fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-s390 / string.h
blobd074673a6d9b500010e3c7f4ad25cfbaea5b2d68
1 /*
2 * include/asm-s390/string.h
4 * S390 version
5 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
7 */
9 #ifndef _S390_STRING_H_
10 #define _S390_STRING_H_
12 #ifdef __KERNEL__
14 #ifndef _LINUX_TYPES_H
15 #include <linux/types.h>
16 #endif
18 #define __HAVE_ARCH_MEMCHR /* inline & arch function */
19 #define __HAVE_ARCH_MEMCMP /* arch function */
20 #define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */
21 #define __HAVE_ARCH_MEMSCAN /* inline & arch function */
22 #define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */
23 #define __HAVE_ARCH_STRCAT /* inline & arch function */
24 #define __HAVE_ARCH_STRCMP /* arch function */
25 #define __HAVE_ARCH_STRCPY /* inline & arch function */
26 #define __HAVE_ARCH_STRLCAT /* arch function */
27 #define __HAVE_ARCH_STRLCPY /* arch function */
28 #define __HAVE_ARCH_STRLEN /* inline & arch function */
29 #define __HAVE_ARCH_STRNCAT /* arch function */
30 #define __HAVE_ARCH_STRNCPY /* arch function */
31 #define __HAVE_ARCH_STRNLEN /* inline & arch function */
32 #define __HAVE_ARCH_STRRCHR /* arch function */
33 #define __HAVE_ARCH_STRSTR /* arch function */
35 /* Prototypes for non-inlined arch strings functions. */
36 extern int memcmp(const void *, const void *, size_t);
37 extern void *memcpy(void *, const void *, size_t);
38 extern void *memset(void *, int, size_t);
39 extern int strcmp(const char *,const char *);
40 extern size_t strlcat(char *, const char *, size_t);
41 extern size_t strlcpy(char *, const char *, size_t);
42 extern char *strncat(char *, const char *, size_t);
43 extern char *strncpy(char *, const char *, size_t);
44 extern char *strrchr(const char *, int);
45 extern char *strstr(const char *, const char *);
47 #undef __HAVE_ARCH_MEMMOVE
48 #undef __HAVE_ARCH_STRCHR
49 #undef __HAVE_ARCH_STRNCHR
50 #undef __HAVE_ARCH_STRNCMP
51 #undef __HAVE_ARCH_STRNICMP
52 #undef __HAVE_ARCH_STRPBRK
53 #undef __HAVE_ARCH_STRSEP
54 #undef __HAVE_ARCH_STRSPN
56 #if !defined(IN_ARCH_STRING_C)
58 static inline void *memchr(const void * s, int c, size_t n)
60 register int r0 asm("0") = (char) c;
61 const void *ret = s + n;
63 asm volatile(
64 "0: srst %0,%1\n"
65 " jo 0b\n"
66 " jl 1f\n"
67 " la %0,0\n"
68 "1:"
69 : "+a" (ret), "+&a" (s) : "d" (r0) : "cc");
70 return (void *) ret;
73 static inline void *memscan(void *s, int c, size_t n)
75 register int r0 asm("0") = (char) c;
76 const void *ret = s + n;
78 asm volatile(
79 "0: srst %0,%1\n"
80 " jo 0b\n"
81 : "+a" (ret), "+&a" (s) : "d" (r0) : "cc");
82 return (void *) ret;
85 static inline char *strcat(char *dst, const char *src)
87 register int r0 asm("0") = 0;
88 unsigned long dummy;
89 char *ret = dst;
91 asm volatile(
92 "0: srst %0,%1\n"
93 " jo 0b\n"
94 "1: mvst %0,%2\n"
95 " jo 1b"
96 : "=&a" (dummy), "+a" (dst), "+a" (src)
97 : "d" (r0), "0" (0) : "cc", "memory" );
98 return ret;
101 static inline char *strcpy(char *dst, const char *src)
103 register int r0 asm("0") = 0;
104 char *ret = dst;
106 asm volatile(
107 "0: mvst %0,%1\n"
108 " jo 0b"
109 : "+&a" (dst), "+&a" (src) : "d" (r0)
110 : "cc", "memory");
111 return ret;
114 static inline size_t strlen(const char *s)
116 register unsigned long r0 asm("0") = 0;
117 const char *tmp = s;
119 asm volatile(
120 "0: srst %0,%1\n"
121 " jo 0b"
122 : "+d" (r0), "+a" (tmp) : : "cc");
123 return r0 - (unsigned long) s;
126 static inline size_t strnlen(const char * s, size_t n)
128 register int r0 asm("0") = 0;
129 const char *tmp = s;
130 const char *end = s + n;
132 asm volatile(
133 "0: srst %0,%1\n"
134 " jo 0b"
135 : "+a" (end), "+a" (tmp) : "d" (r0) : "cc");
136 return end - s;
139 #endif /* !IN_ARCH_STRING_C */
141 #endif /* __KERNEL__ */
143 #endif /* __S390_STRING_H_ */