NM callable only.
Arms the system debugger call from a process abort.
Operation Notes |
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The process enabling the system debugger can be the current process or
any child of the current process created after the intrinsic call.
The commands are contained in a character array, left-justified, with a
delimiting character as the first and last character of the command string.
Before a process aborts, Debug is called to execute the
commands in cmdstr. Any command that attempts to obtain
user input causes an error when executed by Debug.
If the process that aborts is
being run from a job, the process terminates after executing
the command string. If the process is being run from a session,
then after the specified command string has been executed,
Debug stops to accept interactive commands with I/O
performed at the user terminal if the following
conditions are met: the abort did not occur while in system code;
and the process entered
the abort code through a native mode interrupt (typically caused by
arithmetic and code related traps).
Once Debug accepts interactive input, the user is free to
enter any DEBUG command. The user may resume the
process or terminate it with the Debug CONTINUE command.
If the abort is caused by a stack overflow, a stack trace
is printed and the process is terminated immediately and the command string is not
executed.
