diff options
Diffstat (limited to 'ports/sysdeps/tile/tilegx/strchrnul.c')
-rw-r--r-- | ports/sysdeps/tile/tilegx/strchrnul.c | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/ports/sysdeps/tile/tilegx/strchrnul.c b/ports/sysdeps/tile/tilegx/strchrnul.c deleted file mode 100644 index 34c4317417..0000000000 --- a/ports/sysdeps/tile/tilegx/strchrnul.c +++ /dev/null @@ -1,64 +0,0 @@ -/* Copyright (C) 2011-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library. If not, see - <http://www.gnu.org/licenses/>. */ - -#include <string.h> -#include <stdint.h> -#include "string-endian.h" - -char * -__strchrnul (const char *s, int c) -{ - int z, g; - - /* Get an aligned pointer. */ - const uintptr_t s_int = (uintptr_t) s; - const uint64_t *p = (const uint64_t *) (s_int & -8); - - /* Create eight copies of the byte for which we are looking. */ - const uint64_t goal = copy_byte(c); - - /* Read the first aligned word, but force bytes before the string to - match neither zero nor goal (we make sure the high bit of each byte - is 1, and the low 7 bits are all the opposite of the goal byte). */ - const uint64_t before_mask = MASK (s_int); - uint64_t v = (*p | before_mask) ^ (goal & __insn_v1shrui (before_mask, 1)); - - uint64_t zero_matches, goal_matches; - while (1) - { - /* Look for a terminating '\0'. */ - zero_matches = __insn_v1cmpeqi (v, 0); - - /* Look for the goal byte. */ - goal_matches = __insn_v1cmpeq (v, goal); - - if (__builtin_expect ((zero_matches | goal_matches) != 0, 0)) - break; - - v = *++p; - } - - z = CFZ (zero_matches); - g = CFZ (goal_matches); - - /* Return a pointer to the NUL or goal, whichever is first. */ - if (z < g) - g = z; - return ((char *) p) + (g >> 3); -} -weak_alias (__strchrnul, strchrnul) |