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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #ifndef _SIM_ENDIAN_C_ | |
23 | #define _SIM_ENDIAN_C_ | |
24 | ||
25 | #include "sim-basics.h" | |
26 | #include "sim-assert.h" | |
27 | #include "sim-io.h" | |
28 | ||
29 | ||
30 | #if !defined(_SWAP_1) | |
31 | #define _SWAP_1(SET,RAW) SET (RAW) | |
32 | #endif | |
33 | ||
34 | #if !defined(_SWAP_2) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htons) | |
35 | #define _SWAP_2(SET,RAW) SET htons (RAW) | |
36 | #endif | |
37 | ||
38 | #ifndef _SWAP_2 | |
39 | #define _SWAP_2(SET,RAW) SET (((RAW) >> 8) | ((RAW) << 8)) | |
40 | #endif | |
41 | ||
42 | #if !defined(_SWAP_4) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htonl) | |
43 | #define _SWAP_4(SET,RAW) SET htonl (RAW) | |
44 | #endif | |
45 | ||
46 | #ifndef _SWAP_4 | |
47 | #define _SWAP_4(SET,RAW) SET (((RAW) << 24) | (((RAW) & 0xff00) << 8) | (((RAW) & 0xff0000) >> 8) | ((RAW) >> 24)) | |
48 | #endif | |
49 | ||
50 | #ifndef _SWAP_8 | |
51 | #define _SWAP_8(SET,RAW) \ | |
52 | union { unsigned_8 dword; unsigned_4 words[2]; } in, out; \ | |
53 | in.dword = RAW; \ | |
54 | _SWAP_4 (out.words[0] =, in.words[1]); \ | |
55 | _SWAP_4 (out.words[1] =, in.words[0]); \ | |
56 | SET out.dword; | |
57 | #endif | |
58 | ||
59 | #ifndef _SWAP_16 | |
60 | #define _SWAP_16(SET,RAW) \ | |
61 | union { unsigned_16 word; unsigned_4 words[4]; } in, out; \ | |
62 | in.word = (RAW); \ | |
63 | _SWAP_4 (out.words[0] =, in.words[3]); \ | |
64 | _SWAP_4 (out.words[1] =, in.words[2]); \ | |
65 | _SWAP_4 (out.words[2] =, in.words[1]); \ | |
66 | _SWAP_4 (out.words[3] =, in.words[0]); \ | |
67 | SET out.word; | |
68 | #endif | |
69 | ||
70 | ||
71 | #define N 1 | |
72 | #include "sim-n-endian.h" | |
73 | #undef N | |
74 | ||
75 | #define N 2 | |
76 | #include "sim-n-endian.h" | |
77 | #undef N | |
78 | ||
79 | #define N 4 | |
80 | #include "sim-n-endian.h" | |
81 | #undef N | |
82 | ||
83 | #define N 8 | |
84 | #include "sim-n-endian.h" | |
85 | #undef N | |
86 | ||
87 | #define N 16 | |
88 | #include "sim-n-endian.h" | |
89 | #undef N | |
90 | ||
91 | ||
92 | INLINE_SIM_ENDIAN\ | |
93 | (unsigned_8) | |
94 | sim_endian_split_16 (unsigned_16 word, int w) | |
95 | { | |
96 | if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) | |
97 | { | |
98 | return word.a[1 - w]; | |
99 | } | |
100 | else | |
101 | { | |
102 | return word.a[w]; | |
103 | } | |
104 | } | |
105 | ||
106 | ||
107 | INLINE_SIM_ENDIAN\ | |
108 | (unsigned_16) | |
109 | sim_endian_join_16 (unsigned_8 h, unsigned_8 l) | |
110 | ||
111 | { | |
112 | unsigned_16 word; | |
113 | if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) | |
114 | { | |
115 | word.a[0] = l; | |
116 | word.a[1] = h; | |
117 | } | |
118 | else | |
119 | { | |
120 | word.a[0] = h; | |
121 | word.a[1] = l; | |
122 | } | |
123 | return word; | |
124 | } | |
125 | ||
126 | ||
127 | ||
128 | #endif /* _SIM_ENDIAN_C_ */ |