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[/] [s80186/] [trunk/] [tests/] [instructions/] [TestInt.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" // flags // cs // ip TEST_F(EmulateFixture, Int3) { write_mem16(VEC_INT + 2, 0x8000, CS); // CS write_mem16(VEC_INT + 0, 0x0100, CS); // IP // int 3 write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(CF | IF); set_instruction({0xcc}); emulate(); ASSERT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS | CF); ASSERT_EQ(read_reg(CS), 0x8000); ASSERT_EQ(read_reg(IP), 0x0100); ASSERT_EQ(read_reg(SP), 0x0100 - 6); ASSERT_EQ(read_mem16(0x100 - 2, SS), FLAGS_STUCK_BITS | CF | IF); ASSERT_EQ(read_mem16(0x100 - 4, SS), 0x7c00); // Return to the following instruction ASSERT_EQ(read_mem16(0x100 - 6, SS), 0x0002); } TEST_F(EmulateFixture, IntN) { write_mem16(VEC_INT + 2, 0x8000, CS); // CS write_mem16(VEC_INT + 0, 0x0100, CS); // IP // int 3 write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(CF | IF); set_instruction({0xcd, 0x03}); emulate(); EXPECT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS | CF); EXPECT_EQ(read_reg(CS), 0x8000); EXPECT_EQ(read_reg(IP), 0x0100); EXPECT_EQ(read_reg(SP), 0x0100 - 6); EXPECT_EQ(read_mem16(0x100 - 2, SS), FLAGS_STUCK_BITS | CF | IF); EXPECT_EQ(read_mem16(0x100 - 4, SS), 0x7c00); // Return to the following instruction EXPECT_EQ(read_mem16(0x100 - 6, SS), 0x0003); } TEST_F(EmulateFixture, IntoNotTaken) { // int 3 write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(CF | IF); set_instruction({0xce}); emulate(); ASSERT_EQ(read_reg(IP), 0x0002); ASSERT_EQ(read_reg(SP), 0x0100); } TEST_F(EmulateFixture, IntoTaken) { write_mem16(VEC_OVERFLOW + 2, 0x8000, CS); // CS write_mem16(VEC_OVERFLOW + 0, 0x0100, CS); // IP // int 3 write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(CF | IF | OF); set_instruction({0xce}); emulate(); ASSERT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS | CF | OF); ASSERT_EQ(read_reg(CS), 0x8000); ASSERT_EQ(read_reg(IP), 0x0100); ASSERT_EQ(read_reg(SP), 0x0100 - 6); ASSERT_EQ(read_mem16(0x100 - 2, SS), FLAGS_STUCK_BITS | CF | IF | OF); ASSERT_EQ(read_mem16(0x100 - 4, SS), 0x7c00); // Return to the following instruction ASSERT_EQ(read_mem16(0x100 - 6, SS), 0x0002); } TEST_F(EmulateFixture, NMITaken) { write_mem16(VEC_NMI + 2, 0x8000, CS); // CS write_mem16(VEC_NMI + 0, 0x0100, CS); // IP write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(IF); set_instruction({}); raise_nmi(); emulate(); EXPECT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS); EXPECT_EQ(read_reg(CS), 0x8000); EXPECT_EQ(read_reg(IP), 0x0100); EXPECT_EQ(read_reg(SP), 0x0100 - 6); EXPECT_EQ(read_mem16(0x100 - 2, SS), FLAGS_STUCK_BITS | IF); EXPECT_EQ(read_mem16(0x100 - 4, SS), 0x7c00); // Return to the instruction that would have been executed next EXPECT_EQ(read_mem16(0x100 - 6, SS), 0x0001); } TEST_F(EmulateFixture, IFClearExtIntNotTaken) { write_mem16((9 * 4) + 2, 0x8000, CS); // CS write_mem16((9 * 4) + 0, 0x0100, CS); // IP write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(0); set_instruction({0x90}); raise_irq(1); emulate(); EXPECT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS); EXPECT_EQ(read_reg(CS), 0x7c00); EXPECT_EQ(read_reg(IP), 0x0002); } TEST_F(EmulateFixture, IFSetExtIntTaken) { write_io8(0x20, 0x13); write_io8(0x21, 0x00); write_io8(0x21, 0x01); write_io8(0x21, 0x00); write_mem16((4 * 4) + 2, 0x8000, CS); // CS write_mem16((4 * 4) + 0, 0x0100, CS); // IP write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(IF); set_instruction({}); raise_irq(4); emulate(); EXPECT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS); EXPECT_EQ(read_reg(CS), 0x8000); EXPECT_EQ(read_reg(IP), 0x0100); EXPECT_EQ(read_reg(SP), 0x0100 - 6); EXPECT_EQ(read_mem16(0x100 - 2, SS), FLAGS_STUCK_BITS | IF); EXPECT_EQ(read_mem16(0x100 - 4, SS), 0x7c00); // Return to the instruction that would have been executed next EXPECT_EQ(read_mem16(0x100 - 6, SS), 0x0001); } TEST_F(EmulateFixture, IFClearNMITaken) { write_mem16(VEC_NMI + 2, 0x8000, CS); // CS write_mem16(VEC_NMI + 0, 0x0100, CS); // IP write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(0); set_instruction({}); raise_nmi(); emulate(); EXPECT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS); EXPECT_EQ(read_reg(CS), 0x8000); EXPECT_EQ(read_reg(IP), 0x0100); EXPECT_EQ(read_reg(SP), 0x0100 - 6); EXPECT_EQ(read_mem16(0x100 - 2, SS), FLAGS_STUCK_BITS); EXPECT_EQ(read_mem16(0x100 - 4, SS), 0x7c00); // Return to the instruction that would have been executed next EXPECT_EQ(read_mem16(0x100 - 6, SS), 0x0001); } TEST_F(EmulateFixture, STIInhibitsInterrupts) { write_mem16(VEC_NMI + 2, 0x8000, CS); // CS write_mem16(VEC_NMI + 0, 0x0100, CS); // IP write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(IF); set_instruction({0xfb}); emulate(); set_instruction({0x90}); raise_nmi(); emulate(); EXPECT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS); EXPECT_EQ(read_reg(CS), 0x8000); EXPECT_EQ(read_reg(IP), 0x0100); EXPECT_EQ(read_reg(SP), 0x0100 - 6); EXPECT_EQ(read_mem16(0x100 - 2, SS), FLAGS_STUCK_BITS | IF); EXPECT_EQ(read_mem16(0x100 - 4, SS), 0x7c00); // Return to the instruction that would have been executed next EXPECT_EQ(read_mem16(0x100 - 6, SS), 0x0003); } TEST_F(EmulateFixture, MovSRInhibitsInterrupts) { write_mem16(VEC_NMI + 2, 0x8000, CS); // CS write_mem16(VEC_NMI + 0, 0x0100, CS); // IP write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(IF); // mov es, ax set_instruction({0x8e, 0xc0}); emulate(); set_instruction({0x90}); raise_nmi(); emulate(); EXPECT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS); EXPECT_EQ(read_reg(CS), 0x8000); EXPECT_EQ(read_reg(IP), 0x0100); EXPECT_EQ(read_reg(SP), 0x0100 - 6); EXPECT_EQ(read_mem16(0x100 - 2, SS), FLAGS_STUCK_BITS | IF); EXPECT_EQ(read_mem16(0x100 - 4, SS), 0x7c00); // Return to the instruction that would have been executed next EXPECT_EQ(read_mem16(0x100 - 6, SS), 0x0004); } TEST_F(EmulateFixture, PopSRInhibitsInterrupts) { write_mem16(VEC_NMI + 2, 0x8000, CS); // CS write_mem16(VEC_NMI + 0, 0x0100, CS); // IP write_reg(SP, 0x0fe); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(IF); // pop es set_instruction({0x1f}); emulate(); set_instruction({0x90}); raise_nmi(); emulate(); EXPECT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS); EXPECT_EQ(read_reg(CS), 0x8000); EXPECT_EQ(read_reg(IP), 0x0100); EXPECT_EQ(read_reg(SP), 0x0100 - 6); EXPECT_EQ(read_mem16(0x100 - 2, SS), FLAGS_STUCK_BITS | IF); EXPECT_EQ(read_mem16(0x100 - 4, SS), 0x7c00); // Return to the instruction that would have been executed next EXPECT_EQ(read_mem16(0x100 - 6, SS), 0x0003); } TEST_F(EmulateFixture, SingleStepTaken) { write_mem16(VEC_SINGLE_STEP + 2, 0x8000, CS); // CS write_mem16(VEC_SINGLE_STEP + 0, 0x0100, CS); // IP write_reg(SP, 0x100); write_reg(CS, 0x7c00); write_reg(IP, 0x0001); write_flags(TF); set_instruction({0x90}); emulate(); EXPECT_PRED_FORMAT2(AssertFlagsEqual, read_flags(), FLAGS_STUCK_BITS); EXPECT_EQ(read_reg(CS), 0x8000); EXPECT_EQ(read_reg(IP), 0x0100); EXPECT_EQ(read_reg(SP), 0x0100 - 6); EXPECT_EQ(read_mem16(0x100 - 2, SS), FLAGS_STUCK_BITS | TF); EXPECT_EQ(read_mem16(0x100 - 4, SS), 0x7c00); // Return to the instruction that would have been executed next EXPECT_EQ(read_mem16(0x100 - 6, SS), 0x0002); }