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Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 | 2 | * S390 version |
a53c8fab | 3 | * Copyright IBM Corp. 1999 |
1da177e4 LT |
4 | * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), |
5 | */ | |
6 | ||
7 | #ifndef _S390_STRING_H_ | |
8 | #define _S390_STRING_H_ | |
9 | ||
1da177e4 LT |
10 | #ifndef _LINUX_TYPES_H |
11 | #include <linux/types.h> | |
12 | #endif | |
13 | ||
14 | #define __HAVE_ARCH_MEMCHR /* inline & arch function */ | |
15 | #define __HAVE_ARCH_MEMCMP /* arch function */ | |
16 | #define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */ | |
b4623d4e | 17 | #define __HAVE_ARCH_MEMMOVE /* gcc builtin & arch function */ |
1da177e4 LT |
18 | #define __HAVE_ARCH_MEMSCAN /* inline & arch function */ |
19 | #define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */ | |
20 | #define __HAVE_ARCH_STRCAT /* inline & arch function */ | |
21 | #define __HAVE_ARCH_STRCMP /* arch function */ | |
22 | #define __HAVE_ARCH_STRCPY /* inline & arch function */ | |
23 | #define __HAVE_ARCH_STRLCAT /* arch function */ | |
24 | #define __HAVE_ARCH_STRLCPY /* arch function */ | |
25 | #define __HAVE_ARCH_STRLEN /* inline & arch function */ | |
26 | #define __HAVE_ARCH_STRNCAT /* arch function */ | |
27 | #define __HAVE_ARCH_STRNCPY /* arch function */ | |
28 | #define __HAVE_ARCH_STRNLEN /* inline & arch function */ | |
29 | #define __HAVE_ARCH_STRRCHR /* arch function */ | |
30 | #define __HAVE_ARCH_STRSTR /* arch function */ | |
31 | ||
32 | /* Prototypes for non-inlined arch strings functions. */ | |
33 | extern int memcmp(const void *, const void *, size_t); | |
34 | extern void *memcpy(void *, const void *, size_t); | |
35 | extern void *memset(void *, int, size_t); | |
b4623d4e | 36 | extern void *memmove(void *, const void *, size_t); |
1da177e4 LT |
37 | extern int strcmp(const char *,const char *); |
38 | extern size_t strlcat(char *, const char *, size_t); | |
39 | extern size_t strlcpy(char *, const char *, size_t); | |
40 | extern char *strncat(char *, const char *, size_t); | |
41 | extern char *strncpy(char *, const char *, size_t); | |
42 | extern char *strrchr(const char *, int); | |
43 | extern char *strstr(const char *, const char *); | |
44 | ||
1da177e4 LT |
45 | #undef __HAVE_ARCH_STRCHR |
46 | #undef __HAVE_ARCH_STRNCHR | |
47 | #undef __HAVE_ARCH_STRNCMP | |
1da177e4 LT |
48 | #undef __HAVE_ARCH_STRPBRK |
49 | #undef __HAVE_ARCH_STRSEP | |
50 | #undef __HAVE_ARCH_STRSPN | |
51 | ||
52 | #if !defined(IN_ARCH_STRING_C) | |
53 | ||
54 | static inline void *memchr(const void * s, int c, size_t n) | |
55 | { | |
56 | register int r0 asm("0") = (char) c; | |
57 | const void *ret = s + n; | |
58 | ||
94c12cc7 MS |
59 | asm volatile( |
60 | "0: srst %0,%1\n" | |
61 | " jo 0b\n" | |
62 | " jl 1f\n" | |
63 | " la %0,0\n" | |
64 | "1:" | |
7a71fd1c | 65 | : "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory"); |
1da177e4 LT |
66 | return (void *) ret; |
67 | } | |
68 | ||
69 | static inline void *memscan(void *s, int c, size_t n) | |
70 | { | |
71 | register int r0 asm("0") = (char) c; | |
72 | const void *ret = s + n; | |
73 | ||
94c12cc7 MS |
74 | asm volatile( |
75 | "0: srst %0,%1\n" | |
76 | " jo 0b\n" | |
7a71fd1c | 77 | : "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory"); |
1da177e4 LT |
78 | return (void *) ret; |
79 | } | |
80 | ||
81 | static inline char *strcat(char *dst, const char *src) | |
82 | { | |
83 | register int r0 asm("0") = 0; | |
84 | unsigned long dummy; | |
85 | char *ret = dst; | |
86 | ||
94c12cc7 MS |
87 | asm volatile( |
88 | "0: srst %0,%1\n" | |
89 | " jo 0b\n" | |
90 | "1: mvst %0,%2\n" | |
91 | " jo 1b" | |
92 | : "=&a" (dummy), "+a" (dst), "+a" (src) | |
93 | : "d" (r0), "0" (0) : "cc", "memory" ); | |
1da177e4 LT |
94 | return ret; |
95 | } | |
96 | ||
97 | static inline char *strcpy(char *dst, const char *src) | |
98 | { | |
99 | register int r0 asm("0") = 0; | |
100 | char *ret = dst; | |
101 | ||
94c12cc7 MS |
102 | asm volatile( |
103 | "0: mvst %0,%1\n" | |
104 | " jo 0b" | |
105 | : "+&a" (dst), "+&a" (src) : "d" (r0) | |
106 | : "cc", "memory"); | |
1da177e4 LT |
107 | return ret; |
108 | } | |
109 | ||
110 | static inline size_t strlen(const char *s) | |
111 | { | |
112 | register unsigned long r0 asm("0") = 0; | |
113 | const char *tmp = s; | |
114 | ||
94c12cc7 MS |
115 | asm volatile( |
116 | "0: srst %0,%1\n" | |
117 | " jo 0b" | |
7a71fd1c | 118 | : "+d" (r0), "+a" (tmp) : : "cc", "memory"); |
1da177e4 LT |
119 | return r0 - (unsigned long) s; |
120 | } | |
121 | ||
122 | static inline size_t strnlen(const char * s, size_t n) | |
123 | { | |
124 | register int r0 asm("0") = 0; | |
125 | const char *tmp = s; | |
126 | const char *end = s + n; | |
127 | ||
94c12cc7 MS |
128 | asm volatile( |
129 | "0: srst %0,%1\n" | |
130 | " jo 0b" | |
7a71fd1c | 131 | : "+a" (end), "+a" (tmp) : "d" (r0) : "cc", "memory"); |
1da177e4 LT |
132 | return end - s; |
133 | } | |
6faf2507 RR |
134 | #else /* IN_ARCH_STRING_C */ |
135 | void *memchr(const void * s, int c, size_t n); | |
136 | void *memscan(void *s, int c, size_t n); | |
137 | char *strcat(char *dst, const char *src); | |
138 | char *strcpy(char *dst, const char *src); | |
139 | size_t strlen(const char *s); | |
140 | size_t strnlen(const char * s, size_t n); | |
1da177e4 LT |
141 | #endif /* !IN_ARCH_STRING_C */ |
142 | ||
1da177e4 | 143 | #endif /* __S390_STRING_H_ */ |