63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
//===-- TestAArch64Emulator.cpp ------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "gtest/gtest.h"
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#include "lldb/Core/Address.h"
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#include "lldb/Core/Disassembler.h"
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#include "lldb/Target/ExecutionContext.h"
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#include "lldb/Utility/ArchSpec.h"
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#include "Plugins/Instruction/ARM64/EmulateInstructionARM64.h"
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using namespace lldb;
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using namespace lldb_private;
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struct Arch64EmulatorTester : public EmulateInstructionARM64 {
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Arch64EmulatorTester()
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: EmulateInstructionARM64(ArchSpec("arm64-apple-ios")) {}
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static uint64_t AddWithCarry(uint32_t N, uint64_t x, uint64_t y, bool carry_in,
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EmulateInstructionARM64::ProcState &proc_state) {
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return EmulateInstructionARM64::AddWithCarry(N, x, y, carry_in, proc_state);
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}
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};
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class TestAArch64Emulator : public testing::Test {
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public:
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static void SetUpTestCase();
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static void TearDownTestCase();
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protected:
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};
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void TestAArch64Emulator::SetUpTestCase() {
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EmulateInstructionARM64::Initialize();
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}
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void TestAArch64Emulator::TearDownTestCase() {
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EmulateInstructionARM64::Terminate();
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}
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TEST_F(TestAArch64Emulator, TestOverflow) {
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EmulateInstructionARM64::ProcState pstate;
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memset(&pstate, 0, sizeof(pstate));
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uint64_t ll_max = std::numeric_limits<int64_t>::max();
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Arch64EmulatorTester emu;
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ASSERT_EQ(emu.AddWithCarry(64, ll_max, 0, 0, pstate), ll_max);
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ASSERT_EQ(pstate.V, 0ULL);
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ASSERT_EQ(pstate.C, 0ULL);
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ASSERT_EQ(emu.AddWithCarry(64, ll_max, 1, 0, pstate), (uint64_t)(ll_max + 1));
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ASSERT_EQ(pstate.V, 1ULL);
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ASSERT_EQ(pstate.C, 0ULL);
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ASSERT_EQ(emu.AddWithCarry(64, ll_max, 0, 1, pstate), (uint64_t)(ll_max + 1));
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ASSERT_EQ(pstate.V, 1ULL);
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ASSERT_EQ(pstate.C, 0ULL);
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}
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