On Mon, Sep 08, 2014 at 07:35:47PM +0100, Mark Charlebois wrote: > When I compile > > int main() > { > u64 foo, tmp; > > // This fails for clang but not gcc > asm volatile( > " mrs %0, mair_el1\n" > " bfi %0, %1, #%2, #8\n" > " msr mair_el1, %0\n" > " isb\n" > : "=&r" (tmp) > : "r" (foo), "i" (MT_NORMAL * 8)); > } > > Clang fails and GCC generates: > > 00000000004004f0 <main>: > 4004f0: d538a208 mrs x8, mair_el1 > 4004f4: b3601d08 bfi x8, x8, #32, #8 > 4004f8: d518a208 msr mair_el1, x8 > 4004fc: d5033fdf isb > 400500: 2a1f03e0 mov w0, wzr > 400504: d65f03c0 ret
Ok, so we can just drop the '#' prefix as it probably shouldn't be there anyway. Can you send a patch making just that change, please? Will -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/