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/* 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 ((CORE_ADDR) 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);
}
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