2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
/* $NetBSD: hash.h,v 1.6 2008/04/28 20:24:10 martin Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Luke Mewburn.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SYS_HASH_H_
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#define _SYS_HASH_H_
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#include <sys/types.h>
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#ifdef __HAVE_MACHINE_HASH_H
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#include <machine/hash.h>
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#endif
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#ifndef __HAVE_HASH32_BUF /* not overridden by MD hash */
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#define HASH32_BUF_INIT 5381
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/*
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* uint32_t
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* hash32_buf(const void *bf, size_t len, uint32_t hash)
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* return a 32 bit hash of the binary buffer buf (size len),
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* seeded with an initial hash value of hash (usually HASH32_BUF_INIT).
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*/
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static __inline uint32_t
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hash32_buf(const void *bf, size_t len, uint32_t hash)
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{
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const uint8_t *s = bf;
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while (len-- != 0) /* "nemesi": k=257, r=r*257 */
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hash = hash * 257 + *s++;
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return (hash * 257);
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}
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#endif /* __HAVE_HASH32_BUF */
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#ifndef __HAVE_HASH32_STR /* not overridden by MD hash */
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#define HASH32_STR_INIT 5381
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/*
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* uint32_t
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* hash32_str(const void *bf, uint32_t hash)
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* return a 32 bit hash of NUL terminated ASCII string buf,
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* seeded with an initial hash value of hash (usually HASH32_STR_INIT).
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*/
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static __inline uint32_t
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hash32_str(const void *bf, uint32_t hash)
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{
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const uint8_t *s = bf;
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uint8_t c;
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while ((c = *s++) != 0)
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hash = hash * 33 + c; /* "perl": k=33, r=r+r/32 */
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return (hash + (hash >> 5));
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}
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/*
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* uint32_t
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* hash32_strn(const void *bf, size_t len, uint32_t hash)
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* return a 32 bit hash of NUL terminated ASCII string buf up to
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* a maximum of len bytes,
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* seeded with an initial hash value of hash (usually HASH32_STR_INIT).
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*/
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static __inline uint32_t
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hash32_strn(const void *bf, size_t len, uint32_t hash)
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{
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const uint8_t *s = bf;
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uint8_t c;
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while ((c = *s++) != 0 && len-- != 0)
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hash = hash * 33 + c; /* "perl": k=33, r=r+r/32 */
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return (hash + (hash >> 5));
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}
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#endif /* __HAVE_HASH32_STR */
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#endif /* !_SYS_HASH_H_ */
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