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Release 0.9.14.
[wine/multimedia.git] / dlls / dbghelp / dwarf.c
blob053f6628d6421d52f5f79cd1f8bb572691ed6926
1 /*
2 * File dwarf.c - read dwarf2 information from the ELF modules
3 *
4 * Copyright (C) 2005, Raphael Junqueira
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22
23 #include <sys/types.h>
24 #include <fcntl.h>
25 #ifdef HAVE_SYS_STAT_H
26 # include <sys/stat.h>
27 #endif
28 #ifdef HAVE_SYS_MMAN_H
29 #include <sys/mman.h>
30 #endif
31 #include <limits.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #ifdef HAVE_UNISTD_H
35 # include <unistd.h>
36 #endif
37 #include <stdio.h>
38 #ifndef PATH_MAX
39 #define PATH_MAX MAX_PATH
40 #endif
41 #include <assert.h>
42 #include <stdarg.h>
43
44 #include "windef.h"
45 #include "winbase.h"
46 #include "winreg.h"
47 #include "winnls.h"
48
49 #include "dbghelp_private.h"
50
51 #include "wine/debug.h"
52
53 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp_dwarf);
54
55 #if 0
56 static void dump(const void* ptr, unsigned len)
57 {
58 int i, j;
59 BYTE msg[128];
60 static const char hexof[] = "0123456789abcdef";
61 const BYTE* x = (const BYTE*)ptr;
62
63 for (i = 0; i < len; i += 16)
64 {
65 sprintf(msg, "%08x: ", i);
66 memset(msg + 10, ' ', 3 * 16 + 1 + 16);
67 for (j = 0; j < min(16, len - i); j++)
68 {
69 msg[10 + 3 * j + 0] = hexof[x[i + j] >> 4];
70 msg[10 + 3 * j + 1] = hexof[x[i + j] & 15];
71 msg[10 + 3 * j + 2] = ' ';
72 msg[10 + 3 * 16 + 1 + j] = (x[i + j] >= 0x20 && x[i + j] < 0x7f) ?
73 x[i + j] : '.';
74 }
75 msg[10 + 3 * 16] = ' ';
76 msg[10 + 3 * 16 + 1 + 16] = '\0';
77 TRACE("%s\n", msg);
78 }
79 }
80 #endif
81
82 /**
83 *
84 * Main Specs:
85 * http://www.eagercon.com/dwarf/dwarf3std.htm
86 * http://www.eagercon.com/dwarf/dwarf-2.0.0.pdf
87 *
88 * dwarf2.h: http://www.hakpetzna.com/b/binutils/dwarf2_8h-source.html
89 *
90 * example of projects who do dwarf2 parsing:
91 * http://www.x86-64.org/cgi-bin/cvsweb.cgi/binutils.dead/binutils/readelf.c?rev=1.1.1.2
92 * http://elis.ugent.be/diota/log/ltrace_elf.c
93 */
94
95 typedef struct {
96 unsigned char length[4];
97 unsigned char version[2];
98 unsigned char abbrev_offset[4];
99 unsigned char word_size[1];
100 } dwarf2_comp_unit_stream_t;
101
102 typedef struct {
103 unsigned long length;
104 unsigned short version;
105 unsigned long abbrev_offset;
106 unsigned char word_size;
107 } dwarf2_comp_unit_t;
108
109 typedef struct {
110 unsigned int length;
111 unsigned short version;
112 unsigned int prologue_length;
113 unsigned char min_insn_length;
114 unsigned char default_is_stmt;
115 int line_base;
116 unsigned char line_range;
117 unsigned char opcode_base;
118 } dwarf2_line_info_t;
119
120 typedef enum dwarf_tag_e {
121 DW_TAG_padding = 0x00,
122 DW_TAG_array_type = 0x01,
123 DW_TAG_class_type = 0x02,
124 DW_TAG_entry_point = 0x03,
125 DW_TAG_enumeration_type = 0x04,
126 DW_TAG_formal_parameter = 0x05,
127 DW_TAG_imported_declaration = 0x08,
128 DW_TAG_label = 0x0a,
129 DW_TAG_lexical_block = 0x0b,
130 DW_TAG_member = 0x0d,
131 DW_TAG_pointer_type = 0x0f,
132 DW_TAG_reference_type = 0x10,
133 DW_TAG_compile_unit = 0x11,
134 DW_TAG_string_type = 0x12,
135 DW_TAG_structure_type = 0x13,
136 DW_TAG_subroutine_type = 0x15,
137 DW_TAG_typedef = 0x16,
138 DW_TAG_union_type = 0x17,
139 DW_TAG_unspecified_parameters = 0x18,
140 DW_TAG_variant = 0x19,
141 DW_TAG_common_block = 0x1a,
142 DW_TAG_common_inclusion = 0x1b,
143 DW_TAG_inheritance = 0x1c,
144 DW_TAG_inlined_subroutine = 0x1d,
145 DW_TAG_module = 0x1e,
146 DW_TAG_ptr_to_member_type = 0x1f,
147 DW_TAG_set_type = 0x20,
148 DW_TAG_subrange_type = 0x21,
149 DW_TAG_with_stmt = 0x22,
150 DW_TAG_access_declaration = 0x23,
151 DW_TAG_base_type = 0x24,
152 DW_TAG_catch_block = 0x25,
153 DW_TAG_const_type = 0x26,
154 DW_TAG_constant = 0x27,
155 DW_TAG_enumerator = 0x28,
156 DW_TAG_file_type = 0x29,
157 DW_TAG_friend = 0x2a,
158 DW_TAG_namelist = 0x2b,
159 DW_TAG_namelist_item = 0x2c,
160 DW_TAG_packed_type = 0x2d,
161 DW_TAG_subprogram = 0x2e,
162 DW_TAG_template_type_param = 0x2f,
163 DW_TAG_template_value_param = 0x30,
164 DW_TAG_thrown_type = 0x31,
165 DW_TAG_try_block = 0x32,
166 DW_TAG_variant_part = 0x33,
167 DW_TAG_variable = 0x34,
168 DW_TAG_volatile_type = 0x35,
169 /** extensions */
170 DW_TAG_MIPS_loop = 0x4081,
171 DW_TAG_format_label = 0x4101,
172 DW_TAG_function_template = 0x4102,
173 DW_TAG_class_template = 0x4103
174 } dwarf_tag_t;
175
176 typedef enum dwarf_attribute_e {
177 DW_AT_sibling = 0x01,
178 DW_AT_location = 0x02,
179 DW_AT_name = 0x03,
180 DW_AT_ordering = 0x09,
181 DW_AT_subscr_data = 0x0a,
182 DW_AT_byte_size = 0x0b,
183 DW_AT_bit_offset = 0x0c,
184 DW_AT_bit_size = 0x0d,
185 DW_AT_element_list = 0x0f,
186 DW_AT_stmt_list = 0x10,
187 DW_AT_low_pc = 0x11,
188 DW_AT_high_pc = 0x12,
189 DW_AT_language = 0x13,
190 DW_AT_member = 0x14,
191 DW_AT_discr = 0x15,
192 DW_AT_discr_value = 0x16,
193 DW_AT_visibility = 0x17,
194 DW_AT_import = 0x18,
195 DW_AT_string_length = 0x19,
196 DW_AT_common_reference = 0x1a,
197 DW_AT_comp_dir = 0x1b,
198 DW_AT_const_value = 0x1c,
199 DW_AT_containing_type = 0x1d,
200 DW_AT_default_value = 0x1e,
201 DW_AT_inline = 0x20,
202 DW_AT_is_optional = 0x21,
203 DW_AT_lower_bound = 0x22,
204 DW_AT_producer = 0x25,
205 DW_AT_prototyped = 0x27,
206 DW_AT_return_addr = 0x2a,
207 DW_AT_start_scope = 0x2c,
208 DW_AT_stride_size = 0x2e,
209 DW_AT_upper_bound = 0x2f,
210 DW_AT_abstract_origin = 0x31,
211 DW_AT_accessibility = 0x32,
212 DW_AT_address_class = 0x33,
213 DW_AT_artificial = 0x34,
214 DW_AT_base_types = 0x35,
215 DW_AT_calling_convention = 0x36,
216 DW_AT_count = 0x37,
217 DW_AT_data_member_location = 0x38,
218 DW_AT_decl_column = 0x39,
219 DW_AT_decl_file = 0x3a,
220 DW_AT_decl_line = 0x3b,
221 DW_AT_declaration = 0x3c,
222 DW_AT_discr_list = 0x3d,
223 DW_AT_encoding = 0x3e,
224 DW_AT_external = 0x3f,
225 DW_AT_frame_base = 0x40,
226 DW_AT_friend = 0x41,
227 DW_AT_identifier_case = 0x42,
228 DW_AT_macro_info = 0x43,
229 DW_AT_namelist_items = 0x44,
230 DW_AT_priority = 0x45,
231 DW_AT_segment = 0x46,
232 DW_AT_specification = 0x47,
233 DW_AT_static_link = 0x48,
234 DW_AT_type = 0x49,
235 DW_AT_use_location = 0x4a,
236 DW_AT_variable_parameter = 0x4b,
237 DW_AT_virtuality = 0x4c,
238 DW_AT_vtable_elem_location = 0x4d,
239
240 DW_AT_ranges = 0x55,
241 /* extensions */
242 DW_AT_MIPS_fde = 0x2001,
243 DW_AT_MIPS_loop_begin = 0x2002,
244 DW_AT_MIPS_tail_loop_begin = 0x2003,
245 DW_AT_MIPS_epilog_begin = 0x2004,
246 DW_AT_MIPS_loop_unroll_factor = 0x2005,
247 DW_AT_MIPS_software_pipeline_depth = 0x2006,
248 DW_AT_MIPS_linkage_name = 0x2007,
249 DW_AT_MIPS_stride = 0x2008,
250 DW_AT_MIPS_abstract_name = 0x2009,
251 DW_AT_MIPS_clone_origin = 0x200a,
252 DW_AT_MIPS_has_inlines = 0x200b,
253 DW_AT_sf_names = 0x2101,
254 DW_AT_src_info = 0x2102,
255 DW_AT_mac_info = 0x2103,
256 DW_AT_src_coords = 0x2104,
257 DW_AT_body_begin = 0x2105,
258 DW_AT_body_end = 0x2106
259 } dwarf_attribute_t;
260
261 typedef enum dwarf_form_e {
262 DW_FORM_addr = 0x01,
263 DW_FORM_block2 = 0x03,
264 DW_FORM_block4 = 0x04,
265 DW_FORM_data2 = 0x05,
266 DW_FORM_data4 = 0x06,
267 DW_FORM_data8 = 0x07,
268 DW_FORM_string = 0x08,
269 DW_FORM_block = 0x09,
270 DW_FORM_block1 = 0x0a,
271 DW_FORM_data1 = 0x0b,
272 DW_FORM_flag = 0x0c,
273 DW_FORM_sdata = 0x0d,
274 DW_FORM_strp = 0x0e,
275 DW_FORM_udata = 0x0f,
276 DW_FORM_ref_addr = 0x10,
277 DW_FORM_ref1 = 0x11,
278 DW_FORM_ref2 = 0x12,
279 DW_FORM_ref4 = 0x13,
280 DW_FORM_ref8 = 0x14,
281 DW_FORM_ref_udata = 0x15,
282 DW_FORM_indirect = 0x16
283 } dwarf_form_t;
284
285 /** type encoding */
286 typedef enum dwarf_type_e {
287 DW_ATE_void = 0x0,
288 DW_ATE_address = 0x1,
289 DW_ATE_boolean = 0x2,
290 DW_ATE_complex_float = 0x3,
291 DW_ATE_float = 0x4,
292 DW_ATE_signed = 0x5,
293 DW_ATE_signed_char = 0x6,
294 DW_ATE_unsigned = 0x7,
295 DW_ATE_unsigned_char = 0x8
296 } dwarf_type_t;
297
298 typedef enum dwarf_operation_e {
299 DW_OP_addr = 0x03,
300 DW_OP_deref = 0x06,
301 DW_OP_const1u = 0x08,
302 DW_OP_const1s = 0x09,
303 DW_OP_const2u = 0x0a,
304 DW_OP_const2s = 0x0b,
305 DW_OP_const4u = 0x0c,
306 DW_OP_const4s = 0x0d,
307 DW_OP_const8u = 0x0e,
308 DW_OP_const8s = 0x0f,
309 DW_OP_constu = 0x10,
310 DW_OP_consts = 0x11,
311 DW_OP_dup = 0x12,
312 DW_OP_drop = 0x13,
313 DW_OP_over = 0x14,
314 DW_OP_pick = 0x15,
315 DW_OP_swap = 0x16,
316 DW_OP_rot = 0x17,
317 DW_OP_xderef = 0x18,
318 DW_OP_abs = 0x19,
319 DW_OP_and = 0x1a,
320 DW_OP_div = 0x1b,
321 DW_OP_minus = 0x1c,
322 DW_OP_mod = 0x1d,
323 DW_OP_mul = 0x1e,
324 DW_OP_neg = 0x1f,
325 DW_OP_not = 0x20,
326 DW_OP_or = 0x21,
327 DW_OP_plus = 0x22,
328 DW_OP_plus_uconst = 0x23,
329 DW_OP_shl = 0x24,
330 DW_OP_shr = 0x25,
331 DW_OP_shra = 0x26,
332 DW_OP_xor = 0x27,
333 DW_OP_bra = 0x28,
334 DW_OP_eq = 0x29,
335 DW_OP_ge = 0x2a,
336 DW_OP_gt = 0x2b,
337 DW_OP_le = 0x2c,
338 DW_OP_lt = 0x2d,
339 DW_OP_ne = 0x2e,
340 DW_OP_skip = 0x2f,
341 DW_OP_lit0 = 0x30,
342 DW_OP_lit1 = 0x31,
343 DW_OP_lit2 = 0x32,
344 DW_OP_lit3 = 0x33,
345 DW_OP_lit4 = 0x34,
346 DW_OP_lit5 = 0x35,
347 DW_OP_lit6 = 0x36,
348 DW_OP_lit7 = 0x37,
349 DW_OP_lit8 = 0x38,
350 DW_OP_lit9 = 0x39,
351 DW_OP_lit10 = 0x3a,
352 DW_OP_lit11 = 0x3b,
353 DW_OP_lit12 = 0x3c,
354 DW_OP_lit13 = 0x3d,
355 DW_OP_lit14 = 0x3e,
356 DW_OP_lit15 = 0x3f,
357 DW_OP_lit16 = 0x40,
358 DW_OP_lit17 = 0x41,
359 DW_OP_lit18 = 0x42,
360 DW_OP_lit19 = 0x43,
361 DW_OP_lit20 = 0x44,
362 DW_OP_lit21 = 0x45,
363 DW_OP_lit22 = 0x46,
364 DW_OP_lit23 = 0x47,
365 DW_OP_lit24 = 0x48,
366 DW_OP_lit25 = 0x49,
367 DW_OP_lit26 = 0x4a,
368 DW_OP_lit27 = 0x4b,
369 DW_OP_lit28 = 0x4c,
370 DW_OP_lit29 = 0x4d,
371 DW_OP_lit30 = 0x4e,
372 DW_OP_lit31 = 0x4f,
373 DW_OP_reg0 = 0x50,
374 DW_OP_reg1 = 0x51,
375 DW_OP_reg2 = 0x52,
376 DW_OP_reg3 = 0x53,
377 DW_OP_reg4 = 0x54,
378 DW_OP_reg5 = 0x55,
379 DW_OP_reg6 = 0x56,
380 DW_OP_reg7 = 0x57,
381 DW_OP_reg8 = 0x58,
382 DW_OP_reg9 = 0x59,
383 DW_OP_reg10 = 0x5a,
384 DW_OP_reg11 = 0x5b,
385 DW_OP_reg12 = 0x5c,
386 DW_OP_reg13 = 0x5d,
387 DW_OP_reg14 = 0x5e,
388 DW_OP_reg15 = 0x5f,
389 DW_OP_reg16 = 0x60,
390 DW_OP_reg17 = 0x61,
391 DW_OP_reg18 = 0x62,
392 DW_OP_reg19 = 0x63,
393 DW_OP_reg20 = 0x64,
394 DW_OP_reg21 = 0x65,
395 DW_OP_reg22 = 0x66,
396 DW_OP_reg23 = 0x67,
397 DW_OP_reg24 = 0x68,
398 DW_OP_reg25 = 0x69,
399 DW_OP_reg26 = 0x6a,
400 DW_OP_reg27 = 0x6b,
401 DW_OP_reg28 = 0x6c,
402 DW_OP_reg29 = 0x6d,
403 DW_OP_reg30 = 0x6e,
404 DW_OP_reg31 = 0x6f,
405 DW_OP_breg0 = 0x70,
406 DW_OP_breg1 = 0x71,
407 DW_OP_breg2 = 0x72,
408 DW_OP_breg3 = 0x73,
409 DW_OP_breg4 = 0x74,
410 DW_OP_breg5 = 0x75,
411 DW_OP_breg6 = 0x76,
412 DW_OP_breg7 = 0x77,
413 DW_OP_breg8 = 0x78,
414 DW_OP_breg9 = 0x79,
415 DW_OP_breg10 = 0x7a,
416 DW_OP_breg11 = 0x7b,
417 DW_OP_breg12 = 0x7c,
418 DW_OP_breg13 = 0x7d,
419 DW_OP_breg14 = 0x7e,
420 DW_OP_breg15 = 0x7f,
421 DW_OP_breg16 = 0x80,
422 DW_OP_breg17 = 0x81,
423 DW_OP_breg18 = 0x82,
424 DW_OP_breg19 = 0x83,
425 DW_OP_breg20 = 0x84,
426 DW_OP_breg21 = 0x85,
427 DW_OP_breg22 = 0x86,
428 DW_OP_breg23 = 0x87,
429 DW_OP_breg24 = 0x88,
430 DW_OP_breg25 = 0x89,
431 DW_OP_breg26 = 0x8a,
432 DW_OP_breg27 = 0x8b,
433 DW_OP_breg28 = 0x8c,
434 DW_OP_breg29 = 0x8d,
435 DW_OP_breg30 = 0x8e,
436 DW_OP_breg31 = 0x8f,
437 DW_OP_regx = 0x90,
438 DW_OP_fbreg = 0x91,
439 DW_OP_bregx = 0x92,
440 DW_OP_piece = 0x93,
441 DW_OP_deref_size = 0x94,
442 DW_OP_xderef_size = 0x95,
443 DW_OP_nop = 0x96
444 } dwarf_operation_t;
445
446 enum dwarf_calling_convention
447 {
448 DW_CC_normal = 0x1,
449 DW_CC_program = 0x2,
450 DW_CC_nocall = 0x3
451 };
452
453 #define DW_CC_lo_user 0x40
454 #define DW_CC_hi_user 0xff
455
456
457 /**
458 * Parsers
459 */
460
461 typedef struct dwarf2_abbrev_entry_attr_s {
462 unsigned long attribute;
463 unsigned long form;
464 struct dwarf2_abbrev_entry_attr_s* next;
465 } dwarf2_abbrev_entry_attr_t;
466
467 typedef struct dwarf2_abbrev_entry_s {
468 unsigned long entry_code;
469 unsigned long tag;
470 unsigned char have_child;
471 dwarf2_abbrev_entry_attr_t* attrs;
472 struct dwarf2_abbrev_entry_s* next;
473 } dwarf2_abbrev_entry_t;
474
475 typedef struct dwarf2_abbrev_table_s {
476 dwarf2_abbrev_entry_t* first;
477 unsigned n_entries;
478 } dwarf2_abbrev_table_t;
479
480 typedef struct dwarf2_parse_context_s {
481 dwarf2_abbrev_table_t* abbrev_table;
482 const unsigned char* data_stream;
483 const unsigned char* data;
484 const unsigned char* start_data;
485 const unsigned char* end_data;
486 const unsigned char* str_section;
487 unsigned long offset;
488 unsigned char word_size;
489 unsigned char level;
490 } dwarf2_parse_context_t;
491
492 static unsigned char dwarf2_parse_byte(dwarf2_parse_context_t* ctx)
493 {
494 unsigned char uvalue = *(const unsigned char*) ctx->data;
495 ctx->data += 1;
496 return uvalue;
497 }
498
499 static unsigned short dwarf2_parse_u2(dwarf2_parse_context_t* ctx)
500 {
501 unsigned short uvalue = *(const unsigned short*) ctx->data;
502 ctx->data += 2;
503 return uvalue;
504 }
505
506 static unsigned long dwarf2_parse_u4(dwarf2_parse_context_t* ctx)
507 {
508 unsigned long uvalue = *(const unsigned int*) ctx->data;
509 ctx->data += 4;
510 return uvalue;
511 }
512
513 static unsigned long dwarf2_leb128_as_unsigned(dwarf2_parse_context_t* ctx)
514 {
515 unsigned long ret = 0;
516 unsigned char byte;
517 unsigned shift = 0;
518
519 assert( NULL != ctx );
520
521 while (1) {
522 byte = dwarf2_parse_byte(ctx);
523 ret |= (byte & 0x7f) << shift;
524 shift += 7;
525 if (0 == (byte & 0x80)) { break ; }
526 }
527
528 return ret;
529 }
530
531 static long dwarf2_leb128_as_signed(dwarf2_parse_context_t* ctx)
532 {
533 long ret = 0;
534 unsigned char byte;
535 unsigned shift = 0;
536 const unsigned size = sizeof(int) * 8;
537
538 assert( NULL != ctx );
539
540 while (1) {
541 byte = dwarf2_parse_byte(ctx);
542 ret |= (byte & 0x7f) << shift;
543 shift += 7;
544 if (0 == (byte & 0x80)) { break ; }
545 }
546 /* as spec: sign bit of byte is 2nd high order bit (80x40)
547 * -> 0x80 is used as flag.
548 */
549 if ((shift < size) && (byte & 0x40)) {
550 ret |= - (1 << shift);
551 }
552 return ret;
553 }
554
555 static const char* dwarf2_debug_ctx(dwarf2_parse_context_t* ctx)
556 {
557 /*return wine_dbg_sprintf("ctx(0x%x,%u)", ctx->data - ctx->start_data, ctx->level); */
558 return wine_dbg_sprintf("ctx(0x%x,%u)", ctx->data - ctx->data_stream, ctx->level);
559 }
560 static const char* dwarf2_debug_attr(dwarf2_abbrev_entry_attr_t* attr)
561 {
562 return wine_dbg_sprintf("attr(attr:0x%lx,form:0x%lx)", attr->attribute, attr->form);
563 }
564
565 static void dwarf2_check_sibling(dwarf2_parse_context_t* ctx, unsigned long next_sibling)
566 {
567 if (0 < next_sibling && ctx->data != ctx->data_stream + next_sibling) {
568 if ((ctx->data + 1) != ctx->data_stream + next_sibling) {
569 /** padding check */
570 WARN("cursor error for %s should be sibling<0x%lx>\n", dwarf2_debug_ctx(ctx), next_sibling);
571 }
572 ctx->data = ctx->data_stream + next_sibling;
573 }
574 }
575
576
577 static dwarf2_abbrev_entry_attr_t* dwarf2_abbrev_entry_add_attr(dwarf2_abbrev_entry_t* abbrev_entry, unsigned long attribute, unsigned long form)
578 {
579 dwarf2_abbrev_entry_attr_t* ret = NULL;
580 dwarf2_abbrev_entry_attr_t* it = NULL;
581
582 assert( NULL != abbrev_entry );
583 ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(dwarf2_abbrev_entry_attr_t));
584 assert( NULL != ret );
585
586 ret->attribute = attribute;
587 ret->form = form;
588
589 ret->next = NULL;
590 if (NULL == abbrev_entry->attrs) {
591 abbrev_entry->attrs = ret;
592 } else {
593 for (it = abbrev_entry->attrs; NULL != it->next; it = it->next) ;
594 it->next = ret;
595 }
596 return ret;
597 }
598
599 static dwarf2_abbrev_entry_t* dwarf2_abbrev_table_add_entry(dwarf2_abbrev_table_t* abbrev_table, unsigned long entry_code, unsigned long tag, unsigned char have_child)
600 {
601 dwarf2_abbrev_entry_t* ret = NULL;
602
603 assert( NULL != abbrev_table );
604 ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(dwarf2_abbrev_entry_t));
605 assert( NULL != ret );
606
607 TRACE("(table:%p,n_entries:%u) entry_code(%lu) tag(0x%lx) have_child(%u) -> %p\n", abbrev_table, abbrev_table->n_entries, entry_code, tag, have_child, ret);
608
609 ret->entry_code = entry_code;
610 ret->tag = tag;
611 ret->have_child = have_child;
612 ret->attrs = NULL;
613
614 ret->next = abbrev_table->first;
615 abbrev_table->first = ret;
616 abbrev_table->n_entries++;
617 return ret;
618 }
619
620 static dwarf2_abbrev_entry_t* dwarf2_abbrev_table_find_entry(dwarf2_abbrev_table_t* abbrev_table, unsigned long entry_code)
621 {
622 dwarf2_abbrev_entry_t* ret = NULL;
623
624 assert( NULL != abbrev_table );
625 for (ret = abbrev_table->first; ret; ret = ret->next) {
626 if (ret->entry_code == entry_code) { break ; }
627 }
628 return ret;
629 }
630
631 static void dwarf2_abbrev_table_free(dwarf2_abbrev_table_t* abbrev_table)
632 {
633 dwarf2_abbrev_entry_t* entry = NULL;
634 dwarf2_abbrev_entry_t* next_entry = NULL;
635 assert( NULL != abbrev_table );
636 for (entry = abbrev_table->first; NULL != entry; entry = next_entry) {
637 dwarf2_abbrev_entry_attr_t* attr = NULL;
638 dwarf2_abbrev_entry_attr_t* next_attr = NULL;
639 for (attr = entry->attrs; NULL != attr; attr = next_attr) {
640 next_attr = attr->next;
641 HeapFree(GetProcessHeap(), 0, attr);
642 }
643 next_entry = entry->next;
644 HeapFree(GetProcessHeap(), 0, entry);
645 }
646 abbrev_table->first = NULL;
647 abbrev_table->n_entries = 0;
648 }
649
650 static dwarf2_abbrev_table_t* dwarf2_parse_abbrev_set(dwarf2_parse_context_t* abbrev_ctx)
651 {
652 dwarf2_abbrev_table_t* abbrev_table = NULL;
653
654 TRACE("%s, end at %p\n", dwarf2_debug_ctx(abbrev_ctx), abbrev_ctx->end_data);
655
656 assert( NULL != abbrev_ctx );
657 abbrev_table = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(dwarf2_abbrev_table_t));
658 assert( NULL != abbrev_table );
659
660 while (abbrev_ctx->data < abbrev_ctx->end_data) {
661 unsigned long entry_code;
662 unsigned long tag;
663 unsigned char have_child;
664 dwarf2_abbrev_entry_t* abbrev_entry;
665
666 TRACE("now at %s\n", dwarf2_debug_ctx(abbrev_ctx));
667 entry_code = dwarf2_leb128_as_unsigned(abbrev_ctx);
668 TRACE("found entry_code %lu\n", entry_code);
669 if (0 == entry_code) {
670 TRACE("NULL entry code at %s\n", dwarf2_debug_ctx(abbrev_ctx));
671 break ;
672 }
673 tag = dwarf2_leb128_as_unsigned(abbrev_ctx);
674 have_child = dwarf2_parse_byte(abbrev_ctx);
675
676 abbrev_entry = dwarf2_abbrev_table_add_entry(abbrev_table, entry_code, tag, have_child);
677 assert( NULL != abbrev_entry );
678 while (1) {
679 unsigned long attribute;
680 unsigned long form;
681 attribute = dwarf2_leb128_as_unsigned(abbrev_ctx);
682 form = dwarf2_leb128_as_unsigned(abbrev_ctx);
683 if (0 == attribute) break;
684 dwarf2_abbrev_entry_add_attr(abbrev_entry, attribute, form);
685 }
686 }
687
688 TRACE("found %u entries\n", abbrev_table->n_entries);
689 return abbrev_table;
690 }
691
692 static const char* dwarf2_parse_attr_as_string(dwarf2_abbrev_entry_attr_t* attr,
693 dwarf2_parse_context_t* ctx)
694 {
695 const char* ret = NULL;
696 switch (attr->form) {
697 case DW_FORM_string:
698 ret = (const char*) ctx->data;
699 ctx->data += strlen(ret) + 1;
700 break;
701 case DW_FORM_strp:
702 {
703 unsigned long offset = dwarf2_parse_u4(ctx);
704 ret = (const char*) ctx->str_section + offset;
705 /*FIXME("Unsupported indirect string format offset 0x%lx (in .debug_str)\n", offset);*/
706 }
707 break;
708 default:
709 ERR("Unsupported string format 0x%lx for attr 0x%lx\n", attr->form, attr->attribute);
710 }
711 return ret;
712 }
713
714 static unsigned long dwarf2_parse_attr_as_addr(dwarf2_abbrev_entry_attr_t* attr,
715 dwarf2_parse_context_t* ctx)
716 {
717 unsigned long offset = 0;
718 switch (ctx->word_size) {
719 case 4:
720 offset = *(const unsigned int*) ctx->data;
721 break;
722 case 8:
723 default:
724 FIXME("Unsupported Word Size %u\n", ctx->word_size);
725 }
726 ctx->data += ctx->word_size;
727 return offset;
728 }
729
730 static unsigned long dwarf2_parse_attr_as_ref(dwarf2_abbrev_entry_attr_t* attr,
731 dwarf2_parse_context_t* ctx)
732 {
733 unsigned long uvalue = 0;
734 switch (attr->form) {
735 case DW_FORM_ref1:
736 uvalue = ctx->offset + dwarf2_parse_byte(ctx);
737 TRACE("ref1<0x%lx>\n", uvalue);
738 break;
739
740 case DW_FORM_ref2:
741 uvalue = ctx->offset + dwarf2_parse_u2(ctx);
742 TRACE("ref2<0x%lx>\n", uvalue);
743 break;
744
745 case DW_FORM_ref4:
746 uvalue = ctx->offset + dwarf2_parse_u4(ctx);
747 TRACE("ref4<0x%lx>\n", uvalue);
748 break;
749
750 case DW_FORM_ref8:
751 /* FIXME: 64bits support */
752 /*
753 uvalue = ctx->offset + dwarf2_parse_u8(ctx);
754 TRACE("ref8<0x%lx>\n", uvalue);
755 */
756 ctx->data += 8;
757 break;
758 }
759 return uvalue;
760 }
761
762
763 static unsigned long dwarf2_parse_attr_as_data(dwarf2_abbrev_entry_attr_t* attr,
764 dwarf2_parse_context_t* ctx)
765 {
766 unsigned long uvalue = 0;
767 switch (attr->form) {
768 case DW_FORM_data1:
769 uvalue = dwarf2_parse_byte(ctx);
770 TRACE("data1<%lu>\n", uvalue);
771 break;
772
773 case DW_FORM_data2:
774 uvalue = dwarf2_parse_u2(ctx);
775 TRACE("data2<%lu>\n", uvalue);
776 break;
777
778 case DW_FORM_data4:
779 uvalue = dwarf2_parse_u4(ctx);
780 TRACE("data4<%lu>\n", uvalue);
781 break;
782
783 case DW_FORM_data8:
784 FIXME("Unsupported 64bits support\n");
785 ctx->data += 8;
786 break;
787 }
788 return uvalue;
789 }
790
791 static void dwarf2_parse_attr(dwarf2_abbrev_entry_attr_t* attr,
792 dwarf2_parse_context_t* ctx)
793 {
794 const unsigned long attribute = attr->attribute;
795 const unsigned long form = attr->form;
796 unsigned long uvalue = 0;
797 long svalue = 0;
798 const char* str = NULL;
799
800 TRACE("(attr:0x%lx,form:0x%lx)\n", attribute, form);
801
802 switch (form) {
803 case DW_FORM_ref_addr:
804 case DW_FORM_addr:
805 uvalue = dwarf2_parse_attr_as_addr(attr, ctx);
806 break;
807
808 case DW_FORM_flag:
809 uvalue = dwarf2_parse_byte(ctx);
810 TRACE("flag<0x%lx>\n", uvalue);
811 break;
812
813 case DW_FORM_data1:
814 uvalue = dwarf2_parse_byte(ctx);
815 TRACE("data1<%lu>\n", uvalue);
816 break;
817
818 case DW_FORM_data2:
819 uvalue = dwarf2_parse_u2(ctx);
820 TRACE("data2<%lu>\n", uvalue);
821 break;
822
823 case DW_FORM_data4:
824 uvalue = dwarf2_parse_u4(ctx);
825 TRACE("data4<%lu>\n", uvalue);
826 break;
827
828 case DW_FORM_ref1:
829 case DW_FORM_ref2:
830 case DW_FORM_ref4:
831 case DW_FORM_ref8:
832 uvalue = dwarf2_parse_attr_as_ref(attr, ctx);
833 /*TRACE("ref<0x%lx>\n", ctx->offset + uvalue);*/
834 break;
835
836 case DW_FORM_data8:
837 FIXME("Unsupported 64bits support\n");
838 ctx->data += 8;
839 break;
840
841 case DW_FORM_sdata:
842 svalue = dwarf2_leb128_as_signed(ctx);
843 break;
844
845 case DW_FORM_ref_udata:
846 case DW_FORM_udata:
847 uvalue = dwarf2_leb128_as_unsigned(ctx);
848 break;
849
850 case DW_FORM_string:
851 case DW_FORM_strp:
852 str = dwarf2_parse_attr_as_string(attr, ctx);
853 TRACE("string<%s>\n", str);
854 break;
855
856 case DW_FORM_block:
857 uvalue = dwarf2_leb128_as_unsigned(ctx);
858 ctx->data += uvalue;
859 break;
860
861 case DW_FORM_block1:
862 uvalue = dwarf2_parse_byte(ctx);
863 ctx->data += uvalue;
864 break;
865
866 case DW_FORM_block2:
867 uvalue = dwarf2_parse_u2(ctx);
868 ctx->data += uvalue;
869 break;
870
871 case DW_FORM_block4:
872 uvalue = dwarf2_parse_u4(ctx);
873 ctx->data += uvalue;
874 break;
875
876 default:
877 break;
878 }
879 }
880
881 static struct symt* dwarf2_find_symt_by_ref(struct module* module, unsigned long ref)
882 {
883 TRACE("want ref<0x%lx>\n", ref);
884 return NULL;
885 }
886
887 static struct symt* dwarf2_add_symt_ref(struct module* module, unsigned long ref, struct symt* symt)
888 {
889 if (NULL != symt) return NULL;
890 return NULL;
891 }
892
893 static struct symt_basic* dwarf2_parse_base_type(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
894 {
895 struct symt_basic* symt = NULL;
896 const char* name = NULL;
897 unsigned size = 0;
898 unsigned encoding = 0;
899 enum BasicType bt;
900 dwarf2_abbrev_entry_attr_t* attr = NULL;
901
902 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
903
904 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
905 switch (attr->attribute) {
906 case DW_AT_name:
907 name = dwarf2_parse_attr_as_string(attr, ctx);
908 TRACE("found name %s\n", name);
909 break;
910 case DW_AT_byte_size:
911 size = dwarf2_parse_byte(ctx);
912 break;
913 case DW_AT_encoding:
914 encoding = dwarf2_parse_byte(ctx);
915 break;
916 default:
917 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
918 dwarf2_parse_attr(attr, ctx);
919 }
920 }
921 switch (encoding) {
922 case DW_ATE_void: bt = btVoid; break;
923 case DW_ATE_address: bt = btULong; break;
924 case DW_ATE_boolean: bt = btBool; break;
925 case DW_ATE_complex_float: bt = btComplex; break;
926 case DW_ATE_float: bt = btFloat; break;
927 case DW_ATE_signed: bt = btInt; break;
928 case DW_ATE_unsigned: bt = btUInt; break;
929 case DW_ATE_signed_char: bt = btChar; break;
930 case DW_ATE_unsigned_char: bt = btChar; break;
931 default:
932 bt = btNoType;
933 }
934 /*TRACE("symt_new_basic(%p, %u, %s, %u)", module, bt, name, size);*/
935 symt = symt_new_basic(module, bt, name, size);
936
937 if (entry->have_child) {
938 FIXME("Unsupported children\n");
939 }
940 return symt;
941 }
942
943 static struct symt_typedef* dwarf2_parse_typedef(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
944 {
945 struct symt_typedef* symt = NULL;
946 struct symt* ref_type = NULL;
947 const char* name = NULL;
948 dwarf2_abbrev_entry_attr_t* attr = NULL;
949
950 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
951
952 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
953 switch (attr->attribute) {
954 case DW_AT_name:
955 name = dwarf2_parse_attr_as_string(attr, ctx);
956 TRACE("found name %s\n", name);
957 break;
958 case DW_AT_type:
959 {
960 unsigned long ref = dwarf2_parse_attr_as_ref(attr, ctx);
961 ref_type = dwarf2_find_symt_by_ref(module, ref);
962 }
963 break;
964 case DW_AT_decl_file:
965 case DW_AT_decl_line:
966 dwarf2_parse_attr(attr, ctx);
967 break;
968 default:
969 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
970 dwarf2_parse_attr(attr, ctx);
971 }
972 }
973 if (NULL != name) {
974 symt = symt_new_typedef(module, ref_type, name);
975 }
976
977 if (entry->have_child) {
978 FIXME("Unsupported children\n");
979 }
980 return symt;
981 }
982
983 static struct symt_pointer* dwarf2_parse_pointer_type(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
984 {
985 struct symt_pointer* symt = NULL;
986 struct symt* ref_type = NULL;
987 unsigned size = 0;
988 dwarf2_abbrev_entry_attr_t* attr = NULL;
989
990 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
991
992 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
993 switch (attr->attribute) {
994 case DW_AT_byte_size:
995 size = dwarf2_parse_byte(ctx);
996 break;
997 case DW_AT_type:
998 {
999 unsigned long ref = dwarf2_parse_attr_as_ref(attr, ctx);
1000 ref_type = dwarf2_find_symt_by_ref(module, ref);
1001 }
1002 break;
1003 default:
1004 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1005 dwarf2_parse_attr(attr, ctx);
1006 }
1007 }
1008 symt = symt_new_pointer(module, ref_type);
1009
1010 if (entry->have_child) {
1011 FIXME("Unsupported children\n");
1012 }
1013 return symt;
1014 }
1015
1016 static void dwarf2_parse_array_subrange_type(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx, struct symt_array* parent)
1017 {
1018 unsigned min = 0;
1019 unsigned max = 0;
1020 struct symt* idx_type = NULL;
1021 dwarf2_abbrev_entry_attr_t* attr = NULL;
1022
1023 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1024
1025 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1026 switch (attr->attribute) {
1027 case DW_AT_type:
1028 {
1029 unsigned long ref = dwarf2_parse_attr_as_ref(attr, ctx);
1030 idx_type = dwarf2_find_symt_by_ref(module, ref);
1031 /** check if idx_type is a basic_type integer */
1032 }
1033 break;
1034 case DW_AT_lower_bound:
1035 TRACE("%s %s, lower_bound\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1036 min = dwarf2_parse_attr_as_data(attr, ctx);
1037 break;
1038 case DW_AT_upper_bound:
1039 TRACE("%s %s, upper_bound\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1040 max = dwarf2_parse_attr_as_data(attr, ctx);
1041 break;
1042 case DW_AT_count:
1043 TRACE("%s %s, count min:%u\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr), min);
1044 max = min + dwarf2_parse_attr_as_data(attr, ctx);
1045 break;
1046 default:
1047 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1048 dwarf2_parse_attr(attr, ctx);
1049 }
1050 }
1051 parent->start = min;
1052 parent->end = max;
1053 parent->index_type = idx_type;
1054
1055 TRACE("found min:%u max:%u\n", min, max);
1056
1057 if (entry->have_child) {
1058 FIXME("Unsupported children\n");
1059 }
1060 }
1061
1062
1063 static struct symt_array* dwarf2_parse_array_type(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
1064 {
1065 struct symt_array* symt = NULL;
1066 struct symt* ref_type = NULL;
1067 unsigned min = 0;
1068 unsigned max = 0;
1069 dwarf2_abbrev_entry_attr_t* attr = NULL;
1070 unsigned long next_sibling = 0;
1071
1072 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1073
1074 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1075 switch (attr->attribute) {
1076 case DW_AT_sibling:
1077 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1078 break;
1079 case DW_AT_type:
1080 {
1081 unsigned long ref = dwarf2_parse_attr_as_ref(attr, ctx);
1082 ref_type = dwarf2_find_symt_by_ref(module, ref);
1083 }
1084 break;
1085 default:
1086 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1087 dwarf2_parse_attr(attr, ctx);
1088 }
1089 }
1090
1091 /* FIXME: ugly as hell */
1092 symt = symt_new_array(module, min, max, ref_type, NULL);
1093
1094 if (entry->have_child) { /** any interest to not have child ? */
1095 ++ctx->level;
1096 while (ctx->data < ctx->end_data) {
1097 dwarf2_abbrev_entry_t* entry = NULL;
1098 unsigned long entry_code;
1099 unsigned long entry_ref = 0;
1100
1101 entry_ref = ctx->data - ctx->data_stream;
1102
1103 entry_code = dwarf2_leb128_as_unsigned(ctx);
1104 TRACE("found entry_code %lu at 0x%lx\n", entry_code, entry_ref);
1105 if (0 == entry_code) {
1106 break ;
1107 }
1108
1109 entry = dwarf2_abbrev_table_find_entry(ctx->abbrev_table, entry_code);
1110 assert( NULL != entry );
1111
1112 switch (entry->tag) {
1113 case DW_TAG_subrange_type:
1114 dwarf2_parse_array_subrange_type(module, entry, ctx, symt);
1115 break;
1116 default:
1117 {
1118 dwarf2_abbrev_entry_attr_t* attr;
1119 TRACE("Unhandled Tag type 0x%lx at %s, for %lu\n", entry->tag, dwarf2_debug_ctx(ctx), entry->entry_code);
1120 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1121 dwarf2_parse_attr(attr, ctx);
1122 }
1123 }
1124 break;
1125 }
1126 }
1127 --ctx->level;
1128 }
1129
1130 /** set correct data cursor */
1131 dwarf2_check_sibling(ctx, next_sibling);
1132
1133 return symt;
1134 }
1135
1136 static struct symt_typedef* dwarf2_parse_const_type(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
1137 {
1138 struct symt_typedef* symt = NULL;
1139 struct symt* ref_type = NULL;
1140 dwarf2_abbrev_entry_attr_t* attr = NULL;
1141 unsigned long next_sibling = 0;
1142
1143 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1144
1145 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1146 switch (attr->attribute) {
1147 case DW_AT_type:
1148 {
1149 unsigned long ref = dwarf2_parse_attr_as_ref(attr, ctx);
1150 ref_type = dwarf2_find_symt_by_ref(module, ref);
1151 }
1152 break;
1153 default:
1154 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1155 dwarf2_parse_attr(attr, ctx);
1156 }
1157 }
1158 FIXME("need to generate a name\n");
1159 symt = symt_new_typedef(module, ref_type, "");
1160
1161 if (entry->have_child) {
1162 FIXME("Unsupported children\n");
1163 }
1164
1165 /** set correct data cursor */
1166 dwarf2_check_sibling(ctx, next_sibling);
1167
1168 return symt;
1169 }
1170
1171 static struct symt_typedef* dwarf2_parse_reference_type(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
1172 {
1173 struct symt_typedef* symt = NULL;
1174 struct symt* ref_type = NULL;
1175 dwarf2_abbrev_entry_attr_t* attr = NULL;
1176 unsigned long next_sibling = 0;
1177
1178 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1179
1180 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1181 switch (attr->attribute) {
1182 case DW_AT_sibling:
1183 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1184 break;
1185 case DW_AT_type:
1186 {
1187 unsigned long ref = dwarf2_parse_attr_as_ref(attr, ctx);
1188 ref_type = dwarf2_find_symt_by_ref(module, ref);
1189 }
1190 break;
1191 default:
1192 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1193 dwarf2_parse_attr(attr, ctx);
1194 }
1195 }
1196 FIXME("need to generate a name\n");
1197 symt = symt_new_typedef(module, ref_type, "");
1198
1199 if (entry->have_child) {
1200 FIXME("Unsupported children\n");
1201 }
1202
1203 /** set correct data cursor */
1204 dwarf2_check_sibling(ctx, next_sibling);
1205
1206 return symt;
1207 }
1208
1209 static void dwarf2_parse_udt_member(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx, struct symt_udt* parent)
1210 {
1211 struct symt* elt_type = NULL;
1212 const char* name = NULL;
1213 unsigned long offset = 0;
1214 unsigned size = 0;
1215 dwarf2_abbrev_entry_attr_t* attr = NULL;
1216 unsigned long next_sibling = 0;
1217
1218 assert( NULL != parent );
1219
1220 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1221
1222 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1223 switch (attr->attribute) {
1224 case DW_AT_sibling:
1225 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1226 break;
1227 case DW_AT_name:
1228 name = dwarf2_parse_attr_as_string(attr, ctx);
1229 TRACE("found name %s\n", name);
1230 break;
1231 case DW_AT_type:
1232 {
1233 unsigned long ref = dwarf2_parse_attr_as_ref(attr, ctx);
1234 elt_type = dwarf2_find_symt_by_ref(module, ref);
1235 }
1236 break;
1237 case DW_AT_data_member_location:
1238 {
1239 unsigned long uvalue = 0;
1240 TRACE("found member_location at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1241 /*offset = dwarf2_parse_attr_as_data(attr, ctx);*/
1242 switch (attr->form) {
1243 case DW_FORM_block:
1244 uvalue = dwarf2_leb128_as_unsigned(ctx);
1245 break;
1246 case DW_FORM_block1:
1247 uvalue = dwarf2_parse_byte(ctx);
1248 break;
1249 case DW_FORM_block2:
1250 uvalue = dwarf2_parse_u2(ctx);
1251 break;
1252 case DW_FORM_block4:
1253 uvalue = dwarf2_parse_u4(ctx);
1254 break;
1255 default:
1256 TRACE("Unhandled attr form at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1257 dwarf2_parse_attr(attr, ctx);
1258 }
1259 if (uvalue) {
1260 unsigned char op = dwarf2_parse_byte(ctx);
1261 --uvalue;
1262 switch (op) {
1263 case DW_OP_plus_uconst:
1264 offset = dwarf2_leb128_as_unsigned(ctx);
1265 break;
1266 default:
1267 TRACE("Unhandled attr op at %s, for %s, op:%u\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr), op);
1268 ctx->data += uvalue;
1269 }
1270 TRACE("found offset:%lu\n", offset);
1271 }
1272 }
1273 break;
1274 case DW_AT_decl_file:
1275 case DW_AT_decl_line:
1276 dwarf2_parse_attr(attr, ctx);
1277 break;
1278 default:
1279 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1280 dwarf2_parse_attr(attr, ctx);
1281 }
1282 }
1283 symt_add_udt_element(module, parent, name, elt_type, offset, size);
1284
1285 if (entry->have_child) {
1286 FIXME("Unsupported children\n");
1287 }
1288
1289 /** set correct data cursor */
1290 dwarf2_check_sibling(ctx, next_sibling);
1291 }
1292
1293 static void dwarf2_parse_udt_members(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx, struct symt_udt* symt)
1294 {
1295 if (entry->have_child) { /** any interest to not have child ? */
1296 ++ctx->level;
1297 while (ctx->data < ctx->end_data) {
1298 dwarf2_abbrev_entry_t* entry = NULL;
1299 unsigned long entry_code;
1300 unsigned long entry_ref = 0;
1301
1302 entry_ref = ctx->data - ctx->data_stream;
1303
1304 entry_code = dwarf2_leb128_as_unsigned(ctx);
1305 TRACE("found entry_code %lu at 0x%lx\n", entry_code, entry_ref);
1306 if (0 == entry_code) {
1307 break ;
1308 }
1309
1310 entry = dwarf2_abbrev_table_find_entry(ctx->abbrev_table, entry_code);
1311 assert( NULL != entry );
1312
1313 switch (entry->tag) {
1314 case DW_TAG_member:
1315 dwarf2_parse_udt_member(module, entry, ctx, symt);
1316 break;
1317 default:
1318 {
1319 dwarf2_abbrev_entry_attr_t* attr;
1320 TRACE("Unhandled Tag type 0x%lx at %s, for %lu\n", entry->tag, dwarf2_debug_ctx(ctx), entry->entry_code);
1321 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1322 dwarf2_parse_attr(attr, ctx);
1323 }
1324 }
1325 break;
1326 }
1327 }
1328 --ctx->level;
1329 }
1330 }
1331
1332 static struct symt_udt* dwarf2_parse_class_type(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
1333 {
1334 struct symt_udt* symt = NULL;
1335 const char* name = NULL;
1336 unsigned size = 0;
1337 dwarf2_abbrev_entry_attr_t* attr = NULL;
1338 unsigned long next_sibling = 0;
1339
1340 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1341
1342 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1343 switch (attr->attribute) {
1344 case DW_AT_sibling:
1345 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1346 break;
1347 case DW_AT_name:
1348 name = dwarf2_parse_attr_as_string(attr, ctx);
1349 TRACE("found name %s\n", name);
1350 break;
1351 case DW_AT_byte_size:
1352 size = dwarf2_parse_byte(ctx);
1353 break;
1354 case DW_AT_decl_file:
1355 case DW_AT_decl_line:
1356 dwarf2_parse_attr(attr, ctx);
1357 break;
1358 default:
1359 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1360 dwarf2_parse_attr(attr, ctx);
1361 }
1362 }
1363 symt = symt_new_udt(module, name, size, UdtClass);
1364 dwarf2_parse_udt_members(module, entry, ctx, symt);
1365
1366 /** set correct data cursor */
1367 dwarf2_check_sibling(ctx, next_sibling);
1368
1369 return symt;
1370 }
1371
1372 static struct symt_udt* dwarf2_parse_struct_type(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
1373 {
1374 struct symt_udt* symt = NULL;
1375 const char* name = NULL;
1376 unsigned size = 0;
1377 dwarf2_abbrev_entry_attr_t* attr = NULL;
1378 unsigned long next_sibling = 0;
1379
1380 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1381
1382 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1383 switch (attr->attribute) {
1384 case DW_AT_sibling:
1385 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1386 break;
1387 case DW_AT_name:
1388 name = dwarf2_parse_attr_as_string(attr, ctx);
1389 TRACE("found name %s\n", name);
1390 break;
1391 case DW_AT_byte_size:
1392 size = dwarf2_parse_byte(ctx);
1393 break;
1394 case DW_AT_decl_file:
1395 case DW_AT_decl_line:
1396 dwarf2_parse_attr(attr, ctx);
1397 break;
1398 default:
1399 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1400 dwarf2_parse_attr(attr, ctx);
1401 }
1402 }
1403 symt = symt_new_udt(module, name, size, UdtStruct);
1404 dwarf2_parse_udt_members(module, entry, ctx, symt);
1405
1406 /** set correct data cursor */
1407 dwarf2_check_sibling(ctx, next_sibling);
1408
1409 return symt;
1410 }
1411
1412 static struct symt_udt* dwarf2_parse_union_type(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
1413 {
1414 struct symt_udt* symt = NULL;
1415 const char* name = NULL;
1416 unsigned size = 0;
1417 dwarf2_abbrev_entry_attr_t* attr = NULL;
1418 unsigned long next_sibling = 0;
1419
1420 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1421
1422 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1423 switch (attr->attribute) {
1424 case DW_AT_sibling:
1425 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1426 break;
1427 case DW_AT_name:
1428 name = dwarf2_parse_attr_as_string(attr, ctx);
1429 TRACE("found name %s\n", name);
1430 break;
1431 case DW_AT_byte_size:
1432 size = dwarf2_parse_byte(ctx);
1433 break;
1434 case DW_AT_decl_file:
1435 case DW_AT_decl_line:
1436 dwarf2_parse_attr(attr, ctx);
1437 break;
1438 default:
1439 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1440 dwarf2_parse_attr(attr, ctx);
1441 }
1442 }
1443 symt = symt_new_udt(module, name, size, UdtUnion);
1444 dwarf2_parse_udt_members(module, entry, ctx, symt);
1445
1446 /** set correct data cursor */
1447 dwarf2_check_sibling(ctx, next_sibling);
1448
1449 return symt;
1450 }
1451
1452 static void dwarf2_parse_enumerator(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx, struct symt_enum* parent)
1453 {
1454 const char* name = NULL;
1455 long value = 0;
1456 dwarf2_abbrev_entry_attr_t* attr = NULL;
1457
1458 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1459
1460 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1461 switch (attr->attribute) {
1462 case DW_AT_name:
1463 name = dwarf2_parse_attr_as_string(attr, ctx);
1464 TRACE("found name %s\n", name);
1465 break;
1466 case DW_AT_const_value:
1467 switch (attr->form) {
1468 case DW_FORM_sdata:
1469 value = dwarf2_leb128_as_signed(ctx);
1470 TRACE("found value %ld\n", value);
1471 break;
1472 case DW_FORM_udata:
1473 value = dwarf2_leb128_as_unsigned(ctx);
1474 TRACE("found value %ld\n", value);
1475 break;
1476 default:
1477 TRACE("Unhandled attr form at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1478 dwarf2_parse_attr(attr, ctx);
1479 }
1480 break;
1481 default:
1482 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1483 dwarf2_parse_attr(attr, ctx);
1484 }
1485 }
1486 symt_add_enum_element(module, parent, name, value);
1487
1488 if (entry->have_child) {
1489 FIXME("Unsupported children\n");
1490 }
1491 }
1492
1493 static struct symt_enum* dwarf2_parse_enumeration_type(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
1494 {
1495 struct symt_enum* symt = NULL;
1496 const char* name = NULL;
1497 unsigned long size = 0;
1498 dwarf2_abbrev_entry_attr_t* attr = NULL;
1499 unsigned long next_sibling = 0;
1500
1501 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1502
1503 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1504 switch (attr->attribute) {
1505 case DW_AT_sibling:
1506 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1507 break;
1508 case DW_AT_name:
1509 name = dwarf2_parse_attr_as_string(attr, ctx);
1510 TRACE("found name %s\n", name);
1511 break;
1512 case DW_AT_byte_size:
1513 size = dwarf2_parse_attr_as_data(attr, ctx);
1514 break;
1515 case DW_AT_decl_file:
1516 case DW_AT_decl_line:
1517 dwarf2_parse_attr(attr, ctx);
1518 break;
1519 default:
1520 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1521 dwarf2_parse_attr(attr, ctx);
1522 }
1523 }
1524 symt = symt_new_enum(module, name);
1525
1526 if (entry->have_child) { /** any interest to not have child ? */
1527 ++ctx->level;
1528 while (ctx->data < ctx->end_data) {
1529 dwarf2_abbrev_entry_t* entry = NULL;
1530 unsigned long entry_code;
1531 unsigned long entry_ref = 0;
1532
1533 entry_ref = ctx->data - ctx->data_stream;
1534
1535 entry_code = dwarf2_leb128_as_unsigned(ctx);
1536 TRACE("found entry_code %lu at 0x%lx\n", entry_code, entry_ref);
1537 if (0 == entry_code) {
1538 break ;
1539 }
1540
1541 entry = dwarf2_abbrev_table_find_entry(ctx->abbrev_table, entry_code);
1542 assert( NULL != entry );
1543
1544 switch (entry->tag) {
1545 case DW_TAG_enumerator:
1546 dwarf2_parse_enumerator(module, entry, ctx, symt);
1547 break;
1548 default:
1549 {
1550 dwarf2_abbrev_entry_attr_t* attr;
1551 TRACE("Unhandled Tag type 0x%lx at %s, for %lu\n", entry->tag, dwarf2_debug_ctx(ctx), entry->entry_code);
1552 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1553 dwarf2_parse_attr(attr, ctx);
1554 }
1555 }
1556 break;
1557 }
1558 }
1559 --ctx->level;
1560 }
1561
1562 /** set correct data cursor */
1563 dwarf2_check_sibling(ctx, next_sibling);
1564
1565 return symt;
1566 }
1567
1568 static void dwarf2_parse_variable(struct module* module,
1569 dwarf2_abbrev_entry_t* entry,
1570 dwarf2_parse_context_t* ctx)
1571 {
1572 struct symt* var_type = NULL;
1573 dwarf2_abbrev_entry_attr_t* attr = NULL;
1574 const char* name = NULL;
1575 unsigned long next_sibling = 0;
1576
1577 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1578
1579 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1580 switch (attr->attribute) {
1581 case DW_AT_sibling:
1582 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1583 break;
1584 case DW_AT_type:
1585 {
1586 unsigned long ref = dwarf2_parse_attr_as_ref(attr, ctx);
1587 var_type = dwarf2_find_symt_by_ref(module, ref);
1588 }
1589 break;
1590 case DW_AT_name:
1591 name = dwarf2_parse_attr_as_string(attr, ctx);
1592 TRACE("found name %s\n", name);
1593 break;
1594 case DW_AT_decl_file:
1595 case DW_AT_decl_line:
1596 dwarf2_parse_attr(attr, ctx);
1597 break;
1598 default:
1599 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1600 dwarf2_parse_attr(attr, ctx);
1601 }
1602 }
1603
1604 if (entry->have_child) {
1605 FIXME("Unsupported children\n");
1606 }
1607
1608 /** set correct data cursor */
1609 dwarf2_check_sibling(ctx, next_sibling);
1610 }
1611
1612 static void dwarf2_parse_subprogram_parameter(struct module* module,
1613 dwarf2_abbrev_entry_t* entry,
1614 dwarf2_parse_context_t* ctx,
1615 struct symt_function_signature* sig_type,
1616 struct symt_function* func_type)
1617 {
1618 struct symt* param_type = NULL;
1619 const char* name = NULL;
1620 dwarf2_abbrev_entry_attr_t* attr = NULL;
1621 unsigned long next_sibling = 0;
1622
1623 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1624
1625 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1626 switch (attr->attribute) {
1627 case DW_AT_sibling:
1628 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1629 break;
1630 case DW_AT_type:
1631 {
1632 unsigned long ref = dwarf2_parse_attr_as_ref(attr, ctx);
1633 param_type = dwarf2_find_symt_by_ref(module, ref);
1634 }
1635 break;
1636 case DW_AT_name:
1637 name = dwarf2_parse_attr_as_string(attr, ctx);
1638 TRACE("found name %s\n", name);
1639 break;
1640 case DW_AT_decl_file:
1641 case DW_AT_decl_line:
1642 dwarf2_parse_attr(attr, ctx);
1643 break;
1644 case DW_AT_location:
1645 dwarf2_parse_attr(attr, ctx);
1646 break;
1647 default:
1648 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1649 dwarf2_parse_attr(attr, ctx);
1650 }
1651 }
1652 if (NULL != sig_type) {
1653 symt_add_function_signature_parameter(module, sig_type, param_type);
1654 }
1655
1656 if (entry->have_child) {
1657 FIXME("Unsupported children\n");
1658 }
1659
1660 /** set correct data cursor */
1661 dwarf2_check_sibling(ctx, next_sibling);
1662 }
1663
1664 static void dwarf2_parse_inlined_subroutine(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
1665 {
1666 const char* name = NULL;
1667 unsigned long addr = 0;
1668 unsigned long low_pc = 0;
1669 unsigned long high_pc = 0;
1670 unsigned size = 0;
1671 dwarf2_abbrev_entry_attr_t* attr = NULL;
1672 unsigned long next_sibling = 0;
1673
1674 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1675
1676 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1677 switch (attr->attribute) {
1678 case DW_AT_sibling:
1679 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1680 break;
1681 case DW_AT_low_pc:
1682 low_pc = dwarf2_parse_attr_as_addr(attr, ctx);
1683 addr = module->module.BaseOfImage + low_pc;
1684 break;
1685 case DW_AT_high_pc:
1686 high_pc = dwarf2_parse_attr_as_addr(attr, ctx);
1687 size = high_pc - low_pc;
1688 break;
1689 case DW_AT_name:
1690 name = dwarf2_parse_attr_as_string(attr, ctx);
1691 TRACE("found name %s\n", name);
1692 break;
1693 case DW_AT_decl_file:
1694 case DW_AT_decl_line:
1695 dwarf2_parse_attr(attr, ctx);
1696 break;
1697 default:
1698 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1699 dwarf2_parse_attr(attr, ctx);
1700 }
1701 }
1702
1703 if (entry->have_child) { /** any interest to not have child ? */
1704 ++ctx->level;
1705 while (ctx->data < ctx->end_data) {
1706 dwarf2_abbrev_entry_t* entry = NULL;
1707 unsigned long entry_code;
1708 unsigned long entry_ref = 0;
1709
1710 entry_ref = ctx->data - ctx->data_stream;
1711
1712 entry_code = dwarf2_leb128_as_unsigned(ctx);
1713 TRACE("found entry_code %lu at 0x%lx\n", entry_code, entry_ref);
1714 if (0 == entry_code) {
1715 break ;
1716 }
1717
1718 entry = dwarf2_abbrev_table_find_entry(ctx->abbrev_table, entry_code);
1719 assert( NULL != entry );
1720
1721 switch (entry->tag) {
1722 case DW_TAG_formal_parameter:
1723 dwarf2_parse_subprogram_parameter(module, entry, ctx, NULL, NULL);
1724 break;
1725 case DW_TAG_variable:
1726 dwarf2_parse_variable(module, entry, ctx);
1727 break;
1728 case DW_TAG_label:
1729 default:
1730 {
1731 dwarf2_abbrev_entry_attr_t* attr;
1732 TRACE("Unhandled Tag type 0x%lx at %s, for %lu\n", entry->tag, dwarf2_debug_ctx(ctx), entry->entry_code);
1733 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1734 dwarf2_parse_attr(attr, ctx);
1735 }
1736 }
1737 break;
1738 }
1739 }
1740 --ctx->level;
1741 }
1742
1743 /** set correct data cursor */
1744 dwarf2_check_sibling(ctx, next_sibling);
1745 }
1746
1747
1748 static void dwarf2_parse_subprogram_block(struct module* module,
1749 dwarf2_abbrev_entry_t* entry,
1750 dwarf2_parse_context_t* ctx,
1751 struct symt_function_signature* sig_type,
1752 struct symt_function* func_type)
1753 {
1754 dwarf2_abbrev_entry_attr_t* attr = NULL;
1755 const char* name = NULL;
1756 unsigned long next_sibling = 0;
1757
1758 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1759
1760 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1761 switch (attr->attribute) {
1762 case DW_AT_sibling:
1763 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1764 break;
1765 case DW_AT_name:
1766 name = dwarf2_parse_attr_as_string(attr, ctx);
1767 TRACE("found name %s\n", name);
1768 break;
1769 case DW_AT_decl_file:
1770 case DW_AT_decl_line:
1771 dwarf2_parse_attr(attr, ctx);
1772 break;
1773 case DW_AT_ranges: /** what to do ? */
1774 dwarf2_parse_attr(attr, ctx);
1775 break;
1776 default:
1777 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1778 dwarf2_parse_attr(attr, ctx);
1779 }
1780 }
1781
1782 if (entry->have_child) { /** any interest to not have child ? */
1783 ++ctx->level;
1784 while (ctx->data < ctx->end_data) {
1785 dwarf2_abbrev_entry_t* entry = NULL;
1786 unsigned long entry_code;
1787 unsigned long entry_ref = 0;
1788
1789 entry_ref = ctx->data - ctx->data_stream;
1790
1791 entry_code = dwarf2_leb128_as_unsigned(ctx);
1792 TRACE("found entry_code %lu at 0x%lx\n", entry_code, entry_ref);
1793 if (0 == entry_code) {
1794 break ;
1795 }
1796
1797 entry = dwarf2_abbrev_table_find_entry(ctx->abbrev_table, entry_code);
1798 assert( NULL != entry );
1799
1800 switch (entry->tag) {
1801 case DW_TAG_inlined_subroutine:
1802 dwarf2_parse_inlined_subroutine(module, entry, ctx);
1803 break;
1804 case DW_TAG_variable:
1805 dwarf2_parse_variable(module, entry, ctx);
1806 break;
1807 case DW_TAG_label:
1808 default:
1809 {
1810 dwarf2_abbrev_entry_attr_t* attr;
1811 TRACE("Unhandled Tag type 0x%lx at %s, for %lu\n", entry->tag, dwarf2_debug_ctx(ctx), entry->entry_code);
1812 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1813 dwarf2_parse_attr(attr, ctx);
1814 }
1815 }
1816 break;
1817 }
1818 }
1819 --ctx->level;
1820 }
1821
1822 /** set correct data cursor */
1823 dwarf2_check_sibling(ctx, next_sibling);
1824 }
1825
1826 static void dwarf2_parse_subprogram_content(struct module* module,
1827 dwarf2_abbrev_entry_t* entry,
1828 dwarf2_parse_context_t* ctx,
1829 struct symt_function_signature* sig_type,
1830 struct symt_function* func_type)
1831 {
1832 if (entry->have_child) { /** any interest to not have child ? */
1833 ++ctx->level;
1834 while (ctx->data < ctx->end_data) {
1835 dwarf2_abbrev_entry_t* entry = NULL;
1836 unsigned long entry_code;
1837 unsigned long entry_ref = 0;
1838
1839 entry_ref = ctx->data - ctx->data_stream;
1840
1841 entry_code = dwarf2_leb128_as_unsigned(ctx);
1842 TRACE("found entry_code %lu at 0x%lx\n", entry_code, entry_ref);
1843 if (0 == entry_code) {
1844 break ;
1845 }
1846
1847 entry = dwarf2_abbrev_table_find_entry(ctx->abbrev_table, entry_code);
1848 assert( NULL != entry );
1849
1850 switch (entry->tag) {
1851 case DW_TAG_formal_parameter:
1852 dwarf2_parse_subprogram_parameter(module, entry, ctx, sig_type, func_type);
1853 break;
1854 case DW_TAG_lexical_block:
1855 dwarf2_parse_subprogram_block(module, entry, ctx, sig_type, func_type);
1856 break;
1857 case DW_TAG_variable:
1858 dwarf2_parse_variable(module, entry, ctx);
1859 break;
1860 case DW_TAG_label:
1861 default:
1862 {
1863 dwarf2_abbrev_entry_attr_t* attr;
1864 TRACE("Unhandled Tag type 0x%lx at %s, for %lu\n", entry->tag, dwarf2_debug_ctx(ctx), entry->entry_code);
1865 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1866 dwarf2_parse_attr(attr, ctx);
1867 }
1868 }
1869 break;
1870 }
1871 }
1872 --ctx->level;
1873 }
1874 }
1875
1876 static struct symt_function* dwarf2_parse_subprogram(struct module* module, dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx, struct symt_compiland* compiland)
1877 {
1878 struct symt_function* func_type = NULL;
1879 const char* name = NULL;
1880 struct symt* ret_type = NULL;
1881 struct symt_function_signature* sig_type = NULL;
1882 unsigned long addr = 0;
1883 unsigned long low_pc = 0;
1884 unsigned long high_pc = 0;
1885 unsigned size = 0;
1886 unsigned char is_decl = 0;
1887 unsigned char inl_flags = 0;
1888 unsigned char decl_file = 0;
1889 unsigned char decl_line = 0;
1890 dwarf2_abbrev_entry_attr_t* attr = NULL;
1891 unsigned long next_sibling = 0;
1892 enum CV_call_e call_conv = CV_CALL_FAR_C; /* FIXME: assuming C source code */
1893 unsigned cc;
1894
1895 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), entry->entry_code);
1896
1897 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
1898 switch (attr->attribute) {
1899 case DW_AT_sibling:
1900 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
1901 break;
1902 case DW_AT_low_pc:
1903 low_pc = dwarf2_parse_attr_as_addr(attr, ctx);
1904 addr = module->module.BaseOfImage + low_pc;
1905 break;
1906 case DW_AT_high_pc:
1907 high_pc = dwarf2_parse_attr_as_addr(attr, ctx);
1908 size = high_pc - low_pc;
1909 break;
1910 case DW_AT_name:
1911 name = dwarf2_parse_attr_as_string(attr, ctx);
1912 TRACE("found name %s\n", name);
1913 break;
1914 case DW_AT_type:
1915 {
1916 unsigned long ref = dwarf2_parse_attr_as_ref(attr, ctx);
1917 ret_type = dwarf2_find_symt_by_ref(module, ref);
1918 }
1919 break;
1920 case DW_AT_declaration:
1921 is_decl = dwarf2_parse_byte(ctx);
1922 break;
1923 case DW_AT_inline:
1924 inl_flags = dwarf2_parse_byte(ctx);
1925 break;
1926 case DW_AT_calling_convention:
1927 switch (cc = dwarf2_parse_byte(ctx))
1928 {
1929 case DW_CC_normal: break;
1930 case DW_CC_nocall: call_conv = -1;
1931 default: FIXME("Unsupported calling convention %d\n", cc);
1932 }
1933 break;
1934 /* not work yet, need parsing .debug_line and using Compil Unit stmt_list
1935 case DW_AT_decl_file:
1936 decl_file = dwarf2_parse_byte(ctx);
1937 break;
1938 case DW_AT_decl_line:
1939 decl_line = dwarf2_parse_byte(ctx);
1940 break;
1941 */
1942 default:
1943 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
1944 dwarf2_parse_attr(attr, ctx);
1945 }
1946 }
1947 sig_type = symt_new_function_signature(module, ret_type, call_conv);
1948 if (!is_decl) {
1949 func_type = symt_new_function(module, compiland, name, addr, size, &sig_type->symt);
1950 if (low_pc && high_pc) {
1951 symt_add_function_point(module, func_type, SymTagFuncDebugStart, low_pc, NULL);
1952 symt_add_function_point(module, func_type, SymTagFuncDebugEnd, high_pc, NULL);
1953 }
1954 if (decl_file && decl_line) {
1955 symt_add_func_line(module, func_type, decl_file, decl_line, low_pc);
1956 }
1957 }
1958 dwarf2_parse_subprogram_content(module, entry, ctx, sig_type, func_type);
1959 symt_normalize_function(module, func_type);
1960
1961 /** set correct data cursor */
1962 dwarf2_check_sibling(ctx, next_sibling);
1963
1964 return func_type;
1965 }
1966
1967 static void dwarf2_parse_compiland_content(struct module* module, const dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx, struct symt_compiland* compiland)
1968 {
1969 if (entry->have_child) { /** any interest to not have child ? */
1970 ++ctx->level;
1971 while (ctx->data < ctx->end_data) {
1972 dwarf2_abbrev_entry_t* entry = NULL;
1973 unsigned long entry_code;
1974 unsigned long entry_ref = 0;
1975
1976 entry_ref = ctx->data - ctx->data_stream;
1977
1978 entry_code = dwarf2_leb128_as_unsigned(ctx);
1979 TRACE("found entry_code %lu at 0x%lx\n", entry_code, entry_ref);
1980 if (0 == entry_code) {
1981 break ;
1982 }
1983
1984 entry = dwarf2_abbrev_table_find_entry(ctx->abbrev_table, entry_code);
1985 assert( NULL != entry );
1986
1987 switch (entry->tag) {
1988 case DW_TAG_typedef:
1989 {
1990 struct symt_typedef* symt = dwarf2_parse_typedef(module, entry, ctx);
1991 dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
1992 }
1993 break;
1994 case DW_TAG_base_type:
1995 {
1996 struct symt_basic* symt = dwarf2_parse_base_type(module, entry, ctx);
1997 dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
1998 }
1999 break;
2000 case DW_TAG_pointer_type:
2001 {
2002 struct symt_pointer* symt = dwarf2_parse_pointer_type(module, entry, ctx);
2003 dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
2004 }
2005 break;
2006 case DW_TAG_class_type:
2007 {
2008 struct symt_udt* symt = dwarf2_parse_class_type(module, entry, ctx);
2009 if (NULL != symt) dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
2010 }
2011 break;
2012 case DW_TAG_structure_type:
2013 {
2014 struct symt_udt* symt = dwarf2_parse_struct_type(module, entry, ctx);
2015 if (NULL != symt) dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
2016 }
2017 break;
2018 case DW_TAG_union_type:
2019 {
2020 struct symt_udt* symt = dwarf2_parse_union_type(module, entry, ctx);
2021 if (NULL != symt) dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
2022 }
2023 break;
2024 case DW_TAG_array_type:
2025 {
2026 struct symt_array* symt = dwarf2_parse_array_type(module, entry, ctx);
2027 dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
2028 }
2029 break;
2030 case DW_TAG_const_type:
2031 {
2032 struct symt_typedef* symt = dwarf2_parse_const_type(module, entry, ctx);
2033 dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
2034 }
2035 break;
2036 case DW_TAG_reference_type:
2037 {
2038 struct symt_typedef* symt = dwarf2_parse_reference_type(module, entry, ctx);
2039 dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
2040 }
2041 break;
2042 case DW_TAG_enumeration_type:
2043 {
2044 struct symt_enum* symt = dwarf2_parse_enumeration_type(module, entry, ctx);
2045 dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
2046 }
2047 break;
2048 case DW_TAG_subprogram:
2049 {
2050 struct symt_function* symt = dwarf2_parse_subprogram(module, entry, ctx, compiland);
2051 if (NULL != symt) dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
2052 }
2053 break;
2054
2055 default:
2056 {
2057 dwarf2_abbrev_entry_attr_t* attr;
2058 TRACE("Unhandled Tag type 0x%lx at %s, for %lu\n", entry->tag, dwarf2_debug_ctx(ctx), entry->entry_code);
2059 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
2060 dwarf2_parse_attr(attr, ctx);
2061 }
2062 }
2063 break;
2064 }
2065 }
2066 --ctx->level;
2067 }
2068 }
2069
2070 static struct symt_compiland* dwarf2_parse_compiland(struct module* module, const dwarf2_abbrev_entry_t* entry, dwarf2_parse_context_t* ctx)
2071 {
2072 struct symt_compiland* compiland = NULL;
2073 const char* name = NULL;
2074 unsigned long next_sibling = 0;
2075 dwarf2_abbrev_entry_attr_t* attr = NULL;
2076
2077 TRACE("beginning at Ox%x, for %lu\n", ctx->data - ctx->start_data, entry->entry_code);
2078
2079 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
2080 switch (attr->attribute) {
2081 case DW_AT_sibling:
2082 next_sibling = dwarf2_parse_attr_as_ref(attr, ctx);
2083 break;
2084 case DW_AT_name:
2085 name = dwarf2_parse_attr_as_string(attr, ctx);
2086 TRACE("found name %s\n", name);
2087 break;
2088 default:
2089 TRACE("Unhandled attr at %s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_attr(attr));
2090 dwarf2_parse_attr(attr, ctx);
2091 }
2092 }
2093 compiland = symt_new_compiland(module, name);
2094 dwarf2_parse_compiland_content(module, entry, ctx, compiland);
2095
2096 dwarf2_check_sibling(ctx, next_sibling);
2097
2098 return compiland;
2099 }
2100
2101 BOOL dwarf2_parse(struct module* module, unsigned long load_offset,
2102 const unsigned char* debug, unsigned int debug_size,
2103 const unsigned char* abbrev, unsigned int abbrev_size,
2104 const unsigned char* str, unsigned int str_sz)
2105 {
2106 const unsigned char* comp_unit_cursor = debug;
2107 const unsigned char* end_debug = debug + debug_size;
2108 BOOL bRet = TRUE;
2109
2110 while (comp_unit_cursor < end_debug) {
2111 dwarf2_abbrev_table_t* abbrev_table;
2112 const dwarf2_comp_unit_stream_t* comp_unit_stream;
2113 dwarf2_comp_unit_t comp_unit;
2114 dwarf2_parse_context_t ctx;
2115 dwarf2_parse_context_t abbrev_ctx;
2116 struct symt_compiland* compiland = NULL;
2117
2118 comp_unit_stream = (const dwarf2_comp_unit_stream_t*) comp_unit_cursor;
2119
2120 comp_unit.length = *(unsigned long*) comp_unit_stream->length;
2121 comp_unit.version = *(unsigned short*) comp_unit_stream->version;
2122 comp_unit.abbrev_offset = *(unsigned long*) comp_unit_stream->abbrev_offset;
2123 comp_unit.word_size = *(unsigned char*) comp_unit_stream->word_size;
2124
2125 TRACE("Compilation Unit Herder found at 0x%x:\n", comp_unit_cursor - debug);
2126 TRACE("- length: %lu\n", comp_unit.length);
2127 TRACE("- version: %u\n", comp_unit.version);
2128 TRACE("- abbrev_offset: %lu\n", comp_unit.abbrev_offset);
2129 TRACE("- word_size: %u\n", comp_unit.word_size);
2130
2131 ctx.data_stream = debug;
2132 ctx.data = ctx.start_data = comp_unit_cursor + sizeof(dwarf2_comp_unit_stream_t);
2133 ctx.offset = comp_unit_cursor - debug;
2134 ctx.word_size = comp_unit.word_size;
2135 ctx.str_section = str;
2136 ctx.level = 0;
2137
2138 comp_unit_cursor += comp_unit.length + sizeof(unsigned);
2139 ctx.end_data = comp_unit_cursor;
2140
2141 if (2 != comp_unit.version) {
2142 WARN("%u DWARF version unsupported. Wine dbghelp only support DWARF 2.\n", comp_unit.version);
2143 continue ;
2144 }
2145
2146 abbrev_ctx.abbrev_table = NULL;
2147 abbrev_ctx.data_stream = abbrev;
2148 abbrev_ctx.data = abbrev_ctx.start_data = abbrev + comp_unit.abbrev_offset;
2149 abbrev_ctx.end_data = abbrev + abbrev_size;
2150 abbrev_ctx.offset = comp_unit.abbrev_offset;
2151 abbrev_ctx.str_section = str;
2152 abbrev_table = dwarf2_parse_abbrev_set(&abbrev_ctx);
2153
2154 ctx.abbrev_table = abbrev_table;
2155
2156 while (ctx.data < ctx.end_data) {
2157 const dwarf2_abbrev_entry_t* entry = NULL;
2158 unsigned long entry_code;
2159 unsigned long entry_ref = 0;
2160
2161 entry_ref = ctx.data - ctx.data_stream;
2162
2163 entry_code = dwarf2_leb128_as_unsigned(&ctx);
2164 TRACE("found entry_code %lu at 0x%lx\n", entry_code, entry_ref);
2165 if (0 == entry_code) {
2166 continue ;
2167 }
2168 entry = dwarf2_abbrev_table_find_entry(abbrev_table, entry_code);
2169 if (NULL == entry) {
2170 WARN("Cannot find abbrev entry for %lu at 0x%lx\n", entry_code, entry_ref);
2171 dwarf2_abbrev_table_free(abbrev_table);
2172 return FALSE;
2173 }
2174
2175 switch (entry->tag) {
2176 case DW_TAG_compile_unit:
2177 {
2178 struct symt_compiland* symt = dwarf2_parse_compiland(module, entry, &ctx);
2179 dwarf2_add_symt_ref(module, entry_ref, &symt->symt);
2180 compiland = symt;
2181 }
2182 break;
2183 default:
2184 {
2185 dwarf2_abbrev_entry_attr_t* attr;
2186 TRACE("Unhandled Tag type 0x%lx at %s, for %lu\n", entry->tag, dwarf2_debug_ctx(&ctx), entry->entry_code);
2187 for (attr = entry->attrs; NULL != attr; attr = attr->next) {
2188 dwarf2_parse_attr(attr, &ctx);
2189 }
2190 }
2191 break;
2192 }
2193 }
2194 dwarf2_abbrev_table_free(abbrev_table);
2195 }
2196 return bRet;
2197 }
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