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"
25 class Cldi : 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() {
45 Iinstr* Cldi::getNew()
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) {
66 void Cldi::evalInstr()
68 this->m_s = argbits[2];
69 this->m_hl = argbits[1];
72 dynamic_bitset<> immb = argbits;
74 this->m_imm = this->generate16ImmSign(immb.to_ulong());
77 m_rd = this->getRegister(argbits);
80 void Cldi::execInstr()
82 //cout << "should exec " << this->toString() << endl;
83 CDat val = this->m_cpu->getRegister(this->m_rd);
84 if(this->m_s == false) {
85 if(this->m_hl == false) {
91 this->m_cpu->setRegister(this->m_rd, val + this->m_imm);
94 this->m_cpu->setRegister(this->m_rd, this->m_imm);
98 std::string Cldi::toString()
101 op << this->getName();
106 op << this->getConditionFlag() << " r" << m_rd << ", " << m_imm;