On 3/29/2017 2:27 AM, Martin Packer wrote:
As I understand it the real restriction is not being interruptible (for I/O). In which case a clever (and aren't they all nowadays?) :-) JVM might well find itself executing machine code that you'd hope wouldn't have to be copied below the bar first.
Actually, that's not a restriction at all. z/OS fully supports executing enabled code running above the bar.
What's missing is binder/loader/contents support to load/manage executable RMODE(64) modules and enough officially-supported SVC and PC-entered z/OS services to make running programs there feasible. After that, you would need compiler and HLL run-time language support from LE to open that "world" up to everyone...
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