Multiply numbers without using instructions MUL, IMUL, SHL, SHR, LOOP

Question

Is it possible to calculate result of multiplication without using instructions MUL, IMUL, SHL, SHR, LOOP, JMP in x86 assembly language?

Answer 1

CPUs without a multiply instruction can generally do it with repeated addition but that becomes extremely difficult without loops.

However, since you haven't specified which specific CPU you're interested in, I would posit one that either has an instruction like:

add rt, rs, count

instruction which adds rs to rt exactly count times. That would enable you to do it without a loop or jump instruction :-)

Of course, then you could just have an paxmul instruction that does multiplication for you - not technically a mul but no doubt against the spirit of the question.

But, to be honest, this question may be seen as moot since you'd be hard pressed actually trying to find a CPU without the instructions you list.