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On powerpc, atomic_exchange_and_add is implemented without any
barriers. This patchs adds the missing instruction and memory barrier
for acquire and release semanthics.
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This patch modifies several test cases to use test-skeleton.c.
It was generated by a bash script written for this purpose and
thus excludes several other tests which I deemed worth a visual
inspection before making the change.
I intend to follow up with individual patches to the tests
skipped by the script.
The script itself resides at http://git.io/WODAmg and should
reproduce this very patch when run against master.
ChangeLog:
2014-10-30 Arjun Shankar <arjun.is@lostca.se>
* catgets/test-gencat.c: Use test-skeleton.c.
* catgets/tst-catgets.c: Likewise.
* csu/tst-empty.c: Likewise.
* elf/tst-audit2.c: Likewise.
* elf/tst-global1.c: Likewise.
* elf/tst-pathopt.c: Likewise.
* elf/tst-piemod1.c: Likewise.
* elf/tst-tls10.c: Likewise.
* elf/tst-tls11.c: Likewise.
* elf/tst-tls12.c: Likewise.
* gnulib/tst-gcc.c: Likewise.
* iconvdata/tst-e2big.c: Likewise.
* iconvdata/tst-loading.c: Likewise.
* iconv/tst-iconv1.c: Likewise.
* iconv/tst-iconv2.c: Likewise.
* inet/test-inet6_opt.c: Likewise.
* inet/tst-gethnm.c: Likewise.
* inet/tst-network.c: Likewise.
* inet/tst-ntoa.c: Likewise.
* intl/tst-codeset.c: Likewise.
* intl/tst-gettext2.c: Likewise.
* intl/tst-gettext3.c: Likewise.
* intl/tst-ngettext.c: Likewise.
* intl/tst-translit.c: Likewise.
* io/test-stat.c: Likewise.
* libio/test-fmemopen.c: Likewise.
* libio/tst-freopen.c: Likewise.
* libio/tst-sscanf.c: Likewise.
* libio/tst-ungetwc1.c: Likewise.
* libio/tst-ungetwc2.c: Likewise.
* libio/tst-widetext.c: Likewise.
* localedata/tst-ctype.c: Likewise.
* localedata/tst-digits.c: Likewise.
* localedata/tst-leaks.c: Likewise.
* localedata/tst-mbswcs1.c: Likewise.
* localedata/tst-mbswcs2.c: Likewise.
* localedata/tst-mbswcs3.c: Likewise.
* localedata/tst-mbswcs4.c: Likewise.
* localedata/tst-mbswcs5.c: Likewise.
* localedata/tst-setlocale.c: Likewise.
* localedata/tst-trans.c: Likewise.
* localedata/tst-wctype.c: Likewise.
* localedata/tst-xlocale1.c: Likewise.
* login/tst-grantpt.c: Likewise.
* malloc/tst-calloc.c: Likewise.
* malloc/tst-malloc.c: Likewise.
* malloc/tst-mallocstate.c: Likewise.
* malloc/tst-mcheck.c: Likewise.
* malloc/tst-mtrace.c: Likewise.
* malloc/tst-obstack.c: Likewise.
* math/atest-exp2.c: Likewise.
* math/atest-exp.c: Likewise.
* math/atest-sincos.c: Likewise.
* math/test-matherr.c: Likewise.
* math/test-misc.c: Likewise.
* math/test-powl.c: Likewise.
* math/tst-definitions.c: Likewise.
* misc/tst-dirname.c: Likewise.
* misc/tst-efgcvt.c: Likewise.
* misc/tst-fdset.c: Likewise.
* misc/tst-hsearch.c: Likewise.
* misc/tst-mntent2.c: Likewise.
* nptl/tst-sem7.c: Likewise.
* nptl/tst-sem8.c: Likewise.
* nptl/tst-sem9.c: Likewise.
* nss/test-netdb.c: Likewise.
* posix/tst-fnmatch.c: Likewise.
* posix/tst-getlogin.c: Likewise.
* posix/tst-gnuglob.c: Likewise.
* posix/tst-mmap.c: Likewise.
* pwd/tst-getpw.c: Likewise.
* resolv/tst-inet_ntop.c: Likewise.
* rt/tst-timer.c: Likewise.
* stdio-common/test-fseek.c: Likewise.
* stdio-common/test-popen.c: Likewise.
* stdio-common/test-vfprintf.c: Likewise.
* stdio-common/tst-cookie.c: Likewise.
* stdio-common/tst-fileno.c: Likewise.
* stdio-common/tst-gets.c: Likewise.
* stdio-common/tst-obprintf.c: Likewise.
* stdio-common/tst-perror.c: Likewise.
* stdio-common/tst-sprintf2.c: Likewise.
* stdio-common/tst-sprintf3.c: Likewise.
* stdio-common/tst-sprintf.c: Likewise.
* stdio-common/tst-swprintf.c: Likewise.
* stdio-common/tst-tmpnam.c: Likewise.
* stdio-common/tst-unbputc.c: Likewise.
* stdio-common/tst-wc-printf.c: Likewise.
* stdlib/tst-environ.c: Likewise.
* stdlib/tst-fmtmsg.c: Likewise.
* stdlib/tst-limits.c: Likewise.
* stdlib/tst-rand48-2.c: Likewise.
* stdlib/tst-rand48.c: Likewise.
* stdlib/tst-random2.c: Likewise.
* stdlib/tst-random.c: Likewise.
* stdlib/tst-strtol.c: Likewise.
* stdlib/tst-strtoll.c: Likewise.
* stdlib/tst-tls-atexit.c: Likewise.
* stdlib/tst-xpg-basename.c: Likewise.
* string/test-ffs.c: Likewise.
* string/tst-bswap.c: Likewise.
* string/tst-inlcall.c: Likewise.
* string/tst-strtok.c: Likewise.
* string/tst-strxfrm.c: Likewise.
* sysdeps/x86_64/tst-audit10.c: Likewise.
* sysdeps/x86_64/tst-audit3.c: Likewise.
* sysdeps/x86_64/tst-audit4.c: Likewise.
* sysdeps/x86_64/tst-audit5.c: Likewise.
* time/tst-ftime_l.c: Likewise.
* time/tst-getdate.c: Likewise.
* time/tst-mktime3.c: Likewise.
* time/tst-mktime.c: Likewise.
* time/tst-posixtz.c: Likewise.
* time/tst-strptime2.c: Likewise.
* time/tst-strptime3.c: Likewise.
* wcsmbs/tst-btowc.c: Likewise.
* wcsmbs/tst-mbrtowc.c: Likewise.
* wcsmbs/tst-mbsrtowcs.c: Likewise.
* wcsmbs/tst-wchar-h.c: Likewise.
* wcsmbs/tst-wcpncpy.c: Likewise.
* wcsmbs/tst-wcrtomb.c: Likewise.
* wcsmbs/tst-wcsnlen.c: Likewise.
* wcsmbs/tst-wcstof.c: Likewise.
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This patch removes the --enable-oldest-abi configure option, which has
long been bitrotten (as reported in bug 6652). The principle of
removing this option was agreed in the thread starting at
<https://sourceware.org/ml/libc-alpha/2013-07/msg00174.html>.
Tested for x86_64 and x86 that the installed shared libraries other
than libc.so are unchanged by this patch and that libc.so disassembly
and symbol versions are unchanged (debug info changes because of
changed line numbers in csu/version.c).
[BZ #6652]
* Makeconfig (soversions-default-setname): Remove variable.
($(common-objpfx)soversions.i): Don't pass default_setname to
soversions.awk.
* Makerules ($(common-objpfx)abi-versions.h): Don't pass
oldest_abi to abi-versions.awk.
* config.h.in (GLIBC_OLDEST_ABI): Remove macro undefine.
* config.make.in (oldest-abi): Remove variable.
* configure.ac (--enable-oldest-abi): Remove configure option.
* configure: Regenerated.
* csu/version.c (banner) [GLIBC_OLDEST_ABI]: Remove conditional
text.
* scripts/abi-versions.awk: Do not handle oldest_abi variable.
* scripts/soversions.awk: Do not handle default_setname variable.
* sysdeps/mach/hurd/configure.ac: Do not handle oldest_abi
variable.
* sysdeps/mach/hurd/configure: Regenerated.
* sysdeps/unix/sysv/linux/configure.ac: Do not handle oldest_abi
variable.
* sysdeps/unix/sysv/linux/configure: Regenerated.
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We initialize _r_debug for static binaries to allows debug
agents to treat static binaries a little more like dyanmic
ones. This simplifies the work a debug agent has to do to
access TLS in a static binary via libthread_db.
Tested on x86_64.
See:
https://sourceware.org/ml/libc-alpha/2014-04/msg00183.html
[BZ #16831]
* csu/libc-start.c (LIBC_START_MAIN) [!SHARED]: Call
_dl_debug_initialize.
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In <https://sourceware.org/ml/libc-alpha/2014-01/msg00196.html> I
noted it was necessary to add includes of Makeconfig early in various
subdirectory makefiles for the tests-special variable settings added
by that patch to be conditional on configuration information. No-one
commented on the general question there of whether Makeconfig should
always be included immediately after the definition of subdir.
This patch implements that early inclusion of Makeconfig in each
directory (which is a lot easier than consistent placement of includes
of Rules). Includes are added if needed, or moved up if already
present. Subdirectory "all:" targets are removed, since Makeconfig
provides one.
There is potential for further cleanups I haven't done. Rules and
Makerules have code such as
ifneq "$(findstring env,$(origin headers))" ""
headers :=
endif
to override to empty any value of various variables that came from the
environment. I think there is a case for Makeconfig setting all the
subdirectory variables (other than subdir) to empty to ensure no
outside value is going to take effect if a subdirectory fails to
define a variable. (A list of such variables, possibly out of date
and incomplete, is in manual/maint.texi.) Rules and Makerules would
give errors if Makeconfig hadn't already been included, instead of
including it themselves. The special code to override values coming
from the environment would then be obsolete and could be removed.
Tested x86_64, including that installed binaries are identical before
and after the patch.
* argp/Makefile: Include Makeconfig immediately after defining
subdir.
* assert/Makefile: Likewise.
* benchtests/Makefile: Likewise.
* catgets/Makefile: Likewise.
* conform/Makefile: Likewise.
* crypt/Makefile: Likewise.
* csu/Makefile: Likewise.
(all): Remove target.
* ctype/Makefile: Include Makeconfig immediately after defining
subdir.
* debug/Makefile: Likewise.
* dirent/Makefile: Likewise.
* dlfcn/Makefile: Likewise.
* gmon/Makefile: Likewise.
* gnulib/Makefile: Likewise.
* grp/Makefile: Likewise.
* gshadow/Makefile: Likewise.
* hesiod/Makefile: Likewise.
* hurd/Makefile: Likewise.
(all): Remove target.
* iconvdata/Makefile: Include Makeconfig immediately after
defining subdir.
* inet/Makefile: Likewise.
* intl/Makefile: Likewise.
* io/Makefile: Likewise.
* libio/Makefile: Likewise.
(all): Remove target.
* locale/Makefile: Include Makeconfig immediately after defining
subdir.
* login/Makefile: Likewise.
* mach/Makefile: Likewise.
(all): Remove target.
* malloc/Makefile: Include Makeconfig immediately after defining
subdir.
(all): Remove target.
* manual/Makefile: Include Makeconfig immediately after defining
subdir.
* math/Makefile: Likewise.
* misc/Makefile: Likewise.
* nis/Makefile: Likewise.
* nss/Makefile: Likewise.
* po/Makefile: Likewise.
(all): Remove target.
* posix/Makefile: Include Makeconfig immediately after defining
subdir.
* pwd/Makefile: Likewise.
* resolv/Makefile: Likewise.
* resource/Makefile: Likewise.
* rt/Makefile: Likewise.
* setjmp/Makefile: Likewise.
* shadow/Makefile: Likewise.
* signal/Makefile: Likewise.
* socket/Makefile: Likewise.
* soft-fp/Makefile: Likewise.
* stdio-common/Makefile: Likewise.
* stdlib/Makefile: Likewise.
* streams/Makefile: Likewise.
* string/Makefile: Likewise.
* sunrpc/Makefile: Likewise.
(all): Remove target.
* sysvipc/Makefile: Include Makeconfig immediately after defining
subdir.
* termios/Makefile: Likewise.
* time/Makefile: Likewise.
* timezone/Makefile: Likewise.
(all): Remove target.
* wcsmbs/Makefile: Include Makeconfig immediately after defining
subdir.
* wctype/Makefile: Likewise.
libidn/ChangeLog:
* Makefile: Include Makeconfig immediately after defining subdir.
localedata/ChangeLog:
* Makefile: Include Makeconfig immediately after defining subdir.
(all): Remove target.
nptl/ChangeLog:
* Makefile: Include Makeconfig immediately after defining subdir.
nptl_db/ChangeLog:
* Makefile: Include Makeconfig immediately after defining subdir.
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Fixes to address issues from BZ #15022 resolution, as follows:
* TLS updates to csu/libc-tls.c -- we now have a proper main map, so
there's no longer a need to create a separate fake one to keep TLS
structures,
* random updates to elf/dl-close.c -- LM_ID_BASE is now a valid name
space ID for static executables as well, so assert that we don't
unload the main map. Similarly dl_nns isn't supposed to be 0 for
static executables anymore,
* actual BZ #16046 fix to elf/dl-iteratephdr.c -- the dl_iterate_phdr
special function for static executables isn't needed anymore, provided
that l_phdr and l_phnum members of the main map have been properly
initialized (done in _dl_non_dynamic_init in elf/dl-support.c now),
* ld.so.cache loader update to elf/dl-load.c --
GL(dl_ns)[LM_ID_BASE]._ns_loaded is now always initialized in static
executables so can become the fallback loader map to check for
DF_1_NODEFLIB, provided that the l_flags_1 member of the main map has
been properly initialized (done in elf/dl-support.c now); this also
ensures previous semantics elsewhere in elf/dl-load.c,
* matching updates to elf/dl-support.c -- to complement the two fixes
above.
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Update copyright years that are not handled by scripts/update-copyright.
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The pointer guard used for pointer mangling was not initialized for
static applications resulting in the security feature being disabled.
The pointer guard is now correctly initialized to a random value for
static applications. Existing static applications need to be
recompiled to take advantage of the fix.
The test tst-ptrguard1-static and tst-ptrguard1 add regression
coverage to ensure the pointer guards are sufficiently random
and initialized to a default value.
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Long ago static startup did not parse the auxiliary vector and therefore
could not get at any `AT_FPUCW' tag to check whether upon FPU context
allocation the kernel would use a FPU control word setting different to
that provided by the `__fpu_control' variable. Static startup therefore
always initialized the FPU control word, forcing immediate FPU context
allocation even for binaries that otherwise never used the FPU.
As from GIT commit f8f900ecb9096ec47f5b7bb7626e29223c69061a static
startup supports parsing the auxiliary vector, so now it can avoid
explicit initialization of the FPU control word, just as can dynamic
startup, in the usual case where the setting written to the FPU control
word would be the same as the kernel uses. This defers FPU context
allocation until the binary itself actually pokes at the FPU.
Note that the `AT_FPUCW' tag is usually absent from the auxiliary vector
in which case _FPU_DEFAULT is assumed to be the kernel default.
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This avoids a linker bug triggering for MIPS SVR4 binaries:
http://sourceware.org/bugzilla/show_bug.cgi?id=15365
and regardless serves as a documentation of intent.
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gcrt1.o
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This reverts the change that allows the POSIX Thread default stack size
to be changed by the environment variable
GLIBC_PTHREAD_DEFAULT_STACKSIZE. It has been requested that more
discussion happen before this change goes into 2.18.
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New environment variable GLIBC_PTHREAD_DEFAULT_STACKSIZE to do this.
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* catgets/gencat.c: Update copyright year.
* csu/version.c: Likewise.
* debug/catchsegv.sh: Likewise.
* debug/pcprofiledump.c: Likewise.
* debug/xtrace.sh: Likewise.
* elf/ldconfig.c: Likewise.
* elf/ldd.bash.in: Likewise.
* elf/pldd.c: Likewise.
* elf/sotruss.ksh: Likewise.
* elf/sprof.c: Likewise.
* iconv/iconv_prog.c: Likewise.
* iconv/iconvconfig.c: Likewise.
* locale/programs/locale.c: Likewise.
* locale/programs/localedef.c: Likewise.
* login/programs/pt_chown.c: Likewise.
* malloc/memusage.sh: Likewise.
* malloc/memusagestat.c: Likewise.
* malloc/mtrace.pl: Likewise.
* nscd/nscd.c: Likewise.
* nss/getent.c: Likewise.
* nss/makedb.c: Likewise.
* posix/getconf.c: Likewise.
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* csu/libc-tls.c (static_dtv): Renamed to ...
(_dl_static_dtv): This. Make it global.
(_dl_initial_dtv): Removed.
(__libc_setup_tls): Updated.
* elf/dl-tls.c (DL_INITIAL_DTV): New macro.
(_dl_deallocate_tls): Replace GL(dl_initial_dtv) with
DL_INITIAL_DTV.
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This adds the bits missing from fd5bdc0924e0cfd1688b632068c1b26f3b0c88da.
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