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Diffstat (limited to 'llvm/tools/llvm-cfi-verify/FileAnalysis.h')
| -rw-r--r-- | llvm/tools/llvm-cfi-verify/FileAnalysis.h | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/llvm/tools/llvm-cfi-verify/FileAnalysis.h b/llvm/tools/llvm-cfi-verify/FileAnalysis.h deleted file mode 100644 index f33586145b0..00000000000 --- a/llvm/tools/llvm-cfi-verify/FileAnalysis.h +++ /dev/null @@ -1,157 +0,0 @@ -//===- FileAnalysis.h -------------------------------------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_CFI_VERIFY_FILE_ANALYSIS_H -#define LLVM_CFI_VERIFY_FILE_ANALYSIS_H - -#include "llvm/BinaryFormat/ELF.h" -#include "llvm/MC/MCAsmInfo.h" -#include "llvm/MC/MCContext.h" -#include "llvm/MC/MCDisassembler/MCDisassembler.h" -#include "llvm/MC/MCInst.h" -#include "llvm/MC/MCInstPrinter.h" -#include "llvm/MC/MCInstrAnalysis.h" -#include "llvm/MC/MCInstrDesc.h" -#include "llvm/MC/MCInstrInfo.h" -#include "llvm/MC/MCObjectFileInfo.h" -#include "llvm/MC/MCRegisterInfo.h" -#include "llvm/MC/MCSubtargetInfo.h" -#include "llvm/Object/Binary.h" -#include "llvm/Object/COFF.h" -#include "llvm/Object/ELFObjectFile.h" -#include "llvm/Object/ObjectFile.h" -#include "llvm/Support/Casting.h" -#include "llvm/Support/CommandLine.h" -#include "llvm/Support/Error.h" -#include "llvm/Support/MemoryBuffer.h" -#include "llvm/Support/TargetRegistry.h" -#include "llvm/Support/TargetSelect.h" -#include "llvm/Support/raw_ostream.h" - -#include <functional> -#include <set> -#include <string> -#include <unordered_map> - -namespace llvm { -namespace cfi_verify { - -// Disassembler and analysis tool for machine code files. Keeps track of non- -// sequential control flows, including indirect control flow instructions. -class FileAnalysis { -public: - // A metadata struct for an instruction. - struct Instr { - uint64_t VMAddress; // Virtual memory address of this instruction. - MCInst Instruction; // Instruction. - uint64_t InstructionSize; // Size of this instruction. - bool Valid; // Is this a valid instruction? If false, Instr::Instruction is - // undefined. - }; - - // Construct a FileAnalysis from a file path. - static Expected<FileAnalysis> Create(StringRef Filename); - - // Construct and take ownership of the supplied object. Do not use this - // constructor, prefer to use FileAnalysis::Create instead. - FileAnalysis(object::OwningBinary<object::Binary> Binary); - FileAnalysis() = delete; - FileAnalysis(const FileAnalysis &) = delete; - FileAnalysis(FileAnalysis &&Other) = default; - - // Returns the instruction at the provided address. Returns nullptr if there - // is no instruction at the provided address. - const Instr *getInstruction(uint64_t Address) const; - - // Returns the instruction at the provided adress, dying if the instruction is - // not found. - const Instr &getInstructionOrDie(uint64_t Address) const; - - // Returns a pointer to the previous/next instruction in sequence, - // respectively. Returns nullptr if the next/prev instruction doesn't exist, - // or if the provided instruction doesn't exist. - const Instr *getPrevInstructionSequential(const Instr &InstrMeta) const; - const Instr *getNextInstructionSequential(const Instr &InstrMeta) const; - - // Returns whether this instruction uses a register operand. - bool usesRegisterOperand(const Instr &InstrMeta) const; - - // Returns the list of indirect instructions. - const std::set<uint64_t> &getIndirectInstructions() const; - - const MCRegisterInfo *getRegisterInfo() const; - const MCInstrInfo *getMCInstrInfo() const; - const MCInstrAnalysis *getMCInstrAnalysis() const; - -protected: - // Construct a blank object with the provided triple and features. Used in - // testing, where a sub class will dependency inject protected methods to - // allow analysis of raw binary, without requiring a fully valid ELF file. - FileAnalysis(const Triple &ObjectTriple, const SubtargetFeatures &Features); - - // Add an instruction to this object. - void addInstruction(const Instr &Instruction); - - // Disassemble and parse the provided bytes into this object. Instruction - // address calculation is done relative to the provided SectionAddress. - void parseSectionContents(ArrayRef<uint8_t> SectionBytes, - uint64_t SectionAddress); - - // Constructs and initialises members required for disassembly. - Error initialiseDisassemblyMembers(); - - // Parses code sections from the internal object file. Saves them into the - // internal members. Should only be called once by Create(). - Error parseCodeSections(); - -private: - // Members that describe the input file. - object::OwningBinary<object::Binary> Binary; - const object::ObjectFile *Object = nullptr; - Triple ObjectTriple; - std::string ArchName; - std::string MCPU; - const Target *ObjectTarget = nullptr; - SubtargetFeatures Features; - - // Members required for disassembly. - std::unique_ptr<const MCRegisterInfo> RegisterInfo; - std::unique_ptr<const MCAsmInfo> AsmInfo; - std::unique_ptr<MCSubtargetInfo> SubtargetInfo; - std::unique_ptr<const MCInstrInfo> MII; - MCObjectFileInfo MOFI; - std::unique_ptr<MCContext> Context; - std::unique_ptr<const MCDisassembler> Disassembler; - std::unique_ptr<const MCInstrAnalysis> MIA; - std::unique_ptr<MCInstPrinter> Printer; - - // A mapping between the virtual memory address to the instruction metadata - // struct. - std::map<uint64_t, Instr> Instructions; - - // Contains a mapping between a specific address, and a list of instructions - // that use this address as a branch target (including call instructions). - std::unordered_map<uint64_t, std::vector<uint64_t>> StaticBranchTargetings; - - // A list of addresses of indirect control flow instructions. - std::set<uint64_t> IndirectInstructions; -}; - -class UnsupportedDisassembly : public ErrorInfo<UnsupportedDisassembly> { -public: - static char ID; - - void log(raw_ostream &OS) const override; - std::error_code convertToErrorCode() const override; -}; - -} // namespace cfi_verify -} // namespace llvm - -#endif // LLVM_CFI_VERIFY_FILE_ANALYSIS_H |

