1 //===--- lib/CodeGen/DIE.cpp - DWARF Info Entries -------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // Data structures for DWARF info entries.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "llvm/CodeGen/DIE.h"
15 #include "DwarfCompileUnit.h"
16 #include "DwarfDebug.h"
17 #include "DwarfUnit.h"
18 #include "llvm/ADT/Twine.h"
19 #include "llvm/CodeGen/AsmPrinter.h"
20 #include "llvm/IR/DataLayout.h"
21 #include "llvm/MC/MCAsmInfo.h"
22 #include "llvm/MC/MCContext.h"
23 #include "llvm/MC/MCStreamer.h"
24 #include "llvm/MC/MCSymbol.h"
25 #include "llvm/Support/Debug.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/Format.h"
28 #include "llvm/Support/FormattedStream.h"
29 #include "llvm/Support/LEB128.h"
30 #include "llvm/Support/MD5.h"
31 using namespace llvm;
32 
33 //===----------------------------------------------------------------------===//
34 // DIEAbbrevData Implementation
35 //===----------------------------------------------------------------------===//
36 
37 /// Profile - Used to gather unique data for the abbreviation folding set.
38 ///
39 void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const {
40   // Explicitly cast to an integer type for which FoldingSetNodeID has
41   // overloads.  Otherwise MSVC 2010 thinks this call is ambiguous.
42   ID.AddInteger(unsigned(Attribute));
43   ID.AddInteger(unsigned(Form));
44 }
45 
46 //===----------------------------------------------------------------------===//
47 // DIEAbbrev Implementation
48 //===----------------------------------------------------------------------===//
49 
50 /// Profile - Used to gather unique data for the abbreviation folding set.
51 ///
52 void DIEAbbrev::Profile(FoldingSetNodeID &ID) const {
53   ID.AddInteger(unsigned(Tag));
54   ID.AddInteger(unsigned(Children));
55 
56   // For each attribute description.
57   for (unsigned i = 0, N = Data.size(); i < N; ++i)
58     Data[i].Profile(ID);
59 }
60 
61 /// Emit - Print the abbreviation using the specified asm printer.
62 ///
63 void DIEAbbrev::Emit(AsmPrinter *AP) const {
64   // Emit its Dwarf tag type.
65   AP->EmitULEB128(Tag, dwarf::TagString(Tag));
66 
67   // Emit whether it has children DIEs.
68   AP->EmitULEB128((unsigned)Children, dwarf::ChildrenString(Children));
69 
70   // For each attribute description.
71   for (unsigned i = 0, N = Data.size(); i < N; ++i) {
72     const DIEAbbrevData &AttrData = Data[i];
73 
74     // Emit attribute type.
75     AP->EmitULEB128(AttrData.getAttribute(),
76                     dwarf::AttributeString(AttrData.getAttribute()));
77 
78     // Emit form type.
79     AP->EmitULEB128(AttrData.getForm(),
80                     dwarf::FormEncodingString(AttrData.getForm()));
81   }
82 
83   // Mark end of abbreviation.
84   AP->EmitULEB128(0, "EOM(1)");
85   AP->EmitULEB128(0, "EOM(2)");
86 }
87 
88 #ifndef NDEBUG
89 void DIEAbbrev::print(raw_ostream &O) {
90   O << "Abbreviation @"
91     << format("0x%lx", (long)(intptr_t)this)
92     << "  "
93     << dwarf::TagString(Tag)
94     << " "
95     << dwarf::ChildrenString(Children)
96     << '\n';
97 
98   for (unsigned i = 0, N = Data.size(); i < N; ++i) {
99     O << "  "
100       << dwarf::AttributeString(Data[i].getAttribute())
101       << "  "
102       << dwarf::FormEncodingString(Data[i].getForm())
103       << '\n';
104   }
105 }
106 void DIEAbbrev::dump() { print(dbgs()); }
107 #endif
108 
109 /// Climb up the parent chain to get the unit DIE to which this DIE
110 /// belongs.
111 const DIE *DIE::getUnit() const {
112   const DIE *Cu = getUnitOrNull();
113   assert(Cu && "We should not have orphaned DIEs.");
114   return Cu;
115 }
116 
117 /// Climb up the parent chain to get the unit DIE this DIE belongs
118 /// to. Return NULL if DIE is not added to an owner yet.
119 const DIE *DIE::getUnitOrNull() const {
120   const DIE *p = this;
121   while (p) {
122     if (p->getTag() == dwarf::DW_TAG_compile_unit ||
123         p->getTag() == dwarf::DW_TAG_type_unit)
124       return p;
125     p = p->getParent();
126   }
127   return nullptr;
128 }
129 
130 DIEValue *DIE::findAttribute(dwarf::Attribute Attribute) const {
131   const SmallVectorImpl<DIEValue *> &Values = getValues();
132   const DIEAbbrev &Abbrevs = getAbbrev();
133 
134   // Iterate through all the attributes until we find the one we're
135   // looking for, if we can't find it return NULL.
136   for (size_t i = 0; i < Values.size(); ++i)
137     if (Abbrevs.getData()[i].getAttribute() == Attribute)
138       return Values[i];
139   return nullptr;
140 }
141 
142 #ifndef NDEBUG
143 void DIE::print(raw_ostream &O, unsigned IndentCount) const {
144   const std::string Indent(IndentCount, ' ');
145   bool isBlock = Abbrev.getTag() == 0;
146 
147   if (!isBlock) {
148     O << Indent
149       << "Die: "
150       << format("0x%lx", (long)(intptr_t)this)
151       << ", Offset: " << Offset
152       << ", Size: " << Size << "\n";
153 
154     O << Indent
155       << dwarf::TagString(Abbrev.getTag())
156       << " "
157       << dwarf::ChildrenString(Abbrev.hasChildren()) << "\n";
158   } else {
159     O << "Size: " << Size << "\n";
160   }
161 
162   const SmallVectorImpl<DIEAbbrevData> &Data = Abbrev.getData();
163 
164   IndentCount += 2;
165   for (unsigned i = 0, N = Data.size(); i < N; ++i) {
166     O << Indent;
167 
168     if (!isBlock)
169       O << dwarf::AttributeString(Data[i].getAttribute());
170     else
171       O << "Blk[" << i << "]";
172 
173     O <<  "  "
174       << dwarf::FormEncodingString(Data[i].getForm())
175       << " ";
176     Values[i]->print(O);
177     O << "\n";
178   }
179   IndentCount -= 2;
180 
181   for (unsigned j = 0, M = Children.size(); j < M; ++j) {
182     Children[j]->print(O, IndentCount+4);
183   }
184 
185   if (!isBlock) O << "\n";
186 }
187 
188 void DIE::dump() {
189   print(dbgs());
190 }
191 #endif
192 
193 void DIEValue::anchor() { }
194 
195 #ifndef NDEBUG
196 void DIEValue::dump() const {
197   print(dbgs());
198 }
199 #endif
200 
201 //===----------------------------------------------------------------------===//
202 // DIEInteger Implementation
203 //===----------------------------------------------------------------------===//
204 
205 /// EmitValue - Emit integer of appropriate size.
206 ///
207 void DIEInteger::EmitValue(AsmPrinter *Asm, dwarf::Form Form) const {
208   unsigned Size = ~0U;
209   switch (Form) {
210   case dwarf::DW_FORM_flag_present:
211     // Emit something to keep the lines and comments in sync.
212     // FIXME: Is there a better way to do this?
213     Asm->OutStreamer.AddBlankLine();
214     return;
215   case dwarf::DW_FORM_flag:  // Fall thru
216   case dwarf::DW_FORM_ref1:  // Fall thru
217   case dwarf::DW_FORM_data1: Size = 1; break;
218   case dwarf::DW_FORM_ref2:  // Fall thru
219   case dwarf::DW_FORM_data2: Size = 2; break;
220   case dwarf::DW_FORM_sec_offset: // Fall thru
221   case dwarf::DW_FORM_ref4:  // Fall thru
222   case dwarf::DW_FORM_data4: Size = 4; break;
223   case dwarf::DW_FORM_ref8:  // Fall thru
224   case dwarf::DW_FORM_ref_sig8:  // Fall thru
225   case dwarf::DW_FORM_data8: Size = 8; break;
226   case dwarf::DW_FORM_GNU_str_index: Asm->EmitULEB128(Integer); return;
227   case dwarf::DW_FORM_GNU_addr_index: Asm->EmitULEB128(Integer); return;
228   case dwarf::DW_FORM_udata: Asm->EmitULEB128(Integer); return;
229   case dwarf::DW_FORM_sdata: Asm->EmitSLEB128(Integer); return;
230   case dwarf::DW_FORM_addr:
231     Size = Asm->getDataLayout().getPointerSize(); break;
232   default: llvm_unreachable("DIE Value form not supported yet");
233   }
234   Asm->OutStreamer.EmitIntValue(Integer, Size);
235 }
236 
237 /// SizeOf - Determine size of integer value in bytes.
238 ///
239 unsigned DIEInteger::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
240   switch (Form) {
241   case dwarf::DW_FORM_flag_present: return 0;
242   case dwarf::DW_FORM_flag:  // Fall thru
243   case dwarf::DW_FORM_ref1:  // Fall thru
244   case dwarf::DW_FORM_data1: return sizeof(int8_t);
245   case dwarf::DW_FORM_ref2:  // Fall thru
246   case dwarf::DW_FORM_data2: return sizeof(int16_t);
247   case dwarf::DW_FORM_sec_offset: // Fall thru
248   case dwarf::DW_FORM_ref4:  // Fall thru
249   case dwarf::DW_FORM_data4: return sizeof(int32_t);
250   case dwarf::DW_FORM_ref8:  // Fall thru
251   case dwarf::DW_FORM_ref_sig8:  // Fall thru
252   case dwarf::DW_FORM_data8: return sizeof(int64_t);
253   case dwarf::DW_FORM_GNU_str_index: return getULEB128Size(Integer);
254   case dwarf::DW_FORM_GNU_addr_index: return getULEB128Size(Integer);
255   case dwarf::DW_FORM_udata: return getULEB128Size(Integer);
256   case dwarf::DW_FORM_sdata: return getSLEB128Size(Integer);
257   case dwarf::DW_FORM_addr:  return AP->getDataLayout().getPointerSize();
258   default: llvm_unreachable("DIE Value form not supported yet");
259   }
260 }
261 
262 #ifndef NDEBUG
263 void DIEInteger::print(raw_ostream &O) const {
264   O << "Int: " << (int64_t)Integer << "  0x";
265   O.write_hex(Integer);
266 }
267 #endif
268 
269 //===----------------------------------------------------------------------===//
270 // DIEExpr Implementation
271 //===----------------------------------------------------------------------===//
272 
273 /// EmitValue - Emit expression value.
274 ///
275 void DIEExpr::EmitValue(AsmPrinter *AP, dwarf::Form Form) const {
276   AP->OutStreamer.EmitValue(Expr, SizeOf(AP, Form));
277 }
278 
279 /// SizeOf - Determine size of expression value in bytes.
280 ///
281 unsigned DIEExpr::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
282   if (Form == dwarf::DW_FORM_data4) return 4;
283   if (Form == dwarf::DW_FORM_sec_offset) return 4;
284   if (Form == dwarf::DW_FORM_strp) return 4;
285   return AP->getDataLayout().getPointerSize();
286 }
287 
288 #ifndef NDEBUG
289 void DIEExpr::print(raw_ostream &O) const {
290   O << "Expr: ";
291   Expr->print(O);
292 }
293 #endif
294 
295 //===----------------------------------------------------------------------===//
296 // DIELabel Implementation
297 //===----------------------------------------------------------------------===//
298 
299 /// EmitValue - Emit label value.
300 ///
301 void DIELabel::EmitValue(AsmPrinter *AP, dwarf::Form Form) const {
302   AP->EmitLabelReference(Label, SizeOf(AP, Form),
303                          Form == dwarf::DW_FORM_strp ||
304                              Form == dwarf::DW_FORM_sec_offset ||
305                              Form == dwarf::DW_FORM_ref_addr);
306 }
307 
308 /// SizeOf - Determine size of label value in bytes.
309 ///
310 unsigned DIELabel::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
311   if (Form == dwarf::DW_FORM_data4) return 4;
312   if (Form == dwarf::DW_FORM_sec_offset) return 4;
313   if (Form == dwarf::DW_FORM_strp) return 4;
314   return AP->getDataLayout().getPointerSize();
315 }
316 
317 #ifndef NDEBUG
318 void DIELabel::print(raw_ostream &O) const {
319   O << "Lbl: " << Label->getName();
320 }
321 #endif
322 
323 //===----------------------------------------------------------------------===//
324 // DIEDelta Implementation
325 //===----------------------------------------------------------------------===//
326 
327 /// EmitValue - Emit delta value.
328 ///
329 void DIEDelta::EmitValue(AsmPrinter *AP, dwarf::Form Form) const {
330   AP->EmitLabelDifference(LabelHi, LabelLo, SizeOf(AP, Form));
331 }
332 
333 /// SizeOf - Determine size of delta value in bytes.
334 ///
335 unsigned DIEDelta::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
336   if (Form == dwarf::DW_FORM_data4) return 4;
337   if (Form == dwarf::DW_FORM_sec_offset) return 4;
338   if (Form == dwarf::DW_FORM_strp) return 4;
339   return AP->getDataLayout().getPointerSize();
340 }
341 
342 #ifndef NDEBUG
343 void DIEDelta::print(raw_ostream &O) const {
344   O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName();
345 }
346 #endif
347 
348 //===----------------------------------------------------------------------===//
349 // DIEString Implementation
350 //===----------------------------------------------------------------------===//
351 
352 /// EmitValue - Emit string value.
353 ///
354 void DIEString::EmitValue(AsmPrinter *AP, dwarf::Form Form) const {
355   Access->EmitValue(AP, Form);
356 }
357 
358 /// SizeOf - Determine size of delta value in bytes.
359 ///
360 unsigned DIEString::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
361   return Access->SizeOf(AP, Form);
362 }
363 
364 #ifndef NDEBUG
365 void DIEString::print(raw_ostream &O) const {
366   O << "String: " << Str << "\tSymbol: ";
367   Access->print(O);
368 }
369 #endif
370 
371 //===----------------------------------------------------------------------===//
372 // DIEEntry Implementation
373 //===----------------------------------------------------------------------===//
374 
375 /// Emit something like ".long Hi+Offset-Lo" where the size in bytes of the
376 /// directive is specified by Size and Hi/Lo specify the labels.
377 static void emitLabelOffsetDifference(MCStreamer &Streamer, const MCSymbol *Hi,
378                                       uint64_t Offset, const MCSymbol *Lo,
379                                       unsigned Size) {
380   MCContext &Context = Streamer.getContext();
381 
382   // Emit Hi+Offset - Lo
383   // Get the Hi+Offset expression.
384   const MCExpr *Plus =
385       MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(Hi, Context),
386                               MCConstantExpr::Create(Offset, Context), Context);
387 
388   // Get the Hi+Offset-Lo expression.
389   const MCExpr *Diff = MCBinaryExpr::CreateSub(
390       Plus, MCSymbolRefExpr::Create(Lo, Context), Context);
391 
392   // Otherwise, emit with .set (aka assignment).
393   MCSymbol *SetLabel = Context.CreateTempSymbol();
394   Streamer.EmitAssignment(SetLabel, Diff);
395   Streamer.EmitSymbolValue(SetLabel, Size);
396 }
397 
398 /// EmitValue - Emit debug information entry offset.
399 ///
400 void DIEEntry::EmitValue(AsmPrinter *AP, dwarf::Form Form) const {
401 
402   if (Form == dwarf::DW_FORM_ref_addr) {
403     const DwarfDebug *DD = AP->getDwarfDebug();
404     unsigned Addr = Entry.getOffset();
405     assert(!DD->useSplitDwarf() && "TODO: dwo files can't have relocations.");
406     // For DW_FORM_ref_addr, output the offset from beginning of debug info
407     // section. Entry->getOffset() returns the offset from start of the
408     // compile unit.
409     DwarfCompileUnit *CU = DD->lookupUnit(Entry.getUnit());
410     assert(CU && "CUDie should belong to a CU.");
411     Addr += CU->getDebugInfoOffset();
412     if (AP->MAI->doesDwarfUseRelocationsAcrossSections())
413       AP->EmitLabelPlusOffset(CU->getSectionSym(), Addr,
414                               DIEEntry::getRefAddrSize(AP));
415     else
416       emitLabelOffsetDifference(AP->OutStreamer, CU->getSectionSym(), Addr,
417                                 CU->getSectionSym(),
418                                 DIEEntry::getRefAddrSize(AP));
419   } else
420     AP->EmitInt32(Entry.getOffset());
421 }
422 
423 unsigned DIEEntry::getRefAddrSize(AsmPrinter *AP) {
424   // DWARF4: References that use the attribute form DW_FORM_ref_addr are
425   // specified to be four bytes in the DWARF 32-bit format and eight bytes
426   // in the DWARF 64-bit format, while DWARF Version 2 specifies that such
427   // references have the same size as an address on the target system.
428   const DwarfDebug *DD = AP->getDwarfDebug();
429   assert(DD && "Expected Dwarf Debug info to be available");
430   if (DD->getDwarfVersion() == 2)
431     return AP->getDataLayout().getPointerSize();
432   return sizeof(int32_t);
433 }
434 
435 #ifndef NDEBUG
436 void DIEEntry::print(raw_ostream &O) const {
437   O << format("Die: 0x%lx", (long)(intptr_t)&Entry);
438 }
439 #endif
440 
441 //===----------------------------------------------------------------------===//
442 // DIETypeSignature Implementation
443 //===----------------------------------------------------------------------===//
444 void DIETypeSignature::EmitValue(AsmPrinter *Asm, dwarf::Form Form) const {
445   assert(Form == dwarf::DW_FORM_ref_sig8);
446   Asm->OutStreamer.EmitIntValue(Unit.getTypeSignature(), 8);
447 }
448 
449 #ifndef NDEBUG
450 void DIETypeSignature::print(raw_ostream &O) const {
451   O << format("Type Unit: 0x%lx", Unit.getTypeSignature());
452 }
453 
454 void DIETypeSignature::dump() const { print(dbgs()); }
455 #endif
456 
457 //===----------------------------------------------------------------------===//
458 // DIELoc Implementation
459 //===----------------------------------------------------------------------===//
460 
461 /// ComputeSize - calculate the size of the location expression.
462 ///
463 unsigned DIELoc::ComputeSize(AsmPrinter *AP) const {
464   if (!Size) {
465     const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
466     for (unsigned i = 0, N = Values.size(); i < N; ++i)
467       Size += Values[i]->SizeOf(AP, AbbrevData[i].getForm());
468   }
469 
470   return Size;
471 }
472 
473 /// EmitValue - Emit location data.
474 ///
475 void DIELoc::EmitValue(AsmPrinter *Asm, dwarf::Form Form) const {
476   switch (Form) {
477   default: llvm_unreachable("Improper form for block");
478   case dwarf::DW_FORM_block1: Asm->EmitInt8(Size);    break;
479   case dwarf::DW_FORM_block2: Asm->EmitInt16(Size);   break;
480   case dwarf::DW_FORM_block4: Asm->EmitInt32(Size);   break;
481   case dwarf::DW_FORM_block:
482   case dwarf::DW_FORM_exprloc:
483     Asm->EmitULEB128(Size); break;
484   }
485 
486   const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
487   for (unsigned i = 0, N = Values.size(); i < N; ++i)
488     Values[i]->EmitValue(Asm, AbbrevData[i].getForm());
489 }
490 
491 /// SizeOf - Determine size of location data in bytes.
492 ///
493 unsigned DIELoc::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
494   switch (Form) {
495   case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
496   case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
497   case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
498   case dwarf::DW_FORM_block:
499   case dwarf::DW_FORM_exprloc:
500     return Size + getULEB128Size(Size);
501   default: llvm_unreachable("Improper form for block");
502   }
503 }
504 
505 #ifndef NDEBUG
506 void DIELoc::print(raw_ostream &O) const {
507   O << "ExprLoc: ";
508   DIE::print(O, 5);
509 }
510 #endif
511 
512 //===----------------------------------------------------------------------===//
513 // DIEBlock Implementation
514 //===----------------------------------------------------------------------===//
515 
516 /// ComputeSize - calculate the size of the block.
517 ///
518 unsigned DIEBlock::ComputeSize(AsmPrinter *AP) const {
519   if (!Size) {
520     const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
521     for (unsigned i = 0, N = Values.size(); i < N; ++i)
522       Size += Values[i]->SizeOf(AP, AbbrevData[i].getForm());
523   }
524 
525   return Size;
526 }
527 
528 /// EmitValue - Emit block data.
529 ///
530 void DIEBlock::EmitValue(AsmPrinter *Asm, dwarf::Form Form) const {
531   switch (Form) {
532   default: llvm_unreachable("Improper form for block");
533   case dwarf::DW_FORM_block1: Asm->EmitInt8(Size);    break;
534   case dwarf::DW_FORM_block2: Asm->EmitInt16(Size);   break;
535   case dwarf::DW_FORM_block4: Asm->EmitInt32(Size);   break;
536   case dwarf::DW_FORM_block:  Asm->EmitULEB128(Size); break;
537   }
538 
539   const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
540   for (unsigned i = 0, N = Values.size(); i < N; ++i)
541     Values[i]->EmitValue(Asm, AbbrevData[i].getForm());
542 }
543 
544 /// SizeOf - Determine size of block data in bytes.
545 ///
546 unsigned DIEBlock::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
547   switch (Form) {
548   case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
549   case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
550   case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
551   case dwarf::DW_FORM_block:  return Size + getULEB128Size(Size);
552   default: llvm_unreachable("Improper form for block");
553   }
554 }
555 
556 #ifndef NDEBUG
557 void DIEBlock::print(raw_ostream &O) const {
558   O << "Blk: ";
559   DIE::print(O, 5);
560 }
561 #endif
562 
563 //===----------------------------------------------------------------------===//
564 // DIELocList Implementation
565 //===----------------------------------------------------------------------===//
566 
567 unsigned DIELocList::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
568   if (Form == dwarf::DW_FORM_data4)
569     return 4;
570   if (Form == dwarf::DW_FORM_sec_offset)
571     return 4;
572   return AP->getDataLayout().getPointerSize();
573 }
574 
575 /// EmitValue - Emit label value.
576 ///
577 void DIELocList::EmitValue(AsmPrinter *AP, dwarf::Form Form) const {
578   DwarfDebug *DD = AP->getDwarfDebug();
579   MCSymbol *Label = DD->getDebugLocEntries()[Index].Label;
580 
581   if (AP->MAI->doesDwarfUseRelocationsAcrossSections() && !DD->useSplitDwarf())
582     AP->EmitSectionOffset(Label, DD->getDebugLocSym());
583   else
584     AP->EmitLabelDifference(Label, DD->getDebugLocSym(), 4);
585 }
586 
587 #ifndef NDEBUG
588 void DIELocList::print(raw_ostream &O) const {
589   O << "LocList: " << Index;
590 
591 }
592 #endif
593