| /* Test program for dwarf_peel_type. Peels type of top-level vars. |
| Copyright (C) 2017 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/>. */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif |
| |
| #include <assert.h> |
| #include <argp.h> |
| #include <inttypes.h> |
| #include <fcntl.h> |
| #include ELFUTILS_HEADER(dw) |
| #include ELFUTILS_HEADER(dwfl) |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <dwarf.h> |
| |
| #include "../libdw/known-dwarf.h" |
| |
| static const char * |
| dwarf_tag_string (unsigned int tag) |
| { |
| switch (tag) |
| { |
| #define DWARF_ONE_KNOWN_DW_TAG(NAME, CODE) case CODE: return #NAME; |
| DWARF_ALL_KNOWN_DW_TAG |
| #undef DWARF_ONE_KNOWN_DW_TAG |
| default: |
| return NULL; |
| } |
| } |
| |
| void |
| print_var_raw_type (Dwarf_Die *var) |
| { |
| Dwarf_Attribute attr_mem; |
| Dwarf_Die type_mem; |
| Dwarf_Die *type; |
| const char *name = dwarf_diename (var); |
| |
| type = dwarf_formref_die (dwarf_attr (var, DW_AT_type, &attr_mem), |
| &type_mem); |
| if (type != NULL) |
| { |
| /* Test twice, once with a separate result DIE. Then with the |
| DIE itself. The resulting tag should be the same. */ |
| Dwarf_Die result_mem; |
| Dwarf_Die *result = &result_mem; |
| int res = dwarf_peel_type (type, result); |
| if (res < 0) |
| printf ("%s error peeling type: %s\n", name, dwarf_errmsg (-1)); |
| else if (res > 0) |
| printf ("%s missing DW_TAG_TYPE, could peel further: %s\n", |
| name, dwarf_tag_string (dwarf_tag (result))); |
| else |
| { |
| int tag = dwarf_tag (result); |
| printf ("%s raw type %s\n", name, dwarf_tag_string (tag)); |
| res = dwarf_peel_type (type, type); |
| if (res < 0) |
| printf ("%s cannot peel type itself: %s\n", name, |
| dwarf_errmsg (-1)); |
| else if (res > 0) |
| printf ("%s missing DW_TAG_TYPE, could peel type further: %s\n", |
| name, dwarf_tag_string (dwarf_tag (type))); |
| else if (dwarf_tag (type) != tag) |
| printf ("%s doesn't resolve the same: %s != %s\n", name, |
| dwarf_tag_string (tag), |
| dwarf_tag_string (dwarf_tag (type))); |
| } |
| } |
| else |
| printf ("%s has no type.\n", name); |
| } |
| |
| int |
| main (int argc, char *argv[]) |
| { |
| |
| int remaining; |
| Dwfl *dwfl; |
| (void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining, |
| &dwfl); |
| assert (dwfl != NULL); |
| |
| Dwarf_Die *cu = NULL; |
| Dwarf_Addr dwbias; |
| while ((cu = dwfl_nextcu (dwfl, cu, &dwbias)) != NULL) |
| { |
| Dwarf_Die die_mem; |
| Dwarf_Die *die = &die_mem; |
| dwarf_child (cu, &die_mem); |
| |
| while (1) |
| { |
| if (dwarf_tag (die) == DW_TAG_variable) |
| print_var_raw_type (die); |
| |
| if (dwarf_siblingof (die, &die_mem) != 0) |
| break; |
| } |
| } |
| |
| dwfl_end (dwfl); |
| } |