Date: Fri, 29 May 2026 23:01:38 +0000 From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: c76ec2942795 - stable/15 - Adjust llvm-project main llvmorg-21-init-19288-gface93e724f4, part 1 Message-ID: <6a1a1ad2.421b7.2c193d58@gitrepo.freebsd.org>
index | next in thread | raw e-mail
The branch stable/15 has been updated by dim: URL: https://cgit.FreeBSD.org/src/commit/?id=c76ec29427955975909939e41052e19d000cf008 commit c76ec29427955975909939e41052e19d000cf008 Author: Dimitry Andric <dim@FreeBSD.org> AuthorDate: 2025-12-07 19:01:02 +0000 Commit: Dimitry Andric <dim@FreeBSD.org> CommitDate: 2026-05-29 22:57:30 +0000 Adjust llvm-project main llvmorg-21-init-19288-gface93e724f4, part 1 This adjusts the llvmorg-21-init-19288-gface93e724f4 import: add partial third-party/ top-level directory. PR: 292067 MFC after: 1 month (cherry picked from commit 3f16c588d1d8c46d7025f95003602807d9c1ddb9) --- .../third-party/siphash/include/siphash/SipHash.h | 160 +++++++++++++++++++++ 1 file changed, 160 insertions(+) diff --git a/contrib/llvm-project/third-party/siphash/include/siphash/SipHash.h b/contrib/llvm-project/third-party/siphash/include/siphash/SipHash.h new file mode 100644 index 000000000000..ca4fe45e4fdd --- /dev/null +++ b/contrib/llvm-project/third-party/siphash/include/siphash/SipHash.h @@ -0,0 +1,160 @@ +//===--- SipHash.h - An implementation of SipHash -------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This is a header-only implementation of SipHash. It lacks library +// dependencies so it can be used from LLVM and compiler-rt. +// +//===----------------------------------------------------------------------===// + +#include <stddef.h> +#include <stdint.h> + +// Lightly adapted from the SipHash reference C implementation: +// https://github.com/veorq/SipHash +// by Jean-Philippe Aumasson and Daniel J. Bernstein + +#define ROTL(x, b) (uint64_t)(((x) << (b)) | ((x) >> (64 - (b)))) + +#define U32TO8_LE(p, v) \ + (p)[0] = (uint8_t)((v)); \ + (p)[1] = (uint8_t)((v) >> 8); \ + (p)[2] = (uint8_t)((v) >> 16); \ + (p)[3] = (uint8_t)((v) >> 24); + +#define U64TO8_LE(p, v) \ + U32TO8_LE((p), (uint32_t)((v))); \ + U32TO8_LE((p) + 4, (uint32_t)((v) >> 32)); + +#define U8TO64_LE(p) \ + (((uint64_t)((p)[0])) | ((uint64_t)((p)[1]) << 8) | \ + ((uint64_t)((p)[2]) << 16) | ((uint64_t)((p)[3]) << 24) | \ + ((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40) | \ + ((uint64_t)((p)[6]) << 48) | ((uint64_t)((p)[7]) << 56)) + +#define SIPROUND \ + do { \ + v0 += v1; \ + v1 = ROTL(v1, 13); \ + v1 ^= v0; \ + v0 = ROTL(v0, 32); \ + v2 += v3; \ + v3 = ROTL(v3, 16); \ + v3 ^= v2; \ + v0 += v3; \ + v3 = ROTL(v3, 21); \ + v3 ^= v0; \ + v2 += v1; \ + v1 = ROTL(v1, 17); \ + v1 ^= v2; \ + v2 = ROTL(v2, 32); \ + } while (0) + +namespace { + +/// Computes a SipHash value +/// +/// \param in: pointer to input data (read-only) +/// \param inlen: input data length in bytes (any size_t value) +/// \param k: reference to the key data 16-byte array (read-only) +/// \returns output data, must be 8 or 16 bytes +/// +template <int cROUNDS, int dROUNDS, size_t outlen> +void siphash(const unsigned char *in, uint64_t inlen, + const unsigned char (&k)[16], unsigned char (&out)[outlen]) { + + const unsigned char *ni = (const unsigned char *)in; + const unsigned char *kk = (const unsigned char *)k; + + static_assert(outlen == 8 || outlen == 16, "result should be 8 or 16 bytes"); + + uint64_t v0 = UINT64_C(0x736f6d6570736575); + uint64_t v1 = UINT64_C(0x646f72616e646f6d); + uint64_t v2 = UINT64_C(0x6c7967656e657261); + uint64_t v3 = UINT64_C(0x7465646279746573); + uint64_t k0 = U8TO64_LE(kk); + uint64_t k1 = U8TO64_LE(kk + 8); + uint64_t m; + int i; + const unsigned char *end = ni + inlen - (inlen % sizeof(uint64_t)); + const int left = inlen & 7; + uint64_t b = ((uint64_t)inlen) << 56; + v3 ^= k1; + v2 ^= k0; + v1 ^= k1; + v0 ^= k0; + + if (outlen == 16) + v1 ^= 0xee; + + for (; ni != end; ni += 8) { + m = U8TO64_LE(ni); + v3 ^= m; + + for (i = 0; i < cROUNDS; ++i) + SIPROUND; + + v0 ^= m; + } + + switch (left) { + case 7: + b |= ((uint64_t)ni[6]) << 48; + [[fallthrough]]; + case 6: + b |= ((uint64_t)ni[5]) << 40; + [[fallthrough]]; + case 5: + b |= ((uint64_t)ni[4]) << 32; + [[fallthrough]]; + case 4: + b |= ((uint64_t)ni[3]) << 24; + [[fallthrough]]; + case 3: + b |= ((uint64_t)ni[2]) << 16; + [[fallthrough]]; + case 2: + b |= ((uint64_t)ni[1]) << 8; + [[fallthrough]]; + case 1: + b |= ((uint64_t)ni[0]); + break; + case 0: + break; + } + + v3 ^= b; + + for (i = 0; i < cROUNDS; ++i) + SIPROUND; + + v0 ^= b; + + if (outlen == 16) + v2 ^= 0xee; + else + v2 ^= 0xff; + + for (i = 0; i < dROUNDS; ++i) + SIPROUND; + + b = v0 ^ v1 ^ v2 ^ v3; + U64TO8_LE(out, b); + + if (outlen == 8) + return; + + v1 ^= 0xdd; + + for (i = 0; i < dROUNDS; ++i) + SIPROUND; + + b = v0 ^ v1 ^ v2 ^ v3; + U64TO8_LE(out + 8, b); +} + +} // end anonymous namespacehome | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?6a1a1ad2.421b7.2c193d58>