On 12/09/2013 10:12 AM, Peter Maydell wrote:
> + if (is_high) {
> + /* SMULH and UMULH go via helpers for the 64x64->128 multiply */
> + if (is_signed) {
> + gen_helper_smulh(cpu_reg(s, rd), cpu_reg(s, rn), cpu_reg(s, rm));
> + } else {
> + gen_helper_umulh(cpu_reg(s, rd), cpu_reg(s, rn), cpu_reg(s, rm));
> + }
Should use tcg_gen_mul[su]2_i64, with a dummy temp for the first arg; the
highpart result is placed into the second arg.
r~
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