Mateusz Guzik 9535440569 amd64: implement strlen in assembly, take 2 ... Tested with glibc test suite. The C variant in libkern performs excessive branching to find the zero byte instead of using the bsfq instruction. The same code patched to use it is still slower than the routine implemented here as the compiler keeps neglecting to perform certain optimizations (like using leaq). On top of that the routine can be used as a starting point for copyinstr which operates on words intead of bytes. The previous attempt had an instance of swapped operands to andq when dealing with fully aligned case, which had a side effect of breaking the code for certain corner cases. Noted by jrtc27. Sample results: $(perl -e "print 'A' x 3"): stock: 211198039 patched:338626619 asm: 465609618 $(perl -e "print 'A' x 100"): stock: 83151997 patched: 98285919 asm: 120719888 Reviewed by: jhb, kib Differential Revision: https://reviews.freebsd.org/D28779 (cherry picked from commit 5fa12fe0cd)		2021-04-10 13:53:46 +00:00
..
amd64	amd64: implement strlen in assembly, take 2	2021-04-10 13:53:46 +00:00
arm	arm64: Add support for bcm2838 RNG	2021-03-20 11:12:13 +01:00
arm64	arm64: Add support for the RK805/RK808 RTC	2021-04-10 09:34:03 +10:00
bsm	Add aio_writev and aio_readv	2021-01-02 19:57:58 -07:00
cam	cam: Don't permit crashdumps on non-pollable devices.	2021-03-22 13:37:38 -07:00
cddl	Teach DTrace that unaligned accesses are OK on aarch64, not just x86.	2021-03-25 09:17:38 -04:00
compat	Reduce chance of RCU deadlock in the LinuxKPI by implementing the section	2021-04-06 12:23:08 +02:00
conf	amd64: implement strlen in assembly, take 2	2021-04-10 13:53:46 +00:00
contrib	zfs: merge OpenZFS master-891568c99	2021-04-04 15:19:09 +02:00
crypto	armv8crypto: note derivation in armv8_crypto_wrap.c	2021-03-22 13:14:51 -03:00
ddb	ddb: add ability to print user registers	2021-01-08 14:53:06 -04:00
dev	sys/dev/md: Drop unncessary __GLOBL(mfs_root)	2021-04-10 14:01:05 +01:00
dts	Switch to the new device-tree vendor tree	2021-01-15 20:08:39 +01:00
fs	devfs: fix use count leak when using TIOCSCTTY	2021-04-10 05:57:55 +00:00
gdb	gdb(4): allow bulk write of registers	2020-12-23 14:37:05 -04:00
geom	gmirror: Pre-allocate the timeout event structure	2021-03-17 21:24:20 -04:00
gnu	Remove the old dts imported tree.	2021-01-15 20:09:55 +01:00
i386	x86: clear %db registers in new process	2021-04-06 03:47:34 +03:00
isa	Move back the isa non-PNP driver deadline to FreeBSD 14.	2021-03-08 16:02:44 -07:00
kern	Unbreak MSG_CMSG_CLOEXEC	2021-04-10 13:52:15 +01:00
kgssapi	State kgssapi dependency on xdr.	2020-09-17 22:29:38 +00:00
libkern	random(9): Restore historical [0,2^31-1] output range and related man documention.	2021-03-25 17:57:02 +11:00
mips	nlmrsa: Mark deprecated for 14.	2021-03-22 15:52:52 -07:00
modules	AMD-vi: Fix IOMMU device interrupts being overridden	2021-04-07 18:55:38 +08:00
net	Fix fib algo rebuild delay calculation.	2021-04-08 20:15:04 +00:00
net80211	net80211: Fix a typo in a comment	2021-03-20 11:13:31 +01:00
netgraph	netgraph/ng_car: Add color marking code	2021-02-26 13:29:39 +01:00
netinet	tcp: Perform simple fast retransmit when SACK Blocks are missing on SACK session	2021-04-08 23:12:26 +02:00
netinet6	Flush remaining routes from the routing table during VNET shutdown.	2021-03-13 20:19:17 +00:00
netipsec	Convert unmapped mbufs before computing checksums in IPsec.	2021-01-19 11:52:00 -08:00
netpfil	dummynet: Move timekeeping information into dn_cfg	2021-04-07 17:25:54 +02:00
netsmb	net: clean up empty lines in .c and .h files	2020-09-01 21:19:14 +00:00
nfs	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nfsclient	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nfsserver	nfs: Mark unused statistics variable as reserved	2020-11-18 04:35:49 +00:00
nlm	nlm: clean up empty lines in .c and .h files	2020-09-01 22:14:52 +00:00
ofed	MFC 4e38478c59:	2021-04-01 11:19:42 +02:00
opencrypto	opencrypto: Make cryptosoft attach silently	2021-03-12 12:21:09 -05:00
powerpc	[PowerPC] Remove unused IPI type count tracking.	2021-04-06 22:10:40 -05:00
riscv	riscv: fix errors in some atomic type aliases	2021-03-08 10:03:01 -04:00
rpc	nfs-over-tls: handle res.gid.gid_val correctly for memory allocation	2021-01-12 13:59:52 -08:00
security	close_range: add audit support	2021-03-17 22:22:48 +00:00
sys	vfs: replace vfs_smr_quiesce with vfs_smr_synchronize	2021-04-10 05:57:56 +00:00
teken	loader: implement framebuffer console	2021-01-02 21:41:36 +02:00
tests	Enable running fib tests inside vnet jail.	2021-01-17 20:32:26 +00:00
tools	Switch to the new device-tree vendor tree	2021-01-15 20:08:39 +01:00
ufs	FFS extattr: fix handling of the tail	2021-03-04 21:07:25 +02:00
vm	Style	2021-04-07 06:32:40 +03:00
x86	Rename _cscan_atomic.h and _cscan_bus.h to atomic_san.h and bus_san.h	2021-03-15 11:39:11 -04:00
xdr	xdr: clean up empty lines in .c and .h files	2020-09-01 22:13:28 +00:00
xen	xen: remove .swp file from public headers	2021-01-11 18:14:11 +01:00
Makefile