1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef __ASM_SH_STRING_H
3*4882a593Smuzhiyun #define __ASM_SH_STRING_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun /*
6*4882a593Smuzhiyun * Copyright (C) 1999 Niibe Yutaka
7*4882a593Smuzhiyun * But consider these trivial functions to be public domain.
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #define __HAVE_ARCH_STRCPY
strcpy(char * __dest,const char * __src)11*4882a593Smuzhiyun static inline char *strcpy(char *__dest, const char *__src)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun register char *__xdest = __dest;
14*4882a593Smuzhiyun unsigned long __dummy;
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun __asm__ __volatile__("1:\n\t"
17*4882a593Smuzhiyun "mov.b @%1+, %2\n\t"
18*4882a593Smuzhiyun "mov.b %2, @%0\n\t"
19*4882a593Smuzhiyun "cmp/eq #0, %2\n\t"
20*4882a593Smuzhiyun "bf/s 1b\n\t"
21*4882a593Smuzhiyun " add #1, %0\n\t"
22*4882a593Smuzhiyun : "=r" (__dest), "=r" (__src), "=&z" (__dummy)
23*4882a593Smuzhiyun : "0" (__dest), "1" (__src)
24*4882a593Smuzhiyun : "memory", "t");
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun return __xdest;
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun #define __HAVE_ARCH_STRCMP
strcmp(const char * __cs,const char * __ct)30*4882a593Smuzhiyun static inline int strcmp(const char *__cs, const char *__ct)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun register int __res;
33*4882a593Smuzhiyun unsigned long __dummy;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun __asm__ __volatile__(
36*4882a593Smuzhiyun "mov.b @%1+, %3\n"
37*4882a593Smuzhiyun "1:\n\t"
38*4882a593Smuzhiyun "mov.b @%0+, %2\n\t"
39*4882a593Smuzhiyun "cmp/eq #0, %3\n\t"
40*4882a593Smuzhiyun "bt 2f\n\t"
41*4882a593Smuzhiyun "cmp/eq %2, %3\n\t"
42*4882a593Smuzhiyun "bt/s 1b\n\t"
43*4882a593Smuzhiyun " mov.b @%1+, %3\n\t"
44*4882a593Smuzhiyun "add #-2, %1\n\t"
45*4882a593Smuzhiyun "mov.b @%1, %3\n\t"
46*4882a593Smuzhiyun "sub %3, %2\n"
47*4882a593Smuzhiyun "2:"
48*4882a593Smuzhiyun : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
49*4882a593Smuzhiyun : "0" (__cs), "1" (__ct)
50*4882a593Smuzhiyun : "t");
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun return __res;
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun #define __HAVE_ARCH_STRNCMP
strncmp(const char * __cs,const char * __ct,size_t __n)56*4882a593Smuzhiyun static inline int strncmp(const char *__cs, const char *__ct, size_t __n)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun register int __res;
59*4882a593Smuzhiyun unsigned long __dummy;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun if (__n == 0)
62*4882a593Smuzhiyun return 0;
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun __asm__ __volatile__(
65*4882a593Smuzhiyun "mov.b @%1+, %3\n"
66*4882a593Smuzhiyun "1:\n\t"
67*4882a593Smuzhiyun "mov.b @%0+, %2\n\t"
68*4882a593Smuzhiyun "cmp/eq %6, %0\n\t"
69*4882a593Smuzhiyun "bt/s 2f\n\t"
70*4882a593Smuzhiyun " cmp/eq #0, %3\n\t"
71*4882a593Smuzhiyun "bt/s 3f\n\t"
72*4882a593Smuzhiyun " cmp/eq %3, %2\n\t"
73*4882a593Smuzhiyun "bt/s 1b\n\t"
74*4882a593Smuzhiyun " mov.b @%1+, %3\n\t"
75*4882a593Smuzhiyun "add #-2, %1\n\t"
76*4882a593Smuzhiyun "mov.b @%1, %3\n"
77*4882a593Smuzhiyun "2:\n\t"
78*4882a593Smuzhiyun "sub %3, %2\n"
79*4882a593Smuzhiyun "3:"
80*4882a593Smuzhiyun :"=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
81*4882a593Smuzhiyun : "0" (__cs), "1" (__ct), "r" (__cs+__n)
82*4882a593Smuzhiyun : "t");
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun return __res;
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun
87*4882a593Smuzhiyun #define __HAVE_ARCH_MEMSET
88*4882a593Smuzhiyun extern void *memset(void *__s, int __c, size_t __count);
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun #define __HAVE_ARCH_MEMCPY
91*4882a593Smuzhiyun extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun #define __HAVE_ARCH_MEMMOVE
94*4882a593Smuzhiyun extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun #define __HAVE_ARCH_MEMCHR
97*4882a593Smuzhiyun extern void *memchr(const void *__s, int __c, size_t __n);
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun #define __HAVE_ARCH_STRLEN
100*4882a593Smuzhiyun extern size_t strlen(const char *);
101*4882a593Smuzhiyun
102*4882a593Smuzhiyun #endif /* __ASM_SH_STRING_H */
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