string.h
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上传日期:2013-02-24
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文件大小:3k
- /*
- * 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
- #define __HAVE_ARCH_MEMCPY
- #define __HAVE_ARCH_MEMSET
- #define __HAVE_ARCH_STRCAT
- #define __HAVE_ARCH_STRCMP
- #define __HAVE_ARCH_STRCPY
- #define __HAVE_ARCH_STRLEN
- #define __HAVE_ARCH_STRNCPY
- #undef __HAVE_ARCH_MEMMOVE
- #undef __HAVE_ARCH_STRNICMP
- #undef __HAVE_ARCH_STRNCAT
- #undef __HAVE_ARCH_STRNCMP
- #undef __HAVE_ARCH_STRCHR
- #undef __HAVE_ARCH_STRRCHR
- #undef __HAVE_ARCH_STRNLEN
- #undef __HAVE_ARCH_STRSPN
- #undef __HAVE_ARCH_STRPBRK
- #undef __HAVE_ARCH_STRTOK
- #undef __HAVE_ARCH_BCOPY
- #undef __HAVE_ARCH_MEMCMP
- #undef __HAVE_ARCH_MEMSCAN
- #undef __HAVE_ARCH_STRSTR
- extern void *memset(void *, int, size_t);
- extern void *memcpy(void *, const void *, size_t);
- extern void *memmove(void *, const void *, size_t);
- extern char *strncpy(char *, const char *, size_t);
- extern int strcmp(const char *,const char *);
- static inline void * memchr(const void * cs,int c,size_t count)
- {
- void *ptr;
- __asm__ __volatile__ (" lr 0,%2n"
- " lr 1,%1n"
- " la %0,0(%3,%1)n"
- "0: srst %0,1n"
- " jo 0bn"
- " brc 13,1fn"
- " slr %0,%0n"
- "1:"
- : "=&a" (ptr) : "a" (cs), "d" (c), "d" (count)
- : "cc", "0", "1" );
- return ptr;
- }
- static __inline__ char *strcpy(char *dest, const char *src)
- {
- char *tmp = dest;
- __asm__ __volatile__ (" sr 0,0n"
- "0: mvst %0,%1n"
- " jo 0b"
- : "+&a" (dest), "+&a" (src) :
- : "cc", "memory", "0" );
- return tmp;
- }
- static __inline__ size_t strlen(const char *s)
- {
- size_t len;
- __asm__ __volatile__ (" sr 0,0n"
- " lr %0,%1n"
- "0: srst 0,%0n"
- " jo 0bn"
- " lr %0,0n"
- " sr %0,%1"
- : "=&a" (len) : "a" (s)
- : "cc", "0" );
- return len;
- }
- static __inline__ char *strcat(char *dest, const char *src)
- {
- char *tmp = dest;
- __asm__ __volatile__ (" sr 0,0n"
- "0: srst 0,%0n"
- " jo 0bn"
- " lr %0,0n"
- " sr 0,0n"
- "1: mvst %0,%1n"
- " jo 1b"
- : "+&a" (dest), "+&a" (src) :
- : "cc", "memory", "0" );
- return tmp;
- }
- extern void *alloca(size_t);
- #endif /* __KERNEL__ */
- #endif /* __S390_STRING_H_ */