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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. Backports commit c99d69694af4ed15b33e3f7c2e3ef6972c14358d from qemu |
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tcg-target.c | ||
tcg-target.h |