WinCOFFObjectWriter.cpp revision 425f634917542d7f09c189e2eb130752c6a12d2c
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 34801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer#include <cstdio> 35801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 36b162290e39afd49d4c7d342333b331bc96232720Chris Lattnerusing namespace llvm; 37b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 38b162290e39afd49d4c7d342333b331bc96232720Chris Lattnernamespace { 39801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencertypedef llvm::SmallString<COFF::NameSize> name; 40801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 41801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerenum AuxiliaryType { 42801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ATFunctionDefinition, 43801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ATbfAndefSymbol, 44801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ATWeakExternal, 45801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ATFile, 46801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ATSectionDefinition 47801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 48801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 49801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstruct AuxSymbol { 50801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer AuxiliaryType AuxType; 51801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::Auxiliary Aux; 52801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 53801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 54801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass COFFSymbol { 55801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 56801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::symbol Data; 57801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 58801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef llvm::SmallVector<AuxSymbol, 1> AuxiliarySymbols; 59801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 60801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer name Name; 61801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Index; 62801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer AuxiliarySymbols Aux; 63801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *Other; 64801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 65801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSymbolData const *MCData; 66801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 67801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol(llvm::StringRef name, size_t index); 68801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t size() const; 69801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void set_name_offset(uint32_t Offset); 70801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 71801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 72801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// This class contains staging data for a COFF relocation entry. 73801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstruct COFFRelocation { 74801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::relocation Data; 75801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *Symb; 76801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 77801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFRelocation() : Symb(NULL) {} 78801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static size_t size() { return COFF::RelocationSize; } 79801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 80801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 81801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencertypedef std::vector<COFFRelocation> relocations; 82801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 83801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass COFFSection { 84801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 85801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::section Header; 86801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 87801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer std::string Name; 88801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Number; 89801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionData const *MCData; 90801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *Symb; 91801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer relocations Relocations; 92801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 93801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection(llvm::StringRef name, size_t Index); 94801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static size_t size(); 95801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 96801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 97801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// This class holds the COFF string table. 98801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass StringTable { 99801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef llvm::StringMap<size_t> map; 100801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer map Map; 101801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 102801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void update_length(); 103801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 104801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer std::vector<char> Data; 105801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 106801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer StringTable(); 107801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t size() const; 108801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t insert(llvm::StringRef String); 109801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 110801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 111801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerclass WinCOFFObjectWriter : public MCObjectWriter { 112801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerpublic: 113801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 114801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef std::vector<COFFSymbol*> symbols; 115801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef std::vector<COFFSection*> sections; 116b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 117801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef StringMap<COFFSymbol *> name_symbol_map; 118801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef StringMap<COFFSection *> name_section_map; 119b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 120801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef DenseMap<MCSymbolData const *, COFFSymbol *> symbol_map; 121801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer typedef DenseMap<MCSectionData const *, COFFSection *> section_map; 122b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 123801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Root level file contents. 124801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::header Header; 125801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sections Sections; 126801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer symbols Symbols; 127801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer StringTable Strings; 128b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 129801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Maps used during object file creation. 130801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer section_map SectionMap; 131801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer symbol_map SymbolMap; 132801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 133801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WinCOFFObjectWriter(raw_ostream &OS); 134808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer ~WinCOFFObjectWriter(); 135801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 136801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *createSymbol(llvm::StringRef Name); 137801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *createSection(llvm::StringRef Name); 138801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 139801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void InitCOFFEntity(COFFSymbol &Symbol); 140801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void InitCOFFEntity(COFFSection &Section); 141801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 142801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer template <typename object_t, typename list_t> 143801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer object_t *createCOFFEntity(llvm::StringRef Name, list_t &List); 144801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 145801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void DefineSection(MCSectionData const &SectionData); 146801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void DefineSymbol(MCSymbolData const &SymbolData, MCAssembler &Assembler); 147801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 148801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer bool ExportSection(COFFSection *S); 149801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer bool ExportSymbol(MCSymbolData const &SymbolData, MCAssembler &Asm); 150801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 151801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Entity writing methods. 152801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 153801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteFileHeader(const COFF::header &Header); 154801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteSymbol(const COFFSymbol *S); 155801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteAuxiliarySymbols(const COFFSymbol::AuxiliarySymbols &S); 156801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteSectionHeader(const COFF::section &S); 157801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteRelocation(const COFF::relocation &R); 158801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 159801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // MCObjectWriter interface implementation. 160801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 161801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void ExecutePostLayoutBinding(MCAssembler &Asm); 162801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 163801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void RecordRelocation(const MCAssembler &Asm, 164801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCAsmLayout &Layout, 165801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCFragment *Fragment, 166801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCFixup &Fixup, 167801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCValue Target, 168801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint64_t &FixedValue); 169801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 170801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer void WriteObject(const MCAssembler &Asm, const MCAsmLayout &Layout); 171801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer}; 172801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 173801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 174801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint32_le(void *Data, uint32_t const &Value) { 175801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 176801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0x000000FF) >> 0; 177801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[1] = (Value & 0x0000FF00) >> 8; 178801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[2] = (Value & 0x00FF0000) >> 16; 179801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[3] = (Value & 0xFF000000) >> 24; 180801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 181801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 182801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint16_le(void *Data, uint16_t const &Value) { 183801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 184801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0x00FF) >> 0; 185801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[1] = (Value & 0xFF00) >> 8; 186801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 187801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 188801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerstatic inline void write_uint8_le(void *Data, uint8_t const &Value) { 189801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data); 190801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Ptr[0] = (Value & 0xFF) >> 0; 191801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 192801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 193801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 194801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// Symbol class implementation 195801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 196801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSymbol::COFFSymbol(llvm::StringRef name, size_t index) 197801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer : Name(name.begin(), name.end()), Index(-1) 198801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer , Other(NULL), MCData(NULL) { 199801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Data, 0, sizeof(Data)); 200801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 201b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 202801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t COFFSymbol::size() const { 203801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return COFF::SymbolSize + (Data.NumberOfAuxSymbols * COFF::SymbolSize); 204b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 205b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 206801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// In the case that the name does not fit within 8 bytes, the offset 207801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// into the string table is stored in the last 4 bytes instead, leaving 208801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// the first 4 bytes as 0. 209801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid COFFSymbol::set_name_offset(uint32_t Offset) { 210801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(Data.Name + 0, 0); 211801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(Data.Name + 4, Offset); 212801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 213801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 214801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 215801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// Section class implementation 216801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 217801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSection::COFFSection(llvm::StringRef name, size_t Index) 218801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer : Name(name), Number(Index + 1) 219801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer , MCData(NULL), Symb(NULL) { 220801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Header, 0, sizeof(Header)); 221801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 222801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 223801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t COFFSection::size() { 224801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return COFF::SectionSize; 225801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 226801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 227801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 228801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// StringTable class implementation 229801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 230801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// Write the length of the string table into Data. 231801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// The length of the string table includes uint32 length header. 232801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid StringTable::update_length() { 233801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer write_uint32_le(&Data.front(), Data.size()); 234801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 235801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 236801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerStringTable::StringTable() { 237801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // The string table data begins with the length of the entire string table 238801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // including the length header. Allocate space for this header. 239801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.resize(4); 240801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 241801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 242801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t StringTable::size() const { 243801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Data.size(); 244801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 245801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 246801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// Add String to the table iff it is not already there. 247801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// @returns the index into the string table where the string is now located. 248801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencersize_t StringTable::insert(llvm::StringRef String) { 249801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer map::iterator i = Map.find(String); 250801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 251801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (i != Map.end()) 252801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return i->second; 253801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 254801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t Offset = Data.size(); 255801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 256801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Insert string data into string table. 257801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.insert(Data.end(), String.begin(), String.end()); 258801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Data.push_back('\0'); 259801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 260801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Put a reference to it in the map. 261801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Map[String] = Offset; 262801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 263801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update the internal length field. 264801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer update_length(); 265801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 266801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Offset; 267801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 268801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 269801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 270801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// WinCOFFObjectWriter class implementation 271801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 272b162290e39afd49d4c7d342333b331bc96232720Chris LattnerWinCOFFObjectWriter::WinCOFFObjectWriter(raw_ostream &OS) 273b162290e39afd49d4c7d342333b331bc96232720Chris Lattner : MCObjectWriter(OS, true) { 274801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&Header, 0, sizeof(Header)); 275801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // TODO: Move magic constant out to COFF.h 276801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.Machine = 0x14C; // x86 277801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 278801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 279808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin KramerWinCOFFObjectWriter::~WinCOFFObjectWriter() { 280808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer for (symbols::iterator I = Symbols.begin(), E = Symbols.end(); I != E; ++I) 281808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer delete *I; 282808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer for (sections::iterator I = Sections.begin(), E = Sections.end(); I != E; ++I) 283808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer delete *I; 284808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer} 285808ecfce6a312625bee5c0f4f9831a0d0ed01b16Benjamin Kramer 286801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSymbol *WinCOFFObjectWriter::createSymbol(llvm::StringRef Name) { 287801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return createCOFFEntity<COFFSymbol>(Name, Symbols); 288801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 289801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 290801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. SpencerCOFFSection *WinCOFFObjectWriter::createSection(llvm::StringRef Name) { 291801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return createCOFFEntity<COFFSection>(Name, Sections); 292801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 293801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 294801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function initializes a symbol by entering its name into the string 295801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// table if it is too long to fit in the symbol table header. 296801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::InitCOFFEntity(COFFSymbol &S) { 297801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (S.Name.size() > COFF::NameSize) { 298801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t StringTableEntry = Strings.insert(S.Name.c_str()); 299801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 300801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer S.set_name_offset(StringTableEntry); 301801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } else 302801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memcpy(S.Data.Name, S.Name.c_str(), S.Name.size()); 303801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 304801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 305801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function initializes a section by entering its name into the string 306801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// table if it is too long to fit in the section table header. 307801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::InitCOFFEntity(COFFSection &S) { 308801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (S.Name.size() > COFF::NameSize) { 309801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer size_t StringTableEntry = Strings.insert(S.Name.c_str()); 310801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 311801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: Why is this number 999999? This number is never mentioned in the 312801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // spec. I'm assuming this is due to the printed value needing to fit into 313801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // the S.Header.Name field. In which case why not 9999999 (7 9's instead of 314801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // 6)? The spec does not state if this entry should be null terminated in 315801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // this case, and thus this seems to be the best way to do it. I think I 316801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // just solved my own FIXME... 317801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (StringTableEntry > 999999) 318801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer report_fatal_error("COFF string table is greater than 999999 bytes."); 319801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 320fd2878c8d0e876e849f795bb3f5d5e2f82aa59bdDouglas Gregor sprintf(S.Header.Name, "/%d", (unsigned)StringTableEntry); 321801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } else 322801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memcpy(S.Header.Name, S.Name.c_str(), S.Name.size()); 323801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 324801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 325801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// A template used to lookup or create a symbol/section, and initialize it if 326801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// needed. 327801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencertemplate <typename object_t, typename list_t> 328801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerobject_t *WinCOFFObjectWriter::createCOFFEntity(llvm::StringRef Name, 329801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer list_t &List) { 330801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer object_t *Object = new object_t(Name, List.size()); 331801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 332801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer InitCOFFEntity(*Object); 333801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 334801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer List.push_back(Object); 335801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 336801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return Object; 337801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 338801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 339801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function takes a section data object from the assembler 340801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// and creates the associated COFF section staging object. 341801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::DefineSection(MCSectionData const &SectionData) { 342801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: Not sure how to verify this (at least in a debug build). 343801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionCOFF const &Sec = 344801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static_cast<MCSectionCOFF const &>(SectionData.getSection()); 345801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 346801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *coff_section = createSection(Sec.getSectionName()); 347801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = createSymbol(Sec.getSectionName()); 348801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 349801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Symb = coff_symbol; 350801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_STATIC; 351801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.SectionNumber = coff_section->Number; 352801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 353801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // In this case the auxiliary symbol is a Section Definition. 354801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux.resize(1); 355801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&coff_symbol->Aux[0], 0, sizeof(coff_symbol->Aux[0])); 356801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].AuxType = ATSectionDefinition; 357801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.SectionDefinition.Number = coff_section->Number; 358801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.SectionDefinition.Selection = Sec.getSelection(); 359801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 360801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Header.Characteristics = Sec.getCharacteristics(); 361801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 362801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer uint32_t &Characteristics = coff_section->Header.Characteristics; 363801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch (SectionData.getAlignment()) { 364801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 1: Characteristics |= COFF::IMAGE_SCN_ALIGN_1BYTES; break; 365801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 2: Characteristics |= COFF::IMAGE_SCN_ALIGN_2BYTES; break; 366801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 4: Characteristics |= COFF::IMAGE_SCN_ALIGN_4BYTES; break; 367801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 8: Characteristics |= COFF::IMAGE_SCN_ALIGN_8BYTES; break; 368801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 16: Characteristics |= COFF::IMAGE_SCN_ALIGN_16BYTES; break; 369801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 32: Characteristics |= COFF::IMAGE_SCN_ALIGN_32BYTES; break; 370801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 64: Characteristics |= COFF::IMAGE_SCN_ALIGN_64BYTES; break; 371801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 128: Characteristics |= COFF::IMAGE_SCN_ALIGN_128BYTES; break; 372801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 256: Characteristics |= COFF::IMAGE_SCN_ALIGN_256BYTES; break; 373801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 512: Characteristics |= COFF::IMAGE_SCN_ALIGN_512BYTES; break; 374801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 1024: Characteristics |= COFF::IMAGE_SCN_ALIGN_1024BYTES; break; 375801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 2048: Characteristics |= COFF::IMAGE_SCN_ALIGN_2048BYTES; break; 376801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 4096: Characteristics |= COFF::IMAGE_SCN_ALIGN_4096BYTES; break; 377801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case 8192: Characteristics |= COFF::IMAGE_SCN_ALIGN_8192BYTES; break; 378801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer default: 379801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer llvm_unreachable("unsupported section alignment"); 380801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 381801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 382801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Bind internal COFF section to MC section. 383801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->MCData = &SectionData; 384801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer SectionMap[&SectionData] = coff_section; 385801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 386801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 387801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// This function takes a section data object from the assembler 388801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer/// and creates the associated COFF symbol staging object. 389801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::DefineSymbol(MCSymbolData const &SymbolData, 390801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler &Assembler) { 391801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = createSymbol(SymbolData.getSymbol().getName()); 392801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 393801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.Type = (SymbolData.getFlags() & 0x0000FFFF) >> 0; 394801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = (SymbolData.getFlags() & 0x00FF0000) >> 16; 395801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 396801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // If no storage class was specified in the streamer, define it here. 397801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (coff_symbol->Data.StorageClass == 0) { 398801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer bool external = SymbolData.isExternal() || (SymbolData.Fragment == NULL); 399801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 400801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = 401801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer external ? COFF::IMAGE_SYM_CLASS_EXTERNAL : COFF::IMAGE_SYM_CLASS_STATIC; 402801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 403801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 404801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (SymbolData.getFlags() & COFF::SF_WeakReference) { 405801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.StorageClass = COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL; 406801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 407801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCExpr *Value = SymbolData.getSymbol().getVariableValue(); 408801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 409801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: This assert message isn't very good. 410801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Value->getKind() == MCExpr::SymbolRef && 411801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Value must be a SymbolRef!"); 412801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 413801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCSymbolRefExpr *SymbolRef = 414801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer static_cast<const MCSymbolRefExpr *>(Value); 415801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 416801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const MCSymbolData &OtherSymbolData = 417801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Assembler.getSymbolData(SymbolRef->getSymbol()); 418801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 419801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // FIXME: This assert message isn't very good. 420801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(SymbolMap.find(&OtherSymbolData) != SymbolMap.end() && 421801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "OtherSymbolData must be in the symbol map!"); 422801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 423801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Other = SymbolMap[&OtherSymbolData]; 424801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 425801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Setup the Weak External auxiliary symbol. 426801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux.resize(1); 427801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer memset(&coff_symbol->Aux[0], 0, sizeof(coff_symbol->Aux[0])); 428801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].AuxType = ATWeakExternal; 429801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.TagIndex = 0; 430801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Aux[0].Aux.WeakExternal.Characteristics = 431801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY; 432801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 433801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 434801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Bind internal COFF symbol to MC symbol. 435801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->MCData = &SymbolData; 436801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer SymbolMap[&SymbolData] = coff_symbol; 437801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 438801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 439801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerbool WinCOFFObjectWriter::ExportSection(COFFSection *S) { 440801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return (S->Header.Characteristics 441801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) == 0; 442801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 443801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 444801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencerbool WinCOFFObjectWriter::ExportSymbol(MCSymbolData const &SymbolData, 445801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler &Asm) { 446801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // This doesn't seem to be right. Strings referred to from the .data section 447801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // need symbols so they can be linked to code in the .text section right? 448801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 449801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // return Asm.isSymbolLinkerVisible (&SymbolData); 450801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 451801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // For now, all symbols are exported, the linker will sort it out for us. 452801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer return true; 453801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 454801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 455801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer//------------------------------------------------------------------------------ 456801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer// entity writing methods 457801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 458801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteFileHeader(const COFF::header &Header) { 459801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.Machine); 460801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.NumberOfSections); 461801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.TimeDateStamp); 462801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.PointerToSymbolTable); 463801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(Header.NumberOfSymbols); 464801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.SizeOfOptionalHeader); 465801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(Header.Characteristics); 466801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 467801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 468801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteSymbol(const COFFSymbol *S) { 469801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(S->Data.Name, COFF::NameSize)); 470801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S->Data.Value); 471801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S->Data.SectionNumber); 472801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S->Data.Type); 473801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(S->Data.StorageClass); 474801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(S->Data.NumberOfAuxSymbols); 475801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteAuxiliarySymbols(S->Aux); 476801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 477801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 478801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteAuxiliarySymbols( 479801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer const COFFSymbol::AuxiliarySymbols &S) { 480801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for(COFFSymbol::AuxiliarySymbols::const_iterator i = S.begin(), e = S.end(); 481801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer i != e; ++i) { 482801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch(i->AuxType) { 483801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATFunctionDefinition: 484801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.TagIndex); 485801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.TotalSize); 486801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.PointerToLinenumber); 487801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.FunctionDefinition.PointerToNextFunction); 488801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.FunctionDefinition.unused)); 489801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 490801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATbfAndefSymbol: 491801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused1)); 492801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.bfAndefSymbol.Linenumber); 493801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused2)); 494801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.bfAndefSymbol.PointerToNextFunction); 495801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.bfAndefSymbol.unused3)); 496801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 497801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATWeakExternal: 498801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.WeakExternal.TagIndex); 499801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.WeakExternal.Characteristics); 500801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.WeakExternal.unused)); 501801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 502801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATFile: 503801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(reinterpret_cast<const char *>(i->Aux.File.FileName), 504801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sizeof(i->Aux.File.FileName))); 505801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 506801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case ATSectionDefinition: 507801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.SectionDefinition.Length); 508801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.NumberOfRelocations); 509801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.NumberOfLinenumbers); 510801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(i->Aux.SectionDefinition.CheckSum); 511801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(i->Aux.SectionDefinition.Number); 512801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Write8(i->Aux.SectionDefinition.Selection); 513801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteZeros(sizeof(i->Aux.SectionDefinition.unused)); 514801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 515801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 516801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 517801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 518801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 519801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteSectionHeader(const COFF::section &S) { 520801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteBytes(StringRef(S.Name, COFF::NameSize)); 521801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 522801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.VirtualSize); 523801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.VirtualAddress); 524801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.SizeOfRawData); 525801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToRawData); 526801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToRelocations); 527801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.PointerToLineNumbers); 528801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S.NumberOfRelocations); 529801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(S.NumberOfLineNumbers); 530801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(S.Characteristics); 531801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer} 532801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 533801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencervoid WinCOFFObjectWriter::WriteRelocation(const COFF::relocation &R) { 534801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(R.VirtualAddress); 535801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE32(R.SymbolTableIndex); 536801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteLE16(R.Type); 537b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 538b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 539b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//////////////////////////////////////////////////////////////////////////////// 540b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// MCObjectWriter interface implementations 541b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 542b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::ExecutePostLayoutBinding(MCAssembler &Asm) { 543801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // "Define" each section & symbol. This creates section & symbol 544801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // entries in the staging area and gives them their final indexes. 545801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 546801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_iterator i = Asm.begin(), e = Asm.end(); i != e; i++) 547801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer DefineSection(*i); 548801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 549801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_symbol_iterator i = Asm.symbol_begin(), 550801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer e = Asm.symbol_end(); i != e; i++) { 551801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (ExportSymbol(*i, Asm)) 552801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer DefineSymbol(*i, Asm); 553801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 554b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 555b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 556b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::RecordRelocation(const MCAssembler &Asm, 557b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCAsmLayout &Layout, 558b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCFragment *Fragment, 559b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCFixup &Fixup, 560b162290e39afd49d4c7d342333b331bc96232720Chris Lattner MCValue Target, 561b162290e39afd49d4c7d342333b331bc96232720Chris Lattner uint64_t &FixedValue) { 562801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Target.getSymA() != NULL && "Relocation must reference a symbol!"); 563801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Target.getSymB() == NULL && 564801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Relocation must reference only one symbol!"); 565801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 566801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSectionData const *SectionData = Fragment->getParent(); 567801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSymbolData const *SymbolData = 568801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer &Asm.getSymbolData(Target.getSymA()->getSymbol()); 569801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 570801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(SectionMap.find(SectionData) != SectionMap.end() && 571801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section must already have been defined in ExecutePostLayoutBinding!"); 572801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(SymbolMap.find(SymbolData) != SymbolMap.end() && 573801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol must already have been defined in ExecutePostLayoutBinding!"); 574801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 575801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *coff_section = SectionMap[SectionData]; 576801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = SymbolMap[SymbolData]; 577801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 578801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer FixedValue = Target.getConstant(); 579801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 580801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFRelocation Reloc; 581801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 582425f634917542d7f09c189e2eb130752c6a12d2cDaniel Dunbar Reloc.Data.SymbolTableIndex = 0; 583801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.VirtualAddress = Layout.getFragmentOffset(Fragment); 584801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Symb = coff_symbol; 585801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 586801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.VirtualAddress += Fixup.getOffset(); 587801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 588801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer switch (Fixup.getKind()) { 589801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case FirstTargetFixupKind: // reloc_pcrel_4byte 590801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.Type = COFF::IMAGE_REL_I386_REL32; 591801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer FixedValue += 4; 592801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 593801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer case FK_Data_4: 594801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Reloc.Data.Type = COFF::IMAGE_REL_I386_DIR32; 595801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer break; 596801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer default: 597801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer llvm_unreachable("unsupported relocation type"); 598801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 599801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 600801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_section->Relocations.push_back(Reloc); 601b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 602b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 603b162290e39afd49d4c7d342333b331bc96232720Chris Lattnervoid WinCOFFObjectWriter::WriteObject(const MCAssembler &Asm, 604b162290e39afd49d4c7d342333b331bc96232720Chris Lattner const MCAsmLayout &Layout) { 605801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Assign symbol and section indexes and offsets. 606801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 607801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.NumberOfSymbols = 0; 608801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 609801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) { 610801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *coff_symbol = *i; 611801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCSymbolData const *SymbolData = coff_symbol->MCData; 612801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 613801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Index = Header.NumberOfSymbols++; 614801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 615801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update section number & offset for symbols that have them. 616801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((SymbolData != NULL) && (SymbolData->Fragment != NULL)) { 617801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *coff_section = SectionMap[SymbolData->Fragment->getParent()]; 618801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 619801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.SectionNumber = coff_section->Number; 620801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.Value = Layout.getFragmentOffset(SymbolData->Fragment); 621801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 622801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 623801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Update auxiliary symbol info. 624801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer coff_symbol->Data.NumberOfAuxSymbols = coff_symbol->Aux.size(); 625801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.NumberOfSymbols += coff_symbol->Data.NumberOfAuxSymbols; 626801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 627801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 628801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Fixup weak external references. 629801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) { 630801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSymbol *symb = *i; 631801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 632801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (symb->Other != NULL) { 633801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(symb->Aux.size() == 1 && 634801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol must contain one aux symbol!"); 635801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(symb->Aux[0].AuxType == ATWeakExternal && 636801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Symbol's aux symbol must be a Weak External!"); 637801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer symb->Aux[0].Aux.WeakExternal.TagIndex = symb->Other->Index; 638801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 639801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 640801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 641801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Assign file offsets to COFF object file structures. 642801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 643801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer unsigned offset = 0; 644801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 645801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::HeaderSize; 646801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::SectionSize * Asm.size(); 647801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 648801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.NumberOfSections = Sections.size(); 649801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 650801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (MCAssembler::const_iterator i = Asm.begin(), 651801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer e = Asm.end(); 652801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer i != e; i++) { 653801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer COFFSection *Sec = SectionMap[i]; 654801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 655801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.SizeOfRawData = Layout.getSectionFileSize(i); 656801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 657801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (ExportSection(Sec)) { 658801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.PointerToRawData = offset; 659801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 660801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += Sec->Header.SizeOfRawData; 661801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 662801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 663801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if (Sec->Relocations.size() > 0) { 664801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfRelocations = Sec->Relocations.size(); 665801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.PointerToRelocations = offset; 666801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 667801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer offset += COFF::RelocationSize * Sec->Relocations.size(); 668801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 669801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (relocations::iterator cr = Sec->Relocations.begin(), 670801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer er = Sec->Relocations.end(); 671801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer cr != er; cr++) { 672801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer (*cr).Data.SymbolTableIndex = (*cr).Symb->Index; 673801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 674801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 675801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 676801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Sec->Symb->Aux.size() == 1 && "Section's symbol must have one aux!"); 677801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer AuxSymbol &Aux = Sec->Symb->Aux[0]; 678801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(Aux.AuxType == ATSectionDefinition && 679801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section's symbol's aux symbol must be a Section Definition!"); 680801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.Length = Sec->Header.SizeOfRawData; 681801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.NumberOfRelocations = 682801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfRelocations; 683801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Aux.Aux.SectionDefinition.NumberOfLinenumbers = 684801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Sec->Header.NumberOfLineNumbers; 685801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 686801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 687801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Header.PointerToSymbolTable = offset; 688801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 689801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer // Write it all to disk... 690801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteFileHeader(Header); 691801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 692801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer { 693801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer sections::iterator i, ie; 694801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer MCAssembler::const_iterator j, je; 695801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 696801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (i = Sections.begin(), ie = Sections.end(); i != ie; i++) 697801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteSectionHeader((*i)->Header); 698801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 699801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (i = Sections.begin(), ie = Sections.end(), 700801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer j = Asm.begin(), je = Asm.end(); 701801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer (i != ie) && (j != je); i++, j++) { 702801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((*i)->Header.PointerToRawData != 0) { 703801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == (*i)->Header.PointerToRawData && 704801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRawData is insane!"); 705801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 706801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer Asm.WriteSectionData(j, Layout, this); 707801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 708801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 709801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer if ((*i)->Relocations.size() > 0) { 710801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == (*i)->Header.PointerToRelocations && 711801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRelocations is insane!"); 712801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 713801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (relocations::const_iterator k = (*i)->Relocations.begin(), 714801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer ke = (*i)->Relocations.end(); 715801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer k != ke; k++) { 716801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteRelocation(k->Data); 717801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 718801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } else 719801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert((*i)->Header.PointerToRelocations == 0 && 720801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Section::PointerToRelocations is insane!"); 721801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 722801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer } 723801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 724801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer assert(OS.tell() == Header.PointerToSymbolTable && 725801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer "Header::PointerToSymbolTable is insane!"); 726801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 727801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer for (symbols::iterator i = Symbols.begin(), e = Symbols.end(); i != e; i++) 728801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer WriteSymbol(*i); 729801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer 730801a3591161789e9716b0ec519f0f950b2d0c2acMichael J. Spencer OS.write((char const *)&Strings.Data.front(), Strings.Data.size()); 731b162290e39afd49d4c7d342333b331bc96232720Chris Lattner} 732b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 733b162290e39afd49d4c7d342333b331bc96232720Chris Lattner//------------------------------------------------------------------------------ 734b162290e39afd49d4c7d342333b331bc96232720Chris Lattner// WinCOFFObjectWriter factory function 735b162290e39afd49d4c7d342333b331bc96232720Chris Lattner 736b162290e39afd49d4c7d342333b331bc96232720Chris Lattnernamespace llvm { 737b162290e39afd49d4c7d342333b331bc96232720Chris Lattner MCObjectWriter *createWinCOFFObjectWriter(raw_ostream &OS) { 738b162290e39afd49d4c7d342333b331bc96232720Chris Lattner return new WinCOFFObjectWriter(OS); 739b162290e39afd49d4c7d342333b331bc96232720Chris Lattner } 740933304ef0c3ec18c23d0b385c2117a6eae790430Michael J. Spencer} 741