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/* Test program for dwarf_lowpc and dwarf_highpc
Copyright (C) 2012, 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 <assert.h>
#include <inttypes.h>
#include ELFUTILS_HEADER(dwfl)
#include <dwarf.h>
#include <argp.h>
#include <stdio.h>
#include <stdio_ext.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include <fnmatch.h>
struct args
{
Dwfl *dwfl;
Dwarf_Die *cu;
Dwarf_Addr dwbias;
char **argv;
const char *file;
};
static struct args *args;
static void
fail(Dwarf_Off off, const char *name, const char *msg)
{
printf("%s: [%" PRIx64 "] '%s' %s\n", args->file, off, name, msg);
exit(-1);
}
static int
handle_die (Dwarf_Die *die, void *arg)
{
args = arg;
Dwarf_Off off = dwarf_dieoffset (die);
const char *name = dwarf_diename (die);
if (name == NULL)
name = "<no name>";
printf ("[%" PRIx64 "] %s\n", off, name);
Dwarf_Addr lowpc = 0;
Dwarf_Addr highpc = 0;
if (dwarf_lowpc (die, &lowpc) != 0 && dwarf_hasattr (die, DW_AT_low_pc))
fail (off, name, "has DW_AT_low_pc but dwarf_lowpc fails");
if (dwarf_highpc (die, &highpc) != 0 && dwarf_hasattr (die, DW_AT_high_pc))
fail (off, name, "has DW_AT_high_pc but dwarf_highpc fails");
/* GCC < 4.7 had a bug where no code CUs got a highpc == lowpc.
Allow that, because it is not the main purpose of this test. */
if (dwarf_hasattr (die, DW_AT_low_pc)
&& dwarf_hasattr (die, DW_AT_high_pc)
&& highpc <= lowpc
&& ! (dwarf_tag (die) == DW_TAG_compile_unit && highpc == lowpc))
{
printf("lowpc: %" PRIx64 ", highpc: %" PRIx64 "lx\n", lowpc, highpc);
fail (off, name, "highpc <= lowpc");
}
return 0;
}
int
main (int argc, char *argv[])
{
int remaining;
/* Set locale. */
(void) setlocale (LC_ALL, "");
struct args a = { .dwfl = NULL, .cu = NULL };
(void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining,
&a.dwfl);
assert (a.dwfl != NULL);
a.argv = &argv[remaining];
int result = 0;
while ((a.cu = dwfl_nextcu (a.dwfl, a.cu, &a.dwbias)) != NULL)
{
a.file = dwarf_diename (a.cu);
handle_die (a.cu, &a);
dwarf_getfuncs (a.cu, &handle_die, &a, 0);
uint8_t unit_type;
Dwarf_Die subdie;
if (dwarf_cu_info (a.cu->cu, NULL, &unit_type, NULL, &subdie,
NULL, NULL, NULL) != 0)
{
Dwarf_Off off = dwarf_dieoffset (a.cu);
fail (off, "dwarf_cu_info", dwarf_errmsg (-1));
}
if (unit_type == DW_UT_skeleton)
{
const char *name = dwarf_diename (&subdie) ?: "<unknown>";
printf ("Following split subdie: %s\n", name);
struct args b = a;
b.cu = &subdie;
handle_die (b.cu, &b);
dwarf_getfuncs (b.cu, &handle_die, &b, 0);
printf ("Done subdie: %s\n", name);
}
}
dwfl_end (a.dwfl);
printf ("\n");
return result;
}
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