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[amd64] Remove the callee saved registers from MonoLMF, save/restore them normally...
[mono-project.git] / mono / mini / dwarfwriter.c
blob9f68a62683e94c6033c25e4995891bf282e2fb5d
1 /*
2 * dwarfwriter.c: Creation of DWARF debug information
3 *
4 * Author:
5 * Zoltan Varga (vargaz@gmail.com)
6 *
7 * (C) 2008-2009 Novell, Inc.
8 */
9
10 #include "config.h"
11
12 #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT)
13 #include "dwarfwriter.h"
14
15 #include <sys/types.h>
16 #include <ctype.h>
17 #include <string.h>
18 #ifdef HAVE_STDINT_H
19 #include <stdint.h>
20 #endif
21
22 #include <mono/metadata/mono-endian.h>
23 #include <mono/metadata/debug-mono-symfile.h>
24 #include <mono/utils/mono-compiler.h>
25
26 #ifndef HOST_WIN32
27 #include <mono/utils/freebsd-elf32.h>
28 #include <mono/utils/freebsd-elf64.h>
29 #endif
30
31 #include <mono/utils/freebsd-dwarf.h>
32
33 typedef struct {
34 MonoMethod *method;
35 char *start_symbol, *end_symbol;
36 guint8 *code;
37 guint32 code_size;
38 } MethodLineNumberInfo;
39
40 struct _MonoDwarfWriter
41 {
42 MonoImageWriter *w;
43 GHashTable *class_to_die, *class_to_vtype_die, *class_to_pointer_die;
44 GHashTable *class_to_reference_die;
45 int fde_index, tdie_index, line_number_file_index, line_number_dir_index;
46 GHashTable *file_to_index, *index_to_file, *dir_to_index;
47 FILE *il_file;
48 int il_file_line_index, loclist_index;
49 GSList *cie_program;
50 FILE *fp;
51 const char *temp_prefix;
52 gboolean emit_line, appending, collect_line_info;
53 GSList *line_info;
54 int cur_file_index;
55 };
56
57 static void
58 emit_line_number_info (MonoDwarfWriter *w, MonoMethod *method,
59 char *start_symbol, char *end_symbol,
60 guint8 *code, guint32 code_size,
61 MonoDebugMethodJitInfo *debug_info);
62
63 /*
64 * mono_dwarf_writer_create:
65 *
66 * Create a DWARF writer object. WRITER is the underlying image writer this
67 * writer will emit to. IL_FILE is the file where IL code will be dumped to for
68 * methods which have no line number info. It can be NULL.
69 * If APPENDING is TRUE, the output file will be in assembleable state after each
70 * call to the _emit_ functions. This is used for XDEBUG. If APPENDING is FALSE,
71 * a separate mono_dwarf_writer_close () call is needed to finish the emission of
72 * debug information.
73 */
74 MonoDwarfWriter*
75 mono_dwarf_writer_create (MonoImageWriter *writer, FILE *il_file, int il_file_start_line, gboolean appending, gboolean emit_line_numbers)
76 {
77 MonoDwarfWriter *w = g_new0 (MonoDwarfWriter, 1);
78
79 /*
80 * The appending flag is needed because we use subsections to order things in
81 * the debug info, and:
82 * - apple's assembler doesn't support them
83 * - the binary writer has problems with subsections+alignment
84 * So instead of subsections, we use the _close () function in AOT mode,
85 * which writes out things in order.
86 */
87
88 w->w = writer;
89 w->il_file = il_file;
90 w->il_file_line_index = il_file_start_line;
91 w->appending = appending;
92
93 if (appending)
94 g_assert (img_writer_subsections_supported (w->w));
95
96 w->emit_line = TRUE;
97
98 if (appending) {
99 if (!img_writer_subsections_supported (w->w))
100 /* Can't emit line number info without subsections */
101 w->emit_line = FALSE;
102 } else {
103 /* Collect line number info and emit it at once */
104 w->collect_line_info = TRUE;
105 }
106
107 if (!emit_line_numbers) {
108 w->emit_line = FALSE;
109 w->collect_line_info = FALSE;
110 }
111
112 w->fp = img_writer_get_fp (w->w);
113 w->temp_prefix = img_writer_get_temp_label_prefix (w->w);
114
115 w->class_to_die = g_hash_table_new (NULL, NULL);
116 w->class_to_vtype_die = g_hash_table_new (NULL, NULL);
117 w->class_to_pointer_die = g_hash_table_new (NULL, NULL);
118 w->class_to_reference_die = g_hash_table_new (NULL, NULL);
119 w->cur_file_index = -1;
120
121 return w;
122 }
123
124 void
125 mono_dwarf_writer_destroy (MonoDwarfWriter *w)
126 {
127 g_free (w);
128 }
129
130 int
131 mono_dwarf_writer_get_il_file_line_index (MonoDwarfWriter *w)
132 {
133 return w->il_file_line_index;
134 }
135
136 /* Wrappers around the image writer functions */
137
138 static inline void
139 emit_section_change (MonoDwarfWriter *w, const char *section_name, int subsection_index)
140 {
141 img_writer_emit_section_change (w->w, section_name, subsection_index);
142 }
143
144 static inline void
145 emit_push_section (MonoDwarfWriter *w, const char *section_name, int subsection)
146 {
147 img_writer_emit_push_section (w->w, section_name, subsection);
148 }
149
150 static inline void
151 emit_pop_section (MonoDwarfWriter *w)
152 {
153 img_writer_emit_pop_section (w->w);
154 }
155
156 static inline void
157 emit_local_symbol (MonoDwarfWriter *w, const char *name, const char *end_label, gboolean func)
158 {
159 img_writer_emit_local_symbol (w->w, name, end_label, func);
160 }
161
162 static inline void
163 emit_label (MonoDwarfWriter *w, const char *name)
164 {
165 img_writer_emit_label (w->w, name);
166 }
167
168 static inline void
169 emit_bytes (MonoDwarfWriter *w, const guint8* buf, int size)
170 {
171 img_writer_emit_bytes (w->w, buf, size);
172 }
173
174 static inline void
175 emit_string (MonoDwarfWriter *w, const char *value)
176 {
177 img_writer_emit_string (w->w, value);
178 }
179
180 static inline void
181 emit_line (MonoDwarfWriter *w)
182 {
183 img_writer_emit_line (w->w);
184 }
185
186 static inline void
187 emit_alignment (MonoDwarfWriter *w, int size)
188 {
189 img_writer_emit_alignment (w->w, size);
190 }
191
192 static inline void
193 emit_pointer_unaligned (MonoDwarfWriter *w, const char *target)
194 {
195 img_writer_emit_pointer_unaligned (w->w, target);
196 }
197
198 static inline void
199 emit_pointer (MonoDwarfWriter *w, const char *target)
200 {
201 img_writer_emit_pointer (w->w, target);
202 }
203
204 static inline void
205 emit_int16 (MonoDwarfWriter *w, int value)
206 {
207 img_writer_emit_int16 (w->w, value);
208 }
209
210 static inline void
211 emit_int32 (MonoDwarfWriter *w, int value)
212 {
213 img_writer_emit_int32 (w->w, value);
214 }
215
216 static inline void
217 emit_symbol_diff (MonoDwarfWriter *w, const char *end, const char* start, int offset)
218 {
219 img_writer_emit_symbol_diff (w->w, end, start, offset);
220 }
221
222 static inline void
223 emit_zero_bytes (MonoDwarfWriter *w, int num)
224 {
225 img_writer_emit_zero_bytes (w->w, num);
226 }
227
228 static inline void
229 emit_byte (MonoDwarfWriter *w, guint8 val)
230 {
231 img_writer_emit_byte (w->w, val);
232 }
233
234 static G_GNUC_UNUSED void
235 emit_uleb128 (MonoDwarfWriter *w, guint32 value)
236 {
237 do {
238 guint8 b = value & 0x7f;
239 value >>= 7;
240 if (value != 0) /* more bytes to come */
241 b |= 0x80;
242 emit_byte (w, b);
243 } while (value);
244 }
245
246 static G_GNUC_UNUSED void
247 emit_sleb128 (MonoDwarfWriter *w, gint64 value)
248 {
249 gboolean more = 1;
250 gboolean negative = (value < 0);
251 guint32 size = 64;
252 guint8 byte;
253
254 while (more) {
255 byte = value & 0x7f;
256 value >>= 7;
257 /* the following is unnecessary if the
258 * implementation of >>= uses an arithmetic rather
259 * than logical shift for a signed left operand
260 */
261 if (negative)
262 /* sign extend */
263 value |= - ((gint64)1 <<(size - 7));
264 /* sign bit of byte is second high order bit (0x40) */
265 if ((value == 0 && !(byte & 0x40)) ||
266 (value == -1 && (byte & 0x40)))
267 more = 0;
268 else
269 byte |= 0x80;
270 emit_byte (w, byte);
271 }
272 }
273
274 static G_GNUC_UNUSED void
275 encode_uleb128 (guint32 value, guint8 *buf, guint8 **endbuf)
276 {
277 guint8 *p = buf;
278
279 do {
280 guint8 b = value & 0x7f;
281 value >>= 7;
282 if (value != 0) /* more bytes to come */
283 b |= 0x80;
284 *p ++ = b;
285 } while (value);
286
287 *endbuf = p;
288 }
289
290 static G_GNUC_UNUSED void
291 encode_sleb128 (gint32 value, guint8 *buf, guint8 **endbuf)
292 {
293 gboolean more = 1;
294 gboolean negative = (value < 0);
295 guint32 size = 32;
296 guint8 byte;
297 guint8 *p = buf;
298
299 while (more) {
300 byte = value & 0x7f;
301 value >>= 7;
302 /* the following is unnecessary if the
303 * implementation of >>= uses an arithmetic rather
304 * than logical shift for a signed left operand
305 */
306 if (negative)
307 /* sign extend */
308 value |= - (1 <<(size - 7));
309 /* sign bit of byte is second high order bit (0x40) */
310 if ((value == 0 && !(byte & 0x40)) ||
311 (value == -1 && (byte & 0x40)))
312 more = 0;
313 else
314 byte |= 0x80;
315 *p ++= byte;
316 }
317
318 *endbuf = p;
319 }
320
321 static void
322 emit_dwarf_abbrev (MonoDwarfWriter *w, int code, int tag, gboolean has_child,
323 int *attrs, int attrs_len)
324 {
325 int i;
326
327 emit_uleb128 (w, code);
328 emit_uleb128 (w, tag);
329 emit_byte (w, has_child);
330
331 for (i = 0; i < attrs_len; i++)
332 emit_uleb128 (w, attrs [i]);
333 emit_uleb128 (w, 0);
334 emit_uleb128 (w, 0);
335 }
336
337 static void
338 emit_cie (MonoDwarfWriter *w)
339 {
340 emit_section_change (w, ".debug_frame", 0);
341
342 emit_alignment (w, 8);
343
344 /* Emit a CIE */
345 emit_symbol_diff (w, ".Lcie0_end", ".Lcie0_start", 0); /* length */
346 emit_label (w, ".Lcie0_start");
347 emit_int32 (w, 0xffffffff); /* CIE id */
348 emit_byte (w, 3); /* version */
349 emit_string (w, ""); /* augmention */
350 emit_sleb128 (w, 1); /* code alignment factor */
351 emit_sleb128 (w, mono_unwind_get_dwarf_data_align ()); /* data alignment factor */
352 emit_uleb128 (w, mono_unwind_get_dwarf_pc_reg ());
353
354 w->cie_program = w->cie_program;
355 if (w->cie_program) {
356 guint32 uw_info_len;
357 guint8 *uw_info = mono_unwind_ops_encode (w->cie_program, &uw_info_len);
358 emit_bytes (w, uw_info, uw_info_len);
359 g_free (uw_info);
360 }
361
362 emit_alignment (w, sizeof (gpointer));
363 emit_label (w, ".Lcie0_end");
364 }
365
366 static void
367 emit_pointer_value (MonoDwarfWriter *w, gpointer ptr)
368 {
369 gssize val = (gssize)ptr;
370 emit_bytes (w, (guint8*)&val, sizeof (gpointer));
371 }
372
373 static void
374 emit_fde (MonoDwarfWriter *w, int fde_index, char *start_symbol, char *end_symbol,
375 guint8 *code, guint32 code_size, GSList *unwind_ops, gboolean use_cie)
376 {
377 char symbol1 [128];
378 char symbol2 [128];
379 GSList *l;
380 guint8 *uw_info;
381 guint32 uw_info_len;
382
383 emit_section_change (w, ".debug_frame", 0);
384
385 sprintf (symbol1, ".Lfde%d_start", fde_index);
386 sprintf (symbol2, ".Lfde%d_end", fde_index);
387 emit_symbol_diff (w, symbol2, symbol1, 0); /* length */
388 emit_label (w, symbol1);
389 emit_int32 (w, 0); /* CIE_pointer */
390 if (start_symbol) {
391 emit_pointer (w, start_symbol); /* initial_location */
392 if (end_symbol)
393 emit_symbol_diff (w, end_symbol, start_symbol, 0); /* address_range */
394 else {
395 g_assert (code_size);
396 emit_int32 (w, code_size);
397 }
398 } else {
399 emit_pointer_value (w, code);
400 emit_int32 (w, code_size);
401 }
402 #if SIZEOF_VOID_P == 8
403 /* Upper 32 bits of code size */
404 emit_int32 (w, 0);
405 #endif
406
407 l = unwind_ops;
408 if (w->cie_program) {
409 // FIXME: Check that the ops really begin with the CIE program */
410 int i;
411
412 for (i = 0; i < g_slist_length (w->cie_program); ++i)
413 if (l)
414 l = l->next;
415 }
416
417 /* Convert the list of MonoUnwindOps to the format used by DWARF */
418 uw_info = mono_unwind_ops_encode (l, &uw_info_len);
419 emit_bytes (w, uw_info, uw_info_len);
420 g_free (uw_info);
421
422 emit_alignment (w, sizeof (mgreg_t));
423 emit_label (w, symbol2);
424 }
425
426 /* Abbrevations */
427 #define ABBREV_COMPILE_UNIT 1
428 #define ABBREV_SUBPROGRAM 2
429 #define ABBREV_PARAM 3
430 #define ABBREV_BASE_TYPE 4
431 #define ABBREV_STRUCT_TYPE 5
432 #define ABBREV_DATA_MEMBER 6
433 #define ABBREV_TYPEDEF 7
434 #define ABBREV_ENUM_TYPE 8
435 #define ABBREV_ENUMERATOR 9
436 #define ABBREV_NAMESPACE 10
437 #define ABBREV_VARIABLE 11
438 #define ABBREV_VARIABLE_LOCLIST 12
439 #define ABBREV_POINTER_TYPE 13
440 #define ABBREV_REFERENCE_TYPE 14
441 #define ABBREV_PARAM_LOCLIST 15
442 #define ABBREV_INHERITANCE 16
443 #define ABBREV_STRUCT_TYPE_NOCHILDREN 17
444 #define ABBREV_TRAMP_SUBPROGRAM 18
445
446 static int compile_unit_attr [] = {
447 DW_AT_producer ,DW_FORM_string,
448 DW_AT_name ,DW_FORM_string,
449 DW_AT_comp_dir ,DW_FORM_string,
450 DW_AT_language ,DW_FORM_data1,
451 DW_AT_low_pc ,DW_FORM_addr,
452 DW_AT_high_pc ,DW_FORM_addr,
453 DW_AT_stmt_list ,DW_FORM_data4
454 };
455
456 static int subprogram_attr [] = {
457 DW_AT_name , DW_FORM_string,
458 #ifndef TARGET_IOS
459 DW_AT_description , DW_FORM_string,
460 #endif
461 DW_AT_low_pc , DW_FORM_addr,
462 DW_AT_high_pc , DW_FORM_addr,
463 DW_AT_frame_base , DW_FORM_block1
464 };
465
466 static int tramp_subprogram_attr [] = {
467 DW_AT_name , DW_FORM_string,
468 DW_AT_low_pc , DW_FORM_addr,
469 DW_AT_high_pc , DW_FORM_addr,
470 };
471
472 static int param_attr [] = {
473 DW_AT_name, DW_FORM_string,
474 DW_AT_type, DW_FORM_ref4,
475 DW_AT_location, DW_FORM_block1
476 };
477
478 static int param_loclist_attr [] = {
479 DW_AT_name, DW_FORM_string,
480 DW_AT_type, DW_FORM_ref4,
481 DW_AT_location, DW_FORM_data4
482 };
483
484 static int base_type_attr [] = {
485 DW_AT_byte_size, DW_FORM_data1,
486 DW_AT_encoding, DW_FORM_data1,
487 DW_AT_name, DW_FORM_string
488 };
489
490 static int struct_type_attr [] = {
491 DW_AT_name, DW_FORM_string,
492 DW_AT_byte_size, DW_FORM_udata,
493 };
494
495 static int data_member_attr [] = {
496 DW_AT_name, DW_FORM_string,
497 DW_AT_type, DW_FORM_ref4,
498 DW_AT_data_member_location, DW_FORM_block1
499 };
500
501 static int typedef_attr [] = {
502 DW_AT_name, DW_FORM_string,
503 DW_AT_type, DW_FORM_ref4
504 };
505
506 static int pointer_type_attr [] = {
507 DW_AT_type, DW_FORM_ref4,
508 };
509
510 static int reference_type_attr [] = {
511 DW_AT_type, DW_FORM_ref4,
512 };
513
514 static int enum_type_attr [] = {
515 DW_AT_name, DW_FORM_string,
516 DW_AT_byte_size, DW_FORM_udata,
517 DW_AT_type, DW_FORM_ref4,
518 };
519
520 static int enumerator_attr [] = {
521 DW_AT_name, DW_FORM_string,
522 DW_AT_const_value, DW_FORM_sdata,
523 };
524
525 static int namespace_attr [] = {
526 DW_AT_name, DW_FORM_string,
527 };
528
529 static int variable_attr [] = {
530 DW_AT_name, DW_FORM_string,
531 DW_AT_type, DW_FORM_ref4,
532 DW_AT_location, DW_FORM_block1
533 };
534
535 static int variable_loclist_attr [] = {
536 DW_AT_name, DW_FORM_string,
537 DW_AT_type, DW_FORM_ref4,
538 DW_AT_location, DW_FORM_data4
539 };
540
541 static int inheritance_attr [] = {
542 DW_AT_type, DW_FORM_ref4,
543 DW_AT_data_member_location, DW_FORM_block1
544 };
545
546 typedef struct DwarfBasicType {
547 const char *die_name, *name;
548 int type;
549 int size;
550 int encoding;
551 } DwarfBasicType;
552
553 static DwarfBasicType basic_types [] = {
554 { ".LDIE_I1", "sbyte", MONO_TYPE_I1, 1, DW_ATE_signed },
555 { ".LDIE_U1", "byte", MONO_TYPE_U1, 1, DW_ATE_unsigned },
556 { ".LDIE_I2", "short", MONO_TYPE_I2, 2, DW_ATE_signed },
557 { ".LDIE_U2", "ushort", MONO_TYPE_U2, 2, DW_ATE_unsigned },
558 { ".LDIE_I4", "int", MONO_TYPE_I4, 4, DW_ATE_signed },
559 { ".LDIE_U4", "uint", MONO_TYPE_U4, 4, DW_ATE_unsigned },
560 { ".LDIE_I8", "long", MONO_TYPE_I8, 8, DW_ATE_signed },
561 { ".LDIE_U8", "ulong", MONO_TYPE_U8, 8, DW_ATE_unsigned },
562 { ".LDIE_I", "intptr", MONO_TYPE_I, SIZEOF_VOID_P, DW_ATE_signed },
563 { ".LDIE_U", "uintptr", MONO_TYPE_U, SIZEOF_VOID_P, DW_ATE_unsigned },
564 { ".LDIE_R4", "float", MONO_TYPE_R4, 4, DW_ATE_float },
565 { ".LDIE_R8", "double", MONO_TYPE_R8, 8, DW_ATE_float },
566 { ".LDIE_BOOLEAN", "boolean", MONO_TYPE_BOOLEAN, 1, DW_ATE_boolean },
567 { ".LDIE_CHAR", "char", MONO_TYPE_CHAR, 2, DW_ATE_unsigned_char },
568 { ".LDIE_STRING", "string", MONO_TYPE_STRING, sizeof (gpointer), DW_ATE_address },
569 { ".LDIE_OBJECT", "object", MONO_TYPE_OBJECT, sizeof (gpointer), DW_ATE_address },
570 { ".LDIE_SZARRAY", "object", MONO_TYPE_SZARRAY, sizeof (gpointer), DW_ATE_address },
571 };
572
573 /* Constants for encoding line number special opcodes */
574 #define OPCODE_BASE 13
575 #define LINE_BASE -5
576 #define LINE_RANGE 14
577
578 /* Subsections of the .debug_line section */
579 #define LINE_SUBSECTION_HEADER 1
580 #define LINE_SUBSECTION_INCLUDES 2
581 #define LINE_SUBSECTION_FILES 3
582 #define LINE_SUBSECTION_DATA 4
583 #define LINE_SUBSECTION_END 5
584
585 static int
586 emit_line_number_file_name (MonoDwarfWriter *w, const char *name,
587 gint64 last_mod_time, gint64 file_size)
588 {
589 int index;
590 int dir_index;
591 char *basename = NULL;
592
593 if (!w->file_to_index)
594 w->file_to_index = g_hash_table_new (g_str_hash, g_str_equal);
595
596 index = GPOINTER_TO_UINT (g_hash_table_lookup (w->file_to_index, name));
597 if (index > 0)
598 return index;
599
600 if (g_path_is_absolute (name)) {
601 char *dir = g_path_get_dirname (name);
602
603 if (!w->dir_to_index)
604 w->dir_to_index = g_hash_table_new (g_str_hash, g_str_equal);
605
606 dir_index = GPOINTER_TO_UINT (g_hash_table_lookup (w->dir_to_index, dir));
607 if (dir_index == 0) {
608 emit_section_change (w, ".debug_line", LINE_SUBSECTION_INCLUDES);
609 emit_string (w, dir);
610
611 dir_index = ++ w->line_number_dir_index;
612 g_hash_table_insert (w->dir_to_index, g_strdup (dir), GUINT_TO_POINTER (dir_index));
613 }
614
615 g_free (dir);
616
617 basename = g_path_get_basename (name);
618 } else {
619 dir_index = 0;
620 }
621
622 emit_section_change (w, ".debug_line", LINE_SUBSECTION_FILES);
623
624 if (basename)
625 emit_string (w, basename);
626 else
627 emit_string (w, name);
628 emit_uleb128 (w, dir_index);
629 emit_byte (w, 0);
630 emit_byte (w, 0);
631
632 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
633
634 if (basename)
635 g_free (basename);
636
637 index = ++ w->line_number_file_index;
638 g_hash_table_insert (w->file_to_index, g_strdup (name), GUINT_TO_POINTER (index));
639
640 return index;
641 }
642
643 static int
644 get_line_number_file_name (MonoDwarfWriter *w, const char *name)
645 {
646 int index;
647
648 g_assert (w->file_to_index);
649 index = GPOINTER_TO_UINT (g_hash_table_lookup (w->file_to_index, name));
650 g_assert (index > 0);
651 return index - 1;
652 }
653
654 static int
655 add_line_number_file_name (MonoDwarfWriter *w, const char *name,
656 gint64 last_mod_time, gint64 file_size)
657 {
658 int index;
659 char *copy;
660
661 if (!w->file_to_index) {
662 w->file_to_index = g_hash_table_new (g_str_hash, g_str_equal);
663 w->index_to_file = g_hash_table_new (NULL, NULL);
664 }
665
666 index = GPOINTER_TO_UINT (g_hash_table_lookup (w->file_to_index, name));
667 if (index > 0)
668 return index - 1;
669 index = w->line_number_file_index;
670 w->line_number_file_index ++;
671 copy = g_strdup (name);
672 g_hash_table_insert (w->file_to_index, copy, GUINT_TO_POINTER (index + 1));
673 g_hash_table_insert (w->index_to_file, GUINT_TO_POINTER (index + 1), copy);
674
675 return index;
676 }
677
678 char *
679 mono_dwarf_escape_path (const char *name)
680 {
681 if (strchr (name, '\\')) {
682 char *s;
683 int len, i, j;
684
685 len = strlen (name);
686 s = g_malloc0 ((len + 1) * 2);
687 j = 0;
688 for (i = 0; i < len; ++i) {
689 if (name [i] == '\\') {
690 s [j ++] = '\\';
691 s [j ++] = '\\';
692 } else {
693 s [j ++] = name [i];
694 }
695 }
696 return s;
697 }
698 return g_strdup (name);
699 }
700
701 static void
702 emit_all_line_number_info (MonoDwarfWriter *w)
703 {
704 int i;
705 GHashTable *dir_to_index, *index_to_dir;
706 GSList *l;
707 GSList *info_list;
708
709 g_assert (w->collect_line_info);
710
711 add_line_number_file_name (w, "<unknown>", 0, 0);
712
713 /* Collect files */
714 info_list = g_slist_reverse (w->line_info);
715 for (l = info_list; l; l = l->next) {
716 MethodLineNumberInfo *info = l->data;
717 MonoDebugMethodInfo *minfo;
718 char *source_file;
719 GPtrArray *source_file_list;
720
721 // FIXME: Free stuff
722 minfo = mono_debug_lookup_method (info->method);
723 if (!minfo)
724 continue;
725
726 mono_debug_symfile_get_line_numbers_full (minfo, &source_file, &source_file_list, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
727 for (i = 0; i < source_file_list->len; ++i) {
728 MonoDebugSourceInfo *sinfo = g_ptr_array_index (source_file_list, i);
729 add_line_number_file_name (w, sinfo->source_file, 0, 0);
730 }
731 }
732
733 /* Preprocess files */
734 dir_to_index = g_hash_table_new (g_str_hash, g_str_equal);
735 index_to_dir = g_hash_table_new (NULL, NULL);
736 for (i = 0; i < w->line_number_file_index; ++i) {
737 char *name = g_hash_table_lookup (w->index_to_file, GUINT_TO_POINTER (i + 1));
738 char *copy;
739 int dir_index = 0;
740
741 if (g_path_is_absolute (name)) {
742 char *dir = g_path_get_dirname (name);
743
744 dir_index = GPOINTER_TO_UINT (g_hash_table_lookup (dir_to_index, dir));
745 if (dir_index == 0) {
746 dir_index = w->line_number_dir_index;
747 w->line_number_dir_index ++;
748 copy = g_strdup (dir);
749 g_hash_table_insert (dir_to_index, copy, GUINT_TO_POINTER (dir_index + 1));
750 g_hash_table_insert (index_to_dir, GUINT_TO_POINTER (dir_index + 1), copy);
751 } else {
752 dir_index --;
753 }
754
755 g_free (dir);
756 }
757 }
758
759 /* Line number info header */
760 emit_section_change (w, ".debug_line", 0);
761 emit_label (w, ".Ldebug_line_section_start");
762 emit_label (w, ".Ldebug_line_start");
763 emit_symbol_diff (w, ".Ldebug_line_end", ".", -4); /* length */
764 emit_int16 (w, 0x2); /* version */
765 emit_symbol_diff (w, ".Ldebug_line_header_end", ".", -4); /* header_length */
766 emit_byte (w, 1); /* minimum_instruction_length */
767 emit_byte (w, 1); /* default_is_stmt */
768 emit_byte (w, LINE_BASE); /* line_base */
769 emit_byte (w, LINE_RANGE); /* line_range */
770 emit_byte (w, OPCODE_BASE); /* opcode_base */
771 emit_byte (w, 0); /* standard_opcode_lengths */
772 emit_byte (w, 1);
773 emit_byte (w, 1);
774 emit_byte (w, 1);
775 emit_byte (w, 1);
776 emit_byte (w, 0);
777 emit_byte (w, 0);
778 emit_byte (w, 0);
779 emit_byte (w, 1);
780 emit_byte (w, 0);
781 emit_byte (w, 0);
782 emit_byte (w, 1);
783
784 /* Includes */
785 emit_section_change (w, ".debug_line", 0);
786 for (i = 0; i < w->line_number_dir_index; ++i) {
787 char *dir = g_hash_table_lookup (index_to_dir, GUINT_TO_POINTER (i + 1));
788
789 emit_string (w, mono_dwarf_escape_path (dir));
790 }
791 /* End of Includes */
792 emit_byte (w, 0);
793
794 /* Files */
795 for (i = 0; i < w->line_number_file_index; ++i) {
796 char *name = g_hash_table_lookup (w->index_to_file, GUINT_TO_POINTER (i + 1));
797 char *basename = NULL, *dir;
798 int dir_index = 0;
799
800 if (g_path_is_absolute (name)) {
801 dir = g_path_get_dirname (name);
802
803 dir_index = GPOINTER_TO_UINT (g_hash_table_lookup (dir_to_index, dir));
804 basename = g_path_get_basename (name);
805 }
806
807 if (basename)
808 emit_string (w, basename);
809 else
810 emit_string (w, mono_dwarf_escape_path (name));
811 emit_uleb128 (w, dir_index);
812 emit_byte (w, 0);
813 emit_byte (w, 0);
814 }
815
816 /* End of Files */
817 emit_byte (w, 0);
818
819 emit_label (w, ".Ldebug_line_header_end");
820
821 /* Emit line number table */
822 for (l = info_list; l; l = l->next) {
823 MethodLineNumberInfo *info = l->data;
824 MonoDebugMethodJitInfo *dmji;
825
826 dmji = mono_debug_find_method (info->method, mono_domain_get ());;
827 emit_line_number_info (w, info->method, info->start_symbol, info->end_symbol, info->code, info->code_size, dmji);
828 mono_debug_free_method_jit_info (dmji);
829 }
830 g_slist_free (info_list);
831
832 emit_byte (w, 0);
833 emit_byte (w, 1);
834 emit_byte (w, DW_LNE_end_sequence);
835
836 emit_label (w, ".Ldebug_line_end");
837 }
838
839 /*
840 * Some assemblers like apple's do not support subsections, so we can't place
841 * .Ldebug_info_end at the end of the section using subsections. Instead, we
842 * define it every time something gets added to the .debug_info section.
843 * The apple assember seems to use the last definition.
844 */
845 static void
846 emit_debug_info_end (MonoDwarfWriter *w)
847 {
848 /* This doesn't seem to work/required with recent iphone sdk versions */
849 #if 0
850 if (!img_writer_subsections_supported (w->w))
851 fprintf (w->fp, "\n.set %sdebug_info_end,.\n", w->temp_prefix);
852 #endif
853 }
854
855 void
856 mono_dwarf_writer_emit_base_info (MonoDwarfWriter *w, const char *cu_name, GSList *base_unwind_program)
857 {
858 char *s, *build_info;
859 int i;
860
861 w->cie_program = base_unwind_program;
862
863 emit_section_change (w, ".debug_abbrev", 0);
864 emit_dwarf_abbrev (w, ABBREV_COMPILE_UNIT, DW_TAG_compile_unit, TRUE,
865 compile_unit_attr, G_N_ELEMENTS (compile_unit_attr));
866 emit_dwarf_abbrev (w, ABBREV_SUBPROGRAM, DW_TAG_subprogram, TRUE,
867 subprogram_attr, G_N_ELEMENTS (subprogram_attr));
868 emit_dwarf_abbrev (w, ABBREV_PARAM, DW_TAG_formal_parameter, FALSE,
869 param_attr, G_N_ELEMENTS (param_attr));
870 emit_dwarf_abbrev (w, ABBREV_PARAM_LOCLIST, DW_TAG_formal_parameter, FALSE,
871 param_loclist_attr, G_N_ELEMENTS (param_loclist_attr));
872 emit_dwarf_abbrev (w, ABBREV_BASE_TYPE, DW_TAG_base_type, FALSE,
873 base_type_attr, G_N_ELEMENTS (base_type_attr));
874 emit_dwarf_abbrev (w, ABBREV_STRUCT_TYPE, DW_TAG_class_type, TRUE,
875 struct_type_attr, G_N_ELEMENTS (struct_type_attr));
876 emit_dwarf_abbrev (w, ABBREV_STRUCT_TYPE_NOCHILDREN, DW_TAG_class_type, FALSE,
877 struct_type_attr, G_N_ELEMENTS (struct_type_attr));
878 emit_dwarf_abbrev (w, ABBREV_DATA_MEMBER, DW_TAG_member, FALSE,
879 data_member_attr, G_N_ELEMENTS (data_member_attr));
880 emit_dwarf_abbrev (w, ABBREV_TYPEDEF, DW_TAG_typedef, FALSE,
881 typedef_attr, G_N_ELEMENTS (typedef_attr));
882 emit_dwarf_abbrev (w, ABBREV_ENUM_TYPE, DW_TAG_enumeration_type, TRUE,
883 enum_type_attr, G_N_ELEMENTS (enum_type_attr));
884 emit_dwarf_abbrev (w, ABBREV_ENUMERATOR, DW_TAG_enumerator, FALSE,
885 enumerator_attr, G_N_ELEMENTS (enumerator_attr));
886 emit_dwarf_abbrev (w, ABBREV_NAMESPACE, DW_TAG_namespace, TRUE,
887 namespace_attr, G_N_ELEMENTS (namespace_attr));
888 emit_dwarf_abbrev (w, ABBREV_VARIABLE, DW_TAG_variable, FALSE,
889 variable_attr, G_N_ELEMENTS (variable_attr));
890 emit_dwarf_abbrev (w, ABBREV_VARIABLE_LOCLIST, DW_TAG_variable, FALSE,
891 variable_loclist_attr, G_N_ELEMENTS (variable_loclist_attr));
892 emit_dwarf_abbrev (w, ABBREV_POINTER_TYPE, DW_TAG_pointer_type, FALSE,
893 pointer_type_attr, G_N_ELEMENTS (pointer_type_attr));
894 emit_dwarf_abbrev (w, ABBREV_REFERENCE_TYPE, DW_TAG_reference_type, FALSE,
895 reference_type_attr, G_N_ELEMENTS (reference_type_attr));
896 emit_dwarf_abbrev (w, ABBREV_INHERITANCE, DW_TAG_inheritance, FALSE,
897 inheritance_attr, G_N_ELEMENTS (inheritance_attr));
898 emit_dwarf_abbrev (w, ABBREV_TRAMP_SUBPROGRAM, DW_TAG_subprogram, FALSE,
899 tramp_subprogram_attr, G_N_ELEMENTS (tramp_subprogram_attr));
900 emit_byte (w, 0);
901
902 emit_section_change (w, ".debug_info", 0);
903 emit_label (w, ".Ldebug_info_start");
904 emit_symbol_diff (w, ".Ldebug_info_end", ".Ldebug_info_begin", 0); /* length */
905 emit_label (w, ".Ldebug_info_begin");
906 emit_int16 (w, 0x2); /* DWARF version 2 */
907 emit_int32 (w, 0); /* .debug_abbrev offset */
908 emit_byte (w, sizeof (gpointer)); /* address size */
909
910 if (img_writer_subsections_supported (w->w) && w->appending) {
911 /* Emit this into a separate section so it gets placed at the end */
912 emit_section_change (w, ".debug_info", 1);
913 emit_byte (w, 0); /* close COMPILE_UNIT */
914 emit_label (w, ".Ldebug_info_end");
915 emit_section_change (w, ".debug_info", 0);
916 }
917
918 /* Compilation unit */
919 emit_uleb128 (w, ABBREV_COMPILE_UNIT);
920 build_info = mono_get_runtime_build_info ();
921 s = g_strdup_printf ("Mono AOT Compiler %s", build_info);
922 emit_string (w, s);
923 g_free (build_info);
924 g_free (s);
925 emit_string (w, cu_name);
926 emit_string (w, "");
927 emit_byte (w, DW_LANG_C);
928 emit_pointer_value (w, 0);
929 emit_pointer_value (w, 0);
930 /* offset into .debug_line section */
931 if (w->emit_line)
932 emit_symbol_diff (w, ".Ldebug_line_start", ".Ldebug_line_section_start", 0);
933 else
934 emit_pointer_value (w, 0);
935
936 /* Base types */
937 for (i = 0; i < G_N_ELEMENTS (basic_types); ++i) {
938 emit_label (w, basic_types [i].die_name);
939 emit_uleb128 (w, ABBREV_BASE_TYPE);
940 emit_byte (w, basic_types [i].size);
941 emit_byte (w, basic_types [i].encoding);
942 emit_string (w, basic_types [i].name);
943 }
944
945 emit_debug_info_end (w);
946
947 /* debug_loc section */
948 emit_section_change (w, ".debug_loc", 0);
949 emit_label (w, ".Ldebug_loc_start");
950
951 emit_cie (w);
952 }
953
954 /*
955 * mono_dwarf_writer_close:
956 *
957 * Finalize the emitted debugging info.
958 */
959 void
960 mono_dwarf_writer_close (MonoDwarfWriter *w)
961 {
962 if (!w->appending) {
963 emit_section_change (w, ".debug_info", 0);
964 emit_byte (w, 0); /* close COMPILE_UNIT */
965 emit_label (w, ".Ldebug_info_end");
966 }
967
968 if (w->collect_line_info)
969 emit_all_line_number_info (w);
970 }
971
972 static void emit_type (MonoDwarfWriter *w, MonoType *t);
973 static const char* get_type_die (MonoDwarfWriter *w, MonoType *t);
974
975 static const char*
976 get_class_die (MonoDwarfWriter *w, MonoClass *klass, gboolean vtype)
977 {
978 GHashTable *cache;
979
980 if (vtype)
981 cache = w->class_to_vtype_die;
982 else
983 cache = w->class_to_die;
984
985 return g_hash_table_lookup (cache, klass);
986 }
987
988 /* Returns the local symbol pointing to the emitted debug info */
989 static char*
990 emit_class_dwarf_info (MonoDwarfWriter *w, MonoClass *klass, gboolean vtype)
991 {
992 char *die, *pointer_die, *reference_die;
993 char *full_name, *p;
994 gpointer iter;
995 MonoClassField *field;
996 const char *fdie;
997 int k;
998 gboolean emit_namespace = FALSE, has_children;
999 GHashTable *cache;
1000
1001 if (vtype)
1002 cache = w->class_to_vtype_die;
1003 else
1004 cache = w->class_to_die;
1005
1006 die = g_hash_table_lookup (cache, klass);
1007 if (die)
1008 return die;
1009
1010 if (!((klass->byval_arg.type == MONO_TYPE_CLASS) || (klass->byval_arg.type == MONO_TYPE_OBJECT) || klass->byval_arg.type == MONO_TYPE_GENERICINST || klass->enumtype || (klass->byval_arg.type == MONO_TYPE_VALUETYPE && vtype) ||
1011 (klass->byval_arg.type >= MONO_TYPE_BOOLEAN && klass->byval_arg.type <= MONO_TYPE_R8 && !vtype)))
1012 return NULL;
1013
1014 /*
1015 * FIXME: gdb can't handle namespaces in languages it doesn't know about.
1016 */
1017 /*
1018 if (klass->name_space && klass->name_space [0] != '\0')
1019 emit_namespace = TRUE;
1020 */
1021 if (emit_namespace) {
1022 emit_uleb128 (w, ABBREV_NAMESPACE);
1023 emit_string (w, klass->name_space);
1024 }
1025
1026 full_name = g_strdup_printf ("%s%s%s", klass->name_space, klass->name_space ? "." : "", klass->name);
1027 /*
1028 * gdb doesn't support namespaces for non-C++ dwarf objects, so use _
1029 * to separate components.
1030 */
1031 for (p = full_name; *p; p ++)
1032 if (*p == '.')
1033 *p = '_';
1034
1035 die = g_strdup_printf (".LTDIE_%d", w->tdie_index);
1036 pointer_die = g_strdup_printf (".LTDIE_%d_POINTER", w->tdie_index);
1037 reference_die = g_strdup_printf (".LTDIE_%d_REFERENCE", w->tdie_index);
1038 w->tdie_index ++;
1039
1040 g_hash_table_insert (w->class_to_pointer_die, klass, pointer_die);
1041 g_hash_table_insert (w->class_to_reference_die, klass, reference_die);
1042 g_hash_table_insert (cache, klass, die);
1043
1044 if (klass->enumtype) {
1045 int size = mono_class_value_size (mono_class_from_mono_type (mono_class_enum_basetype (klass)), NULL);
1046
1047 emit_label (w, die);
1048
1049 emit_uleb128 (w, ABBREV_ENUM_TYPE);
1050 emit_string (w, full_name);
1051 emit_uleb128 (w, size);
1052 for (k = 0; k < G_N_ELEMENTS (basic_types); ++k)
1053 if (basic_types [k].type == mono_class_enum_basetype (klass)->type)
1054 break;
1055 g_assert (k < G_N_ELEMENTS (basic_types));
1056 emit_symbol_diff (w, basic_types [k].die_name, ".Ldebug_info_start", 0);
1057
1058 /* Emit enum values */
1059 iter = NULL;
1060 while ((field = mono_class_get_fields (klass, &iter))) {
1061 const char *p;
1062 int len;
1063 MonoTypeEnum def_type;
1064
1065 if (strcmp ("value__", mono_field_get_name (field)) == 0)
1066 continue;
1067 if (mono_field_is_deleted (field))
1068 continue;
1069
1070 emit_uleb128 (w, ABBREV_ENUMERATOR);
1071 emit_string (w, mono_field_get_name (field));
1072
1073 p = mono_class_get_field_default_value (field, &def_type);
1074 len = mono_metadata_decode_blob_size (p, &p);
1075 switch (mono_class_enum_basetype (klass)->type) {
1076 case MONO_TYPE_U1:
1077 case MONO_TYPE_I1:
1078 case MONO_TYPE_BOOLEAN:
1079 emit_sleb128 (w, *p);
1080 break;
1081 case MONO_TYPE_U2:
1082 case MONO_TYPE_I2:
1083 case MONO_TYPE_CHAR:
1084 emit_sleb128 (w, read16 (p));
1085 break;
1086 case MONO_TYPE_U4:
1087 case MONO_TYPE_I4:
1088 emit_sleb128 (w, read32 (p));
1089 break;
1090 case MONO_TYPE_U8:
1091 case MONO_TYPE_I8:
1092 emit_sleb128 (w, read64 (p));
1093 break;
1094 case MONO_TYPE_I:
1095 case MONO_TYPE_U:
1096 #if SIZEOF_VOID_P == 8
1097 emit_sleb128 (w, read64 (p));
1098 #else
1099 emit_sleb128 (w, read32 (p));
1100 #endif
1101 break;
1102 default:
1103 g_assert_not_reached ();
1104 }
1105 }
1106
1107 has_children = TRUE;
1108 } else {
1109 guint8 buf [128];
1110 guint8 *p;
1111 char *parent_die;
1112
1113 if (klass->parent)
1114 parent_die = emit_class_dwarf_info (w, klass->parent, FALSE);
1115 else
1116 parent_die = NULL;
1117
1118 /* Emit field types */
1119 iter = NULL;
1120 while ((field = mono_class_get_fields (klass, &iter))) {
1121 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1122 continue;
1123
1124 emit_type (w, field->type);
1125 }
1126
1127 iter = NULL;
1128 has_children = parent_die || mono_class_get_fields (klass, &iter);
1129
1130 emit_label (w, die);
1131
1132 emit_uleb128 (w, has_children ? ABBREV_STRUCT_TYPE : ABBREV_STRUCT_TYPE_NOCHILDREN);
1133 emit_string (w, full_name);
1134 emit_uleb128 (w, klass->instance_size);
1135
1136 if (parent_die) {
1137 emit_uleb128 (w, ABBREV_INHERITANCE);
1138 emit_symbol_diff (w, parent_die, ".Ldebug_info_start", 0);
1139
1140 p = buf;
1141 *p ++= DW_OP_plus_uconst;
1142 encode_uleb128 (0, p, &p);
1143 emit_byte (w, p - buf);
1144 emit_bytes (w, buf, p - buf);
1145 }
1146
1147 /* Emit fields */
1148 iter = NULL;
1149 while ((field = mono_class_get_fields (klass, &iter))) {
1150 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
1151 continue;
1152
1153 fdie = get_type_die (w, field->type);
1154 if (fdie) {
1155 emit_uleb128 (w, ABBREV_DATA_MEMBER);
1156 emit_string (w, field->name);
1157 emit_symbol_diff (w, fdie, ".Ldebug_info_start", 0);
1158 /* location */
1159 p = buf;
1160 *p ++= DW_OP_plus_uconst;
1161 if (klass->valuetype && vtype)
1162 encode_uleb128 (field->offset - sizeof (MonoObject), p, &p);
1163 else
1164 encode_uleb128 (field->offset, p, &p);
1165
1166 emit_byte (w, p - buf);
1167 emit_bytes (w, buf, p - buf);
1168 }
1169 }
1170 }
1171
1172 /* Type end */
1173 if (has_children)
1174 emit_uleb128 (w, 0x0);
1175
1176 /* Add a typedef, so we can reference the type without a 'struct' in gdb */
1177 emit_uleb128 (w, ABBREV_TYPEDEF);
1178 emit_string (w, full_name);
1179 emit_symbol_diff (w, die, ".Ldebug_info_start", 0);
1180
1181 /* Add a pointer type */
1182 emit_label (w, pointer_die);
1183
1184 emit_uleb128 (w, ABBREV_POINTER_TYPE);
1185 emit_symbol_diff (w, die, ".Ldebug_info_start", 0);
1186
1187 /* Add a reference type */
1188 emit_label (w, reference_die);
1189
1190 emit_uleb128 (w, ABBREV_REFERENCE_TYPE);
1191 emit_symbol_diff (w, die, ".Ldebug_info_start", 0);
1192
1193 g_free (full_name);
1194
1195 if (emit_namespace) {
1196 /* Namespace end */
1197 emit_uleb128 (w, 0x0);
1198 }
1199
1200 return die;
1201 }
1202
1203 static gboolean base_types_emitted [64];
1204
1205 static const char*
1206 get_type_die (MonoDwarfWriter *w, MonoType *t)
1207 {
1208 MonoClass *klass = mono_class_from_mono_type (t);
1209 int j;
1210 const char *tdie;
1211
1212 if (t->byref) {
1213 if (t->type == MONO_TYPE_VALUETYPE) {
1214 tdie = g_hash_table_lookup (w->class_to_pointer_die, klass);
1215 }
1216 else {
1217 tdie = get_class_die (w, klass, FALSE);
1218 /* Should return a pointer type to a reference */
1219 }
1220 // FIXME:
1221 t = &mono_defaults.int_class->byval_arg;
1222 }
1223 for (j = 0; j < G_N_ELEMENTS (basic_types); ++j)
1224 if (basic_types [j].type == t->type)
1225 break;
1226 if (j < G_N_ELEMENTS (basic_types)) {
1227 tdie = basic_types [j].die_name;
1228 } else {
1229 switch (t->type) {
1230 case MONO_TYPE_CLASS:
1231 tdie = g_hash_table_lookup (w->class_to_reference_die, klass);
1232 //tdie = ".LDIE_OBJECT";
1233 break;
1234 case MONO_TYPE_ARRAY:
1235 tdie = ".LDIE_OBJECT";
1236 break;
1237 case MONO_TYPE_VALUETYPE:
1238 if (klass->enumtype)
1239 tdie = get_class_die (w, klass, FALSE);
1240 else
1241 tdie = ".LDIE_I4";
1242 break;
1243 case MONO_TYPE_GENERICINST:
1244 if (!MONO_TYPE_ISSTRUCT (t)) {
1245 tdie = g_hash_table_lookup (w->class_to_reference_die, klass);
1246 } else {
1247 tdie = ".LDIE_I4";
1248 }
1249 break;
1250 case MONO_TYPE_PTR:
1251 tdie = ".LDIE_I";
1252 break;
1253 default:
1254 tdie = ".LDIE_I4";
1255 break;
1256 }
1257 }
1258
1259 g_assert (tdie);
1260
1261 return tdie;
1262 }
1263
1264 static void
1265 emit_type (MonoDwarfWriter *w, MonoType *t)
1266 {
1267 MonoClass *klass = mono_class_from_mono_type (t);
1268 int j;
1269 const char *tdie;
1270
1271 if (t->byref) {
1272 if (t->type == MONO_TYPE_VALUETYPE) {
1273 tdie = emit_class_dwarf_info (w, klass, TRUE);
1274 if (tdie)
1275 return;
1276 }
1277 else {
1278 emit_class_dwarf_info (w, klass, FALSE);
1279 }
1280 // FIXME:
1281 t = &mono_defaults.int_class->byval_arg;
1282 }
1283 for (j = 0; j < G_N_ELEMENTS (basic_types); ++j)
1284 if (basic_types [j].type == t->type)
1285 break;
1286 if (j < G_N_ELEMENTS (basic_types)) {
1287 /* Emit a boxed version of base types */
1288 if (j < 64 && !base_types_emitted [j]) {
1289 emit_class_dwarf_info (w, klass, FALSE);
1290 base_types_emitted [j] = TRUE;
1291 }
1292 } else {
1293 switch (t->type) {
1294 case MONO_TYPE_CLASS:
1295 emit_class_dwarf_info (w, klass, FALSE);
1296 break;
1297 case MONO_TYPE_ARRAY:
1298 break;
1299 case MONO_TYPE_VALUETYPE:
1300 if (klass->enumtype)
1301 emit_class_dwarf_info (w, klass, FALSE);
1302 break;
1303 case MONO_TYPE_GENERICINST:
1304 if (!MONO_TYPE_ISSTRUCT (t))
1305 emit_class_dwarf_info (w, klass, FALSE);
1306 break;
1307 case MONO_TYPE_PTR:
1308 break;
1309 default:
1310 break;
1311 }
1312 }
1313 }
1314
1315 static void
1316 emit_var_type (MonoDwarfWriter *w, MonoType *t)
1317 {
1318 const char *tdie;
1319
1320 tdie = get_type_die (w, t);
1321
1322 emit_symbol_diff (w, tdie, ".Ldebug_info_start", 0);
1323 }
1324
1325 static void
1326 encode_var_location (MonoDwarfWriter *w, MonoInst *ins, guint8 *p, guint8 **endp)
1327 {
1328 /* location */
1329 /* FIXME: This needs a location list, since the args can go from reg->stack */
1330 if (!ins || ins->flags & MONO_INST_IS_DEAD) {
1331 /* gdb treats this as optimized out */
1332 } else if (ins->opcode == OP_REGVAR) {
1333 *p = DW_OP_reg0 + mono_hw_reg_to_dwarf_reg (ins->dreg);
1334 p ++;
1335 } else if (ins->opcode == OP_REGOFFSET) {
1336 *p ++= DW_OP_breg0 + mono_hw_reg_to_dwarf_reg (ins->inst_basereg);
1337 encode_sleb128 (ins->inst_offset, p, &p);
1338 } else {
1339 // FIXME:
1340 *p ++ = DW_OP_reg0;
1341 }
1342
1343 *endp = p;
1344 }
1345
1346 static void
1347 emit_loclist (MonoDwarfWriter *w, MonoInst *ins,
1348 guint8 *loclist_begin_addr, guint8 *loclist_end_addr,
1349 guint8 *expr, guint32 expr_len)
1350 {
1351 char label [128];
1352
1353 emit_push_section (w, ".debug_loc", 0);
1354 sprintf (label, ".Lloclist_%d", w->loclist_index ++ );
1355 emit_label (w, label);
1356
1357 emit_pointer_value (w, loclist_begin_addr);
1358 emit_pointer_value (w, loclist_end_addr);
1359 emit_byte (w, expr_len % 256);
1360 emit_byte (w, expr_len / 256);
1361 emit_bytes (w, expr, expr_len);
1362
1363 emit_pointer_value (w, NULL);
1364 emit_pointer_value (w, NULL);
1365
1366 emit_pop_section (w);
1367 emit_symbol_diff (w, label, ".Ldebug_loc_start", 0);
1368 }
1369
1370 /*
1371 * MonoDisHelper->tokener doesn't take an IP argument, and we can't add one since
1372 * it is a public header.
1373 */
1374 static const guint8 *token_handler_ip;
1375
1376 static char*
1377 token_handler (MonoDisHelper *dh, MonoMethod *method, guint32 token)
1378 {
1379 char *res, *desc;
1380 MonoMethod *cmethod;
1381 MonoClass *klass;
1382 MonoClassField *field;
1383 gpointer data = NULL;
1384
1385 if (method->wrapper_type)
1386 data = mono_method_get_wrapper_data (method, token);
1387
1388 switch (*token_handler_ip) {
1389 case CEE_ISINST:
1390 case CEE_CASTCLASS:
1391 case CEE_LDELEMA:
1392 if (method->wrapper_type)
1393 klass = data;
1394 else
1395 klass = mono_class_get_full (method->klass->image, token, NULL);
1396 res = g_strdup_printf ("<%s>", klass->name);
1397 break;
1398 case CEE_NEWOBJ:
1399 case CEE_CALL:
1400 case CEE_CALLVIRT:
1401 if (method->wrapper_type)
1402 cmethod = data;
1403 else
1404 cmethod = mono_get_method_full (method->klass->image, token, NULL, NULL);
1405 desc = mono_method_full_name (cmethod, TRUE);
1406 res = g_strdup_printf ("<%s>", desc);
1407 g_free (desc);
1408 break;
1409 case CEE_CALLI:
1410 if (method->wrapper_type) {
1411 desc = mono_signature_get_desc (data, FALSE);
1412 res = g_strdup_printf ("<%s>", desc);
1413 g_free (desc);
1414 } else {
1415 res = g_strdup_printf ("<0x%08x>", token);
1416 }
1417 break;
1418 case CEE_LDFLD:
1419 case CEE_LDSFLD:
1420 case CEE_STFLD:
1421 case CEE_STSFLD:
1422 if (method->wrapper_type)
1423 field = data;
1424 else
1425 field = mono_field_from_token (method->klass->image, token, &klass, NULL);
1426 desc = mono_field_full_name (field);
1427 res = g_strdup_printf ("<%s>", desc);
1428 g_free (desc);
1429 break;
1430 default:
1431 res = g_strdup_printf ("<0x%08x>", token);
1432 break;
1433 }
1434
1435 return res;
1436 }
1437
1438 /*
1439 * disasm_ins:
1440 *
1441 * Produce a disassembled form of the IL instruction at IP. This is an extension
1442 * of mono_disasm_code_one () which can disasm tokens, handle wrapper methods, and
1443 * CEE_MONO_ opcodes.
1444 */
1445 static char*
1446 disasm_ins (MonoMethod *method, const guchar *ip, const guint8 **endip)
1447 {
1448 char *dis;
1449 MonoDisHelper dh;
1450 MonoMethodHeader *header = mono_method_get_header (method);
1451
1452 memset (&dh, 0, sizeof (dh));
1453 dh.newline = "";
1454 dh.label_format = "IL_%04x: ";
1455 dh.label_target = "IL_%04x";
1456 dh.tokener = token_handler;
1457
1458 token_handler_ip = ip;
1459 if (*ip == MONO_CUSTOM_PREFIX) {
1460 guint32 token;
1461 gpointer data;
1462
1463 switch (ip [1]) {
1464 case CEE_MONO_ICALL: {
1465 MonoJitICallInfo *info;
1466
1467 token = read32 (ip + 2);
1468 data = mono_method_get_wrapper_data (method, token);
1469 info = mono_find_jit_icall_by_addr (data);
1470 g_assert (info);
1471
1472 dis = g_strdup_printf ("IL_%04x: mono_icall <%s>", (int)(ip - header->code), info->name);
1473 ip += 6;
1474 break;
1475 }
1476 case CEE_MONO_CLASSCONST: {
1477 token = read32 (ip + 2);
1478 data = mono_method_get_wrapper_data (method, token);
1479
1480 dis = g_strdup_printf ("IL_%04x: mono_classconst <%s>", (int)(ip - header->code), ((MonoClass*)data)->name);
1481 ip += 6;
1482 break;
1483 }
1484 default:
1485 dis = mono_disasm_code_one (&dh, method, ip, &ip);
1486 }
1487 } else {
1488 dis = mono_disasm_code_one (&dh, method, ip, &ip);
1489 }
1490 token_handler_ip = NULL;
1491
1492 *endip = ip;
1493 mono_metadata_free_mh (header);
1494 return dis;
1495 }
1496
1497 static gint32
1498 il_offset_from_address (MonoMethod *method, MonoDebugMethodJitInfo *jit,
1499 guint32 native_offset)
1500 {
1501 int i;
1502
1503 if (!jit->line_numbers)
1504 return -1;
1505
1506 for (i = jit->num_line_numbers - 1; i >= 0; i--) {
1507 MonoDebugLineNumberEntry lne = jit->line_numbers [i];
1508
1509 if (lne.native_offset <= native_offset)
1510 return lne.il_offset;
1511 }
1512
1513 return -1;
1514 }
1515
1516 static int max_special_addr_diff = 0;
1517
1518 static inline void
1519 emit_advance_op (MonoDwarfWriter *w, int line_diff, int addr_diff)
1520 {
1521 gint64 opcode = 0;
1522
1523 /* Use a special opcode if possible */
1524 if (line_diff - LINE_BASE >= 0 && line_diff - LINE_BASE < LINE_RANGE) {
1525 if (max_special_addr_diff == 0)
1526 max_special_addr_diff = (255 - OPCODE_BASE) / LINE_RANGE;
1527
1528 if (addr_diff > max_special_addr_diff && (addr_diff < 2 * max_special_addr_diff)) {
1529 emit_byte (w, DW_LNS_const_add_pc);
1530 addr_diff -= max_special_addr_diff;
1531 }
1532
1533 opcode = (line_diff - LINE_BASE) + (LINE_RANGE * addr_diff) + OPCODE_BASE;
1534 if (opcode > 255)
1535 opcode = 0;
1536 }
1537
1538 if (opcode != 0) {
1539 emit_byte (w, opcode);
1540 } else {
1541 //printf ("large: %d %d %d\n", line_diff, addr_diff, max_special_addr_diff);
1542 emit_byte (w, DW_LNS_advance_line);
1543 emit_sleb128 (w, line_diff);
1544 emit_byte (w, DW_LNS_advance_pc);
1545 emit_sleb128 (w, addr_diff);
1546 emit_byte (w, DW_LNS_copy);
1547 }
1548 }
1549
1550 static gint
1551 compare_lne (MonoDebugLineNumberEntry *a, MonoDebugLineNumberEntry *b)
1552 {
1553 if (a->native_offset == b->native_offset)
1554 return a->il_offset - b->il_offset;
1555 else
1556 return a->native_offset - b->native_offset;
1557 }
1558
1559 static void
1560 emit_line_number_info (MonoDwarfWriter *w, MonoMethod *method,
1561 char *start_symbol, char *end_symbol,
1562 guint8 *code, guint32 code_size,
1563 MonoDebugMethodJitInfo *debug_info)
1564 {
1565 guint32 prev_line = 0;
1566 guint32 prev_native_offset = 0;
1567 int i, file_index, il_offset, prev_il_offset;
1568 gboolean first = TRUE;
1569 MonoDebugSourceLocation *loc;
1570 char *prev_file_name = NULL;
1571 MonoMethodHeader *header = mono_method_get_header (method);
1572 MonoDebugMethodInfo *minfo;
1573 MonoDebugLineNumberEntry *ln_array;
1574 int *native_to_il_offset = NULL;
1575
1576 if (!w->emit_line) {
1577 mono_metadata_free_mh (header);
1578 return;
1579 }
1580
1581 minfo = mono_debug_lookup_method (method);
1582
1583 /* Compute the native->IL offset mapping */
1584
1585 g_assert (code_size);
1586
1587 ln_array = g_new0 (MonoDebugLineNumberEntry, debug_info->num_line_numbers);
1588 memcpy (ln_array, debug_info->line_numbers, debug_info->num_line_numbers * sizeof (MonoDebugLineNumberEntry));
1589
1590 qsort (ln_array, debug_info->num_line_numbers, sizeof (MonoDebugLineNumberEntry), (gpointer)compare_lne);
1591
1592 native_to_il_offset = g_new0 (int, code_size + 1);
1593
1594 for (i = 0; i < debug_info->num_line_numbers; ++i) {
1595 int j;
1596 MonoDebugLineNumberEntry *lne = &ln_array [i];
1597
1598 if (i == 0) {
1599 for (j = 0; j < lne->native_offset; ++j)
1600 native_to_il_offset [j] = -1;
1601 }
1602
1603 if (i < debug_info->num_line_numbers - 1) {
1604 MonoDebugLineNumberEntry *lne_next = &ln_array [i + 1];
1605
1606 for (j = lne->native_offset; j < lne_next->native_offset; ++j)
1607 native_to_il_offset [j] = lne->il_offset;
1608 } else {
1609 for (j = lne->native_offset; j < code_size; ++j)
1610 native_to_il_offset [j] = lne->il_offset;
1611 }
1612 }
1613 g_free (ln_array);
1614
1615 prev_line = 1;
1616 prev_il_offset = -1;
1617
1618 w->cur_file_index = -1;
1619 for (i = 0; i < code_size; ++i) {
1620 int line_diff, addr_diff;
1621
1622 if (!minfo)
1623 continue;
1624
1625 if (!debug_info->line_numbers)
1626 continue;
1627
1628 if (native_to_il_offset)
1629 il_offset = native_to_il_offset [i];
1630 else
1631 il_offset = il_offset_from_address (method, debug_info, i);
1632 /*
1633 il_offset = il_offset_from_address (method, debug_info, i);
1634
1635 g_assert (il_offset == native_to_il_offset [i]);
1636 */
1637
1638 il_offset = native_to_il_offset [i];
1639 if (il_offset < 0)
1640 continue;
1641
1642 if (il_offset == prev_il_offset)
1643 continue;
1644
1645 prev_il_offset = il_offset;
1646
1647 loc = mono_debug_symfile_lookup_location (minfo, il_offset);
1648 if (!(loc && loc->source_file))
1649 continue;
1650
1651 line_diff = (gint32)loc->row - (gint32)prev_line;
1652 addr_diff = i - prev_native_offset;
1653
1654 if (first) {
1655 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
1656
1657 emit_byte (w, 0);
1658 emit_byte (w, sizeof (gpointer) + 1);
1659 emit_byte (w, DW_LNE_set_address);
1660 if (start_symbol)
1661 emit_pointer_unaligned (w, start_symbol);
1662 else
1663 emit_pointer_value (w, code);
1664
1665 /*
1666 * The prolog+initlocals region does not have a line number, this
1667 * makes them belong to the first line of the method.
1668 */
1669 emit_byte (w, DW_LNS_advance_line);
1670 //printf ("FIRST: %d %d %d\n", prev_line, loc->row, il_offset);
1671 emit_sleb128 (w, (gint32)loc->row - (gint32)prev_line);
1672 first = FALSE;
1673 }
1674
1675 if (loc->row != prev_line) {
1676 if (!prev_file_name || strcmp (loc->source_file, prev_file_name) != 0) {
1677 /* Add an entry to the file table */
1678 /* FIXME: Avoid duplicates */
1679 if (w->collect_line_info)
1680 file_index = get_line_number_file_name (w, loc->source_file) + 1;
1681 else
1682 file_index = emit_line_number_file_name (w, loc->source_file, 0, 0);
1683 g_free (prev_file_name);
1684 prev_file_name = g_strdup (loc->source_file);
1685
1686 if (w->cur_file_index != file_index) {
1687 emit_byte (w, DW_LNS_set_file);
1688 emit_uleb128 (w, file_index);
1689 emit_byte (w, DW_LNS_copy);
1690 w->cur_file_index = file_index;
1691 }
1692 }
1693 }
1694
1695 if (loc->row != prev_line && !first) {
1696 //printf ("X: %p(+0x%x) %d %s:%d(+%d)\n", code + i, addr_diff, loc->il_offset, loc->source_file, loc->row, line_diff);
1697 emit_advance_op (w, line_diff, addr_diff);
1698
1699 prev_line = loc->row;
1700 prev_native_offset = i;
1701 }
1702
1703 mono_debug_symfile_free_location (loc);
1704 first = FALSE;
1705 }
1706
1707 g_free (native_to_il_offset);
1708 g_free (prev_file_name);
1709
1710 if (!first) {
1711 emit_byte (w, DW_LNS_advance_pc);
1712 emit_sleb128 (w, code_size - prev_native_offset);
1713 emit_byte (w, DW_LNS_copy);
1714
1715 emit_byte (w, 0);
1716 emit_byte (w, 1);
1717 emit_byte (w, DW_LNE_end_sequence);
1718 } else if (!start_symbol) {
1719 /* No debug info, XDEBUG mode */
1720 char *name, *dis;
1721 const guint8 *ip = header->code;
1722 int prev_line, prev_native_offset;
1723 int *il_to_line;
1724
1725 /*
1726 * Emit the IL code into a temporary file and emit line number info
1727 * referencing that file.
1728 */
1729
1730 name = mono_method_full_name (method, TRUE);
1731 fprintf (w->il_file, "// %s\n", name);
1732 w->il_file_line_index ++;
1733 g_free (name);
1734
1735 il_to_line = g_new0 (int, header->code_size);
1736
1737 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
1738 emit_byte (w, 0);
1739 emit_byte (w, sizeof (gpointer) + 1);
1740 emit_byte (w, DW_LNE_set_address);
1741 emit_pointer_value (w, code);
1742
1743 // FIXME: Optimize this
1744 while (ip < header->code + header->code_size) {
1745 int il_offset = ip - header->code;
1746
1747 /* Emit IL */
1748 w->il_file_line_index ++;
1749
1750 dis = disasm_ins (method, ip, &ip);
1751 fprintf (w->il_file, "%s\n", dis);
1752 g_free (dis);
1753
1754 il_to_line [il_offset] = w->il_file_line_index;
1755 }
1756
1757 /* Emit line number info */
1758 prev_line = 1;
1759 prev_native_offset = 0;
1760 for (i = 0; i < debug_info->num_line_numbers; ++i) {
1761 MonoDebugLineNumberEntry *lne = &debug_info->line_numbers [i];
1762 int line;
1763
1764 if (lne->il_offset >= header->code_size)
1765 continue;
1766 line = il_to_line [lne->il_offset];
1767 if (!line) {
1768 /*
1769 * This seems to happen randomly, it looks like il_offset points
1770 * into the middle of an instruction.
1771 */
1772 continue;
1773 /*
1774 printf ("%s\n", mono_method_full_name (method, TRUE));
1775 printf ("%d %d\n", lne->il_offset, header->code_size);
1776 g_assert (line);
1777 */
1778 }
1779
1780 if (line - prev_line != 0) {
1781 emit_advance_op (w, line - prev_line, (gint32)lne->native_offset - prev_native_offset);
1782
1783 prev_line = line;
1784 prev_native_offset = lne->native_offset;
1785 }
1786 }
1787
1788 emit_byte (w, DW_LNS_advance_pc);
1789 emit_sleb128 (w, code_size - prev_native_offset);
1790 emit_byte (w, DW_LNS_copy);
1791
1792 emit_byte (w, 0);
1793 emit_byte (w, 1);
1794 emit_byte (w, DW_LNE_end_sequence);
1795
1796 fflush (w->il_file);
1797 g_free (il_to_line);
1798 }
1799 mono_metadata_free_mh (header);
1800 }
1801
1802 static MonoMethodVar*
1803 find_vmv (MonoCompile *cfg, MonoInst *ins)
1804 {
1805 int j;
1806
1807 if (cfg->varinfo) {
1808 for (j = 0; j < cfg->num_varinfo; ++j) {
1809 if (cfg->varinfo [j] == ins)
1810 break;
1811 }
1812
1813 if (j < cfg->num_varinfo) {
1814 return MONO_VARINFO (cfg, j);
1815 }
1816 }
1817
1818 return NULL;
1819 }
1820
1821 void
1822 mono_dwarf_writer_emit_method (MonoDwarfWriter *w, MonoCompile *cfg, MonoMethod *method, char *start_symbol, char *end_symbol, guint8 *code, guint32 code_size, MonoInst **args, MonoInst **locals, GSList *unwind_info, MonoDebugMethodJitInfo *debug_info)
1823 {
1824 char *name;
1825 MonoMethodSignature *sig;
1826 MonoMethodHeader *header;
1827 char **names;
1828 MonoDebugLocalsInfo *locals_info;
1829 int i;
1830 guint8 buf [128];
1831 guint8 *p;
1832
1833 emit_section_change (w, ".debug_info", 0);
1834
1835 sig = mono_method_signature (method);
1836 header = mono_method_get_header (method);
1837
1838 /* Parameter types */
1839 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
1840 MonoType *t;
1841
1842 if (i == 0 && sig->hasthis) {
1843 if (method->klass->valuetype)
1844 t = &method->klass->this_arg;
1845 else
1846 t = &method->klass->byval_arg;
1847 } else {
1848 t = sig->params [i - sig->hasthis];
1849 }
1850
1851 emit_type (w, t);
1852 }
1853 //emit_type (w, &mono_defaults.int32_class->byval_arg);
1854
1855 /* Local types */
1856 for (i = 0; i < header->num_locals; ++i) {
1857 emit_type (w, header->locals [i]);
1858 }
1859
1860 /* Subprogram */
1861 names = g_new0 (char *, sig->param_count);
1862 mono_method_get_param_names (method, (const char **) names);
1863
1864 emit_uleb128 (w, ABBREV_SUBPROGRAM);
1865 name = mono_method_full_name (method, FALSE);
1866 emit_string (w, name);
1867 #ifndef TARGET_IOS
1868 emit_string (w, name);
1869 #endif
1870 g_free (name);
1871 if (start_symbol) {
1872 emit_pointer_unaligned (w, start_symbol);
1873 emit_pointer_unaligned (w, end_symbol);
1874 } else {
1875 emit_pointer_value (w, code);
1876 emit_pointer_value (w, code + code_size);
1877 }
1878 /* frame_base */
1879 emit_byte (w, 2);
1880 emit_byte (w, DW_OP_breg6);
1881 emit_byte (w, 16);
1882
1883 /* Parameters */
1884 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
1885 MonoInst *arg = args ? args [i] : NULL;
1886 MonoType *t;
1887 const char *pname;
1888 char pname_buf [128];
1889 MonoMethodVar *vmv = NULL;
1890 gboolean need_loclist = FALSE;
1891
1892 vmv = find_vmv (cfg, arg);
1893 if (code && vmv && (vmv->live_range_start || vmv->live_range_end))
1894 need_loclist = TRUE;
1895
1896 if (i == 0 && sig->hasthis) {
1897 if (method->klass->valuetype)
1898 t = &method->klass->this_arg;
1899 else
1900 t = &method->klass->byval_arg;
1901 pname = "this";
1902 } else {
1903 t = sig->params [i - sig->hasthis];
1904 pname = names [i - sig->hasthis];
1905 }
1906
1907 emit_uleb128 (w, need_loclist ? ABBREV_PARAM_LOCLIST : ABBREV_PARAM);
1908 /* name */
1909 if (pname[0] == '\0') {
1910 sprintf (pname_buf, "param%d", i - sig->hasthis);
1911 pname = pname_buf;
1912 }
1913 emit_string (w, pname);
1914 /* type */
1915 if (!arg || arg->flags & MONO_INST_IS_DEAD)
1916 emit_var_type (w, &mono_defaults.int32_class->byval_arg);
1917 else
1918 emit_var_type (w, t);
1919
1920 p = buf;
1921 encode_var_location (w, arg, p, &p);
1922 if (need_loclist) {
1923 vmv->live_range_start = 0;
1924 if (vmv->live_range_end == 0)
1925 /* FIXME: Uses made in calls are not recorded */
1926 vmv->live_range_end = code_size;
1927 emit_loclist (w, arg, code + vmv->live_range_start, code + vmv->live_range_end, buf, p - buf);
1928 } else {
1929 emit_byte (w, p - buf);
1930 emit_bytes (w, buf, p - buf);
1931 }
1932 }
1933 g_free (names);
1934
1935 /* Locals */
1936 locals_info = mono_debug_lookup_locals (method);
1937
1938 for (i = 0; i < header->num_locals; ++i) {
1939 MonoInst *ins = locals [i];
1940 char name_buf [128];
1941 int j;
1942 MonoMethodVar *vmv = NULL;
1943 gboolean need_loclist = FALSE;
1944 char *lname;
1945
1946 /* ins->dreg no longer contains the original vreg */
1947 vmv = find_vmv (cfg, ins);
1948 if (code && vmv) {
1949 if (vmv->live_range_start) {
1950 /* This variable has a precise live range */
1951 need_loclist = TRUE;
1952 }
1953 }
1954
1955 emit_uleb128 (w, need_loclist ? ABBREV_VARIABLE_LOCLIST : ABBREV_VARIABLE);
1956 /* name */
1957 lname = NULL;
1958 if (locals_info) {
1959 for (j = 0; j < locals_info->num_locals; ++j)
1960 if (locals_info->locals [j].index == i)
1961 break;
1962 if (j < locals_info->num_locals)
1963 lname = locals_info->locals [j].name;
1964 }
1965 if (lname) {
1966 emit_string (w, lname);
1967 } else {
1968 sprintf (name_buf, "V_%d", i);
1969 emit_string (w, name_buf);
1970 }
1971 /* type */
1972 if (!ins || ins->flags & MONO_INST_IS_DEAD)
1973 emit_var_type (w, &mono_defaults.int32_class->byval_arg);
1974 else
1975 emit_var_type (w, header->locals [i]);
1976
1977 p = buf;
1978 encode_var_location (w, ins, p, &p);
1979
1980 if (need_loclist) {
1981 if (vmv->live_range_end == 0)
1982 /* FIXME: Uses made in calls are not recorded */
1983 vmv->live_range_end = code_size;
1984 emit_loclist (w, ins, code + vmv->live_range_start, code + vmv->live_range_end, buf, p - buf);
1985 } else {
1986 emit_byte (w, p - buf);
1987 emit_bytes (w, buf, p - buf);
1988 }
1989 }
1990
1991 if (locals_info)
1992 mono_debug_symfile_free_locals (locals_info);
1993
1994 /* Subprogram end */
1995 emit_uleb128 (w, 0x0);
1996
1997 emit_line (w);
1998
1999 emit_debug_info_end (w);
2000
2001 /* Emit unwind info */
2002 if (unwind_info) {
2003 emit_fde (w, w->fde_index, start_symbol, end_symbol, code, code_size, unwind_info, TRUE);
2004 w->fde_index ++;
2005 }
2006
2007 /* Emit line number info */
2008 /* != could happen when using --regression */
2009 if (debug_info && (debug_info->code_start == code)) {
2010 if (w->collect_line_info) {
2011 MethodLineNumberInfo *info;
2012
2013 /* Save the information needed to emit the line number info later at once */
2014 info = g_new0 (MethodLineNumberInfo, 1);
2015 info->method = method;
2016 info->start_symbol = g_strdup (start_symbol);
2017 info->end_symbol = g_strdup (end_symbol);
2018 info->code = code;
2019 info->code_size = code_size;
2020 w->line_info = g_slist_prepend (w->line_info, info);
2021 } else {
2022 emit_line_number_info (w, method, start_symbol, end_symbol, code, code_size, debug_info);
2023 }
2024 }
2025
2026 emit_line (w);
2027 mono_metadata_free_mh (header);
2028 }
2029
2030 void
2031 mono_dwarf_writer_emit_trampoline (MonoDwarfWriter *w, const char *tramp_name, char *start_symbol, char *end_symbol, guint8 *code, guint32 code_size, GSList *unwind_info)
2032 {
2033 emit_section_change (w, ".debug_info", 0);
2034
2035 /* Subprogram */
2036 emit_uleb128 (w, ABBREV_TRAMP_SUBPROGRAM);
2037 emit_string (w, tramp_name);
2038 emit_pointer_value (w, code);
2039 emit_pointer_value (w, code + code_size);
2040
2041 /* Subprogram end */
2042 emit_uleb128 (w, 0x0);
2043
2044 emit_debug_info_end (w);
2045
2046 /* Emit unwind info */
2047 emit_fde (w, w->fde_index, start_symbol, end_symbol, code, code_size, unwind_info, FALSE);
2048 w->fde_index ++;
2049 }
2050 #endif /* End of: !defined(DISABLE_AOT) && !defined(DISABLE_JIT) */
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