[PATCH][GAS] aarch64: Add DSB instruction Armv8.7-a variant

[Przemyslaw Wirkus]

Hi,

> -----Original Message-----
> From: Joseph Myers <joseph@codesourcery.com>
> Sent: 28 October 2020 18:24
> To: Przemyslaw Wirkus <Przemyslaw.Wirkus@arm.com>
> Cc: Binutils <binutils@sourceware.org>; Marcus Shawcroft
> <Marcus.Shawcroft@arm.com>
> Subject: Re: [PATCH][GAS] aarch64: Add DSB instruction Armv8.7-a variant
> 
> This breaks building GCC (master) for aarch64-linux-gnu.  Building libgcc, I see:
> 
> /tmp/ccYijJ81.s:79: Error: missing immediate expression at operand 1 -- `dsb
> ish'
> /tmp/ccYijJ81.s:124: Error: missing immediate expression at operand 1 -- `dsb
> ish'
> /scratch/jmyers/glibc/many11/src/gcc/libgcc/static-object.mk:17: recipe for
> target 'sync-cache.o' failed
>
> If that error is intended, there needs to be a corresponding GCC patch to fix
> the build with new binutils.

Thank you for reporting.

This is not intentional. I will check this tomorrow morning.
This will most probably require fix in Binutils.
 
> --
> Joseph S. Myers
> joseph@codesourcery.com