"Craddock, Chris"  wrote:
(after someone else wrote)
>> And a corollary would be "why DID IBM make it so 
> darned hard to write reentrant assembler code?"

> Umm... because they really weren't thinking about the problem. Back in
> the day things were considerably simpler and there was really no need
> for a more elaborate run time environment, or so they thought. 

It couldn't have been much longer.  It was needed for PL/I,
which must have been started pretty early in the OS/360 design.

But Fortran G and H generate ordinary non-reentrerable code,
with static data in the same CSECT.  The Fortran G and H library
even uses self modifying code!  

-- glen

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