12490Sjkh/* SPDX-License-Identifier: GPL-2.0 */
274528Sru#ifndef __ASM_SH_STRING_H
32490Sjkh#define __ASM_SH_STRING_H
478174Sru
588058Sru/*
6203923Suqs * Copyright (C) 1999 Niibe Yutaka
7219177Snwhitehorn * But consider these trivial functions to be public domain.
8 */
9
10#define __HAVE_ARCH_STRCPY
11static 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			     : "0" (__dest), "1" (__src)
24			     : "memory", "t");
25
26	return __xdest;
27}
28
29#define __HAVE_ARCH_STRCMP
30static 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		: "0" (__cs), "1" (__ct)
50		: "t");
51
52	return __res;
53}
54
55#define __HAVE_ARCH_STRNCMP
56static 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		: "0" (__cs), "1" (__ct), "r" (__cs+__n)
82		: "t");
83
84	return __res;
85}
86
87#define __HAVE_ARCH_MEMSET
88extern void *memset(void *__s, int __c, size_t __count);
89
90#define __HAVE_ARCH_MEMCPY
91extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
92
93#define __HAVE_ARCH_MEMMOVE
94extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
95
96#define __HAVE_ARCH_MEMCHR
97extern void *memchr(const void *__s, int __c, size_t __n);
98
99#define __HAVE_ARCH_STRLEN
100extern size_t strlen(const char *);
101
102#endif /* __ASM_SH_STRING_H */
103