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freebsd-dev/sys/i386/include/endian.h

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Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
/*
* Copyright (c) 1987, 1991 Regents of the University of California.
* 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.
*
Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some minor cleanup. Added $Id$ to files that did not have any version info, etc
1993-10-16 14:40:57 +00:00
* from: @(#)endian.h 7.8 (Berkeley) 4/3/91
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
*/
Made all header files idempotent and moved incorrect common data from headers into a related source file. Added cons.h as first step towards moving i386/i386/cons.h to machine/cons.h where it belongs.
1993-11-07 17:43:17 +00:00
#ifndef _MACHINE_ENDIAN_H_
Relax the constraints on the bswap opcode (it works on non-byte registers.) Also clean up some namespace pollution, and remove gcc-1 support (nothing really works with it anymore anyway.) Submitted by: Bruce Evans <bde@freebsd.org> and me.
1996-11-29 16:22:22 +00:00
#define _MACHINE_ENDIAN_H_
Made all header files idempotent and moved incorrect common data from headers into a related source file. Added cons.h as first step towards moving i386/i386/cons.h to machine/cons.h where it belongs.
1993-11-07 17:43:17 +00:00
adding libc/quad: added _QUAD_HIGH/LOW added (U_)QUAD_MAX/MIN (from NetBSD)
1993-12-19 05:14:46 +00:00
/*
* Define the order of 32-bit words in 64-bit words.
*/
#define _QUAD_HIGHWORD 1
#define _QUAD_LOWWORD 0
Fixed linting of and compilation of the gcc byte-swapping macros properly. Simply don't use the gcc macros if we're not gcc, and declare prototypes for the byte-swapping functions in case the macro versions are not used. The previous fix was wrong and broke libpcap, which abuses -Dlint. Don't pollute the namespace if _POSIX_SOURCE is defined. This is broken - it makes almost everything in <machine/endian.h> inaccessible if _POSIX_SOURCE is defined, yet <machine/endian.h> is not a POSIX header. Other systems don't do it any better. Removed always-false `BYTE_ORDER == BIG_ENDIAN' ifdef. Obtained from: partly from Lite(2?) and NetBSD
1997-04-20 11:44:32 +00:00
#ifndef _POSIX_SOURCE
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
/*
* Definitions for byte order, according to byte significance from low
* address to high.
*/
#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */
#define BYTE_ORDER LITTLE_ENDIAN
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
1999-12-29 04:46:21 +00:00
#ifndef _KERNEL
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
#include <sys/cdefs.h>
#endif
o Remove some GCCisms in src/powerpc/include/endian.h. o Unify <machine/endian.h>'s across all architectures. o Make bswapXX() functions use a different spelling of u_int16_t and friends to reduce namespace pollution. The bswapXX() functions don't actually exist, but we'll probably import these at some point. Atleast one driver (if_de) depends on bswapXX() for big endian cases. o Deprecate byteorder(3) prototypes from <sys/types.h>, these are now prototyped indirectly in <arpa/inet.h>. o Deprecate in_addr_t and in_port_t typedefs in <sys/types.h>, these are now typedef'd in <arpa/inet.h>. o Change byteorder(3) prototypes to use standards compliant uint32_t (spelled __uint32_t to reduce namespace pollution). o Document new preferred headers and standards compliance. Discussed with: bde PR: 29946 Reviewed by: bmilekic
2001-08-30 00:04:19 +00:00
#include <machine/ansi.h>
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
Fixed linting of and compilation of the gcc byte-swapping macros properly. Simply don't use the gcc macros if we're not gcc, and declare prototypes for the byte-swapping functions in case the macro versions are not used. The previous fix was wrong and broke libpcap, which abuses -Dlint. Don't pollute the namespace if _POSIX_SOURCE is defined. This is broken - it makes almost everything in <machine/endian.h> inaccessible if _POSIX_SOURCE is defined, yet <machine/endian.h> is not a POSIX header. Other systems don't do it any better. Removed always-false `BYTE_ORDER == BIG_ENDIAN' ifdef. Obtained from: partly from Lite(2?) and NetBSD
1997-04-20 11:44:32 +00:00
__BEGIN_DECLS
o Remove some GCCisms in src/powerpc/include/endian.h. o Unify <machine/endian.h>'s across all architectures. o Make bswapXX() functions use a different spelling of u_int16_t and friends to reduce namespace pollution. The bswapXX() functions don't actually exist, but we'll probably import these at some point. Atleast one driver (if_de) depends on bswapXX() for big endian cases. o Deprecate byteorder(3) prototypes from <sys/types.h>, these are now prototyped indirectly in <arpa/inet.h>. o Deprecate in_addr_t and in_port_t typedefs in <sys/types.h>, these are now typedef'd in <arpa/inet.h>. o Change byteorder(3) prototypes to use standards compliant uint32_t (spelled __uint32_t to reduce namespace pollution). o Document new preferred headers and standards compliance. Discussed with: bde PR: 29946 Reviewed by: bmilekic
2001-08-30 00:04:19 +00:00
__uint32_t htonl(__uint32_t);
__uint16_t htons(__uint16_t);
__uint32_t ntohl(__uint32_t);
__uint16_t ntohs(__uint16_t);
Fixed linting of and compilation of the gcc byte-swapping macros properly. Simply don't use the gcc macros if we're not gcc, and declare prototypes for the byte-swapping functions in case the macro versions are not used. The previous fix was wrong and broke libpcap, which abuses -Dlint. Don't pollute the namespace if _POSIX_SOURCE is defined. This is broken - it makes almost everything in <machine/endian.h> inaccessible if _POSIX_SOURCE is defined, yet <machine/endian.h> is not a POSIX header. Other systems don't do it any better. Removed always-false `BYTE_ORDER == BIG_ENDIAN' ifdef. Obtained from: partly from Lite(2?) and NetBSD
1997-04-20 11:44:32 +00:00
__END_DECLS
Move __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16 inside __GNUC__. Reviewed by: bde
2000-10-16 17:06:48 +00:00
#ifdef __GNUC__
o Remove some GCCisms in src/powerpc/include/endian.h. o Unify <machine/endian.h>'s across all architectures. o Make bswapXX() functions use a different spelling of u_int16_t and friends to reduce namespace pollution. The bswapXX() functions don't actually exist, but we'll probably import these at some point. Atleast one driver (if_de) depends on bswapXX() for big endian cases. o Deprecate byteorder(3) prototypes from <sys/types.h>, these are now prototyped indirectly in <arpa/inet.h>. o Deprecate in_addr_t and in_port_t typedefs in <sys/types.h>, these are now typedef'd in <arpa/inet.h>. o Change byteorder(3) prototypes to use standards compliant uint32_t (spelled __uint32_t to reduce namespace pollution). o Document new preferred headers and standards compliance. Discussed with: bde PR: 29946 Reviewed by: bmilekic
2001-08-30 00:04:19 +00:00
static __inline __uint32_t
__uint16_swap_uint32(__uint32_t __x)
Redefine __word_swap_long, __byte_swap_long and __byte_swap_word as inline functions, renaming them to __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16. Doing it properly suggested by: msmith Reviewed by: msmith
2000-10-15 00:45:19 +00:00
{
Remove namespace polution (x -> __x) introduced in the last revision. Pointed out by: bde
2000-10-15 19:31:24 +00:00
__asm ("rorl $16, %1" : "=r" (__x) : "0" (__x));
Relax the constraints on the bswap opcode (it works on non-byte registers.) Also clean up some namespace pollution, and remove gcc-1 support (nothing really works with it anymore anyway.) Submitted by: Bruce Evans <bde@freebsd.org> and me.
1996-11-29 16:22:22 +00:00
Remove namespace polution (x -> __x) introduced in the last revision. Pointed out by: bde
2000-10-15 19:31:24 +00:00
return __x;
Redefine __word_swap_long, __byte_swap_long and __byte_swap_word as inline functions, renaming them to __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16. Doing it properly suggested by: msmith Reviewed by: msmith
2000-10-15 00:45:19 +00:00
}
Relax the constraints on the bswap opcode (it works on non-byte registers.) Also clean up some namespace pollution, and remove gcc-1 support (nothing really works with it anymore anyway.) Submitted by: Bruce Evans <bde@freebsd.org> and me.
1996-11-29 16:22:22 +00:00
o Remove some GCCisms in src/powerpc/include/endian.h. o Unify <machine/endian.h>'s across all architectures. o Make bswapXX() functions use a different spelling of u_int16_t and friends to reduce namespace pollution. The bswapXX() functions don't actually exist, but we'll probably import these at some point. Atleast one driver (if_de) depends on bswapXX() for big endian cases. o Deprecate byteorder(3) prototypes from <sys/types.h>, these are now prototyped indirectly in <arpa/inet.h>. o Deprecate in_addr_t and in_port_t typedefs in <sys/types.h>, these are now typedef'd in <arpa/inet.h>. o Change byteorder(3) prototypes to use standards compliant uint32_t (spelled __uint32_t to reduce namespace pollution). o Document new preferred headers and standards compliance. Discussed with: bde PR: 29946 Reviewed by: bmilekic
2001-08-30 00:04:19 +00:00
static __inline __uint32_t
__uint8_swap_uint32(__uint32_t __x)
Redefine __word_swap_long, __byte_swap_long and __byte_swap_word as inline functions, renaming them to __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16. Doing it properly suggested by: msmith Reviewed by: msmith
2000-10-15 00:45:19 +00:00
{
#if defined(_KERNEL) && (defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)) && !defined(I386_CPU)
Remove namespace polution (x -> __x) introduced in the last revision. Pointed out by: bde
2000-10-15 19:31:24 +00:00
__asm ("bswap %0" : "=r" (__x) : "0" (__x));
Support the appropriate use of bswap instruction on non-I386 builds. Per Wayne Scott of Intel, the old sequence took 20cycles!!! on a P6. Another nice side-benefit is that the kernel is about 3K smaller!!! Submitted by: Wayne Scott <wscott@ichips.intel.com>
1996-11-29 07:04:03 +00:00
#else
Whitespace fixes so thre 386 versoion of __uint8_swap_uint32 is easier to read.
2001-11-28 17:10:57 +00:00
__asm ("xchgb %h1, %b1\n\t"
"rorl $16, %1\n\t"
"xchgb %h1, %b1"
: "=q" (__x) : "0" (__x));
Support the appropriate use of bswap instruction on non-I386 builds. Per Wayne Scott of Intel, the old sequence took 20cycles!!! on a P6. Another nice side-benefit is that the kernel is about 3K smaller!!! Submitted by: Wayne Scott <wscott@ichips.intel.com>
1996-11-29 07:04:03 +00:00
#endif
Remove namespace polution (x -> __x) introduced in the last revision. Pointed out by: bde
2000-10-15 19:31:24 +00:00
return __x;
Redefine __word_swap_long, __byte_swap_long and __byte_swap_word as inline functions, renaming them to __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16. Doing it properly suggested by: msmith Reviewed by: msmith
2000-10-15 00:45:19 +00:00
}
Relax the constraints on the bswap opcode (it works on non-byte registers.) Also clean up some namespace pollution, and remove gcc-1 support (nothing really works with it anymore anyway.) Submitted by: Bruce Evans <bde@freebsd.org> and me.
1996-11-29 16:22:22 +00:00
o Remove some GCCisms in src/powerpc/include/endian.h. o Unify <machine/endian.h>'s across all architectures. o Make bswapXX() functions use a different spelling of u_int16_t and friends to reduce namespace pollution. The bswapXX() functions don't actually exist, but we'll probably import these at some point. Atleast one driver (if_de) depends on bswapXX() for big endian cases. o Deprecate byteorder(3) prototypes from <sys/types.h>, these are now prototyped indirectly in <arpa/inet.h>. o Deprecate in_addr_t and in_port_t typedefs in <sys/types.h>, these are now typedef'd in <arpa/inet.h>. o Change byteorder(3) prototypes to use standards compliant uint32_t (spelled __uint32_t to reduce namespace pollution). o Document new preferred headers and standards compliance. Discussed with: bde PR: 29946 Reviewed by: bmilekic
2001-08-30 00:04:19 +00:00
static __inline __uint16_t
__uint8_swap_uint16(__uint16_t __x)
Redefine __word_swap_long, __byte_swap_long and __byte_swap_word as inline functions, renaming them to __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16. Doing it properly suggested by: msmith Reviewed by: msmith
2000-10-15 00:45:19 +00:00
{
Remove namespace polution (x -> __x) introduced in the last revision. Pointed out by: bde
2000-10-15 19:31:24 +00:00
__asm ("xchgb %h1, %b1" : "=q" (__x) : "0" (__x));
Redefine __word_swap_long, __byte_swap_long and __byte_swap_word as inline functions, renaming them to __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16. Doing it properly suggested by: msmith Reviewed by: msmith
2000-10-15 00:45:19 +00:00
Remove namespace polution (x -> __x) introduced in the last revision. Pointed out by: bde
2000-10-15 19:31:24 +00:00
return __x;
Redefine __word_swap_long, __byte_swap_long and __byte_swap_word as inline functions, renaming them to __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16. Doing it properly suggested by: msmith Reviewed by: msmith
2000-10-15 00:45:19 +00:00
}
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
/*
* Macros for network/external number representation conversion.
*/
Redefine __word_swap_long, __byte_swap_long and __byte_swap_word as inline functions, renaming them to __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16. Doing it properly suggested by: msmith Reviewed by: msmith
2000-10-15 00:45:19 +00:00
#define ntohl __uint8_swap_uint32
#define ntohs __uint8_swap_uint16
#define htonl __uint8_swap_uint32
#define htons __uint8_swap_uint16
Move __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16 inside __GNUC__. Reviewed by: bde
2000-10-16 17:06:48 +00:00
#endif /* __GNUC__ */
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
Redefine __word_swap_long, __byte_swap_long and __byte_swap_word as inline functions, renaming them to __uint16_swap_uint32, __uint8_swap_uint32 and __uint8_swap_uint16. Doing it properly suggested by: msmith Reviewed by: msmith
2000-10-15 00:45:19 +00:00
#define NTOHL(x) ((x) = ntohl(x))
#define NTOHS(x) ((x) = ntohs(x))
#define HTONL(x) ((x) = htonl(x))
#define HTONS(x) ((x) = htons(x))
Fixed linting of and compilation of the gcc byte-swapping macros properly. Simply don't use the gcc macros if we're not gcc, and declare prototypes for the byte-swapping functions in case the macro versions are not used. The previous fix was wrong and broke libpcap, which abuses -Dlint. Don't pollute the namespace if _POSIX_SOURCE is defined. This is broken - it makes almost everything in <machine/endian.h> inaccessible if _POSIX_SOURCE is defined, yet <machine/endian.h> is not a POSIX header. Other systems don't do it any better. Removed always-false `BYTE_ORDER == BIG_ENDIAN' ifdef. Obtained from: partly from Lite(2?) and NetBSD
1997-04-20 11:44:32 +00:00
#endif /* ! _POSIX_SOURCE */
Relax the constraints on the bswap opcode (it works on non-byte registers.) Also clean up some namespace pollution, and remove gcc-1 support (nothing really works with it anymore anyway.) Submitted by: Bruce Evans <bde@freebsd.org> and me.
1996-11-29 16:22:22 +00:00
#endif /* !_MACHINE_ENDIAN_H_ */
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