Get rid of ReadOnlySection duplicate
[oota-llvm.git] / lib / Target / X86 / X86TargetAsmInfo.cpp
index 060e00d804dc87d75df355dcb69b130c13eba7e8..c6a76f210ae3f80f2de6916a115a33a2af116462 100644 (file)
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by James M. Laskey and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 #include "llvm/Intrinsics.h"
 #include "llvm/Module.h"
 #include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/Dwarf.h"
+
 using namespace llvm;
+using namespace llvm::dwarf;
 
-static const char* x86_asm_table[] = {"{si}", "S",
+static const char *const x86_asm_table[] = {
+                                      "{si}", "S",
                                       "{di}", "D",
                                       "{ax}", "a",
                                       "{cx}", "c",
@@ -35,180 +39,8 @@ static const char* x86_asm_table[] = {"{si}", "S",
 
 X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
   const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
-  
-  // FIXME - Should be simplified.
 
   AsmTransCBE = x86_asm_table;
-  
-  switch (Subtarget->TargetType) {
-  case X86Subtarget::isDarwin:
-    AlignmentIsInBytes = false;
-    GlobalPrefix = "_";
-    if (!Subtarget->is64Bit())
-      Data64bitsDirective = 0;       // we can't emit a 64-bit unit
-    ZeroDirective = "\t.space\t";  // ".space N" emits N zeros.
-    PrivateGlobalPrefix = "L";     // Marker for constant pool idxs
-    BSSSection = 0;                       // no BSS section.
-    ZeroFillDirective = "\t.zerofill\t";  // Uses .zerofill
-    ConstantPoolSection = "\t.const\n";
-    JumpTableDataSection = "\t.const\n";
-    CStringSection = "\t.cstring";
-    FourByteConstantSection = "\t.literal4\n";
-    EightByteConstantSection = "\t.literal8\n";
-    if (Subtarget->is64Bit())
-      SixteenByteConstantSection = "\t.literal16\n";
-    ReadOnlySection = "\t.const\n";
-    LCOMMDirective = "\t.lcomm\t";
-    COMMDirectiveTakesAlignment = false;
-    HasDotTypeDotSizeDirective = false;
-    if (TM.getRelocationModel() == Reloc::Static) {
-      StaticCtorsSection = ".constructor";
-      StaticDtorsSection = ".destructor";
-    } else {
-      StaticCtorsSection = ".mod_init_func";
-      StaticDtorsSection = ".mod_term_func";
-    }
-    PersonalityPrefix = "L";
-    PersonalitySuffix = "$non_lazy_ptr";
-    NeedsIndirectEncoding = true;
-    InlineAsmStart = "# InlineAsm Start";
-    InlineAsmEnd = "# InlineAsm End";
-    SetDirective = "\t.set";
-    PCSymbol = ".";
-    UsedDirective = "\t.no_dead_strip\t";
-    WeakRefDirective = "\t.weak_reference\t";
-    HiddenDirective = "\t.private_extern\t";
-    
-    // In non-PIC modes, emit a special label before jump tables so that the
-    // linker can perform more accurate dead code stripping.
-    if (TM.getRelocationModel() != Reloc::PIC_) {
-      // Emit a local label that is preserved until the linker runs.
-      JumpTableSpecialLabelPrefix = "l";
-    }
-
-    SupportsDebugInformation = true;
-    NeedsSet = true;
-    DwarfAbbrevSection = ".section __DWARF,__debug_abbrev,regular,debug";
-    DwarfInfoSection = ".section __DWARF,__debug_info,regular,debug";
-    DwarfLineSection = ".section __DWARF,__debug_line,regular,debug";
-    DwarfFrameSection = ".section __DWARF,__debug_frame,regular,debug";
-    DwarfPubNamesSection = ".section __DWARF,__debug_pubnames,regular,debug";
-    DwarfPubTypesSection = ".section __DWARF,__debug_pubtypes,regular,debug";
-    DwarfStrSection = ".section __DWARF,__debug_str,regular,debug";
-    DwarfLocSection = ".section __DWARF,__debug_loc,regular,debug";
-    DwarfARangesSection = ".section __DWARF,__debug_aranges,regular,debug";
-    DwarfRangesSection = ".section __DWARF,__debug_ranges,regular,debug";
-    DwarfMacInfoSection = ".section __DWARF,__debug_macinfo,regular,debug";
-
-    // Exceptions handling
-    SupportsExceptionHandling = true;
-    AbsoluteEHSectionOffsets = false;
-    DwarfEHFrameSection =
-    ".section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support";
-    DwarfExceptionSection = ".section __DATA,__gcc_except_tab";
-    break;
-
-  case X86Subtarget::isELF:
-    ReadOnlySection = "\t.section\t.rodata";
-    FourByteConstantSection = "\t.section\t.rodata.cst4,\"aM\",@progbits,4";
-    EightByteConstantSection = "\t.section\t.rodata.cst8,\"aM\",@progbits,8";
-    SixteenByteConstantSection = "\t.section\t.rodata.cst16,\"aM\",@progbits,16";
-    CStringSection = "\t.section\t.rodata.str1.1,\"aMS\",@progbits,1";
-    PrivateGlobalPrefix = ".L";
-    WeakRefDirective = "\t.weak\t";
-    SetDirective = "\t.set\t";
-    PCSymbol = ".";
-
-    // Set up DWARF directives
-    HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
-
-    // Debug Information
-    AbsoluteDebugSectionOffsets = true;
-    SupportsDebugInformation = true;
-    DwarfAbbrevSection =  "\t.section\t.debug_abbrev,\"\",@progbits";
-    DwarfInfoSection =    "\t.section\t.debug_info,\"\",@progbits";
-    DwarfLineSection =    "\t.section\t.debug_line,\"\",@progbits";
-    DwarfFrameSection =   "\t.section\t.debug_frame,\"\",@progbits";
-    DwarfPubNamesSection ="\t.section\t.debug_pubnames,\"\",@progbits";
-    DwarfPubTypesSection ="\t.section\t.debug_pubtypes,\"\",@progbits";
-    DwarfStrSection =     "\t.section\t.debug_str,\"\",@progbits";
-    DwarfLocSection =     "\t.section\t.debug_loc,\"\",@progbits";
-    DwarfARangesSection = "\t.section\t.debug_aranges,\"\",@progbits";
-    DwarfRangesSection =  "\t.section\t.debug_ranges,\"\",@progbits";
-    DwarfMacInfoSection = "\t.section\t.debug_macinfo,\"\",@progbits";
-
-    // Exceptions handling
-    if (!Subtarget->is64Bit())
-      SupportsExceptionHandling = true;
-    AbsoluteEHSectionOffsets = false;
-    DwarfEHFrameSection = "\t.section\t.eh_frame,\"aw\",@progbits";
-    DwarfExceptionSection = "\t.section\t.gcc_except_table,\"a\",@progbits";
-    break;
-
-  case X86Subtarget::isCygwin:
-  case X86Subtarget::isMingw:
-    GlobalPrefix = "_";
-    LCOMMDirective = "\t.lcomm\t";
-    COMMDirectiveTakesAlignment = false;
-    HasDotTypeDotSizeDirective = false;
-    StaticCtorsSection = "\t.section .ctors,\"aw\"";
-    StaticDtorsSection = "\t.section .dtors,\"aw\"";
-    HiddenDirective = NULL;
-    PrivateGlobalPrefix = "L";  // Prefix for private global symbols
-    WeakRefDirective = "\t.weak\t";
-    SetDirective = "\t.set\t";
-
-    // Set up DWARF directives
-    HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
-    AbsoluteDebugSectionOffsets = true;
-    AbsoluteEHSectionOffsets = false;
-    SupportsDebugInformation = true;
-    DwarfSectionOffsetDirective = "\t.secrel32\t";
-    DwarfAbbrevSection =  "\t.section\t.debug_abbrev,\"dr\"";
-    DwarfInfoSection =    "\t.section\t.debug_info,\"dr\"";
-    DwarfLineSection =    "\t.section\t.debug_line,\"dr\"";
-    DwarfFrameSection =   "\t.section\t.debug_frame,\"dr\"";
-    DwarfPubNamesSection ="\t.section\t.debug_pubnames,\"dr\"";
-    DwarfPubTypesSection ="\t.section\t.debug_pubtypes,\"dr\"";
-    DwarfStrSection =     "\t.section\t.debug_str,\"dr\"";
-    DwarfLocSection =     "\t.section\t.debug_loc,\"dr\"";
-    DwarfARangesSection = "\t.section\t.debug_aranges,\"dr\"";
-    DwarfRangesSection =  "\t.section\t.debug_ranges,\"dr\"";
-    DwarfMacInfoSection = "\t.section\t.debug_macinfo,\"dr\"";
-    break;
-
-  case X86Subtarget::isWindows:
-    GlobalPrefix = "_";
-    HasDotTypeDotSizeDirective = false;
-    break;
-
-  default: break;
-  }
-  
-  if (Subtarget->isFlavorIntel()) {
-    GlobalPrefix = "_";
-    CommentString = ";";
-  
-    PrivateGlobalPrefix = "$";
-    AlignDirective = "\talign\t";
-    ZeroDirective = "\tdb\t";
-    ZeroDirectiveSuffix = " dup(0)";
-    AsciiDirective = "\tdb\t";
-    AscizDirective = 0;
-    Data8bitsDirective = "\tdb\t";
-    Data16bitsDirective = "\tdw\t";
-    Data32bitsDirective = "\tdd\t";
-    Data64bitsDirective = "\tdq\t";
-    HasDotTypeDotSizeDirective = false;
-    
-    TextSection = "_text";
-    DataSection = "_data";
-    JumpTableDataSection = NULL;
-    SwitchToSectionDirective = "";
-    TextSectionStartSuffix = "\tsegment 'CODE'";
-    DataSectionStartSuffix = "\tsegment 'DATA'";
-    SectionEndDirectiveSuffix = "\tends\n";
-  }
 
   AssemblerDialect = Subtarget->getAsmFlavor();
 }
@@ -218,50 +50,49 @@ bool X86TargetAsmInfo::LowerToBSwap(CallInst *CI) const {
   // we will turn this bswap into something that will be lowered to logical ops
   // instead of emitting the bswap asm.  For now, we don't support 486 or lower
   // so don't worry about this.
-  
+
   // Verify this is a simple bswap.
   if (CI->getNumOperands() != 2 ||
       CI->getType() != CI->getOperand(1)->getType() ||
       !CI->getType()->isInteger())
     return false;
-  
+
   const IntegerType *Ty = dyn_cast<IntegerType>(CI->getType());
   if (!Ty || Ty->getBitWidth() % 16 != 0)
     return false;
-  
+
   // Okay, we can do this xform, do so now.
   const Type *Tys[] = { Ty };
   Module *M = CI->getParent()->getParent()->getParent();
   Constant *Int = Intrinsic::getDeclaration(M, Intrinsic::bswap, Tys, 1);
-  
+
   Value *Op = CI->getOperand(1);
-  Op = new CallInst(Int, Op, CI->getName(), CI);
-  
+  Op = CallInst::Create(Int, Op, CI->getName(), CI);
+
   CI->replaceAllUsesWith(Op);
   CI->eraseFromParent();
   return true;
 }
 
-
 bool X86TargetAsmInfo::ExpandInlineAsm(CallInst *CI) const {
   InlineAsm *IA = cast<InlineAsm>(CI->getCalledValue());
   std::vector<InlineAsm::ConstraintInfo> Constraints = IA->ParseConstraints();
-  
+
   std::string AsmStr = IA->getAsmString();
-  
+
   // TODO: should remove alternatives from the asmstring: "foo {a|b}" -> "foo a"
   std::vector<std::string> AsmPieces;
   SplitString(AsmStr, AsmPieces, "\n");  // ; as separator?
-  
+
   switch (AsmPieces.size()) {
-  default: return false;    
+  default: return false;
   case 1:
     AsmStr = AsmPieces[0];
     AsmPieces.clear();
     SplitString(AsmStr, AsmPieces, " \t");  // Split with whitespace.
-    
+
     // bswap $0
-    if (AsmPieces.size() == 2 && 
+    if (AsmPieces.size() == 2 &&
         AsmPieces[0] == "bswap" && AsmPieces[1] == "$0") {
       // No need to check constraints, nothing other than the equivalent of
       // "=r,0" would be valid here.
@@ -292,3 +123,313 @@ bool X86TargetAsmInfo::ExpandInlineAsm(CallInst *CI) const {
   }
   return false;
 }
+
+X86DarwinTargetAsmInfo::X86DarwinTargetAsmInfo(const X86TargetMachine &TM):
+  X86TargetAsmInfo(TM), DarwinTargetAsmInfo(TM) {
+  const X86Subtarget* Subtarget = &DTM->getSubtarget<X86Subtarget>();
+  bool is64Bit = Subtarget->is64Bit();
+
+  AlignmentIsInBytes = false;
+  TextAlignFillValue = 0x90;
+  GlobalPrefix = "_";
+  if (!is64Bit)
+    Data64bitsDirective = 0;       // we can't emit a 64-bit unit
+  ZeroDirective = "\t.space\t";  // ".space N" emits N zeros.
+  PrivateGlobalPrefix = "L";     // Marker for constant pool idxs
+  LessPrivateGlobalPrefix = "l";  // Marker for some ObjC metadata
+  BSSSection = 0;                       // no BSS section.
+  ZeroFillDirective = "\t.zerofill\t";  // Uses .zerofill
+  if (DTM->getRelocationModel() != Reloc::Static)
+    ConstantPoolSection = "\t.const_data";
+  else
+    ConstantPoolSection = "\t.const\n";
+  JumpTableDataSection = "\t.const\n";
+  CStringSection = "\t.cstring";
+  // FIXME: Why don't always use this section?
+  if (is64Bit) {
+    SixteenByteConstantSection = getUnnamedSection("\t.literal16\n",
+                                                   SectionFlags::Mergeable);
+  }
+  LCOMMDirective = "\t.lcomm\t";
+  SwitchToSectionDirective = "\t.section ";
+  StringConstantPrefix = "\1LC";
+  // Leopard and above support aligned common symbols.
+  COMMDirectiveTakesAlignment = (Subtarget->getDarwinVers() >= 9);
+  HasDotTypeDotSizeDirective = false;
+  if (TM.getRelocationModel() == Reloc::Static) {
+    StaticCtorsSection = ".constructor";
+    StaticDtorsSection = ".destructor";
+  } else {
+    StaticCtorsSection = ".mod_init_func";
+    StaticDtorsSection = ".mod_term_func";
+  }
+  if (is64Bit) {
+    PersonalityPrefix = "";
+    PersonalitySuffix = "+4@GOTPCREL";
+  } else {
+    PersonalityPrefix = "L";
+    PersonalitySuffix = "$non_lazy_ptr";
+  }
+  NeedsIndirectEncoding = true;
+  InlineAsmStart = "## InlineAsm Start";
+  InlineAsmEnd = "## InlineAsm End";
+  CommentString = "##";
+  SetDirective = "\t.set";
+  PCSymbol = ".";
+  UsedDirective = "\t.no_dead_strip\t";
+  WeakDefDirective = "\t.weak_definition ";
+  WeakRefDirective = "\t.weak_reference ";
+  HiddenDirective = "\t.private_extern ";
+  ProtectedDirective = "\t.globl\t";
+
+  // In non-PIC modes, emit a special label before jump tables so that the
+  // linker can perform more accurate dead code stripping.
+  if (TM.getRelocationModel() != Reloc::PIC_) {
+    // Emit a local label that is preserved until the linker runs.
+    JumpTableSpecialLabelPrefix = "l";
+  }
+
+  SupportsDebugInformation = true;
+  NeedsSet = true;
+  DwarfAbbrevSection = ".section __DWARF,__debug_abbrev,regular,debug";
+  DwarfInfoSection = ".section __DWARF,__debug_info,regular,debug";
+  DwarfLineSection = ".section __DWARF,__debug_line,regular,debug";
+  DwarfFrameSection = ".section __DWARF,__debug_frame,regular,debug";
+  DwarfPubNamesSection = ".section __DWARF,__debug_pubnames,regular,debug";
+  DwarfPubTypesSection = ".section __DWARF,__debug_pubtypes,regular,debug";
+  DwarfStrSection = ".section __DWARF,__debug_str,regular,debug";
+  DwarfLocSection = ".section __DWARF,__debug_loc,regular,debug";
+  DwarfARangesSection = ".section __DWARF,__debug_aranges,regular,debug";
+  DwarfRangesSection = ".section __DWARF,__debug_ranges,regular,debug";
+  DwarfMacInfoSection = ".section __DWARF,__debug_macinfo,regular,debug";
+
+  // Exceptions handling
+  SupportsExceptionHandling = true;
+  GlobalEHDirective = "\t.globl\t";
+  SupportsWeakOmittedEHFrame = false;
+  AbsoluteEHSectionOffsets = false;
+  DwarfEHFrameSection =
+  ".section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support";
+  DwarfExceptionSection = ".section __DATA,__gcc_except_tab";
+}
+
+unsigned
+X86DarwinTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
+                                              bool Global) const {
+  if (Reason == DwarfEncoding::Functions && Global)
+    return (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4);
+  else if (Reason == DwarfEncoding::CodeLabels || !Global)
+    return DW_EH_PE_pcrel;
+  else
+    return DW_EH_PE_absptr;
+}
+
+X86ELFTargetAsmInfo::X86ELFTargetAsmInfo(const X86TargetMachine &TM):
+  X86TargetAsmInfo(TM), ELFTargetAsmInfo(TM) {
+
+  CStringSection = ".rodata.str";
+  PrivateGlobalPrefix = ".L";
+  WeakRefDirective = "\t.weak\t";
+  SetDirective = "\t.set\t";
+  PCSymbol = ".";
+
+  // Set up DWARF directives
+  HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
+
+  // Debug Information
+  AbsoluteDebugSectionOffsets = true;
+  SupportsDebugInformation = true;
+  DwarfAbbrevSection =  "\t.section\t.debug_abbrev,\"\",@progbits";
+  DwarfInfoSection =    "\t.section\t.debug_info,\"\",@progbits";
+  DwarfLineSection =    "\t.section\t.debug_line,\"\",@progbits";
+  DwarfFrameSection =   "\t.section\t.debug_frame,\"\",@progbits";
+  DwarfPubNamesSection ="\t.section\t.debug_pubnames,\"\",@progbits";
+  DwarfPubTypesSection ="\t.section\t.debug_pubtypes,\"\",@progbits";
+  DwarfStrSection =     "\t.section\t.debug_str,\"\",@progbits";
+  DwarfLocSection =     "\t.section\t.debug_loc,\"\",@progbits";
+  DwarfARangesSection = "\t.section\t.debug_aranges,\"\",@progbits";
+  DwarfRangesSection =  "\t.section\t.debug_ranges,\"\",@progbits";
+  DwarfMacInfoSection = "\t.section\t.debug_macinfo,\"\",@progbits";
+
+  // Exceptions handling
+  SupportsExceptionHandling = true;
+  AbsoluteEHSectionOffsets = false;
+  DwarfEHFrameSection = "\t.section\t.eh_frame,\"aw\",@progbits";
+  DwarfExceptionSection = "\t.section\t.gcc_except_table,\"a\",@progbits";
+
+  // On Linux we must declare when we can use a non-executable stack.
+  if (ETM->getSubtarget<X86Subtarget>().isLinux())
+    NonexecutableStackDirective = "\t.section\t.note.GNU-stack,\"\",@progbits";
+}
+
+unsigned
+X86ELFTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
+                                           bool Global) const {
+  CodeModel::Model CM = ETM->getCodeModel();
+  bool is64Bit = ETM->getSubtarget<X86Subtarget>().is64Bit();
+
+  if (ETM->getRelocationModel() == Reloc::PIC_) {
+    unsigned Format = 0;
+
+    if (!is64Bit)
+      // 32 bit targets always encode pointers as 4 bytes
+      Format = DW_EH_PE_sdata4;
+    else {
+      // 64 bit targets encode pointers in 4 bytes iff:
+      // - code model is small OR
+      // - code model is medium and we're emitting externally visible symbols
+      //   or any code symbols
+      if (CM == CodeModel::Small ||
+          (CM == CodeModel::Medium && (Global ||
+                                       Reason != DwarfEncoding::Data)))
+        Format = DW_EH_PE_sdata4;
+      else
+        Format = DW_EH_PE_sdata8;
+    }
+
+    if (Global)
+      Format |= DW_EH_PE_indirect;
+
+    return (Format | DW_EH_PE_pcrel);
+  } else {
+    if (is64Bit &&
+        (CM == CodeModel::Small ||
+         (CM == CodeModel::Medium && Reason != DwarfEncoding::Data)))
+      return DW_EH_PE_udata4;
+    else
+      return DW_EH_PE_absptr;
+  }
+}
+
+X86COFFTargetAsmInfo::X86COFFTargetAsmInfo(const X86TargetMachine &TM):
+  X86TargetAsmInfo(TM) {
+  X86TM = &TM;
+
+  GlobalPrefix = "_";
+  LCOMMDirective = "\t.lcomm\t";
+  COMMDirectiveTakesAlignment = false;
+  HasDotTypeDotSizeDirective = false;
+  StaticCtorsSection = "\t.section .ctors,\"aw\"";
+  StaticDtorsSection = "\t.section .dtors,\"aw\"";
+  HiddenDirective = NULL;
+  PrivateGlobalPrefix = "L";  // Prefix for private global symbols
+  WeakRefDirective = "\t.weak\t";
+  SetDirective = "\t.set\t";
+
+  // Set up DWARF directives
+  HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
+  AbsoluteDebugSectionOffsets = true;
+  AbsoluteEHSectionOffsets = false;
+  SupportsDebugInformation = true;
+  DwarfSectionOffsetDirective = "\t.secrel32\t";
+  DwarfAbbrevSection =  "\t.section\t.debug_abbrev,\"dr\"";
+  DwarfInfoSection =    "\t.section\t.debug_info,\"dr\"";
+  DwarfLineSection =    "\t.section\t.debug_line,\"dr\"";
+  DwarfFrameSection =   "\t.section\t.debug_frame,\"dr\"";
+  DwarfPubNamesSection ="\t.section\t.debug_pubnames,\"dr\"";
+  DwarfPubTypesSection ="\t.section\t.debug_pubtypes,\"dr\"";
+  DwarfStrSection =     "\t.section\t.debug_str,\"dr\"";
+  DwarfLocSection =     "\t.section\t.debug_loc,\"dr\"";
+  DwarfARangesSection = "\t.section\t.debug_aranges,\"dr\"";
+  DwarfRangesSection =  "\t.section\t.debug_ranges,\"dr\"";
+  DwarfMacInfoSection = "\t.section\t.debug_macinfo,\"dr\"";
+}
+
+unsigned
+X86COFFTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
+                                            bool Global) const {
+  CodeModel::Model CM = X86TM->getCodeModel();
+  bool is64Bit = X86TM->getSubtarget<X86Subtarget>().is64Bit();
+
+  if (X86TM->getRelocationModel() == Reloc::PIC_) {
+    unsigned Format = 0;
+
+    if (!is64Bit)
+      // 32 bit targets always encode pointers as 4 bytes
+      Format = DW_EH_PE_sdata4;
+    else {
+      // 64 bit targets encode pointers in 4 bytes iff:
+      // - code model is small OR
+      // - code model is medium and we're emitting externally visible symbols
+      //   or any code symbols
+      if (CM == CodeModel::Small ||
+          (CM == CodeModel::Medium && (Global ||
+                                       Reason != DwarfEncoding::Data)))
+        Format = DW_EH_PE_sdata4;
+      else
+        Format = DW_EH_PE_sdata8;
+    }
+
+    if (Global)
+      Format |= DW_EH_PE_indirect;
+
+    return (Format | DW_EH_PE_pcrel);
+  } else {
+    if (is64Bit &&
+        (CM == CodeModel::Small ||
+         (CM == CodeModel::Medium && Reason != DwarfEncoding::Data)))
+      return DW_EH_PE_udata4;
+    else
+      return DW_EH_PE_absptr;
+  }
+}
+
+std::string
+X86COFFTargetAsmInfo::UniqueSectionForGlobal(const GlobalValue* GV,
+                                             SectionKind::Kind kind) const {
+  switch (kind) {
+   case SectionKind::Text:
+    return ".text$linkonce" + GV->getName();
+   case SectionKind::Data:
+   case SectionKind::BSS:
+   case SectionKind::ThreadData:
+   case SectionKind::ThreadBSS:
+    return ".data$linkonce" + GV->getName();
+   case SectionKind::ROData:
+   case SectionKind::RODataMergeConst:
+   case SectionKind::RODataMergeStr:
+    return ".rdata$linkonce" + GV->getName();
+   default:
+    assert(0 && "Unknown section kind");
+  }
+}
+
+std::string X86COFFTargetAsmInfo::printSectionFlags(unsigned flags) const {
+  std::string Flags = ",\"";
+
+  if (flags & SectionFlags::Code)
+    Flags += 'x';
+  if (flags & SectionFlags::Writeable)
+    Flags += 'w';
+
+  Flags += "\"";
+
+  return Flags;
+}
+
+X86WinTargetAsmInfo::X86WinTargetAsmInfo(const X86TargetMachine &TM):
+  X86TargetAsmInfo(TM) {
+  GlobalPrefix = "_";
+  CommentString = ";";
+
+  PrivateGlobalPrefix = "$";
+  AlignDirective = "\talign\t";
+  ZeroDirective = "\tdb\t";
+  ZeroDirectiveSuffix = " dup(0)";
+  AsciiDirective = "\tdb\t";
+  AscizDirective = 0;
+  Data8bitsDirective = "\tdb\t";
+  Data16bitsDirective = "\tdw\t";
+  Data32bitsDirective = "\tdd\t";
+  Data64bitsDirective = "\tdq\t";
+  HasDotTypeDotSizeDirective = false;
+
+  TextSection = getUnnamedSection("_text", SectionFlags::Code);
+  DataSection = getUnnamedSection("_data", SectionFlags::Writeable);
+
+  JumpTableDataSection = NULL;
+  SwitchToSectionDirective = "";
+  TextSectionStartSuffix = "\tsegment 'CODE'";
+  DataSectionStartSuffix = "\tsegment 'DATA'";
+  SectionEndDirectiveSuffix = "\tends\n";
+}