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
340 lines
9 KiB
C
340 lines
9 KiB
C
/* $NetBSD: endian.h,v 1.28 2009/08/08 21:23:15 christos Exp $ */
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/*
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* Copyright (c) 1987, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)endian.h 8.1 (Berkeley) 6/11/93
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*/
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#ifndef _SYS_ENDIAN_H_
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#define _SYS_ENDIAN_H_
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#include <sys/featuretest.h>
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/*
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* Definitions for byte order, according to byte significance from low
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* address to high.
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*/
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#define _LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
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#define _BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
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#define _PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */
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#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
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#ifndef _LOCORE
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/* C-family endian-ness definitions */
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#include <sys/ansi.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#ifndef in_addr_t
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typedef __in_addr_t in_addr_t;
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#define in_addr_t __in_addr_t
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#endif
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#ifndef in_port_t
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typedef __in_port_t in_port_t;
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#define in_port_t __in_port_t
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#endif
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__BEGIN_DECLS
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uint32_t htonl(uint32_t) __constfunc;
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uint16_t htons(uint16_t) __constfunc;
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uint32_t ntohl(uint32_t) __constfunc;
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uint16_t ntohs(uint16_t) __constfunc;
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__END_DECLS
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#endif /* !_LOCORE */
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#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */
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#include <machine/endian_machdep.h>
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/*
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* Define the order of 32-bit words in 64-bit words.
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*/
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#if _BYTE_ORDER == _LITTLE_ENDIAN
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#define _QUAD_HIGHWORD 1
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#define _QUAD_LOWWORD 0
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#endif
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#if _BYTE_ORDER == _BIG_ENDIAN
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#define _QUAD_HIGHWORD 0
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#define _QUAD_LOWWORD 1
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#endif
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#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
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/*
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* Traditional names for byteorder. These are defined as the numeric
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* sequences so that third party code can "#define XXX_ENDIAN" and not
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* cause errors.
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*/
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#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
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#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
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#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */
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#define BYTE_ORDER _BYTE_ORDER
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#ifndef _LOCORE
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#include <machine/bswap.h>
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/*
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* Macros for network/external number representation conversion.
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*/
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#if BYTE_ORDER == BIG_ENDIAN && !defined(__lint__)
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#define ntohl(x) (x)
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#define ntohs(x) (x)
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#define htonl(x) (x)
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#define htons(x) (x)
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#define NTOHL(x) (void) (x)
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#define NTOHS(x) (void) (x)
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#define HTONL(x) (void) (x)
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#define HTONS(x) (void) (x)
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#else /* LITTLE_ENDIAN || !defined(__lint__) */
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#define ntohl(x) bswap32(__CAST(uint32_t, (x)))
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#define ntohs(x) bswap16(__CAST(uint16_t, (x)))
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#define htonl(x) bswap32(__CAST(uint32_t, (x)))
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#define htons(x) bswap16(__CAST(uint16_t, (x)))
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#define NTOHL(x) (x) = ntohl(__CAST(uint32_t, (x)))
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#define NTOHS(x) (x) = ntohs(__CAST(uint16_t, (x)))
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#define HTONL(x) (x) = htonl(__CAST(uint32_t, (x)))
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#define HTONS(x) (x) = htons(__CAST(uint16_t, (x)))
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#endif /* LITTLE_ENDIAN || !defined(__lint__) */
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/*
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* Macros to convert to a specific endianness.
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*/
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#if BYTE_ORDER == BIG_ENDIAN
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#define htobe16(x) (x)
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#define htobe32(x) (x)
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#define htobe64(x) (x)
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#define htole16(x) bswap16(__CAST(uint16_t, (x)))
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#define htole32(x) bswap32(__CAST(uint32_t, (x)))
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#define htole64(x) bswap64(__CAST(uint64_t, (x)))
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#define HTOBE16(x) __CAST(void, (x))
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#define HTOBE32(x) __CAST(void, (x))
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#define HTOBE64(x) __CAST(void, (x))
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#define HTOLE16(x) (x) = bswap16(__CAST(uint16_t, (x)))
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#define HTOLE32(x) (x) = bswap32(__CAST(uint32_t, (x)))
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#define HTOLE64(x) (x) = bswap64(__CAST(uint64_t, (x)))
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#else /* LITTLE_ENDIAN */
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#define htobe16(x) bswap16(__CAST(uint16_t, (x)))
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#define htobe32(x) bswap32(__CAST(uint32_t, (x)))
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#define htobe64(x) bswap64(__CAST(uint64_t, (x)))
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#define htole16(x) (x)
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#define htole32(x) (x)
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#define htole64(x) (x)
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#define HTOBE16(x) (x) = bswap16(__CAST(uint16_t, (x)))
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#define HTOBE32(x) (x) = bswap32(__CAST(uint32_t, (x)))
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#define HTOBE64(x) (x) = bswap64(__CAST(uint64_t, (x)))
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#define HTOLE16(x) __CAST(void, (x))
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#define HTOLE32(x) __CAST(void, (x))
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#define HTOLE64(x) __CAST(void, (x))
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#endif /* LITTLE_ENDIAN */
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#define be16toh(x) htobe16(x)
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#define be32toh(x) htobe32(x)
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#define be64toh(x) htobe64(x)
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#define le16toh(x) htole16(x)
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#define le32toh(x) htole32(x)
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#define le64toh(x) htole64(x)
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#define BE16TOH(x) HTOBE16(x)
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#define BE32TOH(x) HTOBE32(x)
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#define BE64TOH(x) HTOBE64(x)
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#define LE16TOH(x) HTOLE16(x)
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#define LE32TOH(x) HTOLE32(x)
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#define LE64TOH(x) HTOLE64(x)
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/*
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* Routines to encode/decode big- and little-endian multi-octet values
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* to/from an octet stream.
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*/
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#if __GNUC_PREREQ__(2, 95)
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#define __GEN_ENDIAN_ENC(bits, endian) \
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static __inline __unused void \
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endian ## bits ## enc(void *dst, uint ## bits ## _t u) \
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{ \
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u = hto ## endian ## bits (u); \
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__builtin_memcpy(dst, &u, sizeof(u)); \
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}
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__GEN_ENDIAN_ENC(16, be)
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__GEN_ENDIAN_ENC(32, be)
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__GEN_ENDIAN_ENC(64, be)
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__GEN_ENDIAN_ENC(16, le)
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__GEN_ENDIAN_ENC(32, le)
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__GEN_ENDIAN_ENC(64, le)
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#undef __GEN_ENDIAN_ENC
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#define __GEN_ENDIAN_DEC(bits, endian) \
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static __inline __unused uint ## bits ## _t \
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endian ## bits ## dec(const void *buf) \
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{ \
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uint ## bits ## _t u; \
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__builtin_memcpy(&u, buf, sizeof(u)); \
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return endian ## bits ## toh (u); \
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}
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__GEN_ENDIAN_DEC(16, be)
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__GEN_ENDIAN_DEC(32, be)
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__GEN_ENDIAN_DEC(64, be)
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__GEN_ENDIAN_DEC(16, le)
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__GEN_ENDIAN_DEC(32, le)
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__GEN_ENDIAN_DEC(64, le)
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#undef __GEN_ENDIAN_DEC
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#else /* !(GCC >= 2.95) */
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static __inline void __unused
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be16enc(void *buf, uint16_t u)
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{
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uint8_t *p = __CAST(uint8_t *, buf);
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p[0] = __CAST(uint8_t, ((__CAST(unsigned, u) >> 8) & 0xff));
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p[1] = __CAST(uint8_t, (u & 0xff));
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}
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static __inline void __unused
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le16enc(void *buf, uint16_t u)
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{
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uint8_t *p = __CAST(uint8_t *, buf);
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p[0] = __CAST(uint8_t, (u & 0xff));
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p[1] = __CAST(uint8_t, ((__CAST(unsigned, u) >> 8) & 0xff));
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}
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static __inline uint16_t __unused
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be16dec(const void *buf)
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{
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const uint8_t *p = __CAST(const uint8_t *, buf);
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return __CAST(uint16_t, ((p[0] << 8) | p[1]));
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}
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static __inline uint16_t __unused
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le16dec(const void *buf)
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{
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const uint8_t *p = __CAST(const uint8_t *, buf);
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return __CAST(uint16_t, ((p[1] << 8) | p[0]));
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}
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static __inline void __unused
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be32enc(void *buf, uint32_t u)
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{
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uint8_t *p = __CAST(uint8_t *, buf);
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p[0] = __CAST(uint8_t, ((u >> 24) & 0xff));
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p[1] = __CAST(uint8_t, ((u >> 16) & 0xff));
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p[2] = __CAST(uint8_t, ((u >> 8) & 0xff));
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p[3] = __CAST(uint8_t, (u & 0xff));
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}
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static __inline void __unused
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le32enc(void *buf, uint32_t u)
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{
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uint8_t *p = __CAST(uint8_t *, buf);
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p[0] = __CAST(uint8_t, (u & 0xff));
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p[1] = __CAST(uint8_t, ((u >> 8) & 0xff));
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p[2] = __CAST(uint8_t, ((u >> 16) & 0xff));
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p[3] = __CAST(uint8_t, ((u >> 24) & 0xff));
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}
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static __inline uint32_t __unused
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be32dec(const void *buf)
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{
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const uint8_t *p = __CAST(const uint8_t *, buf);
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return ((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]);
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}
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static __inline uint32_t __unused
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le32dec(const void *buf)
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{
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const uint8_t *p = __CAST(const uint8_t *, buf);
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return ((p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]);
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}
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static __inline void __unused
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be64enc(void *buf, uint64_t u)
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{
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uint8_t *p = __CAST(uint8_t *, buf);
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be32enc(p, __CAST(uint32_t, (u >> 32)));
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be32enc(p + 4, __CAST(uint32_t, (u & 0xffffffffULL)));
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}
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static __inline void __unused
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le64enc(void *buf, uint64_t u)
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{
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uint8_t *p = __CAST(uint8_t *, buf);
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le32enc(p, __CAST(uint32_t, (u & 0xffffffffULL)));
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le32enc(p + 4, __CAST(uint32_t, (u >> 32)));
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}
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static __inline uint64_t __unused
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be64dec(const void *buf)
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{
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const uint8_t *p = (const uint8_t *)buf;
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return ((__CAST(uint64_t, be32dec(p)) << 32) | be32dec(p + 4));
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}
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static __inline uint64_t __unused
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le64dec(const void *buf)
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{
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const uint8_t *p = (const uint8_t *)buf;
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return (le32dec(p) | (__CAST(uint64_t, le32dec(p + 4)) << 32));
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}
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#endif /* GCC >= 2.95 */
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#endif /* !_LOCORE */
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#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */
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#endif /* !_SYS_ENDIAN_H_ */
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