1 //===-- llvm/Support/Dwarf.h ---Dwarf Constants------------------*- C++ -*-===// 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 // \file 11 // \brief This file contains constants used for implementing Dwarf 12 // debug support. 13 // 14 // For details on the Dwarf specfication see the latest DWARF Debugging 15 // Information Format standard document on http://www.dwarfstd.org. This 16 // file often includes support for non-released standard features. 17 // 18 //===----------------------------------------------------------------------===// 19 20 #ifndef LLVM_SUPPORT_DWARF_H 21 #define LLVM_SUPPORT_DWARF_H 22 23 #include "llvm/ADT/StringRef.h" 24 #include "llvm/Support/Compiler.h" 25 #include "llvm/Support/DataTypes.h" 26 27 namespace llvm { 28 29 namespace dwarf { 30 31 //===----------------------------------------------------------------------===// 32 // Dwarf constants as gleaned from the DWARF Debugging Information Format V.4 33 // reference manual http://www.dwarfstd.org/. 34 // 35 36 // Do not mix the following two enumerations sets. DW_TAG_invalid changes the 37 // enumeration base type. 38 39 enum LLVMConstants : uint32_t { 40 // LLVM mock tags (see also llvm/Support/Dwarf.def). 41 DW_TAG_invalid = ~0U, // Tag for invalid results. 42 DW_VIRTUALITY_invalid = ~0U, // Virtuality for invalid results. 43 44 // Other constants. 45 DWARF_VERSION = 4, // Default dwarf version we output. 46 DW_PUBTYPES_VERSION = 2, // Section version number for .debug_pubtypes. 47 DW_PUBNAMES_VERSION = 2, // Section version number for .debug_pubnames. 48 DW_ARANGES_VERSION = 2 // Section version number for .debug_aranges. 49 }; 50 51 // Special ID values that distinguish a CIE from a FDE in DWARF CFI. 52 // Not inside an enum because a 64-bit value is needed. 53 const uint32_t DW_CIE_ID = UINT32_MAX; 54 const uint64_t DW64_CIE_ID = UINT64_MAX; 55 56 enum Tag : uint16_t { 57 #define HANDLE_DW_TAG(ID, NAME) DW_TAG_##NAME = ID, 58 #include "llvm/Support/Dwarf.def" 59 DW_TAG_lo_user = 0x4080, 60 DW_TAG_hi_user = 0xffff, 61 DW_TAG_user_base = 0x1000 // Recommended base for user tags. 62 }; 63 64 inline bool isType(Tag T) { 65 switch (T) { 66 case DW_TAG_array_type: 67 case DW_TAG_class_type: 68 case DW_TAG_interface_type: 69 case DW_TAG_enumeration_type: 70 case DW_TAG_pointer_type: 71 case DW_TAG_reference_type: 72 case DW_TAG_rvalue_reference_type: 73 case DW_TAG_string_type: 74 case DW_TAG_structure_type: 75 case DW_TAG_subroutine_type: 76 case DW_TAG_union_type: 77 case DW_TAG_ptr_to_member_type: 78 case DW_TAG_set_type: 79 case DW_TAG_subrange_type: 80 case DW_TAG_base_type: 81 case DW_TAG_const_type: 82 case DW_TAG_file_type: 83 case DW_TAG_packed_type: 84 case DW_TAG_volatile_type: 85 case DW_TAG_typedef: 86 return true; 87 default: 88 return false; 89 } 90 } 91 92 enum Attribute : uint16_t { 93 // Attributes 94 DW_AT_sibling = 0x01, 95 DW_AT_location = 0x02, 96 DW_AT_name = 0x03, 97 DW_AT_ordering = 0x09, 98 DW_AT_byte_size = 0x0b, 99 DW_AT_bit_offset = 0x0c, 100 DW_AT_bit_size = 0x0d, 101 DW_AT_stmt_list = 0x10, 102 DW_AT_low_pc = 0x11, 103 DW_AT_high_pc = 0x12, 104 DW_AT_language = 0x13, 105 DW_AT_discr = 0x15, 106 DW_AT_discr_value = 0x16, 107 DW_AT_visibility = 0x17, 108 DW_AT_import = 0x18, 109 DW_AT_string_length = 0x19, 110 DW_AT_common_reference = 0x1a, 111 DW_AT_comp_dir = 0x1b, 112 DW_AT_const_value = 0x1c, 113 DW_AT_containing_type = 0x1d, 114 DW_AT_default_value = 0x1e, 115 DW_AT_inline = 0x20, 116 DW_AT_is_optional = 0x21, 117 DW_AT_lower_bound = 0x22, 118 DW_AT_producer = 0x25, 119 DW_AT_prototyped = 0x27, 120 DW_AT_return_addr = 0x2a, 121 DW_AT_start_scope = 0x2c, 122 DW_AT_bit_stride = 0x2e, 123 DW_AT_upper_bound = 0x2f, 124 DW_AT_abstract_origin = 0x31, 125 DW_AT_accessibility = 0x32, 126 DW_AT_address_class = 0x33, 127 DW_AT_artificial = 0x34, 128 DW_AT_base_types = 0x35, 129 DW_AT_calling_convention = 0x36, 130 DW_AT_count = 0x37, 131 DW_AT_data_member_location = 0x38, 132 DW_AT_decl_column = 0x39, 133 DW_AT_decl_file = 0x3a, 134 DW_AT_decl_line = 0x3b, 135 DW_AT_declaration = 0x3c, 136 DW_AT_discr_list = 0x3d, 137 DW_AT_encoding = 0x3e, 138 DW_AT_external = 0x3f, 139 DW_AT_frame_base = 0x40, 140 DW_AT_friend = 0x41, 141 DW_AT_identifier_case = 0x42, 142 DW_AT_macro_info = 0x43, 143 DW_AT_namelist_item = 0x44, 144 DW_AT_priority = 0x45, 145 DW_AT_segment = 0x46, 146 DW_AT_specification = 0x47, 147 DW_AT_static_link = 0x48, 148 DW_AT_type = 0x49, 149 DW_AT_use_location = 0x4a, 150 DW_AT_variable_parameter = 0x4b, 151 DW_AT_virtuality = 0x4c, 152 DW_AT_vtable_elem_location = 0x4d, 153 DW_AT_allocated = 0x4e, 154 DW_AT_associated = 0x4f, 155 DW_AT_data_location = 0x50, 156 DW_AT_byte_stride = 0x51, 157 DW_AT_entry_pc = 0x52, 158 DW_AT_use_UTF8 = 0x53, 159 DW_AT_extension = 0x54, 160 DW_AT_ranges = 0x55, 161 DW_AT_trampoline = 0x56, 162 DW_AT_call_column = 0x57, 163 DW_AT_call_file = 0x58, 164 DW_AT_call_line = 0x59, 165 DW_AT_description = 0x5a, 166 DW_AT_binary_scale = 0x5b, 167 DW_AT_decimal_scale = 0x5c, 168 DW_AT_small = 0x5d, 169 DW_AT_decimal_sign = 0x5e, 170 DW_AT_digit_count = 0x5f, 171 DW_AT_picture_string = 0x60, 172 DW_AT_mutable = 0x61, 173 DW_AT_threads_scaled = 0x62, 174 DW_AT_explicit = 0x63, 175 DW_AT_object_pointer = 0x64, 176 DW_AT_endianity = 0x65, 177 DW_AT_elemental = 0x66, 178 DW_AT_pure = 0x67, 179 DW_AT_recursive = 0x68, 180 DW_AT_signature = 0x69, 181 DW_AT_main_subprogram = 0x6a, 182 DW_AT_data_bit_offset = 0x6b, 183 DW_AT_const_expr = 0x6c, 184 DW_AT_enum_class = 0x6d, 185 DW_AT_linkage_name = 0x6e, 186 187 // New in DWARF 5: 188 DW_AT_string_length_bit_size = 0x6f, 189 DW_AT_string_length_byte_size = 0x70, 190 DW_AT_rank = 0x71, 191 DW_AT_str_offsets_base = 0x72, 192 DW_AT_addr_base = 0x73, 193 DW_AT_ranges_base = 0x74, 194 DW_AT_dwo_id = 0x75, 195 DW_AT_dwo_name = 0x76, 196 DW_AT_reference = 0x77, 197 DW_AT_rvalue_reference = 0x78, 198 199 DW_AT_lo_user = 0x2000, 200 DW_AT_hi_user = 0x3fff, 201 202 DW_AT_MIPS_loop_begin = 0x2002, 203 DW_AT_MIPS_tail_loop_begin = 0x2003, 204 DW_AT_MIPS_epilog_begin = 0x2004, 205 DW_AT_MIPS_loop_unroll_factor = 0x2005, 206 DW_AT_MIPS_software_pipeline_depth = 0x2006, 207 DW_AT_MIPS_linkage_name = 0x2007, 208 DW_AT_MIPS_stride = 0x2008, 209 DW_AT_MIPS_abstract_name = 0x2009, 210 DW_AT_MIPS_clone_origin = 0x200a, 211 DW_AT_MIPS_has_inlines = 0x200b, 212 DW_AT_MIPS_stride_byte = 0x200c, 213 DW_AT_MIPS_stride_elem = 0x200d, 214 DW_AT_MIPS_ptr_dopetype = 0x200e, 215 DW_AT_MIPS_allocatable_dopetype = 0x200f, 216 DW_AT_MIPS_assumed_shape_dopetype = 0x2010, 217 218 // This one appears to have only been implemented by Open64 for 219 // fortran and may conflict with other extensions. 220 DW_AT_MIPS_assumed_size = 0x2011, 221 222 // GNU extensions 223 DW_AT_sf_names = 0x2101, 224 DW_AT_src_info = 0x2102, 225 DW_AT_mac_info = 0x2103, 226 DW_AT_src_coords = 0x2104, 227 DW_AT_body_begin = 0x2105, 228 DW_AT_body_end = 0x2106, 229 DW_AT_GNU_vector = 0x2107, 230 DW_AT_GNU_template_name = 0x2110, 231 232 DW_AT_GNU_odr_signature = 0x210f, 233 234 // Extensions for Fission proposal. 235 DW_AT_GNU_dwo_name = 0x2130, 236 DW_AT_GNU_dwo_id = 0x2131, 237 DW_AT_GNU_ranges_base = 0x2132, 238 DW_AT_GNU_addr_base = 0x2133, 239 DW_AT_GNU_pubnames = 0x2134, 240 DW_AT_GNU_pubtypes = 0x2135, 241 242 // Apple extensions. 243 DW_AT_APPLE_optimized = 0x3fe1, 244 DW_AT_APPLE_flags = 0x3fe2, 245 DW_AT_APPLE_isa = 0x3fe3, 246 DW_AT_APPLE_block = 0x3fe4, 247 DW_AT_APPLE_major_runtime_vers = 0x3fe5, 248 DW_AT_APPLE_runtime_class = 0x3fe6, 249 DW_AT_APPLE_omit_frame_ptr = 0x3fe7, 250 DW_AT_APPLE_property_name = 0x3fe8, 251 DW_AT_APPLE_property_getter = 0x3fe9, 252 DW_AT_APPLE_property_setter = 0x3fea, 253 DW_AT_APPLE_property_attribute = 0x3feb, 254 DW_AT_APPLE_objc_complete_type = 0x3fec, 255 DW_AT_APPLE_property = 0x3fed 256 }; 257 258 enum Form : uint16_t { 259 // Attribute form encodings 260 DW_FORM_addr = 0x01, 261 DW_FORM_block2 = 0x03, 262 DW_FORM_block4 = 0x04, 263 DW_FORM_data2 = 0x05, 264 DW_FORM_data4 = 0x06, 265 DW_FORM_data8 = 0x07, 266 DW_FORM_string = 0x08, 267 DW_FORM_block = 0x09, 268 DW_FORM_block1 = 0x0a, 269 DW_FORM_data1 = 0x0b, 270 DW_FORM_flag = 0x0c, 271 DW_FORM_sdata = 0x0d, 272 DW_FORM_strp = 0x0e, 273 DW_FORM_udata = 0x0f, 274 DW_FORM_ref_addr = 0x10, 275 DW_FORM_ref1 = 0x11, 276 DW_FORM_ref2 = 0x12, 277 DW_FORM_ref4 = 0x13, 278 DW_FORM_ref8 = 0x14, 279 DW_FORM_ref_udata = 0x15, 280 DW_FORM_indirect = 0x16, 281 DW_FORM_sec_offset = 0x17, 282 DW_FORM_exprloc = 0x18, 283 DW_FORM_flag_present = 0x19, 284 DW_FORM_ref_sig8 = 0x20, 285 286 // Extensions for Fission proposal 287 DW_FORM_GNU_addr_index = 0x1f01, 288 DW_FORM_GNU_str_index = 0x1f02 289 }; 290 291 enum LocationAtom { 292 #define HANDLE_DW_OP(ID, NAME) DW_OP_##NAME = ID, 293 #include "llvm/Support/Dwarf.def" 294 DW_OP_lo_user = 0xe0, 295 DW_OP_hi_user = 0xff 296 }; 297 298 enum TypeKind { 299 #define HANDLE_DW_ATE(ID, NAME) DW_ATE_##NAME = ID, 300 #include "llvm/Support/Dwarf.def" 301 DW_ATE_lo_user = 0x80, 302 DW_ATE_hi_user = 0xff 303 }; 304 305 enum DecimalSignEncoding { 306 // Decimal sign attribute values 307 DW_DS_unsigned = 0x01, 308 DW_DS_leading_overpunch = 0x02, 309 DW_DS_trailing_overpunch = 0x03, 310 DW_DS_leading_separate = 0x04, 311 DW_DS_trailing_separate = 0x05 312 }; 313 314 enum EndianityEncoding { 315 // Endianity attribute values 316 DW_END_default = 0x00, 317 DW_END_big = 0x01, 318 DW_END_little = 0x02, 319 DW_END_lo_user = 0x40, 320 DW_END_hi_user = 0xff 321 }; 322 323 enum AccessAttribute { 324 // Accessibility codes 325 DW_ACCESS_public = 0x01, 326 DW_ACCESS_protected = 0x02, 327 DW_ACCESS_private = 0x03 328 }; 329 330 enum VisibilityAttribute { 331 // Visibility codes 332 DW_VIS_local = 0x01, 333 DW_VIS_exported = 0x02, 334 DW_VIS_qualified = 0x03 335 }; 336 337 enum VirtualityAttribute { 338 #define HANDLE_DW_VIRTUALITY(ID, NAME) DW_VIRTUALITY_##NAME = ID, 339 #include "llvm/Support/Dwarf.def" 340 DW_VIRTUALITY_max = 0x02 341 }; 342 343 enum SourceLanguage { 344 #define HANDLE_DW_LANG(ID, NAME) DW_LANG_##NAME = ID, 345 #include "llvm/Support/Dwarf.def" 346 DW_LANG_lo_user = 0x8000, 347 DW_LANG_hi_user = 0xffff 348 }; 349 350 enum CaseSensitivity { 351 // Identifier case codes 352 DW_ID_case_sensitive = 0x00, 353 DW_ID_up_case = 0x01, 354 DW_ID_down_case = 0x02, 355 DW_ID_case_insensitive = 0x03 356 }; 357 358 enum CallingConvention { 359 // Calling convention codes 360 DW_CC_normal = 0x01, 361 DW_CC_program = 0x02, 362 DW_CC_nocall = 0x03, 363 DW_CC_lo_user = 0x40, 364 DW_CC_hi_user = 0xff 365 }; 366 367 enum InlineAttribute { 368 // Inline codes 369 DW_INL_not_inlined = 0x00, 370 DW_INL_inlined = 0x01, 371 DW_INL_declared_not_inlined = 0x02, 372 DW_INL_declared_inlined = 0x03 373 }; 374 375 enum ArrayDimensionOrdering { 376 // Array ordering 377 DW_ORD_row_major = 0x00, 378 DW_ORD_col_major = 0x01 379 }; 380 381 enum DiscriminantList { 382 // Discriminant descriptor values 383 DW_DSC_label = 0x00, 384 DW_DSC_range = 0x01 385 }; 386 387 enum LineNumberOps { 388 // Line Number Standard Opcode Encodings 389 DW_LNS_extended_op = 0x00, 390 DW_LNS_copy = 0x01, 391 DW_LNS_advance_pc = 0x02, 392 DW_LNS_advance_line = 0x03, 393 DW_LNS_set_file = 0x04, 394 DW_LNS_set_column = 0x05, 395 DW_LNS_negate_stmt = 0x06, 396 DW_LNS_set_basic_block = 0x07, 397 DW_LNS_const_add_pc = 0x08, 398 DW_LNS_fixed_advance_pc = 0x09, 399 DW_LNS_set_prologue_end = 0x0a, 400 DW_LNS_set_epilogue_begin = 0x0b, 401 DW_LNS_set_isa = 0x0c 402 }; 403 404 enum LineNumberExtendedOps { 405 // Line Number Extended Opcode Encodings 406 DW_LNE_end_sequence = 0x01, 407 DW_LNE_set_address = 0x02, 408 DW_LNE_define_file = 0x03, 409 DW_LNE_set_discriminator = 0x04, 410 DW_LNE_lo_user = 0x80, 411 DW_LNE_hi_user = 0xff 412 }; 413 414 enum MacinfoRecordType { 415 // Macinfo Type Encodings 416 DW_MACINFO_define = 0x01, 417 DW_MACINFO_undef = 0x02, 418 DW_MACINFO_start_file = 0x03, 419 DW_MACINFO_end_file = 0x04, 420 DW_MACINFO_vendor_ext = 0xff 421 }; 422 423 enum CallFrameInfo { 424 // Call frame instruction encodings 425 DW_CFA_extended = 0x00, 426 DW_CFA_nop = 0x00, 427 DW_CFA_advance_loc = 0x40, 428 DW_CFA_offset = 0x80, 429 DW_CFA_restore = 0xc0, 430 DW_CFA_set_loc = 0x01, 431 DW_CFA_advance_loc1 = 0x02, 432 DW_CFA_advance_loc2 = 0x03, 433 DW_CFA_advance_loc4 = 0x04, 434 DW_CFA_offset_extended = 0x05, 435 DW_CFA_restore_extended = 0x06, 436 DW_CFA_undefined = 0x07, 437 DW_CFA_same_value = 0x08, 438 DW_CFA_register = 0x09, 439 DW_CFA_remember_state = 0x0a, 440 DW_CFA_restore_state = 0x0b, 441 DW_CFA_def_cfa = 0x0c, 442 DW_CFA_def_cfa_register = 0x0d, 443 DW_CFA_def_cfa_offset = 0x0e, 444 DW_CFA_def_cfa_expression = 0x0f, 445 DW_CFA_expression = 0x10, 446 DW_CFA_offset_extended_sf = 0x11, 447 DW_CFA_def_cfa_sf = 0x12, 448 DW_CFA_def_cfa_offset_sf = 0x13, 449 DW_CFA_val_offset = 0x14, 450 DW_CFA_val_offset_sf = 0x15, 451 DW_CFA_val_expression = 0x16, 452 DW_CFA_MIPS_advance_loc8 = 0x1d, 453 DW_CFA_GNU_window_save = 0x2d, 454 DW_CFA_GNU_args_size = 0x2e, 455 DW_CFA_lo_user = 0x1c, 456 DW_CFA_hi_user = 0x3f 457 }; 458 459 enum Constants { 460 // Children flag 461 DW_CHILDREN_no = 0x00, 462 DW_CHILDREN_yes = 0x01, 463 464 DW_EH_PE_absptr = 0x00, 465 DW_EH_PE_omit = 0xff, 466 DW_EH_PE_uleb128 = 0x01, 467 DW_EH_PE_udata2 = 0x02, 468 DW_EH_PE_udata4 = 0x03, 469 DW_EH_PE_udata8 = 0x04, 470 DW_EH_PE_sleb128 = 0x09, 471 DW_EH_PE_sdata2 = 0x0A, 472 DW_EH_PE_sdata4 = 0x0B, 473 DW_EH_PE_sdata8 = 0x0C, 474 DW_EH_PE_signed = 0x08, 475 DW_EH_PE_pcrel = 0x10, 476 DW_EH_PE_textrel = 0x20, 477 DW_EH_PE_datarel = 0x30, 478 DW_EH_PE_funcrel = 0x40, 479 DW_EH_PE_aligned = 0x50, 480 DW_EH_PE_indirect = 0x80 481 }; 482 483 // Constants for debug_loc.dwo in the DWARF5 Split Debug Info Proposal 484 enum LocationListEntry : unsigned char { 485 DW_LLE_end_of_list_entry, 486 DW_LLE_base_address_selection_entry, 487 DW_LLE_start_end_entry, 488 DW_LLE_start_length_entry, 489 DW_LLE_offset_pair_entry 490 }; 491 492 /// Contstants for the DW_APPLE_PROPERTY_attributes attribute. 493 /// Keep this list in sync with clang's DeclSpec.h ObjCPropertyAttributeKind. 494 enum ApplePropertyAttributes { 495 // Apple Objective-C Property Attributes 496 DW_APPLE_PROPERTY_readonly = 0x01, 497 DW_APPLE_PROPERTY_getter = 0x02, 498 DW_APPLE_PROPERTY_assign = 0x04, 499 DW_APPLE_PROPERTY_readwrite = 0x08, 500 DW_APPLE_PROPERTY_retain = 0x10, 501 DW_APPLE_PROPERTY_copy = 0x20, 502 DW_APPLE_PROPERTY_nonatomic = 0x40, 503 DW_APPLE_PROPERTY_setter = 0x80, 504 DW_APPLE_PROPERTY_atomic = 0x100, 505 DW_APPLE_PROPERTY_weak = 0x200, 506 DW_APPLE_PROPERTY_strong = 0x400, 507 DW_APPLE_PROPERTY_unsafe_unretained = 0x800 508 }; 509 510 // Constants for the DWARF5 Accelerator Table Proposal 511 enum AcceleratorTable { 512 // Data layout descriptors. 513 DW_ATOM_null = 0u, // Marker as the end of a list of atoms. 514 DW_ATOM_die_offset = 1u, // DIE offset in the debug_info section. 515 DW_ATOM_cu_offset = 2u, // Offset of the compile unit header that contains the 516 // item in question. 517 DW_ATOM_die_tag = 3u, // A tag entry. 518 DW_ATOM_type_flags = 4u, // Set of flags for a type. 519 520 // DW_ATOM_type_flags values. 521 522 // Always set for C++, only set for ObjC if this is the @implementation for a 523 // class. 524 DW_FLAG_type_implementation = 2u, 525 526 // Hash functions. 527 528 // Daniel J. Bernstein hash. 529 DW_hash_function_djb = 0u 530 }; 531 532 // Constants for the GNU pubnames/pubtypes extensions supporting gdb index. 533 enum GDBIndexEntryKind { 534 GIEK_NONE, 535 GIEK_TYPE, 536 GIEK_VARIABLE, 537 GIEK_FUNCTION, 538 GIEK_OTHER, 539 GIEK_UNUSED5, 540 GIEK_UNUSED6, 541 GIEK_UNUSED7 542 }; 543 544 enum GDBIndexEntryLinkage { 545 GIEL_EXTERNAL, 546 GIEL_STATIC 547 }; 548 549 /// \defgroup DwarfConstantsDumping Dwarf constants dumping functions 550 /// 551 /// All these functions map their argument's value back to the 552 /// corresponding enumerator name or return nullptr if the value isn't 553 /// known. 554 /// 555 /// @{ 556 const char *TagString(unsigned Tag); 557 const char *ChildrenString(unsigned Children); 558 const char *AttributeString(unsigned Attribute); 559 const char *FormEncodingString(unsigned Encoding); 560 const char *OperationEncodingString(unsigned Encoding); 561 const char *AttributeEncodingString(unsigned Encoding); 562 const char *DecimalSignString(unsigned Sign); 563 const char *EndianityString(unsigned Endian); 564 const char *AccessibilityString(unsigned Access); 565 const char *VisibilityString(unsigned Visibility); 566 const char *VirtualityString(unsigned Virtuality); 567 const char *LanguageString(unsigned Language); 568 const char *CaseString(unsigned Case); 569 const char *ConventionString(unsigned Convention); 570 const char *InlineCodeString(unsigned Code); 571 const char *ArrayOrderString(unsigned Order); 572 const char *DiscriminantString(unsigned Discriminant); 573 const char *LNStandardString(unsigned Standard); 574 const char *LNExtendedString(unsigned Encoding); 575 const char *MacinfoString(unsigned Encoding); 576 const char *CallFrameString(unsigned Encoding); 577 const char *ApplePropertyString(unsigned); 578 const char *AtomTypeString(unsigned Atom); 579 const char *GDBIndexEntryKindString(GDBIndexEntryKind Kind); 580 const char *GDBIndexEntryLinkageString(GDBIndexEntryLinkage Linkage); 581 /// @} 582 583 /// \defgroup DwarfConstantsParsing Dwarf constants parsing functions 584 /// 585 /// These functions map their strings back to the corresponding enumeration 586 /// value or return 0 if there is none, except for these exceptions: 587 /// 588 /// \li \a getTag() returns \a DW_TAG_invalid on invalid input. 589 /// \li \a getVirtuality() returns \a DW_VIRTUALITY_invalid on invalid input. 590 /// 591 /// @{ 592 unsigned getTag(StringRef TagString); 593 unsigned getOperationEncoding(StringRef OperationEncodingString); 594 unsigned getVirtuality(StringRef VirtualityString); 595 unsigned getLanguage(StringRef LanguageString); 596 unsigned getAttributeEncoding(StringRef EncodingString); 597 /// @} 598 599 /// \brief Returns the symbolic string representing Val when used as a value 600 /// for attribute Attr. 601 const char *AttributeValueString(uint16_t Attr, unsigned Val); 602 603 /// \brief Decsribes an entry of the various gnu_pub* debug sections. 604 /// 605 /// The gnu_pub* kind looks like: 606 /// 607 /// 0-3 reserved 608 /// 4-6 symbol kind 609 /// 7 0 == global, 1 == static 610 /// 611 /// A gdb_index descriptor includes the above kind, shifted 24 bits up with the 612 /// offset of the cu within the debug_info section stored in those 24 bits. 613 struct PubIndexEntryDescriptor { 614 GDBIndexEntryKind Kind; 615 GDBIndexEntryLinkage Linkage; 616 PubIndexEntryDescriptor(GDBIndexEntryKind Kind, GDBIndexEntryLinkage Linkage) 617 : Kind(Kind), Linkage(Linkage) {} 618 /* implicit */ PubIndexEntryDescriptor(GDBIndexEntryKind Kind) 619 : Kind(Kind), Linkage(GIEL_EXTERNAL) {} 620 explicit PubIndexEntryDescriptor(uint8_t Value) 621 : Kind(static_cast<GDBIndexEntryKind>((Value & KIND_MASK) >> 622 KIND_OFFSET)), 623 Linkage(static_cast<GDBIndexEntryLinkage>((Value & LINKAGE_MASK) >> 624 LINKAGE_OFFSET)) {} 625 uint8_t toBits() { return Kind << KIND_OFFSET | Linkage << LINKAGE_OFFSET; } 626 627 private: 628 enum { 629 KIND_OFFSET = 4, 630 KIND_MASK = 7 << KIND_OFFSET, 631 LINKAGE_OFFSET = 7, 632 LINKAGE_MASK = 1 << LINKAGE_OFFSET 633 }; 634 }; 635 636 637 } // End of namespace dwarf 638 639 } // End of namespace llvm 640 641 #endif 642
