Disassembles a single NM or CM assembly instruction, based on the current
mode.
Examples |
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$nmdebug > dis 6bc23fd9
STW 2,-20(0,30)
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This NM example disassembles the NM word $6bc23fd9 into the STW
instruction.
$nmdebug > dis e84001d8
BL $000000f4,2
$nmdebug > dis e84001d8, a.4adeb4
BL test_proc+$68,2
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This NM example disassembles the word $e84001d8 into a BL
instruction. In the second command, the virtual address of the instruction
is specified, and the disassembler is able to compute and to display the
effective procedure name target of the branch.
%cmdebug > dis 41101
LOAD DB+%101
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This CM example disassembles the single CM word %41101
into the LOAD DB+%101 instruction.
%cmdebug > dis 20477 43
LDDW SDEC=1
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This CM example disassembles the two CM words, %20477 and %43,
into the LDDW SDEC=1 instruction.
%cmdat > dis 31163
PCAL %163
%cmdat > dis 31163,,sys(25.0)
PCAL ?SWITCH'TO'NM'
%cmdat > dis 31163,,sys(1.0)
PCAL ?ATTACHIO
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These CM examples involve the CM PCAL instruction.
In the first example, 31163 is recognized as the PCAL instruction,
but the STT number is invalid for the current CM segment.
In the second example, the instruction is disassembled as if it were found
in CM logical segment SYS %25, and the resulting destination
of the PCAL is displayed as ?SWITCH'TO'NM. The third example
indicates that within CM logical segment SYS 1, the resulting
target of a PCAL %163 is ?ATTACHIO.
%cmdat > var n 1
%cmdat > while 1 do {w "stt: " n:"w3" " " ;dis 31000+n; var n n+1}
stt: %1 PCAL ?TERMINATE
stt: %2 PCAL ?TERMINATE
stt: %3 PCAL ?ABORTJOB
stt: %4 PCAL ?ACTIVATE
stt: %5 PCAL ?ADOPT
stt: %6 PCAL ?ONENET'ADOPT
stt: %7 PCAL ?CREATEPROCESS
stt: %10 PCAL ?EXEC'TERMINATE
stt: %11 PCAL ?GET'PLFD'TBLPTR
stt: %12 PCAL ?GETORIGIN
stt: %13 PCAL ?GETPRIORITY
stt: %14 PCAL ?GETPROCID
stt: %15 PCAL ?GETPROCINFO
stt: %16 PCAL ?JSM'TO'CI'PIN
stt: %17 PCAL ?KILL
stt: %20 PCAL ?PROCINFO
stt: %21 PCAL ?PROCTIME
stt: %22 PCAL ?SET'JSM'TIME'LI
stt: %23 PCAL ?SET'PLFD'TBLPTR
stt: %24 PCAL ?SUSPEND
stt: %25 PCAL ?XCONTRAP
stt: %26 PCAL ?NM'BREAKCONTROL
stt: %27 PCAL ?SETSERVICE
stt: %30 PCAL ?REQUESTSERVICE
stt: %31 PCAL ?RESETCONTROL
stt: %32 PCAL ?CAUSEBREAK
stt: %33 PCAL ?CAUSEBREAK'
stt: %34 PCAL ?BRK'IN'BREAK
stt: %35 PCAL ?BRK'ABORT
stt: %36 PCAL ?BRK'RESUME
control-Y encountered
%cmdat >
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This example demonstrates how a simple loop can be used to display the
targets for each STT entry within the current CM segment. Since we know
that %31000 is the PCAL instruction, we simply add the
desired STT number and use the DIS command to display the target
entry point name. Control-Y is used to terminate the loop.
