Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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.
4 *
5 * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright (C) 1996,1997,1999 Jakub Jelinek (jakub@redhat.com)
7 */
8
9#ifndef __SPARC64_STRING_H__
10#define __SPARC64_STRING_H__
11
12/* Really, userland/ksyms should not see any of this stuff. */
13
14#ifdef __KERNEL__
15
16#include <asm/asi.h>
17
18extern void *__memset(void *,int,__kernel_size_t);
19
20#ifndef EXPORT_SYMTAB_STROPS
21
22/* First the mem*() things. */
23#define __HAVE_ARCH_MEMMOVE
24extern void *memmove(void *, const void *, __kernel_size_t);
25
26#define __HAVE_ARCH_MEMCPY
27extern void *memcpy(void *, const void *, __kernel_size_t);
28
29#define __HAVE_ARCH_MEMSET
30extern void *__builtin_memset(void *,int,__kernel_size_t);
31
32static inline void *__constant_memset(void *s, int c, __kernel_size_t count)
33{
34 extern __kernel_size_t __bzero(void *, __kernel_size_t);
35
36 if (!c) {
37 __bzero(s, count);
38 return s;
39 } else
40 return __memset(s, c, count);
41}
42
43#undef memset
44#define memset(s, c, count) \
45((__builtin_constant_p(count) && (count) <= 32) ? \
46 __builtin_memset((s), (c), (count)) : \
47 (__builtin_constant_p(c) ? \
48 __constant_memset((s), (c), (count)) : \
49 __memset((s), (c), (count))))
50
51#define __HAVE_ARCH_MEMSCAN
52
53#undef memscan
54#define memscan(__arg0, __char, __arg2) \
55({ \
56 extern void *__memscan_zero(void *, size_t); \
57 extern void *__memscan_generic(void *, int, size_t); \
58 void *__retval, *__addr = (__arg0); \
59 size_t __size = (__arg2); \
60 \
61 if(__builtin_constant_p(__char) && !(__char)) \
62 __retval = __memscan_zero(__addr, __size); \
63 else \
64 __retval = __memscan_generic(__addr, (__char), __size); \
65 \
66 __retval; \
67})
68
69#define __HAVE_ARCH_MEMCMP
70extern int memcmp(const void *,const void *,__kernel_size_t);
71
72/* Now the str*() stuff... */
73#define __HAVE_ARCH_STRLEN
74extern __kernel_size_t strlen(const char *);
75
76#define __HAVE_ARCH_STRNCMP
77extern int strncmp(const char *, const char *, __kernel_size_t);
78
79#endif /* !EXPORT_SYMTAB_STROPS */
80
81#endif /* __KERNEL__ */
82
83#endif /* !(__SPARC64_STRING_H__) */