移位运算

pragma solidity >=0.4.0 <0.9.0;
import "hardhat/console.sol";

contract Move {
    fallback() external {
        console.log("fallback");
        bytes memory _bytes = msg.data;

        //0x00000008000000000000000000000000e9e7cea3dedca5984780bafc599bd69add087d560000000000000000000000000000000000000000000000000000000000000064
        console.logBytes(_bytes);
        uint256 tmp;
        address addr;
        uint256 amount;
        uint32 methodId;
        assembly {
            tmp := mload(add(add(_bytes, 0x20), 0))
            addr := mload(add(add(_bytes, 0x24), 0))//4+32
            amount := mload(add(_bytes, 0x44)) //68
            //methodId := mload(add(_bytes, 0x4))
        }
        methodId = uint32(tmp >> 224);
        console.log("method id",methodId);
        console.log("addr:",addr);
        console.log("amount:",amount);
    }

    function f() external {
        address addr1 = 0xe9e7CEA3DedcA5984780Bafc599bD69ADd087D56;
        uint256 amount = 100;
        address(this).call(abi.encodeWithSelector(0x00000008, addr1,amount));
    }
}

const { expect } = require("chai");
const { ethers } = require("hardhat");

constractName = "Move";

describe("contract", function () {
  it("test", async function () {
    const TestContract = await ethers.getContractFactory(constractName);
    const testContract = await TestContract.deploy();
    await testContract.f();
  });
});

fallback
0x00000008000000000000000000000000e9e7cea3dedca5984780bafc599bd69add087d560000000000000000000000000000000000000000000000000000000000000064
method id 8
addr: 0xe9e7cea3dedca5984780bafc599bd69add087d56
amount: 100