mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
135 lines
3.1 KiB
C++
135 lines
3.1 KiB
C++
/*
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This file is part of cpp-ethereum.
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cpp-ethereum 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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cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file Assembly.cpp
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* @author Gav Wood <i@gavwood.com>
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* @date 2014
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*/
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#include "AssemblyItem.h"
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#include <fstream>
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using namespace std;
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using namespace dev;
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using namespace dev::eth;
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unsigned AssemblyItem::bytesRequired(unsigned _addressLength) const
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{
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switch (m_type)
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{
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case Operation:
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case Tag: // 1 byte for the JUMPDEST
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return 1;
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case PushString:
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return 33;
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case Push:
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return 1 + max<unsigned>(1, dev::bytesRequired(m_data));
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case PushSubSize:
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case PushProgramSize:
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return 4; // worst case: a 16MB program
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case PushTag:
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case PushData:
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case PushSub:
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return 1 + _addressLength;
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case PushLibraryAddress:
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return 21;
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default:
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break;
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}
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BOOST_THROW_EXCEPTION(InvalidOpcode());
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}
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int AssemblyItem::deposit() const
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{
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switch (m_type)
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{
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case Operation:
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return instructionInfo(instruction()).ret - instructionInfo(instruction()).args;
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case Push:
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case PushString:
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case PushTag:
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case PushData:
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case PushSub:
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case PushSubSize:
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case PushProgramSize:
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case PushLibraryAddress:
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return 1;
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case Tag:
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return 0;
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default:;
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}
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return 0;
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}
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string AssemblyItem::getJumpTypeAsString() const
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{
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switch (m_jumpType)
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{
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case JumpType::IntoFunction:
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return "[in]";
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case JumpType::OutOfFunction:
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return "[out]";
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case JumpType::Ordinary:
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default:
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return "";
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}
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}
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ostream& dev::eth::operator<<(ostream& _out, AssemblyItem const& _item)
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{
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switch (_item.type())
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{
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case Operation:
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_out << " " << instructionInfo(_item.instruction()).name;
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if (_item.instruction() == eth::Instruction::JUMP || _item.instruction() == eth::Instruction::JUMPI)
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_out << "\t" << _item.getJumpTypeAsString();
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break;
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case Push:
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_out << " PUSH " << hex << _item.data();
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break;
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case PushString:
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_out << " PushString" << hex << (unsigned)_item.data();
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break;
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case PushTag:
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_out << " PushTag " << _item.data();
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break;
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case Tag:
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_out << " Tag " << _item.data();
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break;
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case PushData:
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_out << " PushData " << hex << (unsigned)_item.data();
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break;
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case PushSub:
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_out << " PushSub " << hex << h256(_item.data()).abridgedMiddle();
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break;
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case PushSubSize:
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_out << " PushSubSize " << hex << h256(_item.data()).abridgedMiddle();
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break;
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case PushProgramSize:
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_out << " PushProgramSize";
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break;
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case PushLibraryAddress:
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_out << " PushLibraryAddress " << hex << h256(_item.data()).abridgedMiddle();
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break;
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case UndefinedItem:
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_out << " ???";
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break;
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default:
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BOOST_THROW_EXCEPTION(InvalidOpcode());
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}
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return _out;
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}
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