/* Copyright (c) 2002, Reiner Patommel 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. */ /* mulsi10.S - optimized 32-bit multiply by 10 Contributors: Created by Reiner Patommel <rpatop@post4.tele.dk> based on mul10.S by Marek Michalkiewicz <marekm@linux.org.pl> */ #if !defined(__DOXYGEN__) #include "macros.inc" #define r_hi_hi r25 #define r_hi_lo r24 #define r_lo_hi r23 #define r_lo_lo r22 #define r_tmp_hi_hi r21 #define r_tmp_hi_lo r20 #define r_tmp_lo_hi r19 #define r_tmp_lo_lo r18 /* r_hi_hi:r_hi_lo:r_lo_hi:r_lo_lo *= 10 */ ASSEMBLY_CLIB_SECTION .global _U(__mulsi_const_10) _U(__mulsi_const_10): mov r_tmp_hi_hi, r_hi_hi mov r_tmp_hi_lo, r_hi_lo mov r_tmp_lo_hi, r_lo_hi mov r_tmp_lo_lo, r_lo_lo add r_lo_lo, r_lo_lo adc r_lo_hi, r_lo_hi adc r_hi_lo, r_hi_lo adc r_hi_hi, r_hi_hi ; d *= 2 add r_lo_lo, r_lo_lo adc r_lo_hi, r_lo_hi adc r_hi_lo, r_hi_lo adc r_hi_hi, r_hi_hi ; d *= 4 add r_lo_lo, r_tmp_lo_lo adc r_lo_hi, r_tmp_lo_hi adc r_hi_lo, r_tmp_hi_lo adc r_hi_hi, r_tmp_hi_hi ; d *= 5 add r_lo_lo, r_lo_lo adc r_lo_hi, r_lo_hi adc r_hi_lo, r_hi_lo adc r_hi_hi, r_hi_hi ; d *= 10 ret #endif /* not __DOXYGEN__ */