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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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Make several tool features mandatory and simplify the code.
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GCC 4.5 warns about "extern void _end; &end;".
Use char[] instead, as that also doesn't fall foul
of a target's .sdata optimizations.
Signed-off-by: Richard Henderson <rth@twiddle.net>
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Before the change they crash on startup. Perform IREL relocations
earlier to prevent this.
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Old binutils don't provide IFUNC and don't generate the section start/end
symbols we expect. At least for now only add the initializer code for
static IFUNC relocations if multi-arch support is requested.
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