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- /*
- * include/asm-s390/string.h
- *
- * S390 version
- * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- */
-
- #ifndef _S390_STRING_H_
- #define _S390_STRING_H_
-
- #ifdef __KERNEL__
-
- #ifndef _LINUX_TYPES_H
- #include <linux/types.h>
- #endif
-
- #define __HAVE_ARCH_MEMCHR /* inline & arch function */
- #define __HAVE_ARCH_MEMCMP /* arch function */
- #define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */
- #define __HAVE_ARCH_MEMSCAN /* inline & arch function */
- #define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */
- #define __HAVE_ARCH_STRCAT /* inline & arch function */
- #define __HAVE_ARCH_STRCMP /* arch function */
- #define __HAVE_ARCH_STRCPY /* inline & arch function */
- #define __HAVE_ARCH_STRLCAT /* arch function */
- #define __HAVE_ARCH_STRLCPY /* arch function */
- #define __HAVE_ARCH_STRLEN /* inline & arch function */
- #define __HAVE_ARCH_STRNCAT /* arch function */
- #define __HAVE_ARCH_STRNCPY /* arch function */
- #define __HAVE_ARCH_STRNLEN /* inline & arch function */
- #define __HAVE_ARCH_STRRCHR /* arch function */
- #define __HAVE_ARCH_STRSTR /* arch function */
-
- /* Prototypes for non-inlined arch strings functions. */
- extern int memcmp(const void *, const void *, size_t);
- extern void *memcpy(void *, const void *, size_t);
- extern void *memset(void *, int, size_t);
- extern int strcmp(const char *,const char *);
- extern size_t strlcat(char *, const char *, size_t);
- extern size_t strlcpy(char *, const char *, size_t);
- extern char *strncat(char *, const char *, size_t);
- extern char *strncpy(char *, const char *, size_t);
- extern char *strrchr(const char *, int);
- extern char *strstr(const char *, const char *);
-
- #undef __HAVE_ARCH_MEMMOVE
- #undef __HAVE_ARCH_STRCHR
- #undef __HAVE_ARCH_STRNCHR
- #undef __HAVE_ARCH_STRNCMP
- #undef __HAVE_ARCH_STRNICMP
- #undef __HAVE_ARCH_STRPBRK
- #undef __HAVE_ARCH_STRSEP
- #undef __HAVE_ARCH_STRSPN
-
- #if !defined(IN_ARCH_STRING_C)
-
- static inline void *memchr(const void * s, int c, size_t n)
- {
- register int r0 asm("0") = (char) c;
- const void *ret = s + n;
-
- asm volatile ("0: srst %0,%1\n"
- " jo 0b\n"
- " jl 1f\n"
- " la %0,0\n"
- "1:"
- : "+a" (ret), "+&a" (s) : "d" (r0) : "cc" );
- return (void *) ret;
- }
-
- static inline void *memscan(void *s, int c, size_t n)
- {
- register int r0 asm("0") = (char) c;
- const void *ret = s + n;
-
- asm volatile ("0: srst %0,%1\n"
- " jo 0b\n"
- : "+a" (ret), "+&a" (s) : "d" (r0) : "cc" );
- return (void *) ret;
- }
-
- static inline char *strcat(char *dst, const char *src)
- {
- register int r0 asm("0") = 0;
- unsigned long dummy;
- char *ret = dst;
-
- asm volatile ("0: srst %0,%1\n"
- " jo 0b\n"
- "1: mvst %0,%2\n"
- " jo 1b"
- : "=&a" (dummy), "+a" (dst), "+a" (src)
- : "d" (r0), "0" (0) : "cc", "memory" );
- return ret;
- }
-
- static inline char *strcpy(char *dst, const char *src)
- {
- register int r0 asm("0") = 0;
- char *ret = dst;
-
- asm volatile ("0: mvst %0,%1\n"
- " jo 0b"
- : "+&a" (dst), "+&a" (src) : "d" (r0)
- : "cc", "memory" );
- return ret;
- }
-
- static inline size_t strlen(const char *s)
- {
- register unsigned long r0 asm("0") = 0;
- const char *tmp = s;
-
- asm volatile ("0: srst %0,%1\n"
- " jo 0b"
- : "+d" (r0), "+a" (tmp) : : "cc" );
- return r0 - (unsigned long) s;
- }
-
- static inline size_t strnlen(const char * s, size_t n)
- {
- register int r0 asm("0") = 0;
- const char *tmp = s;
- const char *end = s + n;
-
- asm volatile ("0: srst %0,%1\n"
- " jo 0b"
- : "+a" (end), "+a" (tmp) : "d" (r0) : "cc" );
- return end - s;
- }
-
- #endif /* !IN_ARCH_STRING_C */
-
- #endif /* __KERNEL__ */
-
- #endif /* __S390_STRING_H_ */
-