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Alex Butler f8db9906d7 aarch64: MTE compatible strncmp 
Add support for MTE to strncmp. Regression tested with xcheck and benchmarked
with glibc's benchtests on the Cortex-A53, Cortex-A72, and Neoverse N1.

The existing implementation assumes that any access to the pages in which the
string resides is safe. This assumption is not true when MTE is enabled. This
patch updates the algorithm to ensure that accesses remain within the bounds
of an MTE tag (16-byte chunks) and improves overall performance.

Co-authored-by: Branislav Rankov <branislav.rankov@arm.com>
Co-authored-by: Wilco Dijkstra <wilco.dijkstra@arm.com>
(cherry picked from commit 03e1378f94)
 		2024-11-04 16:25:27 +00:00
..
aarch64 aarch64: MTE compatible strncmp 2024-11-04 16:25:27 +00:00
alpha Update Alpha libm-test-ulps 2019-09-03 21:38:07 +02:00
arm arm: CVE-2020-6096: Fix multiarch memcpy for negative length [BZ #25620] 2020-07-15 15:08:59 -04:00
csky C-SKY: mark lr as undefined to stop unwinding 2019-03-11 09:51:14 +08:00
generic Add nocancel version of pread64() 2020-01-17 13:56:43 +01:00
gnu Don't make errlist.o[s].d depend on errlist-compat.h 2024-05-09 20:09:21 -07:00
hppa Add new file missed in previous hppa commit. 2020-05-04 22:00:52 +02:00
htl hurd: advertise *_setpshared as not supported 2019-01-02 22:21:34 +01:00
hurd Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
i386 x86: Check IFUNC definition in unrelocated executable [BZ #20019] 2021-01-13 14:27:36 -08:00
ia64 Refactor hp-timing rtld usage 2019-03-22 17:30:44 -03:00
ieee754 math/test-sinl-pseudo: Use stack protector only if available 2020-03-11 12:59:42 +01:00
init_array Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
m68k wcsmbs: optimize wcpcpy 2019-02-27 10:00:34 -03:00
mach misc: Add twalk_r function 2019-05-02 11:42:51 +02:00
microblaze Break more lines before not after operators. 2019-02-25 13:19:19 +00:00
mips Add and move fall-through comments in system-specific code. 2019-02-26 02:09:18 +00:00
nios2 Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
nptl nptl: Remove unnecessary forwarding of pthread_cond_clockwait from libc 2019-07-18 11:24:33 -03:00
posix posix: Fix system error return value [BZ #25715] 2020-03-24 08:48:58 -03:00
powerpc Fix array overflow in backtrace on PowerPC (bug 25423) 2020-03-18 10:26:13 -04:00
pthread nptl: Add POSIX-proposed sem_clockwait 2019-07-12 13:36:23 +00:00
riscv riscv: restore ABI compatibility (bug 24484) 2019-07-04 14:55:58 +02:00
s390 S390: Also check vector support in memmove ifunc-selector [BZ #27511] 2021-03-26 11:02:33 +01:00
sh Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
sparc nptl: Rename lll_timedlock to lll_clocklock and add clockid parameter 2019-07-12 13:36:25 +00:00
unix AArch64: Use __memcpy_simd on Neoverse N2/V1 2020-10-14 14:30:01 +01:00
wordsize-32 Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
wordsize-64 Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
x86 x86: Fix incorrect scope of setting `shared_per_thread` [BZ# 30745] 2023-09-11 22:48:07 -05:00
x86_64 x86_64: Optimize ffsll function code size. 2024-02-08 09:00:44 -08:00