Messages in this thread | | | Date | Thu, 30 Nov 2006 14:32:46 -0800 | From | Andrew Morton <> | Subject | Re: [Bugme-new] [Bug 7602] New: Failure on compilation: include/asm/bitops.h:122: error: inconsistent operand constraints in an `asm' in nfs_access_add_cache() |
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On Thu, 30 Nov 2006 23:22:00 +0100 Andi Kleen <ak@suse.de> wrote:
> > > > static __inline__ int __test_and_set_bit(int nr, volatile void * addr) > > { > > int oldbit; > > > > __asm__( > > "btsl %2,%1\n\tsbbl %0,%0" > > :"=r" (oldbit),"+m" (ADDR) > > :"dIr" (nr)); > > return oldbit; > > } > > > > explodes with gcc-3.4.4. > > Known issue. The new form is correct and needed, but the old gcc doesn't accept > it. I haven't gotten a form that is both and correct and works on the old compiler > out of the gcc hackers I asked.
Oh, thanks.
What does "d" do, btw? My gcc info page only covers "x86" and says only "`d' register"
(And, more importantly, where is the best description of gcc asm constraints?) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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