Using the Tool Buttons

A tool bar has been provided for easier access to frequently used features. Not all buttons are displayed in the windows. To display buttons in a window, enable the Tool buttons choice that is listed under the Options menu. The following is a list of features that are provided:

Step over executes the current line in the program. If the current line is a call, execution is halted when the call is completed.

Step into executes the current line in the program. If the current line is a call, execution is halted at the first statement in the called function.

Step debug executes the current line in the program. The debugger steps over any function for which debugging information is not available (for example, library and system routines) and steps into any function for which debugging information is available.

Step return automatically executes the lines of code up to and including the return statement of the current function.

Run allows you to start and stop the program.

When the debugger is running, the Run button is disabled and the Halt button is enabled. You can click on the Halt button to halt the program execution. You can also interrupt the program you are debugging by selecting the Halt choice from the Run menu.


View changes the current source window to one of the other source windows. For example, you can change from the Disassembly window to the Mixed window.

Monitor Expression displays the Monitor Expression window, which allows you to type in the name of the expression you want to monitor.

Call Stack displays the Call Stack window, which allows you to view all of the active functions for a particular thread including the system calls. The functions are displayed in the order that they were called.

Registers displays the Registers window, which allows you to view all the processor and coprocessor registers for a particular thread.

Storage displays the Storage window, which shows the storage contents and the address of the storage.

Breakpoints displays the Breakpoints List window, which allows you to view all the breakpoints that have been set.

Passthru displays the Passthru window, which allows you to send commands and receive responses from KDB directly.

Debug Session Control displays the Debug Session Control window.

Growth direction allows you to change the direction that items are displayed on the stack.

Delete allows you to delete the highlighted item.

Delete all allows you to delete all the items in the window.

32-float displays the storage contents as a 32-bit floating point.

64-float displays the storage contents as a 64-bit floating point.

32-bit unsigned displays the storage contents as a 32-bit unsigned integer.

32-bit signed displays the storage contents as a 32-bit signed integer.

ASCII displays the storage contents in ASCII.

Hex and ASCII displays the storage contents in Hex and ASCII.

Change representation allows you the change the data representation.

• Refer to Executing a Program for information on step commands. 
  Refer to Setting Breakpoints for information on breakpoints.

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