SH3_MMUAA
r = _reg_read_4(SH3_MMUAA | a);
aae = _reg_read_4(SH3_MMUAA | entry_idx);
r = _reg_read_4(SH3_MMUAA | a);
aa = SH3_MMUAA | idx | (way << SH3_MMU_WAY_SHIFT);
entry = _reg_read_4(SH3_MMUAA | a);
_reg_write_4(SH3_MMUAA | a, newa);
_reg_write_4(SH3_MMUAA | a, 0);
aa = SH3_MMUAA | idx | (way << SH3_MMU_WAY_SHIFT);