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<strong>Tornado</strong> 2.0 User’s Guide -> taskIdCurrent _taskIdCurrent = 0x838d0: value = 3880092 = 0x3b349c -> i NAME ENTRY TID PRI STATUS PC SP ERRNO DELAY --------- ---------- -------- ----- ------- ------- ------- ----- ----- tExcTask _excTask 3e8a54 0 PEND 4eb8c 3e89b4 0 0 tLogTask _logTask 3e612c 0 PEND 4eb8c 3e6088 0 0 tWdbTask 0x44d54 389774 3 PEND 46cb6 3896c0 0 0 tNetTask _netTask 3b349c 50 READY 46cb6 3b3444 0 0 Agent mode : Extern System context : Suspended value = 0 = 0x0 You can trace all the tasks except the one that was running when you placed the system in system mode and you can step through the interrupt handler. -> tt tLogTask 4da78 _vxTaskEntry +10 : _logTask (0, 0, 0, 0, 0, 0, 0, 0, 0, 0) 3f2bc _logTask +18 : _msgQReceive (3e62e4, 3e60dc, 20, ffffffff) 27e64 _msgQReceive +1ba: _qJobGet ([3e62e8, ffffffff, 0, 0, 0, 0]) value = 0 = 0x0 -> l _usrClock 00022d9a 4856 PEA (A6) 00022d9c 2c4f MOVEA .L A7,A6 00022d9e 61ff 0002 3d8c BSR _tickAnnounce 00022da4 4e5e UNLK A6 00022da6 4e75 RTS 00022da8 352e 3400 MOVE .W (0x3400,A6),-(A2) 00022dac 4a75 6c20 TST .W (0x20,A5,D6.L*4) 00022db0 3234 2031 MOVE .W (0x31,A4,D2.W*1),D1 00022db4 3939 382c 2031 MOVE .W 0x382c2031,-(A4) 00022dba 343a 3337 MOVE .W (0x3337,PC),D2 value = 0 = 0x0 -> s d0 = 3e d1 = 3700 d2 = 3000 d3 = 3b09dc d4 = 0 d5 = 0 d6 = 0 d7 = 0 a0 = 230b8 a1 = 3b3318 a2 = 3b3324 a3 = 7e094 a4 = 38a7c0 a5 = 0 a6/fp = bcb90 a7/sp = bcb84 sr = 2604 pc = 230ba 000230ba 2c4f MOVEA .L A7,A6 value = 0 = 0x0 Return to task mode and confirm that return by calling i( ): -> sysResume value = 0 = 0x0 -> i NAME ENTRY TID PRI STATUS PC SP ERRNO DELAY --------- ---------- -------- ----- ------- ------- ------- ----- ----- tExcTask _excTask 3e8f98 0 PEND 47982 3e8ef4 0 0 tLogTask _logTask 3e6670 0 PEND 47982 3e65c8 0 0 172
5 Shell tWdbTask 0x3f024 398e04 3 READY 405ac 398d50 30067 0 tNetTask _netTask 3b39e0 50 PEND 405ac 3b3988 0 0 value = 0 = 0x0 If you want to debug an application you have loaded dynamically, set an appropriate breakpoint and spawn a task which runs when you continue the system: -> sysSuspend value = 0 = 0x0 -> ld < test.o Loading /view/didier.temp/vobs/wpwr/target/lib/objMC68040gnutest//test.o / value = 400496 = 0x61c70 = _rn_addroute + 0x1d4 -> b address value = 0 = 0x0 -> sp test value = 0 = 0x0 -> c 5 The application breaks on address when the instruction at address is executed. 5.2.7 Interrupting a Shell Command Occasionally it is desirable to abort the shell’s evaluation of a statement. For example, an invoked routine may loop excessively, suspend, or wait on a semaphore. This may happen as the result of errors in arguments specified in the invocation, errors in the implementation of the routine itself, or simply oversight as to the consequences of calling the routine. To regain control of the shell in such cases, press the interrupt character on the keyboard, usually CTRL+C. 2 This makes the shell stop waiting for a result and allows input of a new statement. Any remaining portions of the statement are discarded and the task that ran the function call is deleted. Pressing CTRL+C is also necessary to regain control of the shell after calling a routine on the target that ends with exit( ) rather than return. Occasionally a subroutine invoked from the shell may incur a fatal error, such as a bus/address error or a privilege violation. When this happens, the failing routine is suspended. If the fatal error involved a hardware exception, the shell automatically notifies you of the exception. For example: 2. The interrupt character matches whatever you normally use in UNIX shells as an interrupt; you can set it with the UNIX command stty intr. See your host system documentation for details. 173
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8 Customization 8.1 Introduction To
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C Tornado Tools Reference EXAMPLE R
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D Utilities Reference aoutToBin - e
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E X Resources E.1 Predefined X Reso
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Index Symbols ? (C/Tcl interpreter
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Index assembler options, specifying
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Index download options 260 download
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Index creating 100 linking 103 open
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Index info command (CrossWind) 258
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Index O Object Modules folder 102 O
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Index unreserved 82 virtual console
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Index creating 77 virtual I/O 12 VM
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