Re: [PATCH 0/2] Make badr macro compatible with newer GAS versions

From: Guenter Roeck
Date: Tue Jun 19 2018 - 16:32:32 EST


On Tue, Jun 19, 2018 at 09:26:31PM +0200, Ard Biesheuvel wrote:
> Work around the mindless and backward incompatible change in GAS that
> prevents us from using a simple addition to set the Thumb bit in local
> symbol references taken using 'adr' instructions (#2)
>
> As a preparatory step, remove badr occurrences in ARM code sequences
> contained in Thumb2 kernels.
>
> Ard Biesheuvel (2):
> ARM: avoid badr macro for switching to Thumb-2 mode
> ARM: assembler: prevent ADR from setting the Thumb bit twice
>

This doesn't work for images built with a toolchain based on gcc 7.3.0
and binutils 2.28.1. It _does_ work for images built with gcc 7.3.0/
binutils 2.30.

Guenter