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0923f74ada
glibc/malloc
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Florian Weimer 0923f74ada Support for multiple versions in versioned_symbol, compat_symbol 
This essentially folds compat_symbol_unique functionality into
compat_symbol.

This change eliminates the need for intermediate aliases for defining
multiple symbol versions, for both compat_symbol and versioned_symbol.
Some binutils versions do not suport multiple versions per symbol on
some targets, so aliases are automatically introduced, similar to what
compat_symbol_unique did.  To reduce symbol table sizes, a configure
check is added to avoid these aliases if they are not needed.

The new mechanism works with data symbols as well as function symbols,
due to the way an assembler-level redirect is used.  It is not
compatible with weak symbols for old binutils versions, which is why
the definition of __malloc_initialize_hook had to be changed.  This
is not a loss of functionality because weak symbols do not matter
to dynamic linking.

The placeholder symbol needs repeating in nptl/libpthread-compat.c
now that compat_symbol is used, but that seems more obvious than
introducing yet another macro.

A subtle difference was that compat_symbol_unique made the symbol
global automatically.  compat_symbol does not do this, so static
had to be removed from the definition of
__libpthread_version_placeholder.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2021-03-25 12:33:02 +01:00
..
alloc_buffer_alloc_array.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
alloc_buffer_allocate.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
alloc_buffer_copy_bytes.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
alloc_buffer_copy_string.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
alloc_buffer_create_failure.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
arena.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Depend added rt to malloc/Depend [BZ #27132] 2021-02-23 10:04:45 +01:00
dynarray_at_failure.c malloc: Sync dynarray with gnulib 2021-02-09 16:57:54 -03:00
dynarray_emplace_enlarge.c malloc: Sync dynarray with gnulib 2021-02-09 16:57:54 -03:00
dynarray_finalize.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dynarray_resize_clear.c malloc: Sync dynarray with gnulib 2021-02-09 16:57:54 -03:00
dynarray_resize.c malloc: Sync dynarray with gnulib 2021-02-09 16:57:54 -03:00
dynarray-skeleton.c malloc: Sync dynarray with gnulib 2021-02-09 16:57:54 -03:00
dynarray.h malloc: Sync dynarray with gnulib 2021-02-09 16:57:54 -03:00
hooks.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Makefile malloc: Turn tst-mallocstate into a non-internal test 2021-03-09 21:07:24 +01:00
malloc-hooks.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
malloc-internal.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
malloc.c Support for multiple versions in versioned_symbol, compat_symbol 2021-03-25 12:33:02 +01:00
malloc.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
mallocbug.c Reformat malloc to gnu style. 2014-01-02 09:40:10 +01:00
mcheck-init.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
mcheck.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
mcheck.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memusage.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memusage.sh Update copyright dates not handled by scripts/update-copyrights. 2021-01-02 12:17:34 -08:00
memusagestat.c Update copyright dates not handled by scripts/update-copyrights. 2021-01-02 12:17:34 -08:00
morecore.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
mtrace.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
mtrace.pl Update copyright dates not handled by scripts/update-copyrights. 2021-01-02 12:17:34 -08:00
obstack.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
obstack.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
reallocarray.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
scratch_buffer_dupfree.c malloc: Add scratch_buffer_dupfree 2021-01-05 11:33:16 -03:00
scratch_buffer_grow_preserve.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
scratch_buffer_grow.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
scratch_buffer_set_array_size.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
set-freeres.c Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder 2021-03-01 15:58:01 +01:00
thread-freeres.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-alloc_buffer.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-calloc.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-dynarray-at-fail.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-dynarray-fail.c malloc: Sync dynarray with gnulib 2021-02-09 16:57:54 -03:00
tst-dynarray-shared.h malloc: Sync dynarray with gnulib 2021-02-09 16:57:54 -03:00
tst-dynarray.c malloc: Sync dynarray with gnulib 2021-02-09 16:57:54 -03:00
tst-free-errno.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-interpose-aux-nothread.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-interpose-aux-thread.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-interpose-aux.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-interpose-aux.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-interpose-nothread.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-interpose-skeleton.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-interpose-static-nothread.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-interpose-static-thread.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-interpose-thread.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-mallinfo2.c tst-mallinfo2.c: Remove useless trailing semicolon for macro 2021-02-01 19:28:00 +01:00
tst-malloc_info.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-malloc-backtrace.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-malloc-fork-deadlock.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-malloc-stats-cancellation.c [BZ #22830] malloc_stats: restore cancellation for stderr correctly. 2018-02-10 16:24:17 -05:00
tst-malloc-tcache-leak.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-malloc-thread-exit.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-malloc-thread-fail.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-malloc-too-large.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-malloc-usable-static-tunables.c Initialize tunable list with the GLIBC_TUNABLES environment variable 2016-12-31 23:49:24 +05:30
tst-malloc-usable-static.c Add framework for tunables 2016-12-31 23:49:24 +05:30
tst-malloc-usable-tunables.c Initialize tunable list with the GLIBC_TUNABLES environment variable 2016-12-31 23:49:24 +05:30
tst-malloc-usable.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-malloc.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-mallocfork2.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-mallocfork.c Fix malloc tests build with GCC 10. 2019-06-10 22:12:08 +00:00
tst-mallocstate.c malloc: Turn tst-mallocstate into a non-internal test 2021-03-09 21:07:24 +01:00
tst-mallopt.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-mcheck.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-memalign.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-mtrace.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-mtrace.sh Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-mxfast.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-obstack.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-posix_memalign.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-pvalloc-fortify.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-pvalloc.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-realloc.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-reallocarray.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-safe-linking.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-scratch_buffer.c malloc: Add scratch_buffer_dupfree 2021-01-05 11:33:16 -03:00
tst-tcfree1.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-tcfree2.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-tcfree3.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-trim1.c * malloc/tst-trim1.c: New file. 2007-12-16 22:57:57 +00:00
tst-valloc.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Versions malloc: Add scratch_buffer_dupfree 2021-01-05 11:33:16 -03:00