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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 _BITS_C_ | |
23 | #define _BITS_C_ | |
24 | ||
25 | #include "basics.h" | |
26 | ||
5c884464 MG |
27 | INLINE_BITS\ |
28 | (unsigned64) | |
29 | LSMASKED64 (unsigned64 word, | |
30 | int start, | |
31 | int stop) | |
32 | { | |
33 | word &= LSMASK64 (start, stop); | |
34 | return word; | |
35 | } | |
c906108c | 36 | |
5c884464 MG |
37 | INLINE_BITS\ |
38 | (unsigned64) | |
39 | LSEXTRACTED64 (unsigned64 val, | |
40 | int start, | |
41 | int stop) | |
42 | { | |
43 | val <<= (64 - 1 - start); /* drop high bits */ | |
44 | val >>= (64 - 1 - start) + (stop); /* drop low bits */ | |
45 | return val; | |
46 | } | |
47 | ||
c906108c SS |
48 | INLINE_BITS\ |
49 | (unsigned32) | |
50 | MASKED32(unsigned32 word, | |
51 | unsigned start, | |
52 | unsigned stop) | |
53 | { | |
54 | return (word & MASK32(start, stop)); | |
55 | } | |
56 | ||
57 | INLINE_BITS\ | |
58 | (unsigned64) | |
59 | MASKED64(unsigned64 word, | |
60 | unsigned start, | |
61 | unsigned stop) | |
62 | { | |
63 | return (word & MASK64(start, stop)); | |
64 | } | |
65 | ||
66 | INLINE_BITS\ | |
67 | (unsigned_word) | |
68 | MASKED(unsigned_word word, | |
69 | unsigned start, | |
70 | unsigned stop) | |
71 | { | |
72 | return ((word) & MASK(start, stop)); | |
73 | } | |
74 | ||
75 | ||
76 | ||
77 | INLINE_BITS\ | |
78 | (unsigned_word) | |
79 | EXTRACTED(unsigned_word word, | |
80 | unsigned start, | |
81 | unsigned stop) | |
82 | { | |
83 | ASSERT(start <= stop); | |
84 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
85 | return _EXTRACTEDn(64, word, start, stop); | |
86 | #else | |
87 | if (stop < 32) | |
88 | return 0; | |
89 | else | |
90 | return ((word >> (63 - stop)) | |
91 | & MASK(start+(63-stop), 63)); | |
92 | #endif | |
93 | } | |
94 | ||
95 | ||
96 | INLINE_BITS\ | |
97 | (unsigned_word) | |
98 | INSERTED(unsigned_word word, | |
99 | unsigned start, | |
100 | unsigned stop) | |
101 | { | |
102 | ASSERT(start <= stop); | |
103 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
104 | return _INSERTEDn(64, word, start, stop); | |
105 | #else | |
106 | if (stop < 32) | |
107 | return 0; | |
108 | else | |
109 | return ((word & MASK(start+(63-stop), 63)) | |
110 | << (63 - stop)); | |
111 | #endif | |
112 | } | |
113 | ||
114 | ||
115 | INLINE_BITS\ | |
116 | (unsigned32) | |
117 | ROTL32(unsigned32 val, | |
118 | long shift) | |
119 | { | |
120 | ASSERT(shift >= 0 && shift <= 32); | |
121 | return _ROTLn(32, val, shift); | |
122 | } | |
123 | ||
124 | ||
125 | INLINE_BITS\ | |
126 | (unsigned64) | |
127 | ROTL64(unsigned64 val, | |
128 | long shift) | |
129 | { | |
130 | ASSERT(shift >= 0 && shift <= 64); | |
131 | return _ROTLn(64, val, shift); | |
132 | } | |
133 | ||
134 | #endif /* _BITS_C_ */ |