move libevmasm

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;
+}