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<h1>chdebug.c</h1> </div>
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<a href="chdebug_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
Initial import
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<a name="l00002"></a>00002 <span class="comment"> ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.</span>
<a name="l00003"></a>00003 <span class="comment"></span>
<a name="l00004"></a>00004 <span class="comment"> This file is part of ChibiOS/RT.</span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment"> ChibiOS/RT is free software; you can redistribute it and/or modify</span>
<a name="l00007"></a>00007 <span class="comment"> it under the terms of the GNU General Public License as published by</span>
<a name="l00008"></a>00008 <span class="comment"> the Free Software Foundation; either version 3 of the License, or</span>
<a name="l00009"></a>00009 <span class="comment"> (at your option) any later version.</span>
<a name="l00010"></a>00010 <span class="comment"></span>
<a name="l00011"></a>00011 <span class="comment"> ChibiOS/RT is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00014"></a>00014 <span class="comment"> GNU General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"></span>
<a name="l00016"></a>00016 <span class="comment"> You should have received a copy of the GNU General Public License</span>
<a name="l00017"></a>00017 <span class="comment"> along with this program. If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<a name="l00018"></a>00018 <span class="comment"></span>
<a name="l00019"></a>00019 <span class="comment"> ---</span>
<a name="l00020"></a>00020 <span class="comment"></span>
<a name="l00021"></a>00021 <span class="comment"> A special exception to the GPL can be applied should you wish to distribute</span>
<a name="l00022"></a>00022 <span class="comment"> a combined work that includes ChibiOS/RT, without being obliged to provide</span>
<a name="l00023"></a>00023 <span class="comment"> the source code for any proprietary components. See the file exception.txt</span>
<a name="l00024"></a>00024 <span class="comment"> for full details of how and when the exception can be applied.</span>
<a name="l00025"></a>00025 <span class="comment">*/</span>
<a name="l00026"></a>00026 <span class="comment"></span>
<a name="l00027"></a>00027 <span class="comment">/**</span>
<a name="l00028"></a>00028 <span class="comment"> * @file chdebug.c</span>
<a name="l00029"></a>00029 <span class="comment"> * @brief ChibiOS/RT Debug code.</span>
<a name="l00030"></a>00030 <span class="comment"> *</span>
<a name="l00031"></a>00031 <span class="comment"> * @addtogroup debug</span>
<a name="l00032"></a>00032 <span class="comment"> * @details Debug APIs and services:</span>
<a name="l00033"></a>00033 <span class="comment"> * - Trace buffer.</span>
<a name="l00034"></a>00034 <span class="comment"> * - Parameters check.</span>
<a name="l00035"></a>00035 <span class="comment"> * - Kernel assertions.</span>
<a name="l00036"></a>00036 <span class="comment"> * .</span>
<a name="l00037"></a>00037 <span class="comment"> * @{</span>
<a name="l00038"></a>00038 <span class="comment"> */</span>
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="preprocessor">#include &quot;<a class="code" href="ch_8h.html" title="ChibiOS/RT main include file.">ch.h</a>&quot;</span>
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="preprocessor">#if CH_DBG_ENABLE_TRACE</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span><span class="comment">/**</span>
<a name="l00044"></a>00044 <span class="comment"> * @brief Public trace buffer.</span>
<a name="l00045"></a>00045 <span class="comment"> */</span>
<a name="l00046"></a><a class="code" href="group__debug.html#ga8293a8dffdb533372e469fafd5a12f21">00046</a> <a class="code" href="struct_trace_buffer.html" title="Trace buffer header.">TraceBuffer</a> <a class="code" href="group__debug.html#ga8293a8dffdb533372e469fafd5a12f21" title="Public trace buffer.">trace_buffer</a>;
<a name="l00047"></a>00047 <span class="comment"></span>
<a name="l00048"></a>00048 <span class="comment">/**</span>
<a name="l00049"></a>00049 <span class="comment"> * @brief Trace circular buffer subsystem initialization.</span>
<a name="l00050"></a>00050 <span class="comment"> */</span>
<a name="l00051"></a><a class="code" href="group__debug.html#ga5ef5d43e7c59f0ee9c490ea4e423c008">00051</a> <span class="keywordtype">void</span> <a class="code" href="group__debug.html#ga5ef5d43e7c59f0ee9c490ea4e423c008" title="Trace circular buffer subsystem initialization.">trace_init</a>(<span class="keywordtype">void</span>) {
<a name="l00052"></a>00052
<a name="l00053"></a>00053 trace_buffer.<a class="code" href="struct_trace_buffer.html#aca809b9d6e80fb01c98e67f25f53aa37" title="Trace buffer size (entries).">tb_size</a> = TRACE_BUFFER_SIZE;
<a name="l00054"></a>00054 trace_buffer.<a class="code" href="struct_trace_buffer.html#a647a0c08bf641558f87ca690fd933097" title="Pointer to the ring buffer front.">tb_ptr</a> = &amp;trace_buffer.<a class="code" href="struct_trace_buffer.html#a3e5f6e61398a217126933b092afd1cea" title="Ring buffer.">tb_buffer</a>[0];
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056 <span class="comment"></span>
<a name="l00057"></a>00057 <span class="comment">/**</span>
<a name="l00058"></a>00058 <span class="comment"> * @brief Inserts in the circular debug trace buffer a context switch record.</span>
<a name="l00059"></a>00059 <span class="comment"> *</span>
<a name="l00060"></a>00060 <span class="comment"> * @param[in] otp the thread being switched out</span>
<a name="l00061"></a>00061 <span class="comment"> */</span>
<a name="l00062"></a><a class="code" href="group__debug.html#gac7f8f0653faf2e3a93108ff5333821b7">00062</a> <span class="keywordtype">void</span> <a class="code" href="group__debug.html#gac7f8f0653faf2e3a93108ff5333821b7" title="Inserts in the circular debug trace buffer a context switch record.">chDbgTrace</a>(<a class="code" href="struct_thread.html" title="Structure representing a thread.">Thread</a> *otp) {
<a name="l00063"></a>00063
<a name="l00064"></a>00064 trace_buffer.<a class="code" href="struct_trace_buffer.html#a647a0c08bf641558f87ca690fd933097" title="Pointer to the ring buffer front.">tb_ptr</a>-&gt;<a class="code" href="struct_ctx_swc_event.html#ac28fce73613158bf501382c110c4a0fa" title="Object where going to sleep.">cse_wtobjp</a> = otp-&gt;<a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#a4f016b01444741e6f9b420436b748862" title="Pointer to a generic &amp;quot;wait&amp;quot; object.">wtobjp</a>;
<a name="l00065"></a>00065 trace_buffer.<a class="code" href="struct_trace_buffer.html#a647a0c08bf641558f87ca690fd933097" title="Pointer to the ring buffer front.">tb_ptr</a>-&gt;<a class="code" href="struct_ctx_swc_event.html#a463c08b6776d7337d18b1965243abfc9" title="Time of the switch event.">cse_time</a> = <a class="code" href="group__time.html#ga137c8f67c450f34416a786d169be90e2" title="Current system time.">chTimeNow</a>();
<a name="l00066"></a>00066 trace_buffer.<a class="code" href="struct_trace_buffer.html#a647a0c08bf641558f87ca690fd933097" title="Pointer to the ring buffer front.">tb_ptr</a>-&gt;<a class="code" href="struct_ctx_swc_event.html#a83d48714c7e96b1bb4f8756ea5cbaf56" title="Switched out thread state.">cse_state</a> = otp-&gt;<a class="code" href="struct_thread.html#a3c3e9d6abccb62c3a5fab6ef043a391f" title="Current thread state.">p_state</a>;
<a name="l00067"></a>00067 trace_buffer.<a class="code" href="struct_trace_buffer.html#a647a0c08bf641558f87ca690fd933097" title="Pointer to the ring buffer front.">tb_ptr</a>-&gt;<a class="code" href="struct_ctx_swc_event.html#ad982bde0268f45b772c07d993de65a41" title="Switched in thread id.">cse_tid</a> = (unsigned)<a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a> &gt;&gt; 6;
Imported ChibiOS/RT 2.0.6.
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<a name="l00068"></a>00068 <span class="keywordflow">if</span> (++trace_buffer.<a class="code" href="struct_trace_buffer.html#a647a0c08bf641558f87ca690fd933097" title="Pointer to the ring buffer front.">tb_ptr</a> &gt;= &amp;trace_buffer.<a class="code" href="struct_trace_buffer.html#a3e5f6e61398a217126933b092afd1cea" title="Ring buffer.">tb_buffer</a>[<a class="code" href="group__debug.html#ga85f9a678e5f44d97a8a21adab8c065b7" title="Trace buffer entries.">TRACE_BUFFER_SIZE</a>])
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<a name="l00069"></a>00069 trace_buffer.<a class="code" href="struct_trace_buffer.html#a647a0c08bf641558f87ca690fd933097" title="Pointer to the ring buffer front.">tb_ptr</a> = &amp;trace_buffer.<a class="code" href="struct_trace_buffer.html#a3e5f6e61398a217126933b092afd1cea" title="Ring buffer.">tb_buffer</a>[0];
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071 <span class="preprocessor">#endif </span><span class="comment">/* CH_DBG_ENABLE_TRACE */</span>
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="preprocessor">#if CH_DBG_ENABLE_ASSERTS || CH_DBG_ENABLE_CHECKS || CH_DBG_ENABLE_STACK_CHECK</span>
<a name="l00074"></a>00074 <span class="preprocessor"></span><span class="comment">/**</span>
<a name="l00075"></a>00075 <span class="comment"> * @brief Pointer to the panic message.</span>
<a name="l00076"></a>00076 <span class="comment"> * @details This pointer is meant to be accessed through the debugger, it is</span>
<a name="l00077"></a>00077 <span class="comment"> * written once and then the system is halted. This variable can be</span>
<a name="l00078"></a>00078 <span class="comment"> * set to @p NULL if the halt is caused by a stack overflow.</span>
<a name="l00079"></a>00079 <span class="comment"> */</span>
<a name="l00080"></a><a class="code" href="group__debug.html#ga218d35701e90bead41b249f80f58aac4">00080</a> <span class="keywordtype">char</span> *<a class="code" href="group__debug.html#ga218d35701e90bead41b249f80f58aac4" title="Pointer to the panic message.">panic_msg</a>;
<a name="l00081"></a>00081 <span class="comment"></span>
<a name="l00082"></a>00082 <span class="comment">/**</span>
<a name="l00083"></a>00083 <span class="comment"> * @brief Prints a panic message on the console and then halts the system.</span>
<a name="l00084"></a>00084 <span class="comment"> *</span>
<a name="l00085"></a>00085 <span class="comment"> * @param[in] msg the pointer to the panic message string</span>
<a name="l00086"></a>00086 <span class="comment"> */</span>
<a name="l00087"></a><a class="code" href="group__debug.html#ga3cfb02183cd13f939b9b666810511157">00087</a> <span class="keywordtype">void</span> <a class="code" href="group__debug.html#ga3cfb02183cd13f939b9b666810511157" title="Prints a panic message on the console and then halts the system.">chDbgPanic</a>(<span class="keywordtype">char</span> *msg) {
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <a class="code" href="group__debug.html#ga218d35701e90bead41b249f80f58aac4" title="Pointer to the panic message.">panic_msg</a> = msg;
<a name="l00090"></a>00090 <a class="code" href="group__system.html#gad43b78f160a2c983792af3041cc4a536" title="Halts the system.">chSysHalt</a>();
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092 <span class="preprocessor">#endif </span><span class="comment">/* CH_DBG_ENABLE_ASSERTS || CH_DBG_ENABLE_CHECKS || CH_DBG_ENABLE_STACK_CHECK */</span>
<a name="l00093"></a>00093 <span class="comment"></span>
<a name="l00094"></a>00094 <span class="comment">/** @} */</span>
</pre></div></div>
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