Re: [PATCH v3 08/25] openrisc: add cmpxchg and xchg implementations

From: Peter Zijlstra
Date: Wed Feb 22 2017 - 06:20:28 EST


On Wed, Feb 22, 2017 at 04:11:37AM +0900, Stafford Horne wrote:
> + __asm__ __volatile__(
> + "1: l.lwa %0, 0(%1) \n"
> + " l.sfeq %0, %2 \n"
> + " l.bnf 1f \n"
> + " l.nop \n"
> + " l.swa 0(%1), %3 \n"
> + " l.bnf 1b \n"
> + "1: l.nop \n"
> + : "=&r"(old)
> + : "r"(ptr), "r"(old), "r"(new)
> + : "cc", "memory");

I just noticed this, but having both labels have the same name is
somewhat confusing.