1 | /* |
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2 | * RTEMS monitor main body |
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3 | * |
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4 | * TODO: |
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5 | * add stuff to RTEMS api |
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6 | * rtems_get_name(id) |
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7 | * rtems_get_type(id) |
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8 | * rtems_build_id(node, type, num) |
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9 | * Add a command to dump out info about an arbitrary id when |
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10 | * types are added to id's |
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11 | * rtems> id idnum |
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12 | * idnum: node n, object: whatever, id: whatever |
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13 | * allow id's to be specified as n:t:id, where 'n:t' is optional |
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14 | * should have a separate monitor FILE stream (ala the debugger) |
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15 | * remote request/response stuff should be cleaned up |
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16 | * maybe we can use real rpc?? |
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17 | * 'info' command to print out: |
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18 | * interrupt stack location, direction and size |
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19 | * floating point config stuff |
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20 | * interrupt config stuff |
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21 | * |
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22 | * $Id$ |
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23 | */ |
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24 | |
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25 | #ifdef HAVE_CONFIG_H |
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26 | #include "config.h" |
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27 | #endif |
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28 | |
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29 | #include <rtems.h> |
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30 | |
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31 | #include <stdio.h> |
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32 | #include <string.h> |
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33 | #include <stdlib.h> |
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34 | #include <termios.h> |
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35 | #include <unistd.h> |
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36 | |
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37 | #include <rtems/monitor.h> |
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38 | |
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39 | #define STREQ(a,b) (strcmp(a,b) == 0) |
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40 | |
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41 | /* set by trap handler */ |
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42 | extern rtems_tcb *debugger_interrupted_task; |
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43 | extern rtems_context *debugger_interrupted_task_context; |
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44 | extern uint32_t debugger_trap; |
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45 | |
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46 | /* |
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47 | * Various id's for the monitor |
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48 | * They need to be public variables for access by other agencies |
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49 | * such as debugger and remote servers' |
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50 | */ |
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51 | |
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52 | rtems_id rtems_monitor_task_id; |
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53 | |
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54 | uint32_t rtems_monitor_node; /* our node number */ |
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55 | uint32_t rtems_monitor_default_node; /* current default for commands */ |
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56 | |
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57 | /* |
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58 | * The rtems symbol table |
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59 | */ |
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60 | |
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61 | rtems_symbol_table_t *rtems_monitor_symbols; |
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62 | |
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63 | /* |
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64 | * User registered commands. |
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65 | */ |
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66 | |
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67 | rtems_monitor_command_entry_t rtems_registered_commands; |
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68 | |
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69 | /* |
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70 | * The top-level commands |
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71 | */ |
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72 | |
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73 | rtems_monitor_command_entry_t rtems_monitor_commands[] = { |
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74 | { "config", |
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75 | "Show the system configuration.", |
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76 | 0, |
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77 | rtems_monitor_object_cmd, |
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78 | { RTEMS_MONITOR_OBJECT_CONFIG }, |
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79 | &rtems_monitor_commands[1], |
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80 | }, |
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81 | { "itask", |
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82 | "List init tasks for the system", |
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83 | 0, |
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84 | rtems_monitor_object_cmd, |
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85 | { RTEMS_MONITOR_OBJECT_INIT_TASK }, |
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86 | &rtems_monitor_commands[2], |
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87 | }, |
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88 | { "mpci", |
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89 | "Show the MPCI system configuration, if configured.", |
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90 | 0, |
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91 | rtems_monitor_object_cmd, |
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92 | { RTEMS_MONITOR_OBJECT_MPCI }, |
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93 | &rtems_monitor_commands[3], |
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94 | }, |
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95 | { "pause", |
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96 | "Monitor goes to \"sleep\" for specified ticks (default is 1). " |
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97 | "Monitor will resume at end of period or if explicitly awakened\n" |
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98 | " pause [ticks]", |
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99 | 0, |
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100 | rtems_monitor_pause_cmd, |
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101 | { 0 }, |
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102 | &rtems_monitor_commands[4], |
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103 | }, |
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104 | { "continue", |
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105 | "Put the monitor to sleep waiting for an explicit wakeup from the " |
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106 | "program running.\n", |
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107 | 0, |
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108 | rtems_monitor_continue_cmd, |
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109 | { 0 }, |
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110 | &rtems_monitor_commands[5], |
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111 | }, |
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112 | { "go", |
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113 | "Alias for 'continue'", |
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114 | 0, |
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115 | rtems_monitor_continue_cmd, |
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116 | { 0 }, |
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117 | &rtems_monitor_commands[6], |
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118 | }, |
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119 | { "node", |
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120 | "Specify default node number for commands that take id's.\n" |
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121 | " node [ node number ]", |
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122 | 0, |
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123 | rtems_monitor_node_cmd, |
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124 | { 0 }, |
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125 | &rtems_monitor_commands[7], |
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126 | }, |
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127 | { "symbol", |
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128 | "Display value associated with specified symbol. " |
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129 | "Defaults to displaying all known symbols.\n" |
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130 | " symbol [ symbolname [symbolname ... ] ]", |
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131 | 0, |
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132 | rtems_monitor_symbol_cmd, |
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133 | { .symbol_table = &rtems_monitor_symbols }, |
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134 | &rtems_monitor_commands[8], |
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135 | }, |
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136 | { "extension", |
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137 | "Display information about specified extensions. " |
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138 | "Default is to display information about all extensions on this node.\n" |
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139 | " extension [id [id ...] ]", |
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140 | 0, |
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141 | rtems_monitor_object_cmd, |
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142 | { RTEMS_MONITOR_OBJECT_EXTENSION }, |
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143 | &rtems_monitor_commands[9], |
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144 | }, |
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145 | { "task", |
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146 | "Display information about the specified tasks. " |
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147 | "Default is to display information about all tasks on this node.\n" |
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148 | " task [id [id ...] ]", |
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149 | 0, |
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150 | rtems_monitor_object_cmd, |
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151 | { RTEMS_MONITOR_OBJECT_TASK }, |
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152 | &rtems_monitor_commands[10], |
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153 | }, |
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154 | { "queue", |
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155 | "Display information about the specified message queues. " |
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156 | "Default is to display information about all queues on this node.\n" |
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157 | " queue [id [id ... ] ]", |
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158 | 0, |
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159 | rtems_monitor_object_cmd, |
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160 | { RTEMS_MONITOR_OBJECT_QUEUE }, |
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161 | &rtems_monitor_commands[11], |
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162 | }, |
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163 | { "object", |
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164 | "Display information about specified RTEMS objects. " |
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165 | "Object id's must include 'type' information. " |
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166 | "(which may normally be defaulted)\n" |
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167 | " object [id [id ...] ]", |
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168 | 0, |
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169 | rtems_monitor_object_cmd, |
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170 | { RTEMS_MONITOR_OBJECT_INVALID }, |
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171 | &rtems_monitor_commands[12], |
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172 | }, |
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173 | { "driver", |
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174 | "Display the RTEMS device driver table.\n" |
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175 | " driver [ major [ major ... ] ]", |
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176 | 0, |
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177 | rtems_monitor_object_cmd, |
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178 | { RTEMS_MONITOR_OBJECT_DRIVER }, |
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179 | &rtems_monitor_commands[13], |
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180 | }, |
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181 | { "dname", |
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182 | "Displays information about named drivers.\n", |
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183 | 0, |
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184 | rtems_monitor_object_cmd, |
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185 | { RTEMS_MONITOR_OBJECT_DNAME }, |
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186 | &rtems_monitor_commands[14], |
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187 | }, |
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188 | { "exit", |
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189 | "Invoke 'rtems_fatal_error_occurred' with 'status' " |
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190 | "(default is RTEMS_SUCCESSFUL)\n" |
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191 | " exit [status]", |
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192 | 0, |
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193 | rtems_monitor_fatal_cmd, |
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194 | { .status_code = RTEMS_SUCCESSFUL }, |
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195 | &rtems_monitor_commands[15], |
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196 | }, |
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197 | { "fatal", |
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198 | "'exit' with fatal error; default error is RTEMS_TASK_EXITTED\n" |
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199 | " fatal [status]", |
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200 | 0, |
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201 | rtems_monitor_fatal_cmd, |
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202 | { .status_code = RTEMS_TASK_EXITTED }, /* exit value */ |
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203 | &rtems_monitor_commands[16], |
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204 | }, |
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205 | { "quit", |
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206 | "Alias for 'exit'\n", |
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207 | 0, |
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208 | rtems_monitor_fatal_cmd, |
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209 | { .status_code = RTEMS_SUCCESSFUL }, /* exit value */ |
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210 | &rtems_monitor_commands[17], |
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211 | }, |
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212 | { "help", |
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213 | "Provide information about commands. " |
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214 | "Default is show basic command summary.\n" |
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215 | "help [ command [ command ] ]", |
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216 | 0, |
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217 | rtems_monitor_help_cmd, |
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218 | { .monitor_command_entry = rtems_monitor_commands }, |
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219 | &rtems_monitor_commands[18], |
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220 | }, |
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221 | #ifdef CPU_INVOKE_DEBUGGER |
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222 | { "debugger", |
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223 | "Enter the debugger, if possible. " |
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224 | "A continue from the debugger will return to the monitor.\n", |
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225 | 0, |
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226 | rtems_monitor_debugger_cmd, |
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227 | { 0 }, |
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228 | &rtems_monitor_commands[19], |
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229 | }, |
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230 | #endif |
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231 | { 0, 0, 0, 0, { 0 }, &rtems_registered_commands }, |
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232 | }; |
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233 | |
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234 | |
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235 | rtems_status_code |
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236 | rtems_monitor_suspend(rtems_interval timeout) |
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237 | { |
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238 | rtems_event_set event_set; |
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239 | rtems_status_code status; |
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240 | |
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241 | status = rtems_event_receive(MONITOR_WAKEUP_EVENT, |
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242 | RTEMS_DEFAULT_OPTIONS, |
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243 | timeout, |
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244 | &event_set); |
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245 | return status; |
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246 | } |
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247 | |
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248 | void |
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249 | rtems_monitor_wakeup(void) |
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250 | { |
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251 | rtems_status_code status; |
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252 | |
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253 | status = rtems_event_send(rtems_monitor_task_id, MONITOR_WAKEUP_EVENT); |
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254 | } |
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255 | |
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256 | void |
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257 | rtems_monitor_debugger_cmd( |
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258 | int argc, |
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259 | char **argv, |
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260 | rtems_monitor_command_arg_t* command_arg, |
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261 | boolean verbose |
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262 | ) |
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263 | { |
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264 | #ifdef CPU_INVOKE_DEBUGGER |
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265 | CPU_INVOKE_DEBUGGER; |
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266 | #endif |
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267 | } |
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268 | |
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269 | void |
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270 | rtems_monitor_pause_cmd( |
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271 | int argc, |
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272 | char **argv, |
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273 | rtems_monitor_command_arg_t* command_arg, |
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274 | boolean verbose |
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275 | ) |
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276 | { |
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277 | if (argc == 1) |
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278 | rtems_monitor_suspend(1); |
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279 | else |
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280 | rtems_monitor_suspend(strtoul(argv[1], 0, 0)); |
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281 | } |
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282 | |
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283 | void |
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284 | rtems_monitor_fatal_cmd( |
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285 | int argc, |
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286 | char **argv, |
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287 | rtems_monitor_command_arg_t* command_arg, |
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288 | boolean verbose |
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289 | ) |
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290 | { |
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291 | if (argc == 1) |
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292 | rtems_fatal_error_occurred(command_arg->status_code); |
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293 | else |
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294 | rtems_fatal_error_occurred(strtoul(argv[1], 0, 0)); |
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295 | } |
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296 | |
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297 | void |
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298 | rtems_monitor_continue_cmd( |
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299 | int argc, |
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300 | char **argv, |
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301 | rtems_monitor_command_arg_t* command_arg, |
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302 | boolean verbose |
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303 | ) |
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304 | { |
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305 | rtems_monitor_suspend(RTEMS_NO_TIMEOUT); |
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306 | } |
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307 | |
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308 | void |
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309 | rtems_monitor_node_cmd( |
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310 | int argc, |
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311 | char **argv, |
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312 | rtems_monitor_command_arg_t* command_arg, |
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313 | boolean verbose |
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314 | ) |
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315 | { |
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316 | uint32_t new_node = rtems_monitor_default_node; |
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317 | |
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318 | switch (argc) |
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319 | { |
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320 | case 1: /* no node, just set back to ours */ |
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321 | new_node = rtems_monitor_node; |
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322 | break; |
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323 | |
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324 | case 2: |
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325 | new_node = strtoul(argv[1], 0, 0); |
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326 | break; |
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327 | |
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328 | default: |
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329 | fprintf(stdout,"invalid syntax, try 'help node'\n"); |
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330 | break; |
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331 | } |
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332 | |
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333 | if ((new_node >= 1) && |
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334 | _Configuration_MP_table && |
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335 | (new_node <= _Configuration_MP_table->maximum_nodes)) |
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336 | rtems_monitor_default_node = new_node; |
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337 | } |
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338 | |
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339 | |
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340 | /* |
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341 | * Function: rtems_monitor_symbols_loadup |
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342 | * |
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343 | * Description: |
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344 | * Create and load the monitor's symbol table. |
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345 | * We are reading the output format of 'gnm' which looks like this: |
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346 | * |
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347 | * 400a7068 ? _Rate_monotonic_Information |
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348 | * 400a708c ? _Thread_Dispatch_disable_level |
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349 | * 400a7090 ? _Configuration_Table |
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350 | * |
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351 | * We ignore the type field. |
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352 | * |
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353 | * Side Effects: |
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354 | * Creates and fills in 'rtems_monitor_symbols' table |
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355 | * |
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356 | * TODO |
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357 | * there should be a BSP #define or something like that |
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358 | * to do this; Assuming stdio is crazy. |
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359 | * Someday this should know BFD |
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360 | * Maybe we could get objcopy to just copy the symbol areas |
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361 | * and copy that down. |
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362 | * |
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363 | */ |
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364 | |
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365 | void |
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366 | rtems_monitor_symbols_loadup(void) |
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367 | { |
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368 | FILE *fp; |
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369 | char buffer[128]; |
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370 | |
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371 | if (rtems_monitor_symbols) |
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372 | rtems_symbol_table_destroy(rtems_monitor_symbols); |
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373 | |
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374 | rtems_monitor_symbols = rtems_symbol_table_create(10); |
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375 | if (rtems_monitor_symbols == 0) |
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376 | return; |
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377 | |
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378 | fp = fopen("symbols", "r"); |
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379 | |
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380 | if (fp == 0) |
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381 | return; |
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382 | |
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383 | while (fgets(buffer, sizeof(buffer) - 1, fp)) |
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384 | { |
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385 | char *symbol; |
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386 | char *value; |
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387 | char *ignored_type; |
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388 | |
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389 | value = strtok(buffer, " \t\n"); |
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390 | ignored_type = strtok(0, " \t\n"); |
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391 | symbol = strtok(0, " \t\n"); |
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392 | |
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393 | if (symbol && ignored_type && value) |
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394 | { |
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395 | rtems_symbol_t *sp; |
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396 | sp = rtems_symbol_create(rtems_monitor_symbols, |
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397 | symbol, |
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398 | (uint32_t ) strtoul(value, 0, 16)); |
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399 | if (sp == 0) |
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400 | { |
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401 | fprintf(stdout,"could not define symbol '%s'\n", symbol); |
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402 | goto done; |
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403 | } |
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404 | } |
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405 | else |
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406 | { |
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407 | fprintf(stdout,"parsing error on '%s'\n", buffer); |
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408 | goto done; |
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409 | } |
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410 | } |
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411 | |
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412 | done: |
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413 | return; |
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414 | } |
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415 | |
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416 | /* |
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417 | * User registered commands. |
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418 | */ |
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419 | |
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420 | int |
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421 | rtems_monitor_insert_cmd ( |
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422 | rtems_monitor_command_entry_t *command |
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423 | ) |
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424 | { |
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425 | rtems_monitor_command_entry_t **p = &rtems_registered_commands.next; |
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426 | |
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427 | command->next = 0; |
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428 | |
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429 | while (*p) { |
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430 | if ( STREQ(command->command, (*p)->command) ) |
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431 | return 0; |
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432 | p = & (*p)->next; |
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433 | } |
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434 | *p = command; |
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435 | return 1; |
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436 | } |
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437 | |
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438 | int |
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439 | rtems_monitor_erase_cmd ( |
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440 | rtems_monitor_command_entry_t *command |
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441 | ) |
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442 | { |
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443 | rtems_monitor_command_entry_t **p = & rtems_registered_commands.next; |
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444 | |
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445 | while (*p) { |
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446 | if ( STREQ(command->command, (*p)->command) ) { |
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447 | *p = (*p)->next; |
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448 | command->next = 0; |
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449 | return 1; |
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450 | } |
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451 | p = & (*p)->next; |
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452 | } |
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453 | return 0; |
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454 | |
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455 | } |
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456 | |
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457 | /* |
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458 | * Main monitor command loop |
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459 | */ |
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460 | |
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461 | void |
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462 | rtems_monitor_task( |
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463 | rtems_task_argument monitor_flags |
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464 | ) |
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465 | { |
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466 | rtems_tcb *debugee = 0; |
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467 | rtems_context *rp; |
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468 | rtems_context_fp *fp; |
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469 | char command_buffer[513]; |
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470 | int argc; |
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471 | char *argv[64]; |
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472 | boolean verbose = FALSE; |
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473 | struct termios term; |
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474 | |
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475 | /* |
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476 | * Make the stdin stream characte not line based. |
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477 | */ |
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478 | |
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479 | if (tcgetattr (STDIN_FILENO, &term) < 0) |
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480 | { |
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481 | fprintf(stdout,"rtems-monitor: cannot get terminal attributes.\n"); |
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482 | } |
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483 | else |
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484 | { |
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485 | /* |
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486 | * No echo, no canonical processing. |
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487 | */ |
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488 | |
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489 | term.c_lflag &= ~(ECHO | ICANON | IEXTEN); |
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490 | |
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491 | /* |
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492 | * No sigint on BREAK, CR-to-NL off, input parity off, |
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493 | * don't strip 8th bit on input, output flow control off |
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494 | */ |
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495 | |
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496 | term.c_lflag &= ~(INPCK | ISTRIP | IXON); |
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497 | term.c_cc[VMIN] = 1; |
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498 | term.c_cc[VTIME] = 0; |
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499 | |
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500 | if (tcsetattr (STDIN_FILENO, TCSANOW, &term) < 0) |
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501 | { |
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502 | fprintf(stdout,"cannot set terminal attributes\n"); |
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503 | } |
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504 | } |
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505 | |
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506 | if (monitor_flags & RTEMS_MONITOR_SUSPEND) |
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507 | (void) rtems_monitor_suspend(RTEMS_NO_TIMEOUT); |
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508 | |
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509 | for (;;) |
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510 | { |
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511 | extern rtems_tcb * _Thread_Executing; |
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512 | rtems_monitor_command_entry_t *command; |
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513 | |
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514 | debugee = _Thread_Executing; |
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515 | rp = &debugee->Registers; |
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516 | #if (CPU_HARDWARE_FP == TRUE) || (CPU_SOFTWARE_FP == TRUE) |
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517 | fp = debugee->fp_context; /* possibly 0 */ |
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518 | #else |
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519 | fp = 0; |
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520 | #endif |
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521 | |
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522 | if (0 == rtems_monitor_command_read(command_buffer, &argc, argv)) |
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523 | continue; |
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524 | if ((command = rtems_monitor_command_lookup(rtems_monitor_commands, |
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525 | argc, |
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526 | argv)) == 0) |
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527 | { |
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528 | /* no command */ |
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529 | fprintf(stdout,"Unrecognised command; try 'help'\n"); |
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530 | continue; |
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531 | } |
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532 | |
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533 | command->command_function(argc, argv, &command->command_arg, verbose); |
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534 | |
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535 | fflush(stdout); |
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536 | } |
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537 | } |
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538 | |
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539 | |
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540 | void |
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541 | rtems_monitor_kill(void) |
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542 | { |
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543 | if (rtems_monitor_task_id) |
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544 | rtems_task_delete(rtems_monitor_task_id); |
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545 | rtems_monitor_task_id = 0; |
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546 | |
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547 | rtems_monitor_server_kill(); |
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548 | } |
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549 | |
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550 | void |
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551 | rtems_monitor_init( |
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552 | uint32_t monitor_flags |
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553 | ) |
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554 | { |
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555 | rtems_status_code status; |
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556 | |
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557 | rtems_monitor_kill(); |
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558 | |
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559 | status = rtems_task_create(RTEMS_MONITOR_NAME, |
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560 | 1, |
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561 | RTEMS_MINIMUM_STACK_SIZE * 2, |
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562 | RTEMS_INTERRUPT_LEVEL(0), |
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563 | RTEMS_DEFAULT_ATTRIBUTES, |
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564 | &rtems_monitor_task_id); |
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565 | if (status != RTEMS_SUCCESSFUL) |
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566 | { |
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567 | rtems_error(status, "could not create monitor task"); |
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568 | return; |
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569 | } |
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570 | |
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571 | rtems_monitor_node = rtems_get_node(rtems_monitor_task_id); |
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572 | rtems_monitor_default_node = rtems_monitor_node; |
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573 | |
---|
574 | rtems_monitor_symbols_loadup(); |
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575 | |
---|
576 | if (monitor_flags & RTEMS_MONITOR_GLOBAL) |
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577 | rtems_monitor_server_init(monitor_flags); |
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578 | |
---|
579 | /* |
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580 | * Start the monitor task itself |
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581 | */ |
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582 | |
---|
583 | status = rtems_task_start(rtems_monitor_task_id, |
---|
584 | rtems_monitor_task, |
---|
585 | monitor_flags); |
---|
586 | if (status != RTEMS_SUCCESSFUL) |
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587 | { |
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588 | rtems_error(status, "could not start monitor"); |
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589 | return; |
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590 | } |
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591 | } |
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