mirror of https://github.com/ArduPilot/ardupilot
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405 lines
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<h1>macros.inc</h1> </div>
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<div class="contents">
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<a href="macros_8inc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* Copyright (c) 2002, 2005, 2006, 2007 Marek Michalkiewicz</span>
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<a name="l00002"></a>00002 <span class="comment"> Copyright (c) 2006 Dmitry Xmelkov</span>
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<a name="l00003"></a>00003 <span class="comment"> All rights reserved.</span>
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<a name="l00004"></a>00004 <span class="comment"></span>
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<a name="l00005"></a>00005 <span class="comment"> Redistribution and use in source and binary forms, with or without</span>
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<a name="l00006"></a>00006 <span class="comment"> modification, are permitted provided that the following conditions are met:</span>
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<a name="l00007"></a>00007 <span class="comment"></span>
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<a name="l00008"></a>00008 <span class="comment"> * Redistributions of source code must retain the above copyright</span>
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<a name="l00009"></a>00009 <span class="comment"> notice, this list of conditions and the following disclaimer.</span>
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<a name="l00010"></a>00010 <span class="comment"></span>
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<a name="l00011"></a>00011 <span class="comment"> * Redistributions in binary form must reproduce the above copyright</span>
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<a name="l00012"></a>00012 <span class="comment"> notice, this list of conditions and the following disclaimer in</span>
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<a name="l00013"></a>00013 <span class="comment"> the documentation and/or other materials provided with the</span>
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<a name="l00014"></a>00014 <span class="comment"> distribution.</span>
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<a name="l00015"></a>00015 <span class="comment"></span>
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<a name="l00016"></a>00016 <span class="comment"> * Neither the name of the copyright holders nor the names of</span>
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<a name="l00017"></a>00017 <span class="comment"> contributors may be used to endorse or promote products derived</span>
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<a name="l00018"></a>00018 <span class="comment"> from this software without specific prior written permission.</span>
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<a name="l00019"></a>00019 <span class="comment"></span>
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<a name="l00020"></a>00020 <span class="comment"> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"</span>
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<a name="l00021"></a>00021 <span class="comment"> AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span>
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<a name="l00022"></a>00022 <span class="comment"> IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span>
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<a name="l00023"></a>00023 <span class="comment"> ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE</span>
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<a name="l00024"></a>00024 <span class="comment"> LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR</span>
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<a name="l00025"></a>00025 <span class="comment"> CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF</span>
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<a name="l00026"></a>00026 <span class="comment"> SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span>
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<a name="l00027"></a>00027 <span class="comment"> INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span>
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<a name="l00028"></a>00028 <span class="comment"> CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)</span>
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<a name="l00029"></a>00029 <span class="comment"> ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span>
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<a name="l00030"></a>00030 <span class="comment"> POSSIBILITY OF SUCH DAMAGE. */</span>
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<a name="l00031"></a>00031
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<a name="l00032"></a>00032 <span class="comment">/*</span>
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<a name="l00033"></a>00033 <span class="comment"> macros.inc - macros for use in assembler sources</span>
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<a name="l00034"></a>00034 <span class="comment"></span>
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<a name="l00035"></a>00035 <span class="comment"> Contributors:</span>
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<a name="l00036"></a>00036 <span class="comment"> Created by Marek Michalkiewicz <marekm@linux.org.pl></span>
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<a name="l00037"></a>00037 <span class="comment"> */</span>
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<a name="l00038"></a>00038
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<a name="l00039"></a>00039 <span class="preprocessor">#include <avr/io.h></span>
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<a name="l00040"></a>00040 <span class="comment">//#include "sectionname.h"</span>
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<a name="l00041"></a>00041
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<a name="l00042"></a>00042 <span class="comment">/* if not defined, assume old version with underscores */</span>
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<a name="l00043"></a>00043 <span class="preprocessor">#ifndef __USER_LABEL_PREFIX__</span>
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<a name="l00044"></a>00044 <span class="preprocessor"></span><span class="preprocessor">#define __USER_LABEL_PREFIX__ _</span>
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<a name="l00045"></a>00045 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
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<a name="l00046"></a>00046 <span class="preprocessor"></span>
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<a name="l00047"></a>00047 <span class="preprocessor">#ifndef __REGISTER_PREFIX__</span>
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<a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#define __REGISTER_PREFIX__</span>
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<a name="l00049"></a>00049 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
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<a name="l00050"></a>00050 <span class="preprocessor"></span>
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<a name="l00051"></a>00051 <span class="comment">/* the assembler line separator (just in case it ever changes) */</span>
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<a name="l00052"></a>00052 <span class="preprocessor">#define _L $</span>
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<a name="l00053"></a>00053 <span class="preprocessor"></span>
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<a name="l00054"></a>00054 <span class="preprocessor">#define CONCAT1(a, b) CONCAT2(a, b)</span>
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<a name="l00055"></a>00055 <span class="preprocessor"></span><span class="preprocessor">#define CONCAT2(a, b) a ## b</span>
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<a name="l00056"></a>00056 <span class="preprocessor"></span>
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<a name="l00057"></a>00057 <span class="preprocessor">#define _U(x) CONCAT1(__USER_LABEL_PREFIX__, x)</span>
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<a name="l00058"></a>00058 <span class="preprocessor"></span>
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<a name="l00059"></a>00059 <span class="preprocessor">#define _R(x) CONCAT1(__REGISTER_PREFIX__, x)</span>
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<a name="l00060"></a>00060 <span class="preprocessor"></span>
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<a name="l00061"></a>00061 <span class="comment">/* these should help to fix the "can't have function named r1()" bug</span>
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<a name="l00062"></a>00062 <span class="comment"> which may require adding '%' in front of register names. */</span>
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<a name="l00063"></a>00063
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<a name="l00064"></a>00064 <span class="preprocessor">#define r0 _R(r0)</span>
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<a name="l00065"></a>00065 <span class="preprocessor"></span><span class="preprocessor">#define r1 _R(r1)</span>
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<a name="l00066"></a>00066 <span class="preprocessor"></span><span class="preprocessor">#define r2 _R(r2)</span>
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<a name="l00067"></a>00067 <span class="preprocessor"></span><span class="preprocessor">#define r3 _R(r3)</span>
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<a name="l00068"></a>00068 <span class="preprocessor"></span><span class="preprocessor">#define r4 _R(r4)</span>
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<a name="l00069"></a>00069 <span class="preprocessor"></span><span class="preprocessor">#define r5 _R(r5)</span>
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<a name="l00070"></a>00070 <span class="preprocessor"></span><span class="preprocessor">#define r6 _R(r6)</span>
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<a name="l00071"></a>00071 <span class="preprocessor"></span><span class="preprocessor">#define r7 _R(r7)</span>
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<a name="l00072"></a>00072 <span class="preprocessor"></span><span class="preprocessor">#define r8 _R(r8)</span>
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<a name="l00073"></a>00073 <span class="preprocessor"></span><span class="preprocessor">#define r9 _R(r9)</span>
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<a name="l00074"></a>00074 <span class="preprocessor"></span><span class="preprocessor">#define r10 _R(r10)</span>
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<a name="l00075"></a>00075 <span class="preprocessor"></span><span class="preprocessor">#define r11 _R(r11)</span>
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<a name="l00076"></a>00076 <span class="preprocessor"></span><span class="preprocessor">#define r12 _R(r12)</span>
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<a name="l00077"></a>00077 <span class="preprocessor"></span><span class="preprocessor">#define r13 _R(r13)</span>
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<a name="l00078"></a>00078 <span class="preprocessor"></span><span class="preprocessor">#define r14 _R(r14)</span>
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<a name="l00079"></a>00079 <span class="preprocessor"></span><span class="preprocessor">#define r15 _R(r15)</span>
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<a name="l00080"></a>00080 <span class="preprocessor"></span><span class="preprocessor">#define r16 _R(r16)</span>
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<a name="l00081"></a>00081 <span class="preprocessor"></span><span class="preprocessor">#define r17 _R(r17)</span>
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<a name="l00082"></a>00082 <span class="preprocessor"></span><span class="preprocessor">#define r18 _R(r18)</span>
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<a name="l00083"></a>00083 <span class="preprocessor"></span><span class="preprocessor">#define r19 _R(r19)</span>
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<a name="l00084"></a>00084 <span class="preprocessor"></span><span class="preprocessor">#define r20 _R(r20)</span>
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<a name="l00085"></a>00085 <span class="preprocessor"></span><span class="preprocessor">#define r21 _R(r21)</span>
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<a name="l00086"></a>00086 <span class="preprocessor"></span><span class="preprocessor">#define r22 _R(r22)</span>
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<a name="l00087"></a>00087 <span class="preprocessor"></span><span class="preprocessor">#define r23 _R(r23)</span>
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<a name="l00088"></a>00088 <span class="preprocessor"></span><span class="preprocessor">#define r24 _R(r24)</span>
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<a name="l00089"></a>00089 <span class="preprocessor"></span><span class="preprocessor">#define r25 _R(r25)</span>
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<a name="l00090"></a>00090 <span class="preprocessor"></span><span class="preprocessor">#define r26 _R(r26)</span>
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<a name="l00091"></a>00091 <span class="preprocessor"></span><span class="preprocessor">#define r27 _R(r27)</span>
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<a name="l00092"></a>00092 <span class="preprocessor"></span><span class="preprocessor">#define r28 _R(r28)</span>
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<a name="l00093"></a>00093 <span class="preprocessor"></span><span class="preprocessor">#define r29 _R(r29)</span>
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<a name="l00094"></a>00094 <span class="preprocessor"></span><span class="preprocessor">#define r30 _R(r30)</span>
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<a name="l00095"></a>00095 <span class="preprocessor"></span><span class="preprocessor">#define r31 _R(r31)</span>
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<a name="l00096"></a>00096 <span class="preprocessor"></span>
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<a name="l00097"></a>00097 <span class="preprocessor">#ifndef __tmp_reg__</span>
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<a name="l00098"></a>00098 <span class="preprocessor"></span><span class="preprocessor">#define __tmp_reg__ r0</span>
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<a name="l00099"></a>00099 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
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<a name="l00100"></a>00100 <span class="preprocessor"></span>
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<a name="l00101"></a>00101 <span class="preprocessor">#ifndef __zero_reg__</span>
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<a name="l00102"></a>00102 <span class="preprocessor"></span><span class="preprocessor">#define __zero_reg__ r1</span>
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<a name="l00103"></a>00103 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
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<a name="l00104"></a>00104 <span class="preprocessor"></span>
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<a name="l00105"></a>00105 <span class="preprocessor">#if __AVR_MEGA__</span>
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<a name="l00106"></a>00106 <span class="preprocessor"></span><span class="preprocessor"> #define XJMP jmp</span>
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<a name="l00107"></a>00107 <span class="preprocessor"></span><span class="preprocessor"> #define XCALL call</span>
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<a name="l00108"></a>00108 <span class="preprocessor"></span><span class="preprocessor">#else</span>
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<a name="l00109"></a>00109 <span class="preprocessor"></span><span class="preprocessor"> #define XJMP rjmp</span>
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<a name="l00110"></a>00110 <span class="preprocessor"></span><span class="preprocessor"> #define XCALL rcall</span>
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<a name="l00111"></a>00111 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
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<a name="l00112"></a>00112 <span class="preprocessor"></span>
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<a name="l00113"></a>00113 <span class="comment">/* used only by fplib/strtod.S - libgcc internal function calls */</span>
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<a name="l00114"></a>00114 <span class="preprocessor">#define PROLOGUE_SAVES(offset) XJMP (__prologue_saves__ + 2 * (offset))</span>
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<a name="l00115"></a>00115 <span class="preprocessor"></span><span class="preprocessor">#define EPILOGUE_RESTORES(offset) XJMP (__epilogue_restores__ + 2 * (offset))</span>
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<a name="l00116"></a>00116 <span class="preprocessor"></span>
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<a name="l00117"></a>00117 <span class="preprocessor">#if FLASHEND > 0x10000 </span><span class="comment">/* ATmega103 */</span>
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<a name="l00118"></a>00118 <span class="preprocessor"> #define BIG_CODE 1</span>
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<a name="l00119"></a>00119 <span class="preprocessor"></span><span class="preprocessor">#else</span>
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<a name="l00120"></a>00120 <span class="preprocessor"></span><span class="preprocessor"> #define BIG_CODE 0</span>
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<a name="l00121"></a>00121 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
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<a name="l00122"></a>00122 <span class="preprocessor"></span>
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<a name="l00123"></a>00123 <span class="preprocessor">#ifndef __AVR_HAVE_MOVW__</span>
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<a name="l00124"></a>00124 <span class="preprocessor"></span><span class="preprocessor"># if defined(__AVR_ENHANCED__) && __AVR_ENHANCED__</span>
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<a name="l00125"></a>00125 <span class="preprocessor"></span><span class="preprocessor"># define __AVR_HAVE_MOVW__ 1</span>
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<a name="l00126"></a>00126 <span class="preprocessor"></span><span class="preprocessor"># endif</span>
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<a name="l00127"></a>00127 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
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<a name="l00128"></a>00128 <span class="preprocessor"></span>
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<a name="l00129"></a>00129 <span class="preprocessor">#ifndef __AVR_HAVE_LPMX__</span>
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<a name="l00130"></a>00130 <span class="preprocessor"></span><span class="preprocessor"># if defined(__AVR_ENHANCED__) && __AVR_ENHANCED__</span>
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<a name="l00131"></a>00131 <span class="preprocessor"></span><span class="preprocessor"># define __AVR_HAVE_LPMX__ 1</span>
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<a name="l00132"></a>00132 <span class="preprocessor"></span><span class="preprocessor"># endif</span>
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<a name="l00133"></a>00133 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
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<a name="l00134"></a>00134 <span class="preprocessor"></span>
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<a name="l00135"></a>00135 <span class="preprocessor">#ifndef __AVR_HAVE_MUL__</span>
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<a name="l00136"></a>00136 <span class="preprocessor"></span><span class="preprocessor"># if defined(__AVR_ENHANCED__) && __AVR_ENHANCED__</span>
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<a name="l00137"></a>00137 <span class="preprocessor"></span><span class="preprocessor"># define __AVR_HAVE_MUL__ 1</span>
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<a name="l00138"></a>00138 <span class="preprocessor"></span><span class="preprocessor"># endif</span>
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<a name="l00139"></a>00139 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
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<a name="l00140"></a>00140 <span class="preprocessor"></span>
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<a name="l00141"></a>00141 <span class="comment">/*</span>
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<a name="l00142"></a>00142 <span class="comment"> Smart version of movw:</span>
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<a name="l00143"></a>00143 <span class="comment"> - uses "movw" if possible (supported by MCU, and both registers even)</span>
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<a name="l00144"></a>00144 <span class="comment"> - handles overlapping register pairs correctly</span>
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<a name="l00145"></a>00145 <span class="comment"> - no instruction generated if source and destination are the same</span>
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<a name="l00146"></a>00146 <span class="comment"> (may expand to 0, 1 or 2 instructions).</span>
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<a name="l00147"></a>00147 <span class="comment"> */</span>
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<a name="l00148"></a>00148
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<a name="l00149"></a>00149 .macro X_movw dst src
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<a name="l00150"></a>00150 .L_movw_dst = -1
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<a name="l00151"></a>00151 .L_movw_src = -1
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<a name="l00152"></a>00152 .L_movw_n = 0
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<a name="l00153"></a>00153 .irp reg, r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, \
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|
<a name="l00154"></a>00154 r10,r11,r12,r13,r14,r15,r16,r17,r18,r19, \
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<a name="l00155"></a>00155 r20,r21,r22,r23,r24,r25,r26,r27,r28,r29, \
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<a name="l00156"></a>00156 r30,r31
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<a name="l00157"></a>00157 .ifc \reg,\dst
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<a name="l00158"></a>00158 .L_movw_dst = .L_movw_n
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<a name="l00159"></a>00159 .endif
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<a name="l00160"></a>00160 .ifc \reg,\src
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<a name="l00161"></a>00161 .L_movw_src = .L_movw_n
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<a name="l00162"></a>00162 .endif
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<a name="l00163"></a>00163 .L_movw_n = .L_movw_n + 1
|
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<a name="l00164"></a>00164 .endr
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<a name="l00165"></a>00165 .L_movw_n = 0
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<a name="l00166"></a>00166 .irp reg, R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, \
|
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<a name="l00167"></a>00167 R10,R11,R12,R13,R14,R15,R16,R17,R18,R19, \
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<a name="l00168"></a>00168 R20,R21,R22,R23,R24,R25,R26,R27,R28,R29, \
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<a name="l00169"></a>00169 R30,R31
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<a name="l00170"></a>00170 .ifc \reg,\dst
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<a name="l00171"></a>00171 .L_movw_dst = .L_movw_n
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<a name="l00172"></a>00172 .endif
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<a name="l00173"></a>00173 .ifc \reg,\src
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<a name="l00174"></a>00174 .L_movw_src = .L_movw_n
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|
<a name="l00175"></a>00175 .endif
|
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<a name="l00176"></a>00176 .L_movw_n = .L_movw_n + 1
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<a name="l00177"></a>00177 .endr
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<a name="l00178"></a>00178 .if .L_movw_dst < 0
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<a name="l00179"></a>00179 .L_movw_n = 0
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<a name="l00180"></a>00180 .rept 32
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<a name="l00181"></a>00181 .if \dst == .L_movw_n
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<a name="l00182"></a>00182 .L_movw_dst = .L_movw_n
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<a name="l00183"></a>00183 .endif
|
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<a name="l00184"></a>00184 .L_movw_n = .L_movw_n + 1
|
|
<a name="l00185"></a>00185 .endr
|
|
<a name="l00186"></a>00186 .endif
|
|
<a name="l00187"></a>00187 .if .L_movw_src < 0
|
|
<a name="l00188"></a>00188 .L_movw_n = 0
|
|
<a name="l00189"></a>00189 .rept 32
|
|
<a name="l00190"></a>00190 .if \src == .L_movw_n
|
|
<a name="l00191"></a>00191 .L_movw_src = .L_movw_n
|
|
<a name="l00192"></a>00192 .endif
|
|
<a name="l00193"></a>00193 .L_movw_n = .L_movw_n + 1
|
|
<a name="l00194"></a>00194 .endr
|
|
<a name="l00195"></a>00195 .endif
|
|
<a name="l00196"></a>00196 .if (.L_movw_dst < 0) || (.L_movw_src < 0)
|
|
<a name="l00197"></a>00197 .err ; Invalid <span class="stringliteral">'X_movw'</span> arg.
|
|
<a name="l00198"></a>00198 .endif
|
|
<a name="l00199"></a>00199
|
|
<a name="l00200"></a>00200 .if ((.L_movw_src) - (.L_movw_dst)) <span class="comment">/* different registers */</span>
|
|
<a name="l00201"></a>00201 .if (((.L_movw_src) | (.L_movw_dst)) & 0x01)
|
|
<a name="l00202"></a>00202 .if (((.L_movw_src)-(.L_movw_dst)) & 0x80) <span class="comment">/* src < dest */</span>
|
|
<a name="l00203"></a>00203 mov (.L_movw_dst)+1, (.L_movw_src)+1
|
|
<a name="l00204"></a>00204 mov (.L_movw_dst), (.L_movw_src)
|
|
<a name="l00205"></a>00205 .<span class="keywordflow">else</span> <span class="comment">/* src > dest */</span>
|
|
<a name="l00206"></a>00206 mov (.L_movw_dst), (.L_movw_src)
|
|
<a name="l00207"></a>00207 mov (.L_movw_dst)+1, (.L_movw_src)+1
|
|
<a name="l00208"></a>00208 .endif
|
|
<a name="l00209"></a>00209 .<span class="keywordflow">else</span> <span class="comment">/* both even -> overlap not possible */</span>
|
|
<a name="l00210"></a>00210 #<span class="keywordflow">if</span> defined(__AVR_HAVE_MOVW__) && __AVR_HAVE_MOVW__
|
|
<a name="l00211"></a>00211 movw \dst, \src
|
|
<a name="l00212"></a>00212 <span class="preprocessor">#else</span>
|
|
<a name="l00213"></a>00213 <span class="preprocessor"></span> mov (.L_movw_dst), (.L_movw_src)
|
|
<a name="l00214"></a>00214 mov (.L_movw_dst)+1, (.L_movw_src)+1
|
|
<a name="l00215"></a>00215 #endif
|
|
<a name="l00216"></a>00216 .endif
|
|
<a name="l00217"></a>00217 .endif
|
|
<a name="l00218"></a>00218 .endm
|
|
<a name="l00219"></a>00219
|
|
<a name="l00220"></a>00220 <span class="comment">/* Macro 'X_lpm' extends enhanced lpm instruction for classic chips.</span>
|
|
<a name="l00221"></a>00221 <span class="comment"> Usage:</span>
|
|
<a name="l00222"></a>00222 <span class="comment"> X_lpm reg, dst</span>
|
|
<a name="l00223"></a>00223 <span class="comment"> where</span>
|
|
<a name="l00224"></a>00224 <span class="comment"> reg is 0..31, r0..r31 or R0..R31</span>
|
|
<a name="l00225"></a>00225 <span class="comment"> dst is z, Z, z+ or Z+</span>
|
|
<a name="l00226"></a>00226 <span class="comment"> It is possible to omit both arguments.</span>
|
|
<a name="l00227"></a>00227 <span class="comment"></span>
|
|
<a name="l00228"></a>00228 <span class="comment"> Possible results for classic chips:</span>
|
|
<a name="l00229"></a>00229 <span class="comment"> lpm</span>
|
|
<a name="l00230"></a>00230 <span class="comment"> lpm / mov Rd,r0</span>
|
|
<a name="l00231"></a>00231 <span class="comment"> lpm / adiw ZL,1</span>
|
|
<a name="l00232"></a>00232 <span class="comment"> lpm / mov Rd,r0 / adiw ZL,1</span>
|
|
<a name="l00233"></a>00233 <span class="comment"> </span>
|
|
<a name="l00234"></a>00234 <span class="comment"> For enhanced chips it is one instruction always.</span>
|
|
<a name="l00235"></a>00235 <span class="comment"></span>
|
|
<a name="l00236"></a>00236 <span class="comment"> ATTENTION: unlike enhanced chips SREG (S,V,N,Z,C) flags are</span>
|
|
<a name="l00237"></a>00237 <span class="comment"> changed in case of 'Z+' dst. R0 is scratch.</span>
|
|
<a name="l00238"></a>00238 <span class="comment"> */</span>
|
|
<a name="l00239"></a>00239 .macro X_lpm dst=r0, src=Z
|
|
<a name="l00240"></a>00240
|
|
<a name="l00241"></a>00241 <span class="comment">/* dst evaluation */</span>
|
|
<a name="l00242"></a>00242 .L_lpm_dst = -1
|
|
<a name="l00243"></a>00243
|
|
<a name="l00244"></a>00244 .L_lpm_n = 0
|
|
<a name="l00245"></a>00245 .irp reg, r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, \
|
|
<a name="l00246"></a>00246 r10,r11,r12,r13,r14,r15,r16,r17,r18,r19, \
|
|
<a name="l00247"></a>00247 r20,r21,r22,r23,r24,r25,r26,r27,r28,r29, \
|
|
<a name="l00248"></a>00248 r30,r31
|
|
<a name="l00249"></a>00249 .ifc \reg,\dst
|
|
<a name="l00250"></a>00250 .L_lpm_dst = .L_lpm_n
|
|
<a name="l00251"></a>00251 .endif
|
|
<a name="l00252"></a>00252 .L_lpm_n = .L_lpm_n + 1
|
|
<a name="l00253"></a>00253 .endr
|
|
<a name="l00254"></a>00254
|
|
<a name="l00255"></a>00255 .L_lpm_n = 0
|
|
<a name="l00256"></a>00256 .irp reg, R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, \
|
|
<a name="l00257"></a>00257 R10,R11,R12,R13,R14,R15,R16,R17,R18,R19, \
|
|
<a name="l00258"></a>00258 R20,R21,R22,R23,R24,R25,R26,R27,R28,R29, \
|
|
<a name="l00259"></a>00259 R30,R31
|
|
<a name="l00260"></a>00260 .ifc \reg,\dst
|
|
<a name="l00261"></a>00261 .L_lpm_dst = .L_lpm_n
|
|
<a name="l00262"></a>00262 .endif
|
|
<a name="l00263"></a>00263 .L_lpm_n = .L_lpm_n + 1
|
|
<a name="l00264"></a>00264 .endr
|
|
<a name="l00265"></a>00265
|
|
<a name="l00266"></a>00266 .<span class="keywordflow">if</span> .L_lpm_dst < 0
|
|
<a name="l00267"></a>00267 .L_lpm_n = 0
|
|
<a name="l00268"></a>00268 .rept 32
|
|
<a name="l00269"></a>00269 .<span class="keywordflow">if</span> \dst == .L_lpm_n
|
|
<a name="l00270"></a>00270 .L_lpm_dst = .L_lpm_n
|
|
<a name="l00271"></a>00271 .endif
|
|
<a name="l00272"></a>00272 .L_lpm_n = .L_lpm_n + 1
|
|
<a name="l00273"></a>00273 .endr
|
|
<a name="l00274"></a>00274 .endif
|
|
<a name="l00275"></a>00275
|
|
<a name="l00276"></a>00276 .<span class="keywordflow">if</span> (.L_lpm_dst < 0)
|
|
<a name="l00277"></a>00277 .err ; Invalid dst arg of <span class="stringliteral">'X_lpm'</span> macro.
|
|
<a name="l00278"></a>00278 .endif
|
|
<a name="l00279"></a>00279
|
|
<a name="l00280"></a>00280 <span class="comment">/* src evaluation */</span>
|
|
<a name="l00281"></a>00281 .L_lpm_src = -1
|
|
<a name="l00282"></a>00282 .L_lpm_n = 0
|
|
<a name="l00283"></a>00283 .irp reg, z,Z,z+,Z+
|
|
<a name="l00284"></a>00284 .ifc \reg,\src
|
|
<a name="l00285"></a>00285 .L_lpm_src = .L_lpm_n
|
|
<a name="l00286"></a>00286 .endif
|
|
<a name="l00287"></a>00287 .L_lpm_n = .L_lpm_n + 1
|
|
<a name="l00288"></a>00288 .endr
|
|
<a name="l00289"></a>00289
|
|
<a name="l00290"></a>00290 .if (.L_lpm_src < 0)
|
|
<a name="l00291"></a>00291 .err ; Invalid src arg of <span class="stringliteral">'X_lpm'</span> macro.
|
|
<a name="l00292"></a>00292 .endif
|
|
<a name="l00293"></a>00293
|
|
<a name="l00294"></a>00294 <span class="comment">/* instruction(s) */</span>
|
|
<a name="l00295"></a>00295 .if .L_lpm_src < 2
|
|
<a name="l00296"></a>00296 .if .L_lpm_dst == 0
|
|
<a name="l00297"></a>00297 lpm
|
|
<a name="l00298"></a>00298 .else
|
|
<a name="l00299"></a>00299 <span class="preprocessor">#if defined(__AVR_HAVE_LPMX__) && __AVR_HAVE_LPMX__</span>
|
|
<a name="l00300"></a>00300 <span class="preprocessor"></span> lpm .L_lpm_dst, Z
|
|
<a name="l00301"></a>00301 <span class="preprocessor">#else</span>
|
|
<a name="l00302"></a>00302 <span class="preprocessor"></span> lpm
|
|
<a name="l00303"></a>00303 mov .L_lpm_dst, r0
|
|
<a name="l00304"></a>00304 <span class="preprocessor">#endif</span>
|
|
<a name="l00305"></a>00305 <span class="preprocessor"></span> .endif
|
|
<a name="l00306"></a>00306 .else
|
|
<a name="l00307"></a>00307 .if (.L_lpm_dst >= 30)
|
|
<a name="l00308"></a>00308 .err ; Registers 30 and 31 are inhibited as <span class="stringliteral">'X_lpm *,Z+'</span> dst.
|
|
<a name="l00309"></a>00309 .endif
|
|
<a name="l00310"></a>00310 <span class="preprocessor">#if defined(__AVR_HAVE_LPMX__) && __AVR_HAVE_LPMX__</span>
|
|
<a name="l00311"></a>00311 <span class="preprocessor"></span> lpm .L_lpm_dst, Z+
|
|
<a name="l00312"></a>00312 <span class="preprocessor">#else</span>
|
|
<a name="l00313"></a>00313 <span class="preprocessor"></span> lpm
|
|
<a name="l00314"></a>00314 .if .L_lpm_dst
|
|
<a name="l00315"></a>00315 mov .L_lpm_dst, r0
|
|
<a name="l00316"></a>00316 .endif
|
|
<a name="l00317"></a>00317 adiw r30, 1
|
|
<a name="l00318"></a>00318 <span class="preprocessor">#endif</span>
|
|
<a name="l00319"></a>00319 <span class="preprocessor"></span> .endif
|
|
<a name="l00320"></a>00320 .endm
|
|
<a name="l00321"></a>00321
|
|
<a name="l00322"></a>00322 <span class="comment">/*</span>
|
|
<a name="l00323"></a>00323 <span class="comment"> LPM_R0_ZPLUS_INIT is used before the loop to initialize RAMPZ</span>
|
|
<a name="l00324"></a>00324 <span class="comment"> for future devices with RAMPZ:Z auto-increment - [e]lpm r0, Z+.</span>
|
|
<a name="l00325"></a>00325 <span class="comment"></span>
|
|
<a name="l00326"></a>00326 <span class="comment"> LPM_R0_ZPLUS_NEXT is used inside the loop to load a byte from</span>
|
|
<a name="l00327"></a>00327 <span class="comment"> the program memory at [RAMPZ:]Z to R0, and increment [RAMPZ:]Z.</span>
|
|
<a name="l00328"></a>00328 <span class="comment"></span>
|
|
<a name="l00329"></a>00329 <span class="comment"> The argument in both macros is a register that contains the</span>
|
|
<a name="l00330"></a>00330 <span class="comment"> high byte (bits 23-16) of the address, bits 15-0 should be in</span>
|
|
<a name="l00331"></a>00331 <span class="comment"> the Z (r31:r30) register. It can be any register except for:</span>
|
|
<a name="l00332"></a>00332 <span class="comment"> r0, r1 (__zero_reg__ - assumed to always contain 0), r30, r31.</span>
|
|
<a name="l00333"></a>00333 <span class="comment"> */</span>
|
|
<a name="l00334"></a>00334
|
|
<a name="l00335"></a>00335 .macro LPM_R0_ZPLUS_INIT hhi
|
|
<a name="l00336"></a>00336 <span class="preprocessor">#if __AVR_ENHANCED__</span>
|
|
<a name="l00337"></a>00337 <span class="preprocessor"></span><span class="preprocessor"> #if BIG_CODE</span>
|
|
<a name="l00338"></a>00338 <span class="preprocessor"></span> out AVR_RAMPZ_ADDR, \hhi
|
|
<a name="l00339"></a>00339 <span class="preprocessor"> #endif</span>
|
|
<a name="l00340"></a>00340 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
|
|
<a name="l00341"></a>00341 <span class="preprocessor"></span> .endm
|
|
<a name="l00342"></a>00342
|
|
<a name="l00343"></a>00343 .macro LPM_R0_ZPLUS_NEXT hhi
|
|
<a name="l00344"></a>00344 <span class="preprocessor">#if __AVR_ENHANCED__</span>
|
|
<a name="l00345"></a>00345 <span class="preprocessor"></span><span class="preprocessor"> #if BIG_CODE</span>
|
|
<a name="l00346"></a>00346 <span class="preprocessor"></span> <span class="comment">/* ELPM with RAMPZ:Z post-increment, load RAMPZ only once */</span>
|
|
<a name="l00347"></a>00347 elpm r0, Z+
|
|
<a name="l00348"></a>00348 <span class="preprocessor"> #else</span>
|
|
<a name="l00349"></a>00349 <span class="preprocessor"></span> <span class="comment">/* LPM with Z post-increment, max 64K, no RAMPZ (ATmega83/161/163/32) */</span>
|
|
<a name="l00350"></a>00350 lpm r0, Z+
|
|
<a name="l00351"></a>00351 <span class="preprocessor"> #endif</span>
|
|
<a name="l00352"></a>00352 <span class="preprocessor"></span><span class="preprocessor">#else</span>
|
|
<a name="l00353"></a>00353 <span class="preprocessor"></span><span class="preprocessor"> #if BIG_CODE</span>
|
|
<a name="l00354"></a>00354 <span class="preprocessor"></span> <span class="comment">/* ELPM without post-increment, load RAMPZ each time (ATmega103) */</span>
|
|
<a name="l00355"></a>00355 out AVR_RAMPZ_ADDR, \hhi
|
|
<a name="l00356"></a>00356 elpm
|
|
<a name="l00357"></a>00357 adiw r30,1
|
|
<a name="l00358"></a>00358 adc \hhi, __zero_reg__
|
|
<a name="l00359"></a>00359 <span class="preprocessor"> #else</span>
|
|
<a name="l00360"></a>00360 <span class="preprocessor"></span> <span class="comment">/* LPM without post-increment, max 64K, no RAMPZ (AT90S*) */</span>
|
|
<a name="l00361"></a>00361 lpm
|
|
<a name="l00362"></a>00362 adiw r30,1
|
|
<a name="l00363"></a>00363 <span class="preprocessor"> #endif</span>
|
|
<a name="l00364"></a>00364 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
|
|
<a name="l00365"></a>00365 <span class="preprocessor"></span> .endm
|
|
</pre></div></div>
|
|
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