/* SPDX-License-Identifier: GPL-2.0 *//* *  S390 version *    Copyright IBM Corp. 1999 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), */ #ifndef _S390_STRING_H_#define _S390_STRING_H_ #ifndef _LINUX_TYPES_H#include <linux/types.h>#endif #define __HAVE_ARCH_MEMCPY	/* gcc builtin & arch function */#define __HAVE_ARCH_MEMMOVE	/* gcc builtin & arch function */#define __HAVE_ARCH_MEMSET	/* gcc builtin & arch function */ void *memcpy(void *dest, const void *src, size_t n);void *memset(void *s, int c, size_t n);void *memmove(void *dest, const void *src, size_t n); #if !defined(CONFIG_KASAN) && !defined(CONFIG_KMSAN)#define __HAVE_ARCH_MEMCHR	/* inline & arch function */#define __HAVE_ARCH_MEMCMP	/* arch function */#define __HAVE_ARCH_MEMSCAN	/* inline & arch function */#define __HAVE_ARCH_STRCAT	/* inline & arch function */#define __HAVE_ARCH_STRCMP	/* arch function */#define __HAVE_ARCH_STRLEN	/* inline & arch function */#define __HAVE_ARCH_STRNCAT	/* arch function */#define __HAVE_ARCH_STRNLEN	/* inline & arch function */#define __HAVE_ARCH_STRSTR	/* arch function */#define __HAVE_ARCH_MEMSET16	/* arch function */#define __HAVE_ARCH_MEMSET32	/* arch function */#define __HAVE_ARCH_MEMSET64	/* arch function */ /* Prototypes for non-inlined arch strings functions. */int memcmp(const void *s1, const void *s2, size_t n);int strcmp(const char *s1, const char *s2);char *strncat(char *dest, const char *src, size_t n);char *strstr(const char *s1, const char *s2);#endif /* !defined(CONFIG_KASAN) && !defined(CONFIG_KMSAN) */ #undef __HAVE_ARCH_STRCHR#undef __HAVE_ARCH_STRNCHR#undef __HAVE_ARCH_STRNCMP#undef __HAVE_ARCH_STRPBRK#undef __HAVE_ARCH_STRSEP#undef __HAVE_ARCH_STRSPN #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) #define strlen(s) __strlen(s) #define __no_sanitize_prefix_strfunc(x) __##x #ifndef __NO_FORTIFY#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */#endif #else#define __no_sanitize_prefix_strfunc(x) x#endif /* defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) */ void *__memcpy(void *dest, const void *src, size_t n);void *__memset(void *s, int c, size_t n);void *__memmove(void *dest, const void *src, size_t n);void *__memset16(uint16_t *s, uint16_t v, size_t count);void *__memset32(uint32_t *s, uint32_t v, size_t count);void *__memset64(uint64_t *s, uint64_t v, size_t count); #ifdef __HAVE_ARCH_MEMSET16static inline void *memset16(uint16_t *s, uint16_t v, size_t count){	return __memset16(s, v, count * sizeof(v));}#endif #ifdef __HAVE_ARCH_MEMSET32static inline void *memset32(uint32_t *s, uint32_t v, size_t count){	return __memset32(s, v, count * sizeof(v));}#endif #ifdef __HAVE_ARCH_MEMSET64#ifdef IN_BOOT_STRING_Cvoid *memset64(uint64_t *s, uint64_t v, size_t count);#elsestatic inline void *memset64(uint64_t *s, uint64_t v, size_t count){	return __memset64(s, v, count * sizeof(v));}#endif#endif #if !defined(IN_ARCH_STRING_C) && (!defined(CONFIG_FORTIFY_SOURCE) || defined(__NO_FORTIFY)) #ifdef __HAVE_ARCH_MEMCHRstatic inline void *memchr(const void * s, int c, size_t n){	const void *ret = s + n; 	asm volatile(		"	lgr	0,%[c]\n"		"0:	srst	%[ret],%[s]\n"		"	jo	0b\n"		"	jl	1f\n"		"	la	%[ret],0\n"		"1:"		: [ret] "+&a" (ret), [s] "+&a" (s)		: [c] "d" (c)		: "cc", "memory", "0");	return (void *) ret;}#endif #ifdef __HAVE_ARCH_MEMSCANstatic inline void *memscan(void *s, int c, size_t n){	const void *ret = s + n; 	asm volatile(		"	lgr	0,%[c]\n"		"0:	srst	%[ret],%[s]\n"		"	jo	0b"		: [ret] "+&a" (ret), [s] "+&a" (s)		: [c] "d" (c)		: "cc", "memory", "0");	return (void *) ret;}#endif #ifdef __HAVE_ARCH_STRCATstatic inline char *strcat(char *dst, const char *src){	unsigned long dummy = 0;	char *ret = dst; 	asm volatile(		"	lghi	0,0\n"		"0:	srst	%[dummy],%[dst]\n"		"	jo	0b\n"		"1:	mvst	%[dummy],%[src]\n"		"	jo	1b"		: [dummy] "+&a" (dummy), [dst] "+&a" (dst), [src] "+&a" (src)		:		: "cc", "memory", "0");	return ret;}#endif #if defined(__HAVE_ARCH_STRLEN) || (defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__))static inline size_t __no_sanitize_prefix_strfunc(strlen)(const char *s){	unsigned long end = 0;	const char *tmp = s; 	asm volatile(		"	lghi	0,0\n"		"0:	srst	%[end],%[tmp]\n"		"	jo	0b"		: [end] "+&a" (end), [tmp] "+&a" (tmp)		:		: "cc", "memory", "0");	return end - (unsigned long)s;}#endif #ifdef __HAVE_ARCH_STRNLENstatic inline size_t strnlen(const char * s, size_t n){	const char *tmp = s;	const char *end = s + n; 	asm volatile(		"	lghi	0,0\n"		"0:	srst	%[end],%[tmp]\n"		"	jo	0b"		: [end] "+&a" (end), [tmp] "+&a" (tmp)		:		: "cc", "memory", "0");	return end - s;}#endif#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);size_t strlen(const char *s);size_t strnlen(const char * s, size_t n);#endif /* !IN_ARCH_STRING_C */ #endif /* __S390_STRING_H_ */