1 /* $Id: string.h,v 1.20 2001/09/27 04:36:24 kanoj Exp $
2 * string.h: External definitions for optimized assembly string
3 * routines for the Linux Kernel.
5 * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright (C) 1996,1997,1999 Jakub Jelinek (jakub@redhat.com)
9 #ifndef __SPARC64_STRING_H__
10 #define __SPARC64_STRING_H__
12 /* Really, userland/ksyms should not see any of this stuff. */
18 extern void __memmove(void *,const void *,__kernel_size_t);
19 extern void *__memset(void *,int,__kernel_size_t);
20 extern void *__builtin_memset(void *,int,__kernel_size_t);
22 #ifndef EXPORT_SYMTAB_STROPS
24 /* First the mem*() things. */
25 #define __HAVE_ARCH_BCOPY
26 #define __HAVE_ARCH_MEMMOVE
29 #define memmove(_to, _from, _n) \
32 __memmove(_t, (_from), (_n)); \
36 #define __HAVE_ARCH_MEMCPY
38 extern void * memcpy(void *,const void *,__kernel_size_t);
40 #define __HAVE_ARCH_MEMSET
42 static inline void *__constant_memset(void *s, int c, __kernel_size_t count)
44 extern __kernel_size_t __bzero(void *, __kernel_size_t);
50 return __memset(s, c, count);
54 #define memset(s, c, count) \
55 ((__builtin_constant_p(count) && (count) <= 32) ? \
56 __builtin_memset((s), (c), (count)) : \
57 (__builtin_constant_p(c) ? \
58 __constant_memset((s), (c), (count)) : \
59 __memset((s), (c), (count))))
61 #define __HAVE_ARCH_MEMSCAN
64 #define memscan(__arg0, __char, __arg2) \
66 extern void *__memscan_zero(void *, size_t); \
67 extern void *__memscan_generic(void *, int, size_t); \
68 void *__retval, *__addr = (__arg0); \
69 size_t __size = (__arg2); \
71 if(__builtin_constant_p(__char) && !(__char)) \
72 __retval = __memscan_zero(__addr, __size); \
74 __retval = __memscan_generic(__addr, (__char), __size); \
79 #define __HAVE_ARCH_MEMCMP
80 extern int memcmp(const void *,const void *,__kernel_size_t);
82 /* Now the str*() stuff... */
83 #define __HAVE_ARCH_STRLEN
85 extern __kernel_size_t __strlen(const char *);
86 extern __kernel_size_t strlen(const char *);
88 #define __HAVE_ARCH_STRNCMP
90 extern int __strncmp(const char *, const char *, __kernel_size_t);
92 static inline int __constant_strncmp(const char *src, const char *dest, __kernel_size_t count)
97 case 1: return (src[0] - dest[0]);
98 case 2: retval = (src[0] - dest[0]);
100 retval = (src[1] - dest[1]);
102 case 3: retval = (src[0] - dest[0]);
103 if(!retval && src[0]) {
104 retval = (src[1] - dest[1]);
105 if(!retval && src[1])
106 retval = (src[2] - dest[2]);
109 case 4: retval = (src[0] - dest[0]);
110 if(!retval && src[0]) {
111 retval = (src[1] - dest[1]);
112 if(!retval && src[1]) {
113 retval = (src[2] - dest[2]);
114 if (!retval && src[2])
115 retval = (src[3] - dest[3]);
119 case 5: retval = (src[0] - dest[0]);
120 if(!retval && src[0]) {
121 retval = (src[1] - dest[1]);
122 if(!retval && src[1]) {
123 retval = (src[2] - dest[2]);
124 if (!retval && src[2]) {
125 retval = (src[3] - dest[3]);
126 if (!retval && src[3])
127 retval = (src[4] - dest[4]);
133 retval = (src[0] - dest[0]);
134 if(!retval && src[0]) {
135 retval = (src[1] - dest[1]);
136 if(!retval && src[1]) {
137 retval = (src[2] - dest[2]);
138 if(!retval && src[2])
139 retval = __strncmp(src+3,dest+3,count-3);
147 #define strncmp(__arg0, __arg1, __arg2) \
148 (__builtin_constant_p(__arg2) ? \
149 __constant_strncmp(__arg0, __arg1, __arg2) : \
150 __strncmp(__arg0, __arg1, __arg2))
152 #endif /* !EXPORT_SYMTAB_STROPS */
154 #endif /* __KERNEL__ */
156 #endif /* !(__SPARC64_STRING_H__) */