S, SS
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Syntax
S[S] [num_instrs] [ L[OUD] | Q[UIET] ]
This command single steps the specified number of instructions.
If the user attempts to single step into the system NL or SL (or
any portion of code he/she does not have access to view), Debug
stops single stepping and free-runs the process (for example, proceed
as if the CONTINUE command had been issued). For native mode processes,
Debug stops processing as soon as it returns from the inaccessible
code. For compatibility mode processes, the process continues to
run until it encounters a breakpoint.
Parameters
- num_instrs
The number of instructions to be executed. If omitted, a single instruction is executed. Negative values are converted to positive values.
- L[OUD] | Q[UIET]
If LOUD is specified, the address where the process stopped is printed. If QUIET is specified, no message is displayed. The default is LOUD.
Examples
%cmdebug > s %cmdebug >Single step to the next instruction.
%cmdebug > ss 5 l Step to: PROG %0.172 %cmdebug >Step 5 instructions "loudly", that is, print the ending address.
$nmdebug > s #20 l Step to: 115.00005f0c processstudent+$1e8 $nmdebug >Step 20 instructions, and print the address when stopped.
Limitations, Restrictions
The single step command cannot be used within a macro that is invoked as a function.
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