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https://github.com/c64scene-ar/llvm-6502.git
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a41dce3c64
Currently only implemented for ELF. Patch by Amara Emerson. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166918 91177308-0d34-0410-b5e6-96231b3b80d8
208 lines
7.8 KiB
C++
208 lines
7.8 KiB
C++
//===- COFF.h - COFF object file implementation -----------------*- C++ -*-===//
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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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//
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// This file declares the COFFObjectFile class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_OBJECT_COFF_H
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#define LLVM_OBJECT_COFF_H
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#include "llvm/Object/ObjectFile.h"
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#include "llvm/Support/COFF.h"
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#include "llvm/Support/Endian.h"
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namespace llvm {
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template <typename T>
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class ArrayRef;
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namespace object {
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struct coff_file_header {
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support::ulittle16_t Machine;
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support::ulittle16_t NumberOfSections;
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support::ulittle32_t TimeDateStamp;
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support::ulittle32_t PointerToSymbolTable;
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support::ulittle32_t NumberOfSymbols;
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support::ulittle16_t SizeOfOptionalHeader;
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support::ulittle16_t Characteristics;
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};
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struct coff_symbol {
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struct StringTableOffset {
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support::ulittle32_t Zeroes;
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support::ulittle32_t Offset;
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};
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union {
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char ShortName[8];
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StringTableOffset Offset;
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} Name;
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support::ulittle32_t Value;
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support::little16_t SectionNumber;
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support::ulittle16_t Type;
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support::ulittle8_t StorageClass;
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support::ulittle8_t NumberOfAuxSymbols;
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uint8_t getBaseType() const {
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return Type & 0x0F;
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}
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uint8_t getComplexType() const {
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return (Type & 0xF0) >> 4;
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}
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};
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struct coff_section {
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char Name[8];
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support::ulittle32_t VirtualSize;
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support::ulittle32_t VirtualAddress;
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support::ulittle32_t SizeOfRawData;
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support::ulittle32_t PointerToRawData;
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support::ulittle32_t PointerToRelocations;
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support::ulittle32_t PointerToLinenumbers;
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support::ulittle16_t NumberOfRelocations;
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support::ulittle16_t NumberOfLinenumbers;
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support::ulittle32_t Characteristics;
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};
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struct coff_relocation {
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support::ulittle32_t VirtualAddress;
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support::ulittle32_t SymbolTableIndex;
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support::ulittle16_t Type;
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};
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struct coff_aux_section_definition {
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support::ulittle32_t Length;
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support::ulittle16_t NumberOfRelocations;
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support::ulittle16_t NumberOfLinenumbers;
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support::ulittle32_t CheckSum;
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support::ulittle16_t Number;
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support::ulittle8_t Selection;
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char Unused[3];
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};
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class COFFObjectFile : public ObjectFile {
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private:
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const coff_file_header *Header;
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const coff_section *SectionTable;
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const coff_symbol *SymbolTable;
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const char *StringTable;
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uint32_t StringTableSize;
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error_code getString(uint32_t offset, StringRef &Res) const;
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const coff_symbol *toSymb(DataRefImpl Symb) const;
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const coff_section *toSec(DataRefImpl Sec) const;
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const coff_relocation *toRel(DataRefImpl Rel) const;
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protected:
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virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
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virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
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virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
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virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
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virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
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virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
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virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
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virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
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virtual error_code getSymbolSection(DataRefImpl Symb,
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section_iterator &Res) const;
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virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
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virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
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virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
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virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
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virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
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virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
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virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
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virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
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virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
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virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
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virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
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virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
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virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
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virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
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bool &Res) const;
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virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
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bool &Result) const;
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virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
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virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
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virtual error_code getRelocationNext(DataRefImpl Rel,
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RelocationRef &Res) const;
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virtual error_code getRelocationAddress(DataRefImpl Rel,
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uint64_t &Res) const;
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virtual error_code getRelocationOffset(DataRefImpl Rel,
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uint64_t &Res) const;
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virtual error_code getRelocationSymbol(DataRefImpl Rel,
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SymbolRef &Res) const;
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virtual error_code getRelocationType(DataRefImpl Rel,
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uint64_t &Res) const;
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virtual error_code getRelocationTypeName(DataRefImpl Rel,
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SmallVectorImpl<char> &Result) const;
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virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
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int64_t &Res) const;
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virtual error_code getRelocationValueString(DataRefImpl Rel,
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SmallVectorImpl<char> &Result) const;
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virtual error_code getLibraryNext(DataRefImpl LibData,
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LibraryRef &Result) const;
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virtual error_code getLibraryPath(DataRefImpl LibData,
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StringRef &Result) const;
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public:
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COFFObjectFile(MemoryBuffer *Object, error_code &ec);
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virtual symbol_iterator begin_symbols() const;
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virtual symbol_iterator end_symbols() const;
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virtual symbol_iterator begin_dynamic_symbols() const;
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virtual symbol_iterator end_dynamic_symbols() const;
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virtual library_iterator begin_libraries_needed() const;
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virtual library_iterator end_libraries_needed() const;
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virtual section_iterator begin_sections() const;
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virtual section_iterator end_sections() const;
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const coff_section *getCOFFSection(section_iterator &It) const;
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const coff_symbol *getCOFFSymbol(symbol_iterator &It) const;
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const coff_relocation *getCOFFRelocation(relocation_iterator &It) const;
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virtual uint8_t getBytesInAddress() const;
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virtual StringRef getFileFormatName() const;
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virtual unsigned getArch() const;
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virtual StringRef getLoadName() const;
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error_code getHeader(const coff_file_header *&Res) const;
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error_code getSection(int32_t index, const coff_section *&Res) const;
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error_code getSymbol(uint32_t index, const coff_symbol *&Res) const;
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template <typename T>
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error_code getAuxSymbol(uint32_t index, const T *&Res) const {
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const coff_symbol *s;
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error_code ec = getSymbol(index, s);
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Res = reinterpret_cast<const T*>(s);
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return ec;
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}
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error_code getSymbolName(const coff_symbol *symbol, StringRef &Res) const;
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ArrayRef<uint8_t> getSymbolAuxData(const coff_symbol *symbol) const;
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error_code getSectionName(const coff_section *Sec, StringRef &Res) const;
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error_code getSectionContents(const coff_section *Sec,
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ArrayRef<uint8_t> &Res) const;
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static inline bool classof(const Binary *v) {
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return v->isCOFF();
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}
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};
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}
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}
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#endif
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