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/* Test program for dwarf_die_addr_die.
Copyright (C) 2018 Red Hat, Inc.
This file is part of elfutils.
This file 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.
elfutils 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 <config.h>
#include ELFUTILS_HEADER(dw)
#include <dwarf.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <inttypes.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
/* The main Dwarf file. */
static Dwarf *dwarf;
int
check_die (Dwarf_Die *die)
{
if (dwarf_tag (die) == DW_TAG_invalid)
{
printf ("Invalid die\n");
return -1;
}
int res = 0;
void *addr = die->addr;
Dwarf_Die die2;
if (dwarf_die_addr_die (dwarf, addr, &die2) == NULL)
{
printf ("Bad die addr die at offset %" PRIx64 "\n",
dwarf_dieoffset (die));
res = -1;
}
if (dwarf_tag (die) != dwarf_tag (&die2))
{
printf ("Tags differ for die at offset %" PRIx64 "\n",
dwarf_dieoffset (die));
res = -1;
}
if (dwarf_cuoffset (die) != dwarf_cuoffset (&die2))
{
printf ("CU offsets differ for die at offset %" PRIx64 "\n",
dwarf_dieoffset (die));
res = -1;
}
Dwarf_Die child;
if (dwarf_child (die, &child) == 0)
res |= check_die (&child);
Dwarf_Die sibling;
if (dwarf_siblingof (die, &sibling) == 0)
res |= check_die (&sibling);
return res;
}
int
check_dbg (Dwarf *dbg)
{
int res = 0;
Dwarf_Off off = 0;
Dwarf_Off old_off = 0;
size_t hsize;
Dwarf_Off abbrev;
uint8_t addresssize;
uint8_t offsetsize;
while (dwarf_nextcu (dbg, off, &off, &hsize, &abbrev, &addresssize,
&offsetsize) == 0)
{
Dwarf_Die die;
if (dwarf_offdie (dbg, old_off + hsize, &die) != NULL)
{
printf ("checking CU at %" PRIx64 "\n", old_off);
res |= check_die (&die);
}
old_off = off;
}
// Same for type...
Dwarf_Half version;
uint64_t typesig;
Dwarf_Off typeoff;
off = 0;
old_off = 0;
while (dwarf_next_unit (dbg, off, &off, &hsize, &version, &abbrev,
&addresssize, &offsetsize, &typesig, &typeoff) == 0)
{
Dwarf_Die die;
if (dwarf_offdie_types (dbg, old_off + hsize, &die) != NULL)
{
printf ("checking TU at %" PRIx64 "\n", old_off);
res |= check_die (&die);
}
// We should have seen this already, but double check...
if (dwarf_offdie_types (dbg, old_off + typeoff, &die) != NULL)
{
printf ("checking Type DIE at %" PRIx64 "\n",
old_off + hsize + typeoff);
res |= check_die (&die);
}
old_off = off;
}
Dwarf *alt = dwarf_getalt (dbg);
if (alt != NULL)
{
printf ("checking alt debug\n");
res |= check_dbg (alt);
}
// Split or Type Dwarf_Dies gotten through dwarf_get_units.
Dwarf_CU *cu = NULL;
Dwarf_Die subdie;
uint8_t unit_type;
while (dwarf_get_units (dbg, cu, &cu, NULL,
&unit_type, NULL, &subdie) == 0)
{
if (dwarf_tag (&subdie) != DW_TAG_invalid)
{
printf ("checking %" PRIx8 " subdie\n", unit_type);
res |= check_die (&subdie);
}
}
return res;
}
int
main (int argc, char *argv[])
{
if (argc < 2)
{
printf ("No file given.\n");
return -1;
}
const char *name = argv[1];
int fd = open (name, O_RDONLY);
if (fd < 0)
{
printf ("Cannot open '%s': %s\n", name, strerror (errno));
return -1;
}
dwarf = dwarf_begin (fd, DWARF_C_READ);
if (dwarf == NULL)
{
printf ("Not a Dwarf file '%s': %s\n", name, dwarf_errmsg (-1));
close (fd);
return -1;
}
printf ("checking %s\n", name);
int res = check_dbg (dwarf);
dwarf_end (dwarf);
close (fd);
return res;
}
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