1 /* `Deep Thought', a softcore CPU implemented on a FPGA
3 Copyright (C) 2010 Markus Hofstaetter <markus.manrow@gmx.at>
4 Copyright (C) 2010 Martin Perner <e0725782@student.tuwien.ac.at>
5 Copyright (C) 2010 Stefan Rebernig <stefan.rebernig@gmail.com>
6 Copyright (C) 2010 Manfred Schwarz <e0725898@student.tuwien.ac.at>
7 Copyright (C) 2010 Bernhard Urban <lewurm@gmail.com>
9 This program is free software: you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation, either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include <boost/lexical_cast.hpp>
23 #include <boost/dynamic_bitset.hpp>
26 using namespace boost;
28 Iinstr* disasm::decode(std::string str)
30 /* we need 0x prefix */
34 CDat val = lexical_cast<uint32_from_hex>(hex);
35 return this->decodeNum(val);
39 Iinstr* disasm::decodeNum(CDat val)
41 dynamic_bitset<> bits(32,val), opcode(32,val), condition(9), args(32);
53 //cout << "<" << hex << "> is in int " << val << "\t is binary " << bits << " opcode?" << opcode << " condition " << condition << endl;
55 Iinstr* instr = decodeOpcode(opcode.to_ulong());
56 instr->decodeCondition(condition.to_ulong());
57 instr->loadBits(args);
61 catch(std::string &e) {
62 cerr << " Error: " << e << endl;
67 std::string disasm::decodeToString(std::string str)
69 return this->decode(str)->toString();
72 Iinstr* disasm::decodeOpcode(short opcode)
74 auto iter = instrs.find(opcode);
75 if(iter != instrs.end()) {
76 Iinstr* p = (iter->second)->getNew();
81 err << "opcode not found. in was " << opcode << endl;