add hints for mips registers that may need restore
"sw $10, %2 \n\t" \
: "=m" (c), "=m" (d), "=m" (s) \
: "m" (s), "m" (d), "m" (c), "m" (b) \
- : "$9", "$10", "$11", "$12", "$13", "$14", "$15" \
+ : "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$lo", "$hi" \
);
#endif /* MIPS */
