| /* Copyright (c) 2009 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: eeupd_block.S 1979 2009-06-05 23:08:14Z dmix $ */ |
| |
| #ifndef __DOXYGEN__ |
| |
| #include <avr/io.h> |
| |
| #if E2END && __AVR_ARCH__ > 1 |
| |
| #include <avr/eeprom.h> |
| #include "asmdef.h" |
| #include "eedef.h" |
| |
| /* void eeprom_update_block (const void *sram, void *eepr, size_t n) |
| */ |
| |
| #define sram_lo r24 |
| #define eepr_lo r22 |
| |
| ENTRY eeprom_update_block |
| |
| #if RAMEND > 0xFF || E2END > 0xFF |
| X_movw XL, sram_lo |
| add XL, n_lo |
| adc XH, n_hi |
| subi n_lo, lo8(1) |
| sbci n_hi, hi8(1) |
| #else |
| mov XL, sram_lo |
| add XL, n_lo |
| subi n_lo, lo8(1) |
| #endif |
| brlo 3f |
| |
| #if E2END > 0xFF |
| X_movw addr_lo, eepr_lo |
| add addr_lo, n_lo |
| adc addr_hi, n_hi |
| #else |
| mov addr_lo, eepr_lo |
| add addr_lo, n_lo |
| #endif |
| |
| 1: ld r18, -X |
| XCALL eeprom_update_r18 |
| 2: subi n_lo, lo8(1) |
| |
| #if RAMEND > 0xFF || E2END > 0xFF |
| sbci n_hi, hi8(1) |
| #endif |
| |
| brsh 1b |
| 3: ret |
| |
| ENDFUNC |
| |
| #endif /* E2END && __AVR_ARCH__ > 1 */ |
| #endif /* !__DOXYGEN__ */ |