Solidity Interface & Canonical Declaration
function upgradeTo(address newImplementation) external
将可升级代理合约的核心逻辑指针重定向至新的逻辑实现合约地址。
理论基础执行 Gas： 25,000 ~ 45,000 gas
返回值类型： void
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) | upgradeTo(address) 的 4 字节函数选择器 |
| 0x04 ~ 0x23 (32B) | address | newImplementation | 新的逻辑实现合约地址 |
Keccak-256 密码学哈希推导链
标准 ASCII 签名字符串： upgradeTo(address)
完整 256 位 Keccak 哈希： 0x3659cfe672549963da205df855ebfb8672cda4801e0255183bd6a6f536855df7
截取前 4 字节 (Big-Endian)： 0x3659cfe6
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 0x3659cfe6 and branch
[0x0006] DUP1
[0x0007] PUSH4 0x3659cfe6
[0x000c] EQ
[0x000d] PUSH2 0x0050
[0x0010] JUMPI // Jump to implementation if matched