aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-sh/string.h
blob: 3e0cff04caec8c32adb8c4bcda7a9f209243377d (plain)
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
#ifndef __ASM_SH_STRING_H
#define __ASM_SH_STRING_H

/*
 * Copyright (C) 1999 Niibe Yutaka
 * But consider these trivial functions to be public domain.
 */

#define __HAVE_ARCH_STRCPY
static __inline__ char *strcpy(char *__dest, const char *__src)
{
	register char *__xdest = __dest;
	unsigned long __dummy;

	__asm__ __volatile__("1:\n\t"
			     "mov.b	@%1+, %2\n\t"
			     "mov.b	%2, @%0\n\t"
			     "cmp/eq	#0, %2\n\t"
			     "bf/s	1b\n\t"
			     " add	#1, %0\n\t"
			     : "=r" (__dest), "=r" (__src), "=&z" (__dummy)
			     : "0" (__dest), "1" (__src)
			     : "memory", "t");

	return __xdest;
}

#define __HAVE_ARCH_STRNCPY
static __inline__ char *strncpy(char *__dest, const char *__src, size_t __n)
{
	register char *__xdest = __dest;
	unsigned long __dummy;

	if (__n == 0)
		return __xdest;

	__asm__ __volatile__(
		"1:\n"
		"mov.b	@%1+, %2\n\t"
		"mov.b	%2, @%0\n\t"
		"cmp/eq	#0, %2\n\t"
		"bt/s	2f\n\t"
		" cmp/eq	%5,%1\n\t"
		"bf/s	1b\n\t"
		" add	#1, %0\n"
		"2:"
		: "=r" (__dest), "=r" (__src), "=&z" (__dummy)
		: "0" (__dest), "1" (__src), "r" (__src+__n)
		: "memory", "t");

	return __xdest;
}

#define __HAVE_ARCH_STRCMP
static __inline__ int strcmp(const char *__cs, const char *__ct)
{
	register int __res;
	unsigned long __dummy;

	__asm__ __volatile__(
		"mov.b	@%1+, %3\n"
		"1:\n\t"
		"mov.b	@%0+, %2\n\t"
		"cmp/eq #0, %3\n\t"
		"bt	2f\n\t"
		"cmp/eq %2, %3\n\t"
		"bt/s	1b\n\t"
		" mov.b	@%1+, %3\n\t"
		"add	#-2, %1\n\t"
		"mov.b	@%1, %3\n\t"
		"sub	%3, %2\n"
		"2:"
		: "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
		: "0" (__cs), "1" (__ct)
		: "t");

	return __res;
}

#define __HAVE_ARCH_STRNCMP
static __inline__ int strncmp(const char *__cs, const char *__ct, size_t __n)
{
	register int __res;
	unsigned long __dummy;

	if (__n == 0)
		return 0;

	__asm__ __volatile__(
		"mov.b	@%1+, %3\n"
		"1:\n\t"
		"mov.b	@%0+, %2\n\t"
		"cmp/eq %6, %0\n\t"
		"bt/s	2f\n\t"
		" cmp/eq #0, %3\n\t"
		"bt/s	3f\n\t"
		" cmp/eq %3, %2\n\t"
		"bt/s	1b\n\t"
		" mov.b	@%1+, %3\n\t"
		"add	#-2, %1\n\t"
		"mov.b	@%1, %3\n"
		"2:\n\t"
		"sub	%3, %2\n"
		"3:"
		:"=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
		: "0" (__cs), "1" (__ct), "r" (__cs+__n)
		: "t");

	return __res;
}

#define __HAVE_ARCH_MEMSET
extern void *memset(void *__s, int __c, size_t __count);

#define __HAVE_ARCH_MEMCPY
extern void *memcpy(void *__to, __const__ void *__from, size_t __n);

#define __HAVE_ARCH_MEMMOVE
extern void *memmove(void *__dest, __const__ void *__src, size_t __n);

#define __HAVE_ARCH_MEMCHR
extern void *memchr(const void *__s, int __c, size_t __n);

#define __HAVE_ARCH_STRLEN
extern size_t strlen(const char *);

#endif /* __ASM_SH_STRING_H */