1 //===-- TestX86GetControlFlowKind.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 20 using namespace lldb; 21 using namespace lldb_private; 22 23 namespace { 24 class TestGetControlFlowKindx86 : public testing::Test { 25 public: 26 static void SetUpTestCase(); 27 static void TearDownTestCase(); 28 29 protected: 30 }; 31 32 void TestGetControlFlowKindx86::SetUpTestCase() { 33 llvm::InitializeAllTargets(); 34 llvm::InitializeAllAsmPrinters(); 35 llvm::InitializeAllTargetMCs(); 36 llvm::InitializeAllDisassemblers(); 37 DisassemblerLLVMC::Initialize(); 38 } 39 40 void TestGetControlFlowKindx86::TearDownTestCase() { 41 DisassemblerLLVMC::Terminate(); 42 } 43 } // namespace 44 45 TEST_F(TestGetControlFlowKindx86, TestX86_64Instruction) { 46 ArchSpec arch("x86_64-*-linux"); 47 48 const unsigned num_of_instructions = 29; 49 uint8_t data[] = { 50 0x55, // other -- pushq %rbp 51 0x48, 0x89, 0xe5, // other -- movq %rsp, %rbp 52 53 0xe8, 0xfc, 0xfe, 0xff, 0xff, // call -- callq 0x4004c0 54 0x41, 0xff, 0x14, 0xdc, // call -- callq *(%r12,%rbx,8) 55 0xff, 0x50, 0x18, // call -- callq *0x18(%rax) 56 0xe8, 0x48, 0x0d, 0x00, 0x00, // call -- callq 0x94fe0 57 58 0xc3, // return -- retq 59 60 0xeb, 0xd3, // jump -- jmp 0x92dab 61 0xe9, 0x22, 0xff, 0xff, 0xff, // jump -- jmp 0x933ae 62 0xff, 0xe0, // jump -- jmpq *%rax 63 0xf2, 0xff, 0x25, 0x75, 0xe7, 0x39, 0x00, // jump -- repne jmpq *0x39e775 64 65 0x73, 0xc2, // cond jump -- jae 0x9515c 66 0x74, 0x1f, // cond jump -- je 0x400626 67 0x75, 0xea, // cond jump -- jne 0x400610 68 0x76, 0x10, // cond jump -- jbe 0x94d10 69 0x77, 0x58, // cond jump -- ja 0x1208c8 70 0x7e, 0x67, // cond jump -- jle 0x92180 71 0x78, 0x0b, // cond jump -- js 0x92dc3 72 0x0f, 0x82, 0x17, 0x01, 0x00, 0x00, // cond jump -- jb 0x9c7b0 73 0x0f, 0x83, 0xa7, 0x00, 0x00, 0x00, // cond jump -- jae 0x895c8 74 0x0f, 0x84, 0x8c, 0x00, 0x00, 0x00, // cond jump -- je 0x941f0 75 0x0f, 0x85, 0x51, 0xff, 0xff, 0xff, // cond jump -- jne 0x8952c 76 0x0f, 0x86, 0xa3, 0x02, 0x00, 0x00, // cond jump -- jbe 0x9ae10 77 0x0f, 0x87, 0xff, 0x00, 0x00, 0x00, // cond jump -- ja 0x9ab60 78 0x0f, 0x8e, 0x7e, 0x00, 0x00, 0x00, // cond jump -- jle 0x92dd8 79 0x0f, 0x86, 0xdf, 0x00, 0x00, 0x00, // cond jump -- jbe 0x921b0 80 81 0x0f, 0x05, // far call -- syscall 82 83 0x0f, 0x07, // far return -- sysret 84 0xcf, // far return -- interrupt ret 85 }; 86 87 InstructionControlFlowKind result[] = { 88 eInstructionControlFlowKindOther, 89 eInstructionControlFlowKindOther, 90 91 eInstructionControlFlowKindCall, 92 eInstructionControlFlowKindCall, 93 eInstructionControlFlowKindCall, 94 eInstructionControlFlowKindCall, 95 96 eInstructionControlFlowKindReturn, 97 98 eInstructionControlFlowKindJump, 99 eInstructionControlFlowKindJump, 100 eInstructionControlFlowKindJump, 101 eInstructionControlFlowKindJump, 102 103 eInstructionControlFlowKindCondJump, 104 eInstructionControlFlowKindCondJump, 105 eInstructionControlFlowKindCondJump, 106 eInstructionControlFlowKindCondJump, 107 eInstructionControlFlowKindCondJump, 108 eInstructionControlFlowKindCondJump, 109 eInstructionControlFlowKindCondJump, 110 eInstructionControlFlowKindCondJump, 111 eInstructionControlFlowKindCondJump, 112 eInstructionControlFlowKindCondJump, 113 eInstructionControlFlowKindCondJump, 114 eInstructionControlFlowKindCondJump, 115 eInstructionControlFlowKindCondJump, 116 eInstructionControlFlowKindCondJump, 117 eInstructionControlFlowKindCondJump, 118 119 eInstructionControlFlowKindFarCall, 120 121 eInstructionControlFlowKindFarReturn, 122 eInstructionControlFlowKindFarReturn, 123 }; 124 125 DisassemblerSP disass_sp; 126 Address start_addr(0x100); 127 disass_sp = Disassembler::DisassembleBytes( 128 arch, nullptr, nullptr, nullptr, nullptr, start_addr, &data, sizeof(data), 129 num_of_instructions, false); 130 131 // If we failed to get a disassembler, we can assume it is because 132 // the llvm we linked against was not built with the i386 target, 133 // and we should skip these tests without marking anything as failing. 134 if (!disass_sp) 135 return; 136 137 const InstructionList inst_list(disass_sp->GetInstructionList()); 138 EXPECT_EQ(num_of_instructions, inst_list.GetSize()); 139 140 for (size_t i = 0; i < num_of_instructions; ++i) { 141 InstructionSP inst_sp; 142 inst_sp = inst_list.GetInstructionAtIndex(i); 143 ExecutionContext exe_ctx(nullptr, nullptr, nullptr); 144 InstructionControlFlowKind kind = inst_sp->GetControlFlowKind(&exe_ctx); 145 EXPECT_EQ(kind, result[i]); 146 147 // Also, test the DisassemblerLLVMC::MCDisasmInstance methods. 148 if (kind == eInstructionControlFlowKindReturn) { 149 EXPECT_FALSE(inst_sp->IsCall()); 150 } 151 152 if (kind == eInstructionControlFlowKindCall) { 153 EXPECT_TRUE(inst_sp->IsCall()); 154 } 155 156 if (kind == eInstructionControlFlowKindCall || 157 kind == eInstructionControlFlowKindJump || 158 kind == eInstructionControlFlowKindCondJump || 159 kind == eInstructionControlFlowKindReturn) { 160 EXPECT_TRUE(inst_sp->DoesBranch()); 161 } 162 } 163 } 164