tree 085e49e9c5c949390e61753fdf7597fc5788e6bd
parent 3c8691f568f49bf623dcb2850464d4156d95e61b
author Aurelien Jarno <aurelien@aurel32.net> 1438353505 +0200
committer Aurelien Jarno <aurelien@aurel32.net> 1438414790 +0200

tcg/mips: fix add2

The add2 code in the tcg_out_addsub2 function doesn't take into account
the case where rl == al == bl. In that case we can't compute the carry
after the addition. As it corresponds to a multiplication by 2, the
carry bit is the bit 31.

While this is a corner case, this prevents x86-64 guests to boot on a
MIPS host.

Cc: qemu-stable@nongnu.org
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>