1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright (c) 2015, Joyent, Inc.
*/
.file "byteorder.s"
#include "SYS.h"
/*
* NOTE: htonl/ntohl are identical routines, as are htons/ntohs.
* As such, they could be implemented as a single routine, using
* multiple ALTENTRY/SET_SIZE definitions. We don't do this so
* that they will have unique addresses, allowing DTrace and
* other debuggers to tell them apart. With the endian
* functions we do the same, even though it's similarly
* repetitive.
*/
/ unsigned long htonl( hl )
/ unsigned long ntohl( hl )
/ long hl;
/ reverses the byte order of 'long hl'
/
ENTRY(htonl)
movl 4(%esp), %eax / %eax = hl
bswap %eax / reverses the byte order of %eax
ret / return (%eax)
SET_SIZE(htonl)
ENTRY(ntohl)
movl 4(%esp), %eax / %eax = hl
bswap %eax / reverses the byte order of %eax
ret / return (%eax)
SET_SIZE(ntohl)
/ unsigned short htons( hs )
/ short hs;
/
/ reverses the byte order in hs.
/
ENTRY(htons)
movl 4(%esp), %eax / %eax = hs
bswap %eax / reverses the byte order of %eax
shrl $16, %eax / moves high 16-bit to low 16-bit
ret / return (%eax)
SET_SIZE(htons)
ENTRY(ntohs)
movl 4(%esp), %eax / %eax = hs
bswap %eax / reverses the byte order of %eax
shrl $16, %eax / moves high 16-bit to low 16-bit
ret / return (%eax)
SET_SIZE(ntohs)
/ uint16_t htobe16(uint16_t in)
/
/ Convert in to big endian, eg. htons()
/
ENTRY(htobe16)
movl 4(%esp), %eax / %eax = hs
bswap %eax / reverses the byte order of %eax
shrl $16, %eax / moves high 16-bit to low 16-bit
ret / return (%eax)
SET_SIZE(htobe16)
/ uint32_t htobe32(uint32_t in)
/
/ Convert in to big endian, eg. htonl()
/
ENTRY(htobe32)
movl 4(%esp), %eax / %eax = hl
bswap %eax / reverses the byte order of %eax
ret / return (%eax)
SET_SIZE(htobe32)
/ uint16_t betoh16(uint16_t in)
/ uint16_t be16toh(uint16_t in)
/
/ Convert in to little endian, eg. ntohs()
/
ENTRY(betoh16)
movl 4(%esp), %eax / %eax = hs
bswap %eax / reverses the byte order of %eax
shrl $16, %eax / moves high 16-bit to low 16-bit
ret / return (%eax)
SET_SIZE(betoh16)
ENTRY(be16toh)
movl 4(%esp), %eax / %eax = hs
bswap %eax / reverses the byte order of %eax
shrl $16, %eax / moves high 16-bit to low 16-bit
ret / return (%eax)
SET_SIZE(be16toh)
/ uint32_t be32toh(uint32_t in)
/ uint32_t betoh32(uint32_t in)
/
/ Convert in to little endian, eg. ntohl()
/
ENTRY(be32toh)
movl 4(%esp), %eax / %eax = hl
bswap %eax / reverses the byte order of %eax
ret / return (%eax)
SET_SIZE(be32toh)
ENTRY(betoh32)
movl 4(%esp), %eax / %eax = hl
bswap %eax / reverses the byte order of %eax
ret / return (%eax)
SET_SIZE(betoh32)
|