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SubjectRe: [RFC PATCH 12/17] gcc-plugins: objtool: Add plugin to detect switch table on arm64
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> From: Raphael Gault <raphael.gault@arm.com>
>
> This plugins comes into play before the final 2 RTL passes of GCC and
> detects switch-tables that are to be outputed in the ELF and writes
> information in an ".discard.switch_table_info" section which will be
> used by objtool.
>
> Signed-off-by: Raphael Gault <raphael.gault@arm.com>
> [J.T.: Change section name to store switch table information,
> Make plugin Kconfig be selected rather than opt-in by user,
> Add a relocation in the switch_table_info that points to
> the jump operation itself]
> Signed-off-by: Julien Thierry <jthierry@redhat.com>

Rather than tightly couple this feature to a particular toolchain via
plugin, it might be nice to consider what features could be spec'ed out
for toolchains to implement (perhaps via a -f flag).

Distributions (like Android, CrOS) wont be able to use such a feature as
is.

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