Messages in this thread | | | Date | Wed, 27 Jan 2021 14:15:57 -0800 | Subject | Re: [RFC PATCH 12/17] gcc-plugins: objtool: Add plugin to detect switch table on arm64 | From | Nick Desaulniers <> |
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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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