lldb doesn't support powerpc64 ELFv1 function descriptors

[chmeeedalf]

Bugzilla Link	27256
Resolution	WONTFIX
Resolved on	Mar 01, 2021 07:20
Version	unspecified
OS	FreeBSD
CC	@hfinkel,@nemanjai

Extended Description

LLDB is nearly complete for powerpc, but powerpc64 support needs function descriptors to get proper symbol tracking. PowerPC64 doesn't use normal function pointers in ELFv1 (big-endian, little endian now uses ELFv2, which does use normal function pointers), but instead uses function descriptors. LLDB can't quite parse this correctly, so disassembly doesn't work quite right. This is one of the last pieces needed for supporting powerpc64.

[chmeeedalf]

The universe has moved on from ELFv1. FreeBSD uses ELFv2 even for big endian as of FreeBSD 13.