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PowerPC: Support ELFv2 ABI

A. Wilcox requested to merge awilfox/orc:master into master

This patch adds support to ORC for the ELFv2 ABI on PowerPC. The ELFv2 ABI does not use function descriptors.

Tested working on:

  • Power Mac G5
  • IBM POWER6 server
  • Raptor Talos II

... all using musl libc 1.1.19 on Linux kernel 4.14. Test suite passes fully, and GStreamer appears to use the vector unit for playback of Ogg files.

Combined with the patch in #6 (closed) this may support LE as well. I don't have a PowerPC little endian computer to test on, however, so I really do not know.

Signed-off-by: A. Wilcox

Edited by A. Wilcox

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