1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_SH_STRING_H
3 #define __ASM_SH_STRING_H
4
5 /*
6 * Copyright (C) 1999 Niibe Yutaka
7 * But consider these trivial functions to be public domain.
8 */
9
10 #define __HAVE_ARCH_STRCPY
11 static inline char *strcpy(char *__dest, const char *__src)
12 {
13 register char *__xdest = __dest;
14 unsigned long __dummy;
15
16 __asm__ __volatile__("1:\n\t"
17 "mov.b @%1+, %2\n\t"
18 "mov.b %2, @%0\n\t"
19 "cmp/eq #0, %2\n\t"
20 "bf/s 1b\n\t"
21 " add #1, %0\n\t"
22 : "=r" (__dest), "=r" (__src), "=&z" (__dummy)
23 : "" (__dest), "1" (__src)
24 : "memory", "t");
25
26 return __xdest;
27 }
28
29 #define __HAVE_ARCH_STRCMP
30 static inline int strcmp(const char *__cs, const char *__ct)
31 {
32 register int __res;
33 unsigned long __dummy;
34
35 __asm__ __volatile__(
36 "mov.b @%1+, %3\n"
37 "1:\n\t"
38 "mov.b @%0+, %2\n\t"
39 "cmp/eq #0, %3\n\t"
40 "bt 2f\n\t"
41 "cmp/eq %2, %3\n\t"
42 "bt/s 1b\n\t"
43 " mov.b @%1+, %3\n\t"
44 "add #-2, %1\n\t"
45 "mov.b @%1, %3\n\t"
46 "sub %3, %2\n"
47 "2:"
48 : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
49 : "" (__cs), "1" (__ct)
50 : "t");
51
52 return __res;
53 }
54
55 #define __HAVE_ARCH_STRNCMP
56 static inline int strncmp(const char *__cs, const char *__ct, size_t __n)
57 {
58 register int __res;
59 unsigned long __dummy;
60
61 if (__n == 0)
62 return 0;
63
64 __asm__ __volatile__(
65 "mov.b @%1+, %3\n"
66 "1:\n\t"
67 "mov.b @%0+, %2\n\t"
68 "cmp/eq %6, %0\n\t"
69 "bt/s 2f\n\t"
70 " cmp/eq #0, %3\n\t"
71 "bt/s 3f\n\t"
72 " cmp/eq %3, %2\n\t"
73 "bt/s 1b\n\t"
74 " mov.b @%1+, %3\n\t"
75 "add #-2, %1\n\t"
76 "mov.b @%1, %3\n"
77 "2:\n\t"
78 "sub %3, %2\n"
79 "3:"
80 :"=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
81 : "" (__cs), "1" (__ct), "r" (__cs+__n)
82 : "t");
83
84 return __res;
85 }
86
87 #define __HAVE_ARCH_MEMSET
88 extern void *memset(void *__s, int __c, size_t __count);
89
90 #define __HAVE_ARCH_MEMCPY
91 extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
92
93 #define __HAVE_ARCH_MEMMOVE
94 extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
95
96 #define __HAVE_ARCH_MEMCHR
97 extern void *memchr(const void *__s, int __c, size_t __n);
98
99 #define __HAVE_ARCH_STRLEN
100 extern size_t strlen(const char *);
101
102 #endif /* __ASM_SH_STRING_H */
103
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