User`s guide

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Appendix A: dbx Commands
stop expression
Inspects the expression. If the expression is type pointer,
checks the data being pointed at. Otherwise, checks the 32
bits at the address given by the expression.
stop in procedure
Sets a breakpoint to stop execution upon entering the
specified procedure.
stop [expression|variable]
Inspects the value before executing each source line. If the
expression is of type pointer, look at the data pointed to and
watch until it changes.
If the expression is not of type pointer, look at the 32 bits at
that address (assume the expression evaluates to an
address).
stop [expression|variable] at line
Inspects the value at the given source line. Stops if the value
has changed.
If the expression is of type pointer, look at the data pointed
to and watch until it changes. If the expression is not of type
pointer, look at the 32 bits at that address (assume the
expression evaluates to an address).
stop [expression|variable] in procedure
Inspects the value at every source line within a given
procedure. Stops if the value has changed.
If the expression is of type pointer, look at the data pointed
to and watch until it changes.
If the expression is not of type pointer, look at the 32 bits at
that address (assume the expression evaluates to an
address).
stop if expression
Evaluates the expression before executing each source line.
Stops if the expression is true.