[PATCH] arm: boot/compressed: fix decompressor header layout for v7-M

[Russell King - ARM Linux]

On Fri, May 19, 2017 at 06:16:36PM +0100, Robin Murphy wrote:
> On 19/05/17 17:59, Ard Biesheuvel wrote:
> > Indeed. Apart from the error in the second line, this sequence should
> > be equivalent, but the nested macro invocations don't make it clearer
> > imo.
> > 
> > I could add some more comments as well if that helps?
> 
> Hmm, couldn't it be ISA-agnostic?
> 
> 	ldr pc, 1f
> 	.ltorg
> THUMB(	.thumb	)
> 	...
> 
> given that that should be interworking on anything where THUMB() is
> valid in the first place.

Unfortunately not, this is PIC code, so we must not have anything that
contains an absolute address.  LDR to branch is out of the question.

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