Tornado

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Overview
Thus the shell can be used to call run-time system functions, call any application
function, examine and set application variables, create new variables, examine and
modify memory, and even perform general calculations with all C operators.
For even more versatile shell scripting and target control, the Tornado shell
includes a complete Tcl interpreter as well as the C interpreter. The shell also
provides the essential symbolic debugging capabilities, including breakpoints,
single-stepping, a symbolic disassembler, and stack checking.
The shell interpreter maintains a command history and permits command-line
editing. The shell can redirect standard input and standard output, including input
and output to the virtual I/O channels supported by the target agent.
As a convenience, there is some overlap between WindSh and CrossWind, the
Tornado debugger. (Conversely, the CrossWind debugger provides access to all
shell built-in commands.) From the shell, you can perform the following
debugging activities:
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Display system and task status.
Generate a symbolic disassembly of any loaded module.
Set breakpoints and single-step specific tasks, even in shared code.
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Set breakpoints and single-step the system as a whole, even in interrupt
service routines.
As with all Tornado tools, these facilities provide symbolic references wherever
possible, using the symbol table managed by the target server.
The shell is described in 5. Shell.
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CrossWind Debugger
The remote source-level debugger, CrossWind, is an extended version of the GNU
source-level debugger (GDB). The most visible extension to GDB is a
straightforward graphical interface. CrossWind also includes a comprehensive Tcl
scripting interface that allows you to create sophisticated macros or extensions for
your own debugging requirements. For maximum flexibility, the debugger console
window synthesizes both the GDB command-line interface and the facilities of
WindSh, the Tornado shell.
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