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glibc/sysdeps/x86_64
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Fangrui Song de38b2a343 elf: Remove ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA 
If an executable has copy relocations for extern protected data, that
can only work if the library containing the definition is built with
assumptions (a) the compiler emits GOT-generating relocations (b) the
linker produces R_*_GLOB_DAT instead of R_*_RELATIVE.  Otherwise the
library uses its own definition directly and the executable accesses a
stale copy.  Note: the GOT relocations defeat the purpose of protected
visibility as an optimization, but allow rtld to make the executable and
library use the same copy when copy relocations are present, but it
turns out this never worked perfectly.

ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA has strange semantics when both
a.so and b.so define protected var and the executable copy relocates
var: b.so accesses its own copy even with GLOB_DAT.  The behavior change
is from commit 62da1e3b00 (x86) and then
copied to nios2 (ae5eae7cfc) and arc
(0e7d930c4c).

Without ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA, b.so accesses the copy
relocated data like a.so.

There is now a warning for copy relocation on protected symbol since
commit 7374c02b68.  It's extremely
unlikely anyone relies on the ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA
behavior, so let's remove it: this removes a check in the symbol lookup
code.
2022-06-15 11:29:55 -07:00
..
64
fpu x86: Optimize svml_s_tanhf4_core_sse4.S 2022-06-09 12:51:25 -07:00
multiarch x86: Add sse42 implementation to strcmp's ifunc 2022-06-14 20:58:09 -07:00
nptl nptl: Add backoff mechanism to spinlock loop 2022-05-09 14:38:40 -07:00
x32 x86_64: Remove _dl_skip_args usage 2022-05-30 16:33:34 -03:00
____longjmp_chk.S
__longjmp.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
_mcount.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
abort-instr.h
add_n.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
addmul_1.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
bsd-_setjmp.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
bsd-setjmp.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
configure x86/configure.ac: Define PI_STATIC_AND_HIDDEN/SUPPORT_STATIC_PIE 2022-02-14 07:34:54 -08:00
configure.ac x86/configure.ac: Define PI_STATIC_AND_HIDDEN/SUPPORT_STATIC_PIE 2022-02-14 07:34:54 -08:00
crti.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
crtn.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
dl-hwcaps-subdirs.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
dl-irel.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
dl-machine.h elf: Remove ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA 2022-06-15 11:29:55 -07:00
dl-procinfo.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
dl-runtime.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
dl-tls.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
dl-tls.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
dl-tlsdesc.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
dl-tlsdesc.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
dl-trampoline.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
dl-trampoline.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
ffs.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
ffsll.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
htonl.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
ifuncmain8.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
ifuncmod8.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
Implies Remove dbl-64/wordsize-64 (part 2) 2021-01-07 15:26:26 +00:00
isa.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
l10nflist.c
link-defines.sym elf: Remove Intel MPX support (lazy PLT, ld.so profile, and LD_AUDIT) 2021-10-11 11:14:02 -07:00
locale-defines.sym
localplt.data mtrace: Wean away from malloc hooks 2021-07-22 18:38:06 +05:30
lshift.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
machine-gmon.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
Makefile build: Properly generate .d dependency files [BZ #28922] 2022-02-25 10:35:45 -08:00
memchr.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
memcmp.S x86-64: Fix SSE2 memcmp and SSSE3 memmove for x32 2022-04-22 11:23:15 -07:00
memcmpeq.S x86: Optimize memcmp SSE2 in memcmp.S 2022-04-15 13:08:35 -05:00
memcpy_chk.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
memcpy.S
memmove_chk.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
memmove.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
mempcpy_chk.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
mempcpy.S
memrchr.S x86: Optimize memrchr-sse2.S 2022-06-07 13:09:36 -07:00
memset_chk.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
memset.S x86_64: Remove bzero optimization 2022-05-16 09:36:06 -03:00
mp_clz_tab.c
mul_1.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
preconfigure
preconfigure.ac
rawmemchr.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
rshift.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
rtld-offsets.sym
setjmp.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
stackguard-macros.h
stackinfo.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
start.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
stpcpy.S
strcasecmp_l-nonascii.c
strcasecmp_l.S
strcasecmp.S
strcat.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
strchr.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
strchrnul.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
strcmp.S x86: Remove str{n}{case}cmp-ssse3 2022-04-14 23:21:41 -05:00
strcpy.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
strlen.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
strncase_l-nonascii.c
strncase_l.S
strncase.S
strncmp.S
strnlen.S
strrchr.S x86: Optimize {str|wcs}rchr-sse2 2022-04-22 23:08:36 -05:00
sub_n.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
submul_1.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
sysdep.h x86: ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST expect no transactions 2022-06-07 13:10:32 -07:00
tls_get_addr.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tlsdesc.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tlsdesc.sym
tst-audit3.c
tst-audit4-aux.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-audit4.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-audit5.c
tst-audit6.c
tst-audit7.c
tst-audit10-aux.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-audit10.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-audit.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-auditmod3a.c
tst-auditmod3b.c
tst-auditmod4a.c
tst-auditmod4b.c
tst-auditmod5a.c
tst-auditmod5b.c
tst-auditmod6a.c
tst-auditmod6b.c
tst-auditmod6c.c
tst-auditmod7a.c
tst-auditmod7b.c
tst-auditmod10a.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-auditmod10b.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-avx512-aux.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-avx512.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-avx512mod.c
tst-avx-aux.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-avx.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-avxmod.c
tst-glibc-hwcaps.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-platform-1.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-platformmod-1.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-platformmod-2.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-quad1.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-quad1pie.c
tst-quad2.c
tst-quad2pie.c
tst-quadmod1.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-quadmod1pie.S
tst-quadmod2.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-quadmod2pie.S
tst-rsi-strlen.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-rsi-wcslen.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-split-dynreloc.c
tst-split-dynreloc.lds
tst-sse.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-ssemod.c
tst-x86_64-1.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-x86_64mod-1.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
tst-x86-64-tls-1.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
Versions
wcschr.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
wcscmp.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
wcslen.S x86: Small improvements for wcslen 2022-03-28 15:00:03 -05:00
wcsrchr.S x86: Optimize {str|wcs}rchr-sse2 2022-04-22 23:08:36 -05:00
wmemcmp.S x86: Fix missing __wmemcmp def for disable-multiarch build 2022-04-19 20:18:57 -05:00
wmemset_chk.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
wmemset.S
wordcopy.c