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/* Test program for dwarf_getscopes.
Copyright (C) 2005, 2014 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 <error.h>
#include <string.h>
static void
paddr (const char *prefix, Dwarf_Addr addr, Dwfl_Line *line)
{
const char *src;
int lineno, linecol;
if (line != NULL
&& (src = dwfl_lineinfo (line, &addr, &lineno, &linecol,
NULL, NULL)) != NULL)
{
if (linecol != 0)
printf ("%s%#" PRIx64 " (%s:%d:%d)",
prefix, addr, src, lineno, linecol);
else
printf ("%s%#" PRIx64 " (%s:%d)",
prefix, addr, src, lineno);
}
else
printf ("%s%#" PRIx64, prefix, addr);
}
static void
print_vars (unsigned int indent, Dwarf_Die *die)
{
Dwarf_Die child;
if (dwarf_child (die, &child) == 0)
do
switch (dwarf_tag (&child))
{
case DW_TAG_variable:
case DW_TAG_formal_parameter:
printf ("%*s%-30s[%6" PRIx64 "]\n", indent, "",
dwarf_diename (&child),
(uint64_t) dwarf_dieoffset (&child));
break;
default:
break;
}
while (dwarf_siblingof (&child, &child) == 0);
Dwarf_Attribute attr_mem;
Dwarf_Die origin;
if (dwarf_hasattr (die, DW_AT_abstract_origin)
&& dwarf_formref_die (dwarf_attr (die, DW_AT_abstract_origin, &attr_mem),
&origin) != NULL
&& dwarf_child (&origin, &child) == 0)
do
switch (dwarf_tag (&child))
{
case DW_TAG_variable:
case DW_TAG_formal_parameter:
printf ("%*s%s (abstract)\n", indent, "",
dwarf_diename (&child));
break;
default:
break;
}
while (dwarf_siblingof (&child, &child) == 0);
}
#define INDENT 4
static void
handle_address (GElf_Addr pc, Dwfl *dwfl)
{
Dwarf_Addr cubias;
Dwarf_Die *cudie = dwfl_addrdie (dwfl, pc, &cubias);
if (cudie == NULL)
error (EXIT_FAILURE, 0, "dwfl_addrdie: %s", dwfl_errmsg (-1));
Dwarf_Die *scopes;
int n = dwarf_getscopes (cudie, pc - cubias, &scopes);
if (n < 0)
error (EXIT_FAILURE, 0, "dwarf_getscopes: %s", dwarf_errmsg (-1));
else if (n == 0)
printf ("%#" PRIx64 ": not in any scope\n", pc);
else
{
printf ("%#" PRIx64 ":\n", pc);
unsigned int indent = 0;
while (n-- > 0)
{
Dwarf_Die *const die = &scopes[n];
indent += INDENT;
printf ("%*s%s (%#x)", indent, "",
dwarf_diename (die) ?: "<unnamed>",
dwarf_tag (die));
Dwarf_Addr lowpc, highpc;
if (dwarf_lowpc (die, &lowpc) == 0
&& dwarf_highpc (die, &highpc) == 0)
{
lowpc += cubias;
highpc += cubias;
Dwfl_Line *loline = dwfl_getsrc (dwfl, lowpc);
Dwfl_Line *hiline = dwfl_getsrc (dwfl, highpc - 1);
paddr (": ", lowpc, loline);
if (highpc != lowpc)
paddr (" .. ", highpc - 1, hiline == loline ? NULL : hiline);
}
puts ("");
print_vars (indent + INDENT, die);
}
free (scopes);
}
}
int
main (int argc, char *argv[])
{
int remaining;
/* Set locale. */
(void) setlocale (LC_ALL, "");
Dwfl *dwfl = NULL;
(void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining, &dwfl);
assert (dwfl != NULL);
int result = 0;
/* Now handle the addresses. In case none are given on the command
line, read from stdin. */
if (remaining == argc)
{
/* We use no threads here which can interfere with handling a stream. */
(void) __fsetlocking (stdin, FSETLOCKING_BYCALLER);
char *buf = NULL;
size_t len = 0;
while (!feof_unlocked (stdin))
{
if (getline (&buf, &len, stdin) < 0)
break;
char *endp;
uintmax_t addr = strtoumax (buf, &endp, 0);
if (endp != buf)
handle_address (addr, dwfl);
else
result = 1;
}
free (buf);
}
else
{
do
{
char *endp;
uintmax_t addr = strtoumax (argv[remaining], &endp, 0);
if (endp != argv[remaining])
handle_address (addr, dwfl);
else
result = 1;
}
while (++remaining < argc);
}
dwfl_end (dwfl);
return result;
}
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