WinCOFFStreamer.cpp revision bf252bef674985f8a4d2de713acf9280e4d8d10b
1aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo//===-- llvm/MC/WinCOFFStreamer.cpp -----------------------------*- C++ -*-===// 2aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo// 3aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo// The LLVM Compiler Infrastructure 4aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo// 5aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo// This file is distributed under the University of Illinois Open Source 6aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo// License. See LICENSE.TXT for details. 7aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo// 8aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo//===----------------------------------------------------------------------===// 9aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo// 10aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo// This file contains an implementation of a Win32 COFF object file streamer. 11aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo// 12aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo//===----------------------------------------------------------------------===// 13aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo 14aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo#define DEBUG_TYPE "WinCOFFStreamer" 15aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo 163defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com#include "llvm/MC/MCObjectStreamer.h" 178427b4a6d0e6e02beedbb53798272f8ddc39386fAlex Deymo#include "llvm/MC/MCContext.h" 188427b4a6d0e6e02beedbb53798272f8ddc39386fAlex Deymo#include "llvm/MC/MCSection.h" 193defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com#include "llvm/MC/MCSymbol.h" 20fbb40098314ab45efa60667ad7ccae354c4f18daDarin Petkov#include "llvm/MC/MCExpr.h" 213defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com#include "llvm/MC/MCValue.h" 22fbb40098314ab45efa60667ad7ccae354c4f18daDarin Petkov#include "llvm/MC/MCAssembler.h" 238427b4a6d0e6e02beedbb53798272f8ddc39386fAlex Deymo#include "llvm/MC/MCAsmLayout.h" 248427b4a6d0e6e02beedbb53798272f8ddc39386fAlex Deymo#include "llvm/MC/MCCodeEmitter.h" 258427b4a6d0e6e02beedbb53798272f8ddc39386fAlex Deymo#include "llvm/MC/MCSectionCOFF.h" 26be45bef9e283188b00e7def8967f81843669a7f1Chris Sosa#include "llvm/Target/TargetRegistry.h" 275bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold#include "llvm/Target/TargetAsmBackend.h" 283defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com#include "llvm/ADT/StringMap.h" 29ac41a82e4be1be43913292d13d58b5eb2c572f53Alex Deymo 303defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com#include "llvm/Support/COFF.h" 313defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com#include "llvm/Support/Debug.h" 323defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com#include "llvm/Support/ErrorHandling.h" 3310875d90cf67f883ba7c9ed13bc8d706aa8c6fbcAlex Deymo#include "llvm/Support/raw_ostream.h" 343defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.comusing namespace llvm; 353defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com 363defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.comnamespace { 373defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.comclass WinCOFFStreamer : public MCObjectStreamer { 38ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasanpublic: 39ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan MCSymbol const *CurSymbol; 405bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold 41ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan WinCOFFStreamer(MCContext &Context, 425a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov TargetAsmBackend &TAB, 43ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan MCCodeEmitter &CE, 4488b591f24cb3f94f982d7024c2e8ed25c2cc26a2Alex Vakulenko raw_ostream &OS); 455a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov 465a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov void AddCommonSymbol(MCSymbol *Symbol, uint64_t Size, 475a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov unsigned ByteAlignment, bool External); 48610277efc6f7e5239158dfa4bb3b1021804326e0Alex Deymo 49c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold // MCStreamer interface 50856166594771c61973856f563e622ccb7dd48aa1Alex Deymo 51856166594771c61973856f563e622ccb7dd48aa1Alex Deymo virtual void EmitLabel(MCSymbol *Symbol); 52856166594771c61973856f563e622ccb7dd48aa1Alex Deymo virtual void EmitAssemblerFlag(MCAssemblerFlag Flag); 53856166594771c61973856f563e622ccb7dd48aa1Alex Deymo virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value); 54ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute); 55ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue); 565bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold virtual void BeginCOFFSymbolDef(MCSymbol const *Symbol); 57ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan virtual void EmitCOFFSymbolStorageClass(int StorageClass); 58d04f8e24716d5acca6a7d116b63851adc1506845Gilad Arnold virtual void EmitCOFFSymbolType(int Type); 59856166594771c61973856f563e622ccb7dd48aa1Alex Deymo virtual void EndCOFFSymbolDef(); 605a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value); 615a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size, 62610277efc6f7e5239158dfa4bb3b1021804326e0Alex Deymo unsigned ByteAlignment); 63856166594771c61973856f563e622ccb7dd48aa1Alex Deymo virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size); 64856166594771c61973856f563e622ccb7dd48aa1Alex Deymo virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol, 65856166594771c61973856f563e622ccb7dd48aa1Alex Deymo unsigned Size,unsigned ByteAlignment); 66856166594771c61973856f563e622ccb7dd48aa1Alex Deymo virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol, 67856166594771c61973856f563e622ccb7dd48aa1Alex Deymo uint64_t Size, unsigned ByteAlignment); 68856166594771c61973856f563e622ccb7dd48aa1Alex Deymo virtual void EmitBytes(StringRef Data, unsigned AddrSpace); 695a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov virtual void EmitValue(const MCExpr *Value, unsigned Size, 705a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov unsigned AddrSpace); 71ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan virtual void EmitGPRel32Value(const MCExpr *Value); 725bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value, 7349d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov unsigned ValueSize, unsigned MaxBytesToEmit); 74c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold virtual void EmitCodeAlignment(unsigned ByteAlignment, 75c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold unsigned MaxBytesToEmit); 763defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com virtual void EmitValueToOffset(const MCExpr *Offset, unsigned char Value); 773defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com virtual void EmitFileDirective(StringRef Filename); 78c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold virtual void EmitDwarfFileDirective(unsigned FileNo,StringRef Filename); 79c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold virtual void EmitInstruction(const MCInst &Instruction); 803defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com virtual void Finish(); 81ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan}; 82ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan} // end anonymous namespace. 83ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 84ae4697c073b84b260990a141acd53c6806da0708Jay SrinivasanWinCOFFStreamer::WinCOFFStreamer(MCContext &Context, 853defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com TargetAsmBackend &TAB, 8649d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov MCCodeEmitter &CE, 87a4a8a8ccc2d9e0285728ed247b43f09433e63323Darin Petkov raw_ostream &OS) 883defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com : MCObjectStreamer(Context, TAB, OS, &CE) 893defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com , CurSymbol(NULL) { 903defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com} 913defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com 9219a45f0eda0917b7788b925b501e774208474fdeGilad Arnoldvoid WinCOFFStreamer::AddCommonSymbol(MCSymbol *Symbol, uint64_t Size, 9319a45f0eda0917b7788b925b501e774208474fdeGilad Arnold unsigned ByteAlignment, bool External) { 943defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com assert(!Symbol->isInSection() && "Symbol must not already have a section!"); 9519a45f0eda0917b7788b925b501e774208474fdeGilad Arnold 9619a45f0eda0917b7788b925b501e774208474fdeGilad Arnold std::string SectionName(".bss$linkonce"); 9719a45f0eda0917b7788b925b501e774208474fdeGilad Arnold SectionName.append(Symbol->getName().begin(), Symbol->getName().end()); 9819a45f0eda0917b7788b925b501e774208474fdeGilad Arnold 9919a45f0eda0917b7788b925b501e774208474fdeGilad Arnold MCSymbolData &SymbolData = getAssembler().getOrCreateSymbolData(*Symbol); 1003defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com 101d2779df63aaad8b65fc5d4badee7dbc9bed7f2b6Alex Vakulenko unsigned Characteristics = 1023defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com COFF::IMAGE_SCN_LNK_COMDAT | 103ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA | 1045a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov COFF::IMAGE_SCN_MEM_READ | 105c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold COFF::IMAGE_SCN_MEM_WRITE; 1065a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov 1075a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov int Selection = COFF::IMAGE_COMDAT_SELECT_LARGEST; 1085a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov 109ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan const MCSection *Section = MCStreamer::getContext().getCOFFSection( 1105a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov SectionName, Characteristics, Selection, SectionKind::getBSS()); 1115bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold 1125a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov MCSectionData &SectionData = getAssembler().getOrCreateSectionData(*Section); 113ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 114ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan if (SectionData.getAlignment() < ByteAlignment) 115ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan SectionData.setAlignment(ByteAlignment); 116db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasan 117ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan SymbolData.setExternal(External); 118ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 1195bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold Symbol->setSection(*Section); 120ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 121ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan if (ByteAlignment != 1) 122ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan new MCAlignFragment(ByteAlignment, 0, 0, ByteAlignment, &SectionData); 1233defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com 1243defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com SymbolData.setFragment(new MCFillFragment(0, 0, Size, &SectionData)); 125ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan} 126d315dc7f336ceff8c1648ccd1a199ebb8c0a5a84Darin Petkov 127c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold// MCStreamer interface 128d315dc7f336ceff8c1648ccd1a199ebb8c0a5a84Darin Petkov 129d315dc7f336ceff8c1648ccd1a199ebb8c0a5a84Darin Petkovvoid WinCOFFStreamer::EmitLabel(MCSymbol *Symbol) { 130d315dc7f336ceff8c1648ccd1a199ebb8c0a5a84Darin Petkov // TODO: This is copied almost exactly from the MachOStreamer. Consider 131ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan // merging into MCObjectStreamer? 132d315dc7f336ceff8c1648ccd1a199ebb8c0a5a84Darin Petkov assert(Symbol->isUndefined() && "Cannot define a symbol twice!"); 133d315dc7f336ceff8c1648ccd1a199ebb8c0a5a84Darin Petkov assert(!Symbol->isVariable() && "Cannot emit a variable symbol!"); 1345bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold assert(CurSection && "Cannot emit before setting section!"); 135d315dc7f336ceff8c1648ccd1a199ebb8c0a5a84Darin Petkov 136ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan Symbol->setSection(*CurSection); 137ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 138ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol); 139db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasan 140ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan // FIXME: This is wasteful, we don't necessarily need to create a data 141ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan // fragment. Instead, we should mark the symbol as pointing into the data 1425bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold // fragment if it exists, otherwise we should just queue the label and set its 143ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan // fragment pointer when we emit the next fragment. 144ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan MCDataFragment *DF = getOrCreateDataFragment(); 145ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 146d315dc7f336ceff8c1648ccd1a199ebb8c0a5a84Darin Petkov assert(!SD.getFragment() && "Unexpected fragment on symbol data!"); 147d315dc7f336ceff8c1648ccd1a199ebb8c0a5a84Darin Petkov SD.setFragment(DF); 148ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan SD.setOffset(DF->getContents().size()); 1495a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov} 150c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold 1515a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkovvoid WinCOFFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) { 1525a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov llvm_unreachable("not implemented"); 153ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan} 1545bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold 1555a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkovvoid WinCOFFStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) { 156ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan // TODO: This is exactly the same as MachOStreamer. Consider merging into 157ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan // MCObjectStreamer. 158db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasan getAssembler().getOrCreateSymbolData(*Symbol); 159ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan AddValueSymbols(Value); 160ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan Symbol->setVariableValue(Value); 161856166594771c61973856f563e622ccb7dd48aa1Alex Deymo} 162856166594771c61973856f563e622ccb7dd48aa1Alex Deymo 1633defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.comvoid WinCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol, 1643defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com MCSymbolAttr Attribute) { 165ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan switch (Attribute) { 1665a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov case MCSA_WeakReference: 167c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold getAssembler().getOrCreateSymbolData(*Symbol).modifyFlags( 1685a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov COFF::SF_WeakReference, 1695a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov COFF::SF_WeakReference); 170ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan break; 1715bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold 1725a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov case MCSA_Global: 173ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan getAssembler().getOrCreateSymbolData(*Symbol).setExternal(true); 174ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan break; 175db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasan 176ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan default: 177ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan llvm_unreachable("unsupported attribute"); 178856166594771c61973856f563e622ccb7dd48aa1Alex Deymo break; 1793defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com } 1803defe6acb3609e70e851a6eff062577d25a2af9dadlr@google.com} 181ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 1825a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkovvoid WinCOFFStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) { 183c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold llvm_unreachable("not implemented"); 1845a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov} 1855a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov 186ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasanvoid WinCOFFStreamer::BeginCOFFSymbolDef(MCSymbol const *Symbol) { 1875bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold assert(CurSymbol == NULL && "EndCOFFSymbolDef must be called between calls " 1885a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov "to BeginCOFFSymbolDef!"); 189ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan CurSymbol = Symbol; 190ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan} 191ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 192db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasanvoid WinCOFFStreamer::EmitCOFFSymbolStorageClass(int StorageClass) { 193ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan assert(CurSymbol != NULL && "BeginCOFFSymbolDef must be called first!"); 194ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan assert((StorageClass & ~0xFF) == 0 && "StorageClass must only have data in " 195ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan "the first byte!"); 196ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 1975a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov getAssembler().getOrCreateSymbolData(*CurSymbol).modifyFlags( 1985a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov StorageClass << COFF::SF_ClassShift, 199ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan COFF::SF_ClassMask); 2005a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov} 201c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold 2025a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkovvoid WinCOFFStreamer::EmitCOFFSymbolType(int Type) { 2035a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov assert(CurSymbol != NULL && "BeginCOFFSymbolDef must be called first!"); 204ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan assert((Type & ~0xFFFF) == 0 && "Type must only have data in the first 2 " 2055bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold "bytes"); 2065a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov 207ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan getAssembler().getOrCreateSymbolData(*CurSymbol).modifyFlags( 208ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan Type << COFF::SF_TypeShift, 209ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan COFF::SF_TypeMask); 210db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasan} 211ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 212ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasanvoid WinCOFFStreamer::EndCOFFSymbolDef() { 213ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan assert(CurSymbol != NULL && "BeginCOFFSymbolDef must be called first!"); 214ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan CurSymbol = NULL; 2155a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov} 2165a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov 217ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasanvoid WinCOFFStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) { 2185a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov llvm_unreachable("not implemented"); 219c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold} 2205a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov 2215a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkovvoid WinCOFFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size, 2225a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov unsigned ByteAlignment) { 223ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan AddCommonSymbol(Symbol, Size, ByteAlignment, true); 2245bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold} 2255a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov 226ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasanvoid WinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) { 227ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan AddCommonSymbol(Symbol, Size, 1, false); 228ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan} 229db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasan 230ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasanvoid WinCOFFStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol, 231ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan unsigned Size,unsigned ByteAlignment) { 232ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan llvm_unreachable("not implemented"); 233ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan} 234ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 2355a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkovvoid WinCOFFStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol, 2365a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov uint64_t Size, unsigned ByteAlignment) { 237ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan llvm_unreachable("not implemented"); 2385a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov} 239c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold 2405a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkovvoid WinCOFFStreamer::EmitBytes(StringRef Data, unsigned AddrSpace) { 2415a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov // TODO: This is copied exactly from the MachOStreamer. Consider merging into 2425a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov // MCObjectStreamer? 243ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan getOrCreateDataFragment()->getContents().append(Data.begin(), Data.end()); 2445bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold} 2455a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov 246ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasanvoid WinCOFFStreamer::EmitValue(const MCExpr *Value, unsigned Size, 247ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan unsigned AddrSpace) { 248ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan assert(AddrSpace == 0 && "Address space must be 0!"); 249db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasan 250ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan // TODO: This is copied exactly from the MachOStreamer. Consider merging into 251ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan // MCObjectStreamer? 252ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan MCDataFragment *DF = getOrCreateDataFragment(); 253ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 254ac41a82e4be1be43913292d13d58b5eb2c572f53Alex Deymo // Avoid fixups when possible. 255970bb28905b44bf9f2cb986bb412ecda1095b0b1Andrew de los Reyes int64_t AbsValue; 256970bb28905b44bf9f2cb986bb412ecda1095b0b1Andrew de los Reyes if (AddValueSymbols(Value)->EvaluateAsAbsolute(AbsValue)) { 257ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan // FIXME: Endianness assumption. 2583f0303aa211e2de2d466cef063ff6f39fffe32ddAndrew de los Reyes for (unsigned i = 0; i != Size; ++i) 259c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold DF->getContents().push_back(uint8_t(AbsValue >> (i * 8))); 2603f0303aa211e2de2d466cef063ff6f39fffe32ddAndrew de los Reyes } else { 2613f0303aa211e2de2d466cef063ff6f39fffe32ddAndrew de los Reyes DF->addFixup(MCFixup::Create(DF->getContents().size(), 262ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan AddValueSymbols(Value), 263c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold MCFixup::getKindForSize(Size))); 2645bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold DF->getContents().resize(DF->getContents().size() + Size, 0); 2655a7f565a542196f24eb87ddac96508f8a84e3329Darin Petkov } 266ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan} 2673f0303aa211e2de2d466cef063ff6f39fffe32ddAndrew de los Reyes 2683f0303aa211e2de2d466cef063ff6f39fffe32ddAndrew de los Reyesvoid WinCOFFStreamer::EmitGPRel32Value(const MCExpr *Value) { 269ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan llvm_unreachable("not implemented"); 27049d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov} 271c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold 27249d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkovvoid WinCOFFStreamer::EmitValueToAlignment(unsigned ByteAlignment, 27349d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov int64_t Value, 27449d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov unsigned ValueSize, 275ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan unsigned MaxBytesToEmit) { 27649d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov // TODO: This is copied exactly from the MachOStreamer. Consider merging into 27749d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov // MCObjectStreamer? 278c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold if (MaxBytesToEmit == 0) 27949d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov MaxBytesToEmit = ByteAlignment; 280ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan new MCAlignFragment(ByteAlignment, Value, ValueSize, MaxBytesToEmit, 28110d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkov getCurrentSectionData()); 2825bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold 28349d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov // Update the maximum alignment on the current section if necessary. 284ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan if (ByteAlignment > getCurrentSectionData()->getAlignment()) 285ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan getCurrentSectionData()->setAlignment(ByteAlignment); 286ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan} 287db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasan 288ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasanvoid WinCOFFStreamer::EmitCodeAlignment(unsigned ByteAlignment, 289ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan unsigned MaxBytesToEmit) { 2905bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold // TODO: This is copied exactly from the MachOStreamer. Consider merging into 291ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan // MCObjectStreamer? 292ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan if (MaxBytesToEmit == 0) 293ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan MaxBytesToEmit = ByteAlignment; 29410d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkov MCAlignFragment *F = new MCAlignFragment(ByteAlignment, 0, 1, MaxBytesToEmit, 29510d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkov getCurrentSectionData()); 296ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan F->setEmitNops(true); 29710d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkov 298c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold // Update the maximum alignment on the current section if necessary. 29910d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkov if (ByteAlignment > getCurrentSectionData()->getAlignment()) 30010d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkov getCurrentSectionData()->setAlignment(ByteAlignment); 30110d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkov} 302ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 30310d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkovvoid WinCOFFStreamer::EmitValueToOffset(const MCExpr *Offset, 30410d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkov unsigned char Value) { 305c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold llvm_unreachable("not implemented"); 30610d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkov} 307ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 30810d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkovvoid WinCOFFStreamer::EmitFileDirective(StringRef Filename) { 309856166594771c61973856f563e622ccb7dd48aa1Alex Deymo // Ignore for now, linkers don't care, and proper debug 3105bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold // info will be a much large effort. 31110d02dd60d4c4f41f7f4ed92322fa7b597760118Darin Petkov} 312ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 313db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasanvoid WinCOFFStreamer::EmitDwarfFileDirective(unsigned FileNo, 314ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan StringRef Filename) { 3155bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold llvm_unreachable("not implemented"); 316ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan} 317ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 318ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasanvoid WinCOFFStreamer::EmitInstruction(const MCInst &Instruction) { 31949d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov for (unsigned i = 0, e = Instruction.getNumOperands(); i != e; ++i) 32049d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov if (Instruction.getOperand(i).isExpr()) 321ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan AddValueSymbols(Instruction.getOperand(i).getExpr()); 322a3df55badfc7dc25792aba1ca6e7ade582b566a7Darin Petkov 323c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold getCurrentSectionData()->setHasInstructions(true); 324a3df55badfc7dc25792aba1ca6e7ade582b566a7Darin Petkov 325a3df55badfc7dc25792aba1ca6e7ade582b566a7Darin Petkov MCInstFragment *Fragment = 326a3df55badfc7dc25792aba1ca6e7ade582b566a7Darin Petkov new MCInstFragment(Instruction, getCurrentSectionData()); 327ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 328a3df55badfc7dc25792aba1ca6e7ade582b566a7Darin Petkov raw_svector_ostream VecOS(Fragment->getCode()); 329a3df55badfc7dc25792aba1ca6e7ade582b566a7Darin Petkov 330c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold getAssembler().getEmitter().EncodeInstruction(Instruction, VecOS, 331a3df55badfc7dc25792aba1ca6e7ade582b566a7Darin Petkov Fragment->getFixups()); 332ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan} 3335bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnold 334a3df55badfc7dc25792aba1ca6e7ade582b566a7Darin Petkovvoid WinCOFFStreamer::Finish() { 335ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan MCObjectStreamer::Finish(); 336db0acdfca1ea33987e8b29325f4594417d1fae57Jay Srinivasan} 337ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan 3385bb4c90b8bdf931426d1926b21b0316a86b4b4e4Gilad Arnoldnamespace llvm 339ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan{ 340ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan MCStreamer *createWinCOFFStreamer(MCContext &Context, 341ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan TargetAsmBackend &TAB, 342a3df55badfc7dc25792aba1ca6e7ade582b566a7Darin Petkov MCCodeEmitter &CE, 343a3df55badfc7dc25792aba1ca6e7ade582b566a7Darin Petkov raw_ostream &OS, 344ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan bool RelaxAll) { 34549d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov WinCOFFStreamer *S = new WinCOFFStreamer(Context, TAB, CE, OS); 346c9abbec864f283d1873883bc8f9b523020ee2acbGilad Arnold S->getAssembler().setRelaxAll(RelaxAll); 34749d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov return S; 34849d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov } 34949d91329a3a84d7e2b35f6e1ffc8a9b4d478515bDarin Petkov} 350ae4697c073b84b260990a141acd53c6806da0708Jay Srinivasan