I looked into my code, and it look like you are right. no special regs to
set.

IStchak

ITschak Mugzach
Z/OS, ISV Products and Application Security & Risk Assessments Professional

On Thu, Dec 22, 2016 at 9:47 AM, Peter Hunkeler <p...@gmx.ch> wrote:

> I'm thinking of using a Name/Token pair to keep the address of "my"
> storage area, and X'00' to mean I first need to obtain the storage. This is
> in RENT code.
>
>
> When I get control, R13 points to a save area, which my code will use, but
> I do not yet have storage for another save area before calling IEANTRT, so
> I cannot change R13.
>
>
> The book says I do *not* have to place anything special into any register
> before calling the Name/Token Pair callable services. From this I conclude
> that the callable service routines will *not* use the save area pointed to
> by R13 (and work with only R0, R1, and R15 which are documented as being
> used).
>
>
> Can anyone confirm? I just want to double check that the doc is not
> missing some text and the services are silently assuming R13 is pointing to
> a usable save are.
>
>
> --
> Peter Hunkeler
>
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