WinCOFFObjectWriter.cpp revision da0bfcdaf95d95a66e306ef6d45f638939272d34
1b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//===-- llvm/MC/WinCOFFObjectWriter.cpp -------------------------*- C++ -*-===// 2b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// 3b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// The LLVM Compiler Infrastructure 4b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// 5b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// This file is distributed under the University of Illinois Open Source 6b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// License. See LICENSE.TXT for details. 7b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// 8b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//===----------------------------------------------------------------------===// 9b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// 10b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// This file contains an implementation of a Win32 COFF object file writer. 11b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// 12b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//===----------------------------------------------------------------------===// 13b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 14b162290e39afd49d4c7d342333b331bc96232720Chris Lattner#define DEBUG_TYPE "WinCOFFObjectWriter" 15801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 16b162290e39afd49d4c7d342333b331bc96232720Chris Lattner#include "llvm/MC/MCObjectWriter.h" 17801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/MC/MCSection.h" 18801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/MC/MCContext.h" 19801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/MC/MCSymbol.h" 20801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/MC/MCExpr.h" 21b162290e39afd49d4c7d342333b331bc96232720Chris Lattner#include "llvm/MC/MCValue.h" 22b162290e39afd49d4c7d342333b331bc96232720Chris Lattner#include "llvm/MC/MCAssembler.h" 23b162290e39afd49d4c7d342333b331bc96232720Chris Lattner#include "llvm/MC/MCAsmLayout.h" 24801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/MC/MCSectionCOFF.h" 25801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 26801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/ADT/DenseMap.h" 27801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/ADT/StringMap.h" 28801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/ADT/StringRef.h" 29801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 30801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/Support/COFF.h" 31801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/Support/Debug.h" 32801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include "llvm/Support/ErrorHandling.h" 33801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 34ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer#include "llvm/System/TimeValue.h" 35ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer 36da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer#include "../Target/X86/X86FixupKinds.h" 37da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer 38801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include <cstdio> 39801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 40b162290e39afd49d4c7d342333b331bc96232720Chris Lattnerusing namespace llvm; 41b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 42b162290e39afd49d4c7d342333b331bc96232720Chris Lattnernamespace { 43801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencertypedef llvm::SmallString<COFF::NameSize> name; 44801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 45801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerenum AuxiliaryType { 46801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ATFunctionDefinition, 47801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ATbfAndefSymbol, 48801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ATWeakExternal, 49801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ATFile, 50801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ATSectionDefinition 51801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 52801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 53801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstruct AuxSymbol { 54801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer AuxiliaryType AuxType; 55801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::Auxiliary Aux; 56801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 57801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 58801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass COFFSymbol { 59801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 60801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::symbol Data; 61801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 62801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef llvm::SmallVector<AuxSymbol, 1> AuxiliarySymbols; 63801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 64801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer name Name; 65801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Index; 66801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer AuxiliarySymbols Aux; 67801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *Other; 68801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 69801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSymbolData const *MCData; 70801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 71801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol(llvm::StringRef name, size_t index); 72801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t size() const; 73801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void set_name_offset(uint32_t Offset); 74801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 75801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 76801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// This class contains staging data for a COFF relocation entry. 77801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstruct COFFRelocation { 78801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::relocation Data; 79801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *Symb; 80801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 81801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFRelocation() : Symb(NULL) {} 82801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static size_t size() { return COFF::RelocationSize; } 83801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 84801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 85801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencertypedef std::vector<COFFRelocation> relocations; 86801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 87801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass COFFSection { 88801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 89801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::section Header; 90801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 91801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer std::string Name; 92801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Number; 93801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionData const *MCData; 94801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *Symb; 95801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer relocations Relocations; 96801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 97801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection(llvm::StringRef name, size_t Index); 98801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static size_t size(); 99801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 100801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 101801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// This class holds the COFF string table. 102801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass StringTable { 103801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef llvm::StringMap<size_t> map; 104801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer map Map; 105801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 106801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void update_length(); 107801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 108801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer std::vector<char> Data; 109801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 110801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer StringTable(); 111801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t size() const; 112801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t insert(llvm::StringRef String); 113801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 114801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 115801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass WinCOFFObjectWriter : public MCObjectWriter { 116801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 117801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 118801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef std::vector<COFFSymbol*> symbols; 119801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef std::vector<COFFSection*> sections; 120b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 121801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef StringMap<COFFSymbol *> name_symbol_map; 122801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef StringMap<COFFSection *> name_section_map; 123b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 124801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef DenseMap<MCSymbolData const *, COFFSymbol *> symbol_map; 125801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef DenseMap<MCSectionData const *, COFFSection *> section_map; 126b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 127801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Root level file contents. 128801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::header Header; 129801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sections Sections; 130801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer symbols Symbols; 131801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer StringTable Strings; 132b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 133801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Maps used during object file creation. 134801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer section_map SectionMap; 135801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer symbol_map SymbolMap; 136801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 137da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer WinCOFFObjectWriter(raw_ostream &OS, bool is64Bit); 138808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer ~WinCOFFObjectWriter(); 139801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 140801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *createSymbol(llvm::StringRef Name); 141801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *createSection(llvm::StringRef Name); 142801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 143801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void InitCOFFEntity(COFFSymbol &Symbol); 144801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void InitCOFFEntity(COFFSection &Section); 145801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 146801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer template <typename object_t, typename list_t> 147801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer object_t *createCOFFEntity(llvm::StringRef Name, list_t &List); 148801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 149801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void DefineSection(MCSectionData const &SectionData); 150801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void DefineSymbol(MCSymbolData const &SymbolData, MCAssembler &Assembler); 151801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 152801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer bool ExportSection(COFFSection *S); 153801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer bool ExportSymbol(MCSymbolData const &SymbolData, MCAssembler &Asm); 154801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 155801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Entity writing methods. 156801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 157801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteFileHeader(const COFF::header &Header); 158801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteSymbol(const COFFSymbol *S); 159801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteAuxiliarySymbols(const COFFSymbol::AuxiliarySymbols &S); 160801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteSectionHeader(const COFF::section &S); 161801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteRelocation(const COFF::relocation &R); 162801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 163801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // MCObjectWriter interface implementation. 164801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 165801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void ExecutePostLayoutBinding(MCAssembler &Asm); 166801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 167801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void RecordRelocation(const MCAssembler &Asm, 168801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCAsmLayout &Layout, 169801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCFragment *Fragment, 170801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCFixup &Fixup, 171801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCValue Target, 172801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint64_t &FixedValue); 173801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 174801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteObject(const MCAssembler &Asm, const MCAsmLayout &Layout); 175801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 176801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 177801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 178801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint32_le(void *Data, uint32_t const &Value) { 179801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 180801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0x000000FF) >> 0; 181801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[1] = (Value & 0x0000FF00) >> 8; 182801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[2] = (Value & 0x00FF0000) >> 16; 183801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[3] = (Value & 0xFF000000) >> 24; 184801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 185801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 186801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint16_le(void *Data, uint16_t const &Value) { 187801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 188801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0x00FF) >> 0; 189801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[1] = (Value & 0xFF00) >> 8; 190801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 191801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 192801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint8_le(void *Data, uint8_t const &Value) { 193801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 194801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0xFF) >> 0; 195801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 196801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 197801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 198801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// Symbol class implementation 199801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 200801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSymbol::COFFSymbol(llvm::StringRef name, size_t index) 201801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer : Name(name.begin(), name.end()), Index(-1) 202801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer , Other(NULL), MCData(NULL) { 203801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Data, 0, sizeof(Data)); 204801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 205b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 206801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t COFFSymbol::size() const { 207801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return COFF::SymbolSize + (Data.NumberOfAuxSymbols * COFF::SymbolSize); 208b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 209b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 210801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// In the case that the name does not fit within 8 bytes, the offset 211801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// into the string table is stored in the last 4 bytes instead, leaving 212801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// the first 4 bytes as 0. 213801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid COFFSymbol::set_name_offset(uint32_t Offset) { 214801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(Data.Name + 0, 0); 215801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(Data.Name + 4, Offset); 216801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 217801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 218801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 219801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// Section class implementation 220801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 221801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSection::COFFSection(llvm::StringRef name, size_t Index) 222801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer : Name(name), Number(Index + 1) 223801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer , MCData(NULL), Symb(NULL) { 224801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Header, 0, sizeof(Header)); 225801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 226801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 227801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t COFFSection::size() { 228801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return COFF::SectionSize; 229801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 230801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 231801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 232801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// StringTable class implementation 233801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 234801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// Write the length of the string table into Data. 235801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// The length of the string table includes uint32 length header. 236801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid StringTable::update_length() { 237801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(&Data.front(), Data.size()); 238801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 239801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 240801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerStringTable::StringTable() { 241801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // The string table data begins with the length of the entire string table 242801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // including the length header. Allocate space for this header. 243801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.resize(4); 244801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 245801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 246801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t StringTable::size() const { 247801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Data.size(); 248801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 249801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 250801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// Add String to the table iff it is not already there. 251801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// @returns the index into the string table where the string is now located. 252801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t StringTable::insert(llvm::StringRef String) { 253801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer map::iterator i = Map.find(String); 254801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 255801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (i != Map.end()) 256801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return i->second; 257801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 258801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Offset = Data.size(); 259801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 260801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Insert string data into string table. 261801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.insert(Data.end(), String.begin(), String.end()); 262801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.push_back('\0'); 263801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 264801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Put a reference to it in the map. 265801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Map[String] = Offset; 266801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 267801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update the internal length field. 268801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer update_length(); 269801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 270801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Offset; 271801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 272801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 273801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 274801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// WinCOFFObjectWriter class implementation 275801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 276da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. SpencerWinCOFFObjectWriter::WinCOFFObjectWriter(raw_ostream &OS, bool is64Bit) 277b162290e39afd49d4c7d342333b331bc96232720Chris Lattner : MCObjectWriter(OS, true) { 278801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Header, 0, sizeof(Header)); 279da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer 280da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer is64Bit ? Header.Machine = COFF::IMAGE_FILE_MACHINE_AMD64 281da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer : Header.Machine = COFF::IMAGE_FILE_MACHINE_I386; 282801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 283801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 284808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin KramerWinCOFFObjectWriter::~WinCOFFObjectWriter() { 285808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer for (symbols::iterator I = Symbols.begin(), E = Symbols.end(); I != E; ++I) 286808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer delete *I; 287808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer for (sections::iterator I = Sections.begin(), E = Sections.end(); I != E; ++I) 288808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer delete *I; 289808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer} 290808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer 291801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSymbol *WinCOFFObjectWriter::createSymbol(llvm::StringRef Name) { 292801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return createCOFFEntity<COFFSymbol>(Name, Symbols); 293801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 294801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 295801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSection *WinCOFFObjectWriter::createSection(llvm::StringRef Name) { 296801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return createCOFFEntity<COFFSection>(Name, Sections); 297801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 298801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 299801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function initializes a symbol by entering its name into the string 300801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// table if it is too long to fit in the symbol table header. 301801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::InitCOFFEntity(COFFSymbol &S) { 302801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (S.Name.size() > COFF::NameSize) { 303801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t StringTableEntry = Strings.insert(S.Name.c_str()); 304801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 305801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer S.set_name_offset(StringTableEntry); 306801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } else 307801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memcpy(S.Data.Name, S.Name.c_str(), S.Name.size()); 308801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 309801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 310801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function initializes a section by entering its name into the string 311801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// table if it is too long to fit in the section table header. 312801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::InitCOFFEntity(COFFSection &S) { 313801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (S.Name.size() > COFF::NameSize) { 314801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t StringTableEntry = Strings.insert(S.Name.c_str()); 315801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 316801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: Why is this number 999999? This number is never mentioned in the 317801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // spec. I'm assuming this is due to the printed value needing to fit into 318801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // the S.Header.Name field. In which case why not 9999999 (7 9's instead of 319801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // 6)? The spec does not state if this entry should be null terminated in 320801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // this case, and thus this seems to be the best way to do it. I think I 321801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // just solved my own FIXME... 322801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (StringTableEntry > 999999) 323801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer report_fatal_error("COFF string table is greater than 999999 bytes."); 324801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 325fd2878c8d0e876e849f795bb3f5d5e2f82aa59bdDouglas Gregor sprintf(S.Header.Name, "/%d", (unsigned)StringTableEntry); 326801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } else 327801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memcpy(S.Header.Name, S.Name.c_str(), S.Name.size()); 328801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 329801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 330801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// A template used to lookup or create a symbol/section, and initialize it if 331801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// needed. 332801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencertemplate <typename object_t, typename list_t> 333801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerobject_t *WinCOFFObjectWriter::createCOFFEntity(llvm::StringRef Name, 334801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer list_t &List) { 335801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer object_t *Object = new object_t(Name, List.size()); 336801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 337801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer InitCOFFEntity(*Object); 338801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 339801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer List.push_back(Object); 340801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 341801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Object; 342801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 343801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 344801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function takes a section data object from the assembler 345801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// and creates the associated COFF section staging object. 346801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::DefineSection(MCSectionData const &SectionData) { 347801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: Not sure how to verify this (at least in a debug build). 348801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionCOFF const &Sec = 349801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static_cast<MCSectionCOFF const &>(SectionData.getSection()); 350801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 351801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *coff_section = createSection(Sec.getSectionName()); 352801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = createSymbol(Sec.getSectionName()); 353801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 354801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Symb = coff_symbol; 355801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_STATIC; 356801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.SectionNumber = coff_section->Number; 357801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 358801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // In this case the auxiliary symbol is a Section Definition. 359801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux.resize(1); 360801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&coff_symbol->Aux[0], 0, sizeof(coff_symbol->Aux[0])); 361801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].AuxType = ATSectionDefinition; 362801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.SectionDefinition.Number = coff_section->Number; 363801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.SectionDefinition.Selection = Sec.getSelection(); 364801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 365801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Header.Characteristics = Sec.getCharacteristics(); 366801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 367801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint32_t &Characteristics = coff_section->Header.Characteristics; 368801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch (SectionData.getAlignment()) { 369801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 1: Characteristics |= COFF::IMAGE_SCN_ALIGN_1BYTES; break; 370801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 2: Characteristics |= COFF::IMAGE_SCN_ALIGN_2BYTES; break; 371801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 4: Characteristics |= COFF::IMAGE_SCN_ALIGN_4BYTES; break; 372801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 8: Characteristics |= COFF::IMAGE_SCN_ALIGN_8BYTES; break; 373801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 16: Characteristics |= COFF::IMAGE_SCN_ALIGN_16BYTES; break; 374801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 32: Characteristics |= COFF::IMAGE_SCN_ALIGN_32BYTES; break; 375801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 64: Characteristics |= COFF::IMAGE_SCN_ALIGN_64BYTES; break; 376801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 128: Characteristics |= COFF::IMAGE_SCN_ALIGN_128BYTES; break; 377801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 256: Characteristics |= COFF::IMAGE_SCN_ALIGN_256BYTES; break; 378801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 512: Characteristics |= COFF::IMAGE_SCN_ALIGN_512BYTES; break; 379801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 1024: Characteristics |= COFF::IMAGE_SCN_ALIGN_1024BYTES; break; 380801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 2048: Characteristics |= COFF::IMAGE_SCN_ALIGN_2048BYTES; break; 381801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 4096: Characteristics |= COFF::IMAGE_SCN_ALIGN_4096BYTES; break; 382801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 8192: Characteristics |= COFF::IMAGE_SCN_ALIGN_8192BYTES; break; 383801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer default: 384801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer llvm_unreachable("unsupported section alignment"); 385801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 386801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 387801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Bind internal COFF section to MC section. 388801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->MCData = &SectionData; 389801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer SectionMap[&SectionData] = coff_section; 390801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 391801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 392801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function takes a section data object from the assembler 393801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// and creates the associated COFF symbol staging object. 394801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::DefineSymbol(MCSymbolData const &SymbolData, 395801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler &Assembler) { 396801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = createSymbol(SymbolData.getSymbol().getName()); 397801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 398801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.Type = (SymbolData.getFlags() & 0x0000FFFF) >> 0; 399801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = (SymbolData.getFlags() & 0x00FF0000) >> 16; 400801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 401801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // If no storage class was specified in the streamer, define it here. 402801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (coff_symbol->Data.StorageClass == 0) { 403801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer bool external = SymbolData.isExternal() || (SymbolData.Fragment == NULL); 404801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 405801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = 406801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer external ? COFF::IMAGE_SYM_CLASS_EXTERNAL : COFF::IMAGE_SYM_CLASS_STATIC; 407801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 408801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 409801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (SymbolData.getFlags() & COFF::SF_WeakReference) { 410801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL; 411801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 412801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCExpr *Value = SymbolData.getSymbol().getVariableValue(); 413801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 414801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: This assert message isn't very good. 415801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Value->getKind() == MCExpr::SymbolRef && 416801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Value must be a SymbolRef!"); 417801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 418801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCSymbolRefExpr *SymbolRef = 419801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static_cast<const MCSymbolRefExpr *>(Value); 420801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 421801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCSymbolData &OtherSymbolData = 422801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Assembler.getSymbolData(SymbolRef->getSymbol()); 423801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 424801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: This assert message isn't very good. 425801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(SymbolMap.find(&OtherSymbolData) != SymbolMap.end() && 426801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "OtherSymbolData must be in the symbol map!"); 427801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 428801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Other = SymbolMap[&OtherSymbolData]; 429801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 430801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Setup the Weak External auxiliary symbol. 431801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux.resize(1); 432801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&coff_symbol->Aux[0], 0, sizeof(coff_symbol->Aux[0])); 433801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].AuxType = ATWeakExternal; 434801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.TagIndex = 0; 435801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.Characteristics = 436801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY; 437801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 438801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 439801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Bind internal COFF symbol to MC symbol. 440801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->MCData = &SymbolData; 441801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer SymbolMap[&SymbolData] = coff_symbol; 442801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 443801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 444801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerbool WinCOFFObjectWriter::ExportSection(COFFSection *S) { 445801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return (S->Header.Characteristics 446801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) == 0; 447801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 448801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 449801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerbool WinCOFFObjectWriter::ExportSymbol(MCSymbolData const &SymbolData, 450801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler &Asm) { 451801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // This doesn't seem to be right. Strings referred to from the .data section 452801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // need symbols so they can be linked to code in the .text section right? 453801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 454801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // return Asm.isSymbolLinkerVisible (&SymbolData); 455801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 456801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // For now, all symbols are exported, the linker will sort it out for us. 457801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return true; 458801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 459801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 460801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 461801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// entity writing methods 462801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 463801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteFileHeader(const COFF::header &Header) { 464801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.Machine); 465801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.NumberOfSections); 466801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.TimeDateStamp); 467801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.PointerToSymbolTable); 468801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.NumberOfSymbols); 469801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.SizeOfOptionalHeader); 470801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.Characteristics); 471801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 472801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 473801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteSymbol(const COFFSymbol *S) { 474801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(S->Data.Name, COFF::NameSize)); 475801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S->Data.Value); 476801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S->Data.SectionNumber); 477801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S->Data.Type); 478801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(S->Data.StorageClass); 479801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(S->Data.NumberOfAuxSymbols); 480801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteAuxiliarySymbols(S->Aux); 481801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 482801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 483801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteAuxiliarySymbols( 484801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const COFFSymbol::AuxiliarySymbols &S) { 485801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for(COFFSymbol::AuxiliarySymbols::const_iterator i = S.begin(), e = S.end(); 486801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer i != e; ++i) { 487801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch(i->AuxType) { 488801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATFunctionDefinition: 489801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.TagIndex); 490801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.TotalSize); 491801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.PointerToLinenumber); 492801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.PointerToNextFunction); 493801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.FunctionDefinition.unused)); 494801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 495801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATbfAndefSymbol: 496801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused1)); 497801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.bfAndefSymbol.Linenumber); 498801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused2)); 499801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.bfAndefSymbol.PointerToNextFunction); 500801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused3)); 501801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 502801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATWeakExternal: 503801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.WeakExternal.TagIndex); 504801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.WeakExternal.Characteristics); 505801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.WeakExternal.unused)); 506801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 507801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATFile: 508801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(reinterpret_cast<const char *>(i->Aux.File.FileName), 509801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sizeof(i->Aux.File.FileName))); 510801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 511801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATSectionDefinition: 512801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.SectionDefinition.Length); 513801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.NumberOfRelocations); 514801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.NumberOfLinenumbers); 515801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.SectionDefinition.CheckSum); 516801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.Number); 517801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(i->Aux.SectionDefinition.Selection); 518801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.SectionDefinition.unused)); 519801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 520801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 521801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 522801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 523801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 524801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteSectionHeader(const COFF::section &S) { 525801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(S.Name, COFF::NameSize)); 526801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 527801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.VirtualSize); 528801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.VirtualAddress); 529801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.SizeOfRawData); 530801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToRawData); 531801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToRelocations); 532801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToLineNumbers); 533801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S.NumberOfRelocations); 534801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S.NumberOfLineNumbers); 535801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.Characteristics); 536801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 537801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 538801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteRelocation(const COFF::relocation &R) { 539801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(R.VirtualAddress); 540801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(R.SymbolTableIndex); 541801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(R.Type); 542b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 543b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 544b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//////////////////////////////////////////////////////////////////////////////// 545b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// MCObjectWriter interface implementations 546b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 547b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::ExecutePostLayoutBinding(MCAssembler &Asm) { 548801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // "Define" each section & symbol. This creates section & symbol 549801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // entries in the staging area and gives them their final indexes. 550801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 551801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_iterator i = Asm.begin(), e = Asm.end(); i != e; i++) 552801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer DefineSection(*i); 553801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 554801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_symbol_iterator i = Asm.symbol_begin(), 555801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer e = Asm.symbol_end(); i != e; i++) { 556801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (ExportSymbol(*i, Asm)) 557801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer DefineSymbol(*i, Asm); 558801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 559b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 560b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 561b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::RecordRelocation(const MCAssembler &Asm, 562b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCAsmLayout &Layout, 563b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCFragment *Fragment, 564b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCFixup &Fixup, 565b162290e39afd49d4c7d342333b331bc96232720Chris Lattner MCValue Target, 566b162290e39afd49d4c7d342333b331bc96232720Chris Lattner uint64_t &FixedValue) { 567801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Target.getSymA() != NULL && "Relocation must reference a symbol!"); 568801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Target.getSymB() == NULL && 569801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Relocation must reference only one symbol!"); 570801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 571801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionData const *SectionData = Fragment->getParent(); 572801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSymbolData const *SymbolData = 573801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer &Asm.getSymbolData(Target.getSymA()->getSymbol()); 574801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 575801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(SectionMap.find(SectionData) != SectionMap.end() && 576801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section must already have been defined in ExecutePostLayoutBinding!"); 577801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(SymbolMap.find(SymbolData) != SymbolMap.end() && 578801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol must already have been defined in ExecutePostLayoutBinding!"); 579801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 580801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *coff_section = SectionMap[SectionData]; 581801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = SymbolMap[SymbolData]; 582801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 583801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer FixedValue = Target.getConstant(); 584801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 585801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFRelocation Reloc; 586801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 587425f634917542d7f09c189e2eb130752c6a12d2cDaniel Dunbar Reloc.Data.SymbolTableIndex = 0; 588801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.VirtualAddress = Layout.getFragmentOffset(Fragment); 589801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Symb = coff_symbol; 590801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 591801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.VirtualAddress += Fixup.getOffset(); 592801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 593da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer COFF::RelocationTypeX86 Type; 594da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer 595da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer if (Header.Machine == COFF::IMAGE_FILE_MACHINE_I386) { 596da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer switch (Fixup.getKind()) { 597da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer case X86::reloc_pcrel_4byte: 598da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer Type = COFF::IMAGE_REL_I386_REL32; 599da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer FixedValue += 4; 600da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer break; 601da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer case FK_Data_4: 602da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer Type = COFF::IMAGE_REL_I386_DIR32; 603da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer break; 604da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer default: 605da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer llvm_unreachable("unsupported relocation type"); 606da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer } 607da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer } else if (Header.Machine == COFF::IMAGE_FILE_MACHINE_AMD64) { 608da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer switch (Fixup.getKind()) { 609da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer case FK_Data_8: 610da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer Type = COFF::IMAGE_REL_AMD64_ADDR64; 611da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer break; 612da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer case X86::reloc_pcrel_4byte: 613da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer case X86::reloc_riprel_4byte: 614da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer Type = COFF::IMAGE_REL_AMD64_REL32; 615da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer FixedValue += 4; 616da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer break; 617da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer case FK_Data_4: 618da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer Type = COFF::IMAGE_REL_AMD64_ADDR32; 619da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer break; 620da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer default: 621da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer llvm_unreachable("unsupported relocation type"); 622da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer } 623da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer } else 624da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer llvm_unreachable("unknown target architecture"); 625da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer 626da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer Reloc.Data.Type = Type; 627801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 628801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Relocations.push_back(Reloc); 629b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 630b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 631b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::WriteObject(const MCAssembler &Asm, 632b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCAsmLayout &Layout) { 633801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Assign symbol and section indexes and offsets. 634801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 635801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.NumberOfSymbols = 0; 636801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 637801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) { 638801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = *i; 639801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSymbolData const *SymbolData = coff_symbol->MCData; 640801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 641801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Index = Header.NumberOfSymbols++; 642801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 643801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update section number & offset for symbols that have them. 644801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((SymbolData != NULL) && (SymbolData->Fragment != NULL)) { 645801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *coff_section = SectionMap[SymbolData->Fragment->getParent()]; 646801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 647801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.SectionNumber = coff_section->Number; 648237f8fe5df628065874b8590b364d04dfc2686fdMichael J. Spencer coff_symbol->Data.Value = Layout.getFragmentOffset(SymbolData->Fragment) 649237f8fe5df628065874b8590b364d04dfc2686fdMichael J. Spencer + SymbolData->Offset; 650801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 651801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 652801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update auxiliary symbol info. 653801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.NumberOfAuxSymbols = coff_symbol->Aux.size(); 654801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.NumberOfSymbols += coff_symbol->Data.NumberOfAuxSymbols; 655801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 656801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 657801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Fixup weak external references. 658801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) { 659801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *symb = *i; 660801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 661801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (symb->Other != NULL) { 662801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(symb->Aux.size() == 1 && 663801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol must contain one aux symbol!"); 664801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(symb->Aux[0].AuxType == ATWeakExternal && 665801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol's aux symbol must be a Weak External!"); 666801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer symb->Aux[0].Aux.WeakExternal.TagIndex = symb->Other->Index; 667801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 668801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 669801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 670801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Assign file offsets to COFF object file structures. 671801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 672801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer unsigned offset = 0; 673801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 674801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::HeaderSize; 675801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::SectionSize * Asm.size(); 676801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 677801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.NumberOfSections = Sections.size(); 678801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 679801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_iterator i = Asm.begin(), 680801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer e = Asm.end(); 681801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer i != e; i++) { 682801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *Sec = SectionMap[i]; 683801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 684801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.SizeOfRawData = Layout.getSectionFileSize(i); 685801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 686801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (ExportSection(Sec)) { 687801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.PointerToRawData = offset; 688801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 689801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += Sec->Header.SizeOfRawData; 690801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 691801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 692801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (Sec->Relocations.size() > 0) { 693801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfRelocations = Sec->Relocations.size(); 694801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.PointerToRelocations = offset; 695801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 696801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::RelocationSize * Sec->Relocations.size(); 697801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 698801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (relocations::iterator cr = Sec->Relocations.begin(), 699801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer er = Sec->Relocations.end(); 700801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer cr != er; cr++) { 701801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer (*cr).Data.SymbolTableIndex = (*cr).Symb->Index; 702801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 703801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 704801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 705801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Sec->Symb->Aux.size() == 1 && "Section's symbol must have one aux!"); 706801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer AuxSymbol &Aux = Sec->Symb->Aux[0]; 707801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Aux.AuxType == ATSectionDefinition && 708801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section's symbol's aux symbol must be a Section Definition!"); 709801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.Length = Sec->Header.SizeOfRawData; 710801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.NumberOfRelocations = 711801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfRelocations; 712801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.NumberOfLinenumbers = 713801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfLineNumbers; 714801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 715801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 716801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.PointerToSymbolTable = offset; 717801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 718ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer Header.TimeDateStamp = sys::TimeValue::now().toEpochTime(); 719ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer 720801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Write it all to disk... 721801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteFileHeader(Header); 722801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 723801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer { 724801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sections::iterator i, ie; 725801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler::const_iterator j, je; 726801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 727801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (i = Sections.begin(), ie = Sections.end(); i != ie; i++) 728801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteSectionHeader((*i)->Header); 729801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 730801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (i = Sections.begin(), ie = Sections.end(), 731801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer j = Asm.begin(), je = Asm.end(); 732801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer (i != ie) && (j != je); i++, j++) { 733801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((*i)->Header.PointerToRawData != 0) { 734801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == (*i)->Header.PointerToRawData && 735801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRawData is insane!"); 736801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 737801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Asm.WriteSectionData(j, Layout, this); 738801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 739801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 740801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((*i)->Relocations.size() > 0) { 741801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == (*i)->Header.PointerToRelocations && 742801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRelocations is insane!"); 743801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 744801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (relocations::const_iterator k = (*i)->Relocations.begin(), 745801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ke = (*i)->Relocations.end(); 746801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer k != ke; k++) { 747801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteRelocation(k->Data); 748801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 749801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } else 750801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert((*i)->Header.PointerToRelocations == 0 && 751801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRelocations is insane!"); 752801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 753801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 754801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 755801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == Header.PointerToSymbolTable && 756801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Header::PointerToSymbolTable is insane!"); 757801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 758801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) 759801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteSymbol(*i); 760801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 761801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer OS.write((char const *)&Strings.Data.front(), Strings.Data.size()); 762b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 763b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 764b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//------------------------------------------------------------------------------ 765b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// WinCOFFObjectWriter factory function 766b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 767b162290e39afd49d4c7d342333b331bc96232720Chris Lattnernamespace llvm { 768da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer MCObjectWriter *createWinCOFFObjectWriter(raw_ostream &OS, bool is64Bit) { 769da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer return new WinCOFFObjectWriter(OS, is64Bit); 770b162290e39afd49d4c7d342333b331bc96232720Chris Lattner } 771933304ef0c3ec18c23d0b385c2117a6eae790430Michael J. Spencer} 772