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38 | pj | 1 | /* |
2 | * Project: S.Ha.R.K. |
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3 | * |
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4 | * Coordinators: |
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5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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6 | * Paolo Gai <pj@gandalf.sssup.it> |
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7 | * |
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8 | * Authors : |
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9 | * Paolo Gai <pj@gandalf.sssup.it> |
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10 | * (see the web pages for full authors list) |
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11 | * |
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12 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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13 | * |
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14 | * http://www.sssup.it |
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15 | * http://retis.sssup.it |
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16 | * http://shark.sssup.it |
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17 | */ |
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18 | |||
19 | /** |
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20 | ------------ |
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567 | giacomo | 21 | CVS : $Id: exchand.c,v 1.6 2004-04-18 20:18:21 giacomo Exp $ |
38 | pj | 22 | |
23 | File: $File$ |
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567 | giacomo | 24 | Revision: $Revision: 1.6 $ |
25 | Last update: $Date: 2004-04-18 20:18:21 $ |
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38 | pj | 26 | ------------ |
27 | **/ |
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28 | |||
29 | /* |
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157 | pj | 30 | * Copyright (C) 2000-2003 Paolo Gai |
38 | pj | 31 | * |
32 | * This program is free software; you can redistribute it and/or modify |
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33 | * it under the terms of the GNU General Public License as published by |
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34 | * the Free Software Foundation; either version 2 of the License, or |
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35 | * (at your option) any later version. |
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36 | * |
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37 | * This program is distributed in the hope that it will be useful, |
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38 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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39 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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40 | * GNU General Public License for more details. |
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41 | * |
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42 | * You should have received a copy of the GNU General Public License |
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43 | * along with this program; if not, write to the Free Software |
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44 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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45 | * |
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46 | */ |
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47 | |||
48 | #include <kernel/kern.h> |
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445 | giacomo | 49 | #include <stdlib.h> |
564 | giacomo | 50 | #include <string.h> |
445 | giacomo | 51 | #include <tracer.h> |
38 | pj | 52 | |
53 | static int myflag; |
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54 | static siginfo_t myinfo; |
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55 | static struct timespec mytime; |
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56 | |||
57 | static void thehandler(int signo, siginfo_t *info, void *extra); |
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58 | static void theend(void *arg); |
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59 | |||
157 | pj | 60 | const char *const _sys_exclist[] = { |
61 | "not used", |
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62 | "not used", |
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63 | "invalid kill of a task with a shadow pointer set", /* 2 */ |
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64 | "cleanup push: no more cleanups handlers", |
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65 | "invalid operation for a task", |
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66 | "not used", |
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67 | "no more OSLib events posted (see oslib/kl/event.c)", |
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68 | "deadline miss", |
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69 | "wcet violation", |
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70 | "task activated at a wrong time (too early?)", |
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71 | "mutex owner killed", /* 10 */ |
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72 | "SRP: invalid lock", |
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73 | "Dummy task: invalid operation", |
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74 | "Sporadic Server: invalid replenishment", |
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75 | "ARP: table full", |
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76 | "Netbuff: init", |
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77 | "Netbuff: get", |
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78 | "Netbuff: already free", |
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79 | "Netbuff: release", |
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80 | "UDP: Bad checksum" |
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81 | }; |
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82 | |||
83 | static char shutdown_message_buffer[500]; |
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84 | static int myflag_shutdown = 0; |
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85 | |||
38 | pj | 86 | /* |
87 | This exception handler should be good for text applications that do NOT |
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88 | use graphics |
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89 | */ |
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90 | int set_default_exception_handler(void) |
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91 | { |
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92 | struct sigaction action; |
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564 | giacomo | 93 | int i; |
38 | pj | 94 | |
95 | myflag = 0; |
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96 | |||
564 | giacomo | 97 | for(i=0;i<500;i++) shutdown_message_buffer[i] = 0; |
98 | |||
38 | pj | 99 | sys_atrunlevel(theend, NULL, RUNLEVEL_AFTER_EXIT); |
100 | |||
101 | /* Init the standard S.Ha.R.K. exception handler */ |
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102 | action.sa_flags = SA_SIGINFO; /* Set the signal action */ |
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103 | action.sa_sigaction = thehandler; |
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104 | action.sa_handler = 0; |
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105 | sigfillset(&action.sa_mask); /* we block all the other signals... */ |
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106 | |||
107 | return sigaction(SIGHEXC, &action, NULL); /* set the signal */ |
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108 | } |
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109 | |||
567 | giacomo | 110 | int remove_default_exception_handler(void) |
111 | { |
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112 | struct sigaction action; |
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113 | |||
114 | action.sa_flags = SA_SIGINFO; |
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115 | action.sa_sigaction = NULL; |
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116 | action.sa_handler = SIG_IGN; |
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117 | sigfillset(&action.sa_mask); |
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118 | |||
119 | return sigaction(SIGHEXC, &action, NULL); /* set the signal */ |
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120 | } |
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121 | |||
157 | pj | 122 | int sys_shutdown_message(char *fmt,...) |
123 | { |
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124 | va_list parms; |
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125 | int result = -1; |
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126 | |||
564 | giacomo | 127 | myflag_shutdown = 1; |
128 | va_start(parms,fmt); |
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129 | result = vsprintf(shutdown_message_buffer+strlen(shutdown_message_buffer),fmt,parms); |
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130 | va_end(parms); |
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131 | |||
157 | pj | 132 | return(result); |
564 | giacomo | 133 | |
157 | pj | 134 | } |
135 | |||
38 | pj | 136 | static void thehandler(int signo, siginfo_t *info, void *extra) |
137 | { |
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138 | if (!myflag) { |
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139 | myflag = 1; |
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140 | myinfo = *info; |
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141 | sys_gettime(&mytime), |
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142 | sys_abort(AHEXC); |
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143 | } |
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144 | } |
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145 | |||
146 | static void theend(void *arg) |
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147 | { |
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445 | giacomo | 148 | |
38 | pj | 149 | if (myflag) { |
157 | pj | 150 | cprintf("S.Ha.R.K. Exception raised!!!\n"); |
151 | cprintf("Time (s:ns) :%ld:%ld\n", mytime.tv_sec, mytime.tv_nsec); |
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152 | cprintf("Exception number:%d (%s)\n", myinfo.si_value.sival_int, |
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153 | _sys_exclist[myinfo.si_value.sival_int]); |
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154 | cprintf("PID :%d (%s)\n", myinfo.si_task, |
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155 | proc_table[myinfo.si_task].name); |
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156 | cprintf("Avail time : %d\n", proc_table[myinfo.si_task].avail_time); |
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445 | giacomo | 157 | |
38 | pj | 158 | } |
157 | pj | 159 | if (myflag_shutdown) { |
160 | cprintf("\nShutdown message:\n%s\n", shutdown_message_buffer); |
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161 | } |
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162 | |||
38 | pj | 163 | } |
164 | |||
165 | |||
166 |