1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/*
* string.h
*/
#ifndef _STRING_H
#define _STRING_H
#include <stddef.h>
/* Standard routines */
#define memcpy(a,b,c) __builtin_memcpy(a,b,c)
#define memmove(a,b,c) __builtin_memmove(a,b,c)
#define memset(a,b,c) __builtin_memset(a,b,c)
#define strcpy(a,b) __builtin_strcpy(a,b)
static inline size_t strlen(const char *s)
{
const char *ss = s;
while (*ss)
ss++;
return ss - s;
}
/* This only returns true or false */
static inline int memcmp(const void *__m1, const void *__m2, unsigned int __n)
{
_Bool rv;
asm volatile ("cld ; repe ; cmpsb ; setne %0":"=abd" (rv), "+D"(__m1),
"+S"(__m2), "+c"(__n));
return rv;
}
extern char *strchr(const char *s, int c);
#endif /* _STRING_H */
|
