de50ce20cd
Copy kstrtoull() and the other necessary functions from lib/kstrtox.c to boot/string.c so that code in boot/ can use kstrtoull() and the old simple_strtoull() can gradually be phased out. Using div_u64() from math64.h directly will cause the dividend to be handled as a 64-bit value and cause the infamous __divdi3 linker error due to gcc trying to use its library function for the 64-bit division. Therefore, separate the dividend into an upper and lower part. [ bp: Rewrite commit message. ] Signed-off-by: Chao Fan <fanc.fnst@cn.fujitsu.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: bhe@redhat.com Cc: caoj.fnst@cn.fujitsu.com Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: indou.takao@jp.fujitsu.com Cc: Ingo Molnar <mingo@redhat.com> Cc: kasong@redhat.com Cc: Kees Cook <keescook@chromium.org> Cc: msys.mizuma@gmail.com Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20190123110850.12433-2-fanc.fnst@cn.fujitsu.com
34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef BOOT_STRING_H
|
|
#define BOOT_STRING_H
|
|
|
|
/* Undef any of these macros coming from string_32.h. */
|
|
#undef memcpy
|
|
#undef memset
|
|
#undef memcmp
|
|
|
|
void *memcpy(void *dst, const void *src, size_t len);
|
|
void *memset(void *dst, int c, size_t len);
|
|
int memcmp(const void *s1, const void *s2, size_t len);
|
|
|
|
/*
|
|
* Access builtin version by default. If one needs to use optimized version,
|
|
* do "undef memcpy" in .c file and link against right string.c
|
|
*/
|
|
#define memcpy(d,s,l) __builtin_memcpy(d,s,l)
|
|
#define memset(d,c,l) __builtin_memset(d,c,l)
|
|
#define memcmp __builtin_memcmp
|
|
|
|
extern int strcmp(const char *str1, const char *str2);
|
|
extern int strncmp(const char *cs, const char *ct, size_t count);
|
|
extern size_t strlen(const char *s);
|
|
extern char *strstr(const char *s1, const char *s2);
|
|
extern char *strchr(const char *s, int c);
|
|
extern size_t strnlen(const char *s, size_t maxlen);
|
|
extern unsigned int atou(const char *s);
|
|
extern unsigned long long simple_strtoull(const char *cp, char **endp,
|
|
unsigned int base);
|
|
|
|
int kstrtoull(const char *s, unsigned int base, unsigned long long *res);
|
|
#endif /* BOOT_STRING_H */
|