both ldbl
formats and rely on application code to explicitly determine which
is to be used.

Strictly speaking, the section could be deleted with minimal lost value.
However correctly set attributes could prove useful for some future change,
and similarly missing attributes.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
2020-04-06 10:23:58 -05:00
argp Prepare redirections for IEEE long double on powerpc64le 2020-02-17 15:28:29 -06:00
assert Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
benchtests Add benchtests for roundeven and roundevenf. 2020-03-27 23:24:02 +00:00
bits sysv: Define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 2020-04-02 09:21:05 -07:00
catgets Update copyright dates not handled by scripts/update-copyrights. 2020-01-01 00:21:22 +00:00
ChangeLog.old Generate ChangeLog.old/ChangeLog.20 for 2.31 2020-02-01 17:22:50 +05:30
conform Convert Python scripts to Python 3 2020-03-03 15:52:09 -08:00
crypt Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
csu csu: Use ELF constructor instead of _init in libc.so 2020-02-25 14:58:52 +01:00
ctype Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
debug mips: Fix bracktrace result for signal frames 2020-02-18 10:39:03 -03:00
dirent Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dlfcn Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
elf elf: Implement DT_AUDIT, DT_DEPAUDIT support [BZ #24943] 2020-04-03 16:26:10 +02:00
gmon Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
gnulib Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
grp Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
gshadow Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
hesiod nss_hesiod: Use NSS_DECLARE_MODULE_FUNCTIONS 2020-02-13 09:14:44 +01:00
htl htl: Link internal htl tests against libpthread 2020-02-17 00:36:53 +01:00
hurd hurd: Make O_TRUNC update mtime/ctime 2020-03-29 19:42:55 +02:00
iconv Update copyright dates not handled by scripts/update-copyrights. 2020-01-01 00:21:22 +00:00
iconvdata Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
include linux: Use long time_t for wait4/getrusage 2020-04-02 09:21:06 -07:00
inet Add IPPROTO_ETHERNET and IPPROTO_MPTCP from Linux 5.6 to netinet/in.h. 2020-04-03 18:08:28 +00:00
intl Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
io Linux: Work around kernel bugs in chmod on /proc/self/fd paths [BZ #14578] 2020-02-18 17:52:27 +01:00
libio <fd_to_filename.h>: Add type safety and port to Hurd 2020-02-18 13:42:29 +01:00
locale Fix locale/tst-locale-locpath cross-testing when sshd sets LANG. 2020-01-24 17:23:07 +00:00
localedata oc_FR locale: Fix spelling of Thursday (bug 25639) 2020-03-19 00:19:07 +01:00
login Update copyright dates not handled by scripts/update-copyrights. 2020-01-01 00:21:22 +00:00
mach Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
malloc Add tests for Safe-Linking 2020-04-03 07:20:56 -04:00
manual Extended Char Intro: Use getwc in example (Bug 25626) 2020-03-20 17:13:03 -04:00
math math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
mathvec Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
misc <fd_to_filename.h>: Add type safety and port to Hurd 2020-02-18 13:42:29 +01:00
nis nss_nis: Use NSS_DECLARE_MODULE_FUNCTIONS 2020-02-25 16:15:09 +01:00
nptl Linux: set_robust_list syscall number is always available 2020-03-03 12:49:44 +01:00
nptl_db Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
nscd nscd/cachedumper.c : fix whitespace 2020-03-17 14:03:43 -04:00
nss nss_files: Use NSS_DECLARE_MODULE_FUNCTIONS 2020-02-13 09:14:54 +01:00
po Update translations 2020-03-04 07:27:32 +05:30
posix posix: Refactor tst-waitid (BZ #14666) 2020-02-27 16:16:16 -03:00
pwd Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
resolv Move implementation of <file_change_detection.h> into a C file 2020-02-18 13:44:48 +01:00
resource Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
rt Block all signals on timer_create thread (BZ#10815) 2020-02-19 13:46:31 -03:00
scripts Use Linux 5.6 and GMP 6.2.0 in build-many-glibcs.py. 2020-03-31 00:22:22 +00:00
setjmp Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
shadow Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
signal Build raise with -fasynchronous-unwind-tables. 2020-01-24 17:23:47 +00:00
socket Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
soft-fp Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
stdio-common Fix tests which expose ldbl -> _Float128 redirects 2020-03-25 14:34:23 -05:00
stdlib stdlib: Move tst-system to tests-container 2020-03-25 09:50:45 -03:00
string Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
sunrpc sunrpc: Properly clean up if tst-udp-timeout fails 2020-02-12 16:25:34 -03:00
support support: Change xgetline to return 0 on EOF 2020-04-03 16:26:10 +02:00
sysdeps powerpc64le: enforce non-specific long double in .gnu.attributes section 2020-04-06 10:23:58 -05:00
sysvipc Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
termios Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
time alpha: Fix static gettimeofday symbol 2020-02-13 08:27:27 -03:00
timezone Update timezone/README 2020-01-09 23:00:25 -08:00
wcsmbs Prepare redirections for IEEE long double on powerpc64le 2020-02-17 15:28:29 -06:00
wctype Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
.gitattributes
.gitignore
abi-tags Remove the bulk of the NaCl port. 2017-05-20 08:09:10 -04:00
aclocal.m4 LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotes 2018-01-25 17:20:28 +01:00
config.h.in sparc: Assume GOTDATA support in the toolchain 2019-10-09 19:15:33 +02:00
config.make.in Make --bindir effective 2019-05-14 11:04:33 -03:00
configure Remove reference of --without-fp on configure 2020-03-06 09:53:24 -03:00
configure.ac Remove reference of --without-fp on configure 2020-03-06 09:53:24 -03:00
COPYING
COPYING.LIB
extra-lib.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
gen-locales.mk Improve gen-locales.mk and gen-locale.sh to make test files with @ options work 2018-02-27 17:01:57 +01:00
INSTALL Update newest tested versions of dependencies in install.texi 2020-02-01 17:16:54 +05:30
libc-abis libc-abis: Define ABSOLUTE ABI [BZ #19818][BZ #23307] 2018-07-05 18:06:43 +01:00
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
LICENSES Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Makeconfig: sandwich gnulib-tests between libc/ld linking of tests 2020-03-25 14:34:23 -05:00
Makefile Drop dependency of dist target on ChangeLog 2020-01-09 13:28:08 +05:30
Makefile.help Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
NEWS elf: Implement DT_AUDIT, DT_DEPAUDIT support [BZ #24943] 2020-04-03 16:26:10 +02:00
o-iterator.mk
README Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
Rules Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
shlib-versions Extend NSS test suite 2017-07-17 15:52:44 -04:00
test-skeleton.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
version.h Open master for 2.32 development 2020-02-01 17:22:50 +05:30

This directory contains the sources of the GNU C Library.
See the file "version.h" for what release version you have.

The GNU C Library is the standard system C library for all GNU systems,
and is an important part of what makes up a GNU system.  It provides the
system API for all programs written in C and C-compatible languages such
as C++ and Objective C; the runtime facilities of other programming
languages use the C library to access the underlying operating system.

In GNU/Linux systems, the C library works with the Linux kernel to
implement the operating system behavior seen by user applications.
In GNU/Hurd systems, it works with a microkernel and Hurd servers.

The GNU C Library implements much of the POSIX.1 functionality in the
GNU/Hurd system, using configurations i[4567]86-*-gnu.

When working with Linux kernels, this version of the GNU C Library
requires Linux kernel version 3.2 or later.

Also note that the shared version of the libgcc_s library must be
installed for the pthread library to work correctly.

The GNU C Library supports these configurations for using Linux kernels:

	aarch64*-*-linux-gnu
	alpha*-*-linux-gnu
	arm-*-linux-gnueabi
	csky-*-linux-gnuabiv2
	hppa-*-linux-gnu
	i[4567]86-*-linux-gnu
	x86_64-*-linux-gnu	Can build either x86_64 or x32
	ia64-*-linux-gnu
	m68k-*-linux-gnu
	microblaze*-*-linux-gnu
	mips-*-linux-gnu
	mips64-*-linux-gnu
	powerpc-*-linux-gnu	Hardware or software floating point, BE only.
	powerpc64*-*-linux-gnu	Big-endian and little-endian.
	s390-*-linux-gnu
	s390x-*-linux-gnu
	riscv64-*-linux-gnu
	sh[34]-*-linux-gnu
	sparc*-*-linux-gnu
	sparc64*-*-linux-gnu

If you are interested in doing a port, please contact the glibc
maintainers; see https://www.gnu.org/software/libc/ for more
information.

See the file INSTALL to find out how to configure, build, and install
the GNU C Library.  You might also consider reading the WWW pages for
the C library at https://www.gnu.org/software/libc/.

The GNU C Library is (almost) completely documented by the Texinfo manual
found in the `manual/' subdirectory.  The manual is still being updated
and contains some known errors and omissions; we regret that we do not
have the resources to work on the manual as much as we would like.  For
corrections to the manual, please file a bug in the `manual' component,
following the bug-reporting instructions below.  Please be sure to check
the manual in the current development sources to see if your problem has
already been corrected.

Please see https://www.gnu.org/software/libc/bugs.html for bug reporting
information.  We are now using the Bugzilla system to track all bug reports.
This web page gives detailed information on how to report bugs properly.

The GNU C Library is free software.  See the file COPYING.LIB for copying
conditions, and LICENSES for notices about a few contributions that require
these additional notices to be distributed.  License copyright years may be
listed using range notation, e.g., 1996-2015, indicating that every year in
the range, inclusive, is a copyrightable year that would otherwise be listed
individually.