Re: arm questions

[Lee Smith <Lee.Smith@arm.com>]

At 09:36 PM 4/15/99 +0100, Philip Blundell wrote:

[SNIP]

>In fact as far as Linux is concerned it probably wouldn't be an especially 
>big deal to introduce RELA in parallel with REL if we wanted to.  I think 
>there were rumblings that the ARM SDT compiler was primarily using RELA,

No. ARM only uses REL. We see no advantage to RELA. However, our ELF
linker (not yet released) handles RELA or any mix of REL and RELA
(as the ELF standard seems to intend).

AFAIK, Green Hills uses RELA only in its ARM ELF tool chain.

>so we 
>might end up doing it in order to be able to interwork with them.  Our
dynamic 
>linker can be taught to handle binaries with an arbitrary mix of reloc
types, 
>I think, and I imagine binutils can be made to handle this too if it doesn't 
>already.
>
>>   2)
>>   Whats the R_ARM_THM_XPC22 reloc for?
>>
>>I dunno.  Philip Blundell is on the list.  Phil, do you know?
>
>Actually no.  Thumb isn't really my area.  I've sent a Cc of this mail to
Lee 
>Smith (who did the original assignment of reloc numbers if I remember right).
>Lee, any ideas?

Actually, it should be R_ARM_THM_XPC23. It applies to an Architecture V5
variant BL instruction. Consider it a placeholder for now.

---Lee