Messages in this thread | | | Date | Tue, 2 Jun 2015 18:56:44 -0700 | From | Leonid Yegoshin <> | Subject | Re: [PATCH 1/3] MIPS: R6: Use lightweight SYNC instruction in smp_* memory barriers |
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On 06/02/2015 04:56 PM, David Daney wrote: > On 06/02/2015 09:15 AM, Maciej W. Rozycki wrote: >> On Tue, 2 Jun 2015, James Hogan wrote: >> >>> >>> binutils appears to support the sync_mb, sync_rmb, sync_wmb aliases >>> since version 2.21. Can we safely use them? >> >> I suggest that we don't -- we still officially support binutils >> 2.12 and >> have other places where we even use `.word' to insert instructions >> current >> versions of binutils properly handle. It may be worth noting in a >> comment >> though that these encodings correspond to these operations that you >> named. >> > > Surely the other MIPSr6 instructions are not supported in binutils > 2.12 either. So if it is for r6, why not require modern tools, and > put something user readable in here? > > No, it can be used for MIPS R2 also.
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