MCMachOStreamer.cpp revision 85f2ecc697a8ca6c8cf08093054cbbb9d2060ccf
1fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar//===- lib/MC/MCMachOStreamer.cpp - Mach-O Object Output ------------===// 2fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// 3fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// The LLVM Compiler Infrastructure 4fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// 5fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// This file is distributed under the University of Illinois Open Source 6fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// License. See LICENSE.TXT for details. 7fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// 8fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar//===----------------------------------------------------------------------===// 9fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 10fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar#include "llvm/MC/MCStreamer.h" 11fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 12fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar#include "llvm/MC/MCAssembler.h" 13fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar#include "llvm/MC/MCContext.h" 144fac74950a1ff08b995b366bfb84369c1507faefDaniel Dunbar#include "llvm/MC/MCCodeEmitter.h" 158c2eebe4074ef218b30d94358f6b2e45c079605cDaniel Dunbar#include "llvm/MC/MCExpr.h" 164fac74950a1ff08b995b366bfb84369c1507faefDaniel Dunbar#include "llvm/MC/MCInst.h" 178dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar#include "llvm/MC/MCObjectStreamer.h" 18fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar#include "llvm/MC/MCSection.h" 19fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar#include "llvm/MC/MCSymbol.h" 20a6eeb6e226d7d86d04e34e3b6464f66e0a052f43Kevin Enderby#include "llvm/MC/MCMachOSymbolFlags.h" 21b07ce60981368f816af4caa3257e1e4ebf059133Kevin Enderby#include "llvm/MC/MCSectionMachO.h" 22b07ce60981368f816af4caa3257e1e4ebf059133Kevin Enderby#include "llvm/MC/MCDwarf.h" 23c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby#include "llvm/Support/Dwarf.h" 24fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar#include "llvm/Support/ErrorHandling.h" 254fac74950a1ff08b995b366bfb84369c1507faefDaniel Dunbar#include "llvm/Support/raw_ostream.h" 26d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar#include "llvm/Target/TargetAsmBackend.h" 27d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar 28fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarusing namespace llvm; 29fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 30fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarnamespace { 31fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 328dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbarclass MCMachOStreamer : public MCObjectStreamer { 336aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbarprivate: 34f89671d994ba27e2816a7e49eb8bbc1b43d2a147Rafael Espindola virtual void EmitInstToData(const MCInst &Inst); 352ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar 36fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarpublic: 371f3e445184e5ca2aa4295c2a77f2a4e0b957fea1Daniel Dunbar MCMachOStreamer(MCContext &Context, TargetAsmBackend &TAB, 388dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar raw_ostream &OS, MCCodeEmitter *Emitter) 3985f2ecc697a8ca6c8cf08093054cbbb9d2060ccfRafael Espindola : MCObjectStreamer(Context, TAB, OS, Emitter) {} 40ac2884a717daf3ad2aa8425320795d661e8a980bDaniel Dunbar 41fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar /// @name MCStreamer Interface 42fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar /// @{ 43fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 44d80781b98b771d370730ab7c630018f23e202b57Rafael Espindola virtual void InitSections(); 45fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar virtual void EmitLabel(MCSymbol *Symbol); 46a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner virtual void EmitAssemblerFlag(MCAssemblerFlag Flag); 47ce79299f78bb04e76e1860ab119b85d69f3a19c7Jim Grosbach virtual void EmitThumbFunc(MCSymbol *Func); 48821e3334ed3390d931f497300e6a5f1dc21bcfb3Daniel Dunbar virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value); 49a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute); 50fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue); 519eb158d5b4cd4f6fc80912e2dd77bdf13c3ca0e7Chris Lattner virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size, 527092c7e1dcf9d05741b400dd54bbd7d3419773b2Daniel Dunbar unsigned ByteAlignment); 53b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol) { 54b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner assert(0 && "macho doesn't support this directive"); 55b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner } 56b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner virtual void EmitCOFFSymbolStorageClass(int StorageClass) { 57b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner assert(0 && "macho doesn't support this directive"); 58b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner } 59b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner virtual void EmitCOFFSymbolType(int Type) { 60b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner assert(0 && "macho doesn't support this directive"); 61b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner } 62b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner virtual void EndCOFFSymbolDef() { 63b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner assert(0 && "macho doesn't support this directive"); 64b54b9ddaaf2d258767d360583642ed1b91075fc9Chris Lattner } 6599328add833807f12a4950c7de29fb2a5df04703Chris Lattner virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) { 6699328add833807f12a4950c7de29fb2a5df04703Chris Lattner assert(0 && "macho doesn't support this directive"); 6799328add833807f12a4950c7de29fb2a5df04703Chris Lattner } 689eb158d5b4cd4f6fc80912e2dd77bdf13c3ca0e7Chris Lattner virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) { 699eb158d5b4cd4f6fc80912e2dd77bdf13c3ca0e7Chris Lattner assert(0 && "macho doesn't support this directive"); 709eb158d5b4cd4f6fc80912e2dd77bdf13c3ca0e7Chris Lattner } 718751b94ffbd9c49df8949a37f78d6bd0be87b256Daniel Dunbar virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0, 727092c7e1dcf9d05741b400dd54bbd7d3419773b2Daniel Dunbar unsigned Size = 0, unsigned ByteAlignment = 0); 73011c3f110bca748db66e437924f936a62f1969bfEric Christopher virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol, 74011c3f110bca748db66e437924f936a62f1969bfEric Christopher uint64_t Size, unsigned ByteAlignment = 0); 75aaec205b87637cd0d59d4f11630db603686eb73dChris Lattner virtual void EmitBytes(StringRef Data, unsigned AddrSpace); 76fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0, 77fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar unsigned ValueSize = 1, 78fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar unsigned MaxBytesToEmit = 0); 796e72048add2a6464e038121c6c275da37528aa0aKevin Enderby virtual void EmitCodeAlignment(unsigned ByteAlignment, 806e72048add2a6464e038121c6c275da37528aa0aKevin Enderby unsigned MaxBytesToEmit = 0); 812ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar 82a6594fc7156c0afbe6fd5a6aab9b099aaf950c53Chris Lattner virtual void EmitFileDirective(StringRef Filename) { 8396749678c9d4cf73d8cbc108a2f2f4872e4e4413Daniel Dunbar // FIXME: Just ignore the .file; it isn't important enough to fail the 8496749678c9d4cf73d8cbc108a2f2f4872e4e4413Daniel Dunbar // entire assembly. 8596749678c9d4cf73d8cbc108a2f2f4872e4e4413Daniel Dunbar 8696749678c9d4cf73d8cbc108a2f2f4872e4e4413Daniel Dunbar //report_fatal_error("unsupported directive: '.file'"); 87a6594fc7156c0afbe6fd5a6aab9b099aaf950c53Chris Lattner } 882ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar 89a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar virtual void Finish(); 90a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar 91fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar /// @} 92fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar}; 93fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 94fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} // end anonymous namespace. 95fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 96d80781b98b771d370730ab7c630018f23e202b57Rafael Espindolavoid MCMachOStreamer::InitSections() { 97d80781b98b771d370730ab7c630018f23e202b57Rafael Espindola SwitchSection(getContext().getMachOSection("__TEXT", "__text", 98d80781b98b771d370730ab7c630018f23e202b57Rafael Espindola MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, 99d80781b98b771d370730ab7c630018f23e202b57Rafael Espindola 0, SectionKind::getText())); 100d80781b98b771d370730ab7c630018f23e202b57Rafael Espindola 101d80781b98b771d370730ab7c630018f23e202b57Rafael Espindola} 102d80781b98b771d370730ab7c630018f23e202b57Rafael Espindola 103fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarvoid MCMachOStreamer::EmitLabel(MCSymbol *Symbol) { 104ba210243ef7d325ef6954d459091edf580a241f9Rafael Espindola assert(Symbol->isUndefined() && "Cannot define a symbol twice!"); 105ba210243ef7d325ef6954d459091edf580a241f9Rafael Espindola 106ea4afa91eb453323948588ad1e1706d842fb9007Rafael Espindola // isSymbolLinkerVisible uses the section. 107ba210243ef7d325ef6954d459091edf580a241f9Rafael Espindola Symbol->setSection(*CurSection); 108a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar // We have to create a new fragment if this is an atom defining symbol, 109a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar // fragments cannot span atoms. 110ea4afa91eb453323948588ad1e1706d842fb9007Rafael Espindola if (getAssembler().isSymbolLinkerVisible(*Symbol)) 111a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar new MCDataFragment(getCurrentSectionData()); 112071f73db4a0c3f7f00ef14d38af17f3c8d69827aDaniel Dunbar 113ea4afa91eb453323948588ad1e1706d842fb9007Rafael Espindola MCObjectStreamer::EmitLabel(Symbol); 1146aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar 115ea4afa91eb453323948588ad1e1706d842fb9007Rafael Espindola MCSymbolData &SD = getAssembler().getSymbolData(*Symbol); 116b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // This causes the reference type flag to be cleared. Darwin 'as' was "trying" 117b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // to clear the weak reference and weak definition bits too, but the 118b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // implementation was buggy. For now we just try to match 'as', for 119b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // diffability. 120b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // 121b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // FIXME: Cleanup this code, these bits should be emitted based on semantic 122b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // properties, not on the order of definition, etc. 123b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar SD.setFlags(SD.getFlags() & ~SF_ReferenceTypeMask); 124fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 125fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 126a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattnervoid MCMachOStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) { 1276009db486e7fba448ccb28dff676c012efade8f0Daniel Dunbar switch (Flag) { 128ce79299f78bb04e76e1860ab119b85d69f3a19c7Jim Grosbach case MCAF_SyntaxUnified: return; // no-op here. 129ce79299f78bb04e76e1860ab119b85d69f3a19c7Jim Grosbach case MCAF_Code16: return; // no-op here. 130ba21957cbd7b25e3d25a3e9befe6151000242853Jim Grosbach case MCAF_Code32: return; // no-op here. 131a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCAF_SubsectionsViaSymbols: 1328dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar getAssembler().setSubsectionsViaSymbols(true); 1338c3eaf46a1fb69004723ce78aaa82965d6474175Daniel Dunbar return; 1345c0d472b6ebc4408b97d12e1e545cafdcbd50adfChandler Carruth default: 1355c0d472b6ebc4408b97d12e1e545cafdcbd50adfChandler Carruth llvm_unreachable("invalid assembler flag!"); 1366009db486e7fba448ccb28dff676c012efade8f0Daniel Dunbar } 137fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 138fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 139ce79299f78bb04e76e1860ab119b85d69f3a19c7Jim Grosbachvoid MCMachOStreamer::EmitThumbFunc(MCSymbol *Func) { 140ce79299f78bb04e76e1860ab119b85d69f3a19c7Jim Grosbach // FIXME: Flag the function ISA as thumb with DW_AT_APPLE_isa. 141ce79299f78bb04e76e1860ab119b85d69f3a19c7Jim Grosbach} 142ce79299f78bb04e76e1860ab119b85d69f3a19c7Jim Grosbach 143821e3334ed3390d931f497300e6a5f1dc21bcfb3Daniel Dunbarvoid MCMachOStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) { 1448067adc271d7ccfcd28a238d73942b21a5e2bc62Michael J. Spencer // TODO: This is exactly the same as WinCOFFStreamer. Consider merging into 1458067adc271d7ccfcd28a238d73942b21a5e2bc62Michael J. Spencer // MCObjectStreamer. 146a4d8667c870759a70aa9bea99e64b7f7e938b1a1Daniel Dunbar // FIXME: Lift context changes into super class. 1478dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar getAssembler().getOrCreateSymbolData(*Symbol); 14808a408a4b3224627db07eb27e174085d8e1d2426Daniel Dunbar Symbol->setVariableValue(AddValueSymbols(Value)); 149fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 150fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 151fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarvoid MCMachOStreamer::EmitSymbolAttribute(MCSymbol *Symbol, 152a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner MCSymbolAttr Attribute) { 1530c7761b3f98fee270d73f5b9c440fe15e82af263Daniel Dunbar // Indirect symbols are handled differently, to match how 'as' handles 1540c7761b3f98fee270d73f5b9c440fe15e82af263Daniel Dunbar // them. This makes writing matching .o files easier. 155a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner if (Attribute == MCSA_IndirectSymbol) { 156ad7c3d55932f949e6bd428232999088a53f54a4fDaniel Dunbar // Note that we intentionally cannot use the symbol data here; this is 157ad7c3d55932f949e6bd428232999088a53f54a4fDaniel Dunbar // important for matching the string table that 'as' generates. 1580c7761b3f98fee270d73f5b9c440fe15e82af263Daniel Dunbar IndirectSymbolData ISD; 1590c7761b3f98fee270d73f5b9c440fe15e82af263Daniel Dunbar ISD.Symbol = Symbol; 16083b467178a8295048f3ee7b44ff9c7ea244a96ccDaniel Dunbar ISD.SectionData = getCurrentSectionData(); 1618dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar getAssembler().getIndirectSymbols().push_back(ISD); 1620c7761b3f98fee270d73f5b9c440fe15e82af263Daniel Dunbar return; 1630c7761b3f98fee270d73f5b9c440fe15e82af263Daniel Dunbar } 1640c7761b3f98fee270d73f5b9c440fe15e82af263Daniel Dunbar 1656aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // Adding a symbol attribute always introduces the symbol, note that an 16646836a783ab29f9cb49655d8b9cb8f5538a626feDaniel Dunbar // important side effect of calling getOrCreateSymbolData here is to register 16746836a783ab29f9cb49655d8b9cb8f5538a626feDaniel Dunbar // the symbol with the assembler. 1688dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol); 1696aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar 1706aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // The implementation of symbol attributes is designed to match 'as', but it 1716aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // leaves much to desired. It doesn't really make sense to arbitrarily add and 1726aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // remove flags, but 'as' allows this (in particular, see .desc). 1736aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // 1746aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // In the future it might be worth trying to make these operations more well 1756aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // defined. 1763edd9bb7a3da8526eb2f4a5dae2962a987d3d566Daniel Dunbar switch (Attribute) { 177a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_Invalid: 178ed0ab15170f0f8fc4269d58757378bc8726b56a1Chris Lattner case MCSA_ELF_TypeFunction: 179ed0ab15170f0f8fc4269d58757378bc8726b56a1Chris Lattner case MCSA_ELF_TypeIndFunction: 180ed0ab15170f0f8fc4269d58757378bc8726b56a1Chris Lattner case MCSA_ELF_TypeObject: 181ed0ab15170f0f8fc4269d58757378bc8726b56a1Chris Lattner case MCSA_ELF_TypeTLS: 182ed0ab15170f0f8fc4269d58757378bc8726b56a1Chris Lattner case MCSA_ELF_TypeCommon: 183ed0ab15170f0f8fc4269d58757378bc8726b56a1Chris Lattner case MCSA_ELF_TypeNoType: 184e13a0ff8ac6c86a04397801061e1a702d4e0eab1Rafael Espindola case MCSA_ELF_TypeGnuUniqueObject: 185a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_IndirectSymbol: 186a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_Hidden: 187a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_Internal: 188a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_Protected: 189a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_Weak: 190a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_Local: 1916aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar assert(0 && "Invalid symbol attribute for Mach-O!"); 1926aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar break; 1933edd9bb7a3da8526eb2f4a5dae2962a987d3d566Daniel Dunbar 194a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_Global: 1958f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar SD.setExternal(true); 196b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // This effectively clears the undefined lazy bit, in Darwin 'as', although 197b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // it isn't very consistent because it implements this as part of symbol 198b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // lookup. 199b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // 200b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // FIXME: Cleanup this code, these bits should be emitted based on semantic 201b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar // properties, not on the order of definition, etc. 202b18d2dd115d8ff3fd75bbaa90849473266236dc3Daniel Dunbar SD.setFlags(SD.getFlags() & ~SF_ReferenceTypeUndefinedLazy); 2033edd9bb7a3da8526eb2f4a5dae2962a987d3d566Daniel Dunbar break; 2046aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar 205a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_LazyReference: 2066aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // FIXME: This requires -dynamic. 2076aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar SD.setFlags(SD.getFlags() | SF_NoDeadStrip); 2086aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar if (Symbol->isUndefined()) 2096aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar SD.setFlags(SD.getFlags() | SF_ReferenceTypeUndefinedLazy); 2106aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar break; 2116aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar 2126aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // Since .reference sets the no dead strip bit, it is equivalent to 2136aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // .no_dead_strip in practice. 214a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_Reference: 215a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_NoDeadStrip: 2166aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar SD.setFlags(SD.getFlags() | SF_NoDeadStrip); 2176aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar break; 2186aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar 219e8e98d7f2eaa0613442ce21ab6a040c0f04f5b4dKevin Enderby case MCSA_SymbolResolver: 220e8e98d7f2eaa0613442ce21ab6a040c0f04f5b4dKevin Enderby SD.setFlags(SD.getFlags() | SF_SymbolResolver); 221e8e98d7f2eaa0613442ce21ab6a040c0f04f5b4dKevin Enderby break; 222e8e98d7f2eaa0613442ce21ab6a040c0f04f5b4dKevin Enderby 223a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_PrivateExtern: 2246aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar SD.setExternal(true); 2256aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar SD.setPrivateExtern(true); 2266aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar break; 2276aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar 228a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_WeakReference: 2296aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // FIXME: This requires -dynamic. 2306aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar if (Symbol->isUndefined()) 2316aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar SD.setFlags(SD.getFlags() | SF_WeakReference); 2326aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar break; 2336aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar 234a5ad93a10a5435f21090b09edb6b3a7e44967648Chris Lattner case MCSA_WeakDefinition: 2356aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // FIXME: 'as' enforces that this is defined and global. The manual claims 2366aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // it has to be in a coalesced section, but this isn't enforced. 2376aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar SD.setFlags(SD.getFlags() | SF_WeakDefinition); 2386aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar break; 239f59cac5ed36360b4c462781051f996b3499d7e0fKevin Enderby 240f59cac5ed36360b4c462781051f996b3499d7e0fKevin Enderby case MCSA_WeakDefAutoPrivate: 241f59cac5ed36360b4c462781051f996b3499d7e0fKevin Enderby SD.setFlags(SD.getFlags() | SF_WeakDefinition | SF_WeakReference); 242f59cac5ed36360b4c462781051f996b3499d7e0fKevin Enderby break; 2433edd9bb7a3da8526eb2f4a5dae2962a987d3d566Daniel Dunbar } 244fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 245fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 246fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarvoid MCMachOStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) { 2476aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar // Encode the 'desc' value into the lowest implementation defined bits. 2482ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar assert(DescValue == (DescValue & SF_DescFlagsMask) && 2496aff2fbd56d4bc2d6029f7c9bd49a97f6dc01213Daniel Dunbar "Invalid .desc value!"); 2508dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar getAssembler().getOrCreateSymbolData(*Symbol).setFlags( 2518dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar DescValue & SF_DescFlagsMask); 252fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 253fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 2549eb158d5b4cd4f6fc80912e2dd77bdf13c3ca0e7Chris Lattnervoid MCMachOStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size, 2557092c7e1dcf9d05741b400dd54bbd7d3419773b2Daniel Dunbar unsigned ByteAlignment) { 2568f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar // FIXME: Darwin 'as' does appear to allow redef of a .comm by itself. 2578f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar assert(Symbol->isUndefined() && "Cannot define a symbol twice!"); 2588f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar 2598dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol); 2608f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar SD.setExternal(true); 2617092c7e1dcf9d05741b400dd54bbd7d3419773b2Daniel Dunbar SD.setCommon(Size, ByteAlignment); 262fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 263fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 2648751b94ffbd9c49df8949a37f78d6bd0be87b256Daniel Dunbarvoid MCMachOStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol, 2657092c7e1dcf9d05741b400dd54bbd7d3419773b2Daniel Dunbar unsigned Size, unsigned ByteAlignment) { 2668dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar MCSectionData &SectData = getAssembler().getOrCreateSectionData(*Section); 267d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 268d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // The symbol may not be present, which only creates the section. 269d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar if (!Symbol) 270d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar return; 271d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 272d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // FIXME: Assert that this section has the zerofill type. 273d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 274d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar assert(Symbol->isUndefined() && "Cannot define a symbol twice!"); 275d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 2768dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol); 277d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 278e73d49eda2cb4fc30b52c4a241acf69c8af98302Daniel Dunbar // Emit an align fragment if necessary. 279e73d49eda2cb4fc30b52c4a241acf69c8af98302Daniel Dunbar if (ByteAlignment != 1) 2801c15413ebc8f4a35545a381a789a718627396d03Daniel Dunbar new MCAlignFragment(ByteAlignment, 0, 0, ByteAlignment, &SectData); 281e73d49eda2cb4fc30b52c4a241acf69c8af98302Daniel Dunbar 2824e544870c4c3f81b150e4c3b38a18d629d706b74Daniel Dunbar MCFragment *F = new MCFillFragment(0, 0, Size, &SectData); 283d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar SD.setFragment(F); 284d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 285d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar Symbol->setSection(*Section); 286d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 287d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Update the maximum alignment on the zero fill section if necessary. 288d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar if (ByteAlignment > SectData.getAlignment()) 289d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar SectData.setAlignment(ByteAlignment); 290fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 291fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 292070c1abbc9b78fd8eef9365c5e776a13b64b9631Eric Christopher// This should always be called with the thread local bss section. Like the 293070c1abbc9b78fd8eef9365c5e776a13b64b9631Eric Christopher// .zerofill directive this doesn't actually switch sections on us. 294011c3f110bca748db66e437924f936a62f1969bfEric Christophervoid MCMachOStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol, 295011c3f110bca748db66e437924f936a62f1969bfEric Christopher uint64_t Size, unsigned ByteAlignment) { 296011c3f110bca748db66e437924f936a62f1969bfEric Christopher EmitZerofill(Section, Symbol, Size, ByteAlignment); 297011c3f110bca748db66e437924f936a62f1969bfEric Christopher return; 298482eba054ab3543ee0e1f453d3d6441092f4b76dEric Christopher} 299482eba054ab3543ee0e1f453d3d6441092f4b76dEric Christopher 300aaec205b87637cd0d59d4f11630db603686eb73dChris Lattnervoid MCMachOStreamer::EmitBytes(StringRef Data, unsigned AddrSpace) { 3018067adc271d7ccfcd28a238d73942b21a5e2bc62Michael J. Spencer // TODO: This is exactly the same as WinCOFFStreamer. Consider merging into 3028067adc271d7ccfcd28a238d73942b21a5e2bc62Michael J. Spencer // MCObjectStreamer. 303f70f477024a23408d3a535920e6d4750478ac9aeDaniel Dunbar getOrCreateDataFragment()->getContents().append(Data.begin(), Data.end()); 304fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 305fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 306fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarvoid MCMachOStreamer::EmitValueToAlignment(unsigned ByteAlignment, 307fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar int64_t Value, unsigned ValueSize, 308fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar unsigned MaxBytesToEmit) { 3098067adc271d7ccfcd28a238d73942b21a5e2bc62Michael J. Spencer // TODO: This is exactly the same as WinCOFFStreamer. Consider merging into 3108067adc271d7ccfcd28a238d73942b21a5e2bc62Michael J. Spencer // MCObjectStreamer. 311d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar if (MaxBytesToEmit == 0) 312d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MaxBytesToEmit = ByteAlignment; 313a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar new MCAlignFragment(ByteAlignment, Value, ValueSize, MaxBytesToEmit, 314a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar getCurrentSectionData()); 3156e72048add2a6464e038121c6c275da37528aa0aKevin Enderby 3166e72048add2a6464e038121c6c275da37528aa0aKevin Enderby // Update the maximum alignment on the current section if necessary. 31783b467178a8295048f3ee7b44ff9c7ea244a96ccDaniel Dunbar if (ByteAlignment > getCurrentSectionData()->getAlignment()) 31883b467178a8295048f3ee7b44ff9c7ea244a96ccDaniel Dunbar getCurrentSectionData()->setAlignment(ByteAlignment); 3196e72048add2a6464e038121c6c275da37528aa0aKevin Enderby} 3206e72048add2a6464e038121c6c275da37528aa0aKevin Enderby 3216e72048add2a6464e038121c6c275da37528aa0aKevin Enderbyvoid MCMachOStreamer::EmitCodeAlignment(unsigned ByteAlignment, 3226e72048add2a6464e038121c6c275da37528aa0aKevin Enderby unsigned MaxBytesToEmit) { 3238067adc271d7ccfcd28a238d73942b21a5e2bc62Michael J. Spencer // TODO: This is exactly the same as WinCOFFStreamer. Consider merging into 3248067adc271d7ccfcd28a238d73942b21a5e2bc62Michael J. Spencer // MCObjectStreamer. 3256e72048add2a6464e038121c6c275da37528aa0aKevin Enderby if (MaxBytesToEmit == 0) 3266e72048add2a6464e038121c6c275da37528aa0aKevin Enderby MaxBytesToEmit = ByteAlignment; 3271c15413ebc8f4a35545a381a789a718627396d03Daniel Dunbar MCAlignFragment *F = new MCAlignFragment(ByteAlignment, 0, 1, MaxBytesToEmit, 32883b467178a8295048f3ee7b44ff9c7ea244a96ccDaniel Dunbar getCurrentSectionData()); 3291c15413ebc8f4a35545a381a789a718627396d03Daniel Dunbar F->setEmitNops(true); 3300705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 331f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar // Update the maximum alignment on the current section if necessary. 33283b467178a8295048f3ee7b44ff9c7ea244a96ccDaniel Dunbar if (ByteAlignment > getCurrentSectionData()->getAlignment()) 33383b467178a8295048f3ee7b44ff9c7ea244a96ccDaniel Dunbar getCurrentSectionData()->setAlignment(ByteAlignment); 334fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 335fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 3362ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbarvoid MCMachOStreamer::EmitInstToData(const MCInst &Inst) { 3372ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar MCDataFragment *DF = getOrCreateDataFragment(); 3383f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 33973c557458c0e28899f37c557bcaf36c2b6701260Daniel Dunbar SmallVector<MCFixup, 4> Fixups; 3404fac74950a1ff08b995b366bfb84369c1507faefDaniel Dunbar SmallString<256> Code; 3414fac74950a1ff08b995b366bfb84369c1507faefDaniel Dunbar raw_svector_ostream VecOS(Code); 3428dc68ab931e0f0a7c5caf9cd341b2ec855733863Daniel Dunbar getAssembler().getEmitter().EncodeInstruction(Inst, VecOS, Fixups); 343f6346769b344f9b134f0661e8bd2b4245f6490eaDaniel Dunbar VecOS.flush(); 344f6346769b344f9b134f0661e8bd2b4245f6490eaDaniel Dunbar 3452ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar // Add the fixups and data. 3462ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar for (unsigned i = 0, e = Fixups.size(); i != e; ++i) { 3472ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar Fixups[i].setOffset(Fixups[i].getOffset() + DF->getContents().size()); 3482ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar DF->addFixup(Fixups[i]); 3492ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar } 3502ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar DF->getContents().append(Code.begin(), Code.end()); 3512ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar} 3522ac0c453b2de1029f35d9ccb933c1ef303be00a2Daniel Dunbar 353c095793b4ab027181605c79c9808df12afe45d63Kevin Enderbyvoid MCMachOStreamer::Finish() { 354c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby // Dump out the dwarf file & directory tables and line tables. 3558c9aa922a94bd788ea061be7555fb5b1db3a5312Kevin Enderby if (getContext().hasDwarfFiles()) { 356c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby const MCSection *DwarfLineSection = getContext().getMachOSection("__DWARF", 357c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby "__debug_line", 358b07ce60981368f816af4caa3257e1e4ebf059133Kevin Enderby MCSectionMachO::S_ATTR_DEBUG, 359c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby 0, SectionKind::getDataRelLocal()); 36032a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola MCDwarfFileTable::Emit(this, DwarfLineSection); 361b07ce60981368f816af4caa3257e1e4ebf059133Kevin Enderby } 362b07ce60981368f816af4caa3257e1e4ebf059133Kevin Enderby 363a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar // We have to set the fragment atom associations so we can relax properly for 364a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar // Mach-O. 365a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar 366a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar // First, scan the symbol table to build a lookup table from fragments to 367a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar // defining symbols. 368a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar DenseMap<const MCFragment*, MCSymbolData*> DefiningSymbolMap; 369a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar for (MCAssembler::symbol_iterator it = getAssembler().symbol_begin(), 370a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar ie = getAssembler().symbol_end(); it != ie; ++it) { 371a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar if (getAssembler().isSymbolLinkerVisible(it->getSymbol()) && 372a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar it->getFragment()) { 373a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar // An atom defining symbol should never be internal to a fragment. 374a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar assert(it->getOffset() == 0 && "Invalid offset in atom defining symbol!"); 375a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar DefiningSymbolMap[it->getFragment()] = it; 376a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar } 377a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar } 378a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar 379a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar // Set the fragment atom associations by tracking the last seen atom defining 380a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar // symbol. 381a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar for (MCAssembler::iterator it = getAssembler().begin(), 382a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar ie = getAssembler().end(); it != ie; ++it) { 383a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar MCSymbolData *CurrentAtom = 0; 384a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar for (MCSectionData::iterator it2 = it->begin(), 385a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar ie2 = it->end(); it2 != ie2; ++it2) { 386a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar if (MCSymbolData *SD = DefiningSymbolMap.lookup(it2)) 387a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar CurrentAtom = SD; 388a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar it2->setAtom(CurrentAtom); 389a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar } 390a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar } 391a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar 392a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar this->MCObjectStreamer::Finish(); 393a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar} 394a86de1050889b61df2cd42cdc2acc5f9796b7f0cDaniel Dunbar 3951f3e445184e5ca2aa4295c2a77f2a4e0b957fea1Daniel DunbarMCStreamer *llvm::createMachOStreamer(MCContext &Context, TargetAsmBackend &TAB, 396ac2884a717daf3ad2aa8425320795d661e8a980bDaniel Dunbar raw_ostream &OS, MCCodeEmitter *CE, 397ac2884a717daf3ad2aa8425320795d661e8a980bDaniel Dunbar bool RelaxAll) { 398ac2884a717daf3ad2aa8425320795d661e8a980bDaniel Dunbar MCMachOStreamer *S = new MCMachOStreamer(Context, TAB, OS, CE); 399ac2884a717daf3ad2aa8425320795d661e8a980bDaniel Dunbar if (RelaxAll) 400ac2884a717daf3ad2aa8425320795d661e8a980bDaniel Dunbar S->getAssembler().setRelaxAll(true); 401ac2884a717daf3ad2aa8425320795d661e8a980bDaniel Dunbar return S; 402fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 403