target-cris/translate.c: fix out of bounds read
In function t_gen_mov_TN_preg and t_gen_mov_preg_TN, The begin check about the validity of in-parameter 'r' is useless. We still access cpu_PR[r] in the follow code if it is invalid. Which will be an out-of-bounds read error. Fix it by using assert() to ensure it is valid before using it. Signed-off-by: Nzhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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