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el-addr
lc
CABSAD$, CRELAD$–Addressing Routines
Relative address to be converted. This is the address relative to some location
counter that is converted to an absolute address.
Location counter of the address to be converted. Parameter rel-addr gives the
address to be converted relative to a specific location counter. This parameter tells
the routine which location counter to use. This parameter may be given as an actual
number, a tag that has been equated to an actual number, or the address of a word
that contains the number.
elt-name
Name of the element containing the relocatable address that is to be converted to an
absolute address. The element name may be from 1 to 12 characters selected from
the set A through Z, 0 through 9, and the special characters - and $. If given as a
string, then the parameter must be surrounded by apostrophes on the procedure
call. This parameter can also be given as the address of a two-word area that
contains the name in Fieldata format, left-justified and space-filled.
pkt-addr
See 6.1.
If all of the parameters rel-addr,lc,elt-name are omitted on the call, then the routine uses
the value in register A0 for rel-addr, the value in register A1 for lc, and the value in
registers A2 and A3 for elt-name.
Returns
normal
Register A0 contains the requested absolute address and A1 contains a pointer to
the Segment Load Table (SLT$). If register A1 = 0, either the program is not
segmented or the element lies in the main segment. The absolute address returned
in A0 is always in main storage.
The following instruction causes the instruction immediately after it to be skipped if
the element is in main storage:
TP SLT$,A1
On return, H1 of register A2 contains the length of the specified location counter and
H2 of register A2 contains the starting address of that location counter, for possible
further use.
7833 1733–004 6–3