1 /*
2 * Copyright (C) 2023 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 <cstdint>
20
21 #include "berberis/assembler/machine_code.h"
22 #include "berberis/guest_state/guest_addr.h"
23 #include "berberis/runtime_primitives/runtime_library.h"
24 #include "berberis/test_utils/scoped_exec_region.h"
25
26 #include "lite_translator.h"
27 #include "register_maintainer.h"
28
29 namespace berberis {
30
31 namespace {
32 class Riscv64LiteTranslatorExecTest : public ::testing::Test {
33 public:
Riscv64LiteTranslatorExecTest()34 Riscv64LiteTranslatorExecTest()
35 : machine_code_(),
36 is_translated_(false),
37 state_{},
38 translator_(&machine_code_, kStartGuestAddr) {}
39
Run()40 void Run() {
41 if (!is_translated_) {
42 FinalizeTranslation();
43 }
44 ScopedExecRegion exec(&machine_code_);
45 berberis_RunGeneratedCode(&state_, exec.get());
46 }
47
48 private:
FinalizeTranslation()49 void FinalizeTranslation() {
50 is_translated_ = true;
51 translator_.as()->Finalize();
52 }
53
54 // machine_code_ should precede translator_ for the correct construction.
55 MachineCode machine_code_;
56 bool is_translated_;
57
58 protected:
59 // Upper 16-bits must be zero in a valid address.
60 constexpr static GuestAddr kStartGuestAddr = 0x0000aaaabbbbccccULL;
61 ThreadState state_;
62 LiteTranslator translator_;
63 };
64
TEST_F(Riscv64LiteTranslatorExecTest,StoreMappedRegs)65 TEST_F(Riscv64LiteTranslatorExecTest, StoreMappedRegs) {
66 state_.cpu.x[1] = 0;
67
68 translator_.as()->Movq(x86_64::Assembler::rax, 33);
69 translator_.SetReg(1, x86_64::Assembler::rax);
70 EXPECT_TRUE(translator_.gp_maintainer()->IsMapped(1));
71 EXPECT_TRUE(translator_.gp_maintainer()->IsModified(1));
72 translator_.StoreMappedRegs();
73 translator_.as()->Jmp(kEntryExitGeneratedCode);
74
75 Run();
76 EXPECT_EQ(state_.cpu.x[1], 33ULL);
77 }
78
TEST_F(Riscv64LiteTranslatorExecTest,StoreMappedFpRegs)79 TEST_F(Riscv64LiteTranslatorExecTest, StoreMappedFpRegs) {
80 state_.cpu.f[1] = 0;
81 LiteTranslator::FpRegister reg = translator_.AllocTempSimdReg();
82
83 translator_.as()->Movq(x86_64::Assembler::rax, 33);
84 translator_.as()->Movq(reg, x86_64::Assembler::rax);
85 translator_.NanBoxAndSetFpReg<LiteTranslator::Float64>(1, reg);
86 EXPECT_TRUE(translator_.simd_maintainer()->IsMapped(1));
87 EXPECT_TRUE(translator_.simd_maintainer()->IsModified(1));
88 translator_.StoreMappedRegs();
89 translator_.as()->Jmp(kEntryExitGeneratedCode);
90
91 Run();
92 EXPECT_EQ(state_.cpu.f[1], 33ULL);
93 }
94
95 } // namespace
96
97 } // namespace berberis