HP 3000 Manuals

System Debug Reference Manual

Debugging Emulated CM Code 

Debugging emulated CM code is relatively straightforward.  Since each CM
instruction is fetched and emulated, it is necessary to know only where
you wish to set a breakpoint.

For emulated CM code you can break at any instruction:

     $ cmdebug > B PROC+%6 
     $ cmdebug > B PROC+%10 
     $ cmdebug > B PROC+%15 

The debugger places a special BRKP instruction at the specified
addresses.  When an emulated breakpoint is encountered, the emulator
traps it into Debug before the original instruction is emulated.  The
environment variable entry_mode is set to "cm", and the user enters
CMDebug.

                 CM Object Code

                 CM Instructions

                 +-------------+
                 | PROC+%0     |
                 | PROC+%1     |
                 | PROC+%2     |
                 | PROC+%3     |
         P  >    | PROC+%4     |
                 | PROC+%5     |
             [1] | PROC+%6     |    <- Breakpoints are set in the object code
                 | PROC+%7     |       at the specified addresses
             [2] | PROC+%10    |
                 | PROC+%11    |
                 | PROC+%12    |
                 | PROC+%13    |
                 | PROC+%14    |
             [3] | PROC+%15    |
                 | PROC+%16    |
                 +-------------+

MPE/iX 5.0 Documentation