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@node Trace Generation
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@node Trace Generation
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@section Trace Generation
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@section Trace Generation
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@cindex trace generation of @value{OR1KSIM}
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@cindex trace generation of @value{OR1KSIM}
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An execution trace can be generated at run time with options passed by the command line, or via the operating system's signal passing mechanism.
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An execution trace can be generated at run time with options passed by
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the command line, or via the operating system's signal passing
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mechanism.
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The following, passed at run time, can be used to create an execution dump.
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The following, passed at run time, can be used to create an execution dump.
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@table @code
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@table @code
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@cindex @code{--trace}
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@cindex @code{--trace}
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Dump instruction just executed and any register/memory location chaged
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Dump instruction just executed and any register/memory location chaged
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after each instruction (one line per instruction).
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after each instruction (one line per instruction).
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@end table
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@end table
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Passing a signal @code{SIGUSR1} while the simulator is running toggles trace generation. This can be done with the following command, assuming @value{OR1KSIM}'s executable name is @code{or32-elf-sim}:
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Passing a signal @code{SIGUSR1} while the simulator is running toggles
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trace generation. This can be done with the following command, assuming
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@value{OR1KSIM}'s executable name is @code{or32-elf-sim}:
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@example
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@example
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pkill -SIGUSR1 or32-elf-sim
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pkill -SIGUSR1 or32-elf-sim
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@end example
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@end example
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This is useful in the case where trace output is desired after a significant amount of simulation time, where it would be inconvenient to generate trace up to that point.
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This is useful in the case where trace output is desired after a
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significant amount of simulation time, where it would be inconvenient to
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If the @code{pkill} utility is not available, the @code{kill} utility can be used if @value{OR1KSIM}'s process number is known. Use the following to determine the process ID of the @code{or32-elf-sim} and then send the @code{SIGUSR1} command to toggle execution trace generation:
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generate trace up to that point.
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If the @code{pkill} utility is not available, the @code{kill} utility
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can be used if @value{OR1KSIM}'s process number is known. Use the
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following to determine the process ID of the @code{or32-elf-sim} and
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then send the @code{SIGUSR1} command to toggle execution trace
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generation:
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@example
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@example
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ps a | grep or32-elf-sim
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ps a | grep or32-elf-sim
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kill -SIGUSR1 @emph{process-number}
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kill -SIGUSR1 @emph{process-number}
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@end example
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@end example
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