Re: subtle bug in <include/asm-i386/unistd.h>
Andi Kleen (ak@muc.de)
31 Mar 1999 17:29:18 +0200
markus.oberhumer@jk.uni-linz.ac.at (Markus F.X.J. Oberhumer) writes:
>
> --- include/asm/unistd.h.orig Tue Jan 26 16:00:03 1999
> +++ include/asm/unistd.h Wed Mar 31 13:35:30 1999
> @@ -214,7 +214,7 @@
> long __res; \
> __asm__ volatile ("int $0x80" \
> : "=a" (__res) \
> - : "0" (__NR_##name)); \
> + : "a" (__NR_##name)); \
> __syscall_return(type,__res); \
> }
??? "0" means refer to operand 0, which is the "=a". Please see
the gcc manual (C Extensions/Extended Asm) for read-write constraints.
This is the prefered way to express them.
-Andi
--
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