Linux: consolidate chown implementation
[glibc.git] / elf / simple-dl-hash.h
blob53702b3c55d70fb4b7df53c4614cc01aa373a0ee
1 /* __simple_dl_elf_hash for testing true elf symbol lookup.
2 Copyright (C) 2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
19 #ifndef _SIMPLE_DL_ELF_HASH_H
20 #define _SIMPLE_DL_ELF_HASH_H 1
22 #include <stdint.h>
24 /* For testing/benchmarking purposes. Real implementation in
25 sysdeps/generic/dl-hash.h. */
26 static uint32_t
27 __attribute__ ((unused))
28 __simple_dl_elf_hash (const char *name_arg)
30 unsigned long int hash = 0;
31 for (unsigned char c = *name_arg; c != '\0'; c = *(++name_arg))
33 unsigned long int hi;
34 hash = (hash << 4) + c;
35 hi = hash & 0xf0000000;
36 hash ^= hi >> 24;
37 hash &= 0x0fffffff;
39 return hash;
42 #endif /* simple-dl-hash.h */