blob: af09e17000fc125b77e1e511897d7d93c1b907e3 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _M68KNOMMU_STRING_H_
2#define _M68KNOMMU_STRING_H_
3
4#ifdef __KERNEL__ /* only set these up for kernel code */
5
6#include <asm/setup.h>
7#include <asm/page.h>
8
9#define __HAVE_ARCH_STRCPY
10static inline char * strcpy(char * dest,const char *src)
11{
12 char *xdest = dest;
13
14 __asm__ __volatile__
15 ("1:\tmoveb %1@+,%0@+\n\t"
16 "jne 1b"
17 : "=a" (dest), "=a" (src)
18 : "0" (dest), "1" (src) : "memory");
19 return xdest;
20}
21
22#define __HAVE_ARCH_STRNCPY
23static inline char * strncpy(char *dest, const char *src, size_t n)
24{
25 char *xdest = dest;
26
27 if (n == 0)
28 return xdest;
29
30 __asm__ __volatile__
31 ("1:\tmoveb %1@+,%0@+\n\t"
32 "jeq 2f\n\t"
33 "subql #1,%2\n\t"
34 "jne 1b\n\t"
35 "2:"
36 : "=a" (dest), "=a" (src), "=d" (n)
37 : "0" (dest), "1" (src), "2" (n)
38 : "memory");
39 return xdest;
40}
41
42
43#ifndef CONFIG_COLDFIRE
44
45#define __HAVE_ARCH_STRCMP
46static inline int strcmp(const char * cs,const char * ct)
47{
48 char __res;
49
50 __asm__
51 ("1:\tmoveb %0@+,%2\n\t" /* get *cs */
52 "cmpb %1@+,%2\n\t" /* compare a byte */
53 "jne 2f\n\t" /* not equal, break out */
54 "tstb %2\n\t" /* at end of cs? */
55 "jne 1b\n\t" /* no, keep going */
56 "jra 3f\n\t" /* strings are equal */
57 "2:\tsubb %1@-,%2\n\t" /* *cs - *ct */
58 "3:"
59 : "=a" (cs), "=a" (ct), "=d" (__res)
60 : "0" (cs), "1" (ct));
61
62 return __res;
63}
64
65#define __HAVE_ARCH_STRNCMP
66static inline int strncmp(const char * cs,const char * ct,size_t count)
67{
68 char __res;
69
70 if (!count)
71 return 0;
72 __asm__
73 ("1:\tmovb %0@+,%3\n\t" /* get *cs */
74 "cmpb %1@+,%3\n\t" /* compare a byte */
75 "jne 3f\n\t" /* not equal, break out */
76 "tstb %3\n\t" /* at end of cs? */
77 "jeq 4f\n\t" /* yes, all done */
78 "subql #1,%2\n\t" /* no, adjust count */
79 "jne 1b\n\t" /* more to do, keep going */
80 "2:\tmoveq #0,%3\n\t" /* strings are equal */
81 "jra 4f\n\t"
82 "3:\tsubb %1@-,%3\n\t" /* *cs - *ct */
83 "4:"
84 : "=a" (cs), "=a" (ct), "=d" (count), "=d" (__res)
85 : "0" (cs), "1" (ct), "2" (count));
86 return __res;
87}
88
89#endif /* CONFIG_COLDFIRE */
90
91#define __HAVE_ARCH_MEMSET
92extern void * memset(void * s, int c, size_t count);
93
94#define __HAVE_ARCH_MEMCPY
95extern void * memcpy(void *d, const void *s, size_t count);
96
97#else /* KERNEL */
98
99/*
100 * let user libraries deal with these,
101 * IMHO the kernel has no place defining these functions for user apps
102 */
103
104#define __HAVE_ARCH_STRCPY 1
105#define __HAVE_ARCH_STRNCPY 1
106#define __HAVE_ARCH_STRCAT 1
107#define __HAVE_ARCH_STRNCAT 1
108#define __HAVE_ARCH_STRCMP 1
109#define __HAVE_ARCH_STRNCMP 1
110#define __HAVE_ARCH_STRNICMP 1
111#define __HAVE_ARCH_STRCHR 1
112#define __HAVE_ARCH_STRRCHR 1
113#define __HAVE_ARCH_STRSTR 1
114#define __HAVE_ARCH_STRLEN 1
115#define __HAVE_ARCH_STRNLEN 1
116#define __HAVE_ARCH_MEMSET 1
117#define __HAVE_ARCH_MEMCPY 1
118#define __HAVE_ARCH_MEMMOVE 1
119#define __HAVE_ARCH_MEMSCAN 1
120#define __HAVE_ARCH_MEMCMP 1
121#define __HAVE_ARCH_MEMCHR 1
122#define __HAVE_ARCH_STRTOK 1
123
124#endif /* KERNEL */
125
126#endif /* _M68K_STRING_H_ */