1 //===- llvm/unittest/Object/Disassembler.cpp ------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "llvm-c/Disassembler.h" 11 #include "llvm/Support/TargetSelect.h" 12 #include "gtest/gtest.h" 13 14 using namespace llvm; 15 16 static const char *symbolLookupCallback(void *DisInfo, uint64_t ReferenceValue, 17 uint64_t *ReferenceType, 18 uint64_t ReferencePC, 19 const char **ReferenceName) { 20 *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None; 21 return nullptr; 22 } 23 24 TEST(Disassembler, Test1) { 25 llvm::InitializeAllTargetInfos(); 26 llvm::InitializeAllTargetMCs(); 27 llvm::InitializeAllDisassemblers(); 28 29 uint8_t Bytes[] = {0x90, 0x90, 0xeb, 0xfd}; 30 uint8_t *BytesP = Bytes; 31 const char OutStringSize = 100; 32 char OutString[OutStringSize]; 33 LLVMDisasmContextRef DCR = LLVMCreateDisasm("x86_64-pc-linux", nullptr, 0, 34 nullptr, symbolLookupCallback); 35 if (!DCR) 36 return; 37 38 size_t InstSize; 39 unsigned NumBytes = sizeof(Bytes); 40 unsigned PC = 0; 41 42 InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString, 43 OutStringSize); 44 EXPECT_EQ(InstSize, 1U); 45 EXPECT_EQ(StringRef(OutString), "\tnop"); 46 PC += InstSize; 47 BytesP += InstSize; 48 NumBytes -= InstSize; 49 50 InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString, 51 OutStringSize); 52 EXPECT_EQ(InstSize, 1U); 53 EXPECT_EQ(StringRef(OutString), "\tnop"); 54 PC += InstSize; 55 BytesP += InstSize; 56 NumBytes -= InstSize; 57 58 InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString, 59 OutStringSize); 60 EXPECT_EQ(InstSize, 2U); 61 EXPECT_EQ(StringRef(OutString), "\tjmp\t0x1"); 62 63 LLVMDisasmDispose(DCR); 64 } 65
