Mark Wielaard | 212b4e3 | 2018-01-25 01:13:10 +0100 | [diff] [blame] | 1 | /* Test program for dwarf_die_addr_die. |
| 2 | Copyright (C) 2018 Red Hat, Inc. |
| 3 | This file is part of elfutils. |
| 4 | |
| 5 | This file is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | elfutils is distributed in the hope that it will be useful, but |
| 11 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include <config.h> |
| 19 | #include ELFUTILS_HEADER(dw) |
| 20 | #include <dwarf.h> |
| 21 | #include <sys/types.h> |
| 22 | #include <sys/stat.h> |
| 23 | #include <fcntl.h> |
| 24 | #include <stdio.h> |
| 25 | #include <stdint.h> |
| 26 | #include <stdlib.h> |
| 27 | #include <assert.h> |
| 28 | #include <inttypes.h> |
| 29 | #include <string.h> |
| 30 | #include <errno.h> |
| 31 | #include <unistd.h> |
| 32 | |
| 33 | /* The main Dwarf file. */ |
| 34 | static Dwarf *dwarf; |
| 35 | |
| 36 | int |
| 37 | check_die (Dwarf_Die *die) |
| 38 | { |
| 39 | if (dwarf_tag (die) == DW_TAG_invalid) |
| 40 | { |
| 41 | printf ("Invalid die\n"); |
| 42 | return -1; |
| 43 | } |
| 44 | |
| 45 | int res = 0; |
| 46 | void *addr = die->addr; |
| 47 | Dwarf_Die die2; |
| 48 | if (dwarf_die_addr_die (dwarf, addr, &die2) == NULL) |
| 49 | { |
| 50 | printf ("Bad die addr die at offset %" PRIx64 "\n", |
| 51 | dwarf_dieoffset (die)); |
| 52 | res = -1; |
| 53 | } |
| 54 | |
| 55 | if (dwarf_tag (die) != dwarf_tag (&die2)) |
| 56 | { |
| 57 | printf ("Tags differ for die at offset %" PRIx64 "\n", |
| 58 | dwarf_dieoffset (die)); |
| 59 | res = -1; |
| 60 | } |
| 61 | |
| 62 | if (dwarf_cuoffset (die) != dwarf_cuoffset (&die2)) |
| 63 | { |
| 64 | printf ("CU offsets differ for die at offset %" PRIx64 "\n", |
| 65 | dwarf_dieoffset (die)); |
| 66 | res = -1; |
| 67 | } |
| 68 | |
| 69 | Dwarf_Die child; |
| 70 | if (dwarf_child (die, &child) == 0) |
| 71 | res |= check_die (&child); |
| 72 | |
| 73 | Dwarf_Die sibling; |
| 74 | if (dwarf_siblingof (die, &sibling) == 0) |
| 75 | res |= check_die (&sibling); |
| 76 | |
| 77 | return res; |
| 78 | } |
| 79 | |
| 80 | int |
| 81 | check_dbg (Dwarf *dbg) |
| 82 | { |
| 83 | int res = 0; |
| 84 | Dwarf_Off off = 0; |
| 85 | Dwarf_Off old_off = 0; |
| 86 | size_t hsize; |
| 87 | Dwarf_Off abbrev; |
| 88 | uint8_t addresssize; |
| 89 | uint8_t offsetsize; |
| 90 | while (dwarf_nextcu (dbg, off, &off, &hsize, &abbrev, &addresssize, |
| 91 | &offsetsize) == 0) |
| 92 | { |
| 93 | Dwarf_Die die; |
| 94 | if (dwarf_offdie (dbg, old_off + hsize, &die) != NULL) |
| 95 | { |
| 96 | printf ("checking CU at %" PRIx64 "\n", old_off); |
| 97 | res |= check_die (&die); |
| 98 | } |
| 99 | |
| 100 | old_off = off; |
| 101 | } |
| 102 | |
| 103 | // Same for type... |
| 104 | Dwarf_Half version; |
| 105 | uint64_t typesig; |
| 106 | Dwarf_Off typeoff; |
| 107 | off = 0; |
| 108 | old_off = 0; |
| 109 | while (dwarf_next_unit (dbg, off, &off, &hsize, &version, &abbrev, |
| 110 | &addresssize, &offsetsize, &typesig, &typeoff) == 0) |
| 111 | { |
| 112 | Dwarf_Die die; |
| 113 | if (dwarf_offdie_types (dbg, old_off + hsize, &die) != NULL) |
| 114 | { |
| 115 | printf ("checking TU at %" PRIx64 "\n", old_off); |
| 116 | res |= check_die (&die); |
| 117 | } |
| 118 | |
| 119 | // We should have seen this already, but double check... |
| 120 | if (dwarf_offdie_types (dbg, old_off + typeoff, &die) != NULL) |
| 121 | { |
| 122 | printf ("checking Type DIE at %" PRIx64 "\n", |
| 123 | old_off + hsize + typeoff); |
| 124 | res |= check_die (&die); |
| 125 | } |
| 126 | |
| 127 | old_off = off; |
| 128 | } |
| 129 | |
| 130 | Dwarf *alt = dwarf_getalt (dbg); |
| 131 | if (alt != NULL) |
| 132 | { |
| 133 | printf ("checking alt debug\n"); |
| 134 | res |= check_dbg (alt); |
| 135 | } |
| 136 | |
| 137 | return res; |
| 138 | } |
| 139 | |
| 140 | int |
| 141 | main (int argc, char *argv[]) |
| 142 | { |
| 143 | if (argc < 2) |
| 144 | { |
| 145 | printf ("No file given.\n"); |
| 146 | return -1; |
| 147 | } |
| 148 | |
| 149 | const char *name = argv[1]; |
| 150 | int fd = open (name, O_RDONLY); |
| 151 | if (fd < 0) |
| 152 | { |
| 153 | printf ("Cannnot open '%s': %s\n", name, strerror (errno)); |
| 154 | return -1; |
| 155 | } |
| 156 | |
| 157 | dwarf = dwarf_begin (fd, DWARF_C_READ); |
| 158 | if (dwarf == NULL) |
| 159 | { |
| 160 | printf ("Not a Dwarf file '%s': %s\n", name, dwarf_errmsg (-1)); |
| 161 | close (fd); |
| 162 | return -1; |
| 163 | } |
| 164 | |
| 165 | printf ("checking %s\n", name); |
| 166 | int res = check_dbg (dwarf); |
| 167 | |
| 168 | dwarf_end (dwarf); |
| 169 | close (fd); |
| 170 | |
| 171 | return res; |
| 172 | } |