WinCOFFObjectWriter.cpp revision a72d87899bc1bfdb17744aae2545a21b3630d3c1
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 58a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerclass COFFSymbol; 59a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerclass COFFSection; 60a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 61801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass COFFSymbol { 62801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 63801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::symbol Data; 64801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 65801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef llvm::SmallVector<AuxSymbol, 1> AuxiliarySymbols; 66801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 67801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer name Name; 68801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Index; 69801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer AuxiliarySymbols Aux; 70801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *Other; 71a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer COFFSection *Section; 72a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer int Relocations; 73801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 74801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSymbolData const *MCData; 75801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 76a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer COFFSymbol(llvm::StringRef name); 77801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t size() const; 78801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void set_name_offset(uint32_t Offset); 79a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 80a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer bool should_keep() const; 81801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 82801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 83801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// This class contains staging data for a COFF relocation entry. 84801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstruct COFFRelocation { 85801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::relocation Data; 86801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *Symb; 87801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 88801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFRelocation() : Symb(NULL) {} 89801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static size_t size() { return COFF::RelocationSize; } 90801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 91801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 92801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencertypedef std::vector<COFFRelocation> relocations; 93801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 94801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass COFFSection { 95801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 96801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::section Header; 97801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 98801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer std::string Name; 99801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Number; 100801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionData const *MCData; 101a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer COFFSymbol *Symbol; 102801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer relocations Relocations; 103801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 104a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer COFFSection(llvm::StringRef name); 105801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static size_t size(); 106801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 107801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 108801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// This class holds the COFF string table. 109801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass StringTable { 110801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef llvm::StringMap<size_t> map; 111801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer map Map; 112801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 113801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void update_length(); 114801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 115801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer std::vector<char> Data; 116801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 117801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer StringTable(); 118801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t size() const; 119801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t insert(llvm::StringRef String); 120801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 121801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 122801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass WinCOFFObjectWriter : public MCObjectWriter { 123801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 124801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 125801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef std::vector<COFFSymbol*> symbols; 126801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef std::vector<COFFSection*> sections; 127b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 128801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef StringMap<COFFSymbol *> name_symbol_map; 129801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef StringMap<COFFSection *> name_section_map; 130b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 131801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef DenseMap<MCSymbolData const *, COFFSymbol *> symbol_map; 132801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef DenseMap<MCSectionData const *, COFFSection *> section_map; 133b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 134801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Root level file contents. 13582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer bool Is64Bit; 136801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::header Header; 137801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sections Sections; 138801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer symbols Symbols; 139801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer StringTable Strings; 140b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 141801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Maps used during object file creation. 142801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer section_map SectionMap; 143801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer symbol_map SymbolMap; 144801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 145da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer WinCOFFObjectWriter(raw_ostream &OS, bool is64Bit); 146808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer ~WinCOFFObjectWriter(); 147801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 148801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *createSymbol(llvm::StringRef Name); 149801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *createSection(llvm::StringRef Name); 150801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 151801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer template <typename object_t, typename list_t> 152801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer object_t *createCOFFEntity(llvm::StringRef Name, list_t &List); 153801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 154801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void DefineSection(MCSectionData const &SectionData); 155801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void DefineSymbol(MCSymbolData const &SymbolData, MCAssembler &Assembler); 156801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 157a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer void MakeSymbolReal(COFFSymbol &S, size_t Index); 158a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer void MakeSectionReal(COFFSection &S, size_t Number); 159a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 160a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer bool ExportSection(COFFSection const *S); 161801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer bool ExportSymbol(MCSymbolData const &SymbolData, MCAssembler &Asm); 162801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 163a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer bool IsPhysicalSection(COFFSection *S); 164a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 165801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Entity writing methods. 166801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 167801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteFileHeader(const COFF::header &Header); 168801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteSymbol(const COFFSymbol *S); 169801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteAuxiliarySymbols(const COFFSymbol::AuxiliarySymbols &S); 170801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteSectionHeader(const COFF::section &S); 171801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteRelocation(const COFF::relocation &R); 172801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 173801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // MCObjectWriter interface implementation. 174801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 175801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void ExecutePostLayoutBinding(MCAssembler &Asm); 176801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 177801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void RecordRelocation(const MCAssembler &Asm, 178801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCAsmLayout &Layout, 179801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCFragment *Fragment, 180801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCFixup &Fixup, 181801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCValue Target, 182801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint64_t &FixedValue); 183801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 184801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteObject(const MCAssembler &Asm, const MCAsmLayout &Layout); 185801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 186801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 187801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 188801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint32_le(void *Data, uint32_t const &Value) { 189801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 190801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0x000000FF) >> 0; 191801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[1] = (Value & 0x0000FF00) >> 8; 192801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[2] = (Value & 0x00FF0000) >> 16; 193801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[3] = (Value & 0xFF000000) >> 24; 194801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 195801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 196801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint16_le(void *Data, uint16_t const &Value) { 197801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 198801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0x00FF) >> 0; 199801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[1] = (Value & 0xFF00) >> 8; 200801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 201801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 202801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint8_le(void *Data, uint8_t const &Value) { 203801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 204801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0xFF) >> 0; 205801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 206801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 207801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 208801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// Symbol class implementation 209801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 210a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. SpencerCOFFSymbol::COFFSymbol(llvm::StringRef name) 211a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer : Name(name.begin(), name.end()) 212a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Other(NULL) 213a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Section(NULL) 214a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Relocations(0) 215a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , MCData(NULL) { 216801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Data, 0, sizeof(Data)); 217801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 218b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 219801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t COFFSymbol::size() const { 220801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return COFF::SymbolSize + (Data.NumberOfAuxSymbols * COFF::SymbolSize); 221b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 222b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 223801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// In the case that the name does not fit within 8 bytes, the offset 224801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// into the string table is stored in the last 4 bytes instead, leaving 225801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// the first 4 bytes as 0. 226801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid COFFSymbol::set_name_offset(uint32_t Offset) { 227801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(Data.Name + 0, 0); 228801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(Data.Name + 4, Offset); 229801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 230801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 231a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer/// logic to decide if the symbol should be reported in the symbol table 232a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerbool COFFSymbol::should_keep() const { 233a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // no section means its external, keep it 234a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Section == NULL) 235a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 236a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 237a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if it has relocations pointing at it, keep it 238a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Relocations > 0) { 239a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(Section->Number != -1 && "Sections with relocations must be real!"); 240a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 241a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } 242a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 243a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if the section its in is being droped, drop it 244a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Section->Number == -1) 245a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return false; 246a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 247a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if it is the section symbol, keep it 248a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Section->Symbol == this) 249a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 250a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 251a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if its temporary, drop it 252a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (MCData && MCData->getSymbol().isTemporary()) 253a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return false; 254a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 255a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // otherwise, keep it 256a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 257a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 258a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 259801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 260801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// Section class implementation 261801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 262a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. SpencerCOFFSection::COFFSection(llvm::StringRef name) 263a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer : Name(name) 264a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , MCData(NULL) 265a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Symbol(NULL) { 266801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Header, 0, sizeof(Header)); 267801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 268801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 269801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t COFFSection::size() { 270801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return COFF::SectionSize; 271801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 272801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 273801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 274801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// StringTable class implementation 275801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 276801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// Write the length of the string table into Data. 277801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// The length of the string table includes uint32 length header. 278801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid StringTable::update_length() { 279801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(&Data.front(), Data.size()); 280801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 281801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 282801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerStringTable::StringTable() { 283801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // The string table data begins with the length of the entire string table 284801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // including the length header. Allocate space for this header. 285801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.resize(4); 286801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 287801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 288801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t StringTable::size() const { 289801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Data.size(); 290801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 291801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 292801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// Add String to the table iff it is not already there. 293801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// @returns the index into the string table where the string is now located. 294801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t StringTable::insert(llvm::StringRef String) { 295801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer map::iterator i = Map.find(String); 296801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 297801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (i != Map.end()) 298801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return i->second; 299801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 300801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Offset = Data.size(); 301801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 302801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Insert string data into string table. 303801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.insert(Data.end(), String.begin(), String.end()); 304801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.push_back('\0'); 305801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 306801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Put a reference to it in the map. 307801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Map[String] = Offset; 308801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 309801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update the internal length field. 310801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer update_length(); 311801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 312801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Offset; 313801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 314801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 315801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 316801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// WinCOFFObjectWriter class implementation 317801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 318da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. SpencerWinCOFFObjectWriter::WinCOFFObjectWriter(raw_ostream &OS, bool is64Bit) 31982c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer : MCObjectWriter(OS, true) 32082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer , Is64Bit(is64Bit) { 321801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Header, 0, sizeof(Header)); 322da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer 32382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Is64Bit ? Header.Machine = COFF::IMAGE_FILE_MACHINE_AMD64 324da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer : Header.Machine = COFF::IMAGE_FILE_MACHINE_I386; 325801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 326801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 327808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin KramerWinCOFFObjectWriter::~WinCOFFObjectWriter() { 328808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer for (symbols::iterator I = Symbols.begin(), E = Symbols.end(); I != E; ++I) 329808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer delete *I; 330808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer for (sections::iterator I = Sections.begin(), E = Sections.end(); I != E; ++I) 331808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer delete *I; 332808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer} 333808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer 334801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSymbol *WinCOFFObjectWriter::createSymbol(llvm::StringRef Name) { 335801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return createCOFFEntity<COFFSymbol>(Name, Symbols); 336801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 337801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 338801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSection *WinCOFFObjectWriter::createSection(llvm::StringRef Name) { 339801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return createCOFFEntity<COFFSection>(Name, Sections); 340801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 341801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 342801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// A template used to lookup or create a symbol/section, and initialize it if 343801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// needed. 344801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencertemplate <typename object_t, typename list_t> 345801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerobject_t *WinCOFFObjectWriter::createCOFFEntity(llvm::StringRef Name, 346801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer list_t &List) { 347a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer object_t *Object = new object_t(Name); 348801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 349801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer List.push_back(Object); 350801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 351801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Object; 352801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 353801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 354801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function takes a section data object from the assembler 355801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// and creates the associated COFF section staging object. 356801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::DefineSection(MCSectionData const &SectionData) { 357801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: Not sure how to verify this (at least in a debug build). 358801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionCOFF const &Sec = 359801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static_cast<MCSectionCOFF const &>(SectionData.getSection()); 360801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 361801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *coff_section = createSection(Sec.getSectionName()); 362801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = createSymbol(Sec.getSectionName()); 363801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 364a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_section->Symbol = coff_symbol; 365a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Section = coff_section; 366801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_STATIC; 367801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 368801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // In this case the auxiliary symbol is a Section Definition. 369801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux.resize(1); 370801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&coff_symbol->Aux[0], 0, sizeof(coff_symbol->Aux[0])); 371801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].AuxType = ATSectionDefinition; 372801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.SectionDefinition.Selection = Sec.getSelection(); 373801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 374801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Header.Characteristics = Sec.getCharacteristics(); 375801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 376801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint32_t &Characteristics = coff_section->Header.Characteristics; 377801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch (SectionData.getAlignment()) { 378801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 1: Characteristics |= COFF::IMAGE_SCN_ALIGN_1BYTES; break; 379801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 2: Characteristics |= COFF::IMAGE_SCN_ALIGN_2BYTES; break; 380801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 4: Characteristics |= COFF::IMAGE_SCN_ALIGN_4BYTES; break; 381801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 8: Characteristics |= COFF::IMAGE_SCN_ALIGN_8BYTES; break; 382801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 16: Characteristics |= COFF::IMAGE_SCN_ALIGN_16BYTES; break; 383801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 32: Characteristics |= COFF::IMAGE_SCN_ALIGN_32BYTES; break; 384801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 64: Characteristics |= COFF::IMAGE_SCN_ALIGN_64BYTES; break; 385801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 128: Characteristics |= COFF::IMAGE_SCN_ALIGN_128BYTES; break; 386801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 256: Characteristics |= COFF::IMAGE_SCN_ALIGN_256BYTES; break; 387801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 512: Characteristics |= COFF::IMAGE_SCN_ALIGN_512BYTES; break; 388801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 1024: Characteristics |= COFF::IMAGE_SCN_ALIGN_1024BYTES; break; 389801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 2048: Characteristics |= COFF::IMAGE_SCN_ALIGN_2048BYTES; break; 390801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 4096: Characteristics |= COFF::IMAGE_SCN_ALIGN_4096BYTES; break; 391801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 8192: Characteristics |= COFF::IMAGE_SCN_ALIGN_8192BYTES; break; 392801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer default: 393801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer llvm_unreachable("unsupported section alignment"); 394801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 395801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 396801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Bind internal COFF section to MC section. 397801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->MCData = &SectionData; 398801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer SectionMap[&SectionData] = coff_section; 399801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 400801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 401801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function takes a section data object from the assembler 402801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// and creates the associated COFF symbol staging object. 403801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::DefineSymbol(MCSymbolData const &SymbolData, 404a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer MCAssembler &Assembler) { 405a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(!SymbolData.getSymbol().isVariable() 406a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer && "Cannot define a symbol that is a variable!"); 407801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = createSymbol(SymbolData.getSymbol().getName()); 408801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 409801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.Type = (SymbolData.getFlags() & 0x0000FFFF) >> 0; 410801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = (SymbolData.getFlags() & 0x00FF0000) >> 16; 411801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 412801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // If no storage class was specified in the streamer, define it here. 413801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (coff_symbol->Data.StorageClass == 0) { 414801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer bool external = SymbolData.isExternal() || (SymbolData.Fragment == NULL); 415801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 416801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = 417a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer external ? COFF::IMAGE_SYM_CLASS_EXTERNAL : COFF::IMAGE_SYM_CLASS_LABEL; 418801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 419801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 420801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (SymbolData.getFlags() & COFF::SF_WeakReference) { 421801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL; 422801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 423801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCExpr *Value = SymbolData.getSymbol().getVariableValue(); 424801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 425801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: This assert message isn't very good. 426801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Value->getKind() == MCExpr::SymbolRef && 427801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Value must be a SymbolRef!"); 428801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 429801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCSymbolRefExpr *SymbolRef = 430801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static_cast<const MCSymbolRefExpr *>(Value); 431801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 432801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCSymbolData &OtherSymbolData = 433801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Assembler.getSymbolData(SymbolRef->getSymbol()); 434801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 435801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: This assert message isn't very good. 436801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(SymbolMap.find(&OtherSymbolData) != SymbolMap.end() && 437801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "OtherSymbolData must be in the symbol map!"); 438801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 439801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Other = SymbolMap[&OtherSymbolData]; 440801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 441801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Setup the Weak External auxiliary symbol. 442801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux.resize(1); 443801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&coff_symbol->Aux[0], 0, sizeof(coff_symbol->Aux[0])); 444801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].AuxType = ATWeakExternal; 445801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.TagIndex = 0; 446801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.Characteristics = 447801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY; 448801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 449801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 450a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (SymbolData.Fragment != NULL) 451a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Section = SectionMap[SymbolData.Fragment->getParent()]; 452a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 453801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Bind internal COFF symbol to MC symbol. 454801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->MCData = &SymbolData; 455801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer SymbolMap[&SymbolData] = coff_symbol; 456801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 457801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 458a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer/// making a section real involves assigned it a number and putting 459a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer/// name into the string table if needed 460a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencervoid WinCOFFObjectWriter::MakeSectionReal(COFFSection &S, size_t Number) { 461a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (S.Name.size() > COFF::NameSize) { 462a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer size_t StringTableEntry = Strings.insert(S.Name.c_str()); 463a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 464a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // FIXME: Why is this number 999999? This number is never mentioned in the 465a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // spec. I'm assuming this is due to the printed value needing to fit into 466a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // the S.Header.Name field. In which case why not 9999999 (7 9's instead of 467a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // 6)? The spec does not state if this entry should be null terminated in 468a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // this case, and thus this seems to be the best way to do it. I think I 469a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // just solved my own FIXME... 470a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (StringTableEntry > 999999) 471a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer report_fatal_error("COFF string table is greater than 999999 bytes."); 472a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 473a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer std::sprintf(S.Header.Name, "/%d", unsigned(StringTableEntry)); 474a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 475a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer std::memcpy(S.Header.Name, S.Name.c_str(), S.Name.size()); 476a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 477a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Number = Number; 478a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Symbol->Data.SectionNumber = S.Number; 479a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Symbol->Aux[0].Aux.SectionDefinition.Number = S.Number; 480a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 481a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 482a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencervoid WinCOFFObjectWriter::MakeSymbolReal(COFFSymbol &S, size_t Index) { 483a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (S.Name.size() > COFF::NameSize) { 484a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer size_t StringTableEntry = Strings.insert(S.Name.c_str()); 485a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 486a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.set_name_offset(StringTableEntry); 487a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 488a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer std::memcpy(S.Data.Name, S.Name.c_str(), S.Name.size()); 489a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Index = Index; 490a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 491a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 492a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerbool WinCOFFObjectWriter::ExportSection(COFFSection const *S) { 493a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return !S->MCData->getFragmentList().empty(); 494801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 495801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 496801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerbool WinCOFFObjectWriter::ExportSymbol(MCSymbolData const &SymbolData, 497801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler &Asm) { 498801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // This doesn't seem to be right. Strings referred to from the .data section 499801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // need symbols so they can be linked to code in the .text section right? 500801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 501801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // return Asm.isSymbolLinkerVisible (&SymbolData); 502801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 503a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // For now, all non-variable symbols are exported, 504a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // the linker will sort the rest out for us. 505a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return !SymbolData.getSymbol().isVariable(); 506a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 507a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 508a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerbool WinCOFFObjectWriter::IsPhysicalSection(COFFSection *S) { 509a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return (S->Header.Characteristics 510a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) == 0; 511801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 512801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 513801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 514801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// entity writing methods 515801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 516801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteFileHeader(const COFF::header &Header) { 517801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.Machine); 518801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.NumberOfSections); 519801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.TimeDateStamp); 520801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.PointerToSymbolTable); 521801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.NumberOfSymbols); 522801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.SizeOfOptionalHeader); 523801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.Characteristics); 524801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 525801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 526801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteSymbol(const COFFSymbol *S) { 527801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(S->Data.Name, COFF::NameSize)); 528801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S->Data.Value); 529801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S->Data.SectionNumber); 530801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S->Data.Type); 531801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(S->Data.StorageClass); 532801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(S->Data.NumberOfAuxSymbols); 533801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteAuxiliarySymbols(S->Aux); 534801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 535801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 536801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteAuxiliarySymbols( 537801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const COFFSymbol::AuxiliarySymbols &S) { 538801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for(COFFSymbol::AuxiliarySymbols::const_iterator i = S.begin(), e = S.end(); 539801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer i != e; ++i) { 540801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch(i->AuxType) { 541801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATFunctionDefinition: 542801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.TagIndex); 543801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.TotalSize); 544801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.PointerToLinenumber); 545801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.PointerToNextFunction); 546801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.FunctionDefinition.unused)); 547801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 548801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATbfAndefSymbol: 549801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused1)); 550801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.bfAndefSymbol.Linenumber); 551801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused2)); 552801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.bfAndefSymbol.PointerToNextFunction); 553801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused3)); 554801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 555801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATWeakExternal: 556801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.WeakExternal.TagIndex); 557801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.WeakExternal.Characteristics); 558801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.WeakExternal.unused)); 559801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 560801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATFile: 561801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(reinterpret_cast<const char *>(i->Aux.File.FileName), 562801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sizeof(i->Aux.File.FileName))); 563801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 564801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATSectionDefinition: 565801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.SectionDefinition.Length); 566801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.NumberOfRelocations); 567801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.NumberOfLinenumbers); 568801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.SectionDefinition.CheckSum); 569801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.Number); 570801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(i->Aux.SectionDefinition.Selection); 571801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.SectionDefinition.unused)); 572801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 573801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 574801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 575801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 576801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 577801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteSectionHeader(const COFF::section &S) { 578801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(S.Name, COFF::NameSize)); 579801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 580801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.VirtualSize); 581801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.VirtualAddress); 582801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.SizeOfRawData); 583801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToRawData); 584801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToRelocations); 585801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToLineNumbers); 586801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S.NumberOfRelocations); 587801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S.NumberOfLineNumbers); 588801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.Characteristics); 589801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 590801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 591801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteRelocation(const COFF::relocation &R) { 592801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(R.VirtualAddress); 593801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(R.SymbolTableIndex); 594801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(R.Type); 595b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 596b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 597b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//////////////////////////////////////////////////////////////////////////////// 598b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// MCObjectWriter interface implementations 599b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 600b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::ExecutePostLayoutBinding(MCAssembler &Asm) { 601801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // "Define" each section & symbol. This creates section & symbol 602a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // entries in the staging area. 603801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 604801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_iterator i = Asm.begin(), e = Asm.end(); i != e; i++) 605801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer DefineSection(*i); 606801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 607801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_symbol_iterator i = Asm.symbol_begin(), 608801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer e = Asm.symbol_end(); i != e; i++) { 609801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (ExportSymbol(*i, Asm)) 610801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer DefineSymbol(*i, Asm); 611801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 612b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 613b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 614b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::RecordRelocation(const MCAssembler &Asm, 615b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCAsmLayout &Layout, 616b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCFragment *Fragment, 617b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCFixup &Fixup, 618b162290e39afd49d4c7d342333b331bc96232720Chris Lattner MCValue Target, 619b162290e39afd49d4c7d342333b331bc96232720Chris Lattner uint64_t &FixedValue) { 620801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Target.getSymA() != NULL && "Relocation must reference a symbol!"); 62182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer 62282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer const MCSymbol *A = &Target.getSymA()->getSymbol(); 62382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer MCSymbolData &A_SD = Asm.getSymbolData(*A); 624801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 625801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionData const *SectionData = Fragment->getParent(); 626801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 62782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // Mark this symbol as requiring an entry in the symbol table. 628801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(SectionMap.find(SectionData) != SectionMap.end() && 629801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section must already have been defined in ExecutePostLayoutBinding!"); 63082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer assert(SymbolMap.find(&A_SD) != SymbolMap.end() && 631801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol must already have been defined in ExecutePostLayoutBinding!"); 632801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 633801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *coff_section = SectionMap[SectionData]; 63482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer COFFSymbol *coff_symbol = SymbolMap[&A_SD]; 63582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer 63682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer if (Target.getSymB()) { 63782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer const MCSymbol *B = &Target.getSymB()->getSymbol(); 63882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer MCSymbolData &B_SD = Asm.getSymbolData(*B); 639801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 64082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer FixedValue = Layout.getSymbolAddress(&A_SD) - Layout.getSymbolAddress(&B_SD); 64182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer 64282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // In the case where we have SymbA and SymB, we just need to store the delta 64382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // between the two symbols. Update FixedValue to account for the delta, and 64482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // skip recording the relocation. 64582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer return; 64682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer } else { 64782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer FixedValue = Target.getConstant(); 64882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer } 649801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 650801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFRelocation Reloc; 651801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 652425f634917542d7f09c189e2eb130752c6a12d2cDaniel Dunbar Reloc.Data.SymbolTableIndex = 0; 653801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.VirtualAddress = Layout.getFragmentOffset(Fragment); 654a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 655a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // turn relocations for temporary symbols into section relocations 656a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (coff_symbol->MCData->getSymbol().isTemporary()) { 657a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Reloc.Symb = coff_symbol->Section->Symbol; 658a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer FixedValue += Layout.getFragmentOffset(coff_symbol->MCData->Fragment); 659a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 660a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Reloc.Symb = coff_symbol; 661a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 662a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer ++Reloc.Symb->Relocations; 663801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 664801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.VirtualAddress += Fixup.getOffset(); 665801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 66682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer switch (Fixup.getKind()) { 66782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case X86::reloc_pcrel_4byte: 66882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case X86::reloc_riprel_4byte: 66982c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case X86::reloc_riprel_4byte_movq_load: 67082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Reloc.Data.Type = Is64Bit ? COFF::IMAGE_REL_AMD64_REL32 67182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer : COFF::IMAGE_REL_I386_REL32; 67282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // FIXME: Can anyone explain what this does other than adjust for the size 67382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // of the offset? 67482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer FixedValue += 4; 67582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer break; 67682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case FK_Data_4: 67782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Reloc.Data.Type = Is64Bit ? COFF::IMAGE_REL_AMD64_ADDR32 67882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer : COFF::IMAGE_REL_I386_DIR32; 67982c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer break; 68082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case FK_Data_8: 68182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer if (Is64Bit) 68282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Reloc.Data.Type = COFF::IMAGE_REL_AMD64_ADDR64; 68382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer else 684da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer llvm_unreachable("unsupported relocation type"); 68582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer break; 68682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer default: 68782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer llvm_unreachable("unsupported relocation type"); 68882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer } 689801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 690801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Relocations.push_back(Reloc); 691b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 692b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 693b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::WriteObject(const MCAssembler &Asm, 694b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCAsmLayout &Layout) { 695801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Assign symbol and section indexes and offsets. 696a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Header.NumberOfSections = 0; 697a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 698a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer for (sections::iterator i = Sections.begin(), 699a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer e = Sections.end(); i != e; i++) { 700a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Layout.getSectionSize((*i)->MCData) > 0) { 701a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer MakeSectionReal(**i, ++Header.NumberOfSections); 702a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else { 703a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer (*i)->Number = -1; 704a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } 705a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } 706801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 707801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.NumberOfSymbols = 0; 708801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 709801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) { 710801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = *i; 711801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSymbolData const *SymbolData = coff_symbol->MCData; 712801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 713801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update section number & offset for symbols that have them. 714801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((SymbolData != NULL) && (SymbolData->Fragment != NULL)) { 715a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Section != NULL); 716801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 717a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Data.SectionNumber = coff_symbol->Section->Number; 718237f8fe5df628065874b8590b364d04dfc2686fdMichael J. Spencer coff_symbol->Data.Value = Layout.getFragmentOffset(SymbolData->Fragment) 719237f8fe5df628065874b8590b364d04dfc2686fdMichael J. Spencer + SymbolData->Offset; 720801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 721801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 722a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (coff_symbol->should_keep()) { 723a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer MakeSymbolReal(*coff_symbol, Header.NumberOfSymbols++); 724a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 725a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // Update auxiliary symbol info. 726a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Data.NumberOfAuxSymbols = coff_symbol->Aux.size(); 727a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Header.NumberOfSymbols += coff_symbol->Data.NumberOfAuxSymbols; 728a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 729a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Index = -1; 730801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 731801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 732801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Fixup weak external references. 733801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) { 734a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer COFFSymbol *coff_symbol = *i; 735a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (coff_symbol->Other != NULL) { 736a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Index != -1); 737a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Aux.size() == 1 && 738801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol must contain one aux symbol!"); 739a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Aux[0].AuxType == ATWeakExternal && 740801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol's aux symbol must be a Weak External!"); 741a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.TagIndex = coff_symbol->Other->Index; 742801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 743801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 744801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 745801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Assign file offsets to COFF object file structures. 746801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 747801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer unsigned offset = 0; 748801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 749801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::HeaderSize; 750a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer offset += COFF::SectionSize * Header.NumberOfSections; 751801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 752801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_iterator i = Asm.begin(), 753801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer e = Asm.end(); 754801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer i != e; i++) { 755801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *Sec = SectionMap[i]; 756801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 757a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Sec->Number == -1) 758a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer continue; 759a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 760801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.SizeOfRawData = Layout.getSectionFileSize(i); 761801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 762a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (IsPhysicalSection(Sec)) { 763801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.PointerToRawData = offset; 764801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 765801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += Sec->Header.SizeOfRawData; 766801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 767801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 768801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (Sec->Relocations.size() > 0) { 769801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfRelocations = Sec->Relocations.size(); 770801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.PointerToRelocations = offset; 771801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 772801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::RelocationSize * Sec->Relocations.size(); 773801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 774801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (relocations::iterator cr = Sec->Relocations.begin(), 775801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer er = Sec->Relocations.end(); 776a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer cr != er; ++cr) { 777a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert((*cr).Symb->Index != -1); 778801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer (*cr).Data.SymbolTableIndex = (*cr).Symb->Index; 779801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 780801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 781801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 782a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(Sec->Symbol->Aux.size() == 1 783a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer && "Section's symbol must have one aux!"); 784a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer AuxSymbol &Aux = Sec->Symbol->Aux[0]; 785801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Aux.AuxType == ATSectionDefinition && 786801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section's symbol's aux symbol must be a Section Definition!"); 787801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.Length = Sec->Header.SizeOfRawData; 788801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.NumberOfRelocations = 789801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfRelocations; 790801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.NumberOfLinenumbers = 791801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfLineNumbers; 792801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 793801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 794801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.PointerToSymbolTable = offset; 795801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 796ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer Header.TimeDateStamp = sys::TimeValue::now().toEpochTime(); 797ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer 798801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Write it all to disk... 799801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteFileHeader(Header); 800801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 801801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer { 802801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sections::iterator i, ie; 803801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler::const_iterator j, je; 804801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 805801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (i = Sections.begin(), ie = Sections.end(); i != ie; i++) 806a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if ((*i)->Number != -1) 807a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer WriteSectionHeader((*i)->Header); 808801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 809801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (i = Sections.begin(), ie = Sections.end(), 810801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer j = Asm.begin(), je = Asm.end(); 811a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer (i != ie) && (j != je); ++i, ++j) { 812a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 813a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if ((*i)->Number == -1) 814a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer continue; 815a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 816801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((*i)->Header.PointerToRawData != 0) { 817801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == (*i)->Header.PointerToRawData && 818801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRawData is insane!"); 819801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 820801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Asm.WriteSectionData(j, Layout, this); 821801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 822801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 823801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((*i)->Relocations.size() > 0) { 824801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == (*i)->Header.PointerToRelocations && 825801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRelocations is insane!"); 826801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 827801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (relocations::const_iterator k = (*i)->Relocations.begin(), 828801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ke = (*i)->Relocations.end(); 829801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer k != ke; k++) { 830801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteRelocation(k->Data); 831801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 832801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } else 833801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert((*i)->Header.PointerToRelocations == 0 && 834801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRelocations is insane!"); 835801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 836801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 837801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 838801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == Header.PointerToSymbolTable && 839801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Header::PointerToSymbolTable is insane!"); 840801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 841801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) 842a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if ((*i)->Index != -1) 843a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer WriteSymbol(*i); 844801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 845801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer OS.write((char const *)&Strings.Data.front(), Strings.Data.size()); 846b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 847b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 848b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//------------------------------------------------------------------------------ 849b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// WinCOFFObjectWriter factory function 850b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 851b162290e39afd49d4c7d342333b331bc96232720Chris Lattnernamespace llvm { 852da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer MCObjectWriter *createWinCOFFObjectWriter(raw_ostream &OS, bool is64Bit) { 853da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer return new WinCOFFObjectWriter(OS, is64Bit); 854b162290e39afd49d4c7d342333b331bc96232720Chris Lattner } 855933304ef0c3ec18c23d0b385c2117a6eae790430Michael J. Spencer} 856