projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | ||
| 18 | extern void *__memset(void *,int,__kernel_size_t); | |
| 19 | ||
| 20 | #ifndef EXPORT_SYMTAB_STROPS | |
| 21 | ||
| 22 | /* First the mem*() things. */ | |
| 23 | #define __HAVE_ARCH_MEMMOVE | |
| 24 | extern void *memmove(void *, const void *, __kernel_size_t); | |
| 25 | ||
| 26 | #define __HAVE_ARCH_MEMCPY | |
| 27 | extern void *memcpy(void *, const void *, __kernel_size_t); | |
| 28 | ||
| 29 | #define __HAVE_ARCH_MEMSET | |
| 30 | extern void *__builtin_memset(void *,int,__kernel_size_t); | |
| 31 | ||
| 32 | static 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 | |
| 70 | extern int memcmp(const void *,const void *,__kernel_size_t); | |
| 71 | ||
| 72 | /* Now the str*() stuff... */ | |
| 73 | #define __HAVE_ARCH_STRLEN | |
| 74 | extern __kernel_size_t strlen(const char *); | |
| 75 | ||
| 76 | #define __HAVE_ARCH_STRNCMP | |
| 77 | extern 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__) */ |