Robert Clausecker 5048c1b855 lib/libc/amd64/string: add timingsafe_memcmp() assembly implementation ... Conceptually very similar to timingsafe_bcmp(), but with comparison logic inspired by Elijah Stone's fancy memcmp. A baseline (SSE) implementation was omitted this time as I was not able to get it to perform adequately. Best I got was 8% over the scalar version for long inputs, but slower for short inputs. Sponsored by: The FreeBSD Foundation Approved by: security (cperciva) Inspired by: https://github.com/moon-chilled/fancy-memcmp Differential Revision: https://reviews.freebsd.org/D41696		2023-10-15 15:25:53 -04:00
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string	lib/libc/amd64/string: add timingsafe_memcmp() assembly implementation	2023-10-15 15:25:53 -04:00
sys	Remove $FreeBSD$: one-line sh pattern	2023-08-16 11:55:03 -06:00
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amd64_archlevel.h	lib/libc/amd64: add archlevel-based simd dispatch framework	2023-08-04 01:53:43 +03:00
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