Solidity Interface & Canonical Declaration
function revokeRole(bytes32 role, address account) external
撤销指定账户已拥有的角色权限。
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) | revokeRole(bytes32,address) 的 4 字节函数选择器 |
| 0x04 ~ 0x23 (32B) | bytes32 | role | 待撤销的角色标识符 |
| 0x24 ~ 0x43 (32B) | address | account | 被撤销角色的账户 |
Keccak-256 密码学哈希推导链
标准 ASCII 签名字符串: revokeRole(bytes32,address)
完整 256 位 Keccak 哈希: 0xd547741fd8d55981251e167708119763c372f2b41e85a1468b0a759b055a009f
截取前 4 字节 (Big-Endian): 0xd547741f
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 0xd547741f and branch
[0x0006] DUP1
[0x0007] PUSH4 0xd547741f
[0x000c] EQ
[0x000d] PUSH2 0x0050
[0x0010] JUMPI // Jump to implementation if matched