arch/x86/boot/string.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef BOOT_STRING_H
   3 #define BOOT_STRING_H
   4
   5 /* Undef any of these macros coming from string_32.h. */
   6 #undef memcpy
   7 #undef memset
   8 #undef memcmp
   9
  10 void *memcpy(void *dst, const void *src, size_t len);
  11 void *memset(void *dst, int c, size_t len);
  12 int memcmp(const void *s1, const void *s2, size_t len);
  13
  14 /*
  15  * Access builtin version by default. If one needs to use optimized version,
  16  * do "undef memcpy" in .c file and link against right string.c
  17  */
  18 #define memcpy(d,s,l) __builtin_memcpy(d,s,l)
  19 #define memset(d,c,l) __builtin_memset(d,c,l)
  20 #define memcmp  __builtin_memcmp
  21
  22 extern int strcmp(const char *str1, const char *str2);
  23 extern int strncmp(const char *cs, const char *ct, size_t count);
  24 extern size_t strlen(const char *s);
  25 extern char *strstr(const char *s1, const char *s2);
  26 extern char *strchr(const char *s, int c);
  27 extern size_t strnlen(const char *s, size_t maxlen);
  28 extern unsigned int atou(const char *s);
  29 extern unsigned long long simple_strtoull(const char *cp, char **endp,
  30                                           unsigned int base);
  31
  32 #endif /* BOOT_STRING_H */