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44829b3ddb
glibc/sysdeps/unix/sysv/linux/powerpc
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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
..
bits Define PTHREAD_STACK_MIN to sysconf(_SC_THREAD_STACK_MIN) 2021-07-09 15:10:35 -07:00
powerpc32 String: Add support for __memcmpeq() ABI on all targets 2021-10-26 16:51:29 -05:00
powerpc64 String: Add support for __memcmpeq() ABI on all targets 2021-10-26 16:51:29 -05:00
sys Add PTRACE_GET_RSEQ_CONFIGURATION from Linux 5.13 to sys/ptrace.h 2021-08-09 16:51:38 +00:00
configure configure: Don't check LD -v --help for LIBC_LINKER_FEATURE 2021-10-25 13:17:44 -07:00
configure.ac powerpc: Use --no-tls-get-addr-optimize in test only if the linker supports it 2021-08-24 09:26:44 -07:00
dl-auxv.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-cache.h Update. 2003-06-25 08:19:44 +00:00
elision-conf.c nptl: Move elision implementations into libc 2021-02-23 14:59:34 +01:00
elision-conf.h nptl: Move elision implementations into libc 2021-02-23 14:59:34 +01:00
elision-lock.c nptl: Move elision implementations into libc 2021-02-23 14:59:34 +01:00
elision-timed.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
elision-trylock.c nptl: Move elision implementations into libc 2021-02-23 14:59:34 +01:00
elision-unlock.c nptl: Move elision implementations into libc 2021-02-23 14:59:34 +01:00
get_timebase_freq.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
htm.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Implies NPTL is no longer an add-on! 2014-07-07 09:29:06 -07:00
ioctl.c misc: Add time64 alias for ioctl 2021-07-21 11:58:09 +02:00
ipc_priv.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
kernel_sigaction.h m68k: Fix sigaction kernel definition (BZ #23960) 2018-12-18 16:45:10 -02:00
kernel_termios.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
kernel-features.h linux: Consolidate Linux setsockopt implementation 2021-07-06 11:45:35 -03:00
ldconfig.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ldd-rewrite.sed
libc-start.c Reduce the statically linked startup code [BZ #23323] 2021-02-25 12:13:02 +01:00
libc-start.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libc-vdso.h elf: Fix dynamic-link.h usage on rtld.c 2021-10-14 14:52:07 -03:00
libpthread-compat.c nptl: Move pthread_attr_setstacksize into libc 2021-05-11 19:33:20 +02:00
Makefile powerpc: Use --no-tls-get-addr-optimize in test only if the linker supports it 2021-08-24 09:26:44 -07:00
nldbl-abi.h 2006-01-27 Dwayne Grant McConnell <decimal@us.ibm.com> 2006-01-28 00:15:15 +00:00
pthread_attr_setstack.c PowerPC: Move remaining nptl/sysdeps/unix/sysv/linux/powerpc/ files. 2014-05-26 11:45:14 -05:00
pthread_attr_setstacksize.c PowerPC: Move remaining nptl/sysdeps/unix/sysv/linux/powerpc/ files. 2014-05-26 11:45:14 -05:00
readelflib.c ldconfig/x86: Store ISA level in cache and aux cache 2021-01-13 05:51:17 -08:00
rt-sysdep.c Update. 2004-04-19 06:19:34 +00:00
rtld_static_init.h powerpc: Remove _dl_var_init 2021-05-17 10:08:17 +02:00
sigcontextinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
socket-constants-time64.h linux: Add fallback for 64-bit time_t SO_TIMESTAMP{NS} 2021-06-15 10:42:06 -03:00
struct_kernel_shmid64_ds.h sysv: linux: Add 64-bit time_t variant for shmctl 2020-07-09 12:05:47 -03:00
syscall.S Add build option to disable usage of scv on powerpc 2021-06-10 16:23:25 -03:00
sysconf.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sysdep.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sysdep.h powerpc: Remove backtrace implementation 2021-10-20 10:40:53 -03:00
test-gettimebasefreq-static.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
test-gettimebasefreq.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
test-powerpc-linux-sysconf.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
time.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Versions Add missing symbols to Version files 2021-06-02 07:32:19 +02:00
xstatver.h Remove mknod wrapper functions, move them to symbols 2020-10-09 17:02:06 -03:00