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
|
/* This file is part of the program psim.
Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _SIM_ENDIAN_C_
#define _SIM_ENDIAN_C_
#include "sim-basics.h"
#include "sim-assert.h"
#include "sim-io.h"
#if !defined(_SWAP_1)
#define _SWAP_1(SET,RAW) SET (RAW)
#endif
#if !defined(_SWAP_2) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htons)
#define _SWAP_2(SET,RAW) SET htons (RAW)
#endif
#ifndef _SWAP_2
#define _SWAP_2(SET,RAW) SET (((RAW) >> 8) | ((RAW) << 8))
#endif
#if !defined(_SWAP_4) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htonl)
#define _SWAP_4(SET,RAW) SET htonl (RAW)
#endif
#ifndef _SWAP_4
#define _SWAP_4(SET,RAW) SET (((RAW) << 24) | (((RAW) & 0xff00) << 8) | (((RAW) & 0xff0000) >> 8) | ((RAW) >> 24))
#endif
#ifndef _SWAP_8
#define _SWAP_8(SET,RAW) \
union { unsigned_8 dword; unsigned_4 words[2]; } in, out; \
in.dword = RAW; \
_SWAP_4 (out.words[0] =, in.words[1]); \
_SWAP_4 (out.words[1] =, in.words[0]); \
SET out.dword;
#endif
#ifndef _SWAP_16
#define _SWAP_16(SET,RAW) \
union { unsigned_16 word; unsigned_4 words[4]; } in, out; \
in.word = (RAW); \
_SWAP_4 (out.words[0] =, in.words[3]); \
_SWAP_4 (out.words[1] =, in.words[2]); \
_SWAP_4 (out.words[2] =, in.words[1]); \
_SWAP_4 (out.words[3] =, in.words[0]); \
SET out.word;
#endif
#define N 1
#include "sim-n-endian.h"
#undef N
#define N 2
#include "sim-n-endian.h"
#undef N
#define N 4
#include "sim-n-endian.h"
#undef N
#define N 8
#include "sim-n-endian.h"
#undef N
#define N 16
#include "sim-n-endian.h"
#undef N
INLINE_SIM_ENDIAN\
(unsigned_8)
sim_endian_split_16 (unsigned_16 word, int w)
{
if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
{
return word.a[1 - w];
}
else
{
return word.a[w];
}
}
INLINE_SIM_ENDIAN\
(unsigned_16)
sim_endian_join_16 (unsigned_8 h, unsigned_8 l)
{
unsigned_16 word;
if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN)
{
word.a[0] = l;
word.a[1] = h;
}
else
{
word.a[0] = h;
word.a[1] = l;
}
return word;
}
#endif /* _SIM_ENDIAN_C_ */
|
