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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/* This file is part of the program psim.
Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
Copyright (C) 1997, Free Software Foundation, Inc.
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 N
#error "N must be #defined"
#endif
#include "symcat.h"
#if defined(__STDC__) && defined(signed)
/* If signed were defined to be say __signed (ie, some versions of Linux),
then the signedN macro would not work correctly. If we have a standard
compiler, we have signed. */
#undef signed
#endif
/* NOTE: See end of file for #undef */
#define unsignedN XCONCAT2(unsigned,N)
#define signedN XCONCAT2(signed,N)
#define LSMASKn XCONCAT2(LSMASK,N)
#define MSMASKn XCONCAT2(MSMASK,N)
#define LSMASKEDn XCONCAT2(LSMASKED,N)
#define MSMASKEDn XCONCAT2(MSMASKED,N)
#define LSEXTRACTEDn XCONCAT2(LSEXTRACTED,N)
#define MSEXTRACTEDn XCONCAT2(MSEXTRACTED,N)
#define LSINSERTEDn XCONCAT2(LSINSERTED,N)
#define MSINSERTEDn XCONCAT2(MSINSERTED,N)
#define ROTn XCONCAT2(ROT,N)
#define ROTLn XCONCAT2(ROTL,N)
#define ROTRn XCONCAT2(ROTR,N)
#define MSSEXTn XCONCAT2(MSSEXT,N)
#define LSSEXTn XCONCAT2(LSSEXT,N)
/* TAGS: LSMASKED16 LSMASKED32 LSMASKED64 */
INLINE_SIM_BITS\
(unsignedN)
LSMASKEDn (unsignedN word,
int start,
int stop)
{
word &= LSMASKn (start, stop);
return word;
}
/* TAGS: MSMASKED16 MSMASKED32 MSMASKED64 */
INLINE_SIM_BITS\
(unsignedN)
MSMASKEDn (unsignedN word,
int start,
int stop)
{
word &= MSMASKn (start, stop);
return word;
}
/* TAGS: LSEXTRACTED16 LSEXTRACTED32 LSEXTRACTED64 */
INLINE_SIM_BITS\
(unsignedN)
LSEXTRACTEDn (unsignedN val,
int start,
int stop)
{
val <<= (N - 1 - start); /* drop high bits */
val >>= (N - 1 - start) + (stop); /* drop low bits */
return val;
}
/* TAGS: MSEXTRACTED16 MSEXTRACTED32 MSEXTRACTED64 */
INLINE_SIM_BITS\
(unsignedN)
MSEXTRACTEDn (unsignedN val,
int start,
int stop)
{
val <<= (start); /* drop high bits */
val >>= (start) + (N - 1 - stop); /* drop low bits */
return val;
}
/* TAGS: LSINSERTED16 LSINSERTED32 LSINSERTED64 */
INLINE_SIM_BITS\
(unsignedN)
LSINSERTEDn (unsignedN val,
int start,
int stop)
{
val <<= stop;
val &= LSMASKn (start, stop);
return val;
}
/* TAGS: MSINSERTED16 MSINSERTED32 MSINSERTED64 */
INLINE_SIM_BITS\
(unsignedN)
MSINSERTEDn (unsignedN val,
int start,
int stop)
{
val <<= ((N - 1) - stop);
val &= MSMASKn (start, stop);
return val;
}
/* TAGS: ROT16 ROT32 ROT64 */
INLINE_SIM_BITS\
(unsignedN)
ROTn (unsignedN val,
int shift)
{
if (shift > 0)
return ROTRn (val, shift);
else if (shift < 0)
return ROTLn (val, -shift);
else
return val;
}
/* TAGS: ROTL16 ROTL32 ROTL64 */
INLINE_SIM_BITS\
(unsignedN)
ROTLn (unsignedN val,
int shift)
{
unsignedN result;
ASSERT (shift <= N);
result = (((val) << (shift)) | ((val) >> ((N)-(shift))));
return result;
}
/* TAGS: ROTR16 ROTR32 ROTR64 */
INLINE_SIM_BITS\
(unsignedN)
ROTRn (unsignedN val,
int shift)
{
unsignedN result;
ASSERT (shift <= N);
result = (((val) >> (shift)) | ((val) << ((N)-(shift))));
return result;
}
/* TAGS: LSSEXT16 LSSEXT32 LSSEXT64 */
INLINE_SIM_BITS\
(unsignedN)
LSSEXTn (signedN val,
int sign_bit)
{
int shift;
/* make the sign-bit most significant and then smear it back into
position */
ASSERT (sign_bit < N);
shift = ((N - 1) - sign_bit);
val <<= shift;
val >>= shift;
return val;
}
/* TAGS: MSSEXT16 MSSEXT32 MSSEXT64 */
INLINE_SIM_BITS\
(unsignedN)
MSSEXTn (signedN val,
int sign_bit)
{
/* make the sign-bit most significant and then smear it back into
position */
ASSERT (sign_bit < N);
val <<= sign_bit;
val >>= sign_bit;
return val;
}
/* NOTE: See start of file for #define */
#undef LSSEXTn
#undef MSSEXTn
#undef ROTLn
#undef ROTRn
#undef ROTn
#undef LSINSERTEDn
#undef MSINSERTEDn
#undef LSEXTRACTEDn
#undef MSEXTRACTEDn
#undef LSMASKEDn
#undef LSMASKn
#undef MSMASKEDn
#undef MSMASKn
#undef signedN
#undef unsignedN
|
