z/OS MVS Program Management: Advanced Facilities
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Examples of RLD data items

z/OS MVS Program Management: Advanced Facilities
SA23-1392-00

In this section, we will give some examples showing how RLD elements can be used.
  • The four types of address constant used in current programs can be implemented very simply: the R- and P-pointers and P-position offset are set in the usual way, and the sequencing bits in the first byte of the Flags field are set according to whether or not the three values are repeated from the previous item. The Reference/Referent and Action bytes are set as follows:
    • A-con X'0000'
    • A-con (with subtraction of the R-value) X'0002'
    • V-con X'0001'
    • Q-con X'1200'
    • CXD-con X'2201'

    The Target Field Byte Length is set appropriately (for example, to 4, for 4-byte adcons), and the remaining fields are set to zero.

Parent topic: Relocation directory record

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