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7#ifndef _S390_STRING_H_
8#define _S390_STRING_H_
9
10#ifndef _LINUX_TYPES_H
11#include <linux/types.h>
12#endif
13
14#define __HAVE_ARCH_MEMCHR
15#define __HAVE_ARCH_MEMCMP
16#define __HAVE_ARCH_MEMCPY
17#define __HAVE_ARCH_MEMSCAN
18#define __HAVE_ARCH_MEMSET
19#define __HAVE_ARCH_STRCAT
20#define __HAVE_ARCH_STRCMP
21#define __HAVE_ARCH_STRCPY
22#define __HAVE_ARCH_STRLCAT
23#define __HAVE_ARCH_STRLCPY
24#define __HAVE_ARCH_STRLEN
25#define __HAVE_ARCH_STRNCAT
26#define __HAVE_ARCH_STRNCPY
27#define __HAVE_ARCH_STRNLEN
28#define __HAVE_ARCH_STRRCHR
29#define __HAVE_ARCH_STRSTR
30
31
32extern int memcmp(const void *, const void *, size_t);
33extern void *memcpy(void *, const void *, size_t);
34extern void *memset(void *, int, size_t);
35extern int strcmp(const char *,const char *);
36extern size_t strlcat(char *, const char *, size_t);
37extern size_t strlcpy(char *, const char *, size_t);
38extern char *strncat(char *, const char *, size_t);
39extern char *strncpy(char *, const char *, size_t);
40extern char *strrchr(const char *, int);
41extern char *strstr(const char *, const char *);
42
43#undef __HAVE_ARCH_MEMMOVE
44#undef __HAVE_ARCH_STRCHR
45#undef __HAVE_ARCH_STRNCHR
46#undef __HAVE_ARCH_STRNCMP
47#undef __HAVE_ARCH_STRPBRK
48#undef __HAVE_ARCH_STRSEP
49#undef __HAVE_ARCH_STRSPN
50
51#if !defined(IN_ARCH_STRING_C)
52
53static inline void *memchr(const void * s, int c, size_t n)
54{
55 register int r0 asm("0") = (char) c;
56 const void *ret = s + n;
57
58 asm volatile(
59 "0: srst %0,%1\n"
60 " jo 0b\n"
61 " jl 1f\n"
62 " la %0,0\n"
63 "1:"
64 : "+a" (ret), "+&a" (s) : "d" (r0) : "cc");
65 return (void *) ret;
66}
67
68static inline void *memscan(void *s, int c, size_t n)
69{
70 register int r0 asm("0") = (char) c;
71 const void *ret = s + n;
72
73 asm volatile(
74 "0: srst %0,%1\n"
75 " jo 0b\n"
76 : "+a" (ret), "+&a" (s) : "d" (r0) : "cc");
77 return (void *) ret;
78}
79
80static inline char *strcat(char *dst, const char *src)
81{
82 register int r0 asm("0") = 0;
83 unsigned long dummy;
84 char *ret = dst;
85
86 asm volatile(
87 "0: srst %0,%1\n"
88 " jo 0b\n"
89 "1: mvst %0,%2\n"
90 " jo 1b"
91 : "=&a" (dummy), "+a" (dst), "+a" (src)
92 : "d" (r0), "0" (0) : "cc", "memory" );
93 return ret;
94}
95
96static inline char *strcpy(char *dst, const char *src)
97{
98 register int r0 asm("0") = 0;
99 char *ret = dst;
100
101 asm volatile(
102 "0: mvst %0,%1\n"
103 " jo 0b"
104 : "+&a" (dst), "+&a" (src) : "d" (r0)
105 : "cc", "memory");
106 return ret;
107}
108
109static inline size_t strlen(const char *s)
110{
111 register unsigned long r0 asm("0") = 0;
112 const char *tmp = s;
113
114 asm volatile(
115 "0: srst %0,%1\n"
116 " jo 0b"
117 : "+d" (r0), "+a" (tmp) : : "cc");
118 return r0 - (unsigned long) s;
119}
120
121static inline size_t strnlen(const char * s, size_t n)
122{
123 register int r0 asm("0") = 0;
124 const char *tmp = s;
125 const char *end = s + n;
126
127 asm volatile(
128 "0: srst %0,%1\n"
129 " jo 0b"
130 : "+a" (end), "+a" (tmp) : "d" (r0) : "cc");
131 return end - s;
132}
133#else
134void *memchr(const void * s, int c, size_t n);
135void *memscan(void *s, int c, size_t n);
136char *strcat(char *dst, const char *src);
137char *strcpy(char *dst, const char *src);
138size_t strlen(const char *s);
139size_t strnlen(const char * s, size_t n);
140#endif
141
142#endif
143