steve smithers wrote:
If Hercules is configured as an S/390 to keep the guest operating system
(e.g. Linux) happy, is it possible to validate that a binary is
completely safe to run on an S/370, i.e. contains no 390-specific features?
I'm not exactly clear on what you are asking. You could turn off the 390
features on Hercules and see if it crashes, or you could ensure you don't
generate thme by using some compiler switch, or you could remove the macros
required for the IBM Assembler to support the mods, they will cause assembly
errors. Or what ...?
But assuming that an initial port is to Linux, you need Hercules to
provide S/390 features or the operating system won't run. The way I read
it, if you're also targeting classic operating systems such as VM/370
then the only way to prove that the code generation is 370-safe is to
run the code on a (simulated) 370: there's no way of testing compliance
at an earlier stage.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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