/* SPDX-License-Identifier: GPL-2.0-or-later */ /*************************************************************************** * Copyright (C) 2010 by Spencer Oliver * * spen@spen-soft.co.uk * ***************************************************************************/ /* parameters: r0 - address in r1 - byte count r2 - mask - result out */ .text .arm loop: ldrb r3, [r0], #1 and r2, r2, r3 subs r1, r1, #1 bne loop end: bkpt #0 .end