[jdk8u-dev] RFR: 8270517: Add Zero support for LoongArch

[Leslie Zhai]

Hi,

I'd like to backport this patch to jdk8u. `common/autoconf/build-aux/config.guess` and `hotspot/src/os/linux/vm/os_linux.cpp` do not apply cleanly due to context difference, but it is easy to resolve them manually. `common/autoconf/platform.m4` just changed file path. A native build on LoongArch hardware is tested.


$ ./build/images/j2sdk-image/bin/java -version
openjdk version "1.8.0_392"
OpenJDK Runtime Environment (build 1.8.0_392-8u392-ga-1-b08)
OpenJDK 64-Bit Zero VM (build 25.392-b08, interpreted mode)


Thanks,
Leslie Zhai

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Commit messages:
 - Backport e92e2fd4e0bc805d8f7d70f632cce0282eb1809b

Changes: https://git.openjdk.org/jdk8u-dev/pull/413/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=413&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8270517
  Stats: 22 lines in 3 files changed: 21 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/413.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/413/head:pull/413

PR: https://git.openjdk.org/jdk8u-dev/pull/413