Debug Manual

Debug Commands
Debug Manual—421921-003
4-67
S[TOP] Command
op
is one of these operators:
expression-2
is a 16-bit word expression.
Considerations
•
You cannot resume a process that entered Debug either because it received a
nondeferrable signal or because a synchronous trap occurred. A signal is
nondeferrable if it was generated by the system because the process cannot
continue executing the instruction stream. The only traps from which you can
resume are the looptimer trap and the arithmetic overflow trap, provided that the T
and V bits are not both set in the ENV register.
If you enter an R command on a nonresumable process, the process is deleted
after Debug exits with the same Guardian Stop message or OSS wait status as
would have been generated had the signal or trap terminated the process without
entering Debug.
Example
This command sets an execute memory-access breakpoint at offset %42 with two
conditional resume requests:
100,02,00033-BM 42, (R K17 < 12; R R0 < 54;)
S[TOP] Command
The STOP (or S) command deletes an application process. The form of the STOP
command is:
< resume if expression-1 is less than expression-2. This operator
does an unsigned comparison.
> resume if expression-1 is greater than expression-2. This
operator does an unsigned comparison.
= resume if expression-1 is equal to expression-2.
<> resume if expression-1 is not equal to expression-2.
S[TOP]
Note. The process deletion is treated as a normal deletion (for example, a system message -5
is sent to the creator of the deleted process).