LXR linux/arch/powerpc/include/asm/string.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_POWERPC_STRING_H
   3#define _ASM_POWERPC_STRING_H
   4
   5#ifdef __KERNEL__
   6
   7#ifndef CONFIG_KASAN
   8#define __HAVE_ARCH_STRNCPY
   9#define __HAVE_ARCH_STRNCMP
  10#define __HAVE_ARCH_MEMCHR
  11#define __HAVE_ARCH_MEMCMP
  12#define __HAVE_ARCH_MEMSET16
  13#endif
  14
  15#define __HAVE_ARCH_MEMSET
  16#define __HAVE_ARCH_MEMCPY
  17#define __HAVE_ARCH_MEMMOVE
  18#define __HAVE_ARCH_MEMCPY_FLUSHCACHE
  19
  20extern char * strcpy(char *,const char *);
  21extern char * strncpy(char *,const char *, __kernel_size_t);
  22extern __kernel_size_t strlen(const char *);
  23extern int strcmp(const char *,const char *);
  24extern int strncmp(const char *, const char *, __kernel_size_t);
  25extern char * strcat(char *, const char *);
  26extern void * memset(void *,int,__kernel_size_t);
  27extern void * memcpy(void *,const void *,__kernel_size_t);
  28extern void * memmove(void *,const void *,__kernel_size_t);
  29extern int memcmp(const void *,const void *,__kernel_size_t);
  30extern void * memchr(const void *,int,__kernel_size_t);
  31void memcpy_flushcache(void *dest, const void *src, size_t size);
  32
  33void *__memset(void *s, int c, __kernel_size_t count);
  34void *__memcpy(void *to, const void *from, __kernel_size_t n);
  35void *__memmove(void *to, const void *from, __kernel_size_t n);
  36
  37#if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
  38/*
  39 * For files that are not instrumented (e.g. mm/slub.c) we
  40 * should use not instrumented version of mem* functions.
  41 */
  42#define memcpy(dst, src, len) __memcpy(dst, src, len)
  43#define memmove(dst, src, len) __memmove(dst, src, len)
  44#define memset(s, c, n) __memset(s, c, n)
  45
  46#ifndef __NO_FORTIFY
  47#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
  48#endif
  49
  50#endif
  51
  52#ifdef CONFIG_PPC64
  53#ifndef CONFIG_KASAN
  54#define __HAVE_ARCH_MEMSET32
  55#define __HAVE_ARCH_MEMSET64
  56
  57extern void *__memset16(uint16_t *, uint16_t v, __kernel_size_t);
  58extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t);
  59extern void *__memset64(uint64_t *, uint64_t v, __kernel_size_t);
  60
  61static inline void *memset16(uint16_t *p, uint16_t v, __kernel_size_t n)
  62{
  63        return __memset16(p, v, n * 2);
  64}
  65
  66static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n)
  67{
  68        return __memset32(p, v, n * 4);
  69}
  70
  71static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n)
  72{
  73        return __memset64(p, v, n * 8);
  74}
  75#endif
  76#else
  77#ifndef CONFIG_KASAN
  78#define __HAVE_ARCH_STRLEN
  79#endif
  80
  81extern void *memset16(uint16_t *, uint16_t, __kernel_size_t);
  82#endif
  83#endif /* __KERNEL__ */
  84
  85#endif  /* _ASM_POWERPC_STRING_H */
  86