mirror of
https://github.com/openharmony/third_party_elfutils.git
synced 2026-07-01 06:41:51 -04:00
Mark Wielaard
383eef45f6
For a skeleton DIE dwarf_get_units should provide the split DIE as subdie. This implements that by trying to find the (named) .dwo file and finding the matching CU in it. The .dwo file is search relative to the current DWARF or using the comp_dir of the skeleton DIE. Also fixes a small issue with str_offsets_base_off which is tested in the new testcase (by getting the name of the split CU DIE). Signed-off-by: Mark Wielaard <mark@klomp.org>
102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
/* Test dwarf_get_units finds split DWO CUs.
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Copyright (C) 2018 Red Hat, Inc.
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <dwarf.h>
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#include ELFUTILS_HEADER(dw)
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#include <stdio.h>
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#include <inttypes.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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int
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main (int argc, char *argv[])
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{
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for (int i = 1; i < argc; i++)
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{
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printf ("file: %s\n", argv[i]);
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int fd = open (argv[i], O_RDONLY);
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Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
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if (dbg == NULL)
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{
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printf ("%s not usable: %s\n", argv[i], dwarf_errmsg (-1));
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return -1;
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}
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Dwarf_CU *cu = NULL;
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Dwarf_Die cudie, subdie;
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uint8_t unit_type;
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int count = 0;
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while (dwarf_get_units (dbg, cu, &cu, NULL,
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&unit_type, &cudie, &subdie) == 0)
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{
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count++;
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printf ("Got cudie unit_type: %" PRIx8 "\n", unit_type);
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if (unit_type == DW_UT_skeleton)
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{
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Dwarf_CU *skel_cu = cudie.cu;
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Dwarf_CU *split_cu = subdie.cu;
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Dwarf_Die skel_die, split_die;
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uint64_t skel_id, split_id;
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printf ("Found a skeleton unit, with split die: %s\n",
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dwarf_diename (&subdie));
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if (dwarf_cu_die (skel_cu, &skel_die, NULL, NULL, NULL, NULL,
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&skel_id, NULL) == NULL)
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{
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printf ("bad skel_cu: %s\n", dwarf_errmsg (-1));
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return -1;
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}
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if (dwarf_cu_die (split_cu, &split_die, NULL, NULL, NULL, NULL,
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&split_id, NULL) == NULL)
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{
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printf ("bad skel_cu: %s\n", dwarf_errmsg (-1));
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return -1;
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}
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if (skel_id != split_id)
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{
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printf ("Skeleton id and Split id not equal!\n");
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return -1;
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}
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}
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}
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if (count == 0)
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{
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printf ("No units found\n");
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return -1;
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}
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dwarf_end (dbg);
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close (fd);
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printf ("\n");
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}
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return 0;
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}
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