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 "../Iinstr.hpp"
24 class Cstackop : public Iinstr {
30 std::string toString();
35 * Name: create_instruction
36 * Purpose: if compiled as shared library, this functions creates the
39 * Returns: pointer to instruction object
41 extern "C" Iinstr* create_instruction() {
42 return new Cstackop();
45 Iinstr* Cstackop::getNew()
47 return new Cstackop();
50 * Name: destroy_instruction
51 * Purpose: if compiled as shared library, this functions destoys the
54 * Parameter: IInstruction - the instruction object to delete
56 extern "C" void destroy_instruction(Iinstr* p) {
60 Cstackop::Cstackop() : m_typ(0)
66 void Cstackop::evalInstr()
70 dynamic_bitset<> type = argbits;
72 this->m_typ = type.to_ulong();
88 cerr << "What have you done? 2 bits that have more than 4 values?!" << endl;
92 m_rd = this->getRegister(argbits);
95 void Cstackop::execInstr()
97 CDat sp = this->m_cpu->getStack();
101 this->m_cpu->setRegister(m_rd, this->m_cpu->getRAM(sp));
108 this->m_cpu->setRegister(m_rd, this->m_cpu->getRAM(sp));
112 this->m_cpu->setRAM(sp, this->m_cpu->getRegister(m_rd));
115 cerr << "What have you done? 2 bits that have more than 4 values?!" << endl;
118 this->m_cpu->setStack(sp);
121 std::string Cstackop::toString()
124 op << this->getName();
126 op << this->getConditionFlag();