[ac7d5ef0] | 1 | /* |
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[b06e68ef] | 2 | * @(#)monitor.c 1.18 - 95/08/02 |
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[ac7d5ef0] | 3 | * |
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| 4 | * |
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[b06e68ef] | 5 | * RTEMS monitor main body |
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[ac7d5ef0] | 6 | * |
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| 7 | * TODO: |
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[b06e68ef] | 8 | * add stuff to RTEMS api |
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| 9 | * rtems_get_name(id) |
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| 10 | * rtems_get_type(id) |
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| 11 | * rtems_build_id(node, type, num) |
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| 12 | * Add a command to dump out info about an arbitrary id when |
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| 13 | * types are added to id's |
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| 14 | * rtems> id idnum |
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| 15 | * idnum: node n, object: whatever, id: whatever |
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| 16 | * allow id's to be specified as n:t:id, where 'n:t' is optional |
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| 17 | * should have a separate monitor FILE stream (ala the debugger) |
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| 18 | * remote request/response stuff should be cleaned up |
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| 19 | * maybe we can use real rpc?? |
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| 20 | * |
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| 21 | * $Id$ |
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[ac7d5ef0] | 22 | */ |
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| 23 | |
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| 24 | #include <rtems.h> |
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| 25 | |
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| 26 | #include <stdio.h> |
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| 27 | #include <string.h> |
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| 28 | #include <stdlib.h> |
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| 29 | #include <unistd.h> |
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| 30 | |
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[b06e68ef] | 31 | #include "monitor.h" |
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[ac7d5ef0] | 32 | |
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| 33 | /* set by trap handler */ |
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| 34 | extern rtems_tcb *debugger_interrupted_task; |
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| 35 | extern rtems_context *debugger_interrupted_task_context; |
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| 36 | extern rtems_unsigned32 debugger_trap; |
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| 37 | |
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[b06e68ef] | 38 | /* |
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| 39 | * Various id's for the monitor |
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| 40 | * They need to be public variables for access by other agencies |
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| 41 | * such as debugger and remote servers' |
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| 42 | */ |
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[ac7d5ef0] | 43 | |
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[b06e68ef] | 44 | rtems_id rtems_monitor_task_id; |
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[ac7d5ef0] | 45 | |
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[b06e68ef] | 46 | unsigned32 rtems_monitor_node; /* our node number */ |
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| 47 | unsigned32 rtems_monitor_default_node; /* current default for commands */ |
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[ac7d5ef0] | 48 | |
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| 49 | /* |
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[b06e68ef] | 50 | * The rtems symbol table |
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[ac7d5ef0] | 51 | */ |
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| 52 | |
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[b06e68ef] | 53 | rtems_symbol_table_t *rtems_monitor_symbols; |
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| 54 | |
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[ac7d5ef0] | 55 | /* |
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[b06e68ef] | 56 | * The top-level commands |
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[ac7d5ef0] | 57 | */ |
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| 58 | |
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[b06e68ef] | 59 | rtems_monitor_command_entry_t rtems_monitor_commands[] = { |
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| 60 | { "--usage--", |
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| 61 | "\n" |
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| 62 | "RTEMS monitor\n" |
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| 63 | "\n" |
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| 64 | "Commands (may be abbreviated)\n" |
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| 65 | "\n" |
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| 66 | " help -- get this message or command specific help\n" |
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| 67 | " pause -- pause monitor for a specified number of ticks\n" |
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| 68 | " exit -- invoke a fatal RTEMS error\n" |
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| 69 | " symbol -- show entries from symbol table\n" |
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| 70 | " continue -- put monitor to sleep waiting for explicit wakeup\n" |
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| 71 | " config -- show system configuration\n" |
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| 72 | " itask -- list init tasks\n" |
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| 73 | " mpci -- list mpci config\n" |
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| 74 | " task -- show task information\n" |
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| 75 | " queue -- show message queue information\n" |
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| 76 | " extension -- user extensions\n" |
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| 77 | " driver -- show information about named drivers\n" |
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| 78 | " object -- generic object information\n" |
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| 79 | " node -- specify default node for commands that take id's\n" |
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| 80 | #ifdef CPU_INVOKE_DEBUGGER |
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| 81 | " debugger -- invoke system debugger\n" |
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| 82 | #endif |
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| 83 | , |
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| 84 | 0, |
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| 85 | 0, |
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| 86 | (unsigned32) rtems_monitor_commands, |
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| 87 | }, |
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| 88 | { "config", |
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| 89 | "config\n" |
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| 90 | " Show the system configuration.\n", |
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| 91 | 0, |
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| 92 | rtems_monitor_object_cmd, |
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| 93 | RTEMS_OBJECT_CONFIG, |
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| 94 | }, |
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| 95 | { "itask", |
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| 96 | "itask\n" |
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| 97 | " List init tasks for the system\n", |
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| 98 | 0, |
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| 99 | rtems_monitor_object_cmd, |
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| 100 | RTEMS_OBJECT_INIT_TASK, |
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| 101 | }, |
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| 102 | { "mpci", |
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| 103 | "mpci\n" |
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| 104 | " Show the MPCI system configuration, if configured.\n", |
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| 105 | 0, |
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| 106 | rtems_monitor_object_cmd, |
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| 107 | RTEMS_OBJECT_MPCI, |
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| 108 | }, |
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| 109 | { "pause", |
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| 110 | "pause [ticks]\n" |
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| 111 | " monitor goes to \"sleep\" for specified ticks (default is 1)\n" |
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| 112 | " monitor will resume at end of period or if explicitly awakened\n", |
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| 113 | 0, |
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| 114 | rtems_monitor_pause_cmd, |
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| 115 | 0, |
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| 116 | }, |
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| 117 | { "continue", |
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| 118 | "continue\n" |
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| 119 | " put the monitor to sleep waiting for an explicit wakeup from the\n" |
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| 120 | " program running.\n", |
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| 121 | 0, |
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| 122 | rtems_monitor_continue_cmd, |
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| 123 | 0, |
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| 124 | }, |
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| 125 | { "go", |
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| 126 | "go\n" |
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| 127 | " Alias for 'continue'\n", |
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| 128 | 0, |
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| 129 | rtems_monitor_continue_cmd, |
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| 130 | 0, |
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| 131 | }, |
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| 132 | { "node", |
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| 133 | "node [ node number ]\n" |
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| 134 | " Specify default node number for commands that take id's\n", |
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| 135 | 0, |
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| 136 | rtems_monitor_node_cmd, |
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| 137 | 0, |
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| 138 | }, |
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| 139 | { "symbol", |
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| 140 | "symbol [ symbolname [symbolname ... ] ]\n" |
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| 141 | " display value associated with specified symbol.\n" |
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| 142 | " Defaults to displaying all known symbols.\n", |
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| 143 | 0, |
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| 144 | rtems_monitor_symbol_cmd, |
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| 145 | (unsigned32) &rtems_monitor_symbols, |
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| 146 | }, |
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| 147 | { "extension", |
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| 148 | "extension [id [id ...] ]\n" |
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| 149 | " display information about specified extensions.\n" |
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| 150 | " Default is to display information about all extensions on this node\n", |
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| 151 | 0, |
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| 152 | rtems_monitor_object_cmd, |
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| 153 | RTEMS_OBJECT_EXTENSION, |
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| 154 | }, |
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| 155 | { "task", |
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| 156 | "task [id [id ...] ]\n" |
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| 157 | " display information about the specified tasks.\n" |
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| 158 | " Default is to display information about all tasks on this node\n", |
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| 159 | 0, |
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| 160 | rtems_monitor_object_cmd, |
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| 161 | RTEMS_OBJECT_TASK, |
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| 162 | }, |
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| 163 | { "queue", |
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| 164 | "queue [id [id ... ] ]\n" |
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| 165 | " display information about the specified message queues\n" |
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| 166 | " Default is to display information about all queues on this node\n", |
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| 167 | 0, |
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| 168 | rtems_monitor_object_cmd, |
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| 169 | RTEMS_OBJECT_QUEUE, |
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| 170 | }, |
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| 171 | { "object", |
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| 172 | "object [id [id ...] ]\n" |
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| 173 | " display information about specified RTEMS objects.\n" |
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| 174 | " Object id's must include 'type' information.\n" |
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| 175 | " (which may normally be defaulted)\n", |
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| 176 | 0, |
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| 177 | rtems_monitor_object_cmd, |
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| 178 | RTEMS_OBJECT_INVALID, |
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| 179 | }, |
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| 180 | { "driver", |
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| 181 | "driver [ major [ major ... ] ]\n" |
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| 182 | " Display the RTEMS device driver table.\n", |
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| 183 | 0, |
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| 184 | rtems_monitor_object_cmd, |
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| 185 | RTEMS_OBJECT_DRIVER, |
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| 186 | }, |
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| 187 | { "dname", |
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| 188 | "dname\n" |
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| 189 | " Displays information about named drivers.\n", |
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| 190 | 0, |
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| 191 | rtems_monitor_object_cmd, |
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| 192 | RTEMS_OBJECT_DNAME, |
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| 193 | }, |
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| 194 | { "exit", |
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| 195 | "exit [status]\n" |
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| 196 | " Invoke 'rtems_fatal_error_occurred' with 'status'\n" |
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| 197 | " (default is RTEMS_SUCCESSFUL)\n", |
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| 198 | 0, |
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| 199 | rtems_monitor_fatal_cmd, |
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| 200 | RTEMS_SUCCESSFUL, |
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| 201 | }, |
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| 202 | { "fatal", |
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| 203 | "fatal [status]\n" |
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| 204 | " 'exit' with fatal error; default error is RTEMS_TASK_EXITTED\n", |
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| 205 | 0, |
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| 206 | rtems_monitor_fatal_cmd, |
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| 207 | RTEMS_TASK_EXITTED, /* exit value */ |
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| 208 | }, |
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| 209 | { "quit", |
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| 210 | "quit [status]\n" |
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| 211 | " Alias for 'exit'\n", |
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| 212 | 0, |
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| 213 | rtems_monitor_fatal_cmd, |
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| 214 | RTEMS_SUCCESSFUL, /* exit value */ |
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| 215 | }, |
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| 216 | { "help", |
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| 217 | "help [ command [ command ] ]\n" |
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| 218 | " provide information about commands\n" |
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| 219 | " Default is show basic command summary.\n", |
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| 220 | 0, |
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| 221 | rtems_monitor_help_cmd, |
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| 222 | (unsigned32) rtems_monitor_commands, |
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| 223 | }, |
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| 224 | #ifdef CPU_INVOKE_DEBUGGER |
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| 225 | { "debugger", |
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| 226 | "debugger\n" |
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| 227 | " Enter the debugger, if possible.\n" |
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| 228 | " A continue from the debugger will return to the monitor.\n", |
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| 229 | 0, |
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| 230 | CPU_INVOKE_DEBUGGER, |
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| 231 | 0, |
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| 232 | }, |
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| 233 | #endif |
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| 234 | { 0, 0, 0, 0, 0 }, |
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| 235 | }; |
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[ac7d5ef0] | 236 | |
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| 237 | |
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| 238 | rtems_status_code |
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| 239 | rtems_monitor_suspend(rtems_interval timeout) |
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| 240 | { |
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| 241 | rtems_event_set event_set; |
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| 242 | rtems_status_code status; |
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| 243 | |
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[b06e68ef] | 244 | status = rtems_event_receive(MONITOR_WAKEUP_EVENT, |
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| 245 | RTEMS_DEFAULT_OPTIONS, |
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| 246 | timeout, |
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| 247 | &event_set); |
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[ac7d5ef0] | 248 | return status; |
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| 249 | } |
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| 250 | |
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| 251 | void |
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| 252 | rtems_monitor_wakeup(void) |
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| 253 | { |
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| 254 | rtems_status_code status; |
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| 255 | |
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| 256 | status = rtems_event_send(rtems_monitor_task_id, MONITOR_WAKEUP_EVENT); |
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| 257 | } |
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| 258 | |
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| 259 | |
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[b06e68ef] | 260 | void |
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| 261 | rtems_monitor_pause_cmd( |
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| 262 | int argc, |
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| 263 | char **argv, |
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| 264 | unsigned32 command_arg, |
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| 265 | boolean verbose |
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| 266 | ) |
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| 267 | { |
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| 268 | if (argc == 1) |
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| 269 | rtems_monitor_suspend(1); |
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| 270 | else |
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| 271 | rtems_monitor_suspend(strtoul(argv[1], 0, 0)); |
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| 272 | } |
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[ac7d5ef0] | 273 | |
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[b06e68ef] | 274 | void |
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| 275 | rtems_monitor_fatal_cmd( |
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| 276 | int argc, |
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| 277 | char **argv, |
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| 278 | unsigned32 command_arg, |
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| 279 | boolean verbose |
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| 280 | ) |
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[ac7d5ef0] | 281 | { |
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[b06e68ef] | 282 | if (argc == 1) |
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| 283 | rtems_fatal_error_occurred(command_arg); |
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| 284 | else |
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| 285 | rtems_fatal_error_occurred(strtoul(argv[1], 0, 0)); |
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[ac7d5ef0] | 286 | } |
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| 287 | |
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| 288 | void |
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[b06e68ef] | 289 | rtems_monitor_continue_cmd( |
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| 290 | int argc, |
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| 291 | char **argv, |
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| 292 | unsigned32 command_arg, |
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| 293 | boolean verbose |
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| 294 | ) |
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[ac7d5ef0] | 295 | { |
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[b06e68ef] | 296 | rtems_monitor_suspend(RTEMS_NO_TIMEOUT); |
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| 297 | } |
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[ac7d5ef0] | 298 | |
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| 299 | |
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[b06e68ef] | 300 | void |
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| 301 | rtems_monitor_node_cmd( |
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| 302 | int argc, |
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| 303 | char **argv, |
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| 304 | unsigned32 command_arg, |
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| 305 | boolean verbose |
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| 306 | ) |
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| 307 | { |
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| 308 | unsigned32 new_node = rtems_monitor_default_node; |
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| 309 | |
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| 310 | switch (argc) |
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[ac7d5ef0] | 311 | { |
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[b06e68ef] | 312 | case 1: /* no node, just set back to ours */ |
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| 313 | new_node = rtems_monitor_node; |
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| 314 | break; |
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[ac7d5ef0] | 315 | |
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[b06e68ef] | 316 | case 2: |
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| 317 | new_node = strtoul(argv[1], 0, 0); |
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| 318 | break; |
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[ac7d5ef0] | 319 | |
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[b06e68ef] | 320 | default: |
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| 321 | printf("invalid syntax, try 'help node'\n"); |
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| 322 | break; |
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[ac7d5ef0] | 323 | } |
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[b06e68ef] | 324 | |
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| 325 | if ((new_node >= 1) && (new_node <= _Configuration_MP_table->maximum_nodes)) |
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| 326 | rtems_monitor_default_node = new_node; |
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[ac7d5ef0] | 327 | } |
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| 328 | |
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[b06e68ef] | 329 | |
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[ac7d5ef0] | 330 | /* |
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| 331 | * Function: rtems_monitor_symbols_loadup |
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| 332 | * |
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| 333 | * Description: |
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| 334 | * Create and load the monitor's symbol table. |
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| 335 | * We are reading the output format of 'gnm' which looks like this: |
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| 336 | * |
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| 337 | * 400a7068 ? _Rate_monotonic_Information |
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| 338 | * 400a708c ? _Thread_Dispatch_disable_level |
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| 339 | * 400a7090 ? _Configuration_Table |
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| 340 | * |
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| 341 | * |
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| 342 | * We ignore the type field. |
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| 343 | * |
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| 344 | * Parameters: |
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| 345 | * |
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| 346 | * |
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| 347 | * Returns: |
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| 348 | * |
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| 349 | * |
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| 350 | * Side Effects: |
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| 351 | * Creates and fills in 'rtems_monitor_symbols' table |
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| 352 | * |
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| 353 | * Notes: |
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| 354 | * |
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| 355 | * |
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| 356 | * Deficiencies/ToDo: |
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| 357 | * Someday this should know BFD |
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| 358 | * Maybe we could get objcopy to just copy the symbol areas |
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| 359 | * and copy that down. |
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| 360 | * |
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| 361 | */ |
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| 362 | |
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| 363 | void |
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| 364 | rtems_monitor_symbols_loadup(void) |
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| 365 | { |
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| 366 | FILE *fp; |
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| 367 | char buffer[128]; |
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| 368 | |
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[b06e68ef] | 369 | if (rtems_monitor_symbols) |
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| 370 | rtems_symbol_table_destroy(rtems_monitor_symbols); |
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| 371 | |
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[ac7d5ef0] | 372 | rtems_monitor_symbols = rtems_symbol_table_create(10); |
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| 373 | if (rtems_monitor_symbols == 0) |
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| 374 | return; |
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| 375 | |
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[b06e68ef] | 376 | #ifdef simhppa |
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| 377 | fp = fdopen(8, "r"); /* don't ask; don't tell */ |
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| 378 | #else |
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| 379 | fp = fopen("symbols", "r"); |
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| 380 | #endif |
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| 381 | |
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[ac7d5ef0] | 382 | if (fp == 0) |
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| 383 | return; |
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| 384 | |
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| 385 | while (fgets(buffer, sizeof(buffer) - 1, fp)) |
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| 386 | { |
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| 387 | char *symbol; |
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| 388 | char *value; |
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| 389 | char *ignored_type; |
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| 390 | |
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| 391 | value = strtok(buffer, " \t\n"); |
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| 392 | ignored_type = strtok(0, " \t\n"); |
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| 393 | symbol = strtok(0, " \t\n"); |
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| 394 | |
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| 395 | if (symbol && ignored_type && value) |
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| 396 | { |
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| 397 | rtems_symbol_t *sp; |
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| 398 | sp = rtems_symbol_create(rtems_monitor_symbols, |
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| 399 | symbol, |
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| 400 | (rtems_unsigned32) strtoul(value, 0, 16)); |
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| 401 | if (sp == 0) |
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| 402 | { |
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[b06e68ef] | 403 | printf("could not define symbol '%s'\n", symbol); |
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[ac7d5ef0] | 404 | goto done; |
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| 405 | } |
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| 406 | } |
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| 407 | else |
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| 408 | { |
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[b06e68ef] | 409 | printf("parsing error on '%s'\n", buffer); |
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[ac7d5ef0] | 410 | goto done; |
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| 411 | } |
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| 412 | } |
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| 413 | |
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| 414 | done: |
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| 415 | } |
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[b06e68ef] | 416 | |
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| 417 | |
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| 418 | /* |
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| 419 | * Main monitor command loop |
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| 420 | */ |
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| 421 | |
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| 422 | void |
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| 423 | rtems_monitor_task( |
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| 424 | rtems_task_argument monitor_flags |
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| 425 | ) |
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| 426 | { |
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| 427 | rtems_tcb *debugee = 0; |
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| 428 | rtems_context *rp; |
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| 429 | rtems_context_fp *fp; |
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| 430 | char command_buffer[513]; |
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| 431 | int argc; |
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| 432 | char *argv[64]; |
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| 433 | boolean verbose = FALSE; |
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| 434 | |
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| 435 | if (monitor_flags & RTEMS_MONITOR_SUSPEND) |
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| 436 | (void) rtems_monitor_suspend(RTEMS_NO_TIMEOUT); |
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| 437 | |
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| 438 | for (;;) |
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| 439 | { |
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| 440 | extern rtems_tcb * _Thread_Executing; |
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| 441 | rtems_monitor_command_entry_t *command; |
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| 442 | |
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| 443 | debugee = _Thread_Executing; |
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| 444 | rp = &debugee->Registers; |
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| 445 | fp = (rtems_context_fp *) debugee->fp_context; /* possibly 0 */ |
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| 446 | |
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| 447 | if (0 == rtems_monitor_command_read(command_buffer, &argc, argv)) |
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| 448 | continue; |
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| 449 | if ((command = rtems_monitor_command_lookup(rtems_monitor_commands, |
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| 450 | argc, |
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| 451 | argv)) == 0) |
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| 452 | continue; |
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| 453 | |
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| 454 | command->command_function(argc, argv, command->command_arg, verbose); |
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| 455 | |
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| 456 | fflush(stdout); |
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| 457 | } |
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| 458 | } |
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| 459 | |
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| 460 | |
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| 461 | void |
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| 462 | rtems_monitor_kill(void) |
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| 463 | { |
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| 464 | if (rtems_monitor_task_id) |
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| 465 | rtems_task_delete(rtems_monitor_task_id); |
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| 466 | rtems_monitor_task_id = 0; |
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| 467 | |
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| 468 | rtems_monitor_server_kill(); |
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| 469 | } |
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| 470 | |
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| 471 | void |
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| 472 | rtems_monitor_init( |
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| 473 | unsigned32 monitor_flags |
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| 474 | ) |
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| 475 | { |
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| 476 | rtems_status_code status; |
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| 477 | |
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| 478 | rtems_monitor_kill(); |
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| 479 | |
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| 480 | status = rtems_task_create(RTEMS_MONITOR_NAME, |
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| 481 | 1, |
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| 482 | 0 /* default stack */, |
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| 483 | RTEMS_INTERRUPT_LEVEL(0), |
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| 484 | RTEMS_DEFAULT_ATTRIBUTES, |
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| 485 | &rtems_monitor_task_id); |
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| 486 | if (status != RTEMS_SUCCESSFUL) |
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| 487 | { |
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| 488 | rtems_error(status, "could not create monitor task"); |
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| 489 | goto done; |
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| 490 | } |
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| 491 | |
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| 492 | rtems_monitor_node = rtems_get_node(rtems_monitor_task_id); |
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| 493 | rtems_monitor_default_node = rtems_monitor_node; |
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| 494 | |
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| 495 | rtems_monitor_symbols_loadup(); |
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| 496 | |
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| 497 | if (monitor_flags & RTEMS_MONITOR_GLOBAL) |
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| 498 | rtems_monitor_server_init(monitor_flags); |
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| 499 | |
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| 500 | /* |
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| 501 | * Start the monitor task itself |
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| 502 | */ |
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| 503 | |
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| 504 | status = rtems_task_start(rtems_monitor_task_id, |
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| 505 | rtems_monitor_task, |
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| 506 | monitor_flags); |
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| 507 | if (status != RTEMS_SUCCESSFUL) |
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| 508 | { |
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| 509 | rtems_error(status, "could not start monitor"); |
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| 510 | goto done; |
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| 511 | } |
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| 512 | |
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| 513 | done: |
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| 514 | } |
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