glibc/sysdeps/unix/sysv/linux/csky
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
..
abiv2 Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
bits linux: Set LFS statfs as default 2021-02-11 07:58:09 -03:00
sys Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Implies
Makefile
Versions
arch-syscall.h Update syscall lists for Linux 5.14 2021-09-08 12:42:06 +00:00
c++-types.data
configure Regenerate configure scripts. 2020-08-04 21:36:19 -04:00
configure.ac
jmp_buf-macros.h
kernel-features.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
kernel_stat.h linux: Set default kernel_stat.h to LFS 2021-02-11 07:58:05 -03:00
ld.abilist ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486] 2020-02-15 11:01:23 +01:00
ldconfig.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libBrokenLocale.abilist
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 glibc.malloc.check: Wean away from malloc hooks 2021-07-22 18:38:08 +05:30
libcrypt.abilist
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
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.abilist Linux: Move timer_settime, __timer_settime64 from librt to libc 2021-06-28 09:51:01 +02:00
libthread_db.abilist
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
makecontext.c 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
shlib-versions
sigcontextinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
syscalls.list
sysdep.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
time64-compat.h y2038: Add support for 64-bit time on legacy ABIs 2021-06-15 10:42:11 -03:00