iterate <instr,opcode,postbyte>, blsi,0F3h,3, blmsk,0F3h,2, blsr,0F3h,1

Code:

        macro instr? dest*,src*
                x86.parse_operand@dest dest
                x86.parse_operand@src src
                if @dest.type = 'reg' & (@src.type = 'mem' | @src.type = 'reg')
                        if @dest.size < 4
                                err 'invalid operand size'
                        else if @src.size and not @dest.size
                                err 'operand sizes do not match'
                        end if
                        if @dest.size = 8
                                if x86.mode < 64
                                        err 'instruction requires long mode'
                                end if
                                AVX.store_instruction@src 16,VEX_0F38_W1,opcode,postbyte,@dest.rm
                        else
                                AVX.store_instruction@src 16,VEX_0F38_W0,opcode,postbyte,@dest.rm
                        end if
                else
                        err 'invalid combination of operands'
                end if
        end macro
    

end iterate