TOPS-10 Monitor Calls Manual Volume 2 AA-K039D ... - Trailing-Edge

SNOOP. [CALLI 176]
4 .SONUL
Null function. This function allows you to
execute code inserted at label BP$OOO, after
ensuring that your job owns the SNOOP resource.
This may be used by a program that must execute
code in monitor context and wants to ensure that
only this program can invoke the inserted code.
If you do not own the SNOOP resource, the
instruction at BP$OOO is not executed, and the
error code SOSAS% is returned.
SKIP RETURN
The indicated function has been performed.
ERROR RETURN
One of the following error codes is returned in the ac:
Code
1
2
3
4
5
6
7
10
11
EXAMPLES
Symbol
SOIAL%
SONPV%
SOSAS%
SOMBX%
SOIBI%
SONFS%
SOADC%
SOINL%
SOWMS%
Error
Illegal argument list.
Not enough privileges.
Another program already snooping.
Maximum number of breakpoints exceeded.
Breakpoints already inserted.
No monitor free core available.
Address check.
Program not locked in contiguous executive virtual
memory.
Monitor symbol table checksum does not match.
The monitor computes the symbol table checksum in the following
manner:
LOOP:
MOVE
SETZM
MOVE
EXCH
ROT
ADD
EXCH
AOBJN
T1, .JBSYM
CHKSUM
T2, (T1)
T2,CHKSUM
T2,1
T2,CHKSUM
T2,CHKSUM
T1,LOOP
MOVE
SNOOP.
JRST
MOVE
SNOOP.
JRST
T1, [XWD .SODBP,PUTEM]
T1,
NOGOOD
T1, [XWD .SOIBP,O]
T1,
NOBTTR
PUTEM:
EXP
EXP
EXP
JRST
EXP
JRST
6
MONITOR-CHECKSUM
12345
HOOK1
12355
HOOK2
22-402