1 /*
2 * Copyright (C) 2024 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "gtest/gtest.h"
18
19 #include <cstddef>
20 #include <cstring>
21
22 #include "berberis/guest_state/get_cpu_state_opaque.h"
23 #include "berberis/guest_state/guest_state_arch.h"
24 #include "native_bridge_support/guest_state_accessor/accessor.h"
25
26 namespace berberis {
27
28 namespace {
29
TEST(GetArm64CpuStateTest,TestValuesSet)30 TEST(GetArm64CpuStateTest, TestValuesSet) {
31 NativeBridgeGuestRegs guest_regs{.guest_arch = NATIVE_BRIDGE_ARCH_ARM64};
32 CPUState cpu_state;
33 for (size_t off = 0; off < sizeof(CPUState); off++) {
34 auto val = off % 199; // 199 is prime to avoid regularly repeating values in registers
35 memcpy(reinterpret_cast<char*>(&cpu_state) + off, &val, 1);
36 }
37
38 EXPECT_EQ(GetCpuState(&guest_regs, &cpu_state), 0);
39
40 for (std::size_t i = 0; i < 31; i++) {
41 EXPECT_EQ(guest_regs.regs_arm64.x[i], cpu_state.x[i]);
42 }
43 for (std::size_t i = 0; i < 32; i++) {
44 EXPECT_EQ(guest_regs.regs_arm64.v[i], cpu_state.v[i]);
45 }
46 EXPECT_EQ(guest_regs.regs_arm64.sp, cpu_state.sp);
47 EXPECT_EQ(guest_regs.regs_arm64.ip, cpu_state.insn_addr);
48 }
49
TEST(GetArm64CpuStateTest,TestErrorSize)50 TEST(GetArm64CpuStateTest, TestErrorSize) {
51 NativeBridgeGuestRegs guest_regs{.guest_arch = NATIVE_BRIDGE_ARCH_ARM64};
52 int res = LoadGuestStateRegisters(nullptr, sizeof(ThreadState) - 1, &guest_regs);
53 EXPECT_EQ(res, NATIVE_BRIDGE_GUEST_STATE_ACCESSOR_ERROR_INVALID_STATE);
54 }
55
TEST(GetArm64CpuStateTest,TestErrorArch)56 TEST(GetArm64CpuStateTest, TestErrorArch) {
57 NativeBridgeGuestRegs guest_regs{.guest_arch = NATIVE_BRIDGE_ARCH_RISCV64};
58 CPUState cpu_state;
59 int res = GetCpuState(&guest_regs, &cpu_state);
60 EXPECT_EQ(res, NATIVE_BRIDGE_GUEST_STATE_ACCESSOR_ERROR_UNSUPPORTED_ARCH);
61 }
62
63 } // namespace
64
65 } // namespace berberis