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;
46 * mono_dwarf_writer_create:
48 * Create a DWARF writer object. WRITER is the underlying image writer this
49 * writer will emit to. IL_FILE is the file where IL code will be dumped to for
50 * methods which have no line number info. It can be NULL.
53 mono_dwarf_writer_create (MonoImageWriter *writer, FILE *il_file)
55 MonoDwarfWriter *w = g_new0 (MonoDwarfWriter, 1);
64 mono_dwarf_writer_destroy (MonoDwarfWriter *w)
69 /* Wrappers around the image writer functions */
72 emit_section_change (MonoDwarfWriter *w, const char *section_name, int subsection_index)
74 img_writer_emit_section_change (w->w, section_name, subsection_index);
78 emit_push_section (MonoDwarfWriter *w, const char *section_name, int subsection)
80 img_writer_emit_push_section (w->w, section_name, subsection);
84 emit_pop_section (MonoDwarfWriter *w)
86 img_writer_emit_pop_section (w->w);
90 emit_local_symbol (MonoDwarfWriter *w, const char *name, const char *end_label, gboolean func)
92 img_writer_emit_local_symbol (w->w, name, end_label, func);
96 emit_label (MonoDwarfWriter *w, const char *name)
98 img_writer_emit_label (w->w, name);
102 emit_bytes (MonoDwarfWriter *w, const guint8* buf, int size)
104 img_writer_emit_bytes (w->w, buf, size);
108 emit_string (MonoDwarfWriter *w, const char *value)
110 img_writer_emit_string (w->w, value);
114 emit_line (MonoDwarfWriter *w)
116 img_writer_emit_line (w->w);
120 emit_alignment (MonoDwarfWriter *w, int size)
122 img_writer_emit_alignment (w->w, size);
126 emit_pointer_unaligned (MonoDwarfWriter *w, const char *target)
128 img_writer_emit_pointer_unaligned (w->w, target);
132 emit_pointer (MonoDwarfWriter *w, const char *target)
134 img_writer_emit_pointer (w->w, target);
138 emit_int16 (MonoDwarfWriter *w, int value)
140 img_writer_emit_int16 (w->w, value);
144 emit_int32 (MonoDwarfWriter *w, int value)
146 img_writer_emit_int32 (w->w, value);
150 emit_symbol_diff (MonoDwarfWriter *w, const char *end, const char* start, int offset)
152 img_writer_emit_symbol_diff (w->w, end, start, offset);
156 emit_zero_bytes (MonoDwarfWriter *w, int num)
158 img_writer_emit_zero_bytes (w->w, num);
162 emit_byte (MonoDwarfWriter *w, guint8 val)
164 img_writer_emit_byte (w->w, val);
167 static G_GNUC_UNUSED void
168 emit_uleb128 (MonoDwarfWriter *w, guint32 value)
171 guint8 b = value & 0x7f;
173 if (value != 0) /* more bytes to come */
179 static G_GNUC_UNUSED void
180 emit_sleb128 (MonoDwarfWriter *w, gint64 value)
183 gboolean negative = (value < 0);
190 /* the following is unnecessary if the
191 * implementation of >>= uses an arithmetic rather
192 * than logical shift for a signed left operand
196 value |= - ((gint64)1 <<(size - 7));
197 /* sign bit of byte is second high order bit (0x40) */
198 if ((value == 0 && !(byte & 0x40)) ||
199 (value == -1 && (byte & 0x40)))
207 static G_GNUC_UNUSED void
208 encode_uleb128 (guint32 value, guint8 *buf, guint8 **endbuf)
213 guint8 b = value & 0x7f;
215 if (value != 0) /* more bytes to come */
223 static G_GNUC_UNUSED void
224 encode_sleb128 (gint32 value, guint8 *buf, guint8 **endbuf)
227 gboolean negative = (value < 0);
235 /* the following is unnecessary if the
236 * implementation of >>= uses an arithmetic rather
237 * than logical shift for a signed left operand
241 value |= - (1 <<(size - 7));
242 /* sign bit of byte is second high order bit (0x40) */
243 if ((value == 0 && !(byte & 0x40)) ||
244 (value == -1 && (byte & 0x40)))
255 emit_dwarf_abbrev (MonoDwarfWriter *w, int code, int tag, gboolean has_child,
256 int *attrs, int attrs_len)
260 emit_uleb128 (w, code);
261 emit_uleb128 (w, tag);
262 emit_byte (w, has_child);
264 for (i = 0; i < attrs_len; i++)
265 emit_uleb128 (w, attrs [i]);
271 emit_cie (MonoDwarfWriter *w)
273 emit_section_change (w, ".debug_frame", 0);
275 emit_alignment (w, 8);
278 emit_symbol_diff (w, ".Lcie0_end", ".", -4); /* length */
279 emit_int32 (w, 0xffffffff); /* CIE id */
280 emit_byte (w, 3); /* version */
281 emit_string (w, ""); /* augmention */
282 emit_sleb128 (w, 1); /* code alignment factor */
283 emit_sleb128 (w, mono_unwind_get_dwarf_data_align ()); /* data alignment factor */
284 emit_uleb128 (w, mono_unwind_get_dwarf_pc_reg ());
286 w->cie_program = w->cie_program;
287 if (w->cie_program) {
289 guint8 *uw_info = mono_unwind_ops_encode (w->cie_program, &uw_info_len);
290 emit_bytes (w, uw_info, uw_info_len);
294 emit_alignment (w, sizeof (gpointer));
295 emit_label (w, ".Lcie0_end");
299 emit_pointer_value (MonoDwarfWriter *w, gpointer ptr)
301 gssize val = (gssize)ptr;
302 emit_bytes (w, (guint8*)&val, sizeof (gpointer));
306 emit_fde (MonoDwarfWriter *w, int fde_index, char *start_symbol, char *end_symbol,
307 guint8 *code, guint32 code_size, GSList *unwind_ops, gboolean use_cie)
314 emit_section_change (w, ".debug_frame", 0);
316 sprintf (symbol, ".Lfde%d_end", fde_index);
317 emit_symbol_diff (w, symbol, ".", -4); /* length */
318 emit_int32 (w, 0); /* CIE_pointer */
320 emit_pointer (w, start_symbol); /* initial_location */
322 emit_symbol_diff (w, end_symbol, start_symbol, 0); /* address_range */
324 g_assert (code_size);
325 emit_int32 (w, code_size);
328 emit_pointer_value (w, code);
329 emit_int32 (w, code_size);
331 #if SIZEOF_VOID_P == 8
332 /* Upper 32 bits of code size */
337 if (w->cie_program) {
338 // FIXME: Check that the ops really begin with the CIE program */
341 for (i = 0; i < g_slist_length (w->cie_program); ++i)
345 /* Convert the list of MonoUnwindOps to the format used by DWARF */
346 uw_info = mono_unwind_ops_encode (l, &uw_info_len);
347 emit_bytes (w, uw_info, uw_info_len);
350 emit_alignment (w, sizeof (gpointer));
351 sprintf (symbol, ".Lfde%d_end", fde_index);
352 emit_label (w, symbol);
356 #define ABBREV_COMPILE_UNIT 1
357 #define ABBREV_SUBPROGRAM 2
358 #define ABBREV_PARAM 3
359 #define ABBREV_BASE_TYPE 4
360 #define ABBREV_STRUCT_TYPE 5
361 #define ABBREV_DATA_MEMBER 6
362 #define ABBREV_TYPEDEF 7
363 #define ABBREV_ENUM_TYPE 8
364 #define ABBREV_ENUMERATOR 9
365 #define ABBREV_NAMESPACE 10
366 #define ABBREV_VARIABLE 11
367 #define ABBREV_VARIABLE_LOCLIST 12
368 #define ABBREV_POINTER_TYPE 13
369 #define ABBREV_REFERENCE_TYPE 14
370 #define ABBREV_PARAM_LOCLIST 15
371 #define ABBREV_INHERITANCE 16
373 static int compile_unit_attr [] = {
374 DW_AT_producer ,DW_FORM_string,
375 DW_AT_name ,DW_FORM_string,
376 DW_AT_comp_dir ,DW_FORM_string,
377 DW_AT_language ,DW_FORM_data1,
378 DW_AT_low_pc ,DW_FORM_addr,
379 DW_AT_high_pc ,DW_FORM_addr,
380 DW_AT_stmt_list ,DW_FORM_data4
383 static int subprogram_attr [] = {
384 DW_AT_name , DW_FORM_string,
385 DW_AT_low_pc , DW_FORM_addr,
386 DW_AT_high_pc , DW_FORM_addr,
387 DW_AT_frame_base , DW_FORM_block1
390 static int param_attr [] = {
391 DW_AT_name, DW_FORM_string,
392 DW_AT_type, DW_FORM_ref4,
393 DW_AT_location, DW_FORM_block1
396 static int param_loclist_attr [] = {
397 DW_AT_name, DW_FORM_string,
398 DW_AT_type, DW_FORM_ref4,
399 DW_AT_location, DW_FORM_data4
402 static int base_type_attr [] = {
403 DW_AT_byte_size, DW_FORM_data1,
404 DW_AT_encoding, DW_FORM_data1,
405 DW_AT_name, DW_FORM_string
408 static int struct_type_attr [] = {
409 DW_AT_name, DW_FORM_string,
410 DW_AT_byte_size, DW_FORM_udata,
413 static int data_member_attr [] = {
414 DW_AT_name, DW_FORM_string,
415 DW_AT_type, DW_FORM_ref4,
416 DW_AT_data_member_location, DW_FORM_block1
419 static int typedef_attr [] = {
420 DW_AT_name, DW_FORM_string,
421 DW_AT_type, DW_FORM_ref4
424 static int pointer_type_attr [] = {
425 DW_AT_type, DW_FORM_ref4,
428 static int reference_type_attr [] = {
429 DW_AT_type, DW_FORM_ref4,
432 static int enum_type_attr [] = {
433 DW_AT_name, DW_FORM_string,
434 DW_AT_byte_size, DW_FORM_udata,
435 DW_AT_type, DW_FORM_ref4,
438 static int enumerator_attr [] = {
439 DW_AT_name, DW_FORM_string,
440 DW_AT_const_value, DW_FORM_sdata,
443 static int namespace_attr [] = {
444 DW_AT_name, DW_FORM_string,
447 static int variable_attr [] = {
448 DW_AT_name, DW_FORM_string,
449 DW_AT_type, DW_FORM_ref4,
450 DW_AT_location, DW_FORM_block1
453 static int variable_loclist_attr [] = {
454 DW_AT_name, DW_FORM_string,
455 DW_AT_type, DW_FORM_ref4,
456 DW_AT_location, DW_FORM_data4
459 static int inheritance_attr [] = {
460 DW_AT_type, DW_FORM_ref4,
461 DW_AT_data_member_location, DW_FORM_block1
464 typedef struct DwarfBasicType {
465 const char *die_name, *name;
471 static DwarfBasicType basic_types [] = {
472 { ".LDIE_I1", "sbyte", MONO_TYPE_I1, 1, DW_ATE_signed },
473 { ".LDIE_U1", "byte", MONO_TYPE_U1, 1, DW_ATE_unsigned },
474 { ".LDIE_I2", "short", MONO_TYPE_I2, 2, DW_ATE_signed },
475 { ".LDIE_U2", "ushort", MONO_TYPE_U2, 2, DW_ATE_unsigned },
476 { ".LDIE_I4", "int", MONO_TYPE_I4, 4, DW_ATE_signed },
477 { ".LDIE_U4", "uint", MONO_TYPE_U4, 4, DW_ATE_unsigned },
478 { ".LDIE_I8", "long", MONO_TYPE_I8, 8, DW_ATE_signed },
479 { ".LDIE_U8", "ulong", MONO_TYPE_U8, 8, DW_ATE_unsigned },
480 { ".LDIE_I", "intptr", MONO_TYPE_I, SIZEOF_VOID_P, DW_ATE_signed },
481 { ".LDIE_U", "uintptr", MONO_TYPE_U, SIZEOF_VOID_P, DW_ATE_unsigned },
482 { ".LDIE_R4", "float", MONO_TYPE_R4, 4, DW_ATE_float },
483 { ".LDIE_R8", "double", MONO_TYPE_R8, 8, DW_ATE_float },
484 { ".LDIE_BOOLEAN", "boolean", MONO_TYPE_BOOLEAN, 1, DW_ATE_boolean },
485 { ".LDIE_CHAR", "char", MONO_TYPE_CHAR, 2, DW_ATE_unsigned_char },
486 { ".LDIE_STRING", "string", MONO_TYPE_STRING, sizeof (gpointer), DW_ATE_address },
487 { ".LDIE_OBJECT", "object", MONO_TYPE_OBJECT, sizeof (gpointer), DW_ATE_address },
488 { ".LDIE_SZARRAY", "object", MONO_TYPE_SZARRAY, sizeof (gpointer), DW_ATE_address },
491 /* Constants for encoding line number special opcodes */
492 #define OPCODE_BASE 13
494 #define LINE_RANGE 14
496 /* Subsections of the .debug_line section */
497 #define LINE_SUBSECTION_HEADER 1
498 #define LINE_SUBSECTION_INCLUDES 2
499 #define LINE_SUBSECTION_FILES 3
500 #define LINE_SUBSECTION_DATA 4
501 #define LINE_SUBSECTION_END 5
504 emit_line_number_file_name (MonoDwarfWriter *w, const char *name,
505 gint64 last_mod_time, gint64 file_size)
509 char *basename = NULL;
511 if (!w->file_to_index)
512 w->file_to_index = g_hash_table_new (g_str_hash, g_str_equal);
514 index = GPOINTER_TO_UINT (g_hash_table_lookup (w->file_to_index, name));
518 if (g_path_is_absolute (name)) {
519 char *dir = g_path_get_dirname (name);
521 if (!w->dir_to_index)
522 w->dir_to_index = g_hash_table_new (g_str_hash, g_str_equal);
524 dir_index = GPOINTER_TO_UINT (g_hash_table_lookup (w->dir_to_index, dir));
525 if (dir_index == 0) {
526 emit_section_change (w, ".debug_line", LINE_SUBSECTION_INCLUDES);
527 emit_string (w, dir);
529 dir_index = ++ w->line_number_dir_index;
530 g_hash_table_insert (w->dir_to_index, g_strdup (dir), GUINT_TO_POINTER (dir_index));
535 basename = g_path_get_basename (name);
540 emit_section_change (w, ".debug_line", LINE_SUBSECTION_FILES);
543 emit_string (w, basename);
545 emit_string (w, name);
546 emit_uleb128 (w, dir_index);
550 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
555 index = ++ w->line_number_file_index;
556 g_hash_table_insert (w->file_to_index, g_strdup (name), GUINT_TO_POINTER (index));
562 emit_line_number_info_begin (MonoDwarfWriter *w)
565 /* FIXME: This doesn't seem to work with !xdebug */
566 emit_section_change (w, ".debug_line", 0);
567 emit_label (w, ".Ldebug_line_start");
568 emit_label (w, ".Ldebug_line_section_start");
572 /* Line number info header */
574 * GAS seems to emit its own data to the end of the first subsection, so we use
575 * subsections 1, 2 etc:
576 * 1 - contains the header
577 * 2 - contains the file names
578 * 3 - contains the end of the header + the data
581 emit_section_change (w, ".debug_line", 0);
582 emit_label (w, ".Ldebug_line_section_start");
583 emit_section_change (w, ".debug_line", LINE_SUBSECTION_HEADER);
584 emit_label (w, ".Ldebug_line_start");
585 emit_symbol_diff (w, ".Ldebug_line_end", ".", -4); /* length */
586 emit_int16 (w, 0x2); /* version */
587 emit_symbol_diff (w, ".Ldebug_line_header_end", ".", -4); /* header_length */
588 emit_byte (w, 1); /* minimum_instruction_length */
589 emit_byte (w, 1); /* default_is_stmt */
590 emit_byte (w, LINE_BASE); /* line_base */
591 emit_byte (w, LINE_RANGE); /* line_range */
592 emit_byte (w, OPCODE_BASE); /* opcode_base */
593 emit_byte (w, 0); /* standard_opcode_lengths */
607 emit_section_change (w, ".debug_line", LINE_SUBSECTION_INCLUDES);
609 /* End of Includes */
610 emit_section_change (w, ".debug_line", LINE_SUBSECTION_FILES);
614 emit_line_number_file_name (w, "xdb.il", 0, 0);
617 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
620 emit_label (w, ".Ldebug_line_header_end");
622 /* Emit this into a separate subsection so it gets placed at the end */
623 emit_section_change (w, ".debug_line", LINE_SUBSECTION_END);
627 emit_byte (w, DW_LNE_end_sequence);
629 emit_label (w, ".Ldebug_line_end");
633 mono_dwarf_writer_emit_base_info (MonoDwarfWriter *w, GSList *base_unwind_program)
635 char *s, *build_info;
638 w->cie_program = base_unwind_program;
640 emit_section_change (w, ".debug_abbrev", 0);
641 emit_dwarf_abbrev (w, ABBREV_COMPILE_UNIT, DW_TAG_compile_unit, TRUE,
642 compile_unit_attr, G_N_ELEMENTS (compile_unit_attr));
643 emit_dwarf_abbrev (w, ABBREV_SUBPROGRAM, DW_TAG_subprogram, TRUE,
644 subprogram_attr, G_N_ELEMENTS (subprogram_attr));
645 emit_dwarf_abbrev (w, ABBREV_PARAM, DW_TAG_formal_parameter, FALSE,
646 param_attr, G_N_ELEMENTS (param_attr));
647 emit_dwarf_abbrev (w, ABBREV_PARAM_LOCLIST, DW_TAG_formal_parameter, FALSE,
648 param_loclist_attr, G_N_ELEMENTS (param_loclist_attr));
649 emit_dwarf_abbrev (w, ABBREV_BASE_TYPE, DW_TAG_base_type, FALSE,
650 base_type_attr, G_N_ELEMENTS (base_type_attr));
651 emit_dwarf_abbrev (w, ABBREV_STRUCT_TYPE, DW_TAG_class_type, TRUE,
652 struct_type_attr, G_N_ELEMENTS (struct_type_attr));
653 emit_dwarf_abbrev (w, ABBREV_DATA_MEMBER, DW_TAG_member, FALSE,
654 data_member_attr, G_N_ELEMENTS (data_member_attr));
655 emit_dwarf_abbrev (w, ABBREV_TYPEDEF, DW_TAG_typedef, FALSE,
656 typedef_attr, G_N_ELEMENTS (typedef_attr));
657 emit_dwarf_abbrev (w, ABBREV_ENUM_TYPE, DW_TAG_enumeration_type, TRUE,
658 enum_type_attr, G_N_ELEMENTS (enum_type_attr));
659 emit_dwarf_abbrev (w, ABBREV_ENUMERATOR, DW_TAG_enumerator, FALSE,
660 enumerator_attr, G_N_ELEMENTS (enumerator_attr));
661 emit_dwarf_abbrev (w, ABBREV_NAMESPACE, DW_TAG_namespace, TRUE,
662 namespace_attr, G_N_ELEMENTS (namespace_attr));
663 emit_dwarf_abbrev (w, ABBREV_VARIABLE, DW_TAG_variable, FALSE,
664 variable_attr, G_N_ELEMENTS (variable_attr));
665 emit_dwarf_abbrev (w, ABBREV_VARIABLE_LOCLIST, DW_TAG_variable, FALSE,
666 variable_loclist_attr, G_N_ELEMENTS (variable_loclist_attr));
667 emit_dwarf_abbrev (w, ABBREV_POINTER_TYPE, DW_TAG_pointer_type, FALSE,
668 pointer_type_attr, G_N_ELEMENTS (pointer_type_attr));
669 emit_dwarf_abbrev (w, ABBREV_REFERENCE_TYPE, DW_TAG_reference_type, FALSE,
670 reference_type_attr, G_N_ELEMENTS (reference_type_attr));
671 emit_dwarf_abbrev (w, ABBREV_INHERITANCE, DW_TAG_inheritance, FALSE,
672 inheritance_attr, G_N_ELEMENTS (inheritance_attr));
675 emit_section_change (w, ".debug_info", 0);
676 emit_label (w, ".Ldebug_info_start");
677 emit_symbol_diff (w, ".Ldebug_info_end", ".", -4); /* length */
678 emit_int16 (w, 0x2); /* DWARF version 2 */
679 emit_int32 (w, 0); /* .debug_abbrev offset */
680 emit_byte (w, sizeof (gpointer)); /* address size */
682 /* Emit this into a separate section so it gets placed at the end */
683 emit_section_change (w, ".debug_info", 1);
684 emit_int32 (w, 0); /* close everything */
685 emit_label (w, ".Ldebug_info_end");
686 emit_section_change (w, ".debug_info", 0);
688 /* Compilation unit */
689 emit_uleb128 (w, ABBREV_COMPILE_UNIT);
690 build_info = mono_get_runtime_build_info ();
691 s = g_strdup_printf ("Mono AOT Compiler %s", build_info);
695 emit_string (w, "JITted code");
697 emit_byte (w, DW_LANG_C);
698 emit_pointer_value (w, 0);
699 emit_pointer_value (w, 0);
700 /* offset into .debug_line section */
701 emit_symbol_diff (w, ".Ldebug_line_start", ".Ldebug_line_section_start", 0);
704 for (i = 0; i < G_N_ELEMENTS (basic_types); ++i) {
705 emit_label (w, basic_types [i].die_name);
706 emit_uleb128 (w, ABBREV_BASE_TYPE);
707 emit_byte (w, basic_types [i].size);
708 emit_byte (w, basic_types [i].encoding);
709 emit_string (w, basic_types [i].name);
712 /* debug_loc section */
713 emit_section_change (w, ".debug_loc", 0);
714 emit_label (w, ".Ldebug_loc_start");
716 /* debug_line section */
717 emit_line_number_info_begin (w);
722 static const char* emit_type (MonoDwarfWriter *w, MonoType *t);
724 /* Returns the local symbol pointing to the emitted debug info */
726 emit_class_dwarf_info (MonoDwarfWriter *w, MonoClass *klass, gboolean vtype)
728 char *die, *pointer_die, *reference_die;
731 MonoClassField *field;
734 gboolean emit_namespace = FALSE;
738 if (!w->class_to_die)
739 w->class_to_die = g_hash_table_new (NULL, NULL);
740 if (!w->class_to_vtype_die)
741 w->class_to_vtype_die = g_hash_table_new (NULL, NULL);
742 if (!w->class_to_pointer_die)
743 w->class_to_pointer_die = g_hash_table_new (NULL, NULL);
744 if (!w->class_to_reference_die)
745 w->class_to_reference_die = g_hash_table_new (NULL, NULL);
748 cache = w->class_to_vtype_die;
750 cache = w->class_to_die;
752 die = g_hash_table_lookup (cache, klass);
756 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)))
760 * FIXME: gdb can't handle namespaces in languages it doesn't know about.
763 if (klass->name_space && klass->name_space [0] != '\0')
764 emit_namespace = TRUE;
766 if (emit_namespace) {
767 emit_uleb128 (w, ABBREV_NAMESPACE);
768 emit_string (w, klass->name_space);
771 full_name = g_strdup_printf ("%s%s%s", klass->name_space, klass->name_space ? "." : "", klass->name);
773 * gdb doesn't support namespaces for non-C++ dwarf objects, so use _
774 * to separate components.
776 for (p = full_name; *p; p ++)
780 die = g_strdup_printf (".LTDIE_%d", w->tdie_index);
781 pointer_die = g_strdup_printf (".LTDIE_%d_POINTER", w->tdie_index);
782 reference_die = g_strdup_printf (".LTDIE_%d_REFERENCE", w->tdie_index);
785 g_hash_table_insert (w->class_to_pointer_die, klass, pointer_die);
786 g_hash_table_insert (w->class_to_reference_die, klass, reference_die);
787 g_hash_table_insert (cache, klass, die);
789 if (klass->enumtype) {
790 int size = mono_class_value_size (mono_class_from_mono_type (mono_class_enum_basetype (klass)), NULL);
794 emit_uleb128 (w, ABBREV_ENUM_TYPE);
795 emit_string (w, full_name);
796 emit_uleb128 (w, size);
797 for (k = 0; k < G_N_ELEMENTS (basic_types); ++k)
798 if (basic_types [k].type == mono_class_enum_basetype (klass)->type)
800 g_assert (k < G_N_ELEMENTS (basic_types));
801 emit_symbol_diff (w, basic_types [k].die_name, ".Ldebug_info_start", 0);
803 /* Emit enum values */
805 while ((field = mono_class_get_fields (klass, &iter))) {
808 MonoTypeEnum def_type;
810 if (strcmp ("value__", mono_field_get_name (field)) == 0)
812 if (mono_field_is_deleted (field))
815 emit_uleb128 (w, ABBREV_ENUMERATOR);
816 emit_string (w, mono_field_get_name (field));
818 p = mono_class_get_field_default_value (field, &def_type);
819 len = mono_metadata_decode_blob_size (p, &p);
820 switch (mono_class_enum_basetype (klass)->type) {
823 case MONO_TYPE_BOOLEAN:
824 emit_sleb128 (w, *p);
829 emit_sleb128 (w, read16 (p));
833 emit_sleb128 (w, read32 (p));
837 emit_sleb128 (w, read64 (p));
841 #if SIZEOF_VOID_P == 8
842 emit_sleb128 (w, read64 (p));
844 emit_sleb128 (w, read32 (p));
848 g_assert_not_reached ();
857 parent_die = emit_class_dwarf_info (w, klass->parent, FALSE);
861 /* Emit field types */
863 while ((field = mono_class_get_fields (klass, &iter))) {
864 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
867 emit_type (w, field->type);
872 emit_uleb128 (w, ABBREV_STRUCT_TYPE);
873 emit_string (w, full_name);
874 emit_uleb128 (w, klass->instance_size);
877 emit_uleb128 (w, ABBREV_INHERITANCE);
878 emit_symbol_diff (w, parent_die, ".Ldebug_info_start", 0);
881 *p ++= DW_OP_plus_uconst;
882 encode_uleb128 (0, p, &p);
883 emit_byte (w, p - buf);
884 emit_bytes (w, buf, p - buf);
889 while ((field = mono_class_get_fields (klass, &iter))) {
890 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
893 fdie = emit_type (w, field->type);
895 emit_uleb128 (w, ABBREV_DATA_MEMBER);
896 emit_string (w, field->name);
897 emit_symbol_diff (w, fdie, ".Ldebug_info_start", 0);
900 *p ++= DW_OP_plus_uconst;
901 if (klass->valuetype && vtype)
902 encode_uleb128 (field->offset - sizeof (MonoObject), p, &p);
904 encode_uleb128 (field->offset, p, &p);
906 emit_byte (w, p - buf);
907 emit_bytes (w, buf, p - buf);
913 emit_uleb128 (w, 0x0);
915 /* Add a typedef, so we can reference the type without a 'struct' in gdb */
916 emit_uleb128 (w, ABBREV_TYPEDEF);
917 emit_string (w, full_name);
918 emit_symbol_diff (w, die, ".Ldebug_info_start", 0);
920 /* Add a pointer type */
921 emit_label (w, pointer_die);
923 emit_uleb128 (w, ABBREV_POINTER_TYPE);
924 emit_symbol_diff (w, die, ".Ldebug_info_start", 0);
926 /* Add a reference type */
927 emit_label (w, reference_die);
929 emit_uleb128 (w, ABBREV_REFERENCE_TYPE);
930 emit_symbol_diff (w, die, ".Ldebug_info_start", 0);
934 if (emit_namespace) {
936 emit_uleb128 (w, 0x0);
943 emit_type (MonoDwarfWriter *w, MonoType *t)
945 MonoClass *klass = mono_class_from_mono_type (t);
950 if (t->type == MONO_TYPE_VALUETYPE) {
951 tdie = emit_class_dwarf_info (w, klass, TRUE);
953 return g_hash_table_lookup (w->class_to_pointer_die, klass);
956 tdie = emit_class_dwarf_info (w, klass, FALSE);
957 /* Should return a pointer type to a reference */
960 t = &mono_defaults.int_class->byval_arg;
962 for (j = 0; j < G_N_ELEMENTS (basic_types); ++j)
963 if (basic_types [j].type == t->type)
965 if (j < G_N_ELEMENTS (basic_types))
966 tdie = basic_types [j].die_name;
969 case MONO_TYPE_CLASS:
970 emit_class_dwarf_info (w, klass, FALSE);
971 tdie = g_hash_table_lookup (w->class_to_reference_die, klass);
972 //tdie = ".LDIE_OBJECT";
974 case MONO_TYPE_ARRAY:
975 tdie = ".LDIE_OBJECT";
977 case MONO_TYPE_VALUETYPE:
979 tdie = emit_class_dwarf_info (w, klass, FALSE);
983 case MONO_TYPE_GENERICINST:
984 if (!MONO_TYPE_ISSTRUCT (t)) {
985 emit_class_dwarf_info (w, klass, FALSE);
986 tdie = g_hash_table_lookup (w->class_to_reference_die, klass);
1001 emit_var_type (MonoDwarfWriter *w, MonoType *t)
1005 tdie = emit_type (w, t);
1007 emit_symbol_diff (w, tdie, ".Ldebug_info_start", 0);
1011 encode_var_location (MonoDwarfWriter *w, MonoInst *ins, guint8 *p, guint8 **endp)
1014 /* FIXME: This needs a location list, since the args can go from reg->stack */
1015 if (!ins || ins->flags & MONO_INST_IS_DEAD) {
1016 /* gdb treats this as optimized out */
1017 } else if (ins->opcode == OP_REGVAR) {
1018 *p = DW_OP_reg0 + mono_hw_reg_to_dwarf_reg (ins->dreg);
1020 } else if (ins->opcode == OP_REGOFFSET) {
1021 *p ++= DW_OP_breg0 + mono_hw_reg_to_dwarf_reg (ins->inst_basereg);
1022 encode_sleb128 (ins->inst_offset, p, &p);
1032 emit_loclist (MonoDwarfWriter *w, MonoInst *ins,
1033 guint8 *loclist_begin_addr, guint8 *loclist_end_addr,
1034 guint8 *expr, guint32 expr_len)
1038 emit_push_section (w, ".debug_loc", 0);
1039 sprintf (label, ".Lloclist_%d", w->loclist_index ++ );
1040 emit_label (w, label);
1042 emit_pointer_value (w, loclist_begin_addr);
1043 emit_pointer_value (w, loclist_end_addr);
1044 emit_byte (w, expr_len % 256);
1045 emit_byte (w, expr_len / 256);
1046 emit_bytes (w, expr, expr_len);
1048 emit_pointer_value (w, NULL);
1049 emit_pointer_value (w, NULL);
1051 emit_pop_section (w);
1052 emit_symbol_diff (w, label, ".Ldebug_loc_start", 0);
1056 * MonoDisHelper->tokener doesn't take an IP argument, and we can't add one since
1057 * it is a public header.
1059 static const guint8 *token_handler_ip;
1062 token_handler (MonoDisHelper *dh, MonoMethod *method, guint32 token)
1065 MonoMethod *cmethod;
1067 MonoClassField *field;
1068 gpointer data = NULL;
1070 if (method->wrapper_type)
1071 data = mono_method_get_wrapper_data (method, token);
1073 switch (*token_handler_ip) {
1077 if (method->wrapper_type)
1080 klass = mono_class_get_full (method->klass->image, token, NULL);
1081 res = g_strdup_printf ("<%s>", klass->name);
1086 if (method->wrapper_type)
1089 cmethod = mono_get_method_full (method->klass->image, token, NULL, NULL);
1090 desc = mono_method_full_name (cmethod, TRUE);
1091 res = g_strdup_printf ("<%s>", desc);
1095 if (method->wrapper_type) {
1096 desc = mono_signature_get_desc (data, FALSE);
1097 res = g_strdup_printf ("<%s>", desc);
1100 res = g_strdup_printf ("<0x%08x>", token);
1107 if (method->wrapper_type)
1110 field = mono_field_from_token (method->klass->image, token, &klass, NULL);
1111 desc = mono_field_full_name (field);
1112 res = g_strdup_printf ("<%s>", desc);
1116 res = g_strdup_printf ("<0x%08x>", token);
1126 * Produce a disassembled form of the IL instruction at IP. This is an extension
1127 * of mono_disasm_code_one () which can disasm tokens, handle wrapper methods, and
1128 * CEE_MONO_ opcodes.
1131 disasm_ins (MonoMethod *method, const guchar *ip, const guint8 **endip)
1135 MonoMethodHeader *header = mono_method_get_header (method);
1137 memset (&dh, 0, sizeof (dh));
1139 dh.label_format = "IL_%04x: ";
1140 dh.label_target = "IL_%04x";
1141 dh.tokener = token_handler;
1143 token_handler_ip = ip;
1144 if (*ip == MONO_CUSTOM_PREFIX) {
1149 case CEE_MONO_ICALL: {
1150 MonoJitICallInfo *info;
1152 token = read32 (ip + 2);
1153 data = mono_method_get_wrapper_data (method, token);
1154 info = mono_find_jit_icall_by_addr (data);
1157 dis = g_strdup_printf ("IL_%04x: mono_icall <%s>", (int)(ip - header->code), info->name);
1161 case CEE_MONO_CLASSCONST: {
1162 token = read32 (ip + 2);
1163 data = mono_method_get_wrapper_data (method, token);
1165 dis = g_strdup_printf ("IL_%04x: mono_classconst <%s>", (int)(ip - header->code), ((MonoClass*)data)->name);
1170 dis = mono_disasm_code_one (&dh, method, ip, &ip);
1173 dis = mono_disasm_code_one (&dh, method, ip, &ip);
1175 token_handler_ip = NULL;
1182 il_offset_from_address (MonoMethod *method, MonoDebugMethodJitInfo *jit,
1183 guint32 native_offset)
1187 if (!jit->line_numbers)
1190 for (i = jit->num_line_numbers - 1; i >= 0; i--) {
1191 MonoDebugLineNumberEntry lne = jit->line_numbers [i];
1193 if (lne.native_offset <= native_offset)
1194 return lne.il_offset;
1200 static int max_special_addr_diff = 0;
1203 emit_advance_op (MonoDwarfWriter *w, int line_diff, int addr_diff)
1207 /* Use a special opcode if possible */
1208 if (line_diff - LINE_BASE >= 0 && line_diff - LINE_BASE < LINE_RANGE) {
1209 if (max_special_addr_diff == 0)
1210 max_special_addr_diff = (255 - OPCODE_BASE) / LINE_RANGE;
1212 if (addr_diff > max_special_addr_diff && (addr_diff < 2 * max_special_addr_diff)) {
1213 emit_byte (w, DW_LNS_const_add_pc);
1214 addr_diff -= max_special_addr_diff;
1217 opcode = (line_diff - LINE_BASE) + (LINE_RANGE * addr_diff) + OPCODE_BASE;
1223 emit_byte (w, opcode);
1225 emit_byte (w, DW_LNS_advance_line);
1226 emit_sleb128 (w, line_diff);
1227 emit_byte (w, DW_LNS_advance_pc);
1228 emit_sleb128 (w, addr_diff);
1229 emit_byte (w, DW_LNS_copy);
1234 compare_lne (MonoDebugLineNumberEntry *a, MonoDebugLineNumberEntry *b)
1236 if (a->native_offset == b->native_offset)
1237 return a->il_offset - b->il_offset;
1239 return a->native_offset - b->native_offset;
1243 emit_line_number_info (MonoDwarfWriter *w, MonoMethod *method, guint8 *code,
1244 guint32 code_size, MonoDebugMethodJitInfo *debug_info)
1246 guint32 prev_line = 0;
1247 guint32 prev_native_offset = 0;
1248 int i, file_index, il_offset, prev_il_offset;
1249 gboolean first = TRUE;
1250 MonoDebugSourceLocation *loc;
1251 char *prev_file_name = NULL;
1252 MonoMethodHeader *header = mono_method_get_header (method);
1253 MonoDebugMethodInfo *minfo;
1255 int *native_to_il_offset = NULL;
1258 // FIXME: The set_address op below only works with xdebug
1261 minfo = mono_debug_lookup_method (method);
1263 /* Compute the native->IL offset mapping */
1265 #ifndef _EGLIB_MAJOR
1266 ln_array = g_array_sized_new (FALSE, FALSE, sizeof (MonoDebugLineNumberEntry),
1267 debug_info->num_line_numbers);
1268 g_array_append_vals (ln_array, debug_info->line_numbers, debug_info->num_line_numbers);
1269 g_array_sort (ln_array, (GCompareFunc)compare_lne);
1270 native_to_il_offset = g_new0 (int, code_size + 1);
1272 for (i = 0; i < debug_info->num_line_numbers; ++i) {
1274 MonoDebugLineNumberEntry lne = g_array_index (ln_array, MonoDebugLineNumberEntry, i);
1277 for (j = 0; j < lne.native_offset; ++j)
1278 native_to_il_offset [j] = -1;
1281 if (i < debug_info->num_line_numbers - 1) {
1282 MonoDebugLineNumberEntry lne_next = g_array_index (ln_array, MonoDebugLineNumberEntry, i + 1);
1284 for (j = lne.native_offset; j < lne_next.native_offset; ++j)
1285 native_to_il_offset [j] = lne.il_offset;
1287 for (j = lne.native_offset; j < code_size; ++j)
1288 native_to_il_offset [j] = lne.il_offset;
1291 g_array_free (ln_array, TRUE);
1295 prev_il_offset = -1;
1297 for (i = 0; i < code_size; ++i) {
1301 if (!debug_info->line_numbers)
1304 if (native_to_il_offset)
1305 il_offset = native_to_il_offset [i];
1307 il_offset = il_offset_from_address (method, debug_info, i);
1309 il_offset = il_offset_from_address (method, debug_info, i);
1311 g_assert (il_offset == native_to_il_offset [i]);
1314 il_offset = native_to_il_offset [i];
1318 if (il_offset == prev_il_offset)
1321 prev_il_offset = il_offset;
1323 loc = mono_debug_symfile_lookup_location (minfo, il_offset);
1326 int line_diff = (gint32)loc->row - (gint32)prev_line;
1327 int addr_diff = i - prev_native_offset;
1330 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
1333 emit_byte (w, sizeof (gpointer) + 1);
1334 emit_byte (w, DW_LNE_set_address);
1335 emit_pointer_value (w, code);
1338 * The prolog+initlocals region does not have a line number, this
1339 * makes them belong to the first line of the method.
1341 emit_byte (w, DW_LNS_advance_line);
1342 emit_sleb128 (w, (gint32)loc->row - (gint32)prev_line);
1343 prev_line = loc->row;
1346 if (loc->row != prev_line) {
1347 if (!prev_file_name || strcmp (loc->source_file, prev_file_name) != 0) {
1348 /* Add an entry to the file table */
1349 /* FIXME: Avoid duplicates */
1350 file_index = emit_line_number_file_name (w, loc->source_file, 0, 0);
1351 g_free (prev_file_name);
1352 prev_file_name = g_strdup (loc->source_file);
1354 emit_byte (w, DW_LNS_set_file);
1355 emit_uleb128 (w, file_index);
1356 emit_byte (w, DW_LNS_copy);
1359 //printf ("X: %p(+0x%x) %d %s:%d(+%d)\n", code + i, addr_diff, loc->il_offset, loc->source_file, loc->row, line_diff);
1361 emit_advance_op (w, line_diff, addr_diff);
1363 prev_line = loc->row;
1364 prev_native_offset = i;
1372 g_free (prev_file_name);
1375 emit_byte (w, DW_LNS_advance_pc);
1376 emit_sleb128 (w, code_size - prev_native_offset);
1377 emit_byte (w, DW_LNS_copy);
1381 emit_byte (w, DW_LNE_end_sequence);
1383 /* No debug info, XDEBUG mode */
1385 const guint8 *ip = header->code;
1386 int prev_line, prev_native_offset;
1390 * Emit the IL code into a temporary file and emit line number info
1391 * referencing that file.
1394 name = mono_method_full_name (method, TRUE);
1395 fprintf (w->il_file, "// %s\n", name);
1396 w->il_file_line_index ++;
1399 il_to_line = g_new0 (int, header->code_size);
1401 emit_section_change (w, ".debug_line", LINE_SUBSECTION_DATA);
1403 emit_byte (w, sizeof (gpointer) + 1);
1404 emit_byte (w, DW_LNE_set_address);
1405 emit_pointer_value (w, code);
1407 // FIXME: Optimize this
1408 while (ip < header->code + header->code_size) {
1409 int il_offset = ip - header->code;
1412 w->il_file_line_index ++;
1414 dis = disasm_ins (method, ip, &ip);
1415 fprintf (w->il_file, "%s\n", dis);
1418 il_to_line [il_offset] = w->il_file_line_index;
1421 /* Emit line number info */
1423 prev_native_offset = 0;
1424 for (i = 0; i < debug_info->num_line_numbers; ++i) {
1425 MonoDebugLineNumberEntry *lne = &debug_info->line_numbers [i];
1428 if (lne->il_offset >= header->code_size)
1430 line = il_to_line [lne->il_offset];
1433 * This seems to happen randomly, it looks like il_offset points
1434 * into the middle of an instruction.
1438 printf ("%s\n", mono_method_full_name (method, TRUE));
1439 printf ("%d %d\n", lne->il_offset, header->code_size);
1444 if (line - prev_line != 0) {
1445 emit_advance_op (w, line - prev_line, (gint32)lne->native_offset - prev_native_offset);
1448 prev_native_offset = lne->native_offset;
1452 emit_byte (w, DW_LNS_advance_pc);
1453 emit_sleb128 (w, code_size - prev_native_offset);
1454 emit_byte (w, DW_LNS_copy);
1458 emit_byte (w, DW_LNE_end_sequence);
1460 fflush (w->il_file);
1461 g_free (il_to_line);
1465 static MonoMethodVar*
1466 find_vmv (MonoCompile *cfg, MonoInst *ins)
1471 for (j = 0; j < cfg->num_varinfo; ++j) {
1472 if (cfg->varinfo [j] == ins)
1476 if (j < cfg->num_varinfo) {
1477 return MONO_VARINFO (cfg, j);
1485 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)
1488 MonoMethodSignature *sig;
1489 MonoMethodHeader *header;
1490 char **names, **tdies, **local_tdies;
1497 emit_section_change (w, ".debug_info", 0);
1499 sig = mono_method_signature (method);
1500 header = mono_method_get_header (method);
1502 /* Parameter types */
1503 tdies = g_new0 (char *, sig->param_count + sig->hasthis);
1504 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
1507 if (i == 0 && sig->hasthis) {
1508 if (method->klass->valuetype)
1509 t = &method->klass->this_arg;
1511 t = &method->klass->byval_arg;
1513 t = sig->params [i - sig->hasthis];
1520 local_tdies = g_new0 (char *, header->num_locals);
1521 for (i = 0; i < header->num_locals; ++i) {
1522 emit_type (w, header->locals [i]);
1526 names = g_new0 (char *, sig->param_count);
1527 mono_method_get_param_names (method, (const char **) names);
1529 emit_uleb128 (w, ABBREV_SUBPROGRAM);
1530 name = mono_method_full_name (method, FALSE);
1531 emit_string (w, name);
1534 emit_pointer_unaligned (w, start_symbol);
1535 emit_pointer_unaligned (w, end_symbol);
1537 emit_pointer_value (w, code);
1538 emit_pointer_value (w, code + code_size);
1542 emit_byte (w, DW_OP_breg6);
1546 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
1547 MonoInst *arg = args ? args [i] : NULL;
1550 char pname_buf [128];
1551 MonoMethodVar *vmv = NULL;
1552 gboolean need_loclist = FALSE;
1554 vmv = find_vmv (cfg, arg);
1555 if (code && vmv && (vmv->live_range_start || vmv->live_range_end))
1556 need_loclist = TRUE;
1558 if (i == 0 && sig->hasthis) {
1559 if (method->klass->valuetype)
1560 t = &method->klass->this_arg;
1562 t = &method->klass->byval_arg;
1565 t = sig->params [i - sig->hasthis];
1566 pname = names [i - sig->hasthis];
1569 emit_uleb128 (w, need_loclist ? ABBREV_PARAM_LOCLIST : ABBREV_PARAM);
1571 if (pname[0] == '\0') {
1572 sprintf (pname_buf, "param%d", i - sig->hasthis);
1575 emit_string (w, pname);
1577 if (!arg || arg->flags & MONO_INST_IS_DEAD)
1578 emit_var_type (w, &mono_defaults.int32_class->byval_arg);
1580 emit_var_type (w, t);
1583 encode_var_location (w, arg, p, &p);
1585 vmv->live_range_start = 0;
1586 if (vmv->live_range_end == 0)
1587 /* FIXME: Uses made in calls are not recorded */
1588 vmv->live_range_end = code_size;
1589 emit_loclist (w, arg, code + vmv->live_range_start, code + vmv->live_range_end, buf, p - buf);
1591 emit_byte (w, p - buf);
1592 emit_bytes (w, buf, p - buf);
1598 num_locals = mono_debug_lookup_locals (method, &local_names, &local_indexes);
1600 for (i = 0; i < header->num_locals; ++i) {
1601 MonoInst *ins = locals [i];
1602 char name_buf [128];
1604 MonoMethodVar *vmv = NULL;
1605 gboolean need_loclist = FALSE;
1607 /* ins->dreg no longer contains the original vreg */
1608 vmv = find_vmv (cfg, ins);
1610 if (vmv->live_range_start) {
1611 /* This variable has a precise live range */
1612 need_loclist = TRUE;
1616 emit_uleb128 (w, need_loclist ? ABBREV_VARIABLE_LOCLIST : ABBREV_VARIABLE);
1618 for (j = 0; j < num_locals; ++j)
1619 if (local_indexes [j] == i)
1621 if (j < num_locals) {
1622 emit_string (w, local_names [j]);
1624 sprintf (name_buf, "V_%d", i);
1625 emit_string (w, name_buf);
1628 if (!ins || ins->flags & MONO_INST_IS_DEAD)
1629 emit_var_type (w, &mono_defaults.int32_class->byval_arg);
1631 emit_var_type (w, header->locals [i]);
1634 encode_var_location (w, ins, p, &p);
1637 if (vmv->live_range_end == 0)
1638 /* FIXME: Uses made in calls are not recorded */
1639 vmv->live_range_end = code_size;
1640 emit_loclist (w, ins, code + vmv->live_range_start, code + vmv->live_range_end, buf, p - buf);
1642 emit_byte (w, p - buf);
1643 emit_bytes (w, buf, p - buf);
1647 g_free (local_names);
1648 g_free (local_indexes);
1650 /* Subprogram end */
1651 emit_uleb128 (w, 0x0);
1655 /* Emit unwind info */
1657 emit_fde (w, w->fde_index, start_symbol, end_symbol, code, code_size, unwind_info, TRUE);
1661 /* Emit line number info */
1662 if (code && debug_info)
1663 /* != could happen when using --regression */
1664 if (debug_info->code_start == code)
1665 emit_line_number_info (w, method, code, code_size, debug_info);
1671 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)
1673 emit_section_change (w, ".debug_info", 0);
1676 emit_uleb128 (w, ABBREV_SUBPROGRAM);
1677 emit_string (w, tramp_name);
1678 emit_pointer_value (w, code);
1679 emit_pointer_value (w, code + code_size);
1682 emit_byte (w, DW_OP_breg6);
1685 /* Subprogram end */
1686 emit_uleb128 (w, 0x0);
1688 /* Emit unwind info */
1689 emit_fde (w, w->fde_index, start_symbol, end_symbol, code, code_size, unwind_info, FALSE);
1692 #endif /* End of: !defined(DISABLE_AOT) && !defined(DISABLE_JIT) */