1/* Copyright (c) 2007 Dmitry Xmelkov 2 All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions are met: 6 7 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * Redistributions in binary form must reproduce the above copyright 10 notice, this list of conditions and the following disclaimer in 11 the documentation and/or other materials provided with the 12 distribution. 13 * Neither the name of the copyright holders nor the names of 14 contributors may be used to endorse or promote products derived 15 from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 POSSIBILITY OF SUCH DAMAGE. */ 28 29/* $Id: strcspn_P.S 2503 2016-02-07 22:59:47Z joerg_wunsch $ */ 30 31#if !defined(__AVR_TINY__) 32 33#ifndef __DOXYGEN__ 34 35#include "macros.inc" 36 37#define str_lo r24 38#define str_hi r25 39#define acc_lo r22 40#define acc_hi r23 41 42#define chs r21 /* char from s[] */ 43 44 ASSEMBLY_CLIB_SECTION 45 .global _U(strcspn_P) 46 .type _U(strcspn_P), @function 47 48_U(strcspn_P): 49 X_movw XL, str_lo 50 ; get next symbol from s[] 511: ld chs, X+ ; *s++ 52 tst chs 53 breq 3f 54 ; check an occurance 55 X_movw ZL, acc_lo 562: X_lpm r0, Z+ 57 cp r0, chs 58 cpse r0, __zero_reg__ 59 brne 2b 60 brne 1b ; branch if chs is't present in reject[] 61 ; end of scanning: chs is found or end of s[] is reached 62 ; Return: X - 1 - str == X + ~str 633: com str_lo 64 com str_hi 65 add str_lo, XL 66 adc str_hi, XH 67 ret 68 69 .size _U(strcspn_P), . - _U(strcspn_P) 70#endif /* !__DOXYGEN__ */ 71 72#endif /* !defined(__AVR_TINY__) */ 73