This source file includes following definitions.
- strcpy
- strncpy
- strcmp
- strncmp
1
2
3
4
5
6
7
8
9
10 #ifndef _ASM_STRING_H
11 #define _ASM_STRING_H
12
13
14
15
16
17
18 #ifdef CONFIG_32BIT
19
20 #ifndef IN_STRING_C
21
22 #define __HAVE_ARCH_STRCPY
23 static __inline__ char *strcpy(char *__dest, __const__ char *__src)
24 {
25 char *__xdest = __dest;
26
27 __asm__ __volatile__(
28 ".set\tnoreorder\n\t"
29 ".set\tnoat\n"
30 "1:\tlbu\t$1,(%1)\n\t"
31 "addiu\t%1,1\n\t"
32 "sb\t$1,(%0)\n\t"
33 "bnez\t$1,1b\n\t"
34 "addiu\t%0,1\n\t"
35 ".set\tat\n\t"
36 ".set\treorder"
37 : "=r" (__dest), "=r" (__src)
38 : "0" (__dest), "1" (__src)
39 : "memory");
40
41 return __xdest;
42 }
43
44 #define __HAVE_ARCH_STRNCPY
45 static __inline__ char *strncpy(char *__dest, __const__ char *__src, size_t __n)
46 {
47 char *__xdest = __dest;
48
49 if (__n == 0)
50 return __xdest;
51
52 __asm__ __volatile__(
53 ".set\tnoreorder\n\t"
54 ".set\tnoat\n"
55 "1:\tlbu\t$1,(%1)\n\t"
56 "subu\t%2,1\n\t"
57 "sb\t$1,(%0)\n\t"
58 "beqz\t$1,2f\n\t"
59 "addiu\t%0,1\n\t"
60 "bnez\t%2,1b\n\t"
61 "addiu\t%1,1\n"
62 "2:\n\t"
63 ".set\tat\n\t"
64 ".set\treorder"
65 : "=r" (__dest), "=r" (__src), "=r" (__n)
66 : "0" (__dest), "1" (__src), "2" (__n)
67 : "memory");
68
69 return __xdest;
70 }
71
72 #define __HAVE_ARCH_STRCMP
73 static __inline__ int strcmp(__const__ char *__cs, __const__ char *__ct)
74 {
75 int __res;
76
77 __asm__ __volatile__(
78 ".set\tnoreorder\n\t"
79 ".set\tnoat\n\t"
80 "lbu\t%2,(%0)\n"
81 "1:\tlbu\t$1,(%1)\n\t"
82 "addiu\t%0,1\n\t"
83 "bne\t$1,%2,2f\n\t"
84 "addiu\t%1,1\n\t"
85 "bnez\t%2,1b\n\t"
86 "lbu\t%2,(%0)\n\t"
87 #if defined(CONFIG_CPU_R3000)
88 "nop\n\t"
89 #endif
90 "move\t%2,$1\n"
91 "2:\tsubu\t%2,$1\n"
92 "3:\t.set\tat\n\t"
93 ".set\treorder"
94 : "=r" (__cs), "=r" (__ct), "=r" (__res)
95 : "0" (__cs), "1" (__ct));
96
97 return __res;
98 }
99
100 #endif
101
102 #define __HAVE_ARCH_STRNCMP
103 static __inline__ int
104 strncmp(__const__ char *__cs, __const__ char *__ct, size_t __count)
105 {
106 int __res;
107
108 __asm__ __volatile__(
109 ".set\tnoreorder\n\t"
110 ".set\tnoat\n"
111 "1:\tlbu\t%3,(%0)\n\t"
112 "beqz\t%2,2f\n\t"
113 "lbu\t$1,(%1)\n\t"
114 "subu\t%2,1\n\t"
115 "bne\t$1,%3,3f\n\t"
116 "addiu\t%0,1\n\t"
117 "bnez\t%3,1b\n\t"
118 "addiu\t%1,1\n"
119 "2:\n\t"
120 #if defined(CONFIG_CPU_R3000)
121 "nop\n\t"
122 #endif
123 "move\t%3,$1\n"
124 "3:\tsubu\t%3,$1\n\t"
125 ".set\tat\n\t"
126 ".set\treorder"
127 : "=r" (__cs), "=r" (__ct), "=r" (__count), "=r" (__res)
128 : "0" (__cs), "1" (__ct), "2" (__count));
129
130 return __res;
131 }
132 #endif
133
134 #define __HAVE_ARCH_MEMSET
135 extern void *memset(void *__s, int __c, size_t __count);
136
137 #define __HAVE_ARCH_MEMCPY
138 extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
139
140 #define __HAVE_ARCH_MEMMOVE
141 extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
142
143 #endif