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/* Test program for libdwfl symbol resolving
Copyright (C) 2013 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 <elf.h>
#include <dwarf.h>
#include <argp.h>
#include <stdio.h>
#include <stdio_ext.h>
#include <stdlib.h>
#include <error.h>
#include <string.h>
static const char *
gelf_type (GElf_Sym *sym)
{
switch (GELF_ST_TYPE (sym->st_info))
{
case STT_NOTYPE:
return "NOTYPE";
case STT_OBJECT:
return "OBJECT";
case STT_FUNC:
return "FUNC";
case STT_SECTION:
return "SECTION";
case STT_FILE:
return "FILE";
case STT_COMMON:
return "COMMON";
case STT_TLS:
return "TLS";
default:
return "UNKNOWN";
}
}
static const char *
gelf_bind (GElf_Sym *sym)
{
switch (GELF_ST_BIND (sym->st_info))
{
case STB_LOCAL:
return "LOCAL";
case STB_GLOBAL:
return "GLOBAL";
case STB_WEAK:
return "WEAK";
default:
return "UNKNOWN";
}
}
static int
list_syms (struct Dwfl_Module *mod,
void **user __attribute__ ((unused)),
const char *mod_name __attribute__ ((unused)),
Dwarf_Addr low_addr __attribute__ ((unused)),
void *arg __attribute__ ((unused)))
{
int syms = dwfl_module_getsymtab (mod);
assert (syms >= 0);
for (int ndx = 0; ndx < syms; ndx++)
{
GElf_Sym sym;
GElf_Word shndxp;
const char *name = dwfl_module_getsym (mod, ndx, &sym, &shndxp);
printf("%4d: %s\t%s\t%s (%" PRIu64 ") %#" PRIx64 "\n",
ndx, gelf_type (&sym), gelf_bind (&sym), name,
sym.st_size, sym.st_value);
/* And the reverse, which works for function symbols at least.
Note this only works because the st.value is adjusted by
dwfl_module_getsym (). */
if (GELF_ST_TYPE (sym.st_info) == STT_FUNC && shndxp != SHN_UNDEF)
{
GElf_Addr addr = sym.st_value;
GElf_Sym asym;
GElf_Word ashndxp;
const char *aname = dwfl_module_addrsym (mod, addr, &asym, &ashndxp);
assert (strcmp (name, aname) == 0);
}
}
return DWARF_CB_OK;
}
int
main (int argc, char *argv[])
{
int remaining;
Dwfl *dwfl;
error_t res;
res = argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining, &dwfl);
assert (res == 0 && dwfl != NULL);
ptrdiff_t off = 0;
do
off = dwfl_getmodules (dwfl, list_syms, NULL, off);
while (off > 0);
dwfl_end (dwfl);
return off;
}
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