master
1/* Declarations and definitions of codes relating to the DWARF2 symbolic
2 debugging information format.
3 Copyright (C) 1992-2025 Free Software Foundation, Inc.
4
5 This file is part of the GNU C Library.
6
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
11
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <https://www.gnu.org/licenses/>. */
20
21#ifndef _DWARF2_H
22#define _DWARF2_H 1
23
24/* This file is derived from the DWARF specification (a public document)
25 Revision 2.0.0 (July 27, 1993) developed by the UNIX International
26 Programming Languages Special Interest Group (UI/PLSIG) and distributed
27 by UNIX International. Copies of this specification are available from
28 UNIX International, 20 Waterview Boulevard, Parsippany, NJ, 07054. */
29
30/* This file is shared between GCC and GDB, and should not contain
31 prototypes. */
32
33#ifndef __ASSEMBLER__
34/* Tag names and codes. */
35
36enum dwarf_tag
37 {
38 DW_TAG_padding = 0x00,
39 DW_TAG_array_type = 0x01,
40 DW_TAG_class_type = 0x02,
41 DW_TAG_entry_point = 0x03,
42 DW_TAG_enumeration_type = 0x04,
43 DW_TAG_formal_parameter = 0x05,
44 DW_TAG_imported_declaration = 0x08,
45 DW_TAG_label = 0x0a,
46 DW_TAG_lexical_block = 0x0b,
47 DW_TAG_member = 0x0d,
48 DW_TAG_pointer_type = 0x0f,
49 DW_TAG_reference_type = 0x10,
50 DW_TAG_compile_unit = 0x11,
51 DW_TAG_string_type = 0x12,
52 DW_TAG_structure_type = 0x13,
53 DW_TAG_subroutine_type = 0x15,
54 DW_TAG_typedef = 0x16,
55 DW_TAG_union_type = 0x17,
56 DW_TAG_unspecified_parameters = 0x18,
57 DW_TAG_variant = 0x19,
58 DW_TAG_common_block = 0x1a,
59 DW_TAG_common_inclusion = 0x1b,
60 DW_TAG_inheritance = 0x1c,
61 DW_TAG_inlined_subroutine = 0x1d,
62 DW_TAG_module = 0x1e,
63 DW_TAG_ptr_to_member_type = 0x1f,
64 DW_TAG_set_type = 0x20,
65 DW_TAG_subrange_type = 0x21,
66 DW_TAG_with_stmt = 0x22,
67 DW_TAG_access_declaration = 0x23,
68 DW_TAG_base_type = 0x24,
69 DW_TAG_catch_block = 0x25,
70 DW_TAG_const_type = 0x26,
71 DW_TAG_constant = 0x27,
72 DW_TAG_enumerator = 0x28,
73 DW_TAG_file_type = 0x29,
74 DW_TAG_friend = 0x2a,
75 DW_TAG_namelist = 0x2b,
76 DW_TAG_namelist_item = 0x2c,
77 DW_TAG_packed_type = 0x2d,
78 DW_TAG_subprogram = 0x2e,
79 DW_TAG_template_type_param = 0x2f,
80 DW_TAG_template_value_param = 0x30,
81 DW_TAG_thrown_type = 0x31,
82 DW_TAG_try_block = 0x32,
83 DW_TAG_variant_part = 0x33,
84 DW_TAG_variable = 0x34,
85 DW_TAG_volatile_type = 0x35,
86 /* SGI/MIPS Extensions */
87 DW_TAG_MIPS_loop = 0x4081,
88 /* GNU extensions */
89 DW_TAG_format_label = 0x4101, /* for FORTRAN 77 and Fortran 90 */
90 DW_TAG_function_template = 0x4102, /* for C++ */
91 DW_TAG_class_template = 0x4103, /* for C++ */
92 DW_TAG_GNU_BINCL = 0x4104,
93 DW_TAG_GNU_EINCL = 0x4105
94 };
95
96#define DW_TAG_lo_user 0x4080
97#define DW_TAG_hi_user 0xffff
98
99/* flag that tells whether entry has a child or not */
100#define DW_children_no 0
101#define DW_children_yes 1
102
103/* Form names and codes. */
104enum dwarf_form
105 {
106 DW_FORM_addr = 0x01,
107 DW_FORM_block2 = 0x03,
108 DW_FORM_block4 = 0x04,
109 DW_FORM_data2 = 0x05,
110 DW_FORM_data4 = 0x06,
111 DW_FORM_data8 = 0x07,
112 DW_FORM_string = 0x08,
113 DW_FORM_block = 0x09,
114 DW_FORM_block1 = 0x0a,
115 DW_FORM_data1 = 0x0b,
116 DW_FORM_flag = 0x0c,
117 DW_FORM_sdata = 0x0d,
118 DW_FORM_strp = 0x0e,
119 DW_FORM_udata = 0x0f,
120 DW_FORM_ref_addr = 0x10,
121 DW_FORM_ref1 = 0x11,
122 DW_FORM_ref2 = 0x12,
123 DW_FORM_ref4 = 0x13,
124 DW_FORM_ref8 = 0x14,
125 DW_FORM_ref_udata = 0x15,
126 DW_FORM_indirect = 0x16
127 };
128
129/* Attribute names and codes. */
130
131enum dwarf_attribute
132 {
133 DW_AT_sibling = 0x01,
134 DW_AT_location = 0x02,
135 DW_AT_name = 0x03,
136 DW_AT_ordering = 0x09,
137 DW_AT_subscr_data = 0x0a,
138 DW_AT_byte_size = 0x0b,
139 DW_AT_bit_offset = 0x0c,
140 DW_AT_bit_size = 0x0d,
141 DW_AT_element_list = 0x0f,
142 DW_AT_stmt_list = 0x10,
143 DW_AT_low_pc = 0x11,
144 DW_AT_high_pc = 0x12,
145 DW_AT_language = 0x13,
146 DW_AT_member = 0x14,
147 DW_AT_discr = 0x15,
148 DW_AT_discr_value = 0x16,
149 DW_AT_visibility = 0x17,
150 DW_AT_import = 0x18,
151 DW_AT_string_length = 0x19,
152 DW_AT_common_reference = 0x1a,
153 DW_AT_comp_dir = 0x1b,
154 DW_AT_const_value = 0x1c,
155 DW_AT_containing_type = 0x1d,
156 DW_AT_default_value = 0x1e,
157 DW_AT_inline = 0x20,
158 DW_AT_is_optional = 0x21,
159 DW_AT_lower_bound = 0x22,
160 DW_AT_producer = 0x25,
161 DW_AT_prototyped = 0x27,
162 DW_AT_return_addr = 0x2a,
163 DW_AT_start_scope = 0x2c,
164 DW_AT_stride_size = 0x2e,
165 DW_AT_upper_bound = 0x2f,
166 DW_AT_abstract_origin = 0x31,
167 DW_AT_accessibility = 0x32,
168 DW_AT_address_class = 0x33,
169 DW_AT_artificial = 0x34,
170 DW_AT_base_types = 0x35,
171 DW_AT_calling_convention = 0x36,
172 DW_AT_count = 0x37,
173 DW_AT_data_member_location = 0x38,
174 DW_AT_decl_column = 0x39,
175 DW_AT_decl_file = 0x3a,
176 DW_AT_decl_line = 0x3b,
177 DW_AT_declaration = 0x3c,
178 DW_AT_discr_list = 0x3d,
179 DW_AT_encoding = 0x3e,
180 DW_AT_external = 0x3f,
181 DW_AT_frame_base = 0x40,
182 DW_AT_friend = 0x41,
183 DW_AT_identifier_case = 0x42,
184 DW_AT_macro_info = 0x43,
185 DW_AT_namelist_items = 0x44,
186 DW_AT_priority = 0x45,
187 DW_AT_segment = 0x46,
188 DW_AT_specification = 0x47,
189 DW_AT_static_link = 0x48,
190 DW_AT_type = 0x49,
191 DW_AT_use_location = 0x4a,
192 DW_AT_variable_parameter = 0x4b,
193 DW_AT_virtuality = 0x4c,
194 DW_AT_vtable_elem_location = 0x4d,
195 /* SGI/MIPS Extensions */
196 DW_AT_MIPS_fde = 0x2001,
197 DW_AT_MIPS_loop_begin = 0x2002,
198 DW_AT_MIPS_tail_loop_begin = 0x2003,
199 DW_AT_MIPS_epilog_begin = 0x2004,
200 DW_AT_MIPS_loop_unroll_factor = 0x2005,
201 DW_AT_MIPS_software_pipeline_depth = 0x2006,
202 DW_AT_MIPS_linkage_name = 0x2007,
203 DW_AT_MIPS_stride = 0x2008,
204 DW_AT_MIPS_abstract_name = 0x2009,
205 DW_AT_MIPS_clone_origin = 0x200a,
206 DW_AT_MIPS_has_inlines = 0x200b,
207 /* GNU extensions. */
208 DW_AT_sf_names = 0x2101,
209 DW_AT_src_info = 0x2102,
210 DW_AT_mac_info = 0x2103,
211 DW_AT_src_coords = 0x2104,
212 DW_AT_body_begin = 0x2105,
213 DW_AT_body_end = 0x2106
214 };
215
216#define DW_AT_lo_user 0x2000 /* implementation-defined range start */
217#define DW_AT_hi_user 0x3ff0 /* implementation-defined range end */
218
219/* Location atom names and codes. */
220
221enum dwarf_location_atom
222 {
223 DW_OP_addr = 0x03,
224 DW_OP_deref = 0x06,
225 DW_OP_const1u = 0x08,
226 DW_OP_const1s = 0x09,
227 DW_OP_const2u = 0x0a,
228 DW_OP_const2s = 0x0b,
229 DW_OP_const4u = 0x0c,
230 DW_OP_const4s = 0x0d,
231 DW_OP_const8u = 0x0e,
232 DW_OP_const8s = 0x0f,
233 DW_OP_constu = 0x10,
234 DW_OP_consts = 0x11,
235 DW_OP_dup = 0x12,
236 DW_OP_drop = 0x13,
237 DW_OP_over = 0x14,
238 DW_OP_pick = 0x15,
239 DW_OP_swap = 0x16,
240 DW_OP_rot = 0x17,
241 DW_OP_xderef = 0x18,
242 DW_OP_abs = 0x19,
243 DW_OP_and = 0x1a,
244 DW_OP_div = 0x1b,
245 DW_OP_minus = 0x1c,
246 DW_OP_mod = 0x1d,
247 DW_OP_mul = 0x1e,
248 DW_OP_neg = 0x1f,
249 DW_OP_not = 0x20,
250 DW_OP_or = 0x21,
251 DW_OP_plus = 0x22,
252 DW_OP_plus_uconst = 0x23,
253 DW_OP_shl = 0x24,
254 DW_OP_shr = 0x25,
255 DW_OP_shra = 0x26,
256 DW_OP_xor = 0x27,
257 DW_OP_bra = 0x28,
258 DW_OP_eq = 0x29,
259 DW_OP_ge = 0x2a,
260 DW_OP_gt = 0x2b,
261 DW_OP_le = 0x2c,
262 DW_OP_lt = 0x2d,
263 DW_OP_ne = 0x2e,
264 DW_OP_skip = 0x2f,
265 DW_OP_lit0 = 0x30,
266 DW_OP_lit1 = 0x31,
267 DW_OP_lit2 = 0x32,
268 DW_OP_lit3 = 0x33,
269 DW_OP_lit4 = 0x34,
270 DW_OP_lit5 = 0x35,
271 DW_OP_lit6 = 0x36,
272 DW_OP_lit7 = 0x37,
273 DW_OP_lit8 = 0x38,
274 DW_OP_lit9 = 0x39,
275 DW_OP_lit10 = 0x3a,
276 DW_OP_lit11 = 0x3b,
277 DW_OP_lit12 = 0x3c,
278 DW_OP_lit13 = 0x3d,
279 DW_OP_lit14 = 0x3e,
280 DW_OP_lit15 = 0x3f,
281 DW_OP_lit16 = 0x40,
282 DW_OP_lit17 = 0x41,
283 DW_OP_lit18 = 0x42,
284 DW_OP_lit19 = 0x43,
285 DW_OP_lit20 = 0x44,
286 DW_OP_lit21 = 0x45,
287 DW_OP_lit22 = 0x46,
288 DW_OP_lit23 = 0x47,
289 DW_OP_lit24 = 0x48,
290 DW_OP_lit25 = 0x49,
291 DW_OP_lit26 = 0x4a,
292 DW_OP_lit27 = 0x4b,
293 DW_OP_lit28 = 0x4c,
294 DW_OP_lit29 = 0x4d,
295 DW_OP_lit30 = 0x4e,
296 DW_OP_lit31 = 0x4f,
297 DW_OP_reg0 = 0x50,
298 DW_OP_reg1 = 0x51,
299 DW_OP_reg2 = 0x52,
300 DW_OP_reg3 = 0x53,
301 DW_OP_reg4 = 0x54,
302 DW_OP_reg5 = 0x55,
303 DW_OP_reg6 = 0x56,
304 DW_OP_reg7 = 0x57,
305 DW_OP_reg8 = 0x58,
306 DW_OP_reg9 = 0x59,
307 DW_OP_reg10 = 0x5a,
308 DW_OP_reg11 = 0x5b,
309 DW_OP_reg12 = 0x5c,
310 DW_OP_reg13 = 0x5d,
311 DW_OP_reg14 = 0x5e,
312 DW_OP_reg15 = 0x5f,
313 DW_OP_reg16 = 0x60,
314 DW_OP_reg17 = 0x61,
315 DW_OP_reg18 = 0x62,
316 DW_OP_reg19 = 0x63,
317 DW_OP_reg20 = 0x64,
318 DW_OP_reg21 = 0x65,
319 DW_OP_reg22 = 0x66,
320 DW_OP_reg23 = 0x67,
321 DW_OP_reg24 = 0x68,
322 DW_OP_reg25 = 0x69,
323 DW_OP_reg26 = 0x6a,
324 DW_OP_reg27 = 0x6b,
325 DW_OP_reg28 = 0x6c,
326 DW_OP_reg29 = 0x6d,
327 DW_OP_reg30 = 0x6e,
328 DW_OP_reg31 = 0x6f,
329 DW_OP_breg0 = 0x70,
330 DW_OP_breg1 = 0x71,
331 DW_OP_breg2 = 0x72,
332 DW_OP_breg3 = 0x73,
333 DW_OP_breg4 = 0x74,
334 DW_OP_breg5 = 0x75,
335 DW_OP_breg6 = 0x76,
336 DW_OP_breg7 = 0x77,
337 DW_OP_breg8 = 0x78,
338 DW_OP_breg9 = 0x79,
339 DW_OP_breg10 = 0x7a,
340 DW_OP_breg11 = 0x7b,
341 DW_OP_breg12 = 0x7c,
342 DW_OP_breg13 = 0x7d,
343 DW_OP_breg14 = 0x7e,
344 DW_OP_breg15 = 0x7f,
345 DW_OP_breg16 = 0x80,
346 DW_OP_breg17 = 0x81,
347 DW_OP_breg18 = 0x82,
348 DW_OP_breg19 = 0x83,
349 DW_OP_breg20 = 0x84,
350 DW_OP_breg21 = 0x85,
351 DW_OP_breg22 = 0x86,
352 DW_OP_breg23 = 0x87,
353 DW_OP_breg24 = 0x88,
354 DW_OP_breg25 = 0x89,
355 DW_OP_breg26 = 0x8a,
356 DW_OP_breg27 = 0x8b,
357 DW_OP_breg28 = 0x8c,
358 DW_OP_breg29 = 0x8d,
359 DW_OP_breg30 = 0x8e,
360 DW_OP_breg31 = 0x8f,
361 DW_OP_regx = 0x90,
362 DW_OP_fbreg = 0x91,
363 DW_OP_bregx = 0x92,
364 DW_OP_piece = 0x93,
365 DW_OP_deref_size = 0x94,
366 DW_OP_xderef_size = 0x95,
367 DW_OP_nop = 0x96
368 };
369
370#define DW_OP_lo_user 0x80 /* implementation-defined range start */
371#define DW_OP_hi_user 0xff /* implementation-defined range end */
372
373/* Type encodings. */
374
375enum dwarf_type
376 {
377 DW_ATE_void = 0x0,
378 DW_ATE_address = 0x1,
379 DW_ATE_boolean = 0x2,
380 DW_ATE_complex_float = 0x3,
381 DW_ATE_float = 0x4,
382 DW_ATE_signed = 0x5,
383 DW_ATE_signed_char = 0x6,
384 DW_ATE_unsigned = 0x7,
385 DW_ATE_unsigned_char = 0x8
386 };
387
388#define DW_ATE_lo_user 0x80
389#define DW_ATE_hi_user 0xff
390
391/* Array ordering names and codes. */
392enum dwarf_array_dim_ordering
393 {
394 DW_ORD_row_major = 0,
395 DW_ORD_col_major = 1
396 };
397
398/* access attribute */
399enum dwarf_access_attribute
400 {
401 DW_ACCESS_public = 1,
402 DW_ACCESS_protected = 2,
403 DW_ACCESS_private = 3
404 };
405
406/* visibility */
407enum dwarf_visibility_attribute
408 {
409 DW_VIS_local = 1,
410 DW_VIS_exported = 2,
411 DW_VIS_qualified = 3
412 };
413
414/* virtuality */
415enum dwarf_virtuality_attribute
416 {
417 DW_VIRTUALITY_none = 0,
418 DW_VIRTUALITY_virtual = 1,
419 DW_VIRTUALITY_pure_virtual = 2
420 };
421
422/* case sensitivity */
423enum dwarf_id_case
424 {
425 DW_ID_case_sensitive = 0,
426 DW_ID_up_case = 1,
427 DW_ID_down_case = 2,
428 DW_ID_case_insensitive = 3
429 };
430
431/* calling convention */
432enum dwarf_calling_convention
433 {
434 DW_CC_normal = 0x1,
435 DW_CC_program = 0x2,
436 DW_CC_nocall = 0x3
437 };
438
439#define DW_CC_lo_user 0x40
440#define DW_CC_hi_user 0xff
441
442/* inline attribute */
443enum dwarf_inline_attribute
444 {
445 DW_INL_not_inlined = 0,
446 DW_INL_inlined = 1,
447 DW_INL_declared_not_inlined = 2,
448 DW_INL_declared_inlined = 3
449 };
450
451/* discriminant lists */
452enum dwarf_discrim_list
453 {
454 DW_DSC_label = 0,
455 DW_DSC_range = 1
456 };
457
458/* line number opcodes */
459enum dwarf_line_number_ops
460 {
461 DW_LNS_extended_op = 0,
462 DW_LNS_copy = 1,
463 DW_LNS_advance_pc = 2,
464 DW_LNS_advance_line = 3,
465 DW_LNS_set_file = 4,
466 DW_LNS_set_column = 5,
467 DW_LNS_negate_stmt = 6,
468 DW_LNS_set_basic_block = 7,
469 DW_LNS_const_add_pc = 8,
470 DW_LNS_fixed_advance_pc = 9
471 };
472
473/* line number extended opcodes */
474enum dwarf_line_number_x_ops
475 {
476 DW_LNE_end_sequence = 1,
477 DW_LNE_set_address = 2,
478 DW_LNE_define_file = 3
479 };
480
481/* call frame information */
482enum dwarf_call_frame_info
483 {
484 DW_CFA_advance_loc = 0x40,
485 DW_CFA_offset = 0x80,
486 DW_CFA_restore = 0xc0,
487 DW_CFA_nop = 0x00,
488 DW_CFA_set_loc = 0x01,
489 DW_CFA_advance_loc1 = 0x02,
490 DW_CFA_advance_loc2 = 0x03,
491 DW_CFA_advance_loc4 = 0x04,
492 DW_CFA_offset_extended = 0x05,
493 DW_CFA_restore_extended = 0x06,
494 DW_CFA_undefined = 0x07,
495 DW_CFA_same_value = 0x08,
496 DW_CFA_register = 0x09,
497 DW_CFA_remember_state = 0x0a,
498 DW_CFA_restore_state = 0x0b,
499 DW_CFA_def_cfa = 0x0c,
500 DW_CFA_def_cfa_register = 0x0d,
501 DW_CFA_def_cfa_offset = 0x0e,
502 DW_CFA_def_cfa_expression = 0x0f,
503 DW_CFA_expression = 0x10,
504 /* Dwarf 2.1 */
505 DW_CFA_offset_extended_sf = 0x11,
506 DW_CFA_def_cfa_sf = 0x12,
507 DW_CFA_def_cfa_offset_sf = 0x13,
508
509 /* SGI/MIPS specific */
510 DW_CFA_MIPS_advance_loc8 = 0x1d,
511
512 /* GNU extensions */
513 DW_CFA_GNU_window_save = 0x2d,
514 DW_CFA_GNU_args_size = 0x2e,
515 DW_CFA_GNU_negative_offset_extended = 0x2f
516 };
517
518#define DW_CIE_ID 0xffffffff
519#define DW_CIE_VERSION 1
520
521#define DW_CFA_extended 0
522#define DW_CFA_low_user 0x1c
523#define DW_CFA_high_user 0x3f
524
525#define DW_CHILDREN_no 0x00
526#define DW_CHILDREN_yes 0x01
527
528#define DW_ADDR_none 0
529
530/* Source language names and codes. */
531
532enum dwarf_source_language
533 {
534 DW_LANG_C89 = 0x0001,
535 DW_LANG_C = 0x0002,
536 DW_LANG_Ada83 = 0x0003,
537 DW_LANG_C_plus_plus = 0x0004,
538 DW_LANG_Cobol74 = 0x0005,
539 DW_LANG_Cobol85 = 0x0006,
540 DW_LANG_Fortran77 = 0x0007,
541 DW_LANG_Fortran90 = 0x0008,
542 DW_LANG_Pascal83 = 0x0009,
543 DW_LANG_Modula2 = 0x000a,
544 DW_LANG_Java = 0x000b,
545 DW_LANG_Mips_Assembler = 0x8001
546 };
547
548
549#define DW_LANG_lo_user 0x8000 /* implementation-defined range start */
550#define DW_LANG_hi_user 0xffff /* implementation-defined range start */
551
552/* Names and codes for macro information. */
553
554enum dwarf_macinfo_record_type
555 {
556 DW_MACINFO_define = 1,
557 DW_MACINFO_undef = 2,
558 DW_MACINFO_start_file = 3,
559 DW_MACINFO_end_file = 4,
560 DW_MACINFO_vendor_ext = 255
561 };
562
563#endif /* !ASSEMBLER */
564
565/* @@@ For use with GNU frame unwind information. */
566
567#define DW_EH_PE_absptr 0x00
568#define DW_EH_PE_omit 0xff
569
570#define DW_EH_PE_uleb128 0x01
571#define DW_EH_PE_udata2 0x02
572#define DW_EH_PE_udata4 0x03
573#define DW_EH_PE_udata8 0x04
574#define DW_EH_PE_sleb128 0x09
575#define DW_EH_PE_sdata2 0x0A
576#define DW_EH_PE_sdata4 0x0B
577#define DW_EH_PE_sdata8 0x0C
578#define DW_EH_PE_signed 0x08
579
580#define DW_EH_PE_pcrel 0x10
581#define DW_EH_PE_textrel 0x20
582#define DW_EH_PE_datarel 0x30
583#define DW_EH_PE_funcrel 0x40
584#define DW_EH_PE_aligned 0x50
585
586#define DW_EH_PE_indirect 0x80
587
588#endif /* dwarf2.h */