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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 | |
3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
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 | |
51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
17 | |
18 | */ | |
19 | ||
20 | ||
21 | #ifndef _BITS_C_ | |
22 | #define _BITS_C_ | |
23 | ||
24 | #include "basics.h" | |
25 | ||
5c884464 MG |
26 | INLINE_BITS\ |
27 | (unsigned64) | |
28 | LSMASKED64 (unsigned64 word, | |
29 | int start, | |
30 | int stop) | |
31 | { | |
32 | word &= LSMASK64 (start, stop); | |
33 | return word; | |
34 | } | |
c906108c | 35 | |
5c884464 MG |
36 | INLINE_BITS\ |
37 | (unsigned64) | |
38 | LSEXTRACTED64 (unsigned64 val, | |
39 | int start, | |
40 | int stop) | |
41 | { | |
42 | val <<= (64 - 1 - start); /* drop high bits */ | |
43 | val >>= (64 - 1 - start) + (stop); /* drop low bits */ | |
44 | return val; | |
45 | } | |
46 | ||
c906108c SS |
47 | INLINE_BITS\ |
48 | (unsigned32) | |
49 | MASKED32(unsigned32 word, | |
50 | unsigned start, | |
51 | unsigned stop) | |
52 | { | |
53 | return (word & MASK32(start, stop)); | |
54 | } | |
55 | ||
56 | INLINE_BITS\ | |
57 | (unsigned64) | |
58 | MASKED64(unsigned64 word, | |
59 | unsigned start, | |
60 | unsigned stop) | |
61 | { | |
62 | return (word & MASK64(start, stop)); | |
63 | } | |
64 | ||
65 | INLINE_BITS\ | |
66 | (unsigned_word) | |
67 | MASKED(unsigned_word word, | |
68 | unsigned start, | |
69 | unsigned stop) | |
70 | { | |
71 | return ((word) & MASK(start, stop)); | |
72 | } | |
73 | ||
74 | ||
75 | ||
76 | INLINE_BITS\ | |
77 | (unsigned_word) | |
78 | EXTRACTED(unsigned_word word, | |
79 | unsigned start, | |
80 | unsigned stop) | |
81 | { | |
82 | ASSERT(start <= stop); | |
83 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
84 | return _EXTRACTEDn(64, word, start, stop); | |
85 | #else | |
86 | if (stop < 32) | |
87 | return 0; | |
88 | else | |
89 | return ((word >> (63 - stop)) | |
90 | & MASK(start+(63-stop), 63)); | |
91 | #endif | |
92 | } | |
93 | ||
94 | ||
95 | INLINE_BITS\ | |
96 | (unsigned_word) | |
97 | INSERTED(unsigned_word word, | |
98 | unsigned start, | |
99 | unsigned stop) | |
100 | { | |
101 | ASSERT(start <= stop); | |
102 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
103 | return _INSERTEDn(64, word, start, stop); | |
104 | #else | |
105 | if (stop < 32) | |
106 | return 0; | |
107 | else | |
108 | return ((word & MASK(start+(63-stop), 63)) | |
109 | << (63 - stop)); | |
110 | #endif | |
111 | } | |
112 | ||
113 | ||
114 | INLINE_BITS\ | |
115 | (unsigned32) | |
116 | ROTL32(unsigned32 val, | |
117 | long shift) | |
118 | { | |
119 | ASSERT(shift >= 0 && shift <= 32); | |
120 | return _ROTLn(32, val, shift); | |
121 | } | |
122 | ||
123 | ||
124 | INLINE_BITS\ | |
125 | (unsigned64) | |
126 | ROTL64(unsigned64 val, | |
127 | long shift) | |
128 | { | |
129 | ASSERT(shift >= 0 && shift <= 64); | |
130 | return _ROTLn(64, val, shift); | |
131 | } | |
132 | ||
133 | #endif /* _BITS_C_ */ |