diff options
Diffstat (limited to 'arch/sparc/include/asm/string_32.h')
| -rw-r--r-- | arch/sparc/include/asm/string_32.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/string_32.h b/arch/sparc/include/asm/string_32.h new file mode 100644 index 00000000..edf196ee --- /dev/null +++ b/arch/sparc/include/asm/string_32.h @@ -0,0 +1,131 @@ +/* + * string.h: External definitions for optimized assembly string + * routines for the Linux Kernel. + * + * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + */ + +#ifndef __SPARC_STRING_H__ +#define __SPARC_STRING_H__ + +#include <asm/page.h> + +/* Really, userland/ksyms should not see any of this stuff. */ + +#ifdef __KERNEL__ + +extern void __memmove(void *,const void *,__kernel_size_t); + +#ifndef EXPORT_SYMTAB_STROPS + +/* First the mem*() things. */ +#define __HAVE_ARCH_MEMMOVE +#undef memmove +#define memmove(_to, _from, _n) \ +({ \ + void *_t = (_to); \ + __memmove(_t, (_from), (_n)); \ + _t; \ +}) + +#define __HAVE_ARCH_MEMCPY +#define memcpy(t, f, n) __builtin_memcpy(t, f, n) + +#define __HAVE_ARCH_MEMSET +#define memset(s, c, count) __builtin_memset(s, c, count) + +#define __HAVE_ARCH_MEMSCAN + +#undef memscan +#define memscan(__arg0, __char, __arg2) \ +({ \ + extern void *__memscan_zero(void *, size_t); \ + extern void *__memscan_generic(void *, int, size_t); \ + void *__retval, *__addr = (__arg0); \ + size_t __size = (__arg2); \ + \ + if(__builtin_constant_p(__char) && !(__char)) \ + __retval = __memscan_zero(__addr, __size); \ + else \ + __retval = __memscan_generic(__addr, (__char), __size); \ + \ + __retval; \ +}) + +#define __HAVE_ARCH_MEMCMP +extern int memcmp(const void *,const void *,__kernel_size_t); + +/* Now the str*() stuff... */ +#define __HAVE_ARCH_STRLEN +extern __kernel_size_t strlen(const char *); + +#define __HAVE_ARCH_STRNCMP + +extern int __strncmp(const char *, const char *, __kernel_size_t); + +static inline int __constant_strncmp(const char *src, const char *dest, __kernel_size_t count) +{ + register int retval; + switch(count) { + case 0: return 0; + case 1: return (src[0] - dest[0]); + case 2: retval = (src[0] - dest[0]); + if(!retval && src[0]) + retval = (src[1] - dest[1]); + return retval; + case 3: retval = (src[0] - dest[0]); + if(!retval && src[0]) { + retval = (src[1] - dest[1]); + if(!retval && src[1]) + retval = (src[2] - dest[2]); + } + return retval; + case 4: retval = (src[0] - dest[0]); + if(!retval && src[0]) { + retval = (src[1] - dest[1]); + if(!retval && src[1]) { + retval = (src[2] - dest[2]); + if (!retval && src[2]) + retval = (src[3] - dest[3]); + } + } + return retval; + case 5: retval = (src[0] - dest[0]); + if(!retval && src[0]) { + retval = (src[1] - dest[1]); + if(!retval && src[1]) { + retval = (src[2] - dest[2]); + if (!retval && src[2]) { + retval = (src[3] - dest[3]); + if (!retval && src[3]) + retval = (src[4] - dest[4]); + } + } + } + return retval; + default: + retval = (src[0] - dest[0]); + if(!retval && src[0]) { + retval = (src[1] - dest[1]); + if(!retval && src[1]) { + retval = (src[2] - dest[2]); + if(!retval && src[2]) + retval = __strncmp(src+3,dest+3,count-3); + } + } + return retval; + } +} + +#undef strncmp +#define strncmp(__arg0, __arg1, __arg2) \ +(__builtin_constant_p(__arg2) ? \ + __constant_strncmp(__arg0, __arg1, __arg2) : \ + __strncmp(__arg0, __arg1, __arg2)) + +#endif /* !EXPORT_SYMTAB_STROPS */ + +#endif /* __KERNEL__ */ + +#endif /* !(__SPARC_STRING_H__) */ |