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- /***************************************************************************
- * Copyright (C) 2014 by Jeff Ciesielski *
- * jeffciesielski@gmail.com *
- * *
- * Based on the armv7m erase checker by: *
- * Copyright (C) 2010 by Spencer Oliver *
- * spen@spen-soft.co.uk *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program 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 General Public License for more details. *
- * *
- ***************************************************************************/
- /*
- parameters:
- r0 - address in
- r1 - byte count
- r2 - mask - result out
- */
- .text
- .syntax unified
- .cpu cortex-m0
- .thumb
- .thumb_func
- .align 2
- loop:
- ldrb r3, [r0]
- adds r0, #1
- orrs r2, r2, r3
- subs r1, r1, #1
- bne loop
- end:
- bkpt #0
- .end
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