HPlogo System Debug Reference Manual > Chapter 4 System Debug Command Specifications

BL

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E0201 Edition 4 ♥
E0300 Edition 3
E0692 Edition 3

Debug only

Breakpoint list. Lists breakpoint entries, specified by index number.

Syntax


   BL [number | @ [: pin | @] ]
The BL command is used to list process-local and global (system-wide) breakpoints. Global breakpoints are always displayed after the process-local breakpoints. Users without privileged mode (PM) capability are shown only the list of process-local breakpoints. Users without PM capability may only specify PINs that are descendant processes (any generation) of the current PIN.

Parameters

number

The index number of the breakpoint entry to display. The symbol "@" can be used to display all entries. If omitted, then all entries are displayed.

pin

The PIN for the process whose breakpoint entries are to be displayed. Typically this is omitted, and pin defaults to the current process.

The character "@" can be used to indicate global breakpoint(s).

Refer to appendix C for a discussion of CM object code translation, node points, and breakpoints in translated CM code.

Examples


   $nmdebug > bl
   NM    [1] PROG 115.00006a8c PROGRAM+$270
   NM    [2] PROG 115.00006a90 PROGRAM+$274
   NM    [3] PROG 115.00005d24 processstudent
          cmdlist: {wl "Processing #" r26:"d";c}
   NM   T[4] PROG 115.00005b50 processstudent.highscore
   NM    [5] GRP 118.00015c88 average
   NM    [6] GRP 118.00015c8c average+$4
   NM    [7] GRP 118.00015c90 average+$8
   NM    [8] USER f4.0012f2b8 p_heap:P_INIT_HEAP
   NM    [9] USER f4.001f9188 U_INIT_TRAPS
   NM   [10] SYS a.0074aa34 FREAD
   [QUIET]  count: 0/64  cmdlist: {wl "Read another 100 records";c}
   NM   [11] PROG $115.00006984 initstudentrecord+14
   NM   @[1] SYS a.00668684 trap_handler
   [QUIET]  cmdlist: {trace ,ism}
Display all breakpoints. Process-local breakpoints are always displayed first, followed by all global breakpoints. See the Conventions page for a description of breakpoint notation. 

   $nmdebug > bl 3
   NM    [3] PROG 115.00005d24 processstudent
          cmdlist: {wl "Processing #" r26:"d";c}
Display process-local breakpoint number 3. 

   $nmdebug > bl :@
   NM   @[1] SYS a.00668684 trap_handler
           [QUIET]  cmdlist: {trace ,ism}
List all of the global breakpoints.

Translated Code Examples


   %cmdebug > bl
   CM    [1] GRP  %   0.13     ?AVERAGE               SEG'   (CST 112)
          Corresponding NM bp = 1
   CM    [2] PROG %   0.1665   ?PROCESSSTUDENT        SEG'   (CSTX 1)
          Corresponding NM bp = 2
   CM    [3] PROG %   0.1672   PROCESSSTUDENT+%265    SEG'   (CSTX 1)
          Corresponding NM bp = 3
   CM    [4] PROG %   0.1673   PROCESSSTUDENT+%266    SEG'   (CSTX 1)
          Corresponding NM bp = 3

   %cmdebug > nm
   $nmdebug > bl
   NM    [1] TRANS 3d.0016962c SEG':?AVERAGE
          CM Ref count = 1
   NM    [2] TRANS 48.0000a610 SEG':?PROCESSSTUDENT
          CM Ref count = 1
   NM    [3] TRANS 48.0000a66c SEG':PROCESSSTUDENT+%265
          CM Ref count = 2
   NM    [4] TRANS 20.0000b940 FSEG:?FREAD
          count: 0/64  cmdlist: {wl "Read another 100 records";c}
          CM Ref count = 1
Show all of the CM and NM breakpoints. Notice that the CM breakpoints all have corresponding NM breakpoints. The NM breakpoints show a counter reflecting the number of corresponding CM breakpoints. However, the list of corresponding CM breakpoint numbers is not part of the NM breakpoint listing.

Limitations, Restrictions

If breakpoints are listed for a process other than the current process, Debug has no knowledge of the procedure names associated with the addresses unless the specified process is running the exact same program file.



BD

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