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208 lines
5.6 KiB
208 lines
5.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* S390 version |
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* Copyright IBM Corp. 1999 |
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* Author(s): Martin Schwidefsky ([email protected]), |
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*/ |
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#ifndef _S390_STRING_H_ |
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#define _S390_STRING_H_ |
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#ifndef _LINUX_TYPES_H |
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#include <linux/types.h> |
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#endif |
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#define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */ |
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#define __HAVE_ARCH_MEMMOVE /* gcc builtin & arch function */ |
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#define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */ |
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#define __HAVE_ARCH_MEMSET16 /* arch function */ |
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#define __HAVE_ARCH_MEMSET32 /* arch function */ |
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#define __HAVE_ARCH_MEMSET64 /* arch function */ |
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void *memcpy(void *dest, const void *src, size_t n); |
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void *memset(void *s, int c, size_t n); |
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void *memmove(void *dest, const void *src, size_t n); |
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#ifndef CONFIG_KASAN |
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#define __HAVE_ARCH_MEMCHR /* inline & arch function */ |
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#define __HAVE_ARCH_MEMCMP /* arch function */ |
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#define __HAVE_ARCH_MEMSCAN /* inline & arch function */ |
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#define __HAVE_ARCH_STRCAT /* inline & arch function */ |
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#define __HAVE_ARCH_STRCMP /* arch function */ |
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#define __HAVE_ARCH_STRCPY /* inline & arch function */ |
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#define __HAVE_ARCH_STRLCAT /* arch function */ |
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#define __HAVE_ARCH_STRLCPY /* arch function */ |
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#define __HAVE_ARCH_STRLEN /* inline & arch function */ |
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#define __HAVE_ARCH_STRNCAT /* arch function */ |
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#define __HAVE_ARCH_STRNCPY /* arch function */ |
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#define __HAVE_ARCH_STRNLEN /* inline & arch function */ |
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#define __HAVE_ARCH_STRRCHR /* arch function */ |
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#define __HAVE_ARCH_STRSTR /* arch function */ |
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/* Prototypes for non-inlined arch strings functions. */ |
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int memcmp(const void *s1, const void *s2, size_t n); |
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int strcmp(const char *s1, const char *s2); |
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size_t strlcat(char *dest, const char *src, size_t n); |
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size_t strlcpy(char *dest, const char *src, size_t size); |
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char *strncat(char *dest, const char *src, size_t n); |
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char *strncpy(char *dest, const char *src, size_t n); |
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char *strrchr(const char *s, int c); |
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char *strstr(const char *s1, const char *s2); |
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#endif /* !CONFIG_KASAN */ |
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#undef __HAVE_ARCH_STRCHR |
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#undef __HAVE_ARCH_STRNCHR |
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#undef __HAVE_ARCH_STRNCMP |
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#undef __HAVE_ARCH_STRPBRK |
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#undef __HAVE_ARCH_STRSEP |
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#undef __HAVE_ARCH_STRSPN |
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#if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) |
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extern void *__memcpy(void *dest, const void *src, size_t n); |
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extern void *__memset(void *s, int c, size_t n); |
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extern void *__memmove(void *dest, const void *src, size_t n); |
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/* |
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* For files that are not instrumented (e.g. mm/slub.c) we |
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* should use not instrumented version of mem* functions. |
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*/ |
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#define memcpy(dst, src, len) __memcpy(dst, src, len) |
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#define memmove(dst, src, len) __memmove(dst, src, len) |
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#define memset(s, c, n) __memset(s, c, n) |
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#define strlen(s) __strlen(s) |
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#define __no_sanitize_prefix_strfunc(x) __##x |
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#ifndef __NO_FORTIFY |
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#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */ |
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#endif |
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#else |
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#define __no_sanitize_prefix_strfunc(x) x |
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#endif /* defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) */ |
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void *__memset16(uint16_t *s, uint16_t v, size_t count); |
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void *__memset32(uint32_t *s, uint32_t v, size_t count); |
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void *__memset64(uint64_t *s, uint64_t v, size_t count); |
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static inline void *memset16(uint16_t *s, uint16_t v, size_t count) |
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{ |
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return __memset16(s, v, count * sizeof(v)); |
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} |
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static inline void *memset32(uint32_t *s, uint32_t v, size_t count) |
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{ |
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return __memset32(s, v, count * sizeof(v)); |
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} |
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static inline void *memset64(uint64_t *s, uint64_t v, size_t count) |
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{ |
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return __memset64(s, v, count * sizeof(v)); |
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} |
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#if !defined(IN_ARCH_STRING_C) && (!defined(CONFIG_FORTIFY_SOURCE) || defined(__NO_FORTIFY)) |
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#ifdef __HAVE_ARCH_MEMCHR |
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static inline void *memchr(const void * s, int c, size_t n) |
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{ |
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register int r0 asm("0") = (char) c; |
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const void *ret = s + n; |
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asm volatile( |
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"0: srst %0,%1\n" |
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" jo 0b\n" |
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" jl 1f\n" |
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" la %0,0\n" |
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"1:" |
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: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory"); |
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return (void *) ret; |
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} |
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#endif |
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#ifdef __HAVE_ARCH_MEMSCAN |
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static inline void *memscan(void *s, int c, size_t n) |
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{ |
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register int r0 asm("0") = (char) c; |
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const void *ret = s + n; |
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asm volatile( |
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"0: srst %0,%1\n" |
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" jo 0b\n" |
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: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory"); |
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return (void *) ret; |
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} |
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#endif |
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#ifdef __HAVE_ARCH_STRCAT |
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static inline char *strcat(char *dst, const char *src) |
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{ |
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register int r0 asm("0") = 0; |
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unsigned long dummy; |
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char *ret = dst; |
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asm volatile( |
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"0: srst %0,%1\n" |
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" jo 0b\n" |
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"1: mvst %0,%2\n" |
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" jo 1b" |
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: "=&a" (dummy), "+a" (dst), "+a" (src) |
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: "d" (r0), "0" (0) : "cc", "memory" ); |
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return ret; |
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} |
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#endif |
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#ifdef __HAVE_ARCH_STRCPY |
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static inline char *strcpy(char *dst, const char *src) |
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{ |
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register int r0 asm("0") = 0; |
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char *ret = dst; |
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asm volatile( |
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"0: mvst %0,%1\n" |
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" jo 0b" |
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: "+&a" (dst), "+&a" (src) : "d" (r0) |
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: "cc", "memory"); |
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return ret; |
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} |
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#endif |
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#if defined(__HAVE_ARCH_STRLEN) || (defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)) |
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static inline size_t __no_sanitize_prefix_strfunc(strlen)(const char *s) |
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{ |
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register unsigned long r0 asm("0") = 0; |
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const char *tmp = s; |
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asm volatile( |
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"0: srst %0,%1\n" |
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" jo 0b" |
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: "+d" (r0), "+a" (tmp) : : "cc", "memory"); |
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return r0 - (unsigned long) s; |
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} |
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#endif |
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#ifdef __HAVE_ARCH_STRNLEN |
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static inline size_t strnlen(const char * s, size_t n) |
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{ |
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register int r0 asm("0") = 0; |
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const char *tmp = s; |
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const char *end = s + n; |
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asm volatile( |
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"0: srst %0,%1\n" |
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" jo 0b" |
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: "+a" (end), "+a" (tmp) : "d" (r0) : "cc", "memory"); |
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return end - s; |
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} |
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#endif |
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#else /* IN_ARCH_STRING_C */ |
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void *memchr(const void * s, int c, size_t n); |
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void *memscan(void *s, int c, size_t n); |
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char *strcat(char *dst, const char *src); |
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char *strcpy(char *dst, const char *src); |
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size_t strlen(const char *s); |
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size_t strnlen(const char * s, size_t n); |
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#endif /* !IN_ARCH_STRING_C */ |
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#endif /* __S390_STRING_H_ */
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