1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/* DWARF DIEs
Copyright (C) 1994-2023 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "dwarf2/die.h"
#include "dwarf2/stringify.h"
/* See die.h. */
struct die_info *
die_info::allocate (struct obstack *obstack, int num_attrs)
{
size_t size = sizeof (struct die_info);
if (num_attrs > 1)
size += (num_attrs - 1) * sizeof (struct attribute);
struct die_info *die = (struct die_info *) obstack_alloc (obstack, size);
memset (die, 0, size);
return die;
}
/* See die.h. */
hashval_t
die_info::hash (const void *item)
{
const struct die_info *die = (const struct die_info *) item;
return to_underlying (die->sect_off);
}
/* See die.h. */
int
die_info::eq (const void *item_lhs, const void *item_rhs)
{
const struct die_info *die_lhs = (const struct die_info *) item_lhs;
const struct die_info *die_rhs = (const struct die_info *) item_rhs;
return die_lhs->sect_off == die_rhs->sect_off;
}
static void
dump_die_shallow (struct ui_file *f, int indent, struct die_info *die)
{
unsigned int i;
gdb_printf (f, "%*sDie: %s (abbrev %d, offset %s)\n",
indent, "",
dwarf_tag_name (die->tag), die->abbrev,
sect_offset_str (die->sect_off));
if (die->parent != NULL)
gdb_printf (f, "%*s parent at offset: %s\n",
indent, "",
sect_offset_str (die->parent->sect_off));
gdb_printf (f, "%*s has children: %s\n",
indent, "",
dwarf_bool_name (die->child != NULL));
gdb_printf (f, "%*s attributes:\n", indent, "");
for (i = 0; i < die->num_attrs; ++i)
{
gdb_printf (f, "%*s %s (%s) ",
indent, "",
dwarf_attr_name (die->attrs[i].name),
dwarf_form_name (die->attrs[i].form));
switch (die->attrs[i].form)
{
case DW_FORM_addr:
case DW_FORM_addrx:
case DW_FORM_GNU_addr_index:
gdb_printf (f, "address: ");
gdb_puts (hex_string (die->attrs[i].as_address ()), f);
break;
case DW_FORM_block2:
case DW_FORM_block4:
case DW_FORM_block:
case DW_FORM_block1:
gdb_printf (f, "block: size %s",
pulongest (die->attrs[i].as_block ()->size));
break;
case DW_FORM_exprloc:
gdb_printf (f, "expression: size %s",
pulongest (die->attrs[i].as_block ()->size));
break;
case DW_FORM_data16:
gdb_printf (f, "constant of 16 bytes");
break;
case DW_FORM_ref_addr:
gdb_printf (f, "ref address: ");
gdb_puts (hex_string (die->attrs[i].as_unsigned ()), f);
break;
case DW_FORM_GNU_ref_alt:
gdb_printf (f, "alt ref address: ");
gdb_puts (hex_string (die->attrs[i].as_unsigned ()), f);
break;
case DW_FORM_ref1:
case DW_FORM_ref2:
case DW_FORM_ref4:
case DW_FORM_ref8:
case DW_FORM_ref_udata:
gdb_printf (f, "constant ref: 0x%lx (adjusted)",
(long) (die->attrs[i].as_unsigned ()));
break;
case DW_FORM_data1:
case DW_FORM_data2:
case DW_FORM_data4:
case DW_FORM_data8:
case DW_FORM_udata:
gdb_printf (f, "constant: %s",
pulongest (die->attrs[i].as_unsigned ()));
break;
case DW_FORM_sec_offset:
gdb_printf (f, "section offset: %s",
pulongest (die->attrs[i].as_unsigned ()));
break;
case DW_FORM_ref_sig8:
gdb_printf (f, "signature: %s",
hex_string (die->attrs[i].as_signature ()));
break;
case DW_FORM_string:
case DW_FORM_strp:
case DW_FORM_line_strp:
case DW_FORM_strx:
case DW_FORM_GNU_str_index:
case DW_FORM_GNU_strp_alt:
gdb_printf (f, "string: \"%s\" (%s canonicalized)",
die->attrs[i].as_string ()
? die->attrs[i].as_string () : "",
die->attrs[i].canonical_string_p () ? "is" : "not");
break;
case DW_FORM_flag:
if (die->attrs[i].as_boolean ())
gdb_printf (f, "flag: TRUE");
else
gdb_printf (f, "flag: FALSE");
break;
case DW_FORM_flag_present:
gdb_printf (f, "flag: TRUE");
break;
case DW_FORM_indirect:
/* The reader will have reduced the indirect form to
the "base form" so this form should not occur. */
gdb_printf (f,
"unexpected attribute form: DW_FORM_indirect");
break;
case DW_FORM_sdata:
case DW_FORM_implicit_const:
gdb_printf (f, "constant: %s",
plongest (die->attrs[i].as_signed ()));
break;
default:
gdb_printf (f, "unsupported attribute form: %d.",
die->attrs[i].form);
break;
}
gdb_printf (f, "\n");
}
}
static void
dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die)
{
int indent = level * 4;
gdb_assert (die != NULL);
if (level >= max_level)
return;
dump_die_shallow (f, indent, die);
if (die->child != NULL)
{
gdb_printf (f, "%*s Children:", indent, "");
if (level + 1 < max_level)
{
gdb_printf (f, "\n");
dump_die_1 (f, level + 1, max_level, die->child);
}
else
{
gdb_printf (f,
" [not printed, max nesting level reached]\n");
}
}
if (die->sibling != NULL && level > 0)
{
dump_die_1 (f, level, max_level, die->sibling);
}
}
/* See die.h. */
void
die_info::dump (int max_level)
{
dump_die_1 (gdb_stdlog, 0, max_level, this);
}
/* See die.h. */
void
die_info::error_dump ()
{
dump_die_shallow (gdb_stderr, 0, this);
}
|
