Messages in this thread | | | Date | Mon, 14 Oct 2013 23:57:29 +0800 | From | Jiang Liu <> | Subject | Re: [PATCH v2 0/7] Optimize jump label implementation on ARM64 |
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On 10/14/2013 11:40 PM, Russell King - ARM Linux wrote: > On Sun, Oct 13, 2013 at 10:50:20PM +0800, Jiang Liu wrote: >> To enable this feature, your toolchain must support "asm goto" extension >> and "%c" constraint extesion. Current GCC for AARCH64 doesn't support >> "%c", so you need a GCC patch similiar to this: > > Oh god, not that again. I've no idea why ARM stuff has such a problem with > supporting this very useful "%c" GCC constraint. Aarch32 didn't for ages > consequently we now have horrid hacks around it in the kernel source > because our compilers suck. Seems Aarch64 is doomed to repeat the same > stupid mistakes. :( > We need to do the same trick for ARM64 too:)
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