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🍝 add my favorite opcodes

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bt3gl 2022-09-29 01:18:39 -07:00 • committed by GitHub
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evm_and_opcodes/my_favorite_opcodes.md
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## 🐼 my favorite opcodes ## 🐼 my favorite opcodes
<br> <br>
| opocde | name | min gas | details |
| ----------- | ----------- | ----------- | --------------- |
| 20 | SAH3 | 30 | keccak-256 hash of the given data in memory |
| 31 | BALANCE | 100 | balance of a given 20-byte address in wei |
| 33 | CALLER | 33 | the 20-byte address of the last caller account (except delegate call) |
| 3A | GASPRICE | 2 | gas price in wei per gas |
| 40 | BLOCKHASH | 20 | hash of the chosen block, or 0 if the block is not the valid range |
| ~☠️44🪦~ | DIFFICULT | 😵 | current block difficulty |
| 45 | GASLIIT | 2 | get gas limit |
| 48 | BASEFEE | 2 | get base fee in wei |
| 5A | GAS | 2 | remaining gas after instructions |
| F0 | CREATE2 | 32000 | create a new contract - the new account's code is set to the return data resulting from executing the inialisation code - the destination address is calculated as `initialisation_code = memory[offset:offset+size]` and
`address = keccak256(0xff + sender_address + salt + keccak256(initialisation_code))[12:]` |
| F1 | CALL | 100 | create a new sub context and execute the code of the given account, then resumes the current one |
| F2 | CALLCODE | 100 | create a new sub context and execute the code of the given account - the storage remains the same |
| F4 | ✨DELEGATECALL✨ | 100 | create a new sub context and execute the code of the given account - the storage, the current sender, and the current value remain the same |
| FA | STATICCALL | 100 | create a new sub context and execute the code of the given account, then resumes the current one - equivalent to CALL, except that it does not allow any state modifying instructions or sending ETH in the sub context |
| FF | SELFDESTRUCT | 5000 | the new account is registered to be destroyed at the end of the current transaction |