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/* Copyright (C) 2002, 2004 Red Hat, Inc.
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This file is part of elfutils.
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Written by Ulrich Drepper <drepper@redhat.com>, 2002.
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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 <fcntl.h>
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#include <inttypes.h>
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#include <libelf.h>
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#include ELFUTILS_HEADER(dw)
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#include <stdio.h>
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#include <string.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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int result = 0;
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int cnt;
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for (cnt = 1; cnt < argc; ++cnt)
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{
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int fd = open (argv[cnt], 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[cnt], dwarf_errmsg (-1));
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close (fd);
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continue;
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}
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Dwarf_Off cuoff = 0;
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Dwarf_Off old_cuoff = 0;
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size_t hsize;
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Dwarf_Off ao;
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uint8_t asz;
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uint8_t osz;
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while (dwarf_nextcu (dbg, cuoff, &cuoff, &hsize, &ao, &asz, &osz) == 0)
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{
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printf ("cuhl = %zu, o = %llu, asz = %hhu, osz = %hhu, ncu = %llu\n",
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hsize, (unsigned long long int) ao,
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asz, osz, (unsigned long long int) cuoff);
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/* Get the DIE for the CU. */
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Dwarf_Die die;
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if (dwarf_offdie (dbg, old_cuoff + hsize, &die) == NULL)
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{
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/* Something went wrong. */
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printf ("%s: cannot get CU die\n", argv[cnt]);
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result = 1;
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break;
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}
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old_cuoff = cuoff;
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Dwarf_Lines *lb;
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size_t nlb;
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if (dwarf_getsrclines (&die, &lb, &nlb) != 0)
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{
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printf ("%s: cannot get lines\n", argv[cnt]);
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result = 1;
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break;
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}
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printf (" %zu lines\n", nlb);
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for (size_t i = 0; i < nlb; ++i)
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{
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Dwarf_Line *l = dwarf_onesrcline (lb, i);
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if (l == NULL)
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{
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printf ("%s: cannot get individual line\n", argv[cnt]);
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result = 1;
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break;
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}
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Dwarf_Addr addr;
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if (dwarf_lineaddr (l, &addr) != 0)
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addr = 0;
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const char *file = dwarf_linesrc (l, NULL, NULL);
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int line;
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if (dwarf_lineno (l, &line) != 0)
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line = 0;
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printf ("%" PRIx64 ": %s:%d:", (uint64_t) addr,
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file ?: "???", line);
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/* Getting the file path through the Dwarf_Files should
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result in the same path. */
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Dwarf_Files *files;
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size_t idx;
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if (dwarf_line_file (l, &files, &idx) != 0)
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{
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printf ("%s: cannot get file from line (%zd): %s\n",
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argv[cnt], i, dwarf_errmsg (-1));
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result = 1;
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break;
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}
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const char *path = dwarf_filesrc (files, idx, NULL, NULL);
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if ((path == NULL && file != NULL)
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|| (path != NULL && file == NULL)
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|| (strcmp (file, path) != 0))
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{
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printf ("%s: line %zd srcline (%s) != file srcline (%s)\n",
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argv[cnt], i, file ?: "???", path ?: "???");
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result = 1;
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break;
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}
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int column;
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if (dwarf_linecol (l, &column) != 0)
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column = 0;
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if (column >= 0)
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printf ("%d:", column);
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bool is_stmt;
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if (dwarf_linebeginstatement (l, &is_stmt) != 0)
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is_stmt = false;
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bool end_sequence;
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if (dwarf_lineendsequence (l, &end_sequence) != 0)
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end_sequence = false;
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bool basic_block;
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if (dwarf_lineblock (l, &basic_block) != 0)
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basic_block = false;
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bool prologue_end;
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if (dwarf_lineprologueend (l, &prologue_end) != 0)
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prologue_end = false;
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bool epilogue_begin;
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if (dwarf_lineepiloguebegin (l, &epilogue_begin) != 0)
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epilogue_begin = false;
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printf (" is_stmt:%s, end_seq:%s, bb:%s, prologue:%s, epilogue:%s\n",
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is_stmt ? "yes" : "no", end_sequence ? "yes" : "no",
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basic_block ? "yes" : "no", prologue_end ? "yes" : "no",
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epilogue_begin ? "yes" : "no");
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}
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}
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dwarf_end (dbg);
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close (fd);
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}
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return result;
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}
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