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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
3 | Copyright 2002 Free Software Foundation, Inc. | |
4 | ||
5 | Contributed by Andrew Cagney and Red Hat. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | ||
25 | #ifndef _SIM_ENDIAN_C_ | |
26 | #define _SIM_ENDIAN_C_ | |
27 | ||
28 | #include "sim-basics.h" | |
29 | #include "sim-assert.h" | |
30 | #include "sim-io.h" | |
31 | ||
32 | ||
33 | #if !defined(_SWAP_1) | |
34 | #define _SWAP_1(SET,RAW) SET (RAW) | |
35 | #endif | |
36 | ||
37 | #if !defined(_SWAP_2) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htons) | |
38 | #define _SWAP_2(SET,RAW) SET htons (RAW) | |
39 | #endif | |
40 | ||
41 | #ifndef _SWAP_2 | |
42 | #define _SWAP_2(SET,RAW) SET (((RAW) >> 8) | ((RAW) << 8)) | |
43 | #endif | |
44 | ||
45 | #if !defined(_SWAP_4) && (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) && defined(htonl) | |
46 | #define _SWAP_4(SET,RAW) SET htonl (RAW) | |
47 | #endif | |
48 | ||
49 | #ifndef _SWAP_4 | |
50 | #define _SWAP_4(SET,RAW) SET (((RAW) << 24) | (((RAW) & 0xff00) << 8) | (((RAW) & 0xff0000) >> 8) | ((RAW) >> 24)) | |
51 | #endif | |
52 | ||
53 | #ifndef _SWAP_8 | |
54 | #define _SWAP_8(SET,RAW) \ | |
55 | union { unsigned_8 dword; unsigned_4 words[2]; } in, out; \ | |
56 | in.dword = RAW; \ | |
57 | _SWAP_4 (out.words[0] =, in.words[1]); \ | |
58 | _SWAP_4 (out.words[1] =, in.words[0]); \ | |
59 | SET out.dword; | |
60 | #endif | |
61 | ||
62 | #ifndef _SWAP_16 | |
63 | #define _SWAP_16(SET,RAW) \ | |
64 | union { unsigned_16 word; unsigned_4 words[4]; } in, out; \ | |
65 | in.word = (RAW); \ | |
66 | _SWAP_4 (out.words[0] =, in.words[3]); \ | |
67 | _SWAP_4 (out.words[1] =, in.words[2]); \ | |
68 | _SWAP_4 (out.words[2] =, in.words[1]); \ | |
69 | _SWAP_4 (out.words[3] =, in.words[0]); \ | |
70 | SET out.word; | |
71 | #endif | |
72 | ||
73 | ||
74 | #define N 1 | |
75 | #include "sim-n-endian.h" | |
76 | #undef N | |
77 | ||
78 | #define N 2 | |
79 | #include "sim-n-endian.h" | |
80 | #undef N | |
81 | ||
82 | #define N 4 | |
83 | #include "sim-n-endian.h" | |
84 | #undef N | |
85 | ||
86 | #define N 8 | |
87 | #include "sim-n-endian.h" | |
88 | #undef N | |
89 | ||
90 | #define N 16 | |
91 | #include "sim-n-endian.h" | |
92 | #undef N | |
93 | ||
94 | ||
95 | INLINE_SIM_ENDIAN\ | |
96 | (unsigned_8) | |
97 | sim_endian_split_16 (unsigned_16 word, int w) | |
98 | { | |
99 | if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) | |
100 | { | |
101 | return word.a[1 - w]; | |
102 | } | |
103 | else | |
104 | { | |
105 | return word.a[w]; | |
106 | } | |
107 | } | |
108 | ||
109 | ||
110 | INLINE_SIM_ENDIAN\ | |
111 | (unsigned_16) | |
112 | sim_endian_join_16 (unsigned_8 h, unsigned_8 l) | |
113 | ||
114 | { | |
115 | unsigned_16 word; | |
116 | if (CURRENT_HOST_BYTE_ORDER == LITTLE_ENDIAN) | |
117 | { | |
118 | word.a[0] = l; | |
119 | word.a[1] = h; | |
120 | } | |
121 | else | |
122 | { | |
123 | word.a[0] = h; | |
124 | word.a[1] = l; | |
125 | } | |
126 | return word; | |
127 | } | |
128 | ||
129 | ||
130 | ||
131 | #endif /* _SIM_ENDIAN_C_ */ |