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Diffstat (limited to 'libevmasm/AssemblyItem.cpp')
| -rw-r--r-- | libevmasm/AssemblyItem.cpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/libevmasm/AssemblyItem.cpp b/libevmasm/AssemblyItem.cpp new file mode 100644 index 00000000..d7051064 --- /dev/null +++ b/libevmasm/AssemblyItem.cpp @@ -0,0 +1,134 @@ +/* + This file is part of cpp-ethereum. + + cpp-ethereum is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + cpp-ethereum is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>. +*/ +/** @file Assembly.cpp + * @author Gav Wood <i@gavwood.com> + * @date 2014 + */ + +#include "AssemblyItem.h" +#include <fstream> + +using namespace std; +using namespace dev; +using namespace dev::eth; + +unsigned AssemblyItem::bytesRequired(unsigned _addressLength) const +{ + switch (m_type) + { + case Operation: + case Tag: // 1 byte for the JUMPDEST + return 1; + case PushString: + return 33; + case Push: + return 1 + max<unsigned>(1, dev::bytesRequired(m_data)); + case PushSubSize: + case PushProgramSize: + return 4; // worst case: a 16MB program + case PushTag: + case PushData: + case PushSub: + return 1 + _addressLength; + case PushLibraryAddress: + return 21; + default: + break; + } + BOOST_THROW_EXCEPTION(InvalidOpcode()); +} + +int AssemblyItem::deposit() const +{ + switch (m_type) + { + case Operation: + return instructionInfo(instruction()).ret - instructionInfo(instruction()).args; + case Push: + case PushString: + case PushTag: + case PushData: + case PushSub: + case PushSubSize: + case PushProgramSize: + case PushLibraryAddress: + return 1; + case Tag: + return 0; + default:; + } + return 0; +} + +string AssemblyItem::getJumpTypeAsString() const +{ + switch (m_jumpType) + { + case JumpType::IntoFunction: + return "[in]"; + case JumpType::OutOfFunction: + return "[out]"; + case JumpType::Ordinary: + default: + return ""; + } +} + +ostream& dev::eth::operator<<(ostream& _out, AssemblyItem const& _item) +{ + switch (_item.type()) + { + case Operation: + _out << " " << instructionInfo(_item.instruction()).name; + if (_item.instruction() == eth::Instruction::JUMP || _item.instruction() == eth::Instruction::JUMPI) + _out << "\t" << _item.getJumpTypeAsString(); + break; + case Push: + _out << " PUSH " << hex << _item.data(); + break; + case PushString: + _out << " PushString" << hex << (unsigned)_item.data(); + break; + case PushTag: + _out << " PushTag " << _item.data(); + break; + case Tag: + _out << " Tag " << _item.data(); + break; + case PushData: + _out << " PushData " << hex << (unsigned)_item.data(); + break; + case PushSub: + _out << " PushSub " << hex << h256(_item.data()).abridgedMiddle(); + break; + case PushSubSize: + _out << " PushSubSize " << hex << h256(_item.data()).abridgedMiddle(); + break; + case PushProgramSize: + _out << " PushProgramSize"; + break; + case PushLibraryAddress: + _out << " PushLibraryAddress " << hex << h256(_item.data()).abridgedMiddle(); + break; + case UndefinedItem: + _out << " ???"; + break; + default: + BOOST_THROW_EXCEPTION(InvalidOpcode()); + } + return _out; +} |