/* Copyright (c) 2007 Dmitry Xmelkov All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* $Id$ */ #if !defined(__AVR_TINY__) #ifndef __DOXYGEN__ #include "macros.inc" #define str_lo r24 #define acc_lo r22 #define ret_lo r24 #define ret_hi r25 /* This realization is compact, but is not very fast: an accept string is not cashed. */ ASSEMBLY_CLIB_SECTION .global _U(strpbrk) .type _U(strpbrk), @function _U(strpbrk): X_movw XL, str_lo clr ret_hi ; a trick to save 1 word ; get next symbol from s[] 1: ld ret_lo, X+ ; *s++ tst ret_lo breq 3f ; check an occurance X_movw ZL, acc_lo 2: ld r0, Z+ cp r0, ret_lo cpse r0, __zero_reg__ brne 2b brne 1b ; branch if end of accept[] is reached ; OK, is found sbiw XL, 1 X_movw ret_lo, XL 3: ret .size _U(strpbrk), . - _U(strpbrk) #endif /* !__DOXYGEN__ */ #endif /* !defined(__AVR_TINY__) */