System Debug Reference Manual (32650-90888)

ManualsBrandsHP ManualsSoftwareMPE/iX 7.5 Operating System

88 Chapter4

System Debug Command Speciﬁcations :-Exit

B (break)

$nmdebug > bs ?FREAD,#100,q,{wl "Read another 100 records";c}

added: NM |10| SYS a.0074aa34 FREAD

Set a breakpoint at the FREAD intrinsic. Every #100 times the routine is called, stop and

print out a message. The QUIET option is speciﬁed so this operation produces no extra

terminal output. The vertical bars in the breakpoint notation indicates that the process

does not stop the next time the breakpoint is encountered, since the count is not yet

exhausted.

$nmdebug > bs trap_handler:@,,,{trace ,ism}

added: NM @[1] SYS a.00668684 trap_handler

Set a system-wide breakpoint in the trap handler. This routine is in the system NL. When

the breakpoint is hit, perform a stack trace. The "@" indicates that the breakpoint is a

global

breakpoint.

$nmdebug > b pw+4

added: NM [11] PROG $115.00006984 initstudentrecord+14

Break at the address speciﬁed by adding 4 to the address of the ﬁrst line in the program

window. In this case, the program window must have been aimed at

initstudentrecord+10.

$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}

Now list all of the breakpoints just set above.

CM Code Examples

%cmdebug > loadinfo

cm PROG GRADES.DEMOCM.TELESUP

parm = #0 info = ""

cm GRP SL.DEMOCM.TELESUP

cm SYS SL.PUB.SYS

nm SYS NL.PUB.SYS SID = $a

Show the list of all currently loaded ﬁles.

%cmdebug > b ?processstudent

added: CM [1] PROG % 0.1665 ?PROCESSSTUDENT

Set a breakpoint at the entry point (indicated by the ? character) of the procedure