Uniswap V2 Automated Market Maker KECCAK-256 VERIFIED
WEB3 逆向安全工程 // UNISWAP V2 标准
0x0902f1ac

Solidity Interface & Canonical Declaration

function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast)

查询并返回该流动性资金池当前锁定的资产储备金规模及最近更新的时间戳。

理论基础执行 Gas: 2,100 ~ 4,000 gas (view)
返回值类型: (uint112,uint112,uint32)

Calldata 调用数据 ABI 编码布局账本

Calldata Offset Type Parameter Name Semantic Role
0x00 ~ 0x03 (4B) bytes4 Method ID (msg.sig) getReserves() 的 4 字节函数选择器

Keccak-256 密码学哈希推导链

标准 ASCII 签名字符串: getReserves()
完整 256 位 Keccak 哈希: 0x0902f1ac5dbaeedd3217f11b3cbaf929216c9c5abc2d69da89d54964bead575d
截取前 4 字节 (Big-Endian): 0x0902f1ac

EVM 运行时调度器汇编代码特征 (Dispatcher Opcodes)

// 1. Load the first 32 bytes of transaction calldata [0x0000] PUSH1 0x00 [0x0002] CALLDATALOAD // 2. Right-shift by 224 bits (0xe0) to isolate the 4-byte selector [0x0003] PUSH1 0xe0 [0x0005] SHR // 3. Match against target selector 0x0902f1ac and branch [0x0006] DUP1 [0x0007] PUSH4 0x0902f1ac [0x000c] EQ [0x000d] PUSH2 0x0050 [0x0010] JUMPI // Jump to implementation if matched