summaryrefslogblamecommitdiff
path: root/include/asm-sh/bitops-grb.h
blob: a5907b94395beee0cdfb88e39f8d53a56302efcf (plain) (tree) 
1efe4ce3ca12 ^









































































































































































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









































































































































































                                                                               
#ifndef __ASM_SH_BITOPS_GRB_H
#define __ASM_SH_BITOPS_GRB_H

static inline void set_bit(int nr, volatile void * addr)
{
	int	mask;
	volatile unsigned int *a = addr;
	unsigned long tmp;

	a += nr >> 5;
	mask = 1 << (nr & 0x1f);

        __asm__ __volatile__ (
                "   .align 2              \n\t"
                "   mova    1f,   r0      \n\t" /* r0 = end point */
                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
                "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
                "   mov.l  @%1,   %0      \n\t" /* load  old value */
                "   or      %2,   %0      \n\t" /* or */
                "   mov.l   %0,   @%1     \n\t" /* store new value */
                "1: mov     r1,   r15     \n\t" /* LOGOUT */
                : "=&r" (tmp),
                  "+r"  (a)
                : "r"   (mask)
                : "memory" , "r0", "r1");
}

static inline void clear_bit(int nr, volatile void * addr)
{
	int	mask;
	volatile unsigned int *a = addr;
        unsigned long tmp;

	a += nr >> 5;
        mask = ~(1 << (nr & 0x1f));
        __asm__ __volatile__ (
                "   .align 2              \n\t"
                "   mova    1f,   r0      \n\t" /* r0 = end point */
                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
                "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
                "   mov.l  @%1,   %0      \n\t" /* load  old value */
                "   and     %2,   %0      \n\t" /* and */
                "   mov.l   %0,   @%1     \n\t" /* store new value */
                "1: mov     r1,   r15     \n\t" /* LOGOUT */
                : "=&r" (tmp),
                  "+r"  (a)
                : "r"   (mask)
                : "memory" , "r0", "r1");
}

static inline void change_bit(int nr, volatile void * addr)
{
        int     mask;
        volatile unsigned int *a = addr;
        unsigned long tmp;

        a += nr >> 5;
        mask = 1 << (nr & 0x1f);
        __asm__ __volatile__ (
                "   .align 2              \n\t"
                "   mova    1f,   r0      \n\t" /* r0 = end point */
                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
                "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
                "   mov.l  @%1,   %0      \n\t" /* load  old value */
                "   xor     %2,   %0      \n\t" /* xor */
                "   mov.l   %0,   @%1     \n\t" /* store new value */
                "1: mov     r1,   r15     \n\t" /* LOGOUT */
                : "=&r" (tmp),
                  "+r"  (a)
                : "r"   (mask)
                : "memory" , "r0", "r1");
}

static inline int test_and_set_bit(int nr, volatile void * addr)
{
        int     mask, retval;
	volatile unsigned int *a = addr;
        unsigned long tmp;

	a += nr >> 5;
	mask = 1 << (nr & 0x1f);

        __asm__ __volatile__ (
                "   .align 2              \n\t"
                "   mova    1f,   r0      \n\t" /* r0 = end point */
                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
                "   mov   #-14,   r15     \n\t" /* LOGIN: r15 = size */
                "   mov.l  @%2,   %0      \n\t" /* load old value */
                "   mov     %0,   %1      \n\t"
                "   tst     %1,   %3      \n\t" /* T = ((*a & mask) == 0) */
                "   mov    #-1,   %1      \n\t" /* retvat = -1 */
                "   negc    %1,   %1      \n\t" /* retval = (mask & *a) != 0 */
                "   or      %3,   %0      \n\t"
                "   mov.l   %0,  @%2      \n\t" /* store new value */
                "1: mov     r1,  r15      \n\t" /* LOGOUT */
                : "=&r" (tmp),
                  "=&r" (retval),
                  "+r"  (a)
                : "r"   (mask)
                : "memory" , "r0", "r1" ,"t");

        return retval;
}

static inline int test_and_clear_bit(int nr, volatile void * addr)
{
        int     mask, retval,not_mask;
        volatile unsigned int *a = addr;
        unsigned long tmp;

        a += nr >> 5;
        mask = 1 << (nr & 0x1f);

	not_mask = ~mask;

        __asm__ __volatile__ (
                "   .align 2              \n\t"
		"   mova    1f,   r0      \n\t" /* r0 = end point */
                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
		"   mov   #-14,   r15     \n\t" /* LOGIN */
		"   mov.l  @%2,   %0      \n\t" /* load old value */
                "   mov     %0,   %1      \n\t" /* %1 = *a */
                "   tst     %1,   %3      \n\t" /* T = ((*a & mask) == 0) */
		"   mov    #-1,   %1      \n\t" /* retvat = -1 */
                "   negc    %1,   %1      \n\t" /* retval = (mask & *a) != 0 */
                "   and     %4,   %0      \n\t"
                "   mov.l   %0,  @%2      \n\t" /* store new value */
		"1: mov     r1,   r15     \n\t" /* LOGOUT */
		: "=&r" (tmp),
		  "=&r" (retval),
		  "+r"  (a)
		: "r"   (mask),
		  "r"   (not_mask)
		: "memory" , "r0", "r1", "t");

        return retval;
}

static inline int test_and_change_bit(int nr, volatile void * addr)
{
        int     mask, retval;
        volatile unsigned int *a = addr;
        unsigned long tmp;

        a += nr >> 5;
        mask = 1 << (nr & 0x1f);

        __asm__ __volatile__ (
                "   .align 2              \n\t"
                "   mova    1f,   r0      \n\t" /* r0 = end point */
                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
                "   mov   #-14,   r15     \n\t" /* LOGIN */
                "   mov.l  @%2,   %0      \n\t" /* load old value */
                "   mov     %0,   %1      \n\t" /* %1 = *a */
                "   tst     %1,   %3      \n\t" /* T = ((*a & mask) == 0) */
                "   mov    #-1,   %1      \n\t" /* retvat = -1 */
                "   negc    %1,   %1      \n\t" /* retval = (mask & *a) != 0 */
                "   xor     %3,   %0      \n\t"
                "   mov.l   %0,  @%2      \n\t" /* store new value */
                "1: mov     r1,   r15     \n\t" /* LOGOUT */
                : "=&r" (tmp),
                  "=&r" (retval),
                  "+r"  (a)
                : "r"   (mask)
                : "memory" , "r0", "r1", "t");

        return retval;
}
#endif /* __ASM_SH_BITOPS_GRB_H */