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Noah Goldstein 44829b3ddb String: Add support for __memcmpeq() ABI on all targets 
No bug.

This commit adds support for __memcmpeq() as a new ABI for all
targets. In this commit __memcmpeq() is implemented only as an alias
to the corresponding targets memcmp() implementation. __memcmpeq() is
added as a new symbol starting with GLIBC_2.35 and defined in string.h
with comments explaining its behavior. Basic tests that it is callable
and works where added in string/tester.c

As discussed in the proposal "Add new ABI '__memcmpeq()' to libc"
__memcmpeq() is essentially a reserved namespace for bcmp(). The means
is shares the same specifications as memcmp() except the return value
for non-equal byte sequences is any non-zero value. This is less
strict than memcmp()'s return value specification and can be better
optimized when a boolean return is all that is needed.

__memcmpeq() is meant to only be called by compilers if they can prove
that the return value of a memcmp() call is only used for its boolean
value.

All tests in string/tester.c passed. As well build succeeds on
x86_64-linux-gnu target.
 		2021-10-26 16:51:29 -05:00
..
alpha
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alphaev6/fpu
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alphaev67/fpu
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bits Define PTHREAD_STACK_MIN to sysconf(_SC_THREAD_STACK_MIN) 2021-07-09 15:10:35 -07:00
fpu
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sys Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Implies
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Makefile nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
Versions Linux: Move timer_settime, __timer_settime64 from librt to libc 2021-06-28 09:51:01 +02:00
____longjmp_chk.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
a.out.h
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adjtime.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
adjtimex.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
aio_cancel.c Linux: Move aio_cancel, aio_cancel64 into libc 2021-06-25 11:48:46 +02:00
arch-syscall.h Update syscall lists for Linux 5.14 2021-09-08 12:42:06 +00:00
brk.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
c++-types.data
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clone.S Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
configure
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configure.ac
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dl-auxv.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-support.c
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dl-sysdep.c
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errlist-compat.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
fraiseexcpt.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
fstatfs.c linux: Consolidate fstatfs implementations 2021-02-11 07:58:31 -03:00
fstatfs64.c linux: Consolidate fstatfs implementations 2021-02-11 07:58:31 -03:00
fxstat64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
fxstatat64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
getclktck.c
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getcontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
getdents.c
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getdents64.c
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getegid.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
geteuid.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
gethostname.c Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
getppid.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
getrlimit64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
gettimeofday.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
glob-lstat-compat.c
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globfree.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ieee_get_fp_control.S Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
ieee_set_fp_control.S Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
ioperm.c Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
ipc_priv.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
jmp_buf-macros.h
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kernel-features.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
kernel_sigaction.h
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kernel_stat.h alpha: Remove anonymous union in struct stat [BZ #27042] 2020-12-21 09:09:43 -03:00
kernel_sysinfo.h
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kernel_termios.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ld.abilist
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libBrokenLocale.abilist
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libanl.abilist resolv: Move libanl into libc (if libpthread is in libc) 2021-07-02 11:45:00 +02:00
libc.abilist String: Add support for __memcmpeq() ABI on all targets 2021-10-26 16:51:29 -05:00
libc_malloc_debug.abilist Move malloc_{g,s}et_state to libc_malloc_debug 2021-07-22 18:38:10 +05:30
libcrypt.abilist
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libdl.abilist dlfcn: Move dlopen into libc 2021-06-03 08:26:04 +02:00
libm.abilist Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
libnsl.abilist
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libpthread.abilist nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
libresolv.abilist resolv: Move res_query functions into libc 2021-07-19 07:56:57 +02:00
librt-compat.c Linux: Move timer_settime, __timer_settime64 from librt to libc 2021-06-28 09:51:01 +02:00
librt.abilist Linux: Move timer_settime, __timer_settime64 from librt to libc 2021-06-28 09:51:01 +02:00
libthread_db.abilist
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libutil.abilist login: Move libutil into libc 2021-06-30 08:43:37 +02:00
localplt.data mtrace: Wean away from malloc hooks 2021-07-22 18:38:06 +05:30
lxstat64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
makecontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-abi.h
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oldglob.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_adjtime.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_getitimer.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_getrusage.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_gettimeofday.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_setitimer.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_settimeofday.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_utimes.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_wait4.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
pipe.S
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register-dump.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
rt_sigaction.S Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
select.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
setcontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
setfpucw.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
setrlimit64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
settimeofday.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
shlib-versions
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sigcontextinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sizes.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
statfs.c linux: Consolidate statfs implementations 2021-02-11 08:00:11 -03:00
statfs64.c linux: Consolidate statfs implementations 2021-02-11 08:00:11 -03:00
swapcontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
syscall.S Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
syscalls.list linux: Consolidate Linux setsockopt implementation 2021-07-06 11:45:35 -03:00
sysconf.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sysdep.h Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
timer_t_was_int_compat.h Linux: Define TIMER_T_WAS_INT_COMPAT in kernel-posix-timers.h 2021-06-28 09:51:00 +02:00
ucontext-offsets.sym
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vfork.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
wait4.c alpha: Provide wait4 for static library [BZ #27150] 2021-01-05 11:22:25 -03:00
wordexp.c
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xstat64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
xstatconv.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
xstatconv.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