WinCOFFObjectWriter.cpp revision 0d64632c9e8a2632b8804bcc3fbc3523588862a7
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 341f6efa3996dd1929fbc129203ce5009b620e6969Michael J. Spencer#include "llvm/Support/TimeValue.h" 35ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer 368c3fee59038d8fd98db2a01b6a309a8941a16a3fEvan Cheng#include "../Target/X86/MCTargetDesc/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 17385f2ecc697a8ca6c8cf08093054cbbb9d2060ccfRafael Espindola void ExecutePostLayoutBinding(MCAssembler &Asm, const MCAsmLayout &Layout); 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 1828f413fa9c00dbaea000ddfe265ab5edd285ea3abRafael Espindola void WriteObject(MCAssembler &Asm, const MCAsmLayout &Layout); 183801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 184801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 185801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 186801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint32_le(void *Data, uint32_t const &Value) { 187801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 188801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0x000000FF) >> 0; 189801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[1] = (Value & 0x0000FF00) >> 8; 190801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[2] = (Value & 0x00FF0000) >> 16; 191801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[3] = (Value & 0xFF000000) >> 24; 192801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 193801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 194801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint16_le(void *Data, uint16_t const &Value) { 195801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 196801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0x00FF) >> 0; 197801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[1] = (Value & 0xFF00) >> 8; 198801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 199801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 200801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint8_le(void *Data, uint8_t const &Value) { 201801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 202801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0xFF) >> 0; 203801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 204801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 205801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 206801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// Symbol class implementation 207801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 208a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. SpencerCOFFSymbol::COFFSymbol(llvm::StringRef name) 209a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer : Name(name.begin(), name.end()) 210a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Other(NULL) 211a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Section(NULL) 212a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Relocations(0) 213a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , MCData(NULL) { 214801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Data, 0, sizeof(Data)); 215801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 216b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 217801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t COFFSymbol::size() const { 218801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return COFF::SymbolSize + (Data.NumberOfAuxSymbols * COFF::SymbolSize); 219b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 220b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 221801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// In the case that the name does not fit within 8 bytes, the offset 222801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// into the string table is stored in the last 4 bytes instead, leaving 223801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// the first 4 bytes as 0. 224801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid COFFSymbol::set_name_offset(uint32_t Offset) { 225801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(Data.Name + 0, 0); 226801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(Data.Name + 4, Offset); 227801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 228801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 229a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer/// logic to decide if the symbol should be reported in the symbol table 230a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerbool COFFSymbol::should_keep() const { 231a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // no section means its external, keep it 232a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Section == NULL) 233a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 234a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 235a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if it has relocations pointing at it, keep it 236a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Relocations > 0) { 237a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(Section->Number != -1 && "Sections with relocations must be real!"); 238a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 239a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } 240a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 241a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if the section its in is being droped, drop it 242a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Section->Number == -1) 243a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return false; 244a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 245a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if it is the section symbol, keep it 246a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Section->Symbol == this) 247a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 248a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 249a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // if its temporary, drop it 250a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (MCData && MCData->getSymbol().isTemporary()) 251a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return false; 252a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 253a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // otherwise, keep it 254a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return true; 255a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 256a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 257801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 258801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// Section class implementation 259801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 260a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. SpencerCOFFSection::COFFSection(llvm::StringRef name) 261a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer : Name(name) 262a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , MCData(NULL) 263a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer , Symbol(NULL) { 264801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Header, 0, sizeof(Header)); 265801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 266801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 267801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t COFFSection::size() { 268801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return COFF::SectionSize; 269801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 270801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 271801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 272801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// StringTable class implementation 273801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 274801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// Write the length of the string table into Data. 275801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// The length of the string table includes uint32 length header. 276801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid StringTable::update_length() { 277801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(&Data.front(), Data.size()); 278801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 279801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 280801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerStringTable::StringTable() { 281801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // The string table data begins with the length of the entire string table 282801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // including the length header. Allocate space for this header. 283801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.resize(4); 2840d64632c9e8a2632b8804bcc3fbc3523588862a7Michael J. Spencer update_length(); 285801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 286801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 287801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t StringTable::size() const { 288801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Data.size(); 289801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 290801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 291801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// Add String to the table iff it is not already there. 292801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// @returns the index into the string table where the string is now located. 293801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t StringTable::insert(llvm::StringRef String) { 294801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer map::iterator i = Map.find(String); 295801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 296801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (i != Map.end()) 297801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return i->second; 298801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 299801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Offset = Data.size(); 300801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 301801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Insert string data into string table. 302801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.insert(Data.end(), String.begin(), String.end()); 303801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.push_back('\0'); 304801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 305801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Put a reference to it in the map. 306801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Map[String] = Offset; 307801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 308801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update the internal length field. 309801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer update_length(); 310801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 311801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Offset; 312801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 313801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 314801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 315801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// WinCOFFObjectWriter class implementation 316801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 317da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. SpencerWinCOFFObjectWriter::WinCOFFObjectWriter(raw_ostream &OS, bool is64Bit) 31882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer : MCObjectWriter(OS, true) 31982c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer , Is64Bit(is64Bit) { 320801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Header, 0, sizeof(Header)); 321da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer 32282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Is64Bit ? Header.Machine = COFF::IMAGE_FILE_MACHINE_AMD64 323da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer : Header.Machine = COFF::IMAGE_FILE_MACHINE_I386; 324801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 325801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 326808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin KramerWinCOFFObjectWriter::~WinCOFFObjectWriter() { 327808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer for (symbols::iterator I = Symbols.begin(), E = Symbols.end(); I != E; ++I) 328808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer delete *I; 329808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer for (sections::iterator I = Sections.begin(), E = Sections.end(); I != E; ++I) 330808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer delete *I; 331808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer} 332808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer 3334cee2890a66974af506f2125243114cc14bd5556Michael J. SpencerCOFFSymbol *WinCOFFObjectWriter::createSymbol(StringRef Name) { 334801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return createCOFFEntity<COFFSymbol>(Name, Symbols); 335801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 336801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 3374cee2890a66974af506f2125243114cc14bd5556Michael J. SpencerCOFFSymbol *WinCOFFObjectWriter::GetOrCreateCOFFSymbol(const MCSymbol * Symbol){ 3384cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer symbol_map::iterator i = SymbolMap.find(Symbol); 3394cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer if (i != SymbolMap.end()) 3404cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer return i->second; 3414cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSymbol *RetSymbol 3424cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer = createCOFFEntity<COFFSymbol>(Symbol->getName(), Symbols); 3434cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer SymbolMap[Symbol] = RetSymbol; 3444cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer return RetSymbol; 3454cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer} 3464cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer 347801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSection *WinCOFFObjectWriter::createSection(llvm::StringRef Name) { 348801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return createCOFFEntity<COFFSection>(Name, Sections); 349801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 350801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 351801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// A template used to lookup or create a symbol/section, and initialize it if 352801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// needed. 353801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencertemplate <typename object_t, typename list_t> 354801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerobject_t *WinCOFFObjectWriter::createCOFFEntity(llvm::StringRef Name, 355801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer list_t &List) { 356a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer object_t *Object = new object_t(Name); 357801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 358801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer List.push_back(Object); 359801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 360801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Object; 361801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 362801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 363801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function takes a section data object from the assembler 364801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// and creates the associated COFF section staging object. 365801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::DefineSection(MCSectionData const &SectionData) { 366d47f4a9c982d264e46a6a2fe0f357288768bb5b9Michael J. Spencer assert(SectionData.getSection().getVariant() == MCSection::SV_COFF 367d47f4a9c982d264e46a6a2fe0f357288768bb5b9Michael J. Spencer && "Got non COFF section in the COFF backend!"); 368801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: Not sure how to verify this (at least in a debug build). 369801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionCOFF const &Sec = 370801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static_cast<MCSectionCOFF const &>(SectionData.getSection()); 371801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 372801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *coff_section = createSection(Sec.getSectionName()); 373801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = createSymbol(Sec.getSectionName()); 374801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 375a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_section->Symbol = coff_symbol; 376a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Section = coff_section; 377801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_STATIC; 378801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 379801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // In this case the auxiliary symbol is a Section Definition. 380801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux.resize(1); 381801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&coff_symbol->Aux[0], 0, sizeof(coff_symbol->Aux[0])); 382801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].AuxType = ATSectionDefinition; 383801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.SectionDefinition.Selection = Sec.getSelection(); 384801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 385801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Header.Characteristics = Sec.getCharacteristics(); 386801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 387801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint32_t &Characteristics = coff_section->Header.Characteristics; 388801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch (SectionData.getAlignment()) { 389801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 1: Characteristics |= COFF::IMAGE_SCN_ALIGN_1BYTES; break; 390801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 2: Characteristics |= COFF::IMAGE_SCN_ALIGN_2BYTES; break; 391801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 4: Characteristics |= COFF::IMAGE_SCN_ALIGN_4BYTES; break; 392801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 8: Characteristics |= COFF::IMAGE_SCN_ALIGN_8BYTES; break; 393801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 16: Characteristics |= COFF::IMAGE_SCN_ALIGN_16BYTES; break; 394801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 32: Characteristics |= COFF::IMAGE_SCN_ALIGN_32BYTES; break; 395801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 64: Characteristics |= COFF::IMAGE_SCN_ALIGN_64BYTES; break; 396801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 128: Characteristics |= COFF::IMAGE_SCN_ALIGN_128BYTES; break; 397801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 256: Characteristics |= COFF::IMAGE_SCN_ALIGN_256BYTES; break; 398801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 512: Characteristics |= COFF::IMAGE_SCN_ALIGN_512BYTES; break; 399801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 1024: Characteristics |= COFF::IMAGE_SCN_ALIGN_1024BYTES; break; 400801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 2048: Characteristics |= COFF::IMAGE_SCN_ALIGN_2048BYTES; break; 401801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 4096: Characteristics |= COFF::IMAGE_SCN_ALIGN_4096BYTES; break; 402801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 8192: Characteristics |= COFF::IMAGE_SCN_ALIGN_8192BYTES; break; 403801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer default: 404801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer llvm_unreachable("unsupported section alignment"); 405801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 406801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 407801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Bind internal COFF section to MC section. 408801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->MCData = &SectionData; 4094cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer SectionMap[&SectionData.getSection()] = coff_section; 410801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 411801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 412801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function takes a section data object from the assembler 413801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// and creates the associated COFF symbol staging object. 414801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::DefineSymbol(MCSymbolData const &SymbolData, 415a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer MCAssembler &Assembler) { 4164cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSymbol *coff_symbol = GetOrCreateCOFFSymbol(&SymbolData.getSymbol()); 417801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 418801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.Type = (SymbolData.getFlags() & 0x0000FFFF) >> 0; 419801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = (SymbolData.getFlags() & 0x00FF0000) >> 16; 420801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 4214cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer if (SymbolData.getFlags() & COFF::SF_WeakExternal) { 422801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL; 423801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 4244cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer if (SymbolData.getSymbol().isVariable()) { 4254cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL; 4264cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer const MCExpr *Value = SymbolData.getSymbol().getVariableValue(); 427801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 4284cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer // FIXME: This assert message isn't very good. 4294cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer assert(Value->getKind() == MCExpr::SymbolRef && 4304cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer "Value must be a SymbolRef!"); 431801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 4324cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer const MCSymbolRefExpr *SymbolRef = 4334cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer static_cast<const MCSymbolRefExpr *>(Value); 4344cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer coff_symbol->Other = GetOrCreateCOFFSymbol(&SymbolRef->getSymbol()); 4354cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer } else { 4364cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer std::string WeakName = std::string(".weak.") 4374cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer + SymbolData.getSymbol().getName().str() 4384cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer + ".default"; 4394cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSymbol *WeakDefault = createSymbol(WeakName); 4404cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer WeakDefault->Data.SectionNumber = COFF::IMAGE_SYM_ABSOLUTE; 4414cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer WeakDefault->Data.StorageClass = COFF::IMAGE_SYM_CLASS_EXTERNAL; 4424cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer WeakDefault->Data.Type = 0; 4434cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer WeakDefault->Data.Value = 0; 4444cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer coff_symbol->Other = WeakDefault; 4454cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer } 446801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 447801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Setup the Weak External auxiliary symbol. 448801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux.resize(1); 449801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&coff_symbol->Aux[0], 0, sizeof(coff_symbol->Aux[0])); 450801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].AuxType = ATWeakExternal; 451801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.TagIndex = 0; 452801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.Characteristics = 4534cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY; 4544cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer } 4554cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer 4564cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer // If no storage class was specified in the streamer, define it here. 4574cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer if (coff_symbol->Data.StorageClass == 0) { 4584cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer bool external = SymbolData.isExternal() || (SymbolData.Fragment == NULL); 4594cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer 4604cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer coff_symbol->Data.StorageClass = 4614cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer external ? COFF::IMAGE_SYM_CLASS_EXTERNAL : COFF::IMAGE_SYM_CLASS_STATIC; 462801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 463801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 464a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (SymbolData.Fragment != NULL) 4654cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer coff_symbol->Section = 4664cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer SectionMap[&SymbolData.Fragment->getParent()->getSection()]; 467a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 468801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Bind internal COFF symbol to MC symbol. 469801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->MCData = &SymbolData; 4704cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer SymbolMap[&SymbolData.getSymbol()] = coff_symbol; 471801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 472801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 473a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer/// making a section real involves assigned it a number and putting 474a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer/// name into the string table if needed 475a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencervoid WinCOFFObjectWriter::MakeSectionReal(COFFSection &S, size_t Number) { 476a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (S.Name.size() > COFF::NameSize) { 477a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer size_t StringTableEntry = Strings.insert(S.Name.c_str()); 478a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 479a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // FIXME: Why is this number 999999? This number is never mentioned in the 480a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // spec. I'm assuming this is due to the printed value needing to fit into 481a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // the S.Header.Name field. In which case why not 9999999 (7 9's instead of 482a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // 6)? The spec does not state if this entry should be null terminated in 483a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // this case, and thus this seems to be the best way to do it. I think I 484a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // just solved my own FIXME... 485a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (StringTableEntry > 999999) 486a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer report_fatal_error("COFF string table is greater than 999999 bytes."); 487a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 488a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer std::sprintf(S.Header.Name, "/%d", unsigned(StringTableEntry)); 489a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 490a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer std::memcpy(S.Header.Name, S.Name.c_str(), S.Name.size()); 491a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 492a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Number = Number; 493a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Symbol->Data.SectionNumber = S.Number; 494a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Symbol->Aux[0].Aux.SectionDefinition.Number = S.Number; 495a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 496a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 497a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencervoid WinCOFFObjectWriter::MakeSymbolReal(COFFSymbol &S, size_t Index) { 498a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (S.Name.size() > COFF::NameSize) { 499a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer size_t StringTableEntry = Strings.insert(S.Name.c_str()); 500a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 501a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.set_name_offset(StringTableEntry); 502a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 503a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer std::memcpy(S.Data.Name, S.Name.c_str(), S.Name.size()); 504a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer S.Index = Index; 505a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 506a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 507a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerbool WinCOFFObjectWriter::ExportSection(COFFSection const *S) { 508a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return !S->MCData->getFragmentList().empty(); 509801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 510801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 511801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerbool WinCOFFObjectWriter::ExportSymbol(MCSymbolData const &SymbolData, 512801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler &Asm) { 513801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // This doesn't seem to be right. Strings referred to from the .data section 514801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // need symbols so they can be linked to code in the .text section right? 515801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 516801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // return Asm.isSymbolLinkerVisible (&SymbolData); 517801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 518a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // For now, all non-variable symbols are exported, 519a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // the linker will sort the rest out for us. 5204cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer return SymbolData.isExternal() || !SymbolData.getSymbol().isVariable(); 521a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer} 522a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 523a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencerbool WinCOFFObjectWriter::IsPhysicalSection(COFFSection *S) { 524a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer return (S->Header.Characteristics 525a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) == 0; 526801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 527801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 528801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 529801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// entity writing methods 530801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 531801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteFileHeader(const COFF::header &Header) { 532801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.Machine); 533801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.NumberOfSections); 534801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.TimeDateStamp); 535801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.PointerToSymbolTable); 536801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.NumberOfSymbols); 537801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.SizeOfOptionalHeader); 538801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.Characteristics); 539801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 540801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 541801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteSymbol(const COFFSymbol *S) { 542801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(S->Data.Name, COFF::NameSize)); 543801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S->Data.Value); 544801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S->Data.SectionNumber); 545801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S->Data.Type); 546801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(S->Data.StorageClass); 547801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(S->Data.NumberOfAuxSymbols); 548801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteAuxiliarySymbols(S->Aux); 549801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 550801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 551801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteAuxiliarySymbols( 552801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const COFFSymbol::AuxiliarySymbols &S) { 553801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for(COFFSymbol::AuxiliarySymbols::const_iterator i = S.begin(), e = S.end(); 554801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer i != e; ++i) { 555801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch(i->AuxType) { 556801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATFunctionDefinition: 557801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.TagIndex); 558801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.TotalSize); 559801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.PointerToLinenumber); 560801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.PointerToNextFunction); 561801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.FunctionDefinition.unused)); 562801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 563801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATbfAndefSymbol: 564801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused1)); 565801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.bfAndefSymbol.Linenumber); 566801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused2)); 567801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.bfAndefSymbol.PointerToNextFunction); 568801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused3)); 569801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 570801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATWeakExternal: 571801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.WeakExternal.TagIndex); 572801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.WeakExternal.Characteristics); 573801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.WeakExternal.unused)); 574801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 575801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATFile: 576801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(reinterpret_cast<const char *>(i->Aux.File.FileName), 577801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sizeof(i->Aux.File.FileName))); 578801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 579801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATSectionDefinition: 580801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.SectionDefinition.Length); 581801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.NumberOfRelocations); 582801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.NumberOfLinenumbers); 583801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.SectionDefinition.CheckSum); 584801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.Number); 585801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(i->Aux.SectionDefinition.Selection); 586801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.SectionDefinition.unused)); 587801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 588801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 589801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 590801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 591801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 592801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteSectionHeader(const COFF::section &S) { 593801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(S.Name, COFF::NameSize)); 594801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 595801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.VirtualSize); 596801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.VirtualAddress); 597801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.SizeOfRawData); 598801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToRawData); 599801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToRelocations); 600801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToLineNumbers); 601801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S.NumberOfRelocations); 602801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S.NumberOfLineNumbers); 603801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.Characteristics); 604801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 605801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 606801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteRelocation(const COFF::relocation &R) { 607801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(R.VirtualAddress); 608801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(R.SymbolTableIndex); 609801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(R.Type); 610b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 611b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 612b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//////////////////////////////////////////////////////////////////////////////// 613b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// MCObjectWriter interface implementations 614b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 61585f2ecc697a8ca6c8cf08093054cbbb9d2060ccfRafael Espindolavoid WinCOFFObjectWriter::ExecutePostLayoutBinding(MCAssembler &Asm, 61685f2ecc697a8ca6c8cf08093054cbbb9d2060ccfRafael Espindola const MCAsmLayout &Layout) { 617801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // "Define" each section & symbol. This creates section & symbol 618a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // entries in the staging area. 619801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 620801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_iterator i = Asm.begin(), e = Asm.end(); i != e; i++) 621801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer DefineSection(*i); 622801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 623801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_symbol_iterator i = Asm.symbol_begin(), 624801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer e = Asm.symbol_end(); i != e; i++) { 625801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (ExportSymbol(*i, Asm)) 626801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer DefineSymbol(*i, Asm); 627801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 628b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 629b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 630b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::RecordRelocation(const MCAssembler &Asm, 631b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCAsmLayout &Layout, 632b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCFragment *Fragment, 633b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCFixup &Fixup, 634b162290e39afd49d4c7d342333b331bc96232720Chris Lattner MCValue Target, 635b162290e39afd49d4c7d342333b331bc96232720Chris Lattner uint64_t &FixedValue) { 636801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Target.getSymA() != NULL && "Relocation must reference a symbol!"); 63782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer 63882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer const MCSymbol *A = &Target.getSymA()->getSymbol(); 63982c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer MCSymbolData &A_SD = Asm.getSymbolData(*A); 640801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 641801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionData const *SectionData = Fragment->getParent(); 642801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 64382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // Mark this symbol as requiring an entry in the symbol table. 6444cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer assert(SectionMap.find(&SectionData->getSection()) != SectionMap.end() && 645801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section must already have been defined in ExecutePostLayoutBinding!"); 6464cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer assert(SymbolMap.find(&A_SD.getSymbol()) != SymbolMap.end() && 647801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol must already have been defined in ExecutePostLayoutBinding!"); 648801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 6494cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSection *coff_section = SectionMap[&SectionData->getSection()]; 6504cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSymbol *coff_symbol = SymbolMap[&A_SD.getSymbol()]; 6513660a847f1820d73847539f3959dc069396f8e44Rafael Espindola const MCSymbolRefExpr *SymA = Target.getSymA(); 6523660a847f1820d73847539f3959dc069396f8e44Rafael Espindola const MCSymbolRefExpr *SymB = Target.getSymB(); 6533660a847f1820d73847539f3959dc069396f8e44Rafael Espindola const bool CrossSection = SymB && 6543660a847f1820d73847539f3959dc069396f8e44Rafael Espindola &SymA->getSymbol().getSection() != &SymB->getSymbol().getSection(); 65582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer 65682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer if (Target.getSymB()) { 65782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer const MCSymbol *B = &Target.getSymB()->getSymbol(); 65882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer MCSymbolData &B_SD = Asm.getSymbolData(*B); 659801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 6601ac7fe0f4dae8a9266fa6ff31ea4939ec64a3e5eRafael Espindola // Offset of the symbol in the section 6611ac7fe0f4dae8a9266fa6ff31ea4939ec64a3e5eRafael Espindola int64_t a = Layout.getSymbolOffset(&B_SD); 66282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer 6631ac7fe0f4dae8a9266fa6ff31ea4939ec64a3e5eRafael Espindola // Ofeset of the relocation in the section 6641ac7fe0f4dae8a9266fa6ff31ea4939ec64a3e5eRafael Espindola int64_t b = Layout.getFragmentOffset(Fragment) + Fixup.getOffset(); 6651ac7fe0f4dae8a9266fa6ff31ea4939ec64a3e5eRafael Espindola 6661ac7fe0f4dae8a9266fa6ff31ea4939ec64a3e5eRafael Espindola FixedValue = b - a; 66782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // In the case where we have SymbA and SymB, we just need to store the delta 66882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // between the two symbols. Update FixedValue to account for the delta, and 66982c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // skip recording the relocation. 6703660a847f1820d73847539f3959dc069396f8e44Rafael Espindola if (!CrossSection) 6713660a847f1820d73847539f3959dc069396f8e44Rafael Espindola return; 67282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer } else { 67382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer FixedValue = Target.getConstant(); 67482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer } 675801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 676801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFRelocation Reloc; 677801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 678425f634917542d7f09c189e2eb130752c6a12d2cDaniel Dunbar Reloc.Data.SymbolTableIndex = 0; 679801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.VirtualAddress = Layout.getFragmentOffset(Fragment); 680a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 681ea1104a4c376634ed8eb693f6c71e0ac51074949Michael J. Spencer // Turn relocations for temporary symbols into section relocations. 6823660a847f1820d73847539f3959dc069396f8e44Rafael Espindola if (coff_symbol->MCData->getSymbol().isTemporary() || CrossSection) { 683a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Reloc.Symb = coff_symbol->Section->Symbol; 684eb6e77f8cccd14cdba995ff8231f2c9faea9bfccMichael J. Spencer FixedValue += Layout.getFragmentOffset(coff_symbol->MCData->Fragment) 685eb6e77f8cccd14cdba995ff8231f2c9faea9bfccMichael J. Spencer + coff_symbol->MCData->getOffset(); 686a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 687a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Reloc.Symb = coff_symbol; 688a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 689a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer ++Reloc.Symb->Relocations; 690801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 691801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.VirtualAddress += Fixup.getOffset(); 692801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 6933660a847f1820d73847539f3959dc069396f8e44Rafael Espindola unsigned FixupKind = Fixup.getKind(); 6943660a847f1820d73847539f3959dc069396f8e44Rafael Espindola 6953660a847f1820d73847539f3959dc069396f8e44Rafael Espindola if (CrossSection) 6963660a847f1820d73847539f3959dc069396f8e44Rafael Espindola FixupKind = FK_PCRel_4; 6973660a847f1820d73847539f3959dc069396f8e44Rafael Espindola 6983660a847f1820d73847539f3959dc069396f8e44Rafael Espindola switch (FixupKind) { 699e04ed7e45f194f14a7b28bbf3f55694d8e2bcf80Rafael Espindola case FK_PCRel_4: 70082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case X86::reloc_riprel_4byte: 70182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case X86::reloc_riprel_4byte_movq_load: 70282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Reloc.Data.Type = Is64Bit ? COFF::IMAGE_REL_AMD64_REL32 70382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer : COFF::IMAGE_REL_I386_REL32; 70482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // FIXME: Can anyone explain what this does other than adjust for the size 70582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer // of the offset? 70682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer FixedValue += 4; 70782c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer break; 70882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case FK_Data_4: 709a8c02c3bdd68e65d14fb6b0d56989663754059b0Rafael Espindola case X86::reloc_signed_4byte: 71082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Reloc.Data.Type = Is64Bit ? COFF::IMAGE_REL_AMD64_ADDR32 71182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer : COFF::IMAGE_REL_I386_DIR32; 71282c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer break; 71382c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer case FK_Data_8: 71482c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer if (Is64Bit) 71582c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer Reloc.Data.Type = COFF::IMAGE_REL_AMD64_ADDR64; 71682c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer else 717da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer llvm_unreachable("unsupported relocation type"); 71882c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer break; 71982c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer default: 72082c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer llvm_unreachable("unsupported relocation type"); 72182c84fdd23669d23c02a07498c83b83702979829Michael J. Spencer } 722801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 723801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Relocations.push_back(Reloc); 724b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 725b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 7268f413fa9c00dbaea000ddfe265ab5edd285ea3abRafael Espindolavoid WinCOFFObjectWriter::WriteObject(MCAssembler &Asm, 727b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCAsmLayout &Layout) { 728801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Assign symbol and section indexes and offsets. 729a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Header.NumberOfSections = 0; 730a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 731a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer for (sections::iterator i = Sections.begin(), 732a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer e = Sections.end(); i != e; i++) { 73385f2ecc697a8ca6c8cf08093054cbbb9d2060ccfRafael Espindola if (Layout.getSectionAddressSize((*i)->MCData) > 0) { 734a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer MakeSectionReal(**i, ++Header.NumberOfSections); 735a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else { 736a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer (*i)->Number = -1; 737a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } 738a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } 739801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 740801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.NumberOfSymbols = 0; 741801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 742801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) { 743801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = *i; 744801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSymbolData const *SymbolData = coff_symbol->MCData; 745801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 746801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update section number & offset for symbols that have them. 747801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((SymbolData != NULL) && (SymbolData->Fragment != NULL)) { 748a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Section != NULL); 749801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 750a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Data.SectionNumber = coff_symbol->Section->Number; 751237f8fe5df628065874b8590b364d04dfc2686fdMichael J. Spencer coff_symbol->Data.Value = Layout.getFragmentOffset(SymbolData->Fragment) 752237f8fe5df628065874b8590b364d04dfc2686fdMichael J. Spencer + SymbolData->Offset; 753801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 754801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 755a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (coff_symbol->should_keep()) { 756a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer MakeSymbolReal(*coff_symbol, Header.NumberOfSymbols++); 757a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 758a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer // Update auxiliary symbol info. 759a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Data.NumberOfAuxSymbols = coff_symbol->Aux.size(); 760a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer Header.NumberOfSymbols += coff_symbol->Data.NumberOfAuxSymbols; 761a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer } else 762a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Index = -1; 763801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 764801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 765801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Fixup weak external references. 766801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) { 767a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer COFFSymbol *coff_symbol = *i; 768a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (coff_symbol->Other != NULL) { 769a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Index != -1); 770a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Aux.size() == 1 && 771801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol must contain one aux symbol!"); 772a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(coff_symbol->Aux[0].AuxType == ATWeakExternal && 773801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol's aux symbol must be a Weak External!"); 774a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.TagIndex = coff_symbol->Other->Index; 775801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 776801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 777801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 778801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Assign file offsets to COFF object file structures. 779801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 780801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer unsigned offset = 0; 781801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 782801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::HeaderSize; 783a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer offset += COFF::SectionSize * Header.NumberOfSections; 784801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 785801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_iterator i = Asm.begin(), 786801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer e = Asm.end(); 787801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer i != e; i++) { 7884cee2890a66974af506f2125243114cc14bd5556Michael J. Spencer COFFSection *Sec = SectionMap[&i->getSection()]; 789801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 790a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (Sec->Number == -1) 791a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer continue; 792a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 79328ca86aa19fe2a5493573164ef0c2c54542ed9daMichael J. Spencer Sec->Header.SizeOfRawData = Layout.getSectionAddressSize(i); 794801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 795a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if (IsPhysicalSection(Sec)) { 796801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.PointerToRawData = offset; 797801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 798801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += Sec->Header.SizeOfRawData; 799801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 800801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 801801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (Sec->Relocations.size() > 0) { 802801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfRelocations = Sec->Relocations.size(); 803801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.PointerToRelocations = offset; 804801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 805801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::RelocationSize * Sec->Relocations.size(); 806801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 807801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (relocations::iterator cr = Sec->Relocations.begin(), 808801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer er = Sec->Relocations.end(); 809a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer cr != er; ++cr) { 810a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert((*cr).Symb->Index != -1); 811801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer (*cr).Data.SymbolTableIndex = (*cr).Symb->Index; 812801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 813801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 814801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 815a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer assert(Sec->Symbol->Aux.size() == 1 816a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer && "Section's symbol must have one aux!"); 817a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer AuxSymbol &Aux = Sec->Symbol->Aux[0]; 818801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Aux.AuxType == ATSectionDefinition && 819801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section's symbol's aux symbol must be a Section Definition!"); 820801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.Length = Sec->Header.SizeOfRawData; 821801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.NumberOfRelocations = 822801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfRelocations; 823801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.NumberOfLinenumbers = 824801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfLineNumbers; 825801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 826801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 827801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.PointerToSymbolTable = offset; 828801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 829ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer Header.TimeDateStamp = sys::TimeValue::now().toEpochTime(); 830ab3de49c48bd3282421ce24323fb6b868a3da6ccMichael J. Spencer 831801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Write it all to disk... 832801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteFileHeader(Header); 833801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 834801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer { 835801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sections::iterator i, ie; 836801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler::const_iterator j, je; 837801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 838801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (i = Sections.begin(), ie = Sections.end(); i != ie; i++) 839a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if ((*i)->Number != -1) 840a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer WriteSectionHeader((*i)->Header); 841801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 842801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (i = Sections.begin(), ie = Sections.end(), 843801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer j = Asm.begin(), je = Asm.end(); 844a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer (i != ie) && (j != je); ++i, ++j) { 845a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 846a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if ((*i)->Number == -1) 847a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer continue; 848a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer 849801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((*i)->Header.PointerToRawData != 0) { 850801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == (*i)->Header.PointerToRawData && 851801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRawData is insane!"); 852801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 8535d2477cecf53bef911f57423a5cecb743d4286faDaniel Dunbar Asm.WriteSectionData(j, Layout); 854801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 855801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 856801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((*i)->Relocations.size() > 0) { 857801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == (*i)->Header.PointerToRelocations && 858801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRelocations is insane!"); 859801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 860801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (relocations::const_iterator k = (*i)->Relocations.begin(), 861801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ke = (*i)->Relocations.end(); 862801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer k != ke; k++) { 863801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteRelocation(k->Data); 864801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 865801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } else 866801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert((*i)->Header.PointerToRelocations == 0 && 867801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRelocations is insane!"); 868801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 869801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 870801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 871801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == Header.PointerToSymbolTable && 872801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Header::PointerToSymbolTable is insane!"); 873801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 874801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) 875a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer if ((*i)->Index != -1) 876a72d87899bc1bfdb17744aae2545a21b3630d3c1Michael J. Spencer WriteSymbol(*i); 877801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 878801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer OS.write((char const *)&Strings.Data.front(), Strings.Data.size()); 879b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 880b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 881b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//------------------------------------------------------------------------------ 882b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// WinCOFFObjectWriter factory function 883b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 884b162290e39afd49d4c7d342333b331bc96232720Chris Lattnernamespace llvm { 885da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer MCObjectWriter *createWinCOFFObjectWriter(raw_ostream &OS, bool is64Bit) { 886da0bfcdaf95d95a66e306ef6d45f638939272d34Michael J. Spencer return new WinCOFFObjectWriter(OS, is64Bit); 887b162290e39afd49d4c7d342333b331bc96232720Chris Lattner } 888933304ef0c3ec18c23d0b385c2117a6eae790430Michael J. Spencer} 889