Messages in this thread | | | Date | Sun, 11 Sep 2022 17:26:18 +0200 | From | Peter Zijlstra <> | Subject | Re: [RFC] Objtool toolchain proposal: -fannotate-{jump-table,noreturn} |
| |
On Fri, Sep 09, 2022 at 11:07:04AM -0700, Josh Poimboeuf wrote: > Alternatives > ------------ > > Another idea which has been floated in the past is for objtool to read > DWARF (or .eh_frame) to help it figure out the control flow. That > hasn't been tried yet, but would be considerably more difficult and > fragile IMO.
I though Ard played around with that a bit on ARM64. And yes, given that most toolchains consider DWARF itself best-effort, I'm not holding my breath there.
On top of that, building a kernel with DWARFs on is just so much slower..
| |