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authorhunt <hunt>2005-05-26 07:18:22 +0000
committerhunt <hunt>2005-05-26 07:18:22 +0000
commit849e99602e4b0487dad23e28cb6a94bf013f40a4 (patch)
treeb457af2da7d7d8b2cc8df0430e3bf54f3ab07cfa /runtime/docs/html/stack_8c-source.html
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-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
-<title>SystemTap: stack.c Source File</title>
-<link href="doxygen.css" rel="stylesheet" type="text/css">
-</head><body>
-<!-- Generated by Doxygen 1.4.1 -->
-<div class="qindex"><a class="qindex" href="index.html">Main&nbsp;Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="dirs.html">Directories</a> | <a class="qindex" href="files.html">File&nbsp;List</a> | <a class="qindex" href="globals.html">Globals</a> | <a class="qindex" href="pages.html">Related&nbsp;Pages</a></div>
-<h1>stack.c</h1><a href="stack_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 <span class="preprocessor">#ifndef _STACK_C_ </span><span class="comment">/* -*- linux-c -*- */</span>
-00002 <span class="preprocessor">#define _STACK_C_</span>
-00003 <span class="preprocessor"></span>
-00004 <span class="comment"></span>
-00005 <span class="comment">/** @file stack.c</span>
-00006 <span class="comment"> * @brief Stack Tracing Functions</span>
-00007 <span class="comment"> */</span>
-00008 <span class="comment"></span>
-00009 <span class="comment">/** @addtogroup stack Stack Tracing Functions</span>
-00010 <span class="comment"> * @{</span>
-00011 <span class="comment"> */</span>
-00012
-00013 <span class="preprocessor">#include "sym.c"</span>
-00014
-00015 <span class="keyword">static</span> int (*_stp_kta)(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> addr)=(<span class="keywordtype">void</span> *)KTA;
-00016
-00017 <span class="preprocessor">#ifdef __x86_64__</span>
-00018 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">void</span> __stp_stack_print (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *stack, <span class="keywordtype">int</span> verbose, <span class="keywordtype">int</span> levels)
-00019 {
-00020 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> addr;
-00021
-00022 <span class="keywordflow">if</span> (verbose)
-00023 _stp_printf ("trace for %d (%s)\n", current-&gt;pid, current-&gt;comm);
-00024
-00025 while (((<span class="keywordtype">long</span>) stack &amp; (THREAD_SIZE-1)) != 0) {
-00026 addr = *stack++;
-00027 <span class="keywordflow">if</span> (_stp_kta(addr)) {
-00028 <span class="keywordflow">if</span> (verbose) {
-00029 <a class="code" href="group__sym.html#ga2">_stp_symbol_print</a> (addr);
-00030 <a class="code" href="group__print.html#ga11">_stp_print</a> (<span class="stringliteral">"\n"</span>);
-00031 } <span class="keywordflow">else</span>
-00032 <a class="code" href="group__print.html#ga3">_stp_printf</a> (<span class="stringliteral">"0x%lx "</span>, addr);
-00033 }
-00034 }
-00035 <a class="code" href="group__print.html#ga2">_stp_print_flush</a>();
-00036 }
-00037
-00038
-00039 <span class="keyword">static</span> <span class="keywordtype">void</span> __stp_stack_sprint (String str, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *stack, <span class="keywordtype">int</span> verbose, <span class="keywordtype">int</span> levels)
-00040 {
-00041 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> addr;
-00042 <span class="keywordflow">while</span> (((<span class="keywordtype">long</span>) stack &amp; (THREAD_SIZE-1)) != 0) {
-00043 addr = *stack++;
-00044 <span class="keywordflow">if</span> (_stp_kta(addr)) {
-00045 <span class="keywordflow">if</span> (verbose)
-00046 _stp_symbol_sprint (str, addr);
-00047 else
-00048 _stp_sprintf (str, "0x%lx ", addr);
-00049 }
-00050 }
-00051 }
-00052
-00053 #else <span class="comment">/* i386 */</span>
-00054
-00055 static inline <span class="keywordtype">int</span> valid_stack_ptr (struct thread_info *tinfo, <span class="keywordtype">void</span> *p)
-00056 {
-00057 <span class="keywordflow">return</span> p &gt; (<span class="keywordtype">void</span> *)tinfo &amp;&amp;
-00058 p &lt; (<span class="keywordtype">void</span> *)tinfo + THREAD_SIZE - 3;
-00059 }
-00060
-00061 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> _stp_print_context_stack (
-00062 <span class="keyword">struct</span> thread_info *tinfo,
-00063 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *stack,
-00064 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> ebp )
-00065 {
-00066 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> addr;
-00067
-00068 <span class="preprocessor">#ifdef CONFIG_FRAME_POINTER</span>
-00069 <span class="preprocessor"></span> <span class="keywordflow">while</span> (valid_stack_ptr(tinfo, (<span class="keywordtype">void</span> *)ebp)) {
-00070 addr = *(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *)(ebp + 4);
-00071 <a class="code" href="group__sym.html#ga2">_stp_symbol_print</a> (addr);
-00072 <a class="code" href="group__print.html#ga5">_stp_print_cstr</a>(<span class="stringliteral">"\n"</span>);
-00073 ebp = *(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *)ebp;
-00074 }
-00075 <span class="preprocessor">#else</span>
-00076 <span class="preprocessor"></span> <span class="keywordflow">while</span> (valid_stack_ptr(tinfo, stack)) {
-00077 addr = *stack++;
-00078 <span class="keywordflow">if</span> (_stp_kta (addr)) {
-00079 <a class="code" href="group__sym.html#ga2">_stp_symbol_print</a> (addr);
-00080 <a class="code" href="group__print.html#ga5">_stp_print_cstr</a> (<span class="stringliteral">"\n"</span>);
-00081 }
-00082 }
-00083 <span class="preprocessor">#endif</span>
-00084 <span class="preprocessor"></span> <a class="code" href="group__print.html#ga2">_stp_print_flush</a>();
-00085 <span class="keywordflow">return</span> ebp;
-00086 }
-00087
-00088 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> _stp_sprint_context_stack (
-00089 String str,
-00090 <span class="keyword">struct</span> thread_info *tinfo,
-00091 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *stack,
-00092 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> ebp )
-00093 {
-00094 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> addr;
-00095
-00096 <span class="preprocessor">#ifdef CONFIG_FRAME_POINTER</span>
-00097 <span class="preprocessor"></span> <span class="keywordflow">while</span> (valid_stack_ptr(tinfo, (<span class="keywordtype">void</span> *)ebp)) {
-00098 addr = *(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *)(ebp + 4);
-00099 <a class="code" href="group__sym.html#ga1">_stp_symbol_sprint</a> (str, addr);
-00100 <a class="code" href="group__string.html#ga9">_stp_string_cat</a> (<span class="stringliteral">"\n"</span>);
-00101 ebp = *(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *)ebp;
-00102 }
-00103 <span class="preprocessor">#else</span>
-00104 <span class="preprocessor"></span> <span class="keywordflow">while</span> (valid_stack_ptr(tinfo, stack)) {
-00105 addr = *stack++;
-00106 <span class="keywordflow">if</span> (_stp_kta (addr)) {
-00107 <a class="code" href="group__sym.html#ga1">_stp_symbol_sprint</a> (addr);
-00108 <a class="code" href="group__string.html#ga9">_stp_string_cat</a> (<span class="stringliteral">"\n"</span>);
-00109 }
-00110 }
-00111 <span class="preprocessor">#endif</span>
-00112 <span class="preprocessor"></span> <span class="keywordflow">return</span> ebp;
-00113 }
-00114
-00115 <span class="keyword">static</span> <span class="keywordtype">void</span> __stp_stack_print (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *stack, <span class="keywordtype">int</span> verbose, <span class="keywordtype">int</span> levels)
-00116 {
-00117 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> ebp;
-00118
-00119 <span class="comment">/* Grab ebp right from our regs */</span>
-00120 <span class="keyword">asm</span> (<span class="stringliteral">"movl %%ebp, %0"</span> : <span class="stringliteral">"=r"</span> (ebp) : );
-00121
-00122 <span class="keywordflow">while</span> (stack) {
-00123 <span class="keyword">struct </span>thread_info *context = (<span class="keyword">struct </span>thread_info *)
-00124 ((<span class="keywordtype">unsigned</span> long)stack &amp; (~(THREAD_SIZE - 1)));
-00125 ebp = _stp_print_context_stack (context, stack, ebp);
-00126 stack = (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>*)context-&gt;previous_esp;
-00127 }
-00128 }
-00129
-00130 <span class="keyword">static</span> <span class="keywordtype">void</span> __stp_stack_sprint (String str, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *stack, <span class="keywordtype">int</span> verbose, <span class="keywordtype">int</span> levels)
-00131 {
-00132 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> ebp;
-00133
-00134 <span class="comment">/* Grab ebp right from our regs */</span>
-00135 <span class="keyword">asm</span> (<span class="stringliteral">"movl %%ebp, %0"</span> : <span class="stringliteral">"=r"</span> (ebp) : );
-00136
-00137 <span class="keywordflow">while</span> (stack) {
-00138 <span class="keyword">struct </span>thread_info *context = (<span class="keyword">struct </span>thread_info *)
-00139 ((<span class="keywordtype">unsigned</span> long)stack &amp; (~(THREAD_SIZE - 1)));
-00140 ebp = _stp_sprint_context_stack (str, context, stack, ebp);
-00141 stack = (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>*)context-&gt;previous_esp;
-00142 }
-00143 }
-00144
-00145 <span class="preprocessor">#endif </span><span class="comment">/* i386 */</span>
-00146 <span class="comment"></span>
-00147 <span class="comment">/** Print stack dump.</span>
-00148 <span class="comment"> * Prints a stack dump to the print buffer.</span>
-00149 <span class="comment"> * @param verbose Verbosity</span>
-00150 <span class="comment"> * @param levels Number of levels to trace.</span>
-00151 <span class="comment"> * @todo Implement verbosity and levels parameters.</span>
-00152 <span class="comment"> * @bug levels parameter is not functional</span>
-00153 <span class="comment"> */</span>
-00154
-<a name="l00155"></a><a class="code" href="group__stack.html#ga6">00155</a> <span class="keywordtype">void</span> <a class="code" href="group__stack.html#ga6">_stp_stack_print</a> (<span class="keywordtype">int</span> verbose, <span class="keywordtype">int</span> levels)
-00156 {
-00157 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> stack;
-00158 __stp_stack_print (&amp;stack, verbose, levels);
-00159 }
-00160 <span class="comment"></span>
-00161 <span class="comment">/** Writes stack dump to a String</span>
-00162 <span class="comment"> *</span>
-00163 <span class="comment"> * @param str String</span>
-00164 <span class="comment"> * @param verbose Verbosity</span>
-00165 <span class="comment"> * @param levels Number of levels to trace.</span>
-00166 <span class="comment"> * @returns Same String as was input.</span>
-00167 <span class="comment"> * @todo Implement verbosity and levels parameters.</span>
-00168 <span class="comment"> * @bug levels parameter is not functional</span>
-00169 <span class="comment"> */</span>
-00170
-<a name="l00171"></a><a class="code" href="group__stack.html#ga7">00171</a> String <a class="code" href="group__stack.html#ga7">_stp_stack_sprint</a> (String str, <span class="keywordtype">int</span> verbose, <span class="keywordtype">int</span> levels)
-00172 {
-00173 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> stack;
-00174 __stp_stack_sprint (str, &amp;stack, verbose, levels);
-00175 <a class="code" href="group__io.html#ga2">_stp_log</a> (<span class="stringliteral">"sss: str=%s\n"</span>, str-&gt;buf);
-00176 <span class="keywordflow">return</span> str;
-00177 }
-00178 <span class="comment"></span>
-00179 <span class="comment">/** @} */</span>
-00180 <span class="preprocessor">#endif </span><span class="comment">/* _STACK_C_ */</span>
-</pre></div></body></html>
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