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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 (c) 1994, by Sun Microsytems, Inc.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "libtnf.h"
/*
*
*/
#define CHECK_SCALAR(datum) check_scalar(datum)
#define DATUM_NATIVE(x) DATUM_TNF(datum)->file_native
/*
*
*/
static void check_scalar(tnf_datum_t);
static tnf_uint64_t get_uint64(TNF *tnf, caddr_t val);
/*
*
*/
static void
check_scalar(tnf_datum_t datum)
{
CHECK_DATUM(datum);
if (!INFO_SCALAR(DATUM_INFO(datum)))
_tnf_error(DATUM_TNF(datum), TNF_ERR_TYPEMISMATCH);
/* XXX Need to check for exact scalar type match as well */
}
/*
* Exported scalar operations
*/
/* No swapping required: */
char
tnf_get_char(tnf_datum_t datum)
{
CHECK_SCALAR(datum);
return (*(char *)DATUM_VAL(datum));
}
tnf_int8_t
tnf_get_int8(tnf_datum_t datum)
{
CHECK_SCALAR(datum);
return (*(tnf_int8_t *)DATUM_VAL(datum));
}
tnf_int16_t
tnf_get_int16(tnf_datum_t datum)
{
tnf_int16_t val;
CHECK_SCALAR(datum);
/* LINTED pointer cast may result in improper alignment */
val = *(tnf_int16_t *)DATUM_VAL(datum);
return (DATUM_NATIVE(datum) ? val : _tnf_swap16(val));
}
/* 32-bit integers: */
tnf_int32_t
tnf_get_int32(tnf_datum_t datum)
{
CHECK_SCALAR(datum);
/* LINTED pointer cast may result in improper alignment */
return (_GET_INT32(DATUM_TNF(datum), DATUM_VAL(datum)));
}
/* 64-bit integers: */
static tnf_uint64_t
get_uint64(TNF *tnf, caddr_t val)
{
tnf_uint32_t hi32, lo32; /* XXX both assumed unsigned */
/* XXX Can't rely on address alignment */
/* LINTED pointer cast may result in improper alignment */
hi32 = *(tnf_uint32_t *)val;
/* LINTED pointer cast may result in improper alignment */
lo32 = *(tnf_uint32_t *)(val + sizeof (tnf_uint32_t));
#ifdef _LONG_LONG_HTOL
/* eg. sparc */
if (tnf->file_native)
return ((((tnf_uint64_t)hi32) << 32)
+ (tnf_uint64_t)lo32);
else
/* XXX Assume words are swapped as well: */
return ((((tnf_uint64_t)_tnf_swap32(lo32)) << 32)
+ (tnf_uint64_t)_tnf_swap32(hi32));
#else
/* eg. i386 */
if (tnf->file_native)
return ((((tnf_uint64_t)lo32) << 32)
+ (tnf_uint64_t)hi32);
else
/* XXX Assume words are swapped as well: */
return ((((tnf_uint64_t)_tnf_swap32(hi32)) << 32)
+ (tnf_uint64_t)_tnf_swap32(lo32));
#endif
}
tnf_int64_t
tnf_get_int64(tnf_datum_t datum)
{
CHECK_SCALAR(datum);
return (get_uint64(DATUM_TNF(datum), DATUM_VAL(datum)));
}
/* floats: */
tnf_float32_t
tnf_get_float32(tnf_datum_t datum)
{
union {
tnf_uint32_t i32;
tnf_float32_t f32;
} u;
CHECK_SCALAR(datum);
/* LINTED pointer cast may result in improper alignment */
u.i32 = _GET_UINT32(DATUM_TNF(datum), DATUM_VAL(datum)); /* XXX */
return (u.f32);
}
tnf_float64_t
tnf_get_float64(tnf_datum_t datum)
{
union {
tnf_uint64_t i64;
tnf_float64_t f64;
} u;
CHECK_SCALAR(datum);
u.i64 = get_uint64(DATUM_TNF(datum), DATUM_VAL(datum)); /* XXX */
return (u.f64);
}
|
