/* * 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_ #ifndef _LINUX_TYPES_H #include #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) { #if __GNUC__ < 4 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; #else return __builtin_strcpy(dst, src); #endif } static inline size_t strlen(const char *s) { #if __GNUC__ < 4 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; #else return __builtin_strlen(s); #endif } 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; } #else /* IN_ARCH_STRING_C */ void *memchr(const void * s, int c, size_t n); void *memscan(void *s, int c, size_t n); char *strcat(char *dst, const char *src); char *strcpy(char *dst, const char *src); size_t strlen(const char *s); size_t strnlen(const char * s, size_t n); #endif /* !IN_ARCH_STRING_C */ #endif /* __S390_STRING_H_ */