65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
//===- llvm/unittest/Object/Disassembler.cpp ------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm-c/Disassembler.h"
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#include "llvm/Support/TargetSelect.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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static const char *symbolLookupCallback(void *DisInfo, uint64_t ReferenceValue,
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uint64_t *ReferenceType,
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uint64_t ReferencePC,
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const char **ReferenceName) {
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*ReferenceType = LLVMDisassembler_ReferenceType_InOut_None;
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return nullptr;
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}
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TEST(Disassembler, Test1) {
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llvm::InitializeAllTargetInfos();
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llvm::InitializeAllTargetMCs();
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llvm::InitializeAllDisassemblers();
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uint8_t Bytes[] = {0x90, 0x90, 0xeb, 0xfd};
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uint8_t *BytesP = Bytes;
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const char OutStringSize = 100;
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char OutString[OutStringSize];
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LLVMDisasmContextRef DCR = LLVMCreateDisasm("x86_64-pc-linux", nullptr, 0,
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nullptr, symbolLookupCallback);
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if (!DCR)
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return;
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size_t InstSize;
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unsigned NumBytes = sizeof(Bytes);
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unsigned PC = 0;
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InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString,
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OutStringSize);
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EXPECT_EQ(InstSize, 1U);
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EXPECT_EQ(StringRef(OutString), "\tnop");
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PC += InstSize;
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BytesP += InstSize;
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NumBytes -= InstSize;
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InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString,
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OutStringSize);
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EXPECT_EQ(InstSize, 1U);
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EXPECT_EQ(StringRef(OutString), "\tnop");
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PC += InstSize;
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BytesP += InstSize;
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NumBytes -= InstSize;
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InstSize = LLVMDisasmInstruction(DCR, BytesP, NumBytes, PC, OutString,
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OutStringSize);
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EXPECT_EQ(InstSize, 2U);
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EXPECT_EQ(StringRef(OutString), "\tjmp\t0x1");
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LLVMDisasmDispose(DCR);
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}
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