>> Interesting. A reference to _gtca() also in LE Vendor Interfaces. Hints here 
>> and there in the C/C++ docs.

> I suspect _gtca() does something similar to what is described in "Chapter 14. 
> Anchor support" in the LE Vendor Interfaces manual.


Out of curiosity, I had a look at CEEARLU. The instruction sequence matches 
what is documented in the above mentioned chapter, except for the checking of 
R12 before continuing with it. 58C0 0010      | L       R12,X'10'58CC 0000      
| L       R12,X'0'(R12)58CC 0004      | L       R12,X'4'(R12)58CC 0144      | L 
      R12,X'144'(R12)BFCF C000      | ICM     R12,X'F',X'0'(R12)4780 F022      
| BC      X'8',X'22'(,R15)BFCF C000      | ICM     R12,X'F',X'0'(R12)4780 F022  
    | BC      X'8',X'22'(,R15)07FC           | BCR     X'F',R121BCC           | 
SR      R12,R1207FE           | BCR     X'F',R14


--
Peter Hunkeler

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