📄 traps.c
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<!doctype html public "-//W3C//DTD HTML 3.2//EN"><html><head><title>Linux/kernel/traps.c</title><meta http-equiv=Content-Type content="text/html; charset=gb2312"><base href="http://oldlinux.org/lxr/http/"></head><body bgcolor=white><div align=center> [<b><i>源代码浏览</i></b>] [<a href="diff/kernel/traps.c">区别标定</a>] [<a href="ident">标识符搜索</a>] [<a href="search">文本搜索</a>] [<a href="find">文件搜索</a>]</div><h1 align=center> <a href="http:/"> OldLinux</a> <a href="http:blurb.html"> 交叉引用</a><br> <a href="source/">Linux</a>/<a href="source/kernel/">kernel</a>/<a href="source/kernel/traps.c">traps.c</a></h1><div align=center> <b>版本:</b> [<a href="source/kernel/traps.c?v=1.0">1.0</a>] [<a href="source/kernel/traps.c?v=0.99.11">0.99.11</a>] [<a href="source/kernel/traps.c?v=0.99">0.99</a>] [<a href="source/kernel/traps.c?v=0.97">0.97</a>] [<a href="source/kernel/traps.c?v=0.96a">0.96a</a>] [<a href="source/kernel/traps.c?v=0.95">0.95</a>] [<a href="source/kernel/traps.c?v=0.12">0.12</a>] [<b><i>0.11</i></b>] [<a href="source/kernel/traps.c?v=0.01">0.01</a>] <br> <b>体系结构:</b> [<b><i>i386</i></b>] <br></div><hr><pre> <a name=L1 href="source/kernel/traps.c#L1">1</a> <b><i>/*</i></b> <a name=L2 href="source/kernel/traps.c#L2">2</a> <b><i> * linux/kernel/traps.c</i></b> <a name=L3 href="source/kernel/traps.c#L3">3</a> <b><i> *</i></b> <a name=L4 href="source/kernel/traps.c#L4">4</a> <b><i> * (C) 1991 Linus Torvalds</i></b> <a name=L5 href="source/kernel/traps.c#L5">5</a> <b><i> */</i></b> <a name=L6 href="source/kernel/traps.c#L6">6</a> <a name=L7 href="source/kernel/traps.c#L7">7</a> <b><i>/*</i></b> <a name=L8 href="source/kernel/traps.c#L8">8</a> <b><i> * 'Traps.c' handles hardware traps and faults after we have saved some</i></b> <a name=L9 href="source/kernel/traps.c#L9">9</a> <b><i> * state in 'asm.s'. Currently mostly a debugging-aid, will be extended</i></b> <a name=L10 href="source/kernel/traps.c#L10">10</a> <b><i> * to mainly kill the offending process (probably by giving it a signal,</i></b> <a name=L11 href="source/kernel/traps.c#L11">11</a> <b><i> * but possibly by killing it outright if necessary).</i></b> <a name=L12 href="source/kernel/traps.c#L12">12</a> <b><i> */</i></b> <a name=L13 href="source/kernel/traps.c#L13">13</a> #include <string.h> <a name=L14 href="source/kernel/traps.c#L14">14</a> <a name=L15 href="source/kernel/traps.c#L15">15</a> #include <linux/head.h> <a name=L16 href="source/kernel/traps.c#L16">16</a> #include <linux/sched.h> <a name=L17 href="source/kernel/traps.c#L17">17</a> #include <linux/kernel.h> <a name=L18 href="source/kernel/traps.c#L18">18</a> #include <asm/system.h> <a name=L19 href="source/kernel/traps.c#L19">19</a> #include <asm/segment.h> <a name=L20 href="source/kernel/traps.c#L20">20</a> #include <asm/io.h> <a name=L21 href="source/kernel/traps.c#L21">21</a> <a name=L22 href="source/kernel/traps.c#L22">22</a> #define <a href="ident?i=get_seg_byte">get_seg_byte</a>(seg,addr) ({ \ <a name=L23 href="source/kernel/traps.c#L23">23</a> register char __res; \ <a name=L24 href="source/kernel/traps.c#L24">24</a> __asm__(<i>"push %%fs;mov %%ax,%%fs;movb %%fs:%2,%%al;pop %%fs"</i> \ <a name=L25 href="source/kernel/traps.c#L25">25</a> :<i>"=a"</i> (__res):<i>""</i> (seg),<i>"m"</i> (*(addr))); \ <a name=L26 href="source/kernel/traps.c#L26">26</a> __res;}) <a name=L27 href="source/kernel/traps.c#L27">27</a> <a name=L28 href="source/kernel/traps.c#L28">28</a> #define <a href="ident?i=get_seg_long">get_seg_long</a>(seg,addr) ({ \ <a name=L29 href="source/kernel/traps.c#L29">29</a> register unsigned long __res; \ <a name=L30 href="source/kernel/traps.c#L30">30</a> __asm__(<i>"push %%fs;mov %%ax,%%fs;movl %%fs:%2,%%eax;pop %%fs"</i> \ <a name=L31 href="source/kernel/traps.c#L31">31</a> :<i>"=a"</i> (__res):<i>""</i> (seg),<i>"m"</i> (*(addr))); \ <a name=L32 href="source/kernel/traps.c#L32">32</a> __res;}) <a name=L33 href="source/kernel/traps.c#L33">33</a> <a name=L34 href="source/kernel/traps.c#L34">34</a> #define <a href="ident?i=_fs">_fs</a>() ({ \ <a name=L35 href="source/kernel/traps.c#L35">35</a> register unsigned short __res; \ <a name=L36 href="source/kernel/traps.c#L36">36</a> __asm__(<i>"mov %%fs,%%ax"</i>:<i>"=a"</i> (__res):); \ <a name=L37 href="source/kernel/traps.c#L37">37</a> __res;}) <a name=L38 href="source/kernel/traps.c#L38">38</a> <a name=L39 href="source/kernel/traps.c#L39">39</a> int <a href="ident?i=do_exit">do_exit</a>(long code); <a name=L40 href="source/kernel/traps.c#L40">40</a> <a name=L41 href="source/kernel/traps.c#L41">41</a> void <a href="ident?i=page_exception">page_exception</a>(void); <a name=L42 href="source/kernel/traps.c#L42">42</a> <a name=L43 href="source/kernel/traps.c#L43">43</a> void <a href="ident?i=divide_error">divide_error</a>(void); <a name=L44 href="source/kernel/traps.c#L44">44</a> void <a href="ident?i=debug">debug</a>(void); <a name=L45 href="source/kernel/traps.c#L45">45</a> void <a href="ident?i=nmi">nmi</a>(void); <a name=L46 href="source/kernel/traps.c#L46">46</a> void <a href="ident?i=int3">int3</a>(void); <a name=L47 href="source/kernel/traps.c#L47">47</a> void <a href="ident?i=overflow">overflow</a>(void); <a name=L48 href="source/kernel/traps.c#L48">48</a> void <a href="ident?i=bounds">bounds</a>(void); <a name=L49 href="source/kernel/traps.c#L49">49</a> void <a href="ident?i=invalid_op">invalid_op</a>(void); <a name=L50 href="source/kernel/traps.c#L50">50</a> void <a href="ident?i=device_not_available">device_not_available</a>(void); <a name=L51 href="source/kernel/traps.c#L51">51</a> void <a href="ident?i=double_fault">double_fault</a>(void); <a name=L52 href="source/kernel/traps.c#L52">52</a> void <a href="ident?i=coprocessor_segment_overrun">coprocessor_segment_overrun</a>(void); <a name=L53 href="source/kernel/traps.c#L53">53</a> void <a href="ident?i=invalid_TSS">invalid_TSS</a>(void); <a name=L54 href="source/kernel/traps.c#L54">54</a> void <a href="ident?i=segment_not_present">segment_not_present</a>(void); <a name=L55 href="source/kernel/traps.c#L55">55</a> void <a href="ident?i=stack_segment">stack_segment</a>(void); <a name=L56 href="source/kernel/traps.c#L56">56</a> void <a href="ident?i=general_protection">general_protection</a>(void); <a name=L57 href="source/kernel/traps.c#L57">57</a> void <a href="ident?i=page_fault">page_fault</a>(void); <a name=L58 href="source/kernel/traps.c#L58">58</a> void <a href="ident?i=coprocessor_error">coprocessor_error</a>(void); <a name=L59 href="source/kernel/traps.c#L59">59</a> void <a href="ident?i=reserved">reserved</a>(void); <a name=L60 href="source/kernel/traps.c#L60">60</a> void <a href="ident?i=parallel_interrupt">parallel_interrupt</a>(void); <a name=L61 href="source/kernel/traps.c#L61">61</a> void <a href="ident?i=irq13">irq13</a>(void); <a name=L62 href="source/kernel/traps.c#L62">62</a> <a name=L63 href="source/kernel/traps.c#L63">63</a> static void <a href="ident?i=die">die</a>(char * <a href="ident?i=str">str</a>,long esp_ptr,long nr) <a name=L64 href="source/kernel/traps.c#L64">64</a> { <a name=L65 href="source/kernel/traps.c#L65">65</a> long * esp = (long *) esp_ptr; <a name=L66 href="source/kernel/traps.c#L66">66</a> int i; <a name=L67 href="source/kernel/traps.c#L67">67</a> <a name=L68 href="source/kernel/traps.c#L68">68</a> <a href="ident?i=printk">printk</a>(<i>"%s: %04x\n\r"</i>,<a href="ident?i=str">str</a>,nr&0xffff); <a name=L69 href="source/kernel/traps.c#L69">69</a> <a href="ident?i=printk">printk</a>(<i>"EIP:\t%04x:%p\nEFLAGS:\t%p\nESP:\t%04x:%p\n"</i>, <a name=L70 href="source/kernel/traps.c#L70">70</a> esp[1],esp[0],esp[2],esp[4],esp[3]); <a name=L71 href="source/kernel/traps.c#L71">71</a> <a href="ident?i=printk">printk</a>(<i>"fs: %04x\n"</i>,<a href="ident?i=_fs">_fs</a>()); <a name=L72 href="source/kernel/traps.c#L72">72</a> <a href="ident?i=printk">printk</a>(<i>"base: %p, limit: %p\n"</i>,<a href="ident?i=get_base">get_base</a>(<a href="ident?i=current">current</a>->ldt[1]),<a href="ident?i=get_limit">get_limit</a>(0x17)); <a name=L73 href="source/kernel/traps.c#L73">73</a> if (esp[4] == 0x17) { <a name=L74 href="source/kernel/traps.c#L74">74</a> <a href="ident?i=printk">printk</a>(<i>"Stack: "</i>); <a name=L75 href="source/kernel/traps.c#L75">75</a> for (i=0;i<4;i++) <a name=L76 href="source/kernel/traps.c#L76">76</a> <a href="ident?i=printk">printk</a>(<i>"%p "</i>,<a href="ident?i=get_seg_long">get_seg_long</a>(0x17,i+(long *)esp[3])); <a name=L77 href="source/kernel/traps.c#L77">77</a> <a href="ident?i=printk">printk</a>(<i>"\n"</i>); <a name=L78 href="source/kernel/traps.c#L78">78</a> } <a name=L79 href="source/kernel/traps.c#L79">79</a> <a href="ident?i=str">str</a>(i); <a name=L80 href="source/kernel/traps.c#L80">80</a> <a href="ident?i=printk">printk</a>(<i>"Pid: %d, process nr: %d\n\r"</i>,<a href="ident?i=current">current</a>->pid,0xffff & i); <a name=L81 href="source/kernel/traps.c#L81">81</a> for(i=0;i<10;i++) <a name=L82 href="source/kernel/traps.c#L82">82</a> <a href="ident?i=printk">printk</a>(<i>"%02x "</i>,0xff & <a href="ident?i=get_seg_byte">get_seg_byte</a>(esp[1],(i+(char *)esp[0]))); <a name=L83 href="source/kernel/traps.c#L83">83</a> <a href="ident?i=printk">printk</a>(<i>"\n\r"</i>); <a name=L84 href="source/kernel/traps.c#L84">84</a> <a href="ident?i=do_exit">do_exit</a>(11); <b><i>/* play segment exception */</i></b> <a name=L85 href="source/kernel/traps.c#L85">85</a> } <a name=L86 href="source/kernel/traps.c#L86">86</a> <a name=L87 href="source/kernel/traps.c#L87">87</a> void <a href="ident?i=do_double_fault">do_double_fault</a>(long esp, long error_code) <a name=L88 href="source/kernel/traps.c#L88">88</a> { <a name=L89 href="source/kernel/traps.c#L89">89</a> <a href="ident?i=die">die</a>(<i>"double fault"</i>,esp,error_code); <a name=L90 href="source/kernel/traps.c#L90">90</a> } <a name=L91 href="source/kernel/traps.c#L91">91</a> <a name=L92 href="source/kernel/traps.c#L92">92</a> void <a href="ident?i=do_general_protection">do_general_protection</a>(long esp, long error_code) <a name=L93 href="source/kernel/traps.c#L93">93</a> { <a name=L94 href="source/kernel/traps.c#L94">94</a> <a href="ident?i=die">die</a>(<i>"general protection"</i>,esp,error_code);⌨️ 快捷键说明
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