1 #ifndef __ALPHA_STRING_H__
2 #define __ALPHA_STRING_H__
3
4 #ifdef __KERNEL__
5
6 /*
7 * GCC of any recent vintage doesn't do stupid things with bcopy.
8 * EGCS 1.1 knows all about expanding memcpy inline, others don't.
9 *
10 * Similarly for a memset with data = 0.
11 */
12
13 #define __HAVE_ARCH_MEMCPY
14 extern void * memcpy(void *, const void *, size_t);
15 #define __HAVE_ARCH_MEMMOVE
16 extern void * memmove(void *, const void *, size_t);
17
18 /* For backward compatibility with modules. Unused otherwise. */
19 extern void * __memcpy(void *, const void *, size_t);
20
21 #define memcpy __builtin_memcpy
22
23 #define __HAVE_ARCH_MEMSET
24 extern void * __constant_c_memset(void *, unsigned long, size_t);
25 extern void * ___memset(void *, int, size_t);
26 extern void * __memset(void *, int, size_t);
27 extern void * memset(void *, int, size_t);
28
29 /* For gcc 3.x, we cannot have the inline function named "memset" because
30 the __builtin_memset will attempt to resolve to the inline as well,
31 leading to a "sorry" about unimplemented recursive inlining. */
__memset(void * s,int c,size_t n)32 extern inline void *__memset(void *s, int c, size_t n)
33 {
34 if (__builtin_constant_p(c)) {
35 if (__builtin_constant_p(n)) {
36 return __builtin_memset(s, c, n);
37 } else {
38 unsigned long c8 = (c & 0xff) * 0x0101010101010101UL;
39 return __constant_c_memset(s, c8, n);
40 }
41 }
42 return ___memset(s, c, n);
43 }
44
45 #define memset __memset
46
47 #define __HAVE_ARCH_STRCPY
48 extern char * strcpy(char *,const char *);
49 #define __HAVE_ARCH_STRNCPY
50 extern char * strncpy(char *, const char *, size_t);
51 #define __HAVE_ARCH_STRCAT
52 extern char * strcat(char *, const char *);
53 #define __HAVE_ARCH_STRNCAT
54 extern char * strncat(char *, const char *, size_t);
55 #define __HAVE_ARCH_STRCHR
56 extern char * strchr(const char *,int);
57 #define __HAVE_ARCH_STRRCHR
58 extern char * strrchr(const char *,int);
59 #define __HAVE_ARCH_STRLEN
60 extern size_t strlen(const char *);
61 #define __HAVE_ARCH_MEMCHR
62 extern void * memchr(const void *, int, size_t);
63
64 /* The following routine is like memset except that it writes 16-bit
65 aligned values. The DEST and COUNT parameters must be even for
66 correct operation. */
67
68 #define __HAVE_ARCH_MEMSETW
69 extern void * __memsetw(void *dest, unsigned short, size_t count);
70
71 #define memsetw(s, c, n) \
72 (__builtin_constant_p(c) \
73 ? __constant_c_memset((s),0x0001000100010001UL*(unsigned short)(c),(n)) \
74 : __memsetw((s),(c),(n)))
75
76 #endif /* __KERNEL__ */
77
78 #endif /* __ALPHA_STRING_H__ */
79