Previous topic |
Next topic |
Contents |
Contact z/OS |
Library |
PDF
Dependent USING HLASM Language Reference SC26-4940-06 |
|
To end the domain of a dependent USING instruction, you must end
the domain of the corresponding ordinary USING instruction. In the
following example, the DROP instruction prevents the assembler from
using register 12 as a base register. The DROP instruction causes
the assembler to end the domain of the ordinary USING instruction
and the domains of the two dependent USING instructions. The storage
areas represented by INREC and OUTREC are both
within the range of the ordinary USING instruction (register 12).
To end the domain of a labeled dependent USING instruction, you
can code a DROP instruction with the USING label in the operand.
The following example shows this:
In the above example, the DROP instruction makes the labels PRIOR and POST unavailable as symbol qualifiers. When a labeled dependent USING domain is dropped, none of any subordinate
USING domains are dropped. In the following example the labeled dependent
USING BLBL1 is not dropped, even though it is dependent
on the USING ALBL2 that is dropped:
A DROP instruction is not needed:
|
Copyright IBM Corporation 1990, 2014
|