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9655b9328a
Add instructions of RR1 opcode format, that have 0xb3 as first opcode. Add helper functions mulh, mulmh and mulrh, that compute multiplication, with multiprecision (mulmh) or rounding (mulrh) of 4 halfwords, being either low or high parts of two 32 bit regs. Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Reviewed-by: Richard Henderson <rth@twiddle.net>