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

SEGOP. [CALLI 230]
o To obtain information about a segment specified by name,
clear ST.STP and do not specify the segment number in .SGSGN.
Include the segment name in addr+3 (.SGSNM).
o To obtain information about the segments owned by a specific
job or job context, include the job/context handle in SG.CTX
and SG.JOB.
On a skip return from this function, the monitor fills in the contents
of the argument list.
This function will take the error return and error code ERSII% will be
returned if the segment number and segment name specified in the
argument list do not match.
22.148.2 FUNCTION 1 (.SGGET)
Obtains a new high segment without affecting current high
The argument list for this function is:
segments.
addr:
length" .SGGET
flags-word
BLOCK 4
filespec-pointer
In the flags-word, you can specify the following flags for this
function:
Bits
1
2
12-17
Symbol
SG.USN
SG.FFS
SG.SEC
Meaning
When set, indicates that a section number is
stored in SG.SEC.
If non-zero, the new high segment is placed into
the first free section.
If SG.USN is set, contains the section number
where the new segment should be created.
On a skip return from this function, one of the following
has been accomplished:
functions
o
If SG.USN is set and SG.FFS is clear, the contents of SG.SEC
indicate the section number to store the new high segment in.
o If both SG.USN and SG.FFS are clear, the same section from
which the argument list is given (usually the PC section) .
o
If SG.FFS is set, the section number that is actually used
will be returned in the SG.SEC field of the Flags-word. In
addition, the SG.USN flag is set and the SG.FFS flag is
cleared after the return.
The monitor fills in the argument list with information about the new
high segment on a successful return from this call.
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