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NetBSD/sys/arch/pc532/include/byte_swap.h

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Move the bswap functions from libutil to libc (this bups the minor of libc and the major of libutil). For little-endian architectures merge the bnswap() assembly versions with nto* and hton* using symbols aliasing. Use symbol renaming for the bswap function in this case to avoid namespace pollution. Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian machines, common code for inline macros go in machine/byte_swap.h Sync libkern with libc. Adjust #include in kernel sources for machine/bswap.h.
1999-01-15 16:31:15 +03:00
/* $NetBSD: byte_swap.h,v 1.1 1999/01/15 13:31:26 bouyer Exp $ */
RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in <machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS define not LIBC_SCCS
1997-07-16 18:37:13 +04:00
Move the bswap functions from libutil to libc (this bups the minor of libc and the major of libutil). For little-endian architectures merge the bnswap() assembly versions with nto* and hton* using symbols aliasing. Use symbol renaming for the bswap function in this case to avoid namespace pollution. Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian machines, common code for inline macros go in machine/byte_swap.h Sync libkern with libc. Adjust #include in kernel sources for machine/bswap.h.
1999-01-15 16:31:15 +03:00
/*
* Copyright (c) 1987, 1991 Regents of the University of California.
make an arch directory in libc, and move all machine dirs into it
1993-10-07 03:17:24 +03:00
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change th LIBC_RCS, the entire source tree should be updated at once. Remove && !defined(lint) from conditionals around rcs id's. No one is ever going to pass a *.s file through lint.
1993-10-21 04:39:55 +03:00
*
Move the bswap functions from libutil to libc (this bups the minor of libc and the major of libutil). For little-endian architectures merge the bnswap() assembly versions with nto* and hton* using symbols aliasing. Use symbol renaming for the bswap function in this case to avoid namespace pollution. Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian machines, common code for inline macros go in machine/byte_swap.h Sync libkern with libc. Adjust #include in kernel sources for machine/bswap.h.
1999-01-15 16:31:15 +03:00
* @(#)endian.h 7.8 (Berkeley) 4/3/91
make an arch directory in libc, and move all machine dirs into it
1993-10-07 03:17:24 +03:00
*/
Move the bswap functions from libutil to libc (this bups the minor of libc and the major of libutil). For little-endian architectures merge the bnswap() assembly versions with nto* and hton* using symbols aliasing. Use symbol renaming for the bswap function in this case to avoid namespace pollution. Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian machines, common code for inline macros go in machine/byte_swap.h Sync libkern with libc. Adjust #include in kernel sources for machine/bswap.h.
1999-01-15 16:31:15 +03:00
#ifndef _PC532_BYTE_SWAP_H_
#define _PC532_BYTE_SWAP_H_
#define __byte_swap_long_variable(x) __extension__ \
({ register u_int32_t __x = (x); \
__asm ("rotw 8,%1; rotd 16,%1; rotw 8,%1" \
: "=r" (__x) \
: "0" (__x)); \
__x; })
#define __byte_swap_word_variable(x) __extension__ \
({ register u_int16_t __x = (x); \
__asm ("rotw 8,%1" \
: "=r" (__x) \
: "0" (__x)); \
__x; })
#ifdef __OPTIMIZE__
#define __byte_swap_long_constant(x) \
((((x) & 0xff000000) >> 24) | \
(((x) & 0x00ff0000) >> 8) | \
(((x) & 0x0000ff00) << 8) | \
(((x) & 0x000000ff) << 24))
#define __byte_swap_word_constant(x) \
((((x) & 0xff00) >> 8) | \
(((x) & 0x00ff) << 8))
#define __byte_swap_long(x) \
(__builtin_constant_p((x)) ? \
__byte_swap_long_constant(x) : __byte_swap_long_variable(x))
#define __byte_swap_word(x) \
(__builtin_constant_p((x)) ? \
__byte_swap_word_constant(x) : __byte_swap_word_variable(x))
#else /* __OPTIMIZE__ */
#define __byte_swap_long(x) __byte_swap_long_variable(x)
#define __byte_swap_word(x) __byte_swap_word_variable(x)
#endif /* __OPTIMIZE__ */
#endif /* _PC532_BYTE_SWAP_H_ */