[Patch, Arm, Readelf] Support for a new pacbti unwind opcode.

[Tejas Belagod]

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> -----Original Message-----
> From: Binutils <binutils-bounces+tejas.belagod=arm.com@sourceware.org>
> On Behalf Of Tejas Belagod via Binutils
> Sent: Tuesday, October 5, 2021 9:43 AM
> To: binutils@sourceware.org
> Subject: [Patch, Arm, Readelf] Support for a new pacbti unwind opcode.
> 
> 
> Hi,
> 
> This patch adds readelf support for decoding the exception table opcode for
> restoring the RA_AUTH_CODE pseudo register defined by the EHABI
> (https://github.com/ARM-software/abi-
> aa/releases/download/2021Q1/ehabi32.pdf Section 10.3).
> 
> Tested for arm-none-eabi. OK for master?
> 
> Thanks,
> Tejas.
> 
> binutils/Changelog:
> 
> 2021-10-05  Tejas Belagod  <tejas.belagod@arm.com>
> 
> 	* readelf.c (decode_arm_unwind_bytecode): Add support to
> decode restoring
> 	RA_AUTH_CODE pseudo register.