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
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net	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
netinet	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
nfs	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sys	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
_G_config.h	Post-cleanup 2: minimize _G_config.h.	2018-02-07 10:10:32 -05:00
_itoa.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
a.out.h
abort-instr.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
adaptive_spin_count.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
aio_misc.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
allocalim.h
arch-fd_to_filename.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
asm-syntax.h
atomic-machine.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
c++-types.data
confstr.h
crti.S	Introduce <elf-initfini.h> and ELF_INITFINI for all architectures	2020-02-18 15:12:25 +01:00
crtn.S	Introduce <elf-initfini.h> and ELF_INITFINI for all architectures	2020-02-18 15:12:25 +01:00
device-nrs.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dirstream.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-auxv.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-cache.h	ldconfig/x86: Store ISA level in cache and aux cache	2021-01-13 05:51:17 -08:00
dl-dtprocnum.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-dtv.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-fcntl.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-fileid.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-fptr.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-hash.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-irel.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-isa-level.h	ldconfig/x86: Store ISA level in cache and aux cache	2021-01-13 05:51:17 -08:00
dl-librecon.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-lookupcfg.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-machine.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-mman.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-osinfo.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-procinfo.c
dl-procinfo.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-procruntime.c	ld.so: Add architecture specific fields	2017-11-13 08:02:52 -08:00
dl-prop.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-sysdep.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-tls.h
dl-unistd.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-vdso-setup.c	elf: Move vDSO setup to rtld (BZ#24967)	2020-01-03 11:22:07 -03:00
dl-vdso-setup.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-vdso.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dwarf2.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
elf_machine_sym_no_match.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
elf-initfini.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
elf-read-prop.h	ldconfig/x86: Store ISA level in cache and aux cache	2021-01-13 05:51:17 -08:00
elide.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
eloop-threshold.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
entry.h
errqueue.h
exit-thread.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fd_to_filename.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fenv_private.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fips-private.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fix-fp-int-compare-invalid.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fix-fp-int-convert-overflow.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fix-int-fp-convert-zero.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
float128-abi.h	Move some float128 symbol version definitions.	2017-10-16 22:04:42 +00:00
fork.h	posix: Consolidate register-atfork	2021-03-12 10:19:22 -03:00
fpu_control.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
framestate.c	__frame_state_for: Use <unwind-link.h> for unwinder access	2021-03-01 15:59:36 +01:00
gcc-compat.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
gccframe.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
get-rounding-mode.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
gmp-mparam.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
hp-timing-common.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
hp-timing.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifreq.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-init.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-sel.h
internal-signals.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
intr-msg.h
ld.abilist
ldbl-classify-compat.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ldconfig.h	ldconfig/x86: Store ISA level in cache and aux cache	2021-01-13 05:51:17 -08:00
ldsodefs.h	Reduce the statically linked startup code [BZ #23323]	2021-02-25 12:13:02 +01:00
libanl.abilist
libBrokenLocale.abilist
libc-lock.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libc-mmap.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libc-mtag.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libc-start.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libc-symver.h	Support for multiple versions in versioned_symbol, compat_symbol	2021-03-25 12:33:02 +01:00
libc-tsd.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libc.abilist	Add the __libc_single_threaded variable	2020-07-06 11:15:58 +02:00
libcrypt.abilist
libdl.abilist
libm-alias-double.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libm-alias-float128.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libm-alias-float.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libm-alias-ldouble.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libm-test-ulps	Replace gen-libm-test.pl with gen-libm-test.py.	2018-08-09 15:34:12 +00:00
libm-test-ulps-name
libm.abilist
libnsl.abilist
libnss_compat.abilist
libnss_db.abilist
libnss_dns.abilist
libnss_files.abilist
libnss_hesiod.abilist
libnss_nis.abilist
libnss_nisplus.abilist
libpthread.abilist
libresolv.abilist
librt.abilist
libutil.abilist
link_map.h	ld.so: Add architecture specific fields	2017-11-13 08:02:52 -08:00
linkmap.h
local-setxid.h
localplt.data	ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486]	2020-02-15 11:01:23 +01:00
machine-gmon.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
machine-lock.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
machine-sp.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Makefile	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
malloc-alignment.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
malloc-machine.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
malloc-sysdep.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math_ldbl_opt.h	Use PRINTF_LDBL_IS_DBL instead of __ldbl_is_dbl.	2018-12-05 18:15:43 -02:00
math_ldbl.h
math_private_calls.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math_private.h	math: Remove mpa files [BZ #15267]	2021-03-11 14:26:36 +00:00
math-barriers.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-nan-payload-double.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-nan-payload-float.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-narrow-alias-float128.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-tests-arch.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-tests-exceptions.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-tests-rounding.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-tests-snan-cast.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-tests-snan-payload.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-tests-snan.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-tests-trap-force.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-tests-trap.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-tests.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-type-macros-double.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-type-macros-float128.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-type-macros-float.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-type-macros-ldouble.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-type-macros.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-use-builtins-ceil.h	math: Decompose math-use-builtins.h	2020-06-22 11:09:45 -03:00
math-use-builtins-copysign.h	math: Decompose math-use-builtins.h	2020-06-22 11:09:45 -03:00
math-use-builtins-floor.h	math: Decompose math-use-builtins.h	2020-06-22 11:09:45 -03:00
math-use-builtins-fma.h	math: Decompose math-use-builtins.h	2020-06-22 11:09:45 -03:00
math-use-builtins-nearbyint.h	math: Decompose math-use-builtins.h	2020-06-22 11:09:45 -03:00
math-use-builtins-rint.h	math: Decompose math-use-builtins.h	2020-06-22 11:09:45 -03:00
math-use-builtins-round.h	math: Decompose math-use-builtins.h	2020-06-22 11:09:45 -03:00
math-use-builtins-sqrt.h	math: Decompose math-use-builtins.h	2020-06-22 11:09:45 -03:00
math-use-builtins-trunc.h	math: Decompose math-use-builtins.h	2020-06-22 11:09:45 -03:00
math-use-builtins.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcopy.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memusage.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mmap_info.h	posix: Fix large mmap64 offset for mips64n32 (BZ#24699)	2019-07-10 16:52:50 -03:00
nan-high-order-bit.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
not-cancel.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
not-errno.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
nscd-types.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
pagecopy.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
paths.h
profil-counter.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
pty-private.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
register-dump.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
rtld-lowlevel.h
safe-fatal.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setjmpP.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sigcontextinfo.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
siglist-compat.c	signal: Move sys_siglist to a compat symbol	2020-07-07 14:10:58 -03:00
siglist-compat.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
siglist.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sigset-cvt-mask.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sigsetops.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
single-thread.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stackguard-macros.h
stackinfo.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stap-probe-machine.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
startup.h	Use <startup.h> in __libc_init_secure	2021-01-19 09:55:47 -08:00
stdio-lock.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
string_private.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
struct_stat_time64.h	linux: Add {f}stat{at} y2038 support	2020-10-09 17:02:07 -03:00
symbol-hacks.h	Break more lines before not after operators.	2019-02-25 13:19:19 +00:00
sysdep-cancel.h	nptl: Remove tst-cancel-wrappers test and related macros	2019-01-03 18:38:08 -02:00
sysdep.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
thread_state.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
time-clockid.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tininess.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tls-internal-struct.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tls-internal.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tls-internal.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tls-macros.h
tls-setup.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tls.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-audit.h
tst-stack-align.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
unsecvars.h
unwind-arch.h	Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder	2021-03-01 15:58:01 +01:00
unwind-dw2-fde-glibc.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
unwind-dw2-fde.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
unwind-dw2-fde.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
unwind-dw2.c	Legacy unwinder: Remove definition of _Unwind_GetCFA	2021-03-16 15:33:09 +01:00
unwind-link.h	Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder	2021-03-01 15:58:01 +01:00
unwind-pe.c
unwind-pe.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
unwind-resume.c	Implement _Unwind_Resume in libc on top of <unwind-link.h>	2021-03-01 16:00:03 +01:00
unwind-resume.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
unwind.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
utmp-equal.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
xstatver.h	Remove mknod wrapper functions, move them to symbols	2020-10-09 17:02:06 -03:00