2 * dwarfwriter.c: Creation of DWARF debug information
5 * Zoltan Varga (vargaz@gmail.com)
7 * (C) 2008-2009 Novell, Inc.
12 #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT)
13 #include "dwarfwriter.h"
15 #include <sys/types.h>
22 #include <mono/metadata/mono-endian.h>
23 #include <mono/metadata/debug-mono-symfile.h>
24 #include <mono/utils/mono-compiler.h>
26 #ifndef PLATFORM_WIN32
27 #include <mono/utils/freebsd-elf32.h>
28 #include <mono/utils/freebsd-elf64.h>
31 #include <mono/utils/freebsd-dwarf.h>
33 struct _MonoDwarfWriter
36 GHashTable *class_to_die, *class_to_vtype_die, *class_to_pointer_die;
37 GHashTable *class_to_reference_die;
38 int fde_index, tdie_index, line_number_file_index, line_number_dir_index;
39 GHashTable *file_to_index, *dir_to_index;
41 int il_file_line_index, loclist_index;
44 const char *temp_prefix;
49 * mono_dwarf_writer_create:
51 * Create a DWARF writer object. WRITER is the underlying image writer this
52 * writer will emit to. IL_FILE is the file where IL code will be dumped to for
53 * methods which have no line number info. It can be NULL.
56 mono_dwarf_writer_create (MonoImageWriter *writer, FILE *il_file)
58 MonoDwarfWriter *w = g_new0 (MonoDwarfWriter, 1);
63 w->fp = img_writer_get_fp (w->w);
64 w->temp_prefix = img_writer_get_temp_label_prefix (w->w);
70 mono_dwarf_writer_destroy (MonoDwarfWriter *w)
75 /* Wrappers around the image writer functions */
78 emit_section_change (MonoDwarfWriter *w, const char *section_name, int subsection_index)
80 img_writer_emit_section_change (w->w, section_name, subsection_index);
84 emit_push_section (MonoDwarfWriter *w, const char *section_name, int subsection)
86 img_writer_emit_push_section (w->w, section_name, subsection);
90 emit_pop_section (MonoDwarfWriter *w)
92 img_writer_emit_pop_section (w->w);
96 emit_local_symbol (MonoDwarfWriter *w, const char *name, const char *end_label, gboolean func)
98 img_writer_emit_local_symbol (w->w, name, end_label, func);
102 emit_label (MonoDwarfWriter *w, const char *name)
104 img_writer_emit_label (w->w, name);
108 emit_bytes (MonoDwarfWriter *w, const guint8* buf, int size)
110 img_writer_emit_bytes (w->w, buf, size);
114 emit_string (MonoDwarfWriter *w, const char *value)
116 img_writer_emit_string (w->w, value);
120 emit_line (MonoDwarfWriter *w)
122 img_writer_emit_line (w->w);
126 emit_alignment (MonoDwarfWriter *w, int size)
128 img_writer_emit_alignment (w->w, size);
132 emit_pointer_unaligned (MonoDwarfWriter *w, const char *target)
134 img_writer_emit_pointer_unaligned (w->w, target);
138 emit_pointer (MonoDwarfWriter *w, const char *target)
140 img_writer_emit_pointer (w->w, target);
144 emit_int16 (MonoDwarfWriter *w, int value)
146 img_writer_emit_int16 (w->w, value);
150 emit_int32 (MonoDwarfWriter *w, int value)
152 img_writer_emit_int32 (w->w, value);
156 emit_symbol_diff (MonoDwarfWriter *w, const char *end, const char* start, int offset)
158 img_writer_emit_symbol_diff (w->w, end, start, offset);
162 emit_zero_bytes (MonoDwarfWriter *w, int num)
164 img_writer_emit_zero_bytes (w->w, num);
168 emit_byte (MonoDwarfWriter *w, guint8 val)
170 img_writer_emit_byte (w->w, val);
173 static G_GNUC_UNUSED void
174 emit_uleb128 (MonoDwarfWriter *w, guint32 value)
177 guint8 b = value & 0x7f;
179 if (value != 0) /* more bytes to come */
185 static G_GNUC_UNUSED void
186 emit_sleb128 (MonoDwarfWriter *w, gint64 value)
189 gboolean negative = (value < 0);
196 /* the following is unnecessary if the
197 * implementation of >>= uses an arithmetic rather
198 * than logical shift for a signed left operand
202 value |= - ((gint64)1 <<(size - 7));
203 /* sign bit of byte is second high order bit (0x40) */
204 if ((value == 0 && !(byte & 0x40)) ||
205 (value == -1 && (byte & 0x40)))
213 static G_GNUC_UNUSED void
214 encode_uleb128 (guint32 value, guint8 *buf, guint8 **endbuf)
219 guint8 b = value & 0x7f;
221 if (value != 0) /* more bytes to come */
229 static G_GNUC_UNUSED void
230 encode_sleb128 (gint32 value, guint8 *buf, guint8 **endbuf)
233 gboolean negative = (value < 0);
241 /* the following is unnecessary if the
242 * implementation of >>= uses an arithmetic rather
243 * than logical shift for a signed left operand
247 value |= - (1 <<(size - 7));
248 /* sign bit of byte is second high order bit (0x40) */
249 if ((value == 0 && !(byte & 0x40)) ||
250 (value == -1 && (byte & 0x40)))
261 emit_dwarf_abbrev (MonoDwarfWriter *w, int code, int tag, gboolean has_child,
262 int *attrs, int attrs_len)
266 emit_uleb128 (w, code);
267 emit_uleb128 (w, tag);
268 emit_byte (w, has_child);
270 for (i = 0; i < attrs_len; i++)
271 emit_uleb128 (w, attrs [i]);
277 emit_cie (MonoDwarfWriter *w)
279 emit_section_change (w, ".debug_frame", 0);
281 emit_alignment (w, 8);
284 emit_symbol_diff (w, ".Lcie0_end", ".", -4); /* length */
285 emit_int32 (w, 0xffffffff); /* CIE id */
286 emit_byte (w, 3); /* version */
287 emit_string (w, ""); /* augmention */
288 emit_sleb128 (w, 1); /* code alignment factor */
289 emit_sleb128 (w, mono_unwind_get_dwarf_data_align ()); /* data alignment factor */
290 emit_uleb128 (w, mono_unwind_get_dwarf_pc_reg ());
292 w->cie_program = w->cie_program;
293 if (w->cie_program) {
295 guint8 *uw_info = mono_unwind_ops_encode (w->cie_program, &uw_info_len);
296 emit_bytes (w, uw_info, uw_info_len);
300 emit_alignment (w, sizeof (gpointer));
301 emit_label (w, ".Lcie0_end");
305 emit_pointer_value (MonoDwarfWriter *w, gpointer ptr)
307 gssize val = (gssize)ptr;
308 emit_bytes (w, (guint8*)&val, sizeof (gpointer));
312 emit_fde (MonoDwarfWriter *w, int fde_index, char *start_symbol, char *end_symbol,
313 guint8 *code, guint32 code_size, GSList *unwind_ops, gboolean use_cie)
320 emit_section_change (w, ".debug_frame", 0);
322 sprintf (symbol, ".Lfde%d_end", fde_index);
323 emit_symbol_diff (w, symbol, ".", -4); /* length */
324 emit_int32 (w, 0); /* CIE_pointer */
326 emit_pointer (w, start_symbol); /* initial_location */
328 emit_symbol_diff (w, end_symbol, start_symbol, 0); /* address_range */
330 g_assert (code_size);
331 emit_int32 (w, code_size);
334 emit_pointer_value (w, code);
335 emit_int32 (w, code_size);
337 #if SIZEOF_VOID_P == 8
338 /* Upper 32 bits of code size */
343 if (w->cie_program) {
344 // FIXME: Check that the ops really begin with the CIE program */
347 for (i = 0; i < g_slist_length (w->cie_program); ++i)
351 /* Convert the list of MonoUnwindOps to the format used by DWARF */
352 uw_info = mono_unwind_ops_encode (l, &uw_info_len);
353 emit_bytes (w, uw_info, uw_info_len);
356 emit_alignment (w, sizeof (gpointer));
357 sprintf (symbol, ".Lfde%d_end", fde_index);
358 emit_label (w, symbol);
362 #define ABBREV_COMPILE_UNIT 1
363 #define ABBREV_SUBPROGRAM 2
364 #define ABBREV_PARAM 3
365 #define ABBREV_BASE_TYPE 4
366 #define ABBREV_STRUCT_TYPE 5
367 #define ABBREV_DATA_MEMBER 6
368 #define ABBREV_TYPEDEF 7
369 #define ABBREV_ENUM_TYPE 8
370 #define ABBREV_ENUMERATOR 9
371 #define ABBREV_NAMESPACE 10
372 #define ABBREV_VARIABLE 11
373 #define ABBREV_VARIABLE_LOCLIST 12
374 #define ABBREV_POINTER_TYPE 13
375 #define ABBREV_REFERENCE_TYPE 14
376 #define ABBREV_PARAM_LOCLIST 15
377 #define ABBREV_INHERITANCE 16
379 static int compile_unit_attr [] = {
380 DW_AT_producer ,DW_FORM_string,
381 DW_AT_name ,DW_FORM_string,
382 DW_AT_comp_dir ,DW_FORM_string,
383 DW_AT_language ,DW_FORM_data1,
384 DW_AT_low_pc ,DW_FORM_addr,
385 DW_AT_high_pc ,DW_FORM_addr,
386 DW_AT_stmt_list ,DW_FORM_data4
389 static int subprogram_attr [] = {
390 DW_AT_name , DW_FORM_string,
391 DW_AT_low_pc , DW_FORM_addr,
392 DW_AT_high_pc , DW_FORM_addr,
393 DW_AT_frame_base , DW_FORM_block1
396 static int param_attr [] = {
397 DW_AT_name, DW_FORM_string,
398 DW_AT_type, DW_FORM_ref4,
399 DW_AT_location, DW_FORM_block1
402 static int param_loclist_attr [] = {
403 DW_AT_name, DW_FORM_string,
404 DW_AT_type, DW_FORM_ref4,
405 DW_AT_location, DW_FORM_data4
408 static int base_type_attr [] = {
409 DW_AT_byte_size, DW_FORM_data1,
410 DW_AT_encoding, DW_FORM_data1,
411 DW_AT_name, DW_FORM_string
414 static int struct_type_attr [] = {
415 DW_AT_name, DW_FORM_string,
416 DW_AT_byte_size, DW_FORM_udata,
419 static int data_member_attr [] = {
420 DW_AT_name, DW_FORM_string,
421 DW_AT_type, DW_FORM_ref4,
422 DW_AT_data_member_location, DW_FORM_block1
425 static int typedef_attr [] = {
426 DW_AT_name, DW_FORM_string,
427 DW_AT_type, DW_FORM_ref4
430 static int pointer_type_attr [] = {
431 DW_AT_type, DW_FORM_ref4,
434 static int reference_type_attr [] = {
435 DW_AT_type, DW_FORM_ref4,
438 static int enum_type_attr [] = {
439 DW_AT_name, DW_FORM_string,
440 DW_AT_byte_size, DW_FORM_udata,
441 DW_AT_type, DW_FORM_ref4,
444 static int enumerator_attr [] = {
445 DW_AT_name, DW_FORM_string,
446 DW_AT_const_value, DW_FORM_sdata,
449 static int namespace_attr [] = {
450 DW_AT_name, DW_FORM_string,
453 static int variable_attr [] = {
454 DW_AT_name, DW_FORM_string,
455 DW_AT_type, DW_FORM_ref4,
456 DW_AT_location, DW_FORM_block1
459 static int variable_loclist_attr [] = {
460 DW_AT_name, DW_FORM_string,
461 DW_AT_type, DW_FORM_ref4,
462 DW_AT_location, DW_FORM_data4
465 static int inheritance_attr [] = {
466 DW_AT_type, DW_FORM_ref4,
467 DW_AT_data_member_location, DW_FORM_block1
470 typedef struct DwarfBasicType {
471 const char *die_name, *name;
477 static DwarfBasicType basic_types [] = {
478 { ".LDIE_I1", "sbyte", MONO_TYPE_I1, 1, DW_ATE_signed },
479 { ".LDIE_U1", "byte", MONO_TYPE_U1, 1, DW_ATE_unsigned },
480 { ".LDIE_I2", "short", MONO_TYPE_I2, 2, DW_ATE_signed },
481 { ".LDIE_U2", "ushort", MONO_TYPE_U2, 2, DW_ATE_unsigned },
482 { ".LDIE_I4", "int", MONO_TYPE_I4, 4, DW_ATE_signed },
483 { ".LDIE_U4", "uint", MONO_TYPE_U4, 4, DW_ATE_unsigned },
484 { ".LDIE_I8", "long", MONO_TYPE_I8, 8, DW_ATE_signed },
485 { ".LDIE_U8", "ulong", MONO_TYPE_U8, 8, DW_ATE_unsigned },
486 { ".LDIE_I", "intptr", MONO_TYPE_I, SIZEOF_VOID_P, DW_ATE_signed },
487 { ".LDIE_U", "uintptr", MONO_TYPE_U, SIZEOF_VOID_P, DW_ATE_unsigned },
488 { ".LDIE_R4", "float", MONO_TYPE_R4, 4, DW_ATE_float },
489 { ".LDIE_R8", "double", MONO_TYPE_R8, 8, DW_ATE_float },
490 { ".LDIE_BOOLEAN", "boolean", MONO_TYPE_BOOLEAN, 1, DW_ATE_boolean },
491 { ".LDIE_CHAR", "char", MONO_TYPE_CHAR, 2, DW_ATE_unsigned_char },
492 { ".LDIE_STRING", "string", MONO_TYPE_STRING, sizeof (gpointer), DW_ATE_address },
493 { ".LDIE_OBJECT", "object", MONO_TYPE_OBJECT, sizeof (gpointer), DW_ATE_address },
494 { ".LDIE_SZARRAY", "object", MONO_TYPE_SZARRAY, sizeof (gpointer), DW_ATE_address },
497 /* Constants for encoding line number special opcodes */
498 #define OPCODE_BASE 13
500 #define LINE_RANGE 14
502 /* Subsections of the .debug_line section */
503 #define LINE_SUBSECTION_HEADER 1
504 #define LINE_SUBSECTION_INCLUDES 2
505 #define LINE_SUBSECTION_FILES 3
506 #define LINE_SUBSECTION_DATA 4
507 #define LINE_SUBSECTION_END 5
510 emit_line_number_file_name (MonoDwarfWriter *w, const char *name,
511 gint64 last_mod_time, gint64 file_size)
515 char *basename = NULL;
517 if (!w->file_to_index)
518 w->file_to_index = g_hash_table_new (g_str_hash, g_str_equal);
520 index = GPOINTER_TO_UINT (g_hash_table_lookup (w->file_to_index, name));
524 if (g_path_is_absolute (name)) {
525 char *dir = g_path_get_dirname (name);
527 if (!w->dir_to_index)
528 w->dir_to_index = g_hash_table_new (g_str_hash, g_str_equal);
530 dir_index = GPOINTER_TO_UINT (g_hash_table_lookup (w->dir_to_index, dir));
531 if (dir_index == 0) {
532 emit_section_change (w, ".debug_line", LINE_SUBSECTION_INCLUDES);
533 emit_string (w, dir);
535 dir_index = ++ w->line_number_dir_index;
536 g_hash_table_insert (w->dir_to_index, g_strdup (dir), GUINT_TO_POINTER (dir_index));
541 basename = g_path_get_basename (name);
546 emit_section_change (w, ".debug_line", LINE_SUBSECTION_FILES);
549 emit_string (w, basename);
551 emit_string (w, name);
552 emit_uleb128 (w, dir_index);
556 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
561 index = ++ w->line_number_file_index;
562 g_hash_table_insert (w->file_to_index, g_strdup (name), GUINT_TO_POINTER (index));
568 emit_line_number_info_begin (MonoDwarfWriter *w)
570 /* Line number info header */
572 * GAS seems to emit its own data to the end of the first subsection, so we use
573 * subsections 1, 2 etc:
574 * 1 - contains the header
575 * 2 - contains the file names
576 * 3 - contains the end of the header + the data
579 emit_section_change (w, ".debug_line", 0);
580 emit_label (w, ".Ldebug_line_section_start");
581 emit_section_change (w, ".debug_line", LINE_SUBSECTION_HEADER);
582 emit_label (w, ".Ldebug_line_start");
583 emit_symbol_diff (w, ".Ldebug_line_end", ".", -4); /* length */
584 emit_int16 (w, 0x2); /* version */
585 emit_symbol_diff (w, ".Ldebug_line_header_end", ".", -4); /* header_length */
586 emit_byte (w, 1); /* minimum_instruction_length */
587 emit_byte (w, 1); /* default_is_stmt */
588 emit_byte (w, LINE_BASE); /* line_base */
589 emit_byte (w, LINE_RANGE); /* line_range */
590 emit_byte (w, OPCODE_BASE); /* opcode_base */
591 emit_byte (w, 0); /* standard_opcode_lengths */
605 emit_section_change (w, ".debug_line", LINE_SUBSECTION_INCLUDES);
607 /* End of Includes */
608 emit_section_change (w, ".debug_line", LINE_SUBSECTION_FILES);
612 emit_line_number_file_name (w, "xdb.il", 0, 0);
615 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
618 emit_label (w, ".Ldebug_line_header_end");
620 /* Emit this into a separate subsection so it gets placed at the end */
621 emit_section_change (w, ".debug_line", LINE_SUBSECTION_END);
625 emit_byte (w, DW_LNE_end_sequence);
627 emit_label (w, ".Ldebug_line_end");
631 * Some assemblers like apple's do not support subsections, so we can't place
632 * .Ldebug_info_end at the end of the section using subsections. Instead, we
633 * define it every time something gets added to the .debug_info section.
634 * The apple assember seems to use the last definition.
637 emit_debug_info_end (MonoDwarfWriter *w)
639 if (!img_writer_subsections_supported (w->w))
640 fprintf (w->fp, "\n.set %sdebug_info_end,.\n", w->temp_prefix);
644 mono_dwarf_writer_emit_base_info (MonoDwarfWriter *w, GSList *base_unwind_program)
646 char *s, *build_info;
649 if (!img_writer_subsections_supported (w->w))
650 /* Can't emit line number info without subsections */
651 w->emit_line = FALSE;
655 w->cie_program = base_unwind_program;
657 emit_section_change (w, ".debug_abbrev", 0);
658 emit_dwarf_abbrev (w, ABBREV_COMPILE_UNIT, DW_TAG_compile_unit, TRUE,
659 compile_unit_attr, G_N_ELEMENTS (compile_unit_attr));
660 emit_dwarf_abbrev (w, ABBREV_SUBPROGRAM, DW_TAG_subprogram, TRUE,
661 subprogram_attr, G_N_ELEMENTS (subprogram_attr));
662 emit_dwarf_abbrev (w, ABBREV_PARAM, DW_TAG_formal_parameter, FALSE,
663 param_attr, G_N_ELEMENTS (param_attr));
664 emit_dwarf_abbrev (w, ABBREV_PARAM_LOCLIST, DW_TAG_formal_parameter, FALSE,
665 param_loclist_attr, G_N_ELEMENTS (param_loclist_attr));
666 emit_dwarf_abbrev (w, ABBREV_BASE_TYPE, DW_TAG_base_type, FALSE,
667 base_type_attr, G_N_ELEMENTS (base_type_attr));
668 emit_dwarf_abbrev (w, ABBREV_STRUCT_TYPE, DW_TAG_class_type, TRUE,
669 struct_type_attr, G_N_ELEMENTS (struct_type_attr));
670 emit_dwarf_abbrev (w, ABBREV_DATA_MEMBER, DW_TAG_member, FALSE,
671 data_member_attr, G_N_ELEMENTS (data_member_attr));
672 emit_dwarf_abbrev (w, ABBREV_TYPEDEF, DW_TAG_typedef, FALSE,
673 typedef_attr, G_N_ELEMENTS (typedef_attr));
674 emit_dwarf_abbrev (w, ABBREV_ENUM_TYPE, DW_TAG_enumeration_type, TRUE,
675 enum_type_attr, G_N_ELEMENTS (enum_type_attr));
676 emit_dwarf_abbrev (w, ABBREV_ENUMERATOR, DW_TAG_enumerator, FALSE,
677 enumerator_attr, G_N_ELEMENTS (enumerator_attr));
678 emit_dwarf_abbrev (w, ABBREV_NAMESPACE, DW_TAG_namespace, TRUE,
679 namespace_attr, G_N_ELEMENTS (namespace_attr));
680 emit_dwarf_abbrev (w, ABBREV_VARIABLE, DW_TAG_variable, FALSE,
681 variable_attr, G_N_ELEMENTS (variable_attr));
682 emit_dwarf_abbrev (w, ABBREV_VARIABLE_LOCLIST, DW_TAG_variable, FALSE,
683 variable_loclist_attr, G_N_ELEMENTS (variable_loclist_attr));
684 emit_dwarf_abbrev (w, ABBREV_POINTER_TYPE, DW_TAG_pointer_type, FALSE,
685 pointer_type_attr, G_N_ELEMENTS (pointer_type_attr));
686 emit_dwarf_abbrev (w, ABBREV_REFERENCE_TYPE, DW_TAG_reference_type, FALSE,
687 reference_type_attr, G_N_ELEMENTS (reference_type_attr));
688 emit_dwarf_abbrev (w, ABBREV_INHERITANCE, DW_TAG_inheritance, FALSE,
689 inheritance_attr, G_N_ELEMENTS (inheritance_attr));
692 emit_section_change (w, ".debug_info", 0);
693 emit_label (w, ".Ldebug_info_start");
694 emit_symbol_diff (w, ".Ldebug_info_end", ".", -4); /* length */
695 emit_int16 (w, 0x2); /* DWARF version 2 */
696 emit_int32 (w, 0); /* .debug_abbrev offset */
697 emit_byte (w, sizeof (gpointer)); /* address size */
699 if (img_writer_subsections_supported (w->w)) {
700 /* Emit this into a separate section so it gets placed at the end */
701 emit_section_change (w, ".debug_info", 1);
702 emit_int32 (w, 0); /* close everything */
703 emit_label (w, ".Ldebug_info_end");
704 emit_section_change (w, ".debug_info", 0);
707 /* Compilation unit */
708 emit_uleb128 (w, ABBREV_COMPILE_UNIT);
709 build_info = mono_get_runtime_build_info ();
710 s = g_strdup_printf ("Mono AOT Compiler %s", build_info);
714 emit_string (w, "JITted code");
716 emit_byte (w, DW_LANG_C);
717 emit_pointer_value (w, 0);
718 emit_pointer_value (w, 0);
719 /* offset into .debug_line section */
721 emit_symbol_diff (w, ".Ldebug_line_start", ".Ldebug_line_section_start", 0);
726 for (i = 0; i < G_N_ELEMENTS (basic_types); ++i) {
727 emit_label (w, basic_types [i].die_name);
728 emit_uleb128 (w, ABBREV_BASE_TYPE);
729 emit_byte (w, basic_types [i].size);
730 emit_byte (w, basic_types [i].encoding);
731 emit_string (w, basic_types [i].name);
734 emit_debug_info_end (w);
736 /* debug_loc section */
737 emit_section_change (w, ".debug_loc", 0);
738 emit_label (w, ".Ldebug_loc_start");
740 /* debug_line section */
742 emit_line_number_info_begin (w);
747 static const char* emit_type (MonoDwarfWriter *w, MonoType *t);
749 /* Returns the local symbol pointing to the emitted debug info */
751 emit_class_dwarf_info (MonoDwarfWriter *w, MonoClass *klass, gboolean vtype)
753 char *die, *pointer_die, *reference_die;
756 MonoClassField *field;
759 gboolean emit_namespace = FALSE;
763 if (!w->class_to_die)
764 w->class_to_die = g_hash_table_new (NULL, NULL);
765 if (!w->class_to_vtype_die)
766 w->class_to_vtype_die = g_hash_table_new (NULL, NULL);
767 if (!w->class_to_pointer_die)
768 w->class_to_pointer_die = g_hash_table_new (NULL, NULL);
769 if (!w->class_to_reference_die)
770 w->class_to_reference_die = g_hash_table_new (NULL, NULL);
773 cache = w->class_to_vtype_die;
775 cache = w->class_to_die;
777 die = g_hash_table_lookup (cache, klass);
781 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)))
785 * FIXME: gdb can't handle namespaces in languages it doesn't know about.
788 if (klass->name_space && klass->name_space [0] != '\0')
789 emit_namespace = TRUE;
791 if (emit_namespace) {
792 emit_uleb128 (w, ABBREV_NAMESPACE);
793 emit_string (w, klass->name_space);
796 full_name = g_strdup_printf ("%s%s%s", klass->name_space, klass->name_space ? "." : "", klass->name);
798 * gdb doesn't support namespaces for non-C++ dwarf objects, so use _
799 * to separate components.
801 for (p = full_name; *p; p ++)
805 die = g_strdup_printf (".LTDIE_%d", w->tdie_index);
806 pointer_die = g_strdup_printf (".LTDIE_%d_POINTER", w->tdie_index);
807 reference_die = g_strdup_printf (".LTDIE_%d_REFERENCE", w->tdie_index);
810 g_hash_table_insert (w->class_to_pointer_die, klass, pointer_die);
811 g_hash_table_insert (w->class_to_reference_die, klass, reference_die);
812 g_hash_table_insert (cache, klass, die);
814 if (klass->enumtype) {
815 int size = mono_class_value_size (mono_class_from_mono_type (mono_class_enum_basetype (klass)), NULL);
819 emit_uleb128 (w, ABBREV_ENUM_TYPE);
820 emit_string (w, full_name);
821 emit_uleb128 (w, size);
822 for (k = 0; k < G_N_ELEMENTS (basic_types); ++k)
823 if (basic_types [k].type == mono_class_enum_basetype (klass)->type)
825 g_assert (k < G_N_ELEMENTS (basic_types));
826 emit_symbol_diff (w, basic_types [k].die_name, ".Ldebug_info_start", 0);
828 /* Emit enum values */
830 while ((field = mono_class_get_fields (klass, &iter))) {
833 MonoTypeEnum def_type;
835 if (strcmp ("value__", mono_field_get_name (field)) == 0)
837 if (mono_field_is_deleted (field))
840 emit_uleb128 (w, ABBREV_ENUMERATOR);
841 emit_string (w, mono_field_get_name (field));
843 p = mono_class_get_field_default_value (field, &def_type);
844 len = mono_metadata_decode_blob_size (p, &p);
845 switch (mono_class_enum_basetype (klass)->type) {
848 case MONO_TYPE_BOOLEAN:
849 emit_sleb128 (w, *p);
854 emit_sleb128 (w, read16 (p));
858 emit_sleb128 (w, read32 (p));
862 emit_sleb128 (w, read64 (p));
866 #if SIZEOF_VOID_P == 8
867 emit_sleb128 (w, read64 (p));
869 emit_sleb128 (w, read32 (p));
873 g_assert_not_reached ();
882 parent_die = emit_class_dwarf_info (w, klass->parent, FALSE);
886 /* Emit field types */
888 while ((field = mono_class_get_fields (klass, &iter))) {
889 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
892 emit_type (w, field->type);
897 emit_uleb128 (w, ABBREV_STRUCT_TYPE);
898 emit_string (w, full_name);
899 emit_uleb128 (w, klass->instance_size);
902 emit_uleb128 (w, ABBREV_INHERITANCE);
903 emit_symbol_diff (w, parent_die, ".Ldebug_info_start", 0);
906 *p ++= DW_OP_plus_uconst;
907 encode_uleb128 (0, p, &p);
908 emit_byte (w, p - buf);
909 emit_bytes (w, buf, p - buf);
914 while ((field = mono_class_get_fields (klass, &iter))) {
915 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
918 fdie = emit_type (w, field->type);
920 emit_uleb128 (w, ABBREV_DATA_MEMBER);
921 emit_string (w, field->name);
922 emit_symbol_diff (w, fdie, ".Ldebug_info_start", 0);
925 *p ++= DW_OP_plus_uconst;
926 if (klass->valuetype && vtype)
927 encode_uleb128 (field->offset - sizeof (MonoObject), p, &p);
929 encode_uleb128 (field->offset, p, &p);
931 emit_byte (w, p - buf);
932 emit_bytes (w, buf, p - buf);
938 emit_uleb128 (w, 0x0);
940 /* Add a typedef, so we can reference the type without a 'struct' in gdb */
941 emit_uleb128 (w, ABBREV_TYPEDEF);
942 emit_string (w, full_name);
943 emit_symbol_diff (w, die, ".Ldebug_info_start", 0);
945 /* Add a pointer type */
946 emit_label (w, pointer_die);
948 emit_uleb128 (w, ABBREV_POINTER_TYPE);
949 emit_symbol_diff (w, die, ".Ldebug_info_start", 0);
951 /* Add a reference type */
952 emit_label (w, reference_die);
954 emit_uleb128 (w, ABBREV_REFERENCE_TYPE);
955 emit_symbol_diff (w, die, ".Ldebug_info_start", 0);
959 if (emit_namespace) {
961 emit_uleb128 (w, 0x0);
968 emit_type (MonoDwarfWriter *w, MonoType *t)
970 MonoClass *klass = mono_class_from_mono_type (t);
975 if (t->type == MONO_TYPE_VALUETYPE) {
976 tdie = emit_class_dwarf_info (w, klass, TRUE);
978 return g_hash_table_lookup (w->class_to_pointer_die, klass);
981 tdie = emit_class_dwarf_info (w, klass, FALSE);
982 /* Should return a pointer type to a reference */
985 t = &mono_defaults.int_class->byval_arg;
987 for (j = 0; j < G_N_ELEMENTS (basic_types); ++j)
988 if (basic_types [j].type == t->type)
990 if (j < G_N_ELEMENTS (basic_types))
991 tdie = basic_types [j].die_name;
994 case MONO_TYPE_CLASS:
995 emit_class_dwarf_info (w, klass, FALSE);
996 tdie = g_hash_table_lookup (w->class_to_reference_die, klass);
997 //tdie = ".LDIE_OBJECT";
999 case MONO_TYPE_ARRAY:
1000 tdie = ".LDIE_OBJECT";
1002 case MONO_TYPE_VALUETYPE:
1003 if (klass->enumtype)
1004 tdie = emit_class_dwarf_info (w, klass, FALSE);
1008 case MONO_TYPE_GENERICINST:
1009 if (!MONO_TYPE_ISSTRUCT (t)) {
1010 emit_class_dwarf_info (w, klass, FALSE);
1011 tdie = g_hash_table_lookup (w->class_to_reference_die, klass);
1026 emit_var_type (MonoDwarfWriter *w, MonoType *t)
1030 tdie = emit_type (w, t);
1032 emit_symbol_diff (w, tdie, ".Ldebug_info_start", 0);
1036 encode_var_location (MonoDwarfWriter *w, MonoInst *ins, guint8 *p, guint8 **endp)
1039 /* FIXME: This needs a location list, since the args can go from reg->stack */
1040 if (!ins || ins->flags & MONO_INST_IS_DEAD) {
1041 /* gdb treats this as optimized out */
1042 } else if (ins->opcode == OP_REGVAR) {
1043 *p = DW_OP_reg0 + mono_hw_reg_to_dwarf_reg (ins->dreg);
1045 } else if (ins->opcode == OP_REGOFFSET) {
1046 *p ++= DW_OP_breg0 + mono_hw_reg_to_dwarf_reg (ins->inst_basereg);
1047 encode_sleb128 (ins->inst_offset, p, &p);
1057 emit_loclist (MonoDwarfWriter *w, MonoInst *ins,
1058 guint8 *loclist_begin_addr, guint8 *loclist_end_addr,
1059 guint8 *expr, guint32 expr_len)
1063 emit_push_section (w, ".debug_loc", 0);
1064 sprintf (label, ".Lloclist_%d", w->loclist_index ++ );
1065 emit_label (w, label);
1067 emit_pointer_value (w, loclist_begin_addr);
1068 emit_pointer_value (w, loclist_end_addr);
1069 emit_byte (w, expr_len % 256);
1070 emit_byte (w, expr_len / 256);
1071 emit_bytes (w, expr, expr_len);
1073 emit_pointer_value (w, NULL);
1074 emit_pointer_value (w, NULL);
1076 emit_pop_section (w);
1077 emit_symbol_diff (w, label, ".Ldebug_loc_start", 0);
1081 * MonoDisHelper->tokener doesn't take an IP argument, and we can't add one since
1082 * it is a public header.
1084 static const guint8 *token_handler_ip;
1087 token_handler (MonoDisHelper *dh, MonoMethod *method, guint32 token)
1090 MonoMethod *cmethod;
1092 MonoClassField *field;
1093 gpointer data = NULL;
1095 if (method->wrapper_type)
1096 data = mono_method_get_wrapper_data (method, token);
1098 switch (*token_handler_ip) {
1102 if (method->wrapper_type)
1105 klass = mono_class_get_full (method->klass->image, token, NULL);
1106 res = g_strdup_printf ("<%s>", klass->name);
1111 if (method->wrapper_type)
1114 cmethod = mono_get_method_full (method->klass->image, token, NULL, NULL);
1115 desc = mono_method_full_name (cmethod, TRUE);
1116 res = g_strdup_printf ("<%s>", desc);
1120 if (method->wrapper_type) {
1121 desc = mono_signature_get_desc (data, FALSE);
1122 res = g_strdup_printf ("<%s>", desc);
1125 res = g_strdup_printf ("<0x%08x>", token);
1132 if (method->wrapper_type)
1135 field = mono_field_from_token (method->klass->image, token, &klass, NULL);
1136 desc = mono_field_full_name (field);
1137 res = g_strdup_printf ("<%s>", desc);
1141 res = g_strdup_printf ("<0x%08x>", token);
1151 * Produce a disassembled form of the IL instruction at IP. This is an extension
1152 * of mono_disasm_code_one () which can disasm tokens, handle wrapper methods, and
1153 * CEE_MONO_ opcodes.
1156 disasm_ins (MonoMethod *method, const guchar *ip, const guint8 **endip)
1160 MonoMethodHeader *header = mono_method_get_header (method);
1162 memset (&dh, 0, sizeof (dh));
1164 dh.label_format = "IL_%04x: ";
1165 dh.label_target = "IL_%04x";
1166 dh.tokener = token_handler;
1168 token_handler_ip = ip;
1169 if (*ip == MONO_CUSTOM_PREFIX) {
1174 case CEE_MONO_ICALL: {
1175 MonoJitICallInfo *info;
1177 token = read32 (ip + 2);
1178 data = mono_method_get_wrapper_data (method, token);
1179 info = mono_find_jit_icall_by_addr (data);
1182 dis = g_strdup_printf ("IL_%04x: mono_icall <%s>", (int)(ip - header->code), info->name);
1186 case CEE_MONO_CLASSCONST: {
1187 token = read32 (ip + 2);
1188 data = mono_method_get_wrapper_data (method, token);
1190 dis = g_strdup_printf ("IL_%04x: mono_classconst <%s>", (int)(ip - header->code), ((MonoClass*)data)->name);
1195 dis = mono_disasm_code_one (&dh, method, ip, &ip);
1198 dis = mono_disasm_code_one (&dh, method, ip, &ip);
1200 token_handler_ip = NULL;
1207 il_offset_from_address (MonoMethod *method, MonoDebugMethodJitInfo *jit,
1208 guint32 native_offset)
1212 if (!jit->line_numbers)
1215 for (i = jit->num_line_numbers - 1; i >= 0; i--) {
1216 MonoDebugLineNumberEntry lne = jit->line_numbers [i];
1218 if (lne.native_offset <= native_offset)
1219 return lne.il_offset;
1225 static int max_special_addr_diff = 0;
1228 emit_advance_op (MonoDwarfWriter *w, int line_diff, int addr_diff)
1232 /* Use a special opcode if possible */
1233 if (line_diff - LINE_BASE >= 0 && line_diff - LINE_BASE < LINE_RANGE) {
1234 if (max_special_addr_diff == 0)
1235 max_special_addr_diff = (255 - OPCODE_BASE) / LINE_RANGE;
1237 if (addr_diff > max_special_addr_diff && (addr_diff < 2 * max_special_addr_diff)) {
1238 emit_byte (w, DW_LNS_const_add_pc);
1239 addr_diff -= max_special_addr_diff;
1242 opcode = (line_diff - LINE_BASE) + (LINE_RANGE * addr_diff) + OPCODE_BASE;
1248 emit_byte (w, opcode);
1250 emit_byte (w, DW_LNS_advance_line);
1251 emit_sleb128 (w, line_diff);
1252 emit_byte (w, DW_LNS_advance_pc);
1253 emit_sleb128 (w, addr_diff);
1254 emit_byte (w, DW_LNS_copy);
1259 compare_lne (MonoDebugLineNumberEntry *a, MonoDebugLineNumberEntry *b)
1261 if (a->native_offset == b->native_offset)
1262 return a->il_offset - b->il_offset;
1264 return a->native_offset - b->native_offset;
1268 emit_line_number_info (MonoDwarfWriter *w, MonoMethod *method,
1269 char *start_symbol, char *end_symbol,
1270 guint8 *code, guint32 code_size,
1271 MonoDebugMethodJitInfo *debug_info)
1273 guint32 prev_line = 0;
1274 guint32 prev_native_offset = 0;
1275 int i, file_index, il_offset, prev_il_offset;
1276 gboolean first = TRUE;
1277 MonoDebugSourceLocation *loc;
1278 char *prev_file_name = NULL;
1279 MonoMethodHeader *header = mono_method_get_header (method);
1280 MonoDebugMethodInfo *minfo;
1282 int *native_to_il_offset = NULL;
1287 minfo = mono_debug_lookup_method (method);
1289 /* Compute the native->IL offset mapping */
1291 g_assert (code_size);
1293 #ifndef _EGLIB_MAJOR
1294 ln_array = g_array_sized_new (FALSE, FALSE, sizeof (MonoDebugLineNumberEntry),
1295 debug_info->num_line_numbers);
1296 g_array_append_vals (ln_array, debug_info->line_numbers, debug_info->num_line_numbers);
1297 g_array_sort (ln_array, (GCompareFunc)compare_lne);
1298 native_to_il_offset = g_new0 (int, code_size + 1);
1300 for (i = 0; i < debug_info->num_line_numbers; ++i) {
1302 MonoDebugLineNumberEntry lne = g_array_index (ln_array, MonoDebugLineNumberEntry, i);
1305 for (j = 0; j < lne.native_offset; ++j)
1306 native_to_il_offset [j] = -1;
1309 if (i < debug_info->num_line_numbers - 1) {
1310 MonoDebugLineNumberEntry lne_next = g_array_index (ln_array, MonoDebugLineNumberEntry, i + 1);
1312 for (j = lne.native_offset; j < lne_next.native_offset; ++j)
1313 native_to_il_offset [j] = lne.il_offset;
1315 for (j = lne.native_offset; j < code_size; ++j)
1316 native_to_il_offset [j] = lne.il_offset;
1319 g_array_free (ln_array, TRUE);
1323 prev_il_offset = -1;
1325 for (i = 0; i < code_size; ++i) {
1329 if (!debug_info->line_numbers)
1332 if (native_to_il_offset)
1333 il_offset = native_to_il_offset [i];
1335 il_offset = il_offset_from_address (method, debug_info, i);
1337 il_offset = il_offset_from_address (method, debug_info, i);
1339 g_assert (il_offset == native_to_il_offset [i]);
1342 il_offset = native_to_il_offset [i];
1346 if (il_offset == prev_il_offset)
1349 prev_il_offset = il_offset;
1351 loc = mono_debug_symfile_lookup_location (minfo, il_offset);
1354 int line_diff = (gint32)loc->row - (gint32)prev_line;
1355 int addr_diff = i - prev_native_offset;
1358 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
1361 emit_byte (w, sizeof (gpointer) + 1);
1362 emit_byte (w, DW_LNE_set_address);
1364 emit_pointer_unaligned (w, start_symbol);
1366 emit_pointer_value (w, code);
1369 * The prolog+initlocals region does not have a line number, this
1370 * makes them belong to the first line of the method.
1372 emit_byte (w, DW_LNS_advance_line);
1373 emit_sleb128 (w, (gint32)loc->row - (gint32)prev_line);
1374 prev_line = loc->row;
1377 if (loc->row != prev_line) {
1378 if (!prev_file_name || strcmp (loc->source_file, prev_file_name) != 0) {
1379 /* Add an entry to the file table */
1380 /* FIXME: Avoid duplicates */
1381 file_index = emit_line_number_file_name (w, loc->source_file, 0, 0);
1382 g_free (prev_file_name);
1383 prev_file_name = g_strdup (loc->source_file);
1385 emit_byte (w, DW_LNS_set_file);
1386 emit_uleb128 (w, file_index);
1387 emit_byte (w, DW_LNS_copy);
1390 //printf ("X: %p(+0x%x) %d %s:%d(+%d)\n", code + i, addr_diff, loc->il_offset, loc->source_file, loc->row, line_diff);
1392 emit_advance_op (w, line_diff, addr_diff);
1394 prev_line = loc->row;
1395 prev_native_offset = i;
1403 g_free (prev_file_name);
1406 emit_byte (w, DW_LNS_advance_pc);
1407 emit_sleb128 (w, code_size - prev_native_offset);
1408 emit_byte (w, DW_LNS_copy);
1412 emit_byte (w, DW_LNE_end_sequence);
1413 } else if (!start_symbol) {
1414 /* No debug info, XDEBUG mode */
1416 const guint8 *ip = header->code;
1417 int prev_line, prev_native_offset;
1421 * Emit the IL code into a temporary file and emit line number info
1422 * referencing that file.
1425 name = mono_method_full_name (method, TRUE);
1426 fprintf (w->il_file, "// %s\n", name);
1427 w->il_file_line_index ++;
1430 il_to_line = g_new0 (int, header->code_size);
1432 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
1434 emit_byte (w, sizeof (gpointer) + 1);
1435 emit_byte (w, DW_LNE_set_address);
1436 emit_pointer_value (w, code);
1438 // FIXME: Optimize this
1439 while (ip < header->code + header->code_size) {
1440 int il_offset = ip - header->code;
1443 w->il_file_line_index ++;
1445 dis = disasm_ins (method, ip, &ip);
1446 fprintf (w->il_file, "%s\n", dis);
1449 il_to_line [il_offset] = w->il_file_line_index;
1452 /* Emit line number info */
1454 prev_native_offset = 0;
1455 for (i = 0; i < debug_info->num_line_numbers; ++i) {
1456 MonoDebugLineNumberEntry *lne = &debug_info->line_numbers [i];
1459 if (lne->il_offset >= header->code_size)
1461 line = il_to_line [lne->il_offset];
1464 * This seems to happen randomly, it looks like il_offset points
1465 * into the middle of an instruction.
1469 printf ("%s\n", mono_method_full_name (method, TRUE));
1470 printf ("%d %d\n", lne->il_offset, header->code_size);
1475 if (line - prev_line != 0) {
1476 emit_advance_op (w, line - prev_line, (gint32)lne->native_offset - prev_native_offset);
1479 prev_native_offset = lne->native_offset;
1483 emit_byte (w, DW_LNS_advance_pc);
1484 emit_sleb128 (w, code_size - prev_native_offset);
1485 emit_byte (w, DW_LNS_copy);
1489 emit_byte (w, DW_LNE_end_sequence);
1491 fflush (w->il_file);
1492 g_free (il_to_line);
1496 static MonoMethodVar*
1497 find_vmv (MonoCompile *cfg, MonoInst *ins)
1502 for (j = 0; j < cfg->num_varinfo; ++j) {
1503 if (cfg->varinfo [j] == ins)
1507 if (j < cfg->num_varinfo) {
1508 return MONO_VARINFO (cfg, j);
1516 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)
1519 MonoMethodSignature *sig;
1520 MonoMethodHeader *header;
1521 char **names, **tdies, **local_tdies;
1528 emit_section_change (w, ".debug_info", 0);
1530 sig = mono_method_signature (method);
1531 header = mono_method_get_header (method);
1533 /* Parameter types */
1534 tdies = g_new0 (char *, sig->param_count + sig->hasthis);
1535 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
1538 if (i == 0 && sig->hasthis) {
1539 if (method->klass->valuetype)
1540 t = &method->klass->this_arg;
1542 t = &method->klass->byval_arg;
1544 t = sig->params [i - sig->hasthis];
1551 local_tdies = g_new0 (char *, header->num_locals);
1552 for (i = 0; i < header->num_locals; ++i) {
1553 emit_type (w, header->locals [i]);
1557 names = g_new0 (char *, sig->param_count);
1558 mono_method_get_param_names (method, (const char **) names);
1560 emit_uleb128 (w, ABBREV_SUBPROGRAM);
1561 name = mono_method_full_name (method, FALSE);
1562 emit_string (w, name);
1565 emit_pointer_unaligned (w, start_symbol);
1566 emit_pointer_unaligned (w, end_symbol);
1568 emit_pointer_value (w, code);
1569 emit_pointer_value (w, code + code_size);
1573 emit_byte (w, DW_OP_breg6);
1577 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
1578 MonoInst *arg = args ? args [i] : NULL;
1581 char pname_buf [128];
1582 MonoMethodVar *vmv = NULL;
1583 gboolean need_loclist = FALSE;
1585 vmv = find_vmv (cfg, arg);
1586 if (code && vmv && (vmv->live_range_start || vmv->live_range_end))
1587 need_loclist = TRUE;
1589 if (i == 0 && sig->hasthis) {
1590 if (method->klass->valuetype)
1591 t = &method->klass->this_arg;
1593 t = &method->klass->byval_arg;
1596 t = sig->params [i - sig->hasthis];
1597 pname = names [i - sig->hasthis];
1600 emit_uleb128 (w, need_loclist ? ABBREV_PARAM_LOCLIST : ABBREV_PARAM);
1602 if (pname[0] == '\0') {
1603 sprintf (pname_buf, "param%d", i - sig->hasthis);
1606 emit_string (w, pname);
1608 if (!arg || arg->flags & MONO_INST_IS_DEAD)
1609 emit_var_type (w, &mono_defaults.int32_class->byval_arg);
1611 emit_var_type (w, t);
1614 encode_var_location (w, arg, p, &p);
1616 vmv->live_range_start = 0;
1617 if (vmv->live_range_end == 0)
1618 /* FIXME: Uses made in calls are not recorded */
1619 vmv->live_range_end = code_size;
1620 emit_loclist (w, arg, code + vmv->live_range_start, code + vmv->live_range_end, buf, p - buf);
1622 emit_byte (w, p - buf);
1623 emit_bytes (w, buf, p - buf);
1629 num_locals = mono_debug_lookup_locals (method, &local_names, &local_indexes);
1631 for (i = 0; i < header->num_locals; ++i) {
1632 MonoInst *ins = locals [i];
1633 char name_buf [128];
1635 MonoMethodVar *vmv = NULL;
1636 gboolean need_loclist = FALSE;
1638 /* ins->dreg no longer contains the original vreg */
1639 vmv = find_vmv (cfg, ins);
1641 if (vmv->live_range_start) {
1642 /* This variable has a precise live range */
1643 need_loclist = TRUE;
1647 emit_uleb128 (w, need_loclist ? ABBREV_VARIABLE_LOCLIST : ABBREV_VARIABLE);
1649 for (j = 0; j < num_locals; ++j)
1650 if (local_indexes [j] == i)
1652 if (j < num_locals) {
1653 emit_string (w, local_names [j]);
1655 sprintf (name_buf, "V_%d", i);
1656 emit_string (w, name_buf);
1659 if (!ins || ins->flags & MONO_INST_IS_DEAD)
1660 emit_var_type (w, &mono_defaults.int32_class->byval_arg);
1662 emit_var_type (w, header->locals [i]);
1665 encode_var_location (w, ins, p, &p);
1668 if (vmv->live_range_end == 0)
1669 /* FIXME: Uses made in calls are not recorded */
1670 vmv->live_range_end = code_size;
1671 emit_loclist (w, ins, code + vmv->live_range_start, code + vmv->live_range_end, buf, p - buf);
1673 emit_byte (w, p - buf);
1674 emit_bytes (w, buf, p - buf);
1678 g_free (local_names);
1679 g_free (local_indexes);
1681 /* Subprogram end */
1682 emit_uleb128 (w, 0x0);
1686 emit_debug_info_end (w);
1688 /* Emit unwind info */
1690 emit_fde (w, w->fde_index, start_symbol, end_symbol, code, code_size, unwind_info, TRUE);
1694 /* Emit line number info */
1695 /* != could happen when using --regression */
1696 if (debug_info && (debug_info->code_start == code))
1697 emit_line_number_info (w, method, start_symbol, end_symbol, code, code_size, debug_info);
1703 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)
1705 emit_section_change (w, ".debug_info", 0);
1708 emit_uleb128 (w, ABBREV_SUBPROGRAM);
1709 emit_string (w, tramp_name);
1710 emit_pointer_value (w, code);
1711 emit_pointer_value (w, code + code_size);
1714 emit_byte (w, DW_OP_breg6);
1717 /* Subprogram end */
1718 emit_uleb128 (w, 0x0);
1720 emit_debug_info_end (w);
1722 /* Emit unwind info */
1723 emit_fde (w, w->fde_index, start_symbol, end_symbol, code, code_size, unwind_info, FALSE);
1726 #endif /* End of: !defined(DISABLE_AOT) && !defined(DISABLE_JIT) */