src/lib/libc/string, branch releng/13.1FreeBSD source treehttp://cgit.freebsd.org/src/atom?h=releng%2F13.12022-01-19T00:32:29Zlibc: correct SPDX tag on strstr.c2022-01-19T00:32:29ZEd Masteemaste@FreeBSD.org2022-01-16T16:56:28Zurn:sha1:423fb85f33578988c28524bcfd41f967a4d1bf5d
It was obtained from musl, and is MIT licensed.
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
(cherry picked from commit 2e9bc9d14440aa17e6945a9b6613ebb1711fe960)
libc: fix misleading comment in strstr2022-01-19T00:32:29ZEd Masteemaste@FreeBSD.org2022-01-16T16:50:10Zurn:sha1:e475c5f6ca278639821a4668ea2f1e515383efb7
Obtained from: musl c53e9b239418
(cherry picked from commit c6750f07b43d18d39729570533f4ecb56da286bf)
libc: Use musl's optimized strchr and strchrnul2021-12-12T22:32:33ZEd Masteemaste@FreeBSD.org2021-03-02T01:57:36Zurn:sha1:bf4a70bb405cbc5e0ecf1babe0e55c220964e46c
Parentheses added to HASZERO macro to avoid a GCC warning, and formatted
with clang-format as we have adopted these and don't consider them
'contrib' code.
Obtained from: musl (snapshot at commit 4d0a82170a25)
Reviewed by: kib (libc integration), mjg (both earlier)
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D17630
(cherry picked from commit 7f72497ef756ff7d03d5560c2d1c1f92f73fcb52)
libc: add mempcpy(3) and wmempcpy(3)2021-07-22T10:33:10ZKonstantin Belousovkib@FreeBSD.org2021-07-14T15:41:36Zurn:sha1:dba677d13b26ad5422133b2ab76486b74d63ade4
(cherry picked from commit ee37f64cf875255338f917a9da76c643cf59786c)
libc/string/memset.c: Use unsigned long for stores2021-05-11T08:39:27ZAlex Richardsonarichardson@FreeBSD.org2021-04-19T23:19:20Zurn:sha1:fc19e3cb4fd1403a6c6dba3c9879db031faa9df3
While most 64-bit architectures have an assembly implementation of this
file, RISC-V does not. As we now store 8 bytes instead of 4 it should speed
up RISC-V.
Reviewed By: kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29536
(cherry picked from commit ab147542b7c0bbc41f7f0499b16933bd8f3f31d7)
libc/string/bcopy.c: Use intptr_t as the copy type2021-05-11T08:39:26ZAlex Richardsonarichardson@FreeBSD.org2021-04-19T23:15:57Zurn:sha1:0e1e71400a0fa3ac6fe5a90c4d830b06eef3e71e
While most 64-bit architectures have an assembly implementation of this
file RISC-V does not. As we now copy 8 bytes instead of 4 it should speed
up RISC-V. Using intptr_t instead of int also allows using this file for
CHERI pure-capability code since trying to copy pointers using integer
loads/stores will invalidate pointers.
Reviewed By: kib
Obtained from: CheriBSD (partially)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29535
(cherry picked from commit 0b4ad01d91a3b24cea00d54d25beed0f487c0183)
Remove __NO_TLS.2021-03-02T00:49:42ZKonstantin Belousovkib@FreeBSD.org2021-02-19T15:20:29Zurn:sha1:73dc6674e08c40151c1500860f60f7b22994a0ff
MFC note: this plus the merge of two preliminary removal of __NO_TLS
definitions for mips and risc-v break ABI. It was decided that doing
ABI break on tier 2 platforms at this stage of 13.0 release process is
better than drag on __NO_TLS presence for the 13.x branch lifetime.
(cherry picked from commit 3ae8d83d04a7a6ec11b64c89ee60c180b0bde30e)
Revert "Reimplement strlen"2021-02-03T19:39:49ZMateusz Guzikmjg@FreeBSD.org2021-02-03T19:38:10Zurn:sha1:8a680912a190d619be6194f88917052eed327f7b
This reverts commit 710e45c4b8539d028877769f1a4ec088c48fb5f1.
It breaks for some corner cases on big endian ppc64.
Given the stage of the release process it is best to revert for now.
Reported by: jhibbits
(cherry picked from commit 33f0540b13d949c7cc226a79927ddc2062ff98bf)
Reimplement strlen2021-02-01T12:39:18ZMateusz Guzikmjg@FreeBSD.org2021-01-29T21:48:11Zurn:sha1:e5b674594e64b86a34295a475bb6cdb67469f8da
The previous code neglected to use primitives which can find the end
of the string without having to branch on every character.
While here augment the somewhat misleading commentary -- strlen as
implemented here leaves performance on the table, especially so for
userspace. Every arch should get a dedicated variant instead.
In the meantime this commit lessens the problem.
Tested with glibc test suite.
Naive test just calling strlen in a loop on Haswell (ops/s):
$(perl -e "print 'A' x 3"):
before: 211198039
after: 338626619
$(perl -e "print 'A' x 100"):
before: 83151997
after: 98285919
(cherry picked from commit 710e45c4b8539d028877769f1a4ec088c48fb5f1)
strerror.3: Fix whitespace issue introduced in r3687142020-12-18T22:10:17ZJessica Clarkejrtc27@FreeBSD.org2020-12-18T22:10:17Zurn:sha1:ccb86b40c172e14b454b44ca52750c24939355ea
MFC with: 368714