[lkml]   [2021]   [Jan]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC PATCH 12/17] gcc-plugins: objtool: Add plugin to detect switch table on arm64
> From: Raphael Gault <>
> 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 <>
> [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 <>

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

 \ /
  Last update: 2021-01-27 23:18    [W:0.291 / U:0.164 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site