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  • Committer: Package Import Robot
  • Author(s): Sylvestre Ledru
  • Date: 2015-07-15 17:51:08 UTC
  • Revision ID: package-import@ubuntu.com-20150715175108-l8mynwovkx4zx697
Tags: upstream-3.7~+rc2
Import upstream version 3.7~+rc2

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unittests/MC/Disassembler.cpp
 
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//===- 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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}