mirror of
https://github.com/c64scene-ar/llvm-6502.git
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629b96cb4f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202621 91177308-0d34-0410-b5e6-96231b3b80d8
453 lines
16 KiB
C++
453 lines
16 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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class ImportDirectoryEntryRef;
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class ExportDirectoryEntryRef;
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typedef content_iterator<ImportDirectoryEntryRef> import_directory_iterator;
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typedef content_iterator<ExportDirectoryEntryRef> export_directory_iterator;
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/// The DOS compatible header at the front of all PE/COFF executables.
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struct dos_header {
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support::ulittle16_t Magic;
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support::ulittle16_t UsedBytesInTheLastPage;
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support::ulittle16_t FileSizeInPages;
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support::ulittle16_t NumberOfRelocationItems;
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support::ulittle16_t HeaderSizeInParagraphs;
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support::ulittle16_t MinimumExtraParagraphs;
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support::ulittle16_t MaximumExtraParagraphs;
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support::ulittle16_t InitialRelativeSS;
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support::ulittle16_t InitialSP;
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support::ulittle16_t Checksum;
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support::ulittle16_t InitialIP;
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support::ulittle16_t InitialRelativeCS;
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support::ulittle16_t AddressOfRelocationTable;
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support::ulittle16_t OverlayNumber;
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support::ulittle16_t Reserved[4];
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support::ulittle16_t OEMid;
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support::ulittle16_t OEMinfo;
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support::ulittle16_t Reserved2[10];
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support::ulittle32_t AddressOfNewExeHeader;
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};
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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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bool isImportLibrary() const { return NumberOfSections == 0xffff; }
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};
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/// The 32-bit PE header that follows the COFF header.
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struct pe32_header {
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support::ulittle16_t Magic;
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uint8_t MajorLinkerVersion;
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uint8_t MinorLinkerVersion;
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support::ulittle32_t SizeOfCode;
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support::ulittle32_t SizeOfInitializedData;
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support::ulittle32_t SizeOfUninitializedData;
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support::ulittle32_t AddressOfEntryPoint;
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support::ulittle32_t BaseOfCode;
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support::ulittle32_t BaseOfData;
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support::ulittle32_t ImageBase;
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support::ulittle32_t SectionAlignment;
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support::ulittle32_t FileAlignment;
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support::ulittle16_t MajorOperatingSystemVersion;
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support::ulittle16_t MinorOperatingSystemVersion;
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support::ulittle16_t MajorImageVersion;
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support::ulittle16_t MinorImageVersion;
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support::ulittle16_t MajorSubsystemVersion;
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support::ulittle16_t MinorSubsystemVersion;
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support::ulittle32_t Win32VersionValue;
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support::ulittle32_t SizeOfImage;
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support::ulittle32_t SizeOfHeaders;
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support::ulittle32_t CheckSum;
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support::ulittle16_t Subsystem;
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support::ulittle16_t DLLCharacteristics;
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support::ulittle32_t SizeOfStackReserve;
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support::ulittle32_t SizeOfStackCommit;
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support::ulittle32_t SizeOfHeapReserve;
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support::ulittle32_t SizeOfHeapCommit;
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support::ulittle32_t LoaderFlags;
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support::ulittle32_t NumberOfRvaAndSize;
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};
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/// The 64-bit PE header that follows the COFF header.
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struct pe32plus_header {
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support::ulittle16_t Magic;
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uint8_t MajorLinkerVersion;
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uint8_t MinorLinkerVersion;
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support::ulittle32_t SizeOfCode;
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support::ulittle32_t SizeOfInitializedData;
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support::ulittle32_t SizeOfUninitializedData;
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support::ulittle32_t AddressOfEntryPoint;
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support::ulittle32_t BaseOfCode;
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support::ulittle64_t ImageBase;
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support::ulittle32_t SectionAlignment;
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support::ulittle32_t FileAlignment;
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support::ulittle16_t MajorOperatingSystemVersion;
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support::ulittle16_t MinorOperatingSystemVersion;
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support::ulittle16_t MajorImageVersion;
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support::ulittle16_t MinorImageVersion;
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support::ulittle16_t MajorSubsystemVersion;
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support::ulittle16_t MinorSubsystemVersion;
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support::ulittle32_t Win32VersionValue;
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support::ulittle32_t SizeOfImage;
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support::ulittle32_t SizeOfHeaders;
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support::ulittle32_t CheckSum;
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support::ulittle16_t Subsystem;
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support::ulittle16_t DLLCharacteristics;
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support::ulittle64_t SizeOfStackReserve;
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support::ulittle64_t SizeOfStackCommit;
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support::ulittle64_t SizeOfHeapReserve;
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support::ulittle64_t SizeOfHeapCommit;
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support::ulittle32_t LoaderFlags;
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support::ulittle32_t NumberOfRvaAndSize;
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};
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struct data_directory {
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support::ulittle32_t RelativeVirtualAddress;
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support::ulittle32_t Size;
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};
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struct import_directory_table_entry {
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support::ulittle32_t ImportLookupTableRVA;
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support::ulittle32_t TimeDateStamp;
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support::ulittle32_t ForwarderChain;
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support::ulittle32_t NameRVA;
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support::ulittle32_t ImportAddressTableRVA;
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};
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struct import_lookup_table_entry32 {
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support::ulittle32_t data;
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bool isOrdinal() const { return data & 0x80000000; }
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uint16_t getOrdinal() const {
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assert(isOrdinal() && "ILT entry is not an ordinal!");
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return data & 0xFFFF;
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}
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uint32_t getHintNameRVA() const {
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assert(!isOrdinal() && "ILT entry is not a Hint/Name RVA!");
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return data;
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}
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};
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struct export_directory_table_entry {
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support::ulittle32_t ExportFlags;
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support::ulittle32_t TimeDateStamp;
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support::ulittle16_t MajorVersion;
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support::ulittle16_t MinorVersion;
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support::ulittle32_t NameRVA;
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support::ulittle32_t OrdinalBase;
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support::ulittle32_t AddressTableEntries;
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support::ulittle32_t NumberOfNamePointers;
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support::ulittle32_t ExportAddressTableRVA;
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support::ulittle32_t NamePointerRVA;
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support::ulittle32_t OrdinalTableRVA;
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};
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union export_address_table_entry {
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support::ulittle32_t ExportRVA;
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support::ulittle32_t ForwarderRVA;
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};
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typedef support::ulittle32_t export_name_pointer_table_entry;
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typedef support::ulittle16_t export_ordinal_table_entry;
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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_weak_external {
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support::ulittle32_t TagIndex;
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support::ulittle32_t Characteristics;
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char Unused[10];
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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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struct coff_load_configuration32 {
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support::ulittle32_t Characteristics;
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support::ulittle32_t TimeDateStamp;
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support::ulittle16_t MajorVersion;
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support::ulittle16_t MinorVersion;
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support::ulittle32_t GlobalFlagsClear;
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support::ulittle32_t GlobalFlagsSet;
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support::ulittle32_t CriticalSectionDefaultTimeout;
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support::ulittle32_t DeCommitFreeBlockThreshold;
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support::ulittle32_t DeCommitTotalFreeThreshold;
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support::ulittle32_t LockPrefixTable;
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support::ulittle32_t MaximumAllocationSize;
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support::ulittle32_t VirtualMemoryThreshold;
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support::ulittle32_t ProcessAffinityMask;
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support::ulittle32_t ProcessHeapFlags;
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support::ulittle16_t CSDVersion;
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uint16_t Reserved;
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support::ulittle32_t EditList;
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support::ulittle32_t SecurityCookie;
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support::ulittle32_t SEHandlerTable;
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support::ulittle32_t SEHandlerCount;
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};
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struct coff_runtime_function_x64 {
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support::ulittle32_t BeginAddress;
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support::ulittle32_t EndAddress;
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support::ulittle32_t UnwindInformation;
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};
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class COFFObjectFile : public ObjectFile {
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private:
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friend class ImportDirectoryEntryRef;
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friend class ExportDirectoryEntryRef;
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const coff_file_header *COFFHeader;
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const pe32_header *PE32Header;
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const pe32plus_header *PE32PlusHeader;
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const data_directory *DataDirectory;
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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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const import_directory_table_entry *ImportDirectory;
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uint32_t NumberOfImportDirectory;
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const export_directory_table_entry *ExportDirectory;
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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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error_code initSymbolTablePtr();
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error_code initImportTablePtr();
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error_code initExportTablePtr();
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protected:
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void moveSymbolNext(DataRefImpl &Symb) const override;
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error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const override;
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error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const override;
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error_code getSymbolFileOffset(DataRefImpl Symb,
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uint64_t &Res) const override;
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error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const override;
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uint32_t getSymbolFlags(DataRefImpl Symb) const override;
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error_code getSymbolType(DataRefImpl Symb,
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SymbolRef::Type &Res) const override;
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error_code getSymbolSection(DataRefImpl Symb,
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section_iterator &Res) const override;
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error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const override;
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void moveSectionNext(DataRefImpl &Sec) const override;
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error_code getSectionName(DataRefImpl Sec, StringRef &Res) const override;
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error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const override;
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error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const override;
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error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const override;
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error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const override;
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error_code isSectionText(DataRefImpl Sec, bool &Res) const override;
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error_code isSectionData(DataRefImpl Sec, bool &Res) const override;
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error_code isSectionBSS(DataRefImpl Sec, bool &Res) const override;
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error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const override;
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error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const override;
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error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const override;
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error_code isSectionRequiredForExecution(DataRefImpl Sec,
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bool &Res) const override;
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error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
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bool &Result) const override;
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relocation_iterator section_rel_begin(DataRefImpl Sec) const override;
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relocation_iterator section_rel_end(DataRefImpl Sec) const override;
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void moveRelocationNext(DataRefImpl &Rel) const override;
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error_code getRelocationAddress(DataRefImpl Rel,
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uint64_t &Res) const override;
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error_code getRelocationOffset(DataRefImpl Rel, uint64_t &Res) const override;
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symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override;
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error_code getRelocationType(DataRefImpl Rel, uint64_t &Res) const override;
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error_code getRelocationTypeName(DataRefImpl Rel,
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SmallVectorImpl<char> &Result) const override;
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error_code getRelocationValueString(DataRefImpl Rel,
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SmallVectorImpl<char> &Result) const override;
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error_code getLibraryNext(DataRefImpl LibData,
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LibraryRef &Result) const override;
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error_code getLibraryPath(DataRefImpl LibData,
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StringRef &Result) const override;
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public:
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COFFObjectFile(MemoryBuffer *Object, error_code &EC, bool BufferOwned = true);
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basic_symbol_iterator symbol_begin_impl() const override;
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basic_symbol_iterator symbol_end_impl() const override;
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library_iterator needed_library_begin() const override;
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library_iterator needed_library_end() const override;
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section_iterator section_begin() const override;
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section_iterator section_end() const override;
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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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uint8_t getBytesInAddress() const override;
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StringRef getFileFormatName() const override;
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unsigned getArch() const override;
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StringRef getLoadName() const override;
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import_directory_iterator import_directory_begin() const;
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import_directory_iterator import_directory_end() const;
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export_directory_iterator export_directory_begin() const;
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export_directory_iterator export_directory_end() const;
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error_code getHeader(const coff_file_header *&Res) const;
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error_code getCOFFHeader(const coff_file_header *&Res) const;
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error_code getPE32Header(const pe32_header *&Res) const;
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error_code getPE32PlusHeader(const pe32plus_header *&Res) const;
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error_code getDataDirectory(uint32_t index, const data_directory *&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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error_code getVaPtr(uint64_t VA, uintptr_t &Res) const;
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error_code getRvaPtr(uint32_t Rva, uintptr_t &Res) const;
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error_code getHintName(uint32_t Rva, uint16_t &Hint, StringRef &Name) 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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// The iterator for the import directory table.
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class ImportDirectoryEntryRef {
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public:
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ImportDirectoryEntryRef() : OwningObject(0) {}
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ImportDirectoryEntryRef(const import_directory_table_entry *Table, uint32_t I,
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const COFFObjectFile *Owner)
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: ImportTable(Table), Index(I), OwningObject(Owner) {}
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bool operator==(const ImportDirectoryEntryRef &Other) const;
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void moveNext();
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error_code getName(StringRef &Result) const;
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error_code
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getImportTableEntry(const import_directory_table_entry *&Result) const;
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error_code
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getImportLookupEntry(const import_lookup_table_entry32 *&Result) const;
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private:
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const import_directory_table_entry *ImportTable;
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uint32_t Index;
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const COFFObjectFile *OwningObject;
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};
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// The iterator for the export directory table entry.
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class ExportDirectoryEntryRef {
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public:
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ExportDirectoryEntryRef() : OwningObject(0) {}
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ExportDirectoryEntryRef(const export_directory_table_entry *Table, uint32_t I,
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const COFFObjectFile *Owner)
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: ExportTable(Table), Index(I), OwningObject(Owner) {}
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bool operator==(const ExportDirectoryEntryRef &Other) const;
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void moveNext();
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error_code getDllName(StringRef &Result) const;
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error_code getOrdinalBase(uint32_t &Result) const;
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error_code getOrdinal(uint32_t &Result) const;
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error_code getExportRVA(uint32_t &Result) const;
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error_code getSymbolName(StringRef &Result) const;
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private:
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const export_directory_table_entry *ExportTable;
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uint32_t Index;
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const COFFObjectFile *OwningObject;
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};
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} // end namespace object
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} // end namespace llvm
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#endif
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