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[/] [s80186/] [trunk/] [tests/] [instructions/] [TestLoop.cpp] - Rev 2
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// Copyright Jamie Iles, 2017 // // This file is part of s80x86. // // s80x86 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. // // s80x86 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 s80x86. If not, see <http://www.gnu.org/licenses/>. #include <gtest/gtest.h> #include "EmulateFixture.h" #include "Flags.h" TEST_F(EmulateFixture, LoopNotTaken) { write_reg(CX, 1); write_reg(IP, 0x100); // loop ip-3 set_instruction({0xe2, 0xfd}); emulate(); ASSERT_EQ(0x102, read_reg(IP)); } TEST_F(EmulateFixture, LoopTaken) { write_reg(CX, 2); write_reg(IP, 0x100); // loop ip-3 set_instruction({0xe2, 0xfd}); emulate(); ASSERT_EQ(0x0ff, read_reg(IP)); } TEST_F(EmulateFixture, LoopeNotTakenNonZero) { write_reg(CX, 2); write_reg(IP, 0x100); write_flags(0); // loope ip-3 set_instruction({0xe1, 0xfd}); emulate(); ASSERT_EQ(0x102, read_reg(IP)); } TEST_F(EmulateFixture, LoopeNotTaken) { write_reg(CX, 1); write_reg(IP, 0x100); write_flags(ZF); // loope ip-3 set_instruction({0xe1, 0xfd}); emulate(); ASSERT_EQ(0x102, read_reg(IP)); } TEST_F(EmulateFixture, LoopeTaken) { write_reg(CX, 2); write_reg(IP, 0x100); write_flags(ZF); // loope ip-3 set_instruction({0xe1, 0xfd}); emulate(); ASSERT_EQ(0x0ff, read_reg(IP)); } TEST_F(EmulateFixture, LoopnzNotTakenNonZero) { write_reg(CX, 1); write_reg(IP, 0x100); write_flags(0); // loopnz ip-3 set_instruction({0xe0, 0xfd}); emulate(); ASSERT_EQ(0x102, read_reg(IP)); } TEST_F(EmulateFixture, LoopnzNotTaken) { write_reg(CX, 2); write_reg(IP, 0x100); write_flags(ZF); // loopnz ip-3 set_instruction({0xe0, 0xfd}); emulate(); ASSERT_EQ(0x102, read_reg(IP)); } TEST_F(EmulateFixture, LoopnzTaken) { write_reg(CX, 2); write_reg(IP, 0x100); write_flags(0); // loopnz ip-3 set_instruction({0xe0, 0xfd}); emulate(); ASSERT_EQ(0x0ff, read_reg(IP)); }