1
2#ifndef _PARISC_BITOPS_H
3#define _PARISC_BITOPS_H
4
5#ifndef _LINUX_BITOPS_H
6#error only <linux/bitops.h> can be included directly
7#endif
8
9#include <linux/compiler.h>
10#include <asm/types.h>
11#include <asm/byteorder.h>
12#include <asm/barrier.h>
13#include <linux/atomic.h>
14
15
16
17
18
19
20
21static __inline__ void set_bit(int nr, volatile unsigned long * addr)
22{
23 unsigned long mask = BIT_MASK(nr);
24 unsigned long flags;
25
26 addr += BIT_WORD(nr);
27 _atomic_spin_lock_irqsave(addr, flags);
28 *addr |= mask;
29 _atomic_spin_unlock_irqrestore(addr, flags);
30}
31
32static __inline__ void clear_bit(int nr, volatile unsigned long * addr)
33{
34 unsigned long mask = BIT_MASK(nr);
35 unsigned long flags;
36
37 addr += BIT_WORD(nr);
38 _atomic_spin_lock_irqsave(addr, flags);
39 *addr &= ~mask;
40 _atomic_spin_unlock_irqrestore(addr, flags);
41}
42
43static __inline__ void change_bit(int nr, volatile unsigned long * addr)
44{
45 unsigned long mask = BIT_MASK(nr);
46 unsigned long flags;
47
48 addr += BIT_WORD(nr);
49 _atomic_spin_lock_irqsave(addr, flags);
50 *addr ^= mask;
51 _atomic_spin_unlock_irqrestore(addr, flags);
52}
53
54static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr)
55{
56 unsigned long mask = BIT_MASK(nr);
57 unsigned long old;
58 unsigned long flags;
59 int set;
60
61 addr += BIT_WORD(nr);
62 _atomic_spin_lock_irqsave(addr, flags);
63 old = *addr;
64 set = (old & mask) ? 1 : 0;
65 if (!set)
66 *addr = old | mask;
67 _atomic_spin_unlock_irqrestore(addr, flags);
68
69 return set;
70}
71
72static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr)
73{
74 unsigned long mask = BIT_MASK(nr);
75 unsigned long old;
76 unsigned long flags;
77 int set;
78
79 addr += BIT_WORD(nr);
80 _atomic_spin_lock_irqsave(addr, flags);
81 old = *addr;
82 set = (old & mask) ? 1 : 0;
83 if (set)
84 *addr = old & ~mask;
85 _atomic_spin_unlock_irqrestore(addr, flags);
86
87 return set;
88}
89
90static __inline__ int test_and_change_bit(int nr, volatile unsigned long * addr)
91{
92 unsigned long mask = BIT_MASK(nr);
93 unsigned long oldbit;
94 unsigned long flags;
95
96 addr += BIT_WORD(nr);
97 _atomic_spin_lock_irqsave(addr, flags);
98 oldbit = *addr;
99 *addr = oldbit ^ mask;
100 _atomic_spin_unlock_irqrestore(addr, flags);
101
102 return (oldbit & mask) ? 1 : 0;
103}
104
105#include <asm-generic/bitops/non-atomic.h>
106
107#ifdef __KERNEL__
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128static __inline__ unsigned long __ffs(unsigned long x)
129{
130 unsigned long ret;
131
132 __asm__(
133#ifdef CONFIG_64BIT
134 " ldi 63,%1\n"
135 " extrd,u,*<> %0,63,32,%%r0\n"
136 " extrd,u,*TR %0,31,32,%0\n"
137 " addi -32,%1,%1\n"
138#else
139 " ldi 31,%1\n"
140#endif
141 " extru,<> %0,31,16,%%r0\n"
142 " extru,TR %0,15,16,%0\n"
143 " addi -16,%1,%1\n"
144 " extru,<> %0,31,8,%%r0\n"
145 " extru,TR %0,23,8,%0\n"
146 " addi -8,%1,%1\n"
147 " extru,<> %0,31,4,%%r0\n"
148 " extru,TR %0,27,4,%0\n"
149 " addi -4,%1,%1\n"
150 " extru,<> %0,31,2,%%r0\n"
151 " extru,TR %0,29,2,%0\n"
152 " addi -2,%1,%1\n"
153 " extru,= %0,31,1,%%r0\n"
154 " addi -1,%1,%1\n"
155 : "+r" (x), "=r" (ret) );
156 return ret;
157}
158
159#include <asm-generic/bitops/ffz.h>
160
161
162
163
164
165
166static __inline__ int ffs(int x)
167{
168 return x ? (__ffs((unsigned long)x) + 1) : 0;
169}
170
171
172
173
174
175
176static __inline__ int fls(unsigned int x)
177{
178 int ret;
179 if (!x)
180 return 0;
181
182 __asm__(
183 " ldi 1,%1\n"
184 " extru,<> %0,15,16,%%r0\n"
185 " zdep,TR %0,15,16,%0\n"
186 " addi 16,%1,%1\n"
187 " extru,<> %0,7,8,%%r0\n"
188 " zdep,TR %0,23,24,%0\n"
189 " addi 8,%1,%1\n"
190 " extru,<> %0,3,4,%%r0\n"
191 " zdep,TR %0,27,28,%0\n"
192 " addi 4,%1,%1\n"
193 " extru,<> %0,1,2,%%r0\n"
194 " zdep,TR %0,29,30,%0\n"
195 " addi 2,%1,%1\n"
196 " extru,= %0,0,1,%%r0\n"
197 " addi 1,%1,%1\n"
198 : "+r" (x), "=r" (ret) );
199
200 return ret;
201}
202
203#include <asm-generic/bitops/__fls.h>
204#include <asm-generic/bitops/fls64.h>
205#include <asm-generic/bitops/hweight.h>
206#include <asm-generic/bitops/lock.h>
207#include <asm-generic/bitops/sched.h>
208
209#endif
210
211#include <asm-generic/bitops/find.h>
212
213#ifdef __KERNEL__
214
215#include <asm-generic/bitops/le.h>
216#include <asm-generic/bitops/ext2-atomic-setbit.h>
217
218#endif
219
220#endif
221