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[deliverable/binutils-gdb.git] / sim / common / sim-bits.c
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1/* This file is part of the program psim.
2
3 Copyright (C) 1994-1997, 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_BITS_C_
23#define _SIM_BITS_C_
24
25#include "sim-basics.h"
d11d59ac 26#include "sim-assert.h"
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27
28INLINE_SIM_BITS\
29(unsigned_word)
30MASKED(unsigned_word val,
31 unsigned start,
32 unsigned stop)
33{
34 return ((val) & MASK(start, stop));
35}
36
37
38
39INLINE_SIM_BITS\
40(unsigned_word)
41LSMASKED(unsigned_word val,
42 unsigned nr_bits)
43{
44 return MASKED(val,
45 WITH_TARGET_WORD_BITSIZE - nr_bits,
46 WITH_TARGET_WORD_BITSIZE - 1);
47}
48
49
50
51INLINE_SIM_BITS\
52(unsigned_word)
53EXTRACTED(unsigned_word val,
54 unsigned start,
55 unsigned stop)
56{
57 ASSERT(start <= stop);
58#if (WITH_TARGET_WORD_BITSIZE == 64)
59 return EXTRACTED64(val, start, stop);
60#endif
61#if (WITH_TARGET_WORD_BITSIZE == 32)
62 if (stop < 32)
63 return 0;
64 else
65 return ((val >> (63 - stop))
66 & MASK(start+(63-stop), 63));
67#endif
68}
69
70
71INLINE_SIM_BITS\
72(unsigned_word)
73INSERTED(unsigned_word val,
74 unsigned start,
75 unsigned stop)
76{
77 ASSERT(start <= stop);
78#if (WITH_TARGET_WORD_BITSIZE == 64)
79 return INSERTED64(val, start, stop);
80#endif
81#if (WITH_TARGET_WORD_BITSIZE == 32)
82 if (stop < 32)
83 return 0;
84 else
85 return ((val & MASK(start+(63-stop), 63))
86 << (63 - stop));
87#endif
88}
89
90
91
92
93#define N 16
94#include "sim-n-bits.h"
95#undef N
96
97#define N 32
98#include "sim-n-bits.h"
99#undef N
100
101#define N 64
102#include "sim-n-bits.h"
103#undef N
104
105#endif /* _SIM_BITS_C_ */
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