| /* Search a character in a block of memory. For IBM S390 |
| Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
| |
| 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, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| /* |
| * R2 = address to memory area |
| * R3 = character to find |
| * R4 = number of bytes to search |
| */ |
| |
| #include "sysdep.h" |
| #include "asm-syntax.h" |
| |
| .text |
| ENTRY(memchr) |
| lhi %r0,0xff |
| nr %r0,%r3 |
| lr %r1,%r2 |
| la %r2,0(%r4,%r1) |
| 0: srst %r2,%r1 |
| jo 0b |
| brc 13,1f |
| slr %r2,%r2 |
| 1: br %r14 |
| END(memchr) |
| libc_hidden_builtin_def (memchr) |
