mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
ef6ff2f055
Deprecates `block.difficulty` and disallow `difficulty()` in inline assembly for EVM versions >= paris. The change is due to the renaming introduced by EIP-4399 (see: https://eips.ethereum.org/EIPS/eip-4399). Introduces `block.prevrandao` in Solidity and `prevrandao()` in inline assembly for EVM versions >= paris. Co-authored-by: Alex Beregszaszi <alex@rtfs.hu> Co-authored-by: Daniel <daniel@ekpyron.org> Co-authored-by: matheusaaguiar <95899911+matheusaaguiar@users.noreply.github.com> Co-authored-by: Nikola Matić <nikola.matic@ethereum.org>
78 lines
2.1 KiB
C++
78 lines
2.1 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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#include <libevmasm/Disassemble.h>
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#include <libsolutil/Common.h>
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#include <libsolutil/CommonIO.h>
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#include <functional>
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using namespace std;
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using namespace solidity;
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using namespace solidity::util;
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using namespace solidity::evmasm;
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void solidity::evmasm::eachInstruction(
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bytes const& _mem,
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langutil::EVMVersion _evmVersion,
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function<void(Instruction,u256 const&)> const& _onInstruction
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)
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{
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for (auto it = _mem.begin(); it < _mem.end(); ++it)
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{
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Instruction const instr{*it};
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int additional = 0;
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if (isValidInstruction(instr))
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additional = instructionInfo(instr, _evmVersion).additional;
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u256 data{};
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// fill the data with the additional data bytes from the instruction stream
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while (additional > 0 && std::next(it) < _mem.end())
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{
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data <<= 8;
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data |= *++it;
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--additional;
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}
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// pad the remaining number of additional octets with zeros
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data <<= 8 * additional;
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_onInstruction(instr, data);
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}
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}
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string solidity::evmasm::disassemble(bytes const& _mem, langutil::EVMVersion _evmVersion, string const& _delimiter)
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{
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stringstream ret;
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eachInstruction(_mem, _evmVersion, [&](Instruction _instr, u256 const& _data) {
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if (!isValidInstruction(_instr))
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ret << "0x" << std::uppercase << std::hex << static_cast<int>(_instr) << _delimiter;
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else
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{
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InstructionInfo info = instructionInfo(_instr, _evmVersion);
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ret << info.name;
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if (info.additional)
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ret << " 0x" << std::uppercase << std::hex << _data;
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ret << _delimiter;
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}
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});
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return ret.str();
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}
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