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This page describes architectural decisions in the initial HotSpot VM PPC port from 2013. It explains extensions we made to shared code needed for PPC, but which might be also useful for other platforms.  Further it gives details of implementations in the PPC part.

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Linux: We build and run the VM on SLES 10.3 with gcc 4.1.2, but support it on other Linux distributions, too.  Google contributed a port for the new little-endian Linux variants.

We do not support as400 pase. Contributions are welcome.yet support iSeries PASE but support is upcoming. 

Processor: The port supports only 64-bit PPC machines. It recognizes Power chips 5 through 7 and generates code optimized for these processors. So far, it lacks an instruction scheduler targeted to Power 6, which is an in-order issueing processor.  Jdk 9 will contain support for Power 8.

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The port does not support tiered compilation, as the C1 compiler is not ported.

Here you find more detailed informations:

• C++ interpreter features
• C2 compiler extensions and new optimizations

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