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(GetCpuStateTest,TestValuesSet)30 TEST(GetCpuStateTest, TestValuesSet) {
31 NativeBridgeGuestRegs guest_regs{.guest_arch = NATIVE_BRIDGE_ARCH_RISCV64};
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 < 32; i++) {
41 EXPECT_EQ(guest_regs.regs_riscv64.x[i], cpu_state.x[i]);
42 }
43 for (std::size_t i = 0; i < 32; i++) {
44 EXPECT_EQ(guest_regs.regs_riscv64.f[i], cpu_state.f[i]);
45 }
46 for (std::size_t i = 0; i < 32; i++) {
47 EXPECT_EQ(guest_regs.regs_riscv64.v[i], cpu_state.v[i]);
48 }
49 EXPECT_EQ(guest_regs.regs_riscv64.ip, cpu_state.insn_addr);
50 }
51
TEST(GetArm64CpuStateTest,TestErrorSize)52 TEST(GetArm64CpuStateTest, TestErrorSize) {
53 NativeBridgeGuestRegs guest_regs{.guest_arch = NATIVE_BRIDGE_ARCH_RISCV64};
54 int res = LoadGuestStateRegisters(nullptr, sizeof(ThreadState) - 1, &guest_regs);
55 EXPECT_EQ(res, NATIVE_BRIDGE_GUEST_STATE_ACCESSOR_ERROR_INVALID_STATE);
56 }
57
TEST(GetArm64CpuStateTest,TestErrorArch)58 TEST(GetArm64CpuStateTest, TestErrorArch) {
59 NativeBridgeGuestRegs guest_regs{.guest_arch = NATIVE_BRIDGE_ARCH_ARM64};
60 CPUState cpu_state;
61 int res = GetCpuState(&guest_regs, &cpu_state);
62 EXPECT_EQ(res, NATIVE_BRIDGE_GUEST_STATE_ACCESSOR_ERROR_UNSUPPORTED_ARCH);
63 }
64
65 } // namespace
66
67 } // namespace berberis