Subversion Repositories s80186

// 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));

}