1//===-- TestMCDisasmInstanceRISCV.cpp -------------------------------------===//
2
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#include "llvm/Support/TargetSelect.h"
11#include "gtest/gtest.h"
12
13#include "lldb/Core/Address.h"
14#include "lldb/Core/Disassembler.h"
15#include "lldb/Target/ExecutionContext.h"
16#include "lldb/Utility/ArchSpec.h"
17
18#include "Plugins/Disassembler/LLVMC/DisassemblerLLVMC.h"
19
20using namespace lldb;
21using namespace lldb_private;
22
23namespace {
24class TestMCDisasmInstanceRISCV : public testing::Test {
25public:
26 static void SetUpTestCase();
27 static void TearDownTestCase();
28
29protected:
30};
31
32void TestMCDisasmInstanceRISCV::SetUpTestCase() {
33 llvm::InitializeAllTargets();
34 llvm::InitializeAllAsmPrinters();
35 llvm::InitializeAllTargetMCs();
36 llvm::InitializeAllDisassemblers();
37 DisassemblerLLVMC::Initialize();
38}
39
40void TestMCDisasmInstanceRISCV::TearDownTestCase() {
41 DisassemblerLLVMC::Terminate();
42}
43} // namespace
44
45TEST_F(TestMCDisasmInstanceRISCV, TestRISCV32Instruction) {
46 ArchSpec arch("riscv32-*-linux");
47
48 const unsigned num_of_instructions = 5;
49 uint8_t data[] = {
50 0xef, 0x00, 0x00, 0x00, // call -- jal x1, 0
51 0xe7, 0x00, 0x00, 0x00, // call -- jalr x1, x0, 0
52 0x6f, 0x00, 0x00, 0x00, // jump -- jal x0, 0
53 0x67, 0x00, 0x00, 0x00, // jump -- jalr x0, x0, 0
54 0x67, 0x80, 0x00, 0x00 // ret -- jalr x0, x1, 0
55 };
56
57 DisassemblerSP disass_sp;
58 Address start_addr(0x100);
59 disass_sp = Disassembler::DisassembleBytes(
60 arch, plugin_name: nullptr, flavor: nullptr, cpu: nullptr, features: nullptr, start: start_addr, bytes: &data, length: sizeof(data),
61 max_num_instructions: num_of_instructions, data_from_file: false);
62
63 // If we failed to get a disassembler, we can assume it is because
64 // the llvm we linked against was not built with the riscv target,
65 // and we should skip these tests without marking anything as failing.
66 if (!disass_sp)
67 return;
68
69 const InstructionList inst_list(disass_sp->GetInstructionList());
70 EXPECT_EQ(num_of_instructions, inst_list.GetSize());
71
72 InstructionSP inst_sp;
73 inst_sp = inst_list.GetInstructionAtIndex(idx: 0);
74 EXPECT_TRUE(inst_sp->IsCall());
75 EXPECT_TRUE(inst_sp->DoesBranch());
76
77 inst_sp = inst_list.GetInstructionAtIndex(idx: 1);
78 EXPECT_TRUE(inst_sp->IsCall());
79 EXPECT_TRUE(inst_sp->DoesBranch());
80
81 inst_sp = inst_list.GetInstructionAtIndex(idx: 2);
82 EXPECT_FALSE(inst_sp->IsCall());
83 EXPECT_TRUE(inst_sp->DoesBranch());
84
85 inst_sp = inst_list.GetInstructionAtIndex(idx: 3);
86 EXPECT_FALSE(inst_sp->IsCall());
87 EXPECT_TRUE(inst_sp->DoesBranch());
88
89 inst_sp = inst_list.GetInstructionAtIndex(idx: 4);
90 EXPECT_FALSE(inst_sp->IsCall());
91 EXPECT_TRUE(inst_sp->DoesBranch());
92}
93

source code of lldb/unittests/Disassembler/RISCV/TestMCDisasmInstanceRISCV.cpp