LLVM 19.0.0git
Dwarf.h
Go to the documentation of this file.
1//===-- llvm/BinaryFormat/Dwarf.h ---Dwarf Constants-------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9/// \file
10/// This file contains constants used for implementing Dwarf
11/// debug support.
12///
13/// For details on the Dwarf specfication see the latest DWARF Debugging
14/// Information Format standard document on http://www.dwarfstd.org. This
15/// file often includes support for non-released standard features.
16//
17//===----------------------------------------------------------------------===//
18
19#ifndef LLVM_BINARYFORMAT_DWARF_H
20#define LLVM_BINARYFORMAT_DWARF_H
21
25#include "llvm/Support/Format.h"
28
29#include <limits>
30
31namespace llvm {
32class StringRef;
33
34namespace dwarf {
35
36//===----------------------------------------------------------------------===//
37// DWARF constants as gleaned from the DWARF Debugging Information Format V.5
38// reference manual http://www.dwarfstd.org/.
39//
40
41// Do not mix the following two enumerations sets. DW_TAG_invalid changes the
42// enumeration base type.
43
45 /// LLVM mock tags (see also llvm/BinaryFormat/Dwarf.def).
46 /// \{
47 DW_TAG_invalid = ~0U, ///< Tag for invalid results.
48 DW_VIRTUALITY_invalid = ~0U, ///< Virtuality for invalid results.
49 DW_MACINFO_invalid = ~0U, ///< Macinfo type for invalid results.
50 /// \}
51
52 /// Special values for an initial length field.
53 /// \{
54 DW_LENGTH_lo_reserved = 0xfffffff0, ///< Lower bound of the reserved range.
55 DW_LENGTH_DWARF64 = 0xffffffff, ///< Indicator of 64-bit DWARF format.
56 DW_LENGTH_hi_reserved = 0xffffffff, ///< Upper bound of the reserved range.
57 /// \}
58
59 /// Other constants.
60 /// \{
61 DWARF_VERSION = 4, ///< Default dwarf version we output.
62 DW_PUBTYPES_VERSION = 2, ///< Section version number for .debug_pubtypes.
63 DW_PUBNAMES_VERSION = 2, ///< Section version number for .debug_pubnames.
64 DW_ARANGES_VERSION = 2, ///< Section version number for .debug_aranges.
65 /// \}
66
67 /// Identifiers we use to distinguish vendor extensions.
68 /// \{
69 DWARF_VENDOR_DWARF = 0, ///< Defined in v2 or later of the DWARF standard.
87 ///\}
88};
89
90/// Constants that define the DWARF format as 32 or 64 bit.
91enum DwarfFormat : uint8_t { DWARF32, DWARF64 };
92
93/// Special ID values that distinguish a CIE from a FDE in DWARF CFI.
94/// Not inside an enum because a 64-bit value is needed.
95/// @{
96const uint32_t DW_CIE_ID = UINT32_MAX;
98/// @}
99
100/// Identifier of an invalid DIE offset in the .debug_info section.
101const uint32_t DW_INVALID_OFFSET = UINT32_MAX;
102
103enum Tag : uint16_t {
104#define HANDLE_DW_TAG(ID, NAME, VERSION, VENDOR, KIND) DW_TAG_##NAME = ID,
105#include "llvm/BinaryFormat/Dwarf.def"
108 DW_TAG_user_base = 0x1000 ///< Recommended base for user tags.
110
111inline bool isType(Tag T) {
112 switch (T) {
113 default:
114 return false;
115#define HANDLE_DW_TAG(ID, NAME, VERSION, VENDOR, KIND) \
116 case DW_TAG_##NAME: \
117 return (KIND == DW_KIND_TYPE);
118#include "llvm/BinaryFormat/Dwarf.def"
119 }
120}
121
122/// Attributes.
124#define HANDLE_DW_AT(ID, NAME, VERSION, VENDOR) DW_AT_##NAME = ID,
125#include "llvm/BinaryFormat/Dwarf.def"
128};
129
131#define HANDLE_DW_FORM(ID, NAME, VERSION, VENDOR) DW_FORM_##NAME = ID,
132#include "llvm/BinaryFormat/Dwarf.def"
133 DW_FORM_lo_user = 0x1f00, ///< Not specified by DWARF.
134};
135
137#define HANDLE_DW_OP(ID, NAME, VERSION, VENDOR) DW_OP_##NAME = ID,
138#include "llvm/BinaryFormat/Dwarf.def"
141 DW_OP_LLVM_fragment = 0x1000, ///< Only used in LLVM metadata.
142 DW_OP_LLVM_convert = 0x1001, ///< Only used in LLVM metadata.
143 DW_OP_LLVM_tag_offset = 0x1002, ///< Only used in LLVM metadata.
144 DW_OP_LLVM_entry_value = 0x1003, ///< Only used in LLVM metadata.
145 DW_OP_LLVM_implicit_pointer = 0x1004, ///< Only used in LLVM metadata.
146 DW_OP_LLVM_arg = 0x1005, ///< Only used in LLVM metadata.
147};
148
150#define HANDLE_DW_OP_LLVM_USEROP(ID, NAME) DW_OP_LLVM_##NAME = ID,
151#include "llvm/BinaryFormat/Dwarf.def"
152};
153
154enum TypeKind : uint8_t {
155#define HANDLE_DW_ATE(ID, NAME, VERSION, VENDOR) DW_ATE_##NAME = ID,
156#include "llvm/BinaryFormat/Dwarf.def"
158 DW_ATE_hi_user = 0xff
160
162 // Decimal sign attribute values
169
171 // Endianity attribute values
172#define HANDLE_DW_END(ID, NAME) DW_END_##NAME = ID,
173#include "llvm/BinaryFormat/Dwarf.def"
175 DW_END_hi_user = 0xff
177
179 // Accessibility codes
182 DW_ACCESS_private = 0x03
184
186 // Visibility codes
189 DW_VIS_qualified = 0x03
191
193#define HANDLE_DW_VIRTUALITY(ID, NAME) DW_VIRTUALITY_##NAME = ID,
194#include "llvm/BinaryFormat/Dwarf.def"
195 DW_VIRTUALITY_max = 0x02
197
199#define HANDLE_DW_DEFAULTED(ID, NAME) DW_DEFAULTED_##NAME = ID,
200#include "llvm/BinaryFormat/Dwarf.def"
201 DW_DEFAULTED_max = 0x02
203
205#define HANDLE_DW_LANG(ID, NAME, LOWER_BOUND, VERSION, VENDOR) \
206 DW_LANG_##NAME = ID,
207#include "llvm/BinaryFormat/Dwarf.def"
209 DW_LANG_hi_user = 0xffff
211
213 bool result = false;
214 // Deliberately enumerate all the language options so we get a warning when
215 // new language options are added (-Wswitch) that'll hopefully help keep this
216 // switch up-to-date when new C++ versions are added.
217 switch (S) {
218 case DW_LANG_C_plus_plus:
219 case DW_LANG_C_plus_plus_03:
220 case DW_LANG_C_plus_plus_11:
221 case DW_LANG_C_plus_plus_14:
222 case DW_LANG_C_plus_plus_17:
223 case DW_LANG_C_plus_plus_20:
224 result = true;
225 break;
226 case DW_LANG_C89:
227 case DW_LANG_C:
228 case DW_LANG_Ada83:
229 case DW_LANG_Cobol74:
230 case DW_LANG_Cobol85:
231 case DW_LANG_Fortran77:
232 case DW_LANG_Fortran90:
233 case DW_LANG_Pascal83:
234 case DW_LANG_Modula2:
235 case DW_LANG_Java:
236 case DW_LANG_C99:
237 case DW_LANG_Ada95:
238 case DW_LANG_Fortran95:
239 case DW_LANG_PLI:
240 case DW_LANG_ObjC:
241 case DW_LANG_ObjC_plus_plus:
242 case DW_LANG_UPC:
243 case DW_LANG_D:
244 case DW_LANG_Python:
245 case DW_LANG_OpenCL:
246 case DW_LANG_Go:
247 case DW_LANG_Modula3:
248 case DW_LANG_Haskell:
249 case DW_LANG_OCaml:
250 case DW_LANG_Rust:
251 case DW_LANG_C11:
252 case DW_LANG_Swift:
253 case DW_LANG_Julia:
254 case DW_LANG_Dylan:
255 case DW_LANG_Fortran03:
256 case DW_LANG_Fortran08:
257 case DW_LANG_RenderScript:
258 case DW_LANG_BLISS:
259 case DW_LANG_Mips_Assembler:
260 case DW_LANG_GOOGLE_RenderScript:
261 case DW_LANG_BORLAND_Delphi:
262 case DW_LANG_lo_user:
263 case DW_LANG_hi_user:
264 case DW_LANG_Kotlin:
265 case DW_LANG_Zig:
266 case DW_LANG_Crystal:
267 case DW_LANG_C17:
268 case DW_LANG_Fortran18:
269 case DW_LANG_Ada2005:
270 case DW_LANG_Ada2012:
271 case DW_LANG_Mojo:
272 result = false;
273 break;
274 }
275
276 return result;
277}
278
279inline bool isFortran(SourceLanguage S) {
280 bool result = false;
281 // Deliberately enumerate all the language options so we get a warning when
282 // new language options are added (-Wswitch) that'll hopefully help keep this
283 // switch up-to-date when new Fortran versions are added.
284 switch (S) {
285 case DW_LANG_Fortran77:
286 case DW_LANG_Fortran90:
287 case DW_LANG_Fortran95:
288 case DW_LANG_Fortran03:
289 case DW_LANG_Fortran08:
290 case DW_LANG_Fortran18:
291 result = true;
292 break;
293 case DW_LANG_C89:
294 case DW_LANG_C:
295 case DW_LANG_Ada83:
296 case DW_LANG_C_plus_plus:
297 case DW_LANG_Cobol74:
298 case DW_LANG_Cobol85:
299 case DW_LANG_Pascal83:
300 case DW_LANG_Modula2:
301 case DW_LANG_Java:
302 case DW_LANG_C99:
303 case DW_LANG_Ada95:
304 case DW_LANG_PLI:
305 case DW_LANG_ObjC:
306 case DW_LANG_ObjC_plus_plus:
307 case DW_LANG_UPC:
308 case DW_LANG_D:
309 case DW_LANG_Python:
310 case DW_LANG_OpenCL:
311 case DW_LANG_Go:
312 case DW_LANG_Modula3:
313 case DW_LANG_Haskell:
314 case DW_LANG_C_plus_plus_03:
315 case DW_LANG_C_plus_plus_11:
316 case DW_LANG_OCaml:
317 case DW_LANG_Rust:
318 case DW_LANG_C11:
319 case DW_LANG_Swift:
320 case DW_LANG_Julia:
321 case DW_LANG_Dylan:
322 case DW_LANG_C_plus_plus_14:
323 case DW_LANG_RenderScript:
324 case DW_LANG_BLISS:
325 case DW_LANG_Mips_Assembler:
326 case DW_LANG_GOOGLE_RenderScript:
327 case DW_LANG_BORLAND_Delphi:
328 case DW_LANG_lo_user:
329 case DW_LANG_hi_user:
330 case DW_LANG_Kotlin:
331 case DW_LANG_Zig:
332 case DW_LANG_Crystal:
333 case DW_LANG_C_plus_plus_17:
334 case DW_LANG_C_plus_plus_20:
335 case DW_LANG_C17:
336 case DW_LANG_Ada2005:
337 case DW_LANG_Ada2012:
338 case DW_LANG_Mojo:
339 result = false;
340 break;
341 }
342
343 return result;
344}
345
346inline bool isC(SourceLanguage S) {
347 // Deliberately enumerate all the language options so we get a warning when
348 // new language options are added (-Wswitch) that'll hopefully help keep this
349 // switch up-to-date when new C++ versions are added.
350 switch (S) {
351 case DW_LANG_C11:
352 case DW_LANG_C17:
353 case DW_LANG_C89:
354 case DW_LANG_C99:
355 case DW_LANG_C:
356 case DW_LANG_ObjC:
357 return true;
358 case DW_LANG_C_plus_plus:
359 case DW_LANG_C_plus_plus_03:
360 case DW_LANG_C_plus_plus_11:
361 case DW_LANG_C_plus_plus_14:
362 case DW_LANG_C_plus_plus_17:
363 case DW_LANG_C_plus_plus_20:
364 case DW_LANG_Ada83:
365 case DW_LANG_Cobol74:
366 case DW_LANG_Cobol85:
367 case DW_LANG_Fortran77:
368 case DW_LANG_Fortran90:
369 case DW_LANG_Pascal83:
370 case DW_LANG_Modula2:
371 case DW_LANG_Java:
372 case DW_LANG_Ada95:
373 case DW_LANG_Fortran95:
374 case DW_LANG_PLI:
375 case DW_LANG_ObjC_plus_plus:
376 case DW_LANG_UPC:
377 case DW_LANG_D:
378 case DW_LANG_Python:
379 case DW_LANG_OpenCL:
380 case DW_LANG_Go:
381 case DW_LANG_Modula3:
382 case DW_LANG_Haskell:
383 case DW_LANG_OCaml:
384 case DW_LANG_Rust:
385 case DW_LANG_Swift:
386 case DW_LANG_Julia:
387 case DW_LANG_Dylan:
388 case DW_LANG_Fortran03:
389 case DW_LANG_Fortran08:
390 case DW_LANG_RenderScript:
391 case DW_LANG_BLISS:
392 case DW_LANG_Mips_Assembler:
393 case DW_LANG_GOOGLE_RenderScript:
394 case DW_LANG_BORLAND_Delphi:
395 case DW_LANG_lo_user:
396 case DW_LANG_hi_user:
397 case DW_LANG_Kotlin:
398 case DW_LANG_Zig:
399 case DW_LANG_Crystal:
400 case DW_LANG_Fortran18:
401 case DW_LANG_Ada2005:
402 case DW_LANG_Ada2012:
403 case DW_LANG_Mojo:
404 return false;
405 }
406 llvm_unreachable("Unknown language kind.");
407}
408
410 return isFortran(S) ? DW_ATE_signed : DW_ATE_unsigned;
411}
412
414 // Identifier case codes
420
422// Calling convention codes
423#define HANDLE_DW_CC(ID, NAME) DW_CC_##NAME = ID,
424#include "llvm/BinaryFormat/Dwarf.def"
426 DW_CC_hi_user = 0xff
428
430 // Inline codes
436
438 // Array ordering
440 DW_ORD_col_major = 0x01
442
444 // Discriminant descriptor values
446 DW_DSC_range = 0x01
448
449/// Line Number Standard Opcode Encodings.
450enum LineNumberOps : uint8_t {
451#define HANDLE_DW_LNS(ID, NAME) DW_LNS_##NAME = ID,
452#include "llvm/BinaryFormat/Dwarf.def"
453};
454
455/// Line Number Extended Opcode Encodings.
457#define HANDLE_DW_LNE(ID, NAME) DW_LNE_##NAME = ID,
458#include "llvm/BinaryFormat/Dwarf.def"
460 DW_LNE_hi_user = 0xff
462
464#define HANDLE_DW_LNCT(ID, NAME) DW_LNCT_##NAME = ID,
465#include "llvm/BinaryFormat/Dwarf.def"
468};
469
471 // Macinfo Type Encodings
478
479/// DWARF v5 macro information entry type encodings.
481#define HANDLE_DW_MACRO(ID, NAME) DW_MACRO_##NAME = ID,
482#include "llvm/BinaryFormat/Dwarf.def"
484 DW_MACRO_hi_user = 0xff
486
487/// GNU .debug_macro macro information entry type encodings.
489#define HANDLE_DW_MACRO_GNU(ID, NAME) DW_MACRO_GNU_##NAME = ID,
490#include "llvm/BinaryFormat/Dwarf.def"
494
495/// DWARF v5 range list entry encoding values.
497#define HANDLE_DW_RLE(ID, NAME) DW_RLE_##NAME = ID,
498#include "llvm/BinaryFormat/Dwarf.def"
499};
500
501/// DWARF v5 loc list entry encoding values.
503#define HANDLE_DW_LLE(ID, NAME) DW_LLE_##NAME = ID,
504#include "llvm/BinaryFormat/Dwarf.def"
505};
506
507/// Call frame instruction encodings.
509#define HANDLE_DW_CFA(ID, NAME) DW_CFA_##NAME = ID,
510#define HANDLE_DW_CFA_PRED(ID, NAME, ARCH) DW_CFA_##NAME = ID,
511#include "llvm/BinaryFormat/Dwarf.def"
513
515 DW_CFA_hi_user = 0x3f
517
519 // Children flag
522
539 DW_EH_PE_indirect = 0x80
541
542/// Constants for the DW_APPLE_PROPERTY_attributes attribute.
543/// Keep this list in sync with clang's DeclObjCCommon.h
544/// ObjCPropertyAttribute::Kind!
546#define HANDLE_DW_APPLE_PROPERTY(ID, NAME) DW_APPLE_PROPERTY_##NAME = ID,
547#include "llvm/BinaryFormat/Dwarf.def"
548};
549
550/// Constants for unit types in DWARF v5.
551enum UnitType : unsigned char {
552#define HANDLE_DW_UT(ID, NAME) DW_UT_##NAME = ID,
553#include "llvm/BinaryFormat/Dwarf.def"
555 DW_UT_hi_user = 0xff
557
558enum Index {
559#define HANDLE_DW_IDX(ID, NAME) DW_IDX_##NAME = ID,
560#include "llvm/BinaryFormat/Dwarf.def"
562 DW_IDX_hi_user = 0x3fff
564
565inline bool isUnitType(uint8_t UnitType) {
566 switch (UnitType) {
567 case DW_UT_compile:
568 case DW_UT_type:
569 case DW_UT_partial:
570 case DW_UT_skeleton:
571 case DW_UT_split_compile:
572 case DW_UT_split_type:
573 return true;
574 default:
575 return false;
576 }
577}
578
579inline bool isUnitType(dwarf::Tag T) {
580 switch (T) {
581 case DW_TAG_compile_unit:
582 case DW_TAG_type_unit:
583 case DW_TAG_partial_unit:
584 case DW_TAG_skeleton_unit:
585 return true;
586 default:
587 return false;
588 }
589}
590
591// Constants for the DWARF v5 Accelerator Table Proposal
593 // Data layout descriptors.
594 DW_ATOM_null = 0u, /// Marker as the end of a list of atoms.
595 DW_ATOM_die_offset = 1u, // DIE offset in the debug_info section.
596 DW_ATOM_cu_offset = 2u, // Offset of the compile unit header that contains the
597 // item in question.
598 DW_ATOM_die_tag = 3u, // A tag entry.
599 DW_ATOM_type_flags = 4u, // Set of flags for a type.
600
601 DW_ATOM_type_type_flags = 5u, // Dsymutil type extension.
602 DW_ATOM_qual_name_hash = 6u, // Dsymutil qualified hash extension.
603
604 // DW_ATOM_type_flags values.
605
606 // Always set for C++, only set for ObjC if this is the @implementation for a
607 // class.
609
610 // Hash functions.
611
612 // Daniel J. Bernstein hash.
615
616// Uniquify the string hashes and calculate the bucket count for the
617// DWARF v5 Accelerator Table. NOTE: This function effectively consumes the
618// 'Hashes' input parameter.
619inline std::pair<uint32_t, uint32_t>
621 uint32_t BucketCount = 0;
622
623 sort(Hashes);
624 uint32_t UniqueHashCount = llvm::unique(Hashes) - Hashes.begin();
625 if (UniqueHashCount > 1024)
626 BucketCount = UniqueHashCount / 4;
627 else if (UniqueHashCount > 16)
628 BucketCount = UniqueHashCount / 2;
629 else
630 BucketCount = std::max<uint32_t>(UniqueHashCount, 1);
631
632 return {BucketCount, UniqueHashCount};
633}
634
635// Constants for the GNU pubnames/pubtypes extensions supporting gdb index.
646
648
649/// \defgroup DwarfConstantsDumping Dwarf constants dumping functions
650///
651/// All these functions map their argument's value back to the
652/// corresponding enumerator name or return an empty StringRef if the value
653/// isn't known.
654///
655/// @{
656StringRef TagString(unsigned Tag);
657StringRef ChildrenString(unsigned Children);
659StringRef FormEncodingString(unsigned Encoding);
660StringRef OperationEncodingString(unsigned Encoding);
661StringRef SubOperationEncodingString(unsigned OpEncoding,
662 unsigned SubOpEncoding);
663StringRef AttributeEncodingString(unsigned Encoding);
664StringRef DecimalSignString(unsigned Sign);
666StringRef AccessibilityString(unsigned Access);
667StringRef DefaultedMemberString(unsigned DefaultedEncodings);
668StringRef VisibilityString(unsigned Visibility);
669StringRef VirtualityString(unsigned Virtuality);
670StringRef LanguageString(unsigned Language);
671StringRef CaseString(unsigned Case);
672StringRef ConventionString(unsigned Convention);
673StringRef InlineCodeString(unsigned Code);
674StringRef ArrayOrderString(unsigned Order);
675StringRef LNStandardString(unsigned Standard);
676StringRef LNExtendedString(unsigned Encoding);
677StringRef MacinfoString(unsigned Encoding);
678StringRef MacroString(unsigned Encoding);
679StringRef GnuMacroString(unsigned Encoding);
680StringRef RangeListEncodingString(unsigned Encoding);
681StringRef LocListEncodingString(unsigned Encoding);
682StringRef CallFrameString(unsigned Encoding, Triple::ArchType Arch);
684StringRef UnitTypeString(unsigned);
685StringRef AtomTypeString(unsigned Atom);
688StringRef IndexString(unsigned Idx);
690StringRef FormatString(bool IsDWARF64);
691StringRef RLEString(unsigned RLE);
692/// @}
693
694/// \defgroup DwarfConstantsParsing Dwarf constants parsing functions
695///
696/// These functions map their strings back to the corresponding enumeration
697/// value or return 0 if there is none, except for these exceptions:
698///
699/// \li \a getTag() returns \a DW_TAG_invalid on invalid input.
700/// \li \a getVirtuality() returns \a DW_VIRTUALITY_invalid on invalid input.
701/// \li \a getMacinfo() returns \a DW_MACINFO_invalid on invalid input.
702///
703/// @{
704unsigned getTag(StringRef TagString);
706unsigned getSubOperationEncoding(unsigned OpEncoding,
711unsigned getAttributeEncoding(StringRef EncodingString);
714/// @}
715
716/// \defgroup DwarfConstantsVersioning Dwarf version for constants
717///
718/// For constants defined by DWARF, returns the DWARF version when the constant
719/// was first defined. For vendor extensions, if there is a version-related
720/// policy for when to emit it, returns a version number for that policy.
721/// Otherwise returns 0.
722///
723/// @{
724unsigned TagVersion(Tag T);
726unsigned FormVersion(Form F);
730/// @}
731
732/// \defgroup DwarfConstantsVendor Dwarf "vendor" for constants
733///
734/// These functions return an identifier describing "who" defined the constant,
735/// either the DWARF standard itself or the vendor who defined the extension.
736///
737/// @{
738unsigned TagVendor(Tag T);
739unsigned AttributeVendor(Attribute A);
740unsigned FormVendor(Form F);
741unsigned OperationVendor(LocationAtom O);
744/// @}
745
746std::optional<unsigned> LanguageLowerBound(SourceLanguage L);
747
748/// The size of a reference determined by the DWARF 32/64-bit format.
750 switch (Format) {
752 return 4;
754 return 8;
755 }
756 llvm_unreachable("Invalid Format value");
757}
758
759/// A helper struct providing information about the byte size of DW_FORM
760/// values that vary in size depending on the DWARF version, address byte
761/// size, or DWARF32/DWARF64.
764 uint8_t AddrSize;
766 /// True if DWARF v2 output generally uses relocations for references
767 /// to other .debug_* sections.
769
770 /// The definition of the size of form DW_FORM_ref_addr depends on the
771 /// version. In DWARF v2 it's the size of an address; after that, it's the
772 /// size of a reference.
773 uint8_t getRefAddrByteSize() const {
774 if (Version == 2)
775 return AddrSize;
776 return getDwarfOffsetByteSize();
777 }
778
779 /// The size of a reference is determined by the DWARF 32/64-bit format.
780 uint8_t getDwarfOffsetByteSize() const {
782 }
783
784 explicit operator bool() const { return Version && AddrSize; }
785};
786
787/// Get the byte size of the unit length field depending on the DWARF format.
789 switch (Format) {
791 return 4;
793 return 12;
794 }
795 llvm_unreachable("Invalid Format value");
796}
797
798/// Get the fixed byte size for a given form.
799///
800/// If the form has a fixed byte size, then an Optional with a value will be
801/// returned. If the form is always encoded using a variable length storage
802/// format (ULEB or SLEB numbers or blocks) then std::nullopt will be returned.
803///
804/// \param Form DWARF form to get the fixed byte size for.
805/// \param Params DWARF parameters to help interpret forms.
806/// \returns std::optional<uint8_t> value with the fixed byte size or
807/// std::nullopt if \p Form doesn't have a fixed byte size.
808std::optional<uint8_t> getFixedFormByteSize(dwarf::Form Form,
809 FormParams Params);
810
811/// Tells whether the specified form is defined in the specified version,
812/// or is an extension if extensions are allowed.
813bool isValidFormForVersion(Form F, unsigned Version, bool ExtensionsOk = true);
814
815/// Returns the symbolic string representing Val when used as a value
816/// for attribute Attr.
817StringRef AttributeValueString(uint16_t Attr, unsigned Val);
818
819/// Returns the symbolic string representing Val when used as a value
820/// for atom Atom.
821StringRef AtomValueString(uint16_t Atom, unsigned Val);
822
823/// Describes an entry of the various gnu_pub* debug sections.
824///
825/// The gnu_pub* kind looks like:
826///
827/// 0-3 reserved
828/// 4-6 symbol kind
829/// 7 0 == global, 1 == static
830///
831/// A gdb_index descriptor includes the above kind, shifted 24 bits up with the
832/// offset of the cu within the debug_info section stored in those 24 bits.
837 : Kind(Kind), Linkage(Linkage) {}
841 : Kind(
842 static_cast<GDBIndexEntryKind>((Value & KIND_MASK) >> KIND_OFFSET)),
843 Linkage(static_cast<GDBIndexEntryLinkage>((Value & LINKAGE_MASK) >>
844 LINKAGE_OFFSET)) {}
845 uint8_t toBits() const {
846 return Kind << KIND_OFFSET | Linkage << LINKAGE_OFFSET;
847 }
848
849private:
850 enum {
851 KIND_OFFSET = 4,
852 KIND_MASK = 7 << KIND_OFFSET,
853 LINKAGE_OFFSET = 7,
854 LINKAGE_MASK = 1 << LINKAGE_OFFSET
855 };
856};
857
858template <typename Enum> struct EnumTraits : public std::false_type {};
859
860template <> struct EnumTraits<Attribute> : public std::true_type {
861 static constexpr char Type[3] = "AT";
862 static constexpr StringRef (*StringFn)(unsigned) = &AttributeString;
863};
864
865template <> struct EnumTraits<Form> : public std::true_type {
866 static constexpr char Type[5] = "FORM";
867 static constexpr StringRef (*StringFn)(unsigned) = &FormEncodingString;
868};
869
870template <> struct EnumTraits<Index> : public std::true_type {
871 static constexpr char Type[4] = "IDX";
872 static constexpr StringRef (*StringFn)(unsigned) = &IndexString;
873};
874
875template <> struct EnumTraits<Tag> : public std::true_type {
876 static constexpr char Type[4] = "TAG";
877 static constexpr StringRef (*StringFn)(unsigned) = &TagString;
878};
879
880template <> struct EnumTraits<LineNumberOps> : public std::true_type {
881 static constexpr char Type[4] = "LNS";
882 static constexpr StringRef (*StringFn)(unsigned) = &LNStandardString;
883};
884
885template <> struct EnumTraits<LocationAtom> : public std::true_type {
886 static constexpr char Type[3] = "OP";
887 static constexpr StringRef (*StringFn)(unsigned) = &OperationEncodingString;
888};
889
890inline uint64_t computeTombstoneAddress(uint8_t AddressByteSize) {
891 return std::numeric_limits<uint64_t>::max() >> (8 - AddressByteSize) * 8;
892}
893
894} // End of namespace dwarf
895
896/// Dwarf constants format_provider
897///
898/// Specialization of the format_provider template for dwarf enums. Unlike the
899/// dumping functions above, these format unknown enumerator values as
900/// DW_TYPE_unknown_1234 (e.g. DW_TAG_unknown_ffff).
901template <typename Enum>
902struct format_provider<Enum, std::enable_if_t<dwarf::EnumTraits<Enum>::value>> {
903 static void format(const Enum &E, raw_ostream &OS, StringRef Style) {
905 if (Str.empty()) {
906 OS << "DW_" << dwarf::EnumTraits<Enum>::Type << "_unknown_"
907 << llvm::format("%x", E);
908 } else
909 OS << Str;
910 }
911};
912} // End of namespace llvm
913
914#endif
static GCRegistry::Add< ErlangGC > A("erlang", "erlang-compatible garbage collector")
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
Returns the sub type a function will return at a given Idx Should correspond to the result type of an ExtractValue instruction executed with just that one unsigned Idx
#define F(x, y, z)
Definition: MD5.cpp:55
endianness Endian
raw_pwrite_stream & OS
MutableArrayRef - Represent a mutable reference to an array (0 or more elements consecutively in memo...
Definition: ArrayRef.h:307
iterator begin() const
Definition: ArrayRef.h:356
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
The instances of the Type class are immutable: once they are created, they are never changed.
Definition: Type.h:45
LLVM Value Representation.
Definition: Value.h:74
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
StringRef LNExtendedString(unsigned Encoding)
Definition: Dwarf.cpp:481
StringRef RangeListEncodingString(unsigned Encoding)
Definition: Dwarf.cpp:549
StringRef CaseString(unsigned Case)
Definition: Dwarf.cpp:414
StringRef VisibilityString(unsigned Visibility)
Definition: Dwarf.cpp:330
StringRef GDBIndexEntryLinkageString(GDBIndexEntryLinkage Linkage)
Definition: Dwarf.cpp:664
StringRef AttributeString(unsigned Attribute)
Definition: Dwarf.cpp:72
StringRef CallFrameString(unsigned Encoding, Triple::ArchType Arch)
Definition: Dwarf.cpp:571
StringRef FormEncodingString(unsigned Encoding)
Definition: Dwarf.cpp:105
StringRef ArrayOrderString(unsigned Order)
Definition: Dwarf.cpp:460
StringRef MacroString(unsigned Encoding)
Definition: Dwarf.cpp:521
StringRef LocListEncodingString(unsigned Encoding)
Definition: Dwarf.cpp:560
StringRef IndexString(unsigned Idx)
Definition: Dwarf.cpp:718
StringRef RLEString(unsigned RLE)
Definition: Dwarf.cpp:840
StringRef SubOperationEncodingString(unsigned OpEncoding, unsigned SubOpEncoding)
Definition: Dwarf.cpp:196
StringRef LanguageString(unsigned Language)
Definition: Dwarf.cpp:361
StringRef DecimalSignString(unsigned Sign)
Definition: Dwarf.cpp:272
StringRef VirtualityString(unsigned Virtuality)
Definition: Dwarf.cpp:342
StringRef AttributeEncodingString(unsigned Encoding)
Definition: Dwarf.cpp:231
StringRef ChildrenString(unsigned Children)
Definition: Dwarf.cpp:62
StringRef ApplePropertyString(unsigned)
Definition: Dwarf.cpp:600
StringRef AtomTypeString(unsigned Atom)
Definition: Dwarf.cpp:622
StringRef FormatString(DwarfFormat Format)
Definition: Dwarf.cpp:826
StringRef GnuMacroString(unsigned Encoding)
Definition: Dwarf.cpp:532
StringRef EndianityString(unsigned Endian)
Definition: Dwarf.cpp:288
StringRef ConventionString(unsigned Convention)
Definition: Dwarf.cpp:428
StringRef MacinfoString(unsigned Encoding)
Definition: Dwarf.cpp:492
StringRef OperationEncodingString(unsigned Encoding)
Definition: Dwarf.cpp:138
StringRef UnitTypeString(unsigned)
Definition: Dwarf.cpp:611
StringRef InlineCodeString(unsigned Code)
Definition: Dwarf.cpp:446
StringRef GDBIndexEntryKindString(GDBIndexEntryKind Kind)
Definition: Dwarf.cpp:641
StringRef TagString(unsigned Tag)
Definition: Dwarf.cpp:21
StringRef LNStandardString(unsigned Standard)
Definition: Dwarf.cpp:470
StringRef AccessibilityString(unsigned Access)
Definition: Dwarf.cpp:304
StringRef DefaultedMemberString(unsigned DefaultedEncodings)
Definition: Dwarf.cpp:317
unsigned getSubOperationEncoding(unsigned OpEncoding, StringRef SubOperationEncodingString)
Definition: Dwarf.cpp:203
unsigned getOperationEncoding(StringRef OperationEncodingString)
Definition: Dwarf.cpp:161
unsigned getAttributeEncoding(StringRef EncodingString)
Definition: Dwarf.cpp:242
unsigned getTag(StringRef TagString)
Definition: Dwarf.cpp:32
unsigned getCallingConvention(StringRef LanguageString)
Definition: Dwarf.cpp:439
unsigned getLanguage(StringRef LanguageString)
Definition: Dwarf.cpp:372
unsigned getVirtuality(StringRef VirtualityString)
Definition: Dwarf.cpp:353
unsigned getMacro(StringRef MacroString)
Definition: Dwarf.cpp:543
unsigned getMacinfo(StringRef MacinfoString)
Definition: Dwarf.cpp:511
unsigned AttributeEncodingVendor(TypeKind E)
Definition: Dwarf.cpp:261
unsigned FormVendor(Form F)
Definition: Dwarf.cpp:127
unsigned AttributeVendor(Attribute A)
Definition: Dwarf.cpp:94
unsigned OperationVendor(LocationAtom O)
Definition: Dwarf.cpp:220
unsigned TagVendor(Tag T)
Definition: Dwarf.cpp:51
unsigned LanguageVendor(SourceLanguage L)
Definition: Dwarf.cpp:391
unsigned OperationVersion(LocationAtom O)
Definition: Dwarf.cpp:209
unsigned AttributeVersion(Attribute A)
Definition: Dwarf.cpp:83
unsigned LanguageVersion(SourceLanguage L)
Definition: Dwarf.cpp:380
unsigned AttributeEncodingVersion(TypeKind E)
Definition: Dwarf.cpp:250
unsigned TagVersion(Tag T)
Definition: Dwarf.cpp:40
unsigned FormVersion(Form F)
Definition: Dwarf.cpp:116
#define UINT64_MAX
Definition: DataTypes.h:77
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
InlineAttribute
Definition: Dwarf.h:429
@ DW_INL_not_inlined
Definition: Dwarf.h:431
@ DW_INL_declared_not_inlined
Definition: Dwarf.h:433
@ DW_INL_inlined
Definition: Dwarf.h:432
@ DW_INL_declared_inlined
Definition: Dwarf.h:434
const uint32_t DW_CIE_ID
Special ID values that distinguish a CIE from a FDE in DWARF CFI.
Definition: Dwarf.h:96
uint8_t getUnitLengthFieldByteSize(DwarfFormat Format)
Get the byte size of the unit length field depending on the DWARF format.
Definition: Dwarf.h:788
AccessAttribute
Definition: Dwarf.h:178
@ DW_ACCESS_private
Definition: Dwarf.h:182
@ DW_ACCESS_protected
Definition: Dwarf.h:181
@ DW_ACCESS_public
Definition: Dwarf.h:180
MacroEntryType
DWARF v5 macro information entry type encodings.
Definition: Dwarf.h:480
@ DW_MACRO_lo_user
Definition: Dwarf.h:483
@ DW_MACRO_hi_user
Definition: Dwarf.h:484
Attribute
Attributes.
Definition: Dwarf.h:123
@ DW_AT_hi_user
Definition: Dwarf.h:127
@ DW_AT_lo_user
Definition: Dwarf.h:126
std::optional< unsigned > LanguageLowerBound(SourceLanguage L)
Definition: Dwarf.cpp:403
LineNumberEntryFormat
Definition: Dwarf.h:463
@ DW_LNCT_lo_user
Definition: Dwarf.h:466
@ DW_LNCT_hi_user
Definition: Dwarf.h:467
StringRef AtomValueString(uint16_t Atom, unsigned Val)
Returns the symbolic string representing Val when used as a value for atom Atom.
Definition: Dwarf.cpp:707
DefaultedMemberAttribute
Definition: Dwarf.h:198
@ DW_DEFAULTED_max
Definition: Dwarf.h:201
const uint64_t DW64_CIE_ID
Definition: Dwarf.h:97
VisibilityAttribute
Definition: Dwarf.h:185
@ DW_VIS_local
Definition: Dwarf.h:187
@ DW_VIS_exported
Definition: Dwarf.h:188
@ DW_VIS_qualified
Definition: Dwarf.h:189
LlvmUserLocationAtom
Definition: Dwarf.h:149
ArrayDimensionOrdering
Definition: Dwarf.h:437
@ DW_ORD_row_major
Definition: Dwarf.h:439
@ DW_ORD_col_major
Definition: Dwarf.h:440
CallingConvention
Definition: Dwarf.h:421
@ DW_CC_lo_user
Definition: Dwarf.h:425
@ DW_CC_hi_user
Definition: Dwarf.h:426
LineNumberOps
Line Number Standard Opcode Encodings.
Definition: Dwarf.h:450
@ DW_ATE_hi_user
Definition: Dwarf.h:158
@ DW_ATE_lo_user
Definition: Dwarf.h:157
ApplePropertyAttributes
Constants for the DW_APPLE_PROPERTY_attributes attribute.
Definition: Dwarf.h:545
LoclistEntries
DWARF v5 loc list entry encoding values.
Definition: Dwarf.h:502
bool isFortran(SourceLanguage S)
Definition: Dwarf.h:279
bool isUnitType(uint8_t UnitType)
Definition: Dwarf.h:565
@ DW_IDX_lo_user
Definition: Dwarf.h:561
@ DW_IDX_hi_user
Definition: Dwarf.h:562
std::pair< uint32_t, uint32_t > getDebugNamesBucketAndHashCount(MutableArrayRef< uint32_t > Hashes)
Definition: Dwarf.h:620
GnuMacroEntryType
GNU .debug_macro macro information entry type encodings.
Definition: Dwarf.h:488
@ DW_MACRO_GNU_lo_user
Definition: Dwarf.h:491
@ DW_MACRO_GNU_hi_user
Definition: Dwarf.h:492
UnitType
Constants for unit types in DWARF v5.
Definition: Dwarf.h:551
@ DW_UT_lo_user
Definition: Dwarf.h:554
@ DW_UT_hi_user
Definition: Dwarf.h:555
@ DW_FORM_lo_user
Not specified by DWARF.
Definition: Dwarf.h:133
EndianityEncoding
Definition: Dwarf.h:170
@ DW_END_lo_user
Definition: Dwarf.h:174
@ DW_END_hi_user
Definition: Dwarf.h:175
bool isType(Tag T)
Definition: Dwarf.h:111
LocationAtom
Definition: Dwarf.h:136
@ DW_OP_LLVM_entry_value
Only used in LLVM metadata.
Definition: Dwarf.h:144
@ DW_OP_LLVM_implicit_pointer
Only used in LLVM metadata.
Definition: Dwarf.h:145
@ DW_OP_lo_user
Definition: Dwarf.h:139
@ DW_OP_hi_user
Definition: Dwarf.h:140
@ DW_OP_LLVM_tag_offset
Only used in LLVM metadata.
Definition: Dwarf.h:143
@ DW_OP_LLVM_fragment
Only used in LLVM metadata.
Definition: Dwarf.h:141
@ DW_OP_LLVM_arg
Only used in LLVM metadata.
Definition: Dwarf.h:146
@ DW_OP_LLVM_convert
Only used in LLVM metadata.
Definition: Dwarf.h:142
SourceLanguage
Definition: Dwarf.h:204
@ DW_LANG_lo_user
Definition: Dwarf.h:208
@ DW_LANG_hi_user
Definition: Dwarf.h:209
CaseSensitivity
Definition: Dwarf.h:413
@ DW_ID_down_case
Definition: Dwarf.h:417
@ DW_ID_case_insensitive
Definition: Dwarf.h:418
@ DW_ID_case_sensitive
Definition: Dwarf.h:415
@ DW_ID_up_case
Definition: Dwarf.h:416
DwarfFormat
Constants that define the DWARF format as 32 or 64 bit.
Definition: Dwarf.h:91
@ DWARF64
Definition: Dwarf.h:91
@ DWARF32
Definition: Dwarf.h:91
bool isValidFormForVersion(Form F, unsigned Version, bool ExtensionsOk=true)
Tells whether the specified form is defined in the specified version, or is an extension if extension...
Definition: Dwarf.cpp:817
MacinfoRecordType
Definition: Dwarf.h:470
@ DW_MACINFO_undef
Definition: Dwarf.h:473
@ DW_MACINFO_start_file
Definition: Dwarf.h:474
@ DW_MACINFO_end_file
Definition: Dwarf.h:475
@ DW_MACINFO_define
Definition: Dwarf.h:472
@ DW_MACINFO_vendor_ext
Definition: Dwarf.h:476
const uint32_t DW_INVALID_OFFSET
Identifier of an invalid DIE offset in the .debug_info section.
Definition: Dwarf.h:101
RnglistEntries
DWARF v5 range list entry encoding values.
Definition: Dwarf.h:496
std::optional< uint8_t > getFixedFormByteSize(dwarf::Form Form, FormParams Params)
Get the fixed byte size for a given form.
Definition: Dwarf.cpp:729
uint8_t getDwarfOffsetByteSize(DwarfFormat Format)
The size of a reference determined by the DWARF 32/64-bit format.
Definition: Dwarf.h:749
VirtualityAttribute
Definition: Dwarf.h:192
@ DW_VIRTUALITY_max
Definition: Dwarf.h:195
GDBIndexEntryKind
Definition: Dwarf.h:636
@ GIEK_NONE
Definition: Dwarf.h:637
@ GIEK_UNUSED7
Definition: Dwarf.h:644
@ GIEK_TYPE
Definition: Dwarf.h:638
@ GIEK_UNUSED6
Definition: Dwarf.h:643
@ GIEK_OTHER
Definition: Dwarf.h:641
@ GIEK_FUNCTION
Definition: Dwarf.h:640
@ GIEK_UNUSED5
Definition: Dwarf.h:642
@ GIEK_VARIABLE
Definition: Dwarf.h:639
LineNumberExtendedOps
Line Number Extended Opcode Encodings.
Definition: Dwarf.h:456
@ DW_LNE_hi_user
Definition: Dwarf.h:460
@ DW_LNE_lo_user
Definition: Dwarf.h:459
bool isCPlusPlus(SourceLanguage S)
Definition: Dwarf.h:212
@ DW_EH_PE_textrel
Definition: Dwarf.h:535
@ DW_CHILDREN_no
Definition: Dwarf.h:520
@ DW_EH_PE_datarel
Definition: Dwarf.h:536
@ DW_EH_PE_pcrel
Definition: Dwarf.h:534
@ DW_EH_PE_signed
Definition: Dwarf.h:533
@ DW_CHILDREN_yes
Definition: Dwarf.h:521
@ DW_EH_PE_sdata4
Definition: Dwarf.h:531
@ DW_EH_PE_funcrel
Definition: Dwarf.h:537
@ DW_EH_PE_aligned
Definition: Dwarf.h:538
@ DW_EH_PE_udata2
Definition: Dwarf.h:526
@ DW_EH_PE_sdata8
Definition: Dwarf.h:532
@ DW_EH_PE_absptr
Definition: Dwarf.h:523
@ DW_EH_PE_sdata2
Definition: Dwarf.h:530
@ DW_EH_PE_udata4
Definition: Dwarf.h:527
@ DW_EH_PE_udata8
Definition: Dwarf.h:528
@ DW_EH_PE_uleb128
Definition: Dwarf.h:525
@ DW_EH_PE_indirect
Definition: Dwarf.h:539
@ DW_EH_PE_sleb128
Definition: Dwarf.h:529
@ DW_EH_PE_omit
Definition: Dwarf.h:524
TypeKind getArrayIndexTypeEncoding(SourceLanguage S)
Definition: Dwarf.h:409
StringRef AttributeValueString(uint16_t Attr, unsigned Val)
Returns the symbolic string representing Val when used as a value for attribute Attr.
Definition: Dwarf.cpp:674
DiscriminantList
Definition: Dwarf.h:443
@ DW_DSC_range
Definition: Dwarf.h:446
@ DW_DSC_label
Definition: Dwarf.h:445
@ DW_TAG_user_base
Recommended base for user tags.
Definition: Dwarf.h:108
@ DW_TAG_hi_user
Definition: Dwarf.h:107
@ DW_TAG_lo_user
Definition: Dwarf.h:106
CallFrameInfo
Call frame instruction encodings.
Definition: Dwarf.h:508
@ DW_CFA_hi_user
Definition: Dwarf.h:515
@ DW_CFA_extended
Definition: Dwarf.h:512
@ DW_CFA_lo_user
Definition: Dwarf.h:514
DecimalSignEncoding
Definition: Dwarf.h:161
@ DW_DS_leading_separate
Definition: Dwarf.h:166
@ DW_DS_trailing_separate
Definition: Dwarf.h:167
@ DW_DS_trailing_overpunch
Definition: Dwarf.h:165
@ DW_DS_leading_overpunch
Definition: Dwarf.h:164
@ DW_DS_unsigned
Definition: Dwarf.h:163
uint64_t computeTombstoneAddress(uint8_t AddressByteSize)
Definition: Dwarf.h:890
AcceleratorTable
Definition: Dwarf.h:592
@ DW_ATOM_type_flags
Definition: Dwarf.h:599
@ DW_ATOM_null
Definition: Dwarf.h:594
@ DW_ATOM_die_tag
Definition: Dwarf.h:598
@ DW_FLAG_type_implementation
Definition: Dwarf.h:608
@ DW_ATOM_qual_name_hash
Definition: Dwarf.h:602
@ DW_ATOM_die_offset
Marker as the end of a list of atoms.
Definition: Dwarf.h:595
@ DW_ATOM_type_type_flags
Definition: Dwarf.h:601
@ DW_ATOM_cu_offset
Definition: Dwarf.h:596
@ DW_hash_function_djb
Definition: Dwarf.h:613
bool isC(SourceLanguage S)
Definition: Dwarf.h:346
LLVMConstants
Definition: Dwarf.h:44
@ DWARF_VENDOR_COMPAQ
Definition: Dwarf.h:78
@ DWARF_VENDOR_LLVM
Definition: Dwarf.h:74
@ DWARF_VENDOR_WASM
Definition: Dwarf.h:76
@ DW_ARANGES_VERSION
Section version number for .debug_aranges.
Definition: Dwarf.h:64
@ DW_PUBNAMES_VERSION
Section version number for .debug_pubnames.
Definition: Dwarf.h:63
@ DWARF_VENDOR_APPLE
Definition: Dwarf.h:70
@ DWARF_VERSION
Other constants.
Definition: Dwarf.h:61
@ DWARF_VENDOR_ALTIUM
Definition: Dwarf.h:77
@ DWARF_VENDOR_IBM
Definition: Dwarf.h:82
@ DWARF_VENDOR_GO
Definition: Dwarf.h:80
@ DWARF_VENDOR_SUN
Definition: Dwarf.h:85
@ DW_TAG_invalid
LLVM mock tags (see also llvm/BinaryFormat/Dwarf.def).
Definition: Dwarf.h:47
@ DWARF_VENDOR_PGI
Definition: Dwarf.h:84
@ DWARF_VENDOR_HP
Definition: Dwarf.h:81
@ DWARF_VENDOR_INTEL
Definition: Dwarf.h:83
@ DW_LENGTH_lo_reserved
Special values for an initial length field.
Definition: Dwarf.h:54
@ DW_MACINFO_invalid
Macinfo type for invalid results.
Definition: Dwarf.h:49
@ DWARF_VENDOR_UPC
Definition: Dwarf.h:86
@ DWARF_VENDOR_GNU
Definition: Dwarf.h:72
@ DW_VIRTUALITY_invalid
Virtuality for invalid results.
Definition: Dwarf.h:48
@ DW_LENGTH_hi_reserved
Upper bound of the reserved range.
Definition: Dwarf.h:56
@ DWARF_VENDOR_GOOGLE
Definition: Dwarf.h:73
@ DWARF_VENDOR_BORLAND
Definition: Dwarf.h:71
@ DWARF_VENDOR_GHS
Definition: Dwarf.h:79
@ DWARF_VENDOR_MIPS
Definition: Dwarf.h:75
@ DW_PUBTYPES_VERSION
Section version number for .debug_pubtypes.
Definition: Dwarf.h:62
@ DW_LENGTH_DWARF64
Indicator of 64-bit DWARF format.
Definition: Dwarf.h:55
@ DWARF_VENDOR_DWARF
Identifiers we use to distinguish vendor extensions.
Definition: Dwarf.h:69
GDBIndexEntryLinkage
Definition: Dwarf.h:647
@ GIEL_EXTERNAL
Definition: Dwarf.h:647
@ GIEL_STATIC
Definition: Dwarf.h:647
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
auto unique(Range &&R, Predicate P)
Definition: STLExtras.h:2022
void sort(IteratorTy Start, IteratorTy End)
Definition: STLExtras.h:1656
format_object< Ts... > format(const char *Fmt, const Ts &... Vals)
These are helper functions used to produce formatted output.
Definition: Format.h:125
Implement std::hash so that hash_code can be used in STL containers.
Definition: BitVector.h:858
A helper struct providing information about the byte size of DW_FORM values that vary in size dependi...
Definition: Dwarf.h:762
bool DwarfUsesRelocationsAcrossSections
True if DWARF v2 output generally uses relocations for references to other .debug_* sections.
Definition: Dwarf.h:768
DwarfFormat Format
Definition: Dwarf.h:765
uint8_t getDwarfOffsetByteSize() const
The size of a reference is determined by the DWARF 32/64-bit format.
Definition: Dwarf.h:780
uint8_t getRefAddrByteSize() const
The definition of the size of form DW_FORM_ref_addr depends on the version.
Definition: Dwarf.h:773
Describes an entry of the various gnu_pub* debug sections.
Definition: Dwarf.h:833
PubIndexEntryDescriptor(GDBIndexEntryKind Kind, GDBIndexEntryLinkage Linkage)
Definition: Dwarf.h:836
PubIndexEntryDescriptor(uint8_t Value)
Definition: Dwarf.h:840
PubIndexEntryDescriptor(GDBIndexEntryKind Kind)
Definition: Dwarf.h:838
GDBIndexEntryLinkage Linkage
Definition: Dwarf.h:835
static void format(const Enum &E, raw_ostream &OS, StringRef Style)
Definition: Dwarf.h:903