root/arch/powerpc/include/asm/string.h

INCLUDED FROM

DEFINITIONS

1. memset16
2. memset32
3. memset64

   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 
  20 extern char * strcpy(char *,const char *);
  21 extern char * strncpy(char *,const char *, __kernel_size_t);
  22 extern __kernel_size_t strlen(const char *);
  23 extern int strcmp(const char *,const char *);
  24 extern int strncmp(const char *, const char *, __kernel_size_t);
  25 extern char * strcat(char *, const char *);
  26 extern void * memset(void *,int,__kernel_size_t);
  27 extern void * memcpy(void *,const void *,__kernel_size_t);
  28 extern void * memmove(void *,const void *,__kernel_size_t);
  29 extern int memcmp(const void *,const void *,__kernel_size_t);
  30 extern void * memchr(const void *,int,__kernel_size_t);
  31 extern void * memcpy_flushcache(void *,const void *,__kernel_size_t);
  32 
  33 void *__memset(void *s, int c, __kernel_size_t count);
  34 void *__memcpy(void *to, const void *from, __kernel_size_t n);
  35 void *__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 #define __HAVE_ARCH_MEMCPY_MCSAFE
  57 
  58 extern int memcpy_mcsafe(void *dst, const void *src, __kernel_size_t sz);
  59 extern void *__memset16(uint16_t *, uint16_t v, __kernel_size_t);
  60 extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t);
  61 extern void *__memset64(uint64_t *, uint64_t v, __kernel_size_t);
  62 
  63 static inline void *memset16(uint16_t *p, uint16_t v, __kernel_size_t n)
  64 {
  65         return __memset16(p, v, n * 2);
  66 }
  67 
  68 static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n)
  69 {
  70         return __memset32(p, v, n * 4);
  71 }
  72 
  73 static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n)
  74 {
  75         return __memset64(p, v, n * 8);
  76 }
  77 #endif
  78 #else
  79 #ifndef CONFIG_KASAN
  80 #define __HAVE_ARCH_STRLEN
  81 #endif
  82 
  83 extern void *memset16(uint16_t *, uint16_t, __kernel_size_t);
  84 #endif
  85 #endif /* __KERNEL__ */
  86 
  87 #endif  /* _ASM_POWERPC_STRING_H */