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/* Test program for dwarf_getmacros and related
Copyright (C) 2009, 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 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 <unistd.h>
static void include (Dwarf *dbg, Dwarf_Off macoff, ptrdiff_t token);
static int
mac (Dwarf_Macro *macro, void *dbg)
{
static int level = 0;
unsigned int opcode;
dwarf_macro_opcode (macro, &opcode);
switch (opcode)
{
case DW_MACRO_import:
{
Dwarf_Attribute at;
int r = dwarf_macro_param (macro, 0, &at);
assert (r == 0);
Dwarf_Word w;
r = dwarf_formudata (&at, &w);
assert (r == 0);
printf ("%*sinclude %#" PRIx64 "\n", level, "", w);
++level;
include (dbg, w, DWARF_GETMACROS_START);
--level;
printf ("%*s/include\n", level, "");
break;
}
case DW_MACRO_start_file:
{
Dwarf_Files *files;
size_t nfiles;
if (dwarf_macro_getsrcfiles (dbg, macro, &files, &nfiles) < 0)
printf ("dwarf_macro_getsrcfiles: %s\n",
dwarf_errmsg (dwarf_errno ()));
Dwarf_Word w = 0;
dwarf_macro_param2 (macro, &w, NULL);
const char *name = dwarf_filesrc (files, (size_t) w, NULL, NULL);
printf ("%*sfile %s\n", level, "", name);
++level;
break;
}
case DW_MACRO_end_file:
{
--level;
printf ("%*s/file\n", level, "");
break;
}
case DW_MACINFO_define:
case DW_MACRO_define_strp:
case DW_MACRO_define_sup:
case DW_MACRO_define_strx:
{
const char *value;
dwarf_macro_param2 (macro, NULL, &value);
printf ("%*s%s\n", level, "", value);
break;
}
case DW_MACINFO_undef:
case DW_MACRO_undef_strp:
case DW_MACRO_undef_sup:
case DW_MACRO_undef_strx:
break;
default:
{
size_t paramcnt;
dwarf_macro_getparamcnt (macro, ¶mcnt);
printf ("%*sopcode %u with %zd arguments\n",
level, "", opcode, paramcnt);
break;
}
}
return DWARF_CB_ABORT;
}
static void
include (Dwarf *dbg, Dwarf_Off macoff, ptrdiff_t token)
{
while ((token = dwarf_getmacros_off (dbg, macoff, mac, dbg, token)) != 0)
if (token == -1)
{
puts (dwarf_errmsg (dwarf_errno ()));
break;
}
}
static void
getmacros (Dwarf *dbg, Dwarf_Die *die, bool new_style)
{
for (ptrdiff_t off = new_style ? DWARF_GETMACROS_START : 0;
(off = dwarf_getmacros (die, mac, dbg, off)); )
if (off == -1)
{
puts (dwarf_errmsg (-1));
break;
}
}
int
main (int argc, char *argv[])
{
assert (argc >= 3);
const char *name = argv[1];
bool new_style = argc > 3;
int fd = open (name, O_RDONLY);
Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
if (argv[2][0] == '\0')
{
Dwarf_CU *cu = NULL;
Dwarf_Die cudie, subdie;
uint8_t unit_type;
while (dwarf_get_units (dbg, cu, &cu, NULL,
&unit_type, &cudie, &subdie) == 0)
{
Dwarf_Die *die = (unit_type == DW_UT_skeleton
? &subdie : &cudie);
if (! dwarf_hasattr (die, DW_AT_macro_info)
&& ! dwarf_hasattr (die, DW_AT_GNU_macros)
&& ! dwarf_hasattr (die, DW_AT_macros))
continue;
printf ("CU %s\n", dwarf_diename (die));
getmacros (dbg, die, new_style);
}
}
else
{
ptrdiff_t cuoff = strtol (argv[2], NULL, 0);
Dwarf_Die cudie_mem, *cudie = dwarf_offdie (dbg, cuoff, &cudie_mem);
if (cudie == NULL)
{
puts (dwarf_errmsg (-1));
return 1;
}
getmacros (dbg, cudie, new_style);
}
dwarf_end (dbg);
close (fd);
return 0;
}
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