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Fix writable length of the index register.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3431 c046a42c-6fe2-441c-8c8c-71466251a162
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ths 2007-10-23 23:58:21 +00:00
parent 7d307e9edc
commit 60445285a8
1 changed files with 8 additions and 1 deletions
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9
target-mips/op.c
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@ -1481,7 +1481,14 @@ void op_mfc0_desave (void)
void op_mtc0_index (void)
{
env->CP0_Index = (env->CP0_Index & 0x80000000) | (T0 % env->tlb->nb_tlb);
int num = 1;
unsigned int tmp = env->tlb->nb_tlb;
do {
tmp >>= 1;
num <<= 1;
} while (tmp);
env->CP0_Index = (env->CP0_Index & 0x80000000) | (T0 & (num - 1));
RETURN();
}