WinCOFFObjectWriter.cpp revision 4cee2890a66974af506f2125243114cc14bd5556
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; 689cf23a9ab466a900bc0f937bc930d398d6097766Michael J. Spencer int 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; 999cf23a9ab466a900bc0f937bc930d398d6097766Michael J. Spencer int 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 1284cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer typedef DenseMap<MCSymbol const *, COFFSymbol *> symbol_map; 1294cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer typedef DenseMap<MCSection const *, COFFSection *> section_map; 130b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 131801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Root level file contents. 13282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer bool Is64Bit; 133801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::header Header; 134801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sections Sections; 135801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer symbols Symbols; 136801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer StringTable Strings; 137b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 138801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Maps used during object file creation. 139801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer section_map SectionMap; 140801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer symbol_map SymbolMap; 141801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 142da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer WinCOFFObjectWriter(raw_ostream &OS, bool is64Bit); 143808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer ~WinCOFFObjectWriter(); 144801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 1454cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSymbol *createSymbol(StringRef Name); 1464cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSymbol *GetOrCreateCOFFSymbol(const MCSymbol * Symbol); 1474cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSection *createSection(StringRef Name); 148801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 149801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer template <typename object_t, typename list_t> 150801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer object_t *createCOFFEntity(llvm::StringRef Name, list_t &List); 151801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 152801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void DefineSection(MCSectionData const &SectionData); 153801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void DefineSymbol(MCSymbolData const &SymbolData, MCAssembler &Assembler); 154801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 155a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer void MakeSymbolReal(COFFSymbol &S, size_t Index); 156a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer void MakeSectionReal(COFFSection &S, size_t Number); 157a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 158a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer bool ExportSection(COFFSection const *S); 159801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer bool ExportSymbol(MCSymbolData const &SymbolData, MCAssembler &Asm); 160801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 161a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer bool IsPhysicalSection(COFFSection *S); 162a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 163801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Entity writing methods. 164801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 165801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteFileHeader(const COFF::header &Header); 166801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteSymbol(const COFFSymbol *S); 167801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteAuxiliarySymbols(const COFFSymbol::AuxiliarySymbols &S); 168801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteSectionHeader(const COFF::section &S); 169801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteRelocation(const COFF::relocation &R); 170801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 171801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // MCObjectWriter interface implementation. 172801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 173801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void ExecutePostLayoutBinding(MCAssembler &Asm); 174801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 175801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void RecordRelocation(const MCAssembler &Asm, 176801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCAsmLayout &Layout, 177801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCFragment *Fragment, 178801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCFixup &Fixup, 179801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCValue Target, 180801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint64_t &FixedValue); 181801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 1827070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindola virtual bool IsFixupFullyResolved(const MCAssembler &Asm, 1837070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindola const MCValue Target, 1847070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindola bool IsPCRel, 1857070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindola const MCFragment *DF) const; 1867070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindola 1878f413fa9c00dbaea000ddfe265ab5edd285ea3abRafael Espindola void WriteObject(MCAssembler &Asm, const MCAsmLayout &Layout); 188801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 189801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 190801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 191801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint32_le(void *Data, uint32_t const &Value) { 192801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 193801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0x000000FF) >> 0; 194801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[1] = (Value & 0x0000FF00) >> 8; 195801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[2] = (Value & 0x00FF0000) >> 16; 196801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[3] = (Value & 0xFF000000) >> 24; 197801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 198801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 199801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint16_le(void *Data, uint16_t const &Value) { 200801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 201801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0x00FF) >> 0; 202801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[1] = (Value & 0xFF00) >> 8; 203801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 204801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 205801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint8_le(void *Data, uint8_t const &Value) { 206801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 207801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0xFF) >> 0; 208801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 209801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 210801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 211801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// Symbol class implementation 212801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 213a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. SpencerCOFFSymbol::COFFSymbol(llvm::StringRef name) 214a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer : Name(name.begin(), name.end()) 215a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Other(NULL) 216a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Section(NULL) 217a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Relocations(0) 218a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , MCData(NULL) { 219801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Data, 0, sizeof(Data)); 220801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 221b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 222801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t COFFSymbol::size() const { 223801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return COFF::SymbolSize + (Data.NumberOfAuxSymbols * COFF::SymbolSize); 224b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 225b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 226801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// In the case that the name does not fit within 8 bytes, the offset 227801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// into the string table is stored in the last 4 bytes instead, leaving 228801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// the first 4 bytes as 0. 229801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid COFFSymbol::set_name_offset(uint32_t Offset) { 230801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(Data.Name + 0, 0); 231801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(Data.Name + 4, Offset); 232801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 233801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 234a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer/// logic to decide if the symbol should be reported in the symbol table 235a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerbool COFFSymbol::should_keep() const { 236a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // no section means its external, keep it 237a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Section == NULL) 238a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 239a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 240a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if it has relocations pointing at it, keep it 241a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Relocations > 0) { 242a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(Section->Number != -1 && "Sections with relocations must be real!"); 243a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 244a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } 245a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 246a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if the section its in is being droped, drop it 247a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Section->Number == -1) 248a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return false; 249a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 250a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if it is the section symbol, keep it 251a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Section->Symbol == this) 252a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 253a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 254a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if its temporary, drop it 255a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (MCData && MCData->getSymbol().isTemporary()) 256a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return false; 257a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 258a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // otherwise, keep it 259a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 260a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 261a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 262801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 263801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// Section class implementation 264801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 265a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. SpencerCOFFSection::COFFSection(llvm::StringRef name) 266a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer : Name(name) 267a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , MCData(NULL) 268a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Symbol(NULL) { 269801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Header, 0, sizeof(Header)); 270801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 271801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 272801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t COFFSection::size() { 273801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return COFF::SectionSize; 274801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 275801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 276801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 277801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// StringTable class implementation 278801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 279801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// Write the length of the string table into Data. 280801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// The length of the string table includes uint32 length header. 281801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid StringTable::update_length() { 282801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(&Data.front(), Data.size()); 283801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 284801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 285801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerStringTable::StringTable() { 286801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // The string table data begins with the length of the entire string table 287801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // including the length header. Allocate space for this header. 288801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.resize(4); 289801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 290801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 291801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t StringTable::size() const { 292801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Data.size(); 293801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 294801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 295801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// Add String to the table iff it is not already there. 296801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// @returns the index into the string table where the string is now located. 297801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t StringTable::insert(llvm::StringRef String) { 298801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer map::iterator i = Map.find(String); 299801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 300801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (i != Map.end()) 301801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return i->second; 302801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 303801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Offset = Data.size(); 304801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 305801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Insert string data into string table. 306801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.insert(Data.end(), String.begin(), String.end()); 307801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.push_back('\0'); 308801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 309801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Put a reference to it in the map. 310801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Map[String] = Offset; 311801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 312801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update the internal length field. 313801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer update_length(); 314801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 315801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Offset; 316801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 317801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 318801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 319801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// WinCOFFObjectWriter class implementation 320801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 321da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. SpencerWinCOFFObjectWriter::WinCOFFObjectWriter(raw_ostream &OS, bool is64Bit) 32282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer : MCObjectWriter(OS, true) 32382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer , Is64Bit(is64Bit) { 324801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Header, 0, sizeof(Header)); 325da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer 32682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Is64Bit ? Header.Machine = COFF::IMAGE_FILE_MACHINE_AMD64 327da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer : Header.Machine = COFF::IMAGE_FILE_MACHINE_I386; 328801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 329801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 330808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin KramerWinCOFFObjectWriter::~WinCOFFObjectWriter() { 331808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer for (symbols::iterator I = Symbols.begin(), E = Symbols.end(); I != E; ++I) 332808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer delete *I; 333808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer for (sections::iterator I = Sections.begin(), E = Sections.end(); I != E; ++I) 334808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer delete *I; 335808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer} 336808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer 3374cee2890a66974af506f2125243114cc14bd5556Michael J. SpencerCOFFSymbol *WinCOFFObjectWriter::createSymbol(StringRef Name) { 338801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return createCOFFEntity<COFFSymbol>(Name, Symbols); 339801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 340801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 3414cee2890a66974af506f2125243114cc14bd5556Michael J. SpencerCOFFSymbol *WinCOFFObjectWriter::GetOrCreateCOFFSymbol(const MCSymbol * Symbol){ 3424cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer symbol_map::iterator i = SymbolMap.find(Symbol); 3434cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer if (i != SymbolMap.end()) 3444cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer return i->second; 3454cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSymbol *RetSymbol 3464cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer = createCOFFEntity<COFFSymbol>(Symbol->getName(), Symbols); 3474cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer SymbolMap[Symbol] = RetSymbol; 3484cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer return RetSymbol; 3494cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer} 3504cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer 351801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSection *WinCOFFObjectWriter::createSection(llvm::StringRef Name) { 352801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return createCOFFEntity<COFFSection>(Name, Sections); 353801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 354801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 355801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// A template used to lookup or create a symbol/section, and initialize it if 356801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// needed. 357801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencertemplate <typename object_t, typename list_t> 358801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerobject_t *WinCOFFObjectWriter::createCOFFEntity(llvm::StringRef Name, 359801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer list_t &List) { 360a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer object_t *Object = new object_t(Name); 361801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 362801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer List.push_back(Object); 363801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 364801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Object; 365801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 366801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 367801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function takes a section data object from the assembler 368801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// and creates the associated COFF section staging object. 369801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::DefineSection(MCSectionData const &SectionData) { 370d47f4a9c982d264e46a6a2fe0f357288768bb5b9Michael J. Spencer assert(SectionData.getSection().getVariant() == MCSection::SV_COFF 371d47f4a9c982d264e46a6a2fe0f357288768bb5b9Michael J. Spencer && "Got non COFF section in the COFF backend!"); 372801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: Not sure how to verify this (at least in a debug build). 373801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionCOFF const &Sec = 374801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static_cast<MCSectionCOFF const &>(SectionData.getSection()); 375801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 376801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *coff_section = createSection(Sec.getSectionName()); 377801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = createSymbol(Sec.getSectionName()); 378801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 379a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_section->Symbol = coff_symbol; 380a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Section = coff_section; 381801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_STATIC; 382801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 383801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // In this case the auxiliary symbol is a Section Definition. 384801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux.resize(1); 385801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&coff_symbol->Aux[0], 0, sizeof(coff_symbol->Aux[0])); 386801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].AuxType = ATSectionDefinition; 387801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.SectionDefinition.Selection = Sec.getSelection(); 388801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 389801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Header.Characteristics = Sec.getCharacteristics(); 390801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 391801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint32_t &Characteristics = coff_section->Header.Characteristics; 392801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch (SectionData.getAlignment()) { 393801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 1: Characteristics |= COFF::IMAGE_SCN_ALIGN_1BYTES; break; 394801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 2: Characteristics |= COFF::IMAGE_SCN_ALIGN_2BYTES; break; 395801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 4: Characteristics |= COFF::IMAGE_SCN_ALIGN_4BYTES; break; 396801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 8: Characteristics |= COFF::IMAGE_SCN_ALIGN_8BYTES; break; 397801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 16: Characteristics |= COFF::IMAGE_SCN_ALIGN_16BYTES; break; 398801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 32: Characteristics |= COFF::IMAGE_SCN_ALIGN_32BYTES; break; 399801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 64: Characteristics |= COFF::IMAGE_SCN_ALIGN_64BYTES; break; 400801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 128: Characteristics |= COFF::IMAGE_SCN_ALIGN_128BYTES; break; 401801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 256: Characteristics |= COFF::IMAGE_SCN_ALIGN_256BYTES; break; 402801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 512: Characteristics |= COFF::IMAGE_SCN_ALIGN_512BYTES; break; 403801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 1024: Characteristics |= COFF::IMAGE_SCN_ALIGN_1024BYTES; break; 404801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 2048: Characteristics |= COFF::IMAGE_SCN_ALIGN_2048BYTES; break; 405801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 4096: Characteristics |= COFF::IMAGE_SCN_ALIGN_4096BYTES; break; 406801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 8192: Characteristics |= COFF::IMAGE_SCN_ALIGN_8192BYTES; break; 407801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer default: 408801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer llvm_unreachable("unsupported section alignment"); 409801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 410801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 411801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Bind internal COFF section to MC section. 412801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->MCData = &SectionData; 4134cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer SectionMap[&SectionData.getSection()] = coff_section; 414801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 415801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 416801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function takes a section data object from the assembler 417801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// and creates the associated COFF symbol staging object. 418801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::DefineSymbol(MCSymbolData const &SymbolData, 419a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer MCAssembler &Assembler) { 4204cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSymbol *coff_symbol = GetOrCreateCOFFSymbol(&SymbolData.getSymbol()); 421801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 422801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.Type = (SymbolData.getFlags() & 0x0000FFFF) >> 0; 423801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = (SymbolData.getFlags() & 0x00FF0000) >> 16; 424801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 4254cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer if (SymbolData.getFlags() & COFF::SF_WeakExternal) { 426801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL; 427801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 4284cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer if (SymbolData.getSymbol().isVariable()) { 4294cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL; 4304cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer const MCExpr *Value = SymbolData.getSymbol().getVariableValue(); 431801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 4324cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer // FIXME: This assert message isn't very good. 4334cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer assert(Value->getKind() == MCExpr::SymbolRef && 4344cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer "Value must be a SymbolRef!"); 435801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 4364cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer const MCSymbolRefExpr *SymbolRef = 4374cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer static_cast<const MCSymbolRefExpr *>(Value); 4384cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer coff_symbol->Other = GetOrCreateCOFFSymbol(&SymbolRef->getSymbol()); 4394cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer } else { 4404cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer std::string WeakName = std::string(".weak.") 4414cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer + SymbolData.getSymbol().getName().str() 4424cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer + ".default"; 4434cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSymbol *WeakDefault = createSymbol(WeakName); 4444cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer WeakDefault->Data.SectionNumber = COFF::IMAGE_SYM_ABSOLUTE; 4454cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer WeakDefault->Data.StorageClass = COFF::IMAGE_SYM_CLASS_EXTERNAL; 4464cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer WeakDefault->Data.Type = 0; 4474cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer WeakDefault->Data.Value = 0; 4484cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer coff_symbol->Other = WeakDefault; 4494cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer } 450801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 451801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Setup the Weak External auxiliary symbol. 452801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux.resize(1); 453801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&coff_symbol->Aux[0], 0, sizeof(coff_symbol->Aux[0])); 454801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].AuxType = ATWeakExternal; 455801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.TagIndex = 0; 456801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.Characteristics = 4574cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY; 4584cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer } 4594cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer 4604cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer // If no storage class was specified in the streamer, define it here. 4614cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer if (coff_symbol->Data.StorageClass == 0) { 4624cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer bool external = SymbolData.isExternal() || (SymbolData.Fragment == NULL); 4634cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer 4644cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer coff_symbol->Data.StorageClass = 4654cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer external ? COFF::IMAGE_SYM_CLASS_EXTERNAL : COFF::IMAGE_SYM_CLASS_STATIC; 466801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 467801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 468a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (SymbolData.Fragment != NULL) 4694cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer coff_symbol->Section = 4704cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer SectionMap[&SymbolData.Fragment->getParent()->getSection()]; 471a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 472801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Bind internal COFF symbol to MC symbol. 473801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->MCData = &SymbolData; 4744cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer SymbolMap[&SymbolData.getSymbol()] = coff_symbol; 475801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 476801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 477a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer/// making a section real involves assigned it a number and putting 478a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer/// name into the string table if needed 479a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencervoid WinCOFFObjectWriter::MakeSectionReal(COFFSection &S, size_t Number) { 480a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (S.Name.size() > COFF::NameSize) { 481a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer size_t StringTableEntry = Strings.insert(S.Name.c_str()); 482a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 483a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // FIXME: Why is this number 999999? This number is never mentioned in the 484a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // spec. I'm assuming this is due to the printed value needing to fit into 485a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // the S.Header.Name field. In which case why not 9999999 (7 9's instead of 486a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // 6)? The spec does not state if this entry should be null terminated in 487a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // this case, and thus this seems to be the best way to do it. I think I 488a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // just solved my own FIXME... 489a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (StringTableEntry > 999999) 490a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer report_fatal_error("COFF string table is greater than 999999 bytes."); 491a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 492a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer std::sprintf(S.Header.Name, "/%d", unsigned(StringTableEntry)); 493a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 494a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer std::memcpy(S.Header.Name, S.Name.c_str(), S.Name.size()); 495a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 496a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Number = Number; 497a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Symbol->Data.SectionNumber = S.Number; 498a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Symbol->Aux[0].Aux.SectionDefinition.Number = S.Number; 499a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 500a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 501a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencervoid WinCOFFObjectWriter::MakeSymbolReal(COFFSymbol &S, size_t Index) { 502a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (S.Name.size() > COFF::NameSize) { 503a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer size_t StringTableEntry = Strings.insert(S.Name.c_str()); 504a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 505a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.set_name_offset(StringTableEntry); 506a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 507a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer std::memcpy(S.Data.Name, S.Name.c_str(), S.Name.size()); 508a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Index = Index; 509a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 510a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 511a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerbool WinCOFFObjectWriter::ExportSection(COFFSection const *S) { 512a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return !S->MCData->getFragmentList().empty(); 513801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 514801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 515801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerbool WinCOFFObjectWriter::ExportSymbol(MCSymbolData const &SymbolData, 516801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler &Asm) { 517801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // This doesn't seem to be right. Strings referred to from the .data section 518801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // need symbols so they can be linked to code in the .text section right? 519801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 520801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // return Asm.isSymbolLinkerVisible (&SymbolData); 521801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 522a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // For now, all non-variable symbols are exported, 523a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // the linker will sort the rest out for us. 5244cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer return SymbolData.isExternal() || !SymbolData.getSymbol().isVariable(); 525a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 526a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 527a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerbool WinCOFFObjectWriter::IsPhysicalSection(COFFSection *S) { 528a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return (S->Header.Characteristics 529a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) == 0; 530801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 531801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 532801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 533801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// entity writing methods 534801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 535801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteFileHeader(const COFF::header &Header) { 536801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.Machine); 537801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.NumberOfSections); 538801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.TimeDateStamp); 539801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.PointerToSymbolTable); 540801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.NumberOfSymbols); 541801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.SizeOfOptionalHeader); 542801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.Characteristics); 543801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 544801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 545801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteSymbol(const COFFSymbol *S) { 546801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(S->Data.Name, COFF::NameSize)); 547801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S->Data.Value); 548801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S->Data.SectionNumber); 549801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S->Data.Type); 550801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(S->Data.StorageClass); 551801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(S->Data.NumberOfAuxSymbols); 552801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteAuxiliarySymbols(S->Aux); 553801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 554801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 555801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteAuxiliarySymbols( 556801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const COFFSymbol::AuxiliarySymbols &S) { 557801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for(COFFSymbol::AuxiliarySymbols::const_iterator i = S.begin(), e = S.end(); 558801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer i != e; ++i) { 559801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch(i->AuxType) { 560801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATFunctionDefinition: 561801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.TagIndex); 562801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.TotalSize); 563801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.PointerToLinenumber); 564801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.PointerToNextFunction); 565801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.FunctionDefinition.unused)); 566801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 567801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATbfAndefSymbol: 568801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused1)); 569801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.bfAndefSymbol.Linenumber); 570801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused2)); 571801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.bfAndefSymbol.PointerToNextFunction); 572801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused3)); 573801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 574801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATWeakExternal: 575801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.WeakExternal.TagIndex); 576801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.WeakExternal.Characteristics); 577801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.WeakExternal.unused)); 578801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 579801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATFile: 580801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(reinterpret_cast<const char *>(i->Aux.File.FileName), 581801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sizeof(i->Aux.File.FileName))); 582801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 583801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATSectionDefinition: 584801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.SectionDefinition.Length); 585801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.NumberOfRelocations); 586801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.NumberOfLinenumbers); 587801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.SectionDefinition.CheckSum); 588801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.Number); 589801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(i->Aux.SectionDefinition.Selection); 590801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.SectionDefinition.unused)); 591801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 592801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 593801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 594801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 595801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 596801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteSectionHeader(const COFF::section &S) { 597801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(S.Name, COFF::NameSize)); 598801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 599801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.VirtualSize); 600801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.VirtualAddress); 601801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.SizeOfRawData); 602801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToRawData); 603801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToRelocations); 604801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToLineNumbers); 605801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S.NumberOfRelocations); 606801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S.NumberOfLineNumbers); 607801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.Characteristics); 608801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 609801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 610801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteRelocation(const COFF::relocation &R) { 611801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(R.VirtualAddress); 612801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(R.SymbolTableIndex); 613801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(R.Type); 614b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 615b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 616b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//////////////////////////////////////////////////////////////////////////////// 617b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// MCObjectWriter interface implementations 618b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 619b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::ExecutePostLayoutBinding(MCAssembler &Asm) { 620801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // "Define" each section & symbol. This creates section & symbol 621a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // entries in the staging area. 622801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 623801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_iterator i = Asm.begin(), e = Asm.end(); i != e; i++) 624801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer DefineSection(*i); 625801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 626801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_symbol_iterator i = Asm.symbol_begin(), 627801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer e = Asm.symbol_end(); i != e; i++) { 628801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (ExportSymbol(*i, Asm)) 629801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer DefineSymbol(*i, Asm); 630801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 631b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 632b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 633b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::RecordRelocation(const MCAssembler &Asm, 634b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCAsmLayout &Layout, 635b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCFragment *Fragment, 636b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCFixup &Fixup, 637b162290e39afd49d4c7d342333b331bc96232720Chris Lattner MCValue Target, 638b162290e39afd49d4c7d342333b331bc96232720Chris Lattner uint64_t &FixedValue) { 639801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Target.getSymA() != NULL && "Relocation must reference a symbol!"); 64082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer 64182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer const MCSymbol *A = &Target.getSymA()->getSymbol(); 64282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer MCSymbolData &A_SD = Asm.getSymbolData(*A); 643801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 644801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionData const *SectionData = Fragment->getParent(); 645801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 64682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // Mark this symbol as requiring an entry in the symbol table. 6474cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer assert(SectionMap.find(&SectionData->getSection()) != SectionMap.end() && 648801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section must already have been defined in ExecutePostLayoutBinding!"); 6494cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer assert(SymbolMap.find(&A_SD.getSymbol()) != SymbolMap.end() && 650801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol must already have been defined in ExecutePostLayoutBinding!"); 651801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 6524cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSection *coff_section = SectionMap[&SectionData->getSection()]; 6534cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSymbol *coff_symbol = SymbolMap[&A_SD.getSymbol()]; 65482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer 65582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer if (Target.getSymB()) { 656b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer if (&Target.getSymA()->getSymbol().getSection() 657b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer != &Target.getSymB()->getSymbol().getSection()) { 658b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer llvm_unreachable("Symbol relative relocations are only allowed between " 659b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer "symbols in the same section"); 660b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer } 66182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer const MCSymbol *B = &Target.getSymB()->getSymbol(); 66282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer MCSymbolData &B_SD = Asm.getSymbolData(*B); 663801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 66482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer FixedValue = Layout.getSymbolAddress(&A_SD) - Layout.getSymbolAddress(&B_SD); 66582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer 66682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // In the case where we have SymbA and SymB, we just need to store the delta 66782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // between the two symbols. Update FixedValue to account for the delta, and 66882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // skip recording the relocation. 66982c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer return; 67082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer } else { 67182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer FixedValue = Target.getConstant(); 67282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer } 673801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 674801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFRelocation Reloc; 675801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 676425f634917542d7f09c189e2eb130752c6a12d2cDaniel Dunbar Reloc.Data.SymbolTableIndex = 0; 677801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.VirtualAddress = Layout.getFragmentOffset(Fragment); 678a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 679ea1104a4c376634ed8eb693f6c71e0ac51074949Michael J. Spencer // Turn relocations for temporary symbols into section relocations. 680a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (coff_symbol->MCData->getSymbol().isTemporary()) { 681a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Reloc.Symb = coff_symbol->Section->Symbol; 682eb6e77f8cccd14cdba995ff8231f2c9faea9bfccMichael J. Spencer FixedValue += Layout.getFragmentOffset(coff_symbol->MCData->Fragment) 683eb6e77f8cccd14cdba995ff8231f2c9faea9bfccMichael J. Spencer + coff_symbol->MCData->getOffset(); 684a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 685a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Reloc.Symb = coff_symbol; 686a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 687a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer ++Reloc.Symb->Relocations; 688801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 689801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.VirtualAddress += Fixup.getOffset(); 690801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 69182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer switch (Fixup.getKind()) { 69282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case X86::reloc_pcrel_4byte: 69382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case X86::reloc_riprel_4byte: 69482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case X86::reloc_riprel_4byte_movq_load: 69582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Reloc.Data.Type = Is64Bit ? COFF::IMAGE_REL_AMD64_REL32 69682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer : COFF::IMAGE_REL_I386_REL32; 69782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // FIXME: Can anyone explain what this does other than adjust for the size 69882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // of the offset? 69982c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer FixedValue += 4; 70082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer break; 70182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case FK_Data_4: 702a8c02c3bdd68e65d14fb6b0d56989663754059b0Rafael Espindola case X86::reloc_signed_4byte: 70382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Reloc.Data.Type = Is64Bit ? COFF::IMAGE_REL_AMD64_ADDR32 70482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer : COFF::IMAGE_REL_I386_DIR32; 70582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer break; 70682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case FK_Data_8: 70782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer if (Is64Bit) 70882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Reloc.Data.Type = COFF::IMAGE_REL_AMD64_ADDR64; 70982c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer else 710da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer llvm_unreachable("unsupported relocation type"); 71182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer break; 71282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer default: 71382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer llvm_unreachable("unsupported relocation type"); 71482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer } 715801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 716801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Relocations.push_back(Reloc); 717b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 718b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 7197070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindolabool WinCOFFObjectWriter::IsFixupFullyResolved(const MCAssembler &Asm, 7207070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindola const MCValue Target, 7217070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindola bool IsPCRel, 7227070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindola const MCFragment *DF) const { 723b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer // If this is a PCrel relocation, find the section this fixup value is 724b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer // relative to. 725b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer const MCSection *BaseSection = 0; 726b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer if (IsPCRel) { 727b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer BaseSection = &DF->getParent()->getSection(); 728b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer assert(BaseSection); 729b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer } 730b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer 731b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer const MCSection *SectionA = 0; 732b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer const MCSymbol *SymbolA = 0; 733b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer if (const MCSymbolRefExpr *A = Target.getSymA()) { 734b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer SymbolA = &A->getSymbol(); 735b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer SectionA = &SymbolA->getSection(); 736b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer } 737b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer 738b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer const MCSection *SectionB = 0; 739b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer if (const MCSymbolRefExpr *B = Target.getSymB()) { 740b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer SectionB = &B->getSymbol().getSection(); 741b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer } 742b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer 743b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer if (!BaseSection) 744b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer return SectionA == SectionB; 745b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer 746b225adee29bef5100cd33f030c61c76d0efc8a10Michael J. Spencer return !SectionB && BaseSection == SectionA; 7477070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindola} 7487070387f08f7dc797b554ed8013cba9f8b74121aRafael Espindola 7498f413fa9c00dbaea000ddfe265ab5edd285ea3abRafael Espindolavoid WinCOFFObjectWriter::WriteObject(MCAssembler &Asm, 750b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCAsmLayout &Layout) { 751801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Assign symbol and section indexes and offsets. 752a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Header.NumberOfSections = 0; 753a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 754a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer for (sections::iterator i = Sections.begin(), 755a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer e = Sections.end(); i != e; i++) { 756a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Layout.getSectionSize((*i)->MCData) > 0) { 757a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer MakeSectionReal(**i, ++Header.NumberOfSections); 758a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else { 759a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer (*i)->Number = -1; 760a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } 761a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } 762801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 763801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.NumberOfSymbols = 0; 764801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 765801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) { 766801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = *i; 767801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSymbolData const *SymbolData = coff_symbol->MCData; 768801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 769801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update section number & offset for symbols that have them. 770801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((SymbolData != NULL) && (SymbolData->Fragment != NULL)) { 771a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Section != NULL); 772801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 773a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Data.SectionNumber = coff_symbol->Section->Number; 774237f8fe5df628065874b8590b364d04dfc2686fdMichael J. Spencer coff_symbol->Data.Value = Layout.getFragmentOffset(SymbolData->Fragment) 775237f8fe5df628065874b8590b364d04dfc2686fdMichael J. Spencer + SymbolData->Offset; 776801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 777801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 778a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (coff_symbol->should_keep()) { 779a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer MakeSymbolReal(*coff_symbol, Header.NumberOfSymbols++); 780a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 781a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // Update auxiliary symbol info. 782a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Data.NumberOfAuxSymbols = coff_symbol->Aux.size(); 783a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Header.NumberOfSymbols += coff_symbol->Data.NumberOfAuxSymbols; 784a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 785a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Index = -1; 786801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 787801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 788801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Fixup weak external references. 789801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) { 790a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer COFFSymbol *coff_symbol = *i; 791a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (coff_symbol->Other != NULL) { 792a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Index != -1); 793a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Aux.size() == 1 && 794801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol must contain one aux symbol!"); 795a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Aux[0].AuxType == ATWeakExternal && 796801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol's aux symbol must be a Weak External!"); 797a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.TagIndex = coff_symbol->Other->Index; 798801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 799801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 800801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 801801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Assign file offsets to COFF object file structures. 802801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 803801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer unsigned offset = 0; 804801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 805801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::HeaderSize; 806a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer offset += COFF::SectionSize * Header.NumberOfSections; 807801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 808801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_iterator i = Asm.begin(), 809801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer e = Asm.end(); 810801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer i != e; i++) { 8114cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSection *Sec = SectionMap[&i->getSection()]; 812801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 813a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Sec->Number == -1) 814a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer continue; 815a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 81628ca86aa19fe2a5493573164ef0c2c54542ed9daMichael J. Spencer Sec->Header.SizeOfRawData = Layout.getSectionAddressSize(i); 817801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 818a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (IsPhysicalSection(Sec)) { 819801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.PointerToRawData = offset; 820801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 821801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += Sec->Header.SizeOfRawData; 822801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 823801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 824801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (Sec->Relocations.size() > 0) { 825801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfRelocations = Sec->Relocations.size(); 826801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.PointerToRelocations = offset; 827801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 828801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::RelocationSize * Sec->Relocations.size(); 829801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 830801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (relocations::iterator cr = Sec->Relocations.begin(), 831801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer er = Sec->Relocations.end(); 832a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer cr != er; ++cr) { 833a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert((*cr).Symb->Index != -1); 834801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer (*cr).Data.SymbolTableIndex = (*cr).Symb->Index; 835801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 836801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 837801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 838a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(Sec->Symbol->Aux.size() == 1 839a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer && "Section's symbol must have one aux!"); 840a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer AuxSymbol &Aux = Sec->Symbol->Aux[0]; 841801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Aux.AuxType == ATSectionDefinition && 842801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section's symbol's aux symbol must be a Section Definition!"); 843801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.Length = Sec->Header.SizeOfRawData; 844801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.NumberOfRelocations = 845801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfRelocations; 846801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.NumberOfLinenumbers = 847801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfLineNumbers; 848801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 849801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 850801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.PointerToSymbolTable = offset; 851801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 852ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer Header.TimeDateStamp = sys::TimeValue::now().toEpochTime(); 853ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer 854801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Write it all to disk... 855801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteFileHeader(Header); 856801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 857801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer { 858801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sections::iterator i, ie; 859801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler::const_iterator j, je; 860801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 861801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (i = Sections.begin(), ie = Sections.end(); i != ie; i++) 862a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if ((*i)->Number != -1) 863a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer WriteSectionHeader((*i)->Header); 864801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 865801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (i = Sections.begin(), ie = Sections.end(), 866801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer j = Asm.begin(), je = Asm.end(); 867a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer (i != ie) && (j != je); ++i, ++j) { 868a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 869a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if ((*i)->Number == -1) 870a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer continue; 871a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 872801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((*i)->Header.PointerToRawData != 0) { 873801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == (*i)->Header.PointerToRawData && 874801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRawData is insane!"); 875801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 876801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Asm.WriteSectionData(j, Layout, this); 877801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 878801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 879801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((*i)->Relocations.size() > 0) { 880801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == (*i)->Header.PointerToRelocations && 881801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRelocations is insane!"); 882801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 883801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (relocations::const_iterator k = (*i)->Relocations.begin(), 884801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ke = (*i)->Relocations.end(); 885801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer k != ke; k++) { 886801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteRelocation(k->Data); 887801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 888801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } else 889801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert((*i)->Header.PointerToRelocations == 0 && 890801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRelocations is insane!"); 891801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 892801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 893801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 894801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == Header.PointerToSymbolTable && 895801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Header::PointerToSymbolTable is insane!"); 896801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 897801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) 898a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if ((*i)->Index != -1) 899a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer WriteSymbol(*i); 900801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 901801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer OS.write((char const *)&Strings.Data.front(), Strings.Data.size()); 902b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 903b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 904b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//------------------------------------------------------------------------------ 905b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// WinCOFFObjectWriter factory function 906b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 907b162290e39afd49d4c7d342333b331bc96232720Chris Lattnernamespace llvm { 908da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer MCObjectWriter *createWinCOFFObjectWriter(raw_ostream &OS, bool is64Bit) { 909da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer return new WinCOFFObjectWriter(OS, is64Bit); 910b162290e39afd49d4c7d342333b331bc96232720Chris Lattner } 911933304ef0c3ec18c23d0b385c2117a6eae790430Michael J. Spencer} 912