Update riscv64 handling.

Given that it should be impossible for cores to have different vlenb
values, modify the code to always get the vlenb locally when on a
riscv processor. Add error messages and abort when incorrect code paths
are executed.

Test: All unit tests pass on host.
Test: All unit tests pass on arm64 device.
Test: All unit tests pass on riscv emulator.
Test: Debuggerd unit tests pass on riscv emulator.
Change-Id: I14775fe630a3a2feaf2b9570636f20f843a1f185
5 files changed
tree: c289046d9143a2d23e80ae59e95467f78d60757f
  1. libunwindstack/
  2. OWNERS
  3. PREUPLOAD.cfg