1 /* SPDX-License-Identifier: GPL-2.0 */
4 * Copyright IBM Corp. 1999
5 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
8 #ifndef _S390_STRING_H_
9 #define _S390_STRING_H_
11 #ifndef _LINUX_TYPES_H
12 #include <linux/types.h>
15 #define __HAVE_ARCH_MEMCHR /* inline & arch function */
16 #define __HAVE_ARCH_MEMCMP /* arch function */
17 #define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */
18 #define __HAVE_ARCH_MEMMOVE /* gcc builtin & arch function */
19 #define __HAVE_ARCH_MEMSCAN /* inline & arch function */
20 #define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */
21 #define __HAVE_ARCH_MEMSET16 /* arch function */
22 #define __HAVE_ARCH_MEMSET32 /* arch function */
23 #define __HAVE_ARCH_MEMSET64 /* arch function */
24 #define __HAVE_ARCH_STRCAT /* inline & arch function */
25 #define __HAVE_ARCH_STRCMP /* arch function */
26 #define __HAVE_ARCH_STRCPY /* inline & arch function */
27 #define __HAVE_ARCH_STRLCAT /* arch function */
28 #define __HAVE_ARCH_STRLCPY /* arch function */
29 #define __HAVE_ARCH_STRLEN /* inline & arch function */
30 #define __HAVE_ARCH_STRNCAT /* arch function */
31 #define __HAVE_ARCH_STRNCPY /* arch function */
32 #define __HAVE_ARCH_STRNLEN /* inline & arch function */
33 #define __HAVE_ARCH_STRRCHR /* arch function */
34 #define __HAVE_ARCH_STRSTR /* arch function */
36 /* Prototypes for non-inlined arch strings functions. */
37 int memcmp(const void *s1, const void *s2, size_t n);
38 void *memcpy(void *dest, const void *src, size_t n);
39 void *memset(void *s, int c, size_t n);
40 void *memmove(void *dest, const void *src, size_t n);
41 int strcmp(const char *s1, const char *s2);
42 size_t strlcat(char *dest, const char *src, size_t n);
43 size_t strlcpy(char *dest, const char *src, size_t size);
44 char *strncat(char *dest, const char *src, size_t n);
45 char *strncpy(char *dest, const char *src, size_t n);
46 char *strrchr(const char *s, int c);
47 char *strstr(const char *s1, const char *s2);
49 #undef __HAVE_ARCH_STRCHR
50 #undef __HAVE_ARCH_STRNCHR
51 #undef __HAVE_ARCH_STRNCMP
52 #undef __HAVE_ARCH_STRPBRK
53 #undef __HAVE_ARCH_STRSEP
54 #undef __HAVE_ARCH_STRSPN
56 #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
58 extern void *__memcpy(void *dest, const void *src, size_t n);
59 extern void *__memset(void *s, int c, size_t n);
60 extern void *__memmove(void *dest, const void *src, size_t n);
63 * For files that are not instrumented (e.g. mm/slub.c) we
64 * should use not instrumented version of mem* functions.
67 #define memcpy(dst, src, len) __memcpy(dst, src, len)
68 #define memmove(dst, src, len) __memmove(dst, src, len)
69 #define memset(s, c, n) __memset(s, c, n)
72 #define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
75 #endif /* defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) */
77 void *__memset16(uint16_t *s, uint16_t v, size_t count);
78 void *__memset32(uint32_t *s, uint32_t v, size_t count);
79 void *__memset64(uint64_t *s, uint64_t v, size_t count);
81 static inline void *memset16(uint16_t *s, uint16_t v, size_t count)
83 return __memset16(s, v, count * sizeof(v));
86 static inline void *memset32(uint32_t *s, uint32_t v, size_t count)
88 return __memset32(s, v, count * sizeof(v));
91 static inline void *memset64(uint64_t *s, uint64_t v, size_t count)
93 return __memset64(s, v, count * sizeof(v));
96 #if !defined(IN_ARCH_STRING_C) && (!defined(CONFIG_FORTIFY_SOURCE) || defined(__NO_FORTIFY))
98 static inline void *memchr(const void * s, int c, size_t n)
100 register int r0 asm("0") = (char) c;
101 const void *ret = s + n;
109 : "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
113 static inline void *memscan(void *s, int c, size_t n)
115 register int r0 asm("0") = (char) c;
116 const void *ret = s + n;
121 : "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
125 static inline char *strcat(char *dst, const char *src)
127 register int r0 asm("0") = 0;
136 : "=&a" (dummy), "+a" (dst), "+a" (src)
137 : "d" (r0), "0" (0) : "cc", "memory" );
141 static inline char *strcpy(char *dst, const char *src)
143 register int r0 asm("0") = 0;
149 : "+&a" (dst), "+&a" (src) : "d" (r0)
154 static inline size_t strlen(const char *s)
156 register unsigned long r0 asm("0") = 0;
162 : "+d" (r0), "+a" (tmp) : : "cc", "memory");
163 return r0 - (unsigned long) s;
166 static inline size_t strnlen(const char * s, size_t n)
168 register int r0 asm("0") = 0;
170 const char *end = s + n;
175 : "+a" (end), "+a" (tmp) : "d" (r0) : "cc", "memory");
178 #else /* IN_ARCH_STRING_C */
179 void *memchr(const void * s, int c, size_t n);
180 void *memscan(void *s, int c, size_t n);
181 char *strcat(char *dst, const char *src);
182 char *strcpy(char *dst, const char *src);
183 size_t strlen(const char *s);
184 size_t strnlen(const char * s, size_t n);
185 #endif /* !IN_ARCH_STRING_C */
187 #endif /* __S390_STRING_H_ */