diff options
Diffstat (limited to 'memchr.c')
| -rw-r--r-- | memchr.c | 35 |
1 files changed, 26 insertions, 9 deletions
@@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1993, 1996 Free Software Foundation, Inc. +/* Copyright (C) 1991,93,96,97,99,2000 Free Software Foundation, Inc. Based on strlen implementation by Torbjorn Granlund (tege@sics.se), with help from Dan Sahlin (dan@sics.se) and commentary by Jim Blandy (jimb@ai.mit.edu); @@ -24,7 +24,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H -#include <config.h> +# include <config.h> #endif #undef __ptr_t @@ -34,36 +34,50 @@ USA. */ # define __ptr_t char * #endif /* C++ or ANSI C. */ -#if defined (_LIBC) +#if defined _LIBC # include <string.h> +# include <memcopy.h> +#else +# define reg_char char +#endif + +#if HAVE_STDLIB_H || defined _LIBC +# include <stdlib.h> #endif -#if defined (HAVE_LIMITS_H) || defined (_LIBC) +#if HAVE_LIMITS_H || defined _LIBC # include <limits.h> #endif #define LONG_MAX_32_BITS 2147483647 #ifndef LONG_MAX -#define LONG_MAX LONG_MAX_32_BITS +# define LONG_MAX LONG_MAX_32_BITS #endif #include <sys/types.h> +#if HAVE_BP_SYM_H || defined _LIBC +# include <bp-sym.h> +#else +# define BP_SYM(sym) sym +#endif +#undef memchr +#undef __memchr /* Search no more than N bytes of S for C. */ - __ptr_t -memchr (s, c, n) +__memchr (s, c_in, n) const __ptr_t s; - int c; + int c_in; size_t n; { const unsigned char *char_ptr; const unsigned long int *longword_ptr; unsigned long int longword, magic_bits, charmask; + unsigned reg_char c; - c = (unsigned char) c; + c = (unsigned char) c_in; /* Handle the first few characters by reading one character at a time. Do this until CHAR_PTR is aligned on a longword boundary. */ @@ -197,3 +211,6 @@ memchr (s, c, n) return 0; } +#ifdef weak_alias +weak_alias (__memchr, BP_SYM (memchr)) +#endif |